CN102465600B - Steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method - Google Patents
Steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method Download PDFInfo
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- CN102465600B CN102465600B CN201010547624.7A CN201010547624A CN102465600B CN 102465600 B CN102465600 B CN 102465600B CN 201010547624 A CN201010547624 A CN 201010547624A CN 102465600 B CN102465600 B CN 102465600B
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Abstract
A kind of steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method, it is characterized in that comprising the following steps: a, parts machining, b, setting-out, line, cutting and drilling, the rectification of c, component, d, steel column are assembled, e, welding for steel structure and f, steel structure coating.It is reasonable in design, simple to operate that steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method of the present invention has making step, the safe and reliable advantage with reducing engineering cost of workmanship.
Description
Technical field
The present invention relates to a kind of structure steel fabrication method, specifically, is a kind of steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method.
Background technology
The technique of benzol hydro refining unit is more special, its system complex, and equipment is many, and the pressure of system own, temperature are higher, and pump unit does not allow idle running.Benzene hydrogenation engineering be mainly divided into central control room and electric substation, refining plant, water supply and sewage work, air compression station, storage and handling facility (tank field and pump house), full factory powers and the illumination of full factory, torch and engineering ancillary facility, in the installation of these facilities, have lightning protection, fire prevention, explosion-proof particular/special requirement, wherein benzene hydrogenation engineering benzene hydrogenation main device structure steel fabrication is the important step in whole electrically (installation) system.Current domestic built or be still in the stage lack of standardization building benzene hydrogenation engineering benzene hydrogenation main device structure steel fabrication, there is a lot of not science, irrational place, manufacturing process is numerous and diverse, manufacturing cost is high.
Therefore known steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering makes and there is above-mentioned all inconvenience and problem.
Summary of the invention
Object of the present invention, is to propose a kind of best in quality, safe and reliable steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method.
For achieving the above object, technical solution of the present invention is:
A kind of steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method, is characterized in that comprising the following steps:
A, parts machining, threedimensional model and other computer software are utilized to carry out the accurate setting-out of size, the abundant specification according to welding method, welding sequence, welding point form and part, size carry out rational margin reserves, batching should follow first main part, rear attachment, order from big to small carries out discharge, abundant Appropriate application material, according to span, the deadweight requirement of construction drawing and beam, the web of beam arranges pre-arch camber, camber line arch camber is taked in pre-arch camber, to ensure the acceptance requirement of final beam camber;
B, setting-out, line, cutting and drilling, number material pronucleus to steel specs, material, and check surface quality of steel, as found, steel are uneven, there is corrosion, the dirts such as paint, to correct after cleaning again number material, number material will leave cutting surplus, by clean for the dirt removal on steel cutting area surface before cutting, slag and splash is removed after cutting, it is steady that pad set level by steel plate, space is left below slot, multi-head straight machine cutting in the blanking of vertical bar plate, numerical control cutting machine in arc plate blanking, diaphragm and endoporus thereof adopt NC flame cutting, to ensure cutting accuracy, breach is prevented during cutting, the part edge of main bearing member does not allow jagged, the part edge breach of general component is not more than 2mm, excessive defect carries out repair welding and polishes smooth, otherwise inaccurate inflow next procedure, steel column and beam connecting hole and crane girder and automatic plate connecting hole are by Three-dimensional numerical control driller drilling, crane girder end plate be connected plate hole by numerical control plane drill press drilling, the bolt hole made is right cylindrical, and perpendicular to the steel surface of position, gradient is less than 1/20, and its hole periphery impulse-free robustness, breaks, horn mouth or concavo-convex vestige, chip is removed clean, the degree digital control of splicing groove built in setting ± 5 ° within the scope of,
The rectification of c, component, adopts machinery rectification and gagging and flame straightening and heat straightening to the part sheared or distortion after gas flame cuttiug, bending part and the flexural deformation of front road can affect next procedure quality, machinery clears up the attachments such as the slag of steel surface before correcting, the anti-mouth equating of shearing, prevent from being absorbed in steel when machinery overstocks, form pockmark, structural carbon steel and low-alloy structural steel are when heat straightening, heating-up temperature is no more than 900 DEG C, low-alloy structural steel naturally cools after adding heat straightening, before being down to room temperature, must not hammering steel material and water quenching, cold strong time slowly afterburning, room temperature should not lower than-5 DEG C, the pulling force rod member that when cold strong total deformation rate must not be greater than 2%, impact value does not meet the demands must not coldly be rectified, steel surface after rectification does not have obvious indenture or damage, scratch depth is not more than 0.5mm, and be not more than that steel plate thickness bears allowable variation 1/2,
D, steel column is assembled, steel column is assembled on the steel mould base of lining, post bottom surface is to the distance reserved welding allowance for shrinkage of platform bracket supporting surface, the datum of steel column assembling supports upper plane with shaft axis peace dummy cow leg and is as the criterion, bearing diagonal is as the criterion with meld line, reinforcement measure is carried out before welding when steel column platform bracket is longer, prevent welding deformation, when bracket welds with steel column, top flange weld seam belongs to tensile region, weld seam through welding, and do ultrasonic testing/ ultrasonic examination, joint face is straight, edges of boards, limit, hole impulse-free robustness is to ensure rubbing surface closing contact, rubbing surface must not have iron oxide, paint, greasy dirt and earth,
E, welding for steel structure, wherein:
Manual electric arc welding welding technological parameter:
Welding technique of submerged arc welding parameter:
Ar-CO
2gas shielded arc welding welding condition:
F, steel structure coating, steel column, crane girder, the application of roof girder steel construction piece, wherein: steel work priming paint uses aqueous inorganic spelter coating, application twice, its build 100 μm; Transition zone paint uses epoxy to connect paint, build 25 μm; Intermediate coat uses coating in epoxy micaceous iron, build 30 μm; Finish paint uses can overcoating polyurethane finish, application twice, its build 30 μm; Application adopts airless spraying; The precoating of edge and sectional repair can adopt spread coating and roll coating process; All components are equal spray-applied primer before dispatching from the factory, and must not be greater than 3 hours to the basecoat paint time interval after derusting by sandblasting completes.
Steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method of the present invention can also be further achieved by the following technical measures.
Aforesaid method, during the joint face of wherein said steps d steel column assembling is straight, selects close face height, in order to avoid control misalignment during the post beam docking of the steel platform made by rolled section steel.
Aforesaid method, during the joint face of wherein said steps d steel column assembling is straight, the cover plate of steel platform smooths to eliminate stress before assembling on levelling machine, reduces the stress after welding and concentrates and causes distortion.
Aforesaid method, during the joint face of wherein said steps d steel column assembling is straight, to steel platform surface part plan degree finished product timing, the form put with roasting plum blossom carries out flame correction.
After adopting technique scheme, steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method of the present invention has the following advantages:
1, making step is reasonable in design, simple to operate;
2, workmanship is safe and reliable;
3, engineering cost is reduced.
Detailed description of the invention
The present invention is further illustrated below by way of specific embodiment.
Embodiment 1
Steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method of the present invention, is characterized in that comprising the following steps:
A, parts machining, threedimensional model and other computer software are utilized to carry out the accurate setting-out of size, the abundant specification according to welding method, welding sequence, welding point form and part, size carry out rational margin reserves, batching should follow first main part, rear attachment, order from big to small carries out discharge, abundant Appropriate application material, according to span, the deadweight requirement of construction drawing and beam, the web of beam arranges pre-arch camber, camber line arch camber is taked in pre-arch camber, to ensure the acceptance requirement of final beam camber;
B, setting-out, line, cutting and drilling, number material pronucleus to steel specs, material, and check surface quality of steel, as found, steel are uneven, there is corrosion, the dirts such as paint, to correct after cleaning again number material, number material will leave cutting surplus, by clean for the dirt removal on steel cutting area surface before cutting, slag and splash is removed after cutting, it is steady that pad set level by steel plate, space is left below slot, multi-head straight machine cutting in the blanking of vertical bar plate, numerical control cutting machine in arc plate blanking, diaphragm and endoporus thereof adopt NC flame cutting, to ensure cutting accuracy, breach is prevented during cutting, the part edge of main bearing member does not allow jagged, the part edge breach of general component is not more than 2mm, excessive defect carries out repair welding and polishes smooth, otherwise inaccurate inflow next procedure, steel column and beam connecting hole and crane girder and automatic plate connecting hole are by Three-dimensional numerical control driller drilling, crane girder end plate be connected plate hole by numerical control plane drill press drilling, the bolt hole made is right cylindrical, and perpendicular to the steel surface of position, gradient is less than 1/20, and its hole periphery impulse-free robustness, breaks, horn mouth or concavo-convex vestige, chip is removed clean, the degree digital control of splicing groove built in setting ± 5 ° within the scope of,
The rectification of c, component, adopts machinery rectification and gagging and flame straightening and heat straightening to the part sheared or distortion after gas flame cuttiug, bending part and the flexural deformation of front road can affect next procedure quality, machinery clears up the attachments such as the slag of steel surface before correcting, the anti-mouth equating of shearing, prevent from being absorbed in steel when machinery overstocks, form pockmark, structural carbon steel and low-alloy structural steel are when heat straightening, heating-up temperature is no more than 900 DEG C, low-alloy structural steel naturally cools after adding heat straightening, before being down to room temperature, must not hammering steel material and water quenching, cold strong time slowly afterburning, room temperature should not lower than-5 DEG C, the pulling force rod member that when cold strong total deformation rate must not be greater than 2%, impact value does not meet the demands must not coldly be rectified, steel surface after rectification does not have obvious indenture or damage, scratch depth is not more than 0.5mm, and be not more than that steel plate thickness bears allowable variation 1/2,
D, steel column is assembled, steel column is assembled on the steel mould base of lining, post bottom surface is to the distance reserved welding allowance for shrinkage of platform bracket supporting surface, the datum of steel column assembling supports upper plane with shaft axis peace dummy cow leg and is as the criterion, bearing diagonal is as the criterion with meld line, reinforcement measure is carried out before welding when steel column platform bracket is longer, prevent welding deformation, when bracket welds with steel column, top flange weld seam belongs to tensile region, weld seam through welding, and do ultrasonic testing/ ultrasonic examination, joint face is straight, edges of boards, limit, hole impulse-free robustness is to ensure rubbing surface closing contact, rubbing surface must not have iron oxide, paint, greasy dirt and earth, the post beam of described steel platform is rolled section steel, and the face height of rolled section steel often has positive and negative deviation, will select close face height during its docking, in order to avoid control misalignment, the cover plate of steel platform smooths to eliminate stress before assembling on levelling machine, and the stress after minimizing welding is concentrated and caused distortion, to steel platform surface part plan degree finished product timing, the form put with roasting plum blossom carries out flame correction.
E, welding for steel structure, wherein:
Manual electric arc welding welding technological parameter is in table 1;
Table 1 manual electric arc welding welding technological parameter
Welding technique of submerged arc welding parameter is in table 2;
Table 2 welding technique of submerged arc welding parameter
Ar-CO
2gas shielded arc welding welding condition is in table 3;
Table 3Ar-CO
2gas shielded arc welding welding condition
F, steel structure coating, steel column, crane girder, the application of roof girder steel construction piece, wherein: steel work priming paint uses aqueous inorganic spelter coating, application twice, its build 100 μm; Transition zone paint uses epoxy to connect paint, build 25 μm; Intermediate coat uses coating in epoxy micaceous iron, build 30 μm; Finish paint uses can overcoating polyurethane finish, application twice, its build 30 μm; Application adopts airless spraying; The precoating of edge and sectional repair can adopt spread coating and roll coating process; All components are equal spray-applied primer before dispatching from the factory, and must not be greater than 3 hours to the basecoat paint time interval after derusting by sandblasting completes.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or change.Therefore, all equivalent technical schemes also should belong to category of the present invention, should be limited by each claim.
Claims (4)
1. a steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method, is characterized in that comprising the following steps:
A, threedimensional model and other computer software are utilized to carry out the accurate setting-out of size, the abundant specification according to welding method, welding sequence, welding point form and part, size carry out rational margin reserves, and batching should follow first main part, rear attachment, order from big to small carries out discharge, abundant Appropriate application material, according to span, the deadweight requirement of construction drawing and beam, the web of beam arranges pre-arch camber, camber line arch camber is taked in pre-arch camber, to ensure the acceptance requirement of final beam camber;
B, setting-out, line, cutting and drilling, number material pronucleus to steel specs, material, and check surface quality of steel, as found, steel are uneven, there is dirt, to correct after cleaning again number material, number material will leave cutting surplus, by clean for the dirt removal on steel cutting area surface before cutting, slag and splash is removed after cutting, it is steady that pad set level by steel plate, space is left below slot, multi-head straight machine cutting in the blanking of vertical bar plate, numerical control cutting machine in arc plate blanking, diaphragm and endoporus thereof adopt NC flame cutting, to ensure cutting accuracy, breach is prevented during cutting, the part edge of main bearing member does not allow jagged, the part edge breach of general component is not more than 2mm, excessive defect carries out repair welding and polishes smooth, otherwise inaccurate inflow next procedure, steel column and beam connecting hole and crane girder and automatic plate connecting hole are by Three-dimensional numerical control driller drilling, crane girder end plate be connected plate hole by numerical control plane drill press drilling, the bolt hole made is right cylindrical, and perpendicular to the steel surface of position, gradient is less than 1/20, and its hole periphery impulse-free robustness, breaks, horn mouth or concavo-convex vestige, chip is removed clean, the degree digital control of splicing groove built in setting ± 5 ° within the scope of,
The rectification of c, component, adopts machinery rectification and gagging and flame straightening and heat straightening to the part sheared or distortion after gas flame cuttiug, bending part and the flexural deformation of front road can affect next procedure quality, the attachment of steel surface cleared up by machinery before correcting, the anti-mouth equating of shearing, prevent from being absorbed in steel when machinery overstocks, form pockmark, structural carbon steel and low-alloy structural steel are when heat straightening, heating-up temperature is no more than 900 DEG C, low-alloy structural steel naturally cools after adding heat straightening, before being down to room temperature, must not hammering steel material and water quenching, cold strong time slowly afterburning, room temperature should not lower than-5 DEG C, the pulling force rod member that when cold strong total deformation rate must not be greater than 2%, impact value does not meet the demands must not coldly be rectified, steel surface after rectification does not have obvious indenture or damage, scratch depth is not more than 0.5mm, and be not more than that steel plate thickness bears allowable variation 1/2,
D, steel column is assembled, steel column is assembled on the steel mould base of lining, post bottom surface is to the distance reserved welding allowance for shrinkage of platform bracket supporting surface, the datum of steel column assembling supports upper plane with shaft axis peace dummy cow leg and is as the criterion, bearing diagonal is as the criterion with meld line, reinforcement measure is carried out before welding when steel column platform bracket is longer, prevent welding deformation, when bracket welds with steel column, top flange weld seam belongs to tensile region, weld seam through welding, and do ultrasonic testing/ ultrasonic examination, joint face is straight, edges of boards, limit, hole impulse-free robustness is to ensure rubbing surface closing contact, rubbing surface must not have iron oxide, paint, greasy dirt and earth,
E, welding for steel structure, wherein: manual electric arc welding welding technological parameter:
Welding technique of submerged arc welding parameter:
Ar-CO
2gas shielded arc welding welding condition:
F, steel structure coating, steel column, crane girder, the application of roof girder steel construction piece, wherein: steel work priming paint uses aqueous inorganic spelter coating, application twice, its build 100 μm; Transition zone paint uses epoxy to connect paint, build 25 μm; Intermediate coat uses coating in epoxy micaceous iron, build 30 μm; Finish paint uses can overcoating polyurethane finish, application twice, its build 30 μm; Application adopts airless spraying; The precoating of edge and sectional repair can adopt spread coating and roll coating process; All components are equal spray-applied primer before dispatching from the factory, and must not be greater than 3 hours to the basecoat paint time interval after derusting by sandblasting completes.
2. steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method as claimed in claim 1, it is characterized in that, during the joint face of described steps d steel column assembling is straight, during the post beam docking of the steel platform made by rolled section steel, select close face height, in order to avoid control misalignment.
3. steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method as claimed in claim 1, it is characterized in that, during the joint face of described steps d steel column assembling is straight, the cover plate of steel platform smooths to eliminate stress before assembling on levelling machine, reduces the stress after welding and concentrates and causes distortion.
4. steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method as claimed in claim 1, it is characterized in that, during the joint face of described steps d steel column assembling is straight, to steel platform surface part plan degree finished product timing, the form put with roasting plum blossom carries out flame correction.
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| CN103567709A (en) * | 2012-07-25 | 2014-02-12 | 昆山荣科钣金科技有限公司 | High-precision testing device frame manufacturing process |
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| CN106475700A (en) * | 2016-12-23 | 2017-03-08 | 中国二冶集团有限公司 | A kind of manufacture method of fusiformis roof girder |
| CN108930366A (en) * | 2017-05-27 | 2018-12-04 | 北京智慧云建科技有限公司 | A kind of steel reinforced concrete abnormity overlapping sheet-pile production technology |
| CN108930362A (en) * | 2017-05-27 | 2018-12-04 | 北京智慧云建科技有限公司 | A kind of steel reinforced concrete abnormity sheet-pile production technology |
| CN109079438A (en) * | 2018-08-17 | 2018-12-25 | 云南宏盛铁塔实业有限公司 | A kind of steel structure processing technology |
| CN109822303A (en) * | 2019-01-17 | 2019-05-31 | 宁波晨旭建筑科技有限公司 | A kind of PC mold technological process of production |
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