CN109079438A - A kind of steel structure processing technology - Google Patents

Abstract

The invention discloses a kind of steel structure processing technologies, it is characterised in that including the 1) inspection of raw and process materials；2) setting-out, jacking；3) blanking, cutting；4) splicing；5) H profile steel group is vertical and welds；6) production of steel column；7) production of roof girder；8) production of crane girder；9) drilling；10) derusting, anticorrosion；11) it assembles.Obtained steel construction quality of the invention is high, and qualification rate reaches 99% or more, and processing process is reasonable, effectively reduces cost, while improving the Corrosion Protection of steel member, prolongs the service life, enhances product performance.

Description

A kind of steel structure processing technology

Technical field

The invention belongs to building element preparation technical fields, and in particular to a kind of steel structure processing technology.

Background technique

The structure that steel construction is made of steel material is one of main building construction types.Structure is mainly by fashioned iron With the components composition such as joist steel, steel column, steel truss made of steel plate etc., and derusting rust-proofing technique is used.Between each component or component Generally use weld seam, bolt or rivet interlacement.Because its self weight is lighter, and easy construction, it is widely used in the fields such as large-sized workshop. Steel structure system has from heavy and light, batch production manufacture, quick for installation, short construction period, anti-seismic performance is good, gain quick return, ring for investment The comprehensive advantages such as border pollution is few, compared with reinforced concrete structure, with more the uniqueness developed at " high, big, light " three aspects Advantage, in the world, particularly developed countries and area, it is reasonable, extensive that steel construction obtains in building engineering field Using.

But the processing of existing steel construction leads to steel structure there is also problems, such as existing processing technology are unreasonable Part reprocessing or excess processes, seriously affect product quality, and high production cost.In addition to this existing steel construction is most Using spray painting anticorrosion, need to spray mostly 3 ~ 4 times, and be easy to fall off, unsightly, therefore, it is necessary to invent a kind of steel construction Processing technology is to solve the above problems.

Summary of the invention

The purpose of the present invention is to provide a kind of steel structure processing technologies.

The object of the present invention is achieved like this, comprising the following steps:

1) inspection of raw and process materials:

The inspection of raw and process materials guarantees that all raw material meets existing country and industry standard；

2) setting-out, jacking:

Setting-out is first carried out before processing, and whether check drawing wrong, carry out jacking using drawing after confirmation, before jacking, First it is familiar with drawing and technique requirement, then carries out a number material；After steel plate scribing line, indicates reference line, center line and examine control point；Structure The material-saving seam of part needs to have in jacking figure or component diagram clearly to identify, and notifies to issue the vertical section of blanking section, H group, secondary operation Section and erection welding section；Groove type or groove length are indicated when all connecting plates or H profile steel discharge, indicate the splice bits of splicing weld seam It sets；

3) blanking, cutting:

Steel are cut, first guarantee that greasy dirt, iron rust, the oxide on steel surface are removed completely, after cutting before cutting It is polished using grinding wheel on non-assembly side；

4) splicing:

Splicing must be carried out by surveying on flat platform, level error≤3mm of platform, and wing plate, web need to be staggered at splicing 200mm or more；The splicing of wing plate is long wide not less than 2 times of wing plate, and the splicing of web is long to be not less than not less than 600mm, width 300mm；Bracket or even section plate 200mm or more need to be avoided at splicing；Avoid Kong Qun at splicing seam, away from most lateral opening position 120mm with On；Component length L≤6m allows to have a splicing welding joint, 10m >=L > 6m, allows to have two splicing welding joints, and L > 10m allows There are three splicing welding joints；Center will be aligned when splicing, and groove and two sides 50mm are polished to exposing metallic luster before splicing；Steel When plate thickness is greater than 30mm, need to be heat-treated before welding, 100 DEG C of minimum preheating temperature, 100~350 DEG C of interlayer temperature, for Position of joints will preheat before weldering；Full penetration construction joint should carry out 100%UT flaw detection and 100%WT flaw detection, important non-full penetration Weld seam should carry out MT flaw detection；All splicing welding joints should all add run-on tab, arc-extinguishing plate, need to use flame or machine cuts, must not hammer, It polishes cut place or planes；

5) H profile steel group is vertical and welds:

T-steel group is vertical before this headed by BH fashioned iron group is vertical, then is that H profile steel group is vertical；Then positioning welding is carried out；BH fashioned iron is welded with The splicing of the length of the edge of a wing and web and longitudinal seam welding；Web and the longitudinal seam on the edge of a wing require to weld according to technical conditions It is fillet weld that H profile steel web thickness, which is less than 20mm, and web thickness is greater than 20mm for the weldering of groove partial penetrated；Postwelding thoroughly removes molten Slag, positioning welding line is cracked should remove after reweld；Tack welding avoids state pause judgments and corner's welding in weld seam, T shape Connector is symmetrically carried out in two sides；Forbid the striking blow-out on the base material other than welding region；Tack welding size is no more than design ruler Very little 2/3, having a size of between 4 ~ 8mm；Package size places 2~3mm shrinkage in width direction before BH steel welding；Welding is visited After wound is qualified, it is necessary to be corrected, the angular deformation of control bending and torsional deformation and section；

6) production of steel column:

For the straight bracket of steel column, a root long I-steel, re-segmenting cutting are first formed；To Irregular parts using under automatic cutting Material；When to wing plate, the web blanking of steel column, length direction lengthens 30mm surplus, and wing plate width does not put surplus, and web width permits Perhaps 0 ~+2mm；Per pass strength plate shrinkage is 0.4mm ~ 0.5mm；Column and bottom plate milling flat-top are tight；When secondary stuff-assignment, it is desirable that steel column first mills It is flat, it then crossed, drilled on the basis of one end, then carry out bracket assembling, stiffener assembling, it is yet another after welding is qualified End takes long welding equipment column base plate to turn next process after the assay was approved；

7) production of roof girder:

For welded H section steel, the splicing seams of flange plate and web should be staggered 200 or more, and weld seam grade is second level, for hot rolling H The splicing welding joint of fashioned iron, flange plate and web need not be staggered, and weld seam grade is second level；Roof girder presses 1/500 arch camber, and production will be put It is welded using automatic welding in the section of ground sample, welded H section steel；Before roof girder assembling, plus tolerance assembly need to be carried out, after welding, if structure When part overall length plus tolerance is overproof, it can be allowed to shrink 1~2mm with thermal recalibration, reached within the margin of tolerance, be unable to negative common difference dress Match；

8) production of crane girder:

The upper and lower wing plate and web attachment weld fillet weld of crane girder, face of weld are made into form of straight lines or spill；On crane girder Weld seam both ends add run-on tab and arc-extinguishing plate；To be welded finish removes run-on tab and when arc-extinguishing plate, uses sand after need to being sliced off with gas cutting Wheel polishing, is allowed to smooth with base metal；When the wing web of crane girder needs splicing, splice point should in away from 1/3 range of beam-ends, on The splice point of lower wing plate and web should mutually stagger 200mm or more, and avoid hole, weld seam, gusset 200mm or more；On upper flange It is polished after the splicing welding joint flaw detection on surface is qualified；It is welded after should being held out against with upper flange planing the upper end of the ribbed stiffener of crane girder；

9) drilling:

High-strength bolt connecting hole, using drilling via formations；Need to cross the workpiece of drilling, first draw the center line in reference line and hole, hole The heart stamps foreign punching；In the case of more than regular for hole group's size or identical size hole group distribution, drilled on first drilling machine using overlay film, And drilling template is processed in advance；For using high-strength bolt and the bolted part of installation, using machine drilling；The height The hole of strength bolt is I pores, and installation bolt is II pores；Polishing removal burr is needed after all drilling processings；

10) derusting, anticorrosion:

A, the workpiece that need to carry out galvanizing by dipping black part inspection: is subjected to black part inspection；

B, pendant: first checking suspender, and plating piece is then carried out classification hanging according to material, material shape, material specification；

C, pickling and rinsing: plating piece is placed in pickling solution, in acid cleaning process, by vibration 2 ~ 3 times above and below workpiece, and is proposed Liquid level checks pickling quality, pickling is carried out again after being brushed with tool to the surface of the deficient pickling in part, to reach plating piece surface No residual oxide layer and the attachment of other pollutants, surface are in greyish white gloss；The pickling solution is dilute hydrochloric acid, and working concentration is 40 ~ 200 grams per liter solution, pickling temperature are room temperature, pickling time 30-40min；The plating piece of pickling qualification is entered into potcher It is rinsed through flowing water, removes pickling solution remained on surface, after plating piece is hung out from potcher, stopped on slot no less than 15 seconds, wait drip After removing surface area water, fluxing agent processing is carried out immediately；The rinse water keeps flowing cleaning, and pH value is greater than 6；

D, fluxing agent is handled: the plating piece after sufficiently rinsing is completely into progress solvent processing, soaking time in fluxing agent solution For 1 ~ 2min；

E, it being dried: hot-air drying being carried out to plating piece using 100 ~ 150 DEG C of hot-airs, baking time is 2 ~ 5min, until Plating piece is sufficiently dry；

F, galvanizing by dipping:

Plating piece after being dried is subjected to galvanizing by dipping immediately, it is first that the oxide layer of liquid level is clear before plating piece enters zinc liquid Remove, it is then steady that slowly plating piece is tilted or is placed vertically in zinc liquid, plating piece upper surface immerse zinc liquid depth be 100 ~ 400mm, and suitably carry out vibration up and down；It when plating piece proposes, keeps liquid level without zinc gray and foreign matter, while plating piece being kept to tilt or hang down Directly, and in time it vibrates, removes extra zinc；Plating piece immerses cooling bath immediately after proposing, air cooling time controlled in 80 seconds；

G, cooling: coolant water temperature submerges plating piece when hereinafter, cooling at 60 DEG C, and cooling water quality is limpid, keeps stream It is dynamic, PH 6 ~ 8；

H, Passivation Treatment and rinsing: being passivated processing for plating piece after cooling in passivating solution, when passivation extremely by plating piece vibration Few 1 time, obtained passivating film with glassy yellow be it is normal, wipe not falling for test stone with finger；The workpiece that passivation comes out carries out Rinsing, rinsing temperature is less than 50 DEG C, the limpid free from extraneous odour of rinse water, and rinsing time is 10 ~ 30s；

I, discharging, inspection, finishing: carrying out discharging after hanger supports, removes plating piece surface residual debris and drop tumor；It goes sightseeing outside plating piece It is sliding, impulse- free robustness, drop tumor, peeling, pitted skin, extra agglomeration and zinc gray, zero defect；

11) it assembles: workpiece is obtained according to drawing or actual conditions by above-mentioned steps, being assembled.

Compared with prior art, the present invention has following technical effect that

1, obtained steel construction quality of the invention is high, and qualification rate reaches 99% or more, and processing process is rationally, effectively Cost is reduced, while improving the Corrosion Protection of steel member, prolongs the service life, enhances product performance.

2, the smooth color of steel structure surface of the invention, non-aging, antiseptic property is good；And pass through the acid in hot galvanizing Fog inhibitor is added in washing lotion, one side reduces the corrosion that may cause when plating piece pickling, on the other hand acid mist when inhibition pickling Occur, avoids the corrosion to zinc-plated workshop, while improving zinc-plated person works' environment.

Specific embodiment

Below with reference to embodiment, the present invention is further illustrated, but the present invention is limited in any way, Based on present invention teach that it is made it is any transform or replace, all belong to the scope of protection of the present invention.

Steel structure processing technology of the present invention, comprising the following steps:

1) inspection of raw and process materials:

The inspection of raw and process materials guarantees that all raw material meets existing country and industry standard；

2) setting-out, jacking:

Setting-out is first carried out before processing, and whether check drawing wrong, carry out jacking using drawing after confirmation, before jacking, First it is familiar with drawing and technique requirement, then carries out a number material；After steel plate scribing line, indicates reference line, center line and examine control point；Structure The material-saving seam of part needs to have in jacking figure or component diagram clearly to identify, and notifies to issue the vertical section of blanking section, H group, secondary operation Section and erection welding section；Groove type or groove length are indicated when all connecting plates or H profile steel discharge, indicate the splice bits of splicing weld seam It sets；

3) blanking, cutting:

Steel are cut, first guarantee that greasy dirt, iron rust, the oxide on steel surface are removed completely, after cutting before cutting It is polished using grinding wheel on non-assembly side；

4) splicing:

Splicing must be carried out by surveying on flat platform, level error≤3mm of platform, and wing plate, web need to be staggered at splicing 200mm or more；The splicing of wing plate is long wide not less than 2 times of wing plate, and the splicing of web is long to be not less than not less than 600mm, width 300mm；Bracket or even section plate 200mm or more need to be avoided at splicing；Avoid Kong Qun at splicing seam, away from most lateral opening position 120mm with On；Component length L≤6m allows to have a splicing welding joint, 10m >=L > 6m, allows to have two splicing welding joints, and L > 10m allows There are three splicing welding joints；Center will be aligned when splicing, and groove and two sides 50mm are polished to exposing metallic luster before splicing；Steel When plate thickness is greater than 30mm, need to be heat-treated before welding, 100 DEG C of minimum preheating temperature, 100~350 DEG C of interlayer temperature, for Position of joints will preheat before weldering；Full penetration construction joint should carry out 100%UT flaw detection and 100%WT flaw detection, important non-full penetration Weld seam should carry out MT flaw detection；All splicing welding joints should all add run-on tab, arc-extinguishing plate, need to use flame or machine cuts, must not hammer, It polishes cut place or planes；

5) H profile steel group is vertical and welds:

T-steel group is vertical before this headed by BH fashioned iron group is vertical, then is that H profile steel group is vertical；Then positioning welding is carried out；BH fashioned iron is welded with The splicing of the length of the edge of a wing and web and longitudinal seam welding；Web and the longitudinal seam on the edge of a wing require to weld according to technical conditions It is fillet weld that H profile steel web thickness, which is less than 20mm, and web thickness is greater than 20mm for the weldering of groove partial penetrated；Postwelding thoroughly removes molten Slag, positioning welding line is cracked should remove after reweld；Tack welding avoids state pause judgments and corner's welding in weld seam, T shape Connector is symmetrically carried out in two sides；Forbid the striking blow-out on the base material other than welding region；Tack welding size is no more than design ruler Very little 2/3, having a size of between 4 ~ 8mm；Package size places 2~3mm shrinkage in width direction before BH steel welding；Welding is visited After wound is qualified, it is necessary to be corrected, the angular deformation of control bending and torsional deformation and section；

6) production of steel column:

For the straight bracket of steel column, a root long I-steel, re-segmenting cutting are first formed；To Irregular parts using under automatic cutting Material；When to wing plate, the web blanking of steel column, length direction lengthens 30mm surplus, and wing plate width does not put surplus, and web width permits Perhaps 0 ~+2mm；Per pass strength plate shrinkage is 0.4mm ~ 0.5mm；Column and bottom plate milling flat-top are tight；When secondary stuff-assignment, it is desirable that steel column first mills It is flat, it then crossed, drilled on the basis of one end, then carry out bracket assembling, stiffener assembling, it is yet another after welding is qualified End takes long welding equipment column base plate to turn next process after the assay was approved；

7) production of roof girder:

For welded H section steel, the splicing seams of flange plate and web should be staggered 200 or more, and weld seam grade is second level, for hot rolling H The splicing welding joint of fashioned iron, flange plate and web need not be staggered, and weld seam grade is second level；Roof girder presses 1/500 arch camber, and production will be put It is welded using automatic welding in the section of ground sample, welded H section steel；Before roof girder assembling, plus tolerance assembly need to be carried out, after welding, if structure When part overall length plus tolerance is overproof, it can be allowed to shrink 1~2mm with thermal recalibration, reached within the margin of tolerance, be unable to negative common difference dress Match；

8) production of crane girder:

The upper and lower wing plate and web attachment weld fillet weld of crane girder, face of weld are made into form of straight lines or spill；On crane girder Weld seam both ends add run-on tab and arc-extinguishing plate；To be welded finish removes run-on tab and when arc-extinguishing plate, uses sand after need to being sliced off with gas cutting Wheel polishing, is allowed to smooth with base metal；When the wing web of crane girder needs splicing, splice point should in away from 1/3 range of beam-ends, on The splice point of lower wing plate and web should mutually stagger 200mm or more, and avoid hole, weld seam, gusset 200mm or more；On upper flange It is polished after the splicing welding joint flaw detection on surface is qualified；It is welded after should being held out against with upper flange planing the upper end of the ribbed stiffener of crane girder；

9) drilling:

High-strength bolt connecting hole, using drilling via formations；Need to cross the workpiece of drilling, first draw the center line in reference line and hole, hole The heart stamps foreign punching；In the case of more than regular for hole group's size or identical size hole group distribution, drilled on first drilling machine using overlay film, And drilling template is processed in advance；For using high-strength bolt and the bolted part of installation, using machine drilling；The height The hole of strength bolt is I pores, and installation bolt is II pores；Polishing removal burr is needed after all drilling processings；

10) derusting, anticorrosion:

A, the workpiece that need to carry out galvanizing by dipping black part inspection: is subjected to black part inspection；

B, pendant: first checking suspender, and plating piece is then carried out classification hanging according to material, material shape, material specification；

C, pickling and rinsing: plating piece is placed in pickling solution, in acid cleaning process, by vibration 2 ~ 3 times above and below workpiece, and is proposed Liquid level checks pickling quality, pickling is carried out again after being brushed with tool to the surface of the deficient pickling in part, to reach plating piece surface No residual oxide layer and the attachment of other pollutants, surface are in greyish white gloss；The pickling solution is dilute hydrochloric acid, and working concentration is 40 ~ 200 grams per liter solution, pickling temperature are room temperature, pickling time 30-40min；The plating piece of pickling qualification is entered into potcher It is rinsed through flowing water, removes pickling solution remained on surface, after plating piece is hung out from potcher, stopped on slot no less than 15 seconds, wait drip After removing surface area water, fluxing agent processing is carried out immediately；The rinse water keeps flowing cleaning, and pH value is greater than 6；

D, fluxing agent is handled: the plating piece after sufficiently rinsing is completely into progress solvent processing, soaking time in fluxing agent solution For 1 ~ 2min；

E, it being dried: hot-air drying being carried out to plating piece using 100 ~ 150 DEG C of hot-airs, baking time is 2 ~ 5min, until Plating piece is sufficiently dry；

F, galvanizing by dipping:

Plating piece after being dried is subjected to galvanizing by dipping immediately, it is first that the oxide layer of liquid level is clear before plating piece enters zinc liquid Remove, it is then steady that slowly plating piece is tilted or is placed vertically in zinc liquid, plating piece upper surface immerse zinc liquid depth be 100 ~ 400mm, and suitably carry out vibration up and down；It when plating piece proposes, keeps liquid level without zinc gray and foreign matter, while plating piece being kept to tilt or hang down Directly, and in time it vibrates, removes extra zinc；Plating piece immerses cooling bath immediately after proposing, air cooling time controlled in 80 seconds；

G, cooling: coolant water temperature submerges plating piece when hereinafter, cooling at 60 DEG C, and cooling water quality is limpid, keeps stream It is dynamic, PH 6 ~ 8；

H, Passivation Treatment and rinsing: being passivated processing for plating piece after cooling in passivating solution, when passivation extremely by plating piece vibration Few 1 time, obtained passivating film with glassy yellow be it is normal, wipe not falling for test stone with finger；The workpiece that passivation comes out carries out Rinsing, rinsing temperature is less than 50 DEG C, the limpid free from extraneous odour of rinse water, and rinsing time is 10 ~ 30s；

I, discharging, inspection, finishing: carrying out discharging after hanger supports, removes plating piece surface residual debris and drop tumor；It goes sightseeing outside plating piece It is sliding, impulse- free robustness, drop tumor, peeling, pitted skin, extra agglomeration and zinc gray, zero defect；

11) it assembles: workpiece is obtained according to drawing or actual conditions by above-mentioned steps, being assembled.

Further, steel are Q345B steel, Q235B steel in raw material described in step (1)；Bolt is 10.9 grades Torque-shear type high-strength bolt；The Q345B steel surface coefficient of sliding resistance cannot be less than the steel of 0.45, Q235B and same material Coefficient of sliding resistance cannot be less than 0.4；

Further, the tolerance of setting-out described in step (2) be respectively as follows: ± 0.5 mm of parallel lines distance and fragment size, ± 1 mm of diagonal line, 0~+0.5 mm of length, 0~-0.5 mm of width, ± 0.5 mm of pitch-row, the angle ± 20 ' for processing template.

Further, one of automatic cutting, semi-automatic cutting, hand cut or more are cut into described in step (3) Kind；The automatic gas cutting slot width is 3mm；The cut surface requirement is that the allowable error of the roughness of cutting section is Groove face≤0.2mm, free margins≤0.1mm；The allowable error of the local score of cutting section is groove face d≤1.0mm, freedom Side d≤0.5mm；The allowable error of the verticality e of cutting section is t≤20mm, e≤1mm, t > 20mm, e < t/20.

Further, it is specially that bottom wing listrium is placed in the vertical machine horizontal rail of group that T-steel group described in step (5) is vertical, Adjustment positioning device is located at the vertical horizontal rail center of group, then assembles web, carries out end dislocation adjustment, fixed using web Position institutional adjustment web, is allowed to be aligned and hold out against with bottom wing listrium center, checks web off-centring and bottom wing listrium and abdomen The verticality of plate carries out positioning welding after qualified；The vertical H profile steel group is specially that top flange plate is placed in the vertical horizontal rail of machine of group On road, adjustment positioning device is located at the vertical horizontal rail center of group, and then T-steel is assembled on top flange plate, is held Portion's dislocation adjustment, adjusts T-steel web using web positioning mechanism, is allowed to be aligned and hold out against with top flange plate center, check abdomen The verticality and sectional dimension of plate center offset, top flange plate and web carry out positioning welding after qualified.

It further, further include that web and the steel column of the bracket are flat to mill in the production of steel column described in step (6) Fillet weld is held out against, bracket wing plate and steel column are groove penetration weld；Reinforcing rib of the steel column at bracket is groove penetration with column wing plate Weldering is fillet weld with column web；When assembling bracket, the fitted position of bracket to steel column allows plus tolerance 2mm；Bracket on steel column When for crane beam support, the lower end planing of support stiffener is held out against, and guarantees the levelness and verticality of surface planing；Bracket and connection Length is using disconnected milling end as positioning datum when plate assembles, and level is using column center as positioning datum；All steel columns and steel column, steel column and steel End plate, the double shear plate of beam docking need first ball blast, it is ensured that welding, end plate and column, beam connection are reassembled after coefficient of friction is qualified It is welded using groove.

Further, plus tolerance described in step (7) assembly requirement are as follows: when L≤10 meter, build-up tolerance be+1.5~+ 2, when L >=10 meter, build-up tolerance is+3~+4.

Further, the hole wall surface of I pores described in step (9) it is coarse≤12.5 μm；The hole wall surface in the hole II is coarse ≤ 25 μm of degree；The aperture tolerance in the hole II are as follows: diameter+1.0~2.0mm, circularity 2.0mm, verticality 0.03t, and should be not big In 2.0mm.

Further, pickling solution described in step (10) is also added with fog inhibitor, and the additive amount of the fog inhibitor is 0.1% ~ 1.5%, the fog inhibitor includes the raw material of following parts by weight: nonionic surfactant 4 ~ 10%, amine organic matter 8 ~ 15%, remaining is water.

Further, the nonionic surfactant is octyl phenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, height Carbon fatty alcohol polyoxyethylene ether, polyoxyethylene carboxylate, fatty acid methyl ester ethoxylate, polyether-type nonionic surface-active One of agent, fatty acid loss water sorbit ester, sucrose fatty ester are a variety of；The amine organic matter be aniline, ethylenediamine, One of triethanolamine, acetamide, cyclohexylamine are a variety of.

Embodiment 1

A kind of steel structure processing technology, comprising the following steps:

1) inspection of raw and process materials:

The inspection of raw and process materials guarantees that all raw material meets existing country and industry standard；Wherein, steel are in the raw material Q345B steel, Q235B steel；Bolt is 10.9 grades of torque-shear type high-strength bolts；The Q345B steel surface coefficient of sliding resistance is not The steel coefficient of sliding resistance obtained less than 0.45, Q235B and same material cannot be less than 0.4；

2) setting-out, jacking:

Setting-out is first carried out before processing, and whether check drawing wrong, carry out jacking using drawing after confirmation, before jacking, First it is familiar with drawing and technique requirement, then carries out a number material；After steel plate scribing line, indicates reference line, center line and examine control point；Structure The material-saving seam of part needs to have in jacking figure or component diagram clearly to identify, and notifies to issue the vertical section of blanking section, H group, secondary operation Section and erection welding section；Groove type or groove length are indicated when all connecting plates or H profile steel discharge, indicate the splice bits of splicing weld seam It sets；

The tolerance of the setting-out is respectively as follows: ± 0.5 mm of parallel lines distance and fragment size, ± 1 mm of diagonal line, length 0~+0.5 mm, 0~-0.5 mm of width, ± 0.5 mm of pitch-row, the angle ± 20 ' for processing template.

3) blanking, cutting:

Steel are cut, first guarantee that greasy dirt, iron rust, the oxide on steel surface are removed completely, after cutting before cutting It is polished using grinding wheel on non-assembly side；

Described is cut into automatic cutting；The automatic gas cutting slot width is 3mm；The cut surface requires to cut off The allowable error of the roughness in face is groove face≤0.2mm, free margins≤0.1mm；The local score of cutting section allows to miss Difference is groove face d≤1.0mm, free margins d≤0.5mm；The allowable error of the verticality e of cutting section be t≤20mm, e≤ 1mm, t > 20mm, e < t/20.

4) splicing:

Splicing must be carried out by surveying on flat platform, level error≤3mm of platform, and wing plate, web need to be staggered at splicing 200mm or more；The splicing of wing plate is long wide not less than 2 times of wing plate, and the splicing of web is long to be not less than not less than 600mm, width 300mm；Bracket or even section plate 200mm or more need to be avoided at splicing；Avoid Kong Qun at splicing seam, away from most lateral opening position 120mm with On；Component length L≤6m allows to have a splicing welding joint, 10m >=L > 6m, allows to have two splicing welding joints, and L > 10m allows There are three splicing welding joints；Center will be aligned when splicing, and groove and two sides 50mm are polished to exposing metallic luster before splicing；Steel When plate thickness is greater than 30mm, need to be heat-treated before welding, 100 DEG C of minimum preheating temperature, 100 DEG C of interlayer temperature, for node Position will preheat before weldering；Full penetration construction joint should carry out 100%UT flaw detection and 100%WT flaw detection, important partial penetration weld It should carry out MT flaw detection；All splicing welding joints should all add run-on tab, arc-extinguishing plate, need to use flame or machine cuts, must not hammer, to cutting Cut place's polishing or planing；

5) H profile steel group is vertical and welds:

T-steel group is vertical before this headed by BH fashioned iron group is vertical, then is that H profile steel group is vertical；Then positioning welding is carried out；BH fashioned iron is welded with The splicing of the length of the edge of a wing and web and longitudinal seam welding；Web and the longitudinal seam on the edge of a wing require to weld according to technical conditions It is fillet weld that H profile steel web thickness, which is less than 20mm, and web thickness is greater than 20mm for the weldering of groove partial penetrated；Postwelding thoroughly removes molten Slag, positioning welding line is cracked should remove after reweld；Tack welding avoids state pause judgments and corner's welding in weld seam, T shape Connector is symmetrically carried out in two sides；Forbid the striking blow-out on the base material other than welding region；Tack welding size is no more than design ruler Very little 2/3, having a size of between 4mm；Package size places 2mm shrinkage in width direction before BH steel welding；Welding flaw detection is qualified Afterwards, it is necessary to be corrected, the angular deformation of control bending and torsional deformation and section；

The vertical T-steel group is specially that bottom wing listrium is placed in the vertical machine horizontal rail of group, and adjustment positioning device is located at The vertical horizontal rail center of group, then assembles web, carries out end dislocation adjustment, adjusts web using web positioning mechanism, be allowed to It is aligned and holds out against with bottom wing listrium center, check the verticality of web off-centring and bottom wing listrium and web, it is qualified laggard Row positioning welding；The vertical H profile steel group is specially that top flange plate is placed in the vertical machine horizontal rail of group, and adjustment positioning device makes It is located at the vertical horizontal rail center of group, and then T-steel is assembled on top flange plate, end dislocation adjustment is carried out, using web Positioning mechanism adjusts T-steel web, is allowed to be aligned and hold out against with top flange plate center, checks web center offset, top flange The verticality and sectional dimension of plate and web carry out positioning welding after qualified.

6) production of steel column:

For the straight bracket of steel column, a root long I-steel, re-segmenting cutting are first formed；To Irregular parts using under automatic cutting Material；When to wing plate, the web blanking of steel column, length direction lengthens 30mm surplus, and wing plate width does not put surplus, and web width permits Perhaps 0 ~+2mm；Per pass strength plate shrinkage is 0.4mm；Column and bottom plate milling flat-top are tight；When secondary stuff-assignment, it is desirable that steel column, which first mills, puts down, so It crossed, drilled on the basis of one end afterwards, then carry out bracket assembling, stiffener assembling, after welding is qualified, yet another end takes length Welding equipment column base plate turns next process after the assay was approved；

Further include web and the steel column of the bracket in the production of the steel column for the milling tight fillet weld of flat-top, bracket wing plate with Steel column is groove penetration weld；Reinforcing rib of the steel column at bracket is groove penetration weld with column wing plate, is fillet weld with column web； When assembling bracket, the fitted position of bracket to steel column allows plus tolerance 2mm；When bracket on steel column is crane beam support, support The lower end planing of stiffener is held out against, and guarantees the levelness and verticality of surface planing；Length is when bracket and connecting plate assemble with disconnected milling End is positioning datum, and level is using column center as positioning datum；All steel columns and steel column, it is end plate that steel column is docked with girder steel, double Shear needs first ball blast, it is ensured that welding, end plate and column is reassembled after coefficient of friction is qualified, beam connection is welded using groove.

7) production of roof girder:

For welded H section steel, the splicing seams of flange plate and web should be staggered 200 or more, and weld seam grade is second level, for hot rolling H The splicing welding joint of fashioned iron, flange plate and web need not be staggered, and weld seam grade is second level；Roof girder presses 1/500 arch camber, and production will be put It is welded using automatic welding in the section of ground sample, welded H section steel；Before roof girder assembling, plus tolerance assembly need to be carried out, after welding, if structure When part overall length plus tolerance is overproof, it can be allowed to shrink 1mm with thermal recalibration, reached within the margin of tolerance, be unable to negative common difference assembly；

The requirement of the plus tolerance assembly are as follows: when L≤10 meter, when build-up tolerance is+1.5~+2, L >=10 meter, build-up tolerance It is+3~+4.

8) production of crane girder:

The upper and lower wing plate and web attachment weld fillet weld of crane girder, face of weld are made into form of straight lines or spill；On crane girder Weld seam both ends add run-on tab and arc-extinguishing plate；To be welded finish removes run-on tab and when arc-extinguishing plate, uses sand after need to being sliced off with gas cutting Wheel polishing, is allowed to smooth with base metal；When the wing web of crane girder needs splicing, splice point should in away from 1/3 range of beam-ends, on The splice point of lower wing plate and web should mutually stagger 200mm or more, and avoid hole, weld seam, gusset 200mm or more；On upper flange It is polished after the splicing welding joint flaw detection on surface is qualified；It is welded after should being held out against with upper flange planing the upper end of the ribbed stiffener of crane girder；

9) drilling:

High-strength bolt connecting hole, using drilling via formations；Need to cross the workpiece of drilling, first draw the center line in reference line and hole, hole The heart stamps foreign punching；In the case of more than regular for hole group's size or identical size hole group distribution, drilled on first drilling machine using overlay film, And drilling template is processed in advance；For using high-strength bolt and the bolted part of installation, using machine drilling；The height The hole of strength bolt is I pores, and installation bolt is II pores；Polishing removal burr is needed after all drilling processings；

The hole wall surface of the I pores is coarse≤and 12.5 μm；Hole wall surface roughness≤25 μm in the hole II；The aperture in the hole II permits Perhaps deviation are as follows: diameter+1.0~2.0mm, circularity 2.0mm, verticality 0.03t, and should not exceed 2.0mm.

10) derusting, anticorrosion:

A, the workpiece that need to carry out galvanizing by dipping black part inspection: is subjected to black part inspection；

B, pendant: first checking suspender, and plating piece is then carried out classification hanging according to material, material shape, material specification；

C, pickling and rinsing: plating piece is placed in pickling solution, in acid cleaning process, by vibration 2 ~ 3 times above and below workpiece, and is proposed Liquid level checks pickling quality, pickling is carried out again after being brushed with tool to the surface of the deficient pickling in part, to reach plating piece surface No residual oxide layer and the attachment of other pollutants, surface are in greyish white gloss；The pickling solution is dilute hydrochloric acid, and working concentration is 40 grams per liter solution, pickling temperature are room temperature, pickling time 30min；The plating piece of pickling qualification is entered potcher to rush through flowing water It washes, removes pickling solution remained on surface, after plating piece is hung out from potcher, stopped on slot no less than 15 seconds, wait drip surface area After water, fluxing agent processing is carried out immediately；The rinse water keeps flowing cleaning, and pH value is greater than 6；

The pickling solution is also added with fog inhibitor, and the additive amount of the fog inhibitor is 0.1%, the fog inhibitor include with The raw material of lower parts by weight: nonionic surfactant 4%, amine organic matter 8%, remaining is water.

The nonionic surfactant is octyl phenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, high-carbon fatty alcohol Polyoxyethylene ether, polyoxyethylene carboxylate, fatty acid methyl ester ethoxylate, polyether nonionic surfactant, fat Sour sorbitan ester, sucrose fatty ester；The amine organic matter is aniline, ethylenediamine, triethanolamine, acetamide, hexamethylene Amine.

D, fluxing agent is handled: the plating piece after sufficiently rinsing is impregnated completely into solvent processing is carried out in fluxing agent solution Time is 1min；

E, it is dried: hot-air drying, baking time 2min, until plating piece fills being carried out to plating piece using 100 DEG C of hot-airs Divide drying；

F, galvanizing by dipping:

Plating piece after being dried is subjected to galvanizing by dipping immediately, it is first that the oxide layer of liquid level is clear before plating piece enters zinc liquid It removes, then steady slowly to tilt plating piece or be placed vertically in zinc liquid, it is 100mm that zinc liquid depth is immersed in plating piece upper surface, And suitably carry out vibration up and down；It when plating piece proposes, keeps liquid level without zinc gray and foreign matter, while keeping plating piece inclination or vertical, and Vibration in time, removes extra zinc；Plating piece immerses cooling bath immediately after proposing, air cooling time controlled in 80 seconds；

G, cooling: coolant water temperature submerges plating piece when hereinafter, cooling at 60 DEG C, and cooling water quality is limpid, keeps stream It is dynamic, PH 6；

H, Passivation Treatment and rinsing: being passivated processing for plating piece after cooling in passivating solution, when passivation extremely by plating piece vibration Few 1 time, obtained passivating film with glassy yellow be it is normal, wipe not falling for test stone with finger；The workpiece that passivation comes out carries out Rinsing, rinsing temperature is less than 50 DEG C, the limpid free from extraneous odour of rinse water, rinsing time 10s；

I, discharging, inspection, finishing: carrying out discharging after hanger supports, removes plating piece surface residual debris and drop tumor；It goes sightseeing outside plating piece It is sliding, impulse- free robustness, drop tumor, peeling, pitted skin, extra agglomeration and zinc gray, zero defect.

11) it assembles: workpiece is obtained according to drawing or actual conditions by above-mentioned steps, being assembled.

Embodiment 2

A kind of steel structure processing technology, comprising the following steps:

1) inspection of raw and process materials:

The inspection of raw and process materials guarantees that all raw material meets existing country and industry standard；Wherein, steel are in the raw material Q345B steel, Q235B steel；Bolt is 10.9 grades of torque-shear type high-strength bolts；The Q345B steel surface coefficient of sliding resistance is not The steel coefficient of sliding resistance obtained less than 0.45, Q235B and same material cannot be less than 0.4；

2) setting-out, jacking:

Setting-out is first carried out before processing, and whether check drawing wrong, carry out jacking using drawing after confirmation, before jacking, First it is familiar with drawing and technique requirement, then carries out a number material；After steel plate scribing line, indicates reference line, center line and examine control point；Structure The material-saving seam of part needs to have in jacking figure or component diagram clearly to identify, and notifies to issue the vertical section of blanking section, H group, secondary operation Section and erection welding section；Groove type or groove length are indicated when all connecting plates or H profile steel discharge, indicate the splice bits of splicing weld seam It sets；

The tolerance of the setting-out is respectively as follows: ± 0.5 mm of parallel lines distance and fragment size, ± 1 mm of diagonal line, length 0~+0.5 mm, 0~-0.5 mm of width, ± 0.5 mm of pitch-row, the angle ± 20 ' for processing template.

3) blanking, cutting:

Steel are cut, first guarantee that greasy dirt, iron rust, the oxide on steel surface are removed completely, after cutting before cutting It is polished using grinding wheel on non-assembly side；

Described is cut into one of automatic cutting, semi-automatic cutting, hand cut or a variety of；The automatic gas cutting slot Width is 3mm；The cut surface requirement is that the allowable error of the roughness of cutting section is groove face≤0.2mm, free margins ≤0.1mm；The allowable error of the local score of cutting section is groove face d≤1.0mm, free margins d≤0.5mm；Cutting section Verticality e allowable error be t≤20mm, e≤1mm, t > 20mm, e < t/20.

4) splicing:

Splicing must be carried out by surveying on flat platform, level error≤3mm of platform, and wing plate, web need to be staggered at splicing 200mm or more；The splicing of wing plate is long wide not less than 2 times of wing plate, and the splicing of web is long to be not less than not less than 600mm, width 300mm；Bracket or even section plate 200mm or more need to be avoided at splicing；Avoid Kong Qun at splicing seam, away from most lateral opening position 120mm with On；Component length L≤6m allows to have a splicing welding joint, 10m >=L > 6m, allows to have two splicing welding joints, and L > 10m allows There are three splicing welding joints；Center will be aligned when splicing, and groove and two sides 50mm are polished to exposing metallic luster before splicing；Steel When plate thickness is greater than 30mm, need to be heat-treated before welding, 100 DEG C of minimum preheating temperature, 350 DEG C of interlayer temperature, for node Position will preheat before weldering；Full penetration construction joint should carry out 100%UT flaw detection and 100%WT flaw detection, important partial penetration weld It should carry out MT flaw detection；All splicing welding joints should all add run-on tab, arc-extinguishing plate, need to use flame or machine cuts, must not hammer, to cutting Cut place's polishing or planing；

5) H profile steel group is vertical and welds:

T-steel group is vertical before this headed by BH fashioned iron group is vertical, then is that H profile steel group is vertical；Then positioning welding is carried out；BH fashioned iron is welded with The splicing of the length of the edge of a wing and web and longitudinal seam welding；Web and the longitudinal seam on the edge of a wing require to weld according to technical conditions It is fillet weld that H profile steel web thickness, which is less than 20mm, and web thickness is greater than 20mm for the weldering of groove partial penetrated；Postwelding thoroughly removes molten Slag, positioning welding line is cracked should remove after reweld；Tack welding avoids state pause judgments and corner's welding in weld seam, T shape Connector is symmetrically carried out in two sides；Forbid the striking blow-out on the base material other than welding region；Tack welding size is no more than design ruler Very little 2/3, having a size of between 4 ~ 8mm；Package size places 3mm shrinkage in width direction before BH steel welding；Welding flaw detection is closed After lattice, it is necessary to be corrected, the angular deformation of control bending and torsional deformation and section；

The vertical T-steel group is specially that bottom wing listrium is placed in the vertical machine horizontal rail of group, and adjustment positioning device is located at The vertical horizontal rail center of group, then assembles web, carries out end dislocation adjustment, adjusts web using web positioning mechanism, be allowed to It is aligned and holds out against with bottom wing listrium center, check the verticality of web off-centring and bottom wing listrium and web, it is qualified laggard Row positioning welding；The vertical H profile steel group is specially that top flange plate is placed in the vertical machine horizontal rail of group, and adjustment positioning device makes It is located at the vertical horizontal rail center of group, and then T-steel is assembled on top flange plate, end dislocation adjustment is carried out, using web Positioning mechanism adjusts T-steel web, is allowed to be aligned and hold out against with top flange plate center, checks web center offset, top flange The verticality and sectional dimension of plate and web carry out positioning welding after qualified.

6) production of steel column:

For the straight bracket of steel column, a root long I-steel, re-segmenting cutting are first formed；To Irregular parts using under automatic cutting Material；When to wing plate, the web blanking of steel column, length direction lengthens 30mm surplus, and wing plate width does not put surplus, and web width permits Perhaps 0 ~+2mm；Per pass strength plate shrinkage is 0.5mm；Column and bottom plate milling flat-top are tight；When secondary stuff-assignment, it is desirable that steel column, which first mills, puts down, so It crossed, drilled on the basis of one end afterwards, then carry out bracket assembling, stiffener assembling, after welding is qualified, yet another end takes length Welding equipment column base plate turns next process after the assay was approved；

Further include web and the steel column of the bracket in the production of the steel column for the milling tight fillet weld of flat-top, bracket wing plate with Steel column is groove penetration weld；Reinforcing rib of the steel column at bracket is groove penetration weld with column wing plate, is fillet weld with column web； When assembling bracket, the fitted position of bracket to steel column allows plus tolerance 2mm；When bracket on steel column is crane beam support, support The lower end planing of stiffener is held out against, and guarantees the levelness and verticality of surface planing；Length is when bracket and connecting plate assemble with disconnected milling End is positioning datum, and level is using column center as positioning datum；All steel columns and steel column, it is end plate that steel column is docked with girder steel, double Shear needs first ball blast, it is ensured that welding, end plate and column is reassembled after coefficient of friction is qualified, beam connection is welded using groove.

7) production of roof girder:

For welded H section steel, the splicing seams of flange plate and web should be staggered 200 or more, and weld seam grade is second level, for hot rolling H The splicing welding joint of fashioned iron, flange plate and web need not be staggered, and weld seam grade is second level；Roof girder presses 1/500 arch camber, and production will be put It is welded using automatic welding in the section of ground sample, welded H section steel；Before roof girder assembling, plus tolerance assembly need to be carried out, after welding, if structure When part overall length plus tolerance is overproof, it can be allowed to shrink 1~2mm with thermal recalibration, reached within the margin of tolerance, be unable to negative common difference dress Match；

The requirement of the plus tolerance assembly are as follows: when L≤10 meter, when build-up tolerance is+1.5~+2, L >=10 meter, build-up tolerance It is+3~+4.

8) production of crane girder:

The upper and lower wing plate and web attachment weld fillet weld of crane girder, face of weld are made into form of straight lines or spill；On crane girder Weld seam both ends add run-on tab and arc-extinguishing plate；To be welded finish removes run-on tab and when arc-extinguishing plate, uses sand after need to being sliced off with gas cutting Wheel polishing, is allowed to smooth with base metal；When the wing web of crane girder needs splicing, splice point should in away from 1/3 range of beam-ends, on The splice point of lower wing plate and web should mutually stagger 200mm or more, and avoid hole, weld seam, gusset 200mm or more；On upper flange It is polished after the splicing welding joint flaw detection on surface is qualified；It is welded after should being held out against with upper flange planing the upper end of the ribbed stiffener of crane girder；

9) drilling:

High-strength bolt connecting hole, using drilling via formations；Need to cross the workpiece of drilling, first draw the center line in reference line and hole, hole The heart stamps foreign punching；In the case of more than regular for hole group's size or identical size hole group distribution, drilled on first drilling machine using overlay film, And drilling template is processed in advance；For using high-strength bolt and the bolted part of installation, using machine drilling；The height The hole of strength bolt is I pores, and installation bolt is II pores；Polishing removal burr is needed after all drilling processings；

The hole wall surface of the I pores is coarse≤and 12.5 μm；Hole wall surface roughness≤25 μm in the hole II；The aperture in the hole II permits Perhaps deviation are as follows: diameter+1.0~2.0mm, circularity 2.0mm, verticality 0.03t, and should not exceed 2.0mm.

10) derusting, anticorrosion:

A, the workpiece that need to carry out galvanizing by dipping black part inspection: is subjected to black part inspection；

B, pendant: first checking suspender, and plating piece is then carried out classification hanging according to material, material shape, material specification；

C, pickling and rinsing: plating piece is placed in pickling solution, in acid cleaning process, by vibration 2 ~ 3 times above and below workpiece, and is proposed Liquid level checks pickling quality, pickling is carried out again after being brushed with tool to the surface of the deficient pickling in part, to reach plating piece surface No residual oxide layer and the attachment of other pollutants, surface are in greyish white gloss；The pickling solution is dilute hydrochloric acid, and working concentration is 200 grams per liter solution, pickling temperature are room temperature, pickling time 40min；The plating piece of pickling qualification is entered into potcher through flowing water It rinses, removes pickling solution remained on surface, after plating piece is hung out from potcher, stopped on slot no less than 15 seconds, wait drip surface After ponding, fluxing agent processing is carried out immediately；The rinse water keeps flowing cleaning, and pH value is greater than 6；

The pickling solution is also added with fog inhibitor, and the additive amount of the fog inhibitor is 1.5%, the fog inhibitor include with The raw material of lower parts by weight: nonionic surfactant 10%, amine organic matter 15%, remaining is water.

The nonionic surfactant is high-carbon fatty alcohol polyoxyethylene ether, polyoxyethylene carboxylate, fatty acid Methyl ester ethoxylates, polyether nonionic surfactant；The amine organic matter is aniline, ethylenediamine.

D, fluxing agent is handled: the plating piece after sufficiently rinsing is impregnated completely into solvent processing is carried out in fluxing agent solution Time is 2min；

E, it is dried: hot-air drying, baking time 5min, until plating piece fills being carried out to plating piece using 150 DEG C of hot-airs Divide drying；

F, galvanizing by dipping:

Plating piece after being dried is subjected to galvanizing by dipping immediately, it is first that the oxide layer of liquid level is clear before plating piece enters zinc liquid It removes, then steady slowly to tilt plating piece or be placed vertically in zinc liquid, it is 400mm that zinc liquid depth is immersed in plating piece upper surface, And suitably carry out vibration up and down；It when plating piece proposes, keeps liquid level without zinc gray and foreign matter, while keeping plating piece inclination or vertical, and Vibration in time, removes extra zinc；Plating piece immerses cooling bath immediately after proposing, air cooling time controlled in 80 seconds；

G, cooling: coolant water temperature submerges plating piece when hereinafter, cooling at 60 DEG C, and cooling water quality is limpid, keeps stream It is dynamic, PH 8；

H, Passivation Treatment and rinsing: being passivated processing for plating piece after cooling in passivating solution, when passivation extremely by plating piece vibration Few 1 time, obtained passivating film with glassy yellow be it is normal, wipe not falling for test stone with finger；The workpiece that passivation comes out carries out Rinsing, rinsing temperature is less than 50 DEG C, the limpid free from extraneous odour of rinse water, rinsing time 30s；

I, discharging, inspection, finishing: carrying out discharging after hanger supports, removes plating piece surface residual debris and drop tumor；It goes sightseeing outside plating piece It is sliding, impulse- free robustness, drop tumor, peeling, pitted skin, extra agglomeration and zinc gray, zero defect.

11) it assembles: workpiece is obtained according to drawing or actual conditions by above-mentioned steps, being assembled.

Embodiment 3

A kind of steel structure processing technology, comprising the following steps:

1) inspection of raw and process materials:

The inspection of raw and process materials guarantees that all raw material meets existing country and industry standard；Wherein, steel are in the raw material Q345B steel, Q235B steel；Bolt is 10.9 grades of torque-shear type high-strength bolts；The Q345B steel surface coefficient of sliding resistance is not The steel coefficient of sliding resistance obtained less than 0.45, Q235B and same material cannot be less than 0.4；

2) setting-out, jacking:

Setting-out is first carried out before processing, and whether check drawing wrong, carry out jacking using drawing after confirmation, before jacking, First it is familiar with drawing and technique requirement, then carries out a number material；After steel plate scribing line, indicates reference line, center line and examine control point；Structure The material-saving seam of part needs to have in jacking figure or component diagram clearly to identify, and notifies to issue the vertical section of blanking section, H group, secondary operation Section and erection welding section；Groove type or groove length are indicated when all connecting plates or H profile steel discharge, indicate the splice bits of splicing weld seam It sets；

The tolerance of the setting-out is respectively as follows: ± 0.5 mm of parallel lines distance and fragment size, ± 1 mm of diagonal line, length 0~+0.5 mm, 0~-0.5 mm of width, ± 0.5 mm of pitch-row, the angle ± 20 ' for processing template.

3) blanking, cutting:

Steel are cut, first guarantee that greasy dirt, iron rust, the oxide on steel surface are removed completely, after cutting before cutting It is polished using grinding wheel on non-assembly side；

Described is cut into one of automatic cutting, semi-automatic cutting, hand cut or a variety of；The automatic gas cutting slot Width is 3mm；The cut surface requirement is that the allowable error of the roughness of cutting section is groove face≤0.2mm, free margins ≤0.1mm；The allowable error of the local score of cutting section is groove face d≤1.0mm, free margins d≤0.5mm；Cutting section Verticality e allowable error be t≤20mm, e≤1mm, t > 20mm, e < t/20.

4) splicing:

Splicing must be carried out by surveying on flat platform, level error≤3mm of platform, and wing plate, web need to be staggered at splicing 200mm or more；The splicing of wing plate is long wide not less than 2 times of wing plate, and the splicing of web is long to be not less than not less than 600mm, width 300mm；Bracket or even section plate 200mm or more need to be avoided at splicing；Avoid Kong Qun at splicing seam, away from most lateral opening position 120mm with On；Component length L≤6m allows to have a splicing welding joint, 10m >=L > 6m, allows to have two splicing welding joints, and L > 10m allows There are three splicing welding joints；Center will be aligned when splicing, and groove and two sides 50mm are polished to exposing metallic luster before splicing；Steel When plate thickness is greater than 30mm, need to be heat-treated before welding, 100 DEG C of minimum preheating temperature, 200 DEG C of interlayer temperature, for node Position will preheat before weldering；Full penetration construction joint should carry out 100%UT flaw detection and 100%WT flaw detection, important partial penetration weld It should carry out MT flaw detection；All splicing welding joints should all add run-on tab, arc-extinguishing plate, need to use flame or machine cuts, must not hammer, to cutting Cut place's polishing or planing；

5) H profile steel group is vertical and welds:

T-steel group is vertical before this headed by BH fashioned iron group is vertical, then is that H profile steel group is vertical；Then positioning welding is carried out；BH fashioned iron is welded with The splicing of the length of the edge of a wing and web and longitudinal seam welding；Web and the longitudinal seam on the edge of a wing require to weld according to technical conditions It is fillet weld that H profile steel web thickness, which is less than 20mm, and web thickness is greater than 20mm for the weldering of groove partial penetrated；Postwelding thoroughly removes molten Slag, positioning welding line is cracked should remove after reweld；Tack welding avoids state pause judgments and corner's welding in weld seam, T shape Connector is symmetrically carried out in two sides；Forbid the striking blow-out on the base material other than welding region；Tack welding size is no more than design ruler Very little 2/3, having a size of between 6mm；Package size places 2.5mm shrinkage in width direction before BH steel welding；Welding flaw detection is closed After lattice, it is necessary to be corrected, the angular deformation of control bending and torsional deformation and section；

The vertical T-steel group is specially that bottom wing listrium is placed in the vertical machine horizontal rail of group, and adjustment positioning device is located at The vertical horizontal rail center of group, then assembles web, carries out end dislocation adjustment, adjusts web using web positioning mechanism, be allowed to It is aligned and holds out against with bottom wing listrium center, check the verticality of web off-centring and bottom wing listrium and web, it is qualified laggard Row positioning welding；The vertical H profile steel group is specially that top flange plate is placed in the vertical machine horizontal rail of group, and adjustment positioning device makes It is located at the vertical horizontal rail center of group, and then T-steel is assembled on top flange plate, end dislocation adjustment is carried out, using web Positioning mechanism adjusts T-steel web, is allowed to be aligned and hold out against with top flange plate center, checks web center offset, top flange The verticality and sectional dimension of plate and web carry out positioning welding after qualified.

6) production of steel column:

For the straight bracket of steel column, a root long I-steel, re-segmenting cutting are first formed；To Irregular parts using under automatic cutting Material；When to wing plate, the web blanking of steel column, length direction lengthens 30mm surplus, and wing plate width does not put surplus, and web width permits Perhaps 0 ~+2mm；Per pass strength plate shrinkage is 0.45mm；Column and bottom plate milling flat-top are tight；When secondary stuff-assignment, it is desirable that steel column, which first mills, puts down, so It crossed, drilled on the basis of one end afterwards, then carry out bracket assembling, stiffener assembling, after welding is qualified, yet another end takes length Welding equipment column base plate turns next process after the assay was approved；

Further include web and the steel column of the bracket in the production of the steel column for the milling tight fillet weld of flat-top, bracket wing plate with Steel column is groove penetration weld；Reinforcing rib of the steel column at bracket is groove penetration weld with column wing plate, is fillet weld with column web； When assembling bracket, the fitted position of bracket to steel column allows plus tolerance 2mm；When bracket on steel column is crane beam support, support The lower end planing of stiffener is held out against, and guarantees the levelness and verticality of surface planing；Length is when bracket and connecting plate assemble with disconnected milling End is positioning datum, and level is using column center as positioning datum；All steel columns and steel column, it is end plate that steel column is docked with girder steel, double Shear needs first ball blast, it is ensured that welding, end plate and column is reassembled after coefficient of friction is qualified, beam connection is welded using groove.

7) production of roof girder:

For welded H section steel, the splicing seams of flange plate and web should be staggered 200 or more, and weld seam grade is second level, for hot rolling H The splicing welding joint of fashioned iron, flange plate and web need not be staggered, and weld seam grade is second level；Roof girder presses 1/500 arch camber, and production will be put It is welded using automatic welding in the section of ground sample, welded H section steel；Before roof girder assembling, plus tolerance assembly need to be carried out, after welding, if structure When part overall length plus tolerance is overproof, it can be allowed to shrink 1.5mm with thermal recalibration, reached within the margin of tolerance, be unable to negative common difference dress Match；

The requirement of the plus tolerance assembly are as follows: when L≤10 meter, when build-up tolerance is+1.5~+2, L >=10 meter, build-up tolerance It is+3~+4.

8) production of crane girder:

The upper and lower wing plate and web attachment weld fillet weld of crane girder, face of weld are made into form of straight lines or spill；On crane girder Weld seam both ends add run-on tab and arc-extinguishing plate；To be welded finish removes run-on tab and when arc-extinguishing plate, uses sand after need to being sliced off with gas cutting Wheel polishing, is allowed to smooth with base metal；When the wing web of crane girder needs splicing, splice point should in away from 1/3 range of beam-ends, on The splice point of lower wing plate and web should mutually stagger 200mm or more, and avoid hole, weld seam, gusset 200mm or more；On upper flange It is polished after the splicing welding joint flaw detection on surface is qualified；It is welded after should being held out against with upper flange planing the upper end of the ribbed stiffener of crane girder；

9) drilling:

High-strength bolt connecting hole, using drilling via formations；Need to cross the workpiece of drilling, first draw the center line in reference line and hole, hole The heart stamps foreign punching；In the case of more than regular for hole group's size or identical size hole group distribution, drilled on first drilling machine using overlay film, And drilling template is processed in advance；For using high-strength bolt and the bolted part of installation, using machine drilling；The height The hole of strength bolt is I pores, and installation bolt is II pores；Polishing removal burr is needed after all drilling processings；

The hole wall surface of the I pores is coarse≤and 12.5 μm；Hole wall surface roughness≤25 μm in the hole II；The aperture in the hole II permits Perhaps deviation are as follows: diameter+1.0~2.0mm, circularity 2.0mm, verticality 0.03t, and should not exceed 2.0mm.

10) derusting, anticorrosion:

A, the workpiece that need to carry out galvanizing by dipping black part inspection: is subjected to black part inspection；

B, pendant: first checking suspender, and plating piece is then carried out classification hanging according to material, material shape, material specification；

C, pickling and rinsing: plating piece is placed in pickling solution, in acid cleaning process, by vibration 2 ~ 3 times above and below workpiece, and is proposed Liquid level checks pickling quality, pickling is carried out again after being brushed with tool to the surface of the deficient pickling in part, to reach plating piece surface No residual oxide layer and the attachment of other pollutants, surface are in greyish white gloss；The pickling solution is dilute hydrochloric acid, and working concentration is 100 grams per liter solution, pickling temperature are room temperature, pickling time 35min；The plating piece of pickling qualification is entered into potcher through flowing water It rinses, removes pickling solution remained on surface, after plating piece is hung out from potcher, stopped on slot no less than 15 seconds, wait drip surface After ponding, fluxing agent processing is carried out immediately；The rinse water keeps flowing cleaning, and pH value is greater than 6；

The pickling solution is also added with fog inhibitor, and the additive amount of the fog inhibitor is 1%, and the fog inhibitor includes following The raw material of parts by weight: nonionic surfactant 6%, amine organic matter 10%, remaining is water.

The nonionic surfactant is octyl phenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, fatty acid dehydration Sorbitol ester, sucrose fatty ester；The amine organic matter is triethanolamine, acetamide, cyclohexylamine.

D, fluxing agent is handled: the plating piece after sufficiently rinsing is impregnated completely into solvent processing is carried out in fluxing agent solution Time is 1.5min；

E, it is dried: hot-air drying, baking time 3min, until plating piece fills being carried out to plating piece using 120 DEG C of hot-airs Divide drying；

F, galvanizing by dipping:

Plating piece after being dried is subjected to galvanizing by dipping immediately, it is first that the oxide layer of liquid level is clear before plating piece enters zinc liquid It removes, then steady slowly to tilt plating piece or be placed vertically in zinc liquid, it is 250mm that zinc liquid depth is immersed in plating piece upper surface, And suitably carry out vibration up and down；It when plating piece proposes, keeps liquid level without zinc gray and foreign matter, while keeping plating piece inclination or vertical, and Vibration in time, removes extra zinc；Plating piece immerses cooling bath immediately after proposing, air cooling time controlled in 80 seconds；

G, cooling: coolant water temperature submerges plating piece when hereinafter, cooling at 60 DEG C, and cooling water quality is limpid, keeps stream It is dynamic, PH 7；

H, Passivation Treatment and rinsing: being passivated processing for plating piece after cooling in passivating solution, when passivation extremely by plating piece vibration Few 1 time, obtained passivating film with glassy yellow be it is normal, wipe not falling for test stone with finger；The workpiece that passivation comes out carries out Rinsing, rinsing temperature is less than 50 DEG C, the limpid free from extraneous odour of rinse water, rinsing time 20s；

I, discharging, inspection, finishing: carrying out discharging after hanger supports, removes plating piece surface residual debris and drop tumor；It goes sightseeing outside plating piece It is sliding, impulse- free robustness, drop tumor, peeling, pitted skin, extra agglomeration and zinc gray, zero defect.

11) it assembles: workpiece is obtained according to drawing or actual conditions by above-mentioned steps, being assembled.

Claims (10)

1. a kind of steel structure processing technology, it is characterised in that the following steps are included:

1) inspection of raw and process materials:

The inspection of raw and process materials guarantees that all raw material meets existing country and industry standard；

2) setting-out, jacking:

Setting-out is first carried out before processing, and whether check drawing wrong, carry out jacking using drawing after confirmation, before jacking, First it is familiar with drawing and technique requirement, then carries out a number material；After steel plate scribing line, indicates reference line, center line and examine control point；Structure The material-saving seam of part needs to have in jacking figure or component diagram clearly to identify, and notifies to issue the vertical section of blanking section, H group, secondary operation Section and erection welding section；Groove type or groove length are indicated when all connecting plates or H profile steel discharge, indicate the splice bits of splicing weld seam It sets；

3) blanking, cutting:

Steel are cut, first guarantee that greasy dirt, iron rust, the oxide on steel surface are removed completely, after cutting before cutting It is polished using grinding wheel on non-assembly side；

4) splicing:

Splicing must be carried out by surveying on flat platform, level error≤3mm of platform, and wing plate, web need to be staggered at splicing 200mm or more；The splicing of wing plate is long wide not less than 2 times of wing plate, and the splicing of web is long to be not less than not less than 600mm, width 300mm；Bracket or even section plate 200mm or more need to be avoided at splicing；Avoid Kong Qun at splicing seam, away from most lateral opening position 120mm with On；Component length L≤6m allows to have a splicing welding joint, 10m >=L > 6m, allows to have two splicing welding joints, and L > 10m allows There are three splicing welding joints；Center will be aligned when splicing, and groove and two sides 50mm are polished to exposing metallic luster before splicing；Steel When plate thickness is greater than 30mm, need to be heat-treated before welding, 100 DEG C of minimum preheating temperature, 100~350 DEG C of interlayer temperature, for Position of joints will preheat before weldering；Full penetration construction joint should carry out 100%UT flaw detection and 100%WT flaw detection, important non-full penetration Weld seam should carry out MT flaw detection；All splicing welding joints should all add run-on tab, arc-extinguishing plate, need to use flame or machine cuts, must not hammer, It polishes cut place or planes；

5) H profile steel group is vertical and welds:

T-steel group is vertical before this headed by BH fashioned iron group is vertical, then is that H profile steel group is vertical；Then positioning welding is carried out；BH fashioned iron is welded with The splicing of the length of the edge of a wing and web and longitudinal seam welding；Web and the longitudinal seam on the edge of a wing require to weld according to technical conditions It is fillet weld that H profile steel web thickness, which is less than 20mm, and web thickness is greater than 20mm for the weldering of groove partial penetrated；Postwelding thoroughly removes molten Slag, positioning welding line is cracked should remove after reweld；Tack welding avoids state pause judgments and corner's welding in weld seam, T shape Connector is symmetrically carried out in two sides；Forbid the striking blow-out on the base material other than welding region；Tack welding size is no more than design ruler Very little 2/3, having a size of between 4 ~ 8mm；Package size places 2~3mm shrinkage in width direction before BH steel welding；Welding is visited After wound is qualified, it is necessary to be corrected, the angular deformation of control bending and torsional deformation and section；

6) production of steel column:

For the straight bracket of steel column, a root long I-steel, re-segmenting cutting are first formed；To Irregular parts using under automatic cutting Material；When to wing plate, the web blanking of steel column, length direction lengthens 30mm surplus, and wing plate width does not put surplus, and web width permits Perhaps 0 ~+2mm；Per pass strength plate shrinkage is 0.4mm ~ 0.5mm；Column and bottom plate milling flat-top are tight；When secondary stuff-assignment, it is desirable that steel column first mills It is flat, it then crossed, drilled on the basis of one end, then carry out bracket assembling, stiffener assembling, it is yet another after welding is qualified End takes long welding equipment column base plate to turn next process after the assay was approved；

7) production of roof girder:

For welded H section steel, the splicing seams of flange plate and web should be staggered 200 or more, and weld seam grade is second level, for hot rolling H The splicing welding joint of fashioned iron, flange plate and web need not be staggered, and weld seam grade is second level；Roof girder presses 1/500 arch camber, and production will be put It is welded using automatic welding in the section of ground sample, welded H section steel；Before roof girder assembling, plus tolerance assembly need to be carried out, after welding, if structure When part overall length plus tolerance is overproof, it can be allowed to shrink 1~2mm with thermal recalibration, reached within the margin of tolerance, be unable to negative common difference dress Match；

8) production of crane girder:

The upper and lower wing plate and web attachment weld fillet weld of crane girder, face of weld are made into form of straight lines or spill；On crane girder Weld seam both ends add run-on tab and arc-extinguishing plate；To be welded finish removes run-on tab and when arc-extinguishing plate, uses sand after need to being sliced off with gas cutting Wheel polishing, is allowed to smooth with base metal；When the wing web of crane girder needs splicing, splice point should in away from 1/3 range of beam-ends, on The splice point of lower wing plate and web should mutually stagger 200mm or more, and avoid hole, weld seam, gusset 200mm or more；On upper flange It is polished after the splicing welding joint flaw detection on surface is qualified；It is welded after should being held out against with upper flange planing the upper end of the ribbed stiffener of crane girder；

9) drilling:

High-strength bolt connecting hole, using drilling via formations；Need to cross the workpiece of drilling, first draw the center line in reference line and hole, hole The heart stamps foreign punching；In the case of more than regular for hole group's size or identical size hole group distribution, drilled on first drilling machine using overlay film, And drilling template is processed in advance；For using high-strength bolt and the bolted part of installation, using machine drilling；The height The hole of strength bolt is I pores, and installation bolt is II pores；Polishing removal burr is needed after all drilling processings；

10) derusting, anticorrosion:

A, the workpiece that need to carry out galvanizing by dipping black part inspection: is subjected to black part inspection；

B, pendant: first checking suspender, and plating piece is then carried out classification hanging according to material, material shape, material specification；

C, pickling and rinsing: plating piece is placed in pickling solution, in acid cleaning process, by vibration 2 ~ 3 times above and below workpiece, and is proposed Liquid level checks pickling quality, pickling is carried out again after being brushed with tool to the surface of the deficient pickling in part, to reach plating piece surface No residual oxide layer and the attachment of other pollutants, surface are in greyish white gloss；The pickling solution is dilute hydrochloric acid, and working concentration is 40 ~ 200 grams per liter solution, pickling temperature are room temperature, pickling time 30-40min；The plating piece of pickling qualification is entered into potcher It is rinsed through flowing water, removes pickling solution remained on surface, after plating piece is hung out from potcher, stopped on slot no less than 15 seconds, wait drip After removing surface area water, fluxing agent processing is carried out immediately；The rinse water keeps flowing cleaning, and pH value is greater than 6；

D, fluxing agent is handled: the plating piece after sufficiently rinsing is completely into progress solvent processing, soaking time in fluxing agent solution For 1 ~ 2min；

E, it being dried: hot-air drying being carried out to plating piece using 100 ~ 150 DEG C of hot-airs, baking time is 2 ~ 5min, until Plating piece is sufficiently dry；

F, galvanizing by dipping:

Plating piece after being dried is subjected to galvanizing by dipping immediately, it is first that the oxide layer of liquid level is clear before plating piece enters zinc liquid Remove, it is then steady that slowly plating piece is tilted or is placed vertically in zinc liquid, plating piece upper surface immerse zinc liquid depth be 100 ~ 400mm, and suitably carry out vibration up and down；It when plating piece proposes, keeps liquid level without zinc gray and foreign matter, while plating piece being kept to tilt or hang down Directly, and in time it vibrates, removes extra zinc；Plating piece immerses cooling bath immediately after proposing, air cooling time controlled in 80 seconds；

G, cooling: coolant water temperature submerges plating piece when hereinafter, cooling at 60 DEG C, and cooling water quality is limpid, keeps stream It is dynamic, PH 6 ~ 8；

H, Passivation Treatment and rinsing: being passivated processing for plating piece after cooling in passivating solution, when passivation extremely by plating piece vibration Few 1 time, obtained passivating film with glassy yellow be it is normal, wipe not falling for test stone with finger；The workpiece that passivation comes out carries out Rinsing, rinsing temperature is less than 50 DEG C, the limpid free from extraneous odour of rinse water, and rinsing time is 10 ~ 30s；

I, discharging, inspection, finishing: carrying out discharging after hanger supports, removes plating piece surface residual debris and drop tumor；It goes sightseeing outside plating piece It is sliding, impulse- free robustness, drop tumor, peeling, pitted skin, extra agglomeration and zinc gray, zero defect；

11) it assembles: workpiece is obtained according to drawing or actual conditions by above-mentioned steps, being assembled.

2. steel structure processing technology according to claim 1, it is characterised in that steel are in raw material described in step (1) Q345B steel, Q235B steel；Bolt is 10.9 grades of torque-shear type high-strength bolts；The Q345B steel surface coefficient of sliding resistance is not The steel coefficient of sliding resistance obtained less than 0.45, Q235B and same material cannot be less than 0.4.

3. steel structure processing technology according to claim 1, it is characterised in that the tolerance of setting-out described in step (2) It is respectively as follows: ± 0.5 mm of parallel lines distance and fragment size, ± 1 mm of diagonal line, 0~+0.5 mm of length, width 0~-0.5 ± 0.5 mm of mm, pitch-row, the angle ± 20 ' for processing template.

4. steel structure processing technology according to claim 1, it is characterised in that be cut into described in step (3) and cut automatically It cuts, one of semi-automatic cutting, hand cut or a variety of；The automatic gas cutting slot width is 3mm；The cut surface It is required that be the allowable error of the roughness of cutting section be groove face≤0.2mm, free margins≤0.1mm；The part of cutting section The allowable error of score is groove face d≤1.0mm, free margins d≤0.5mm；The allowable error of the verticality e of cutting section is t ≤ 20mm, e≤1mm, t > 20mm, e < t/20.

5. steel structure processing technology according to claim 1, it is characterised in that T-steel group described in step (5) is vertical specific For bottom wing listrium is placed in the vertical machine horizontal rail of group, adjustment positioning device is located at the vertical horizontal rail center of group, then group Web is filled, end dislocation adjustment is carried out, web is adjusted using web positioning mechanism, is allowed to be aligned and push up with bottom wing listrium center Tightly, it checks the verticality of web off-centring and bottom wing listrium and web, carries out positioning welding after qualified；The H profile steel Vertical group is specially that top flange plate is placed in the vertical machine horizontal rail of group, and adjustment positioning device is located in the vertical horizontal rail of group T-steel, is then assembled on top flange plate by centre, carries out end dislocation adjustment, adjusts T-steel abdomen using web positioning mechanism Plate is allowed to be aligned and hold out against with top flange plate center, check web center offset, top flange plate and web verticality and Sectional dimension carries out positioning welding after qualified.

6. steel structure processing technology according to claim 1, it is characterised in that in the production of steel column described in step (6) also Web and steel column including the bracket are the milling tight fillet weld of flat-top, and bracket wing plate and steel column are groove penetration weld；Steel column exists Reinforcing rib at bracket is groove penetration weld with column wing plate, is fillet weld with column web；When assembling bracket, bracket to steel column Fitted position allows plus tolerance 2mm；When bracket on steel column is crane beam support, the lower end planing of support stiffener is held out against, and is protected Demonstrate,prove the levelness and verticality of surface planing；Length is using disconnected milling end as positioning datum when bracket and connecting plate assemble, and level is in column The heart is positioning datum；All steel columns and steel column, end plate that steel column is docked with girder steel, double shear plate need first ball blast, it is ensured that friction system Welding, end plate and column are reassembled after number is qualified, beam connection is welded using groove.

7. steel structure processing technology according to claim 1, it is characterised in that the assembly of plus tolerance described in step (7) is wanted It asks are as follows: when L≤10 meter, when build-up tolerance is+1.5~+2, L >=10 meter, build-up tolerance is+3~+4.

8. steel structure processing technology according to claim 1, it is characterised in that the hole wall table of I pores described in step (9) Face is coarse≤and 12.5 μm；Hole wall surface roughness≤25 μm in the hole II；The aperture tolerance in the hole II are as follows: diameter+1.0~ 2.0mm, circularity 2.0mm, verticality 0.03t, and should not exceed 2.0mm.

9. steel structure processing technology according to claim 1, it is characterised in that pickling solution described in step (10) also adds There is fog inhibitor, the additive amount of the fog inhibitor is 0.1% ~ 1.5%, and the fog inhibitor includes the raw material of following parts by weight: non- Ionic surface active agent 4 ~ 10%, amine organic matter 8 ~ 15%, remaining is water.

10. hot dip galvanizing process according to claim 9, it is characterised in that the nonionic surfactant is octyl phenol Polyoxyethylene ether, nonylphenol polyoxyethylene ether, high-carbon fatty alcohol polyoxyethylene ether, polyoxyethylene carboxylate, fatty acid methyl ester One of ethoxylate, polyether nonionic surfactant, fatty acid loss water sorbit ester, sucrose fatty ester are more Kind；The amine organic matter is one of aniline, ethylenediamine, triethanolamine, acetamide, cyclohexylamine or a variety of.