CN103252590B - Butt welding method of column of steelmaking workshop - Google Patents

Butt welding method of column of steelmaking workshop Download PDF

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Publication number
CN103252590B
CN103252590B CN201310162282.0A CN201310162282A CN103252590B CN 103252590 B CN103252590 B CN 103252590B CN 201310162282 A CN201310162282 A CN 201310162282A CN 103252590 B CN103252590 B CN 103252590B
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welding
weld
welded
butt
seam
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CN103252590A (en
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房政
施光涛
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China MCC17 Group Co Ltd
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China MCC17 Group Co Ltd
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Abstract

The invention discloses a butt welding method of a column of a steelmaking workshop. The butt welding method of the column of the steelmaking workshop comprises the following steps that (1) end tabs are arranged, and weld preheating is carried out; (2) end tabs are arranged on two sides of each flange plate of a steel column before welding, rust removal and dirt removal are carried out on joints to be welded, preheating is carried out on base materials, and a preheating temperature is 100DEG C-150DEG C; (3) welding of components of the steel column is carried out according to the order of a welding process, and post-welding heat preservation is carried out. The butt welding method of the column of the steelmaking workshop has the advantages that welding joints are evenly heated, welding stress is small, the welding defects such as cracks, air holes, slag inclusion, and incomplete penetration are effectively overcome, time for butt welding installation of the column of the steelmaking workshop is shortened, use is safe and reliable, working efficiency is high, operability is good, and construction cost is reduced.

Description

Steel mill pillars of a house docking welding method
Technical field
The present invention relates to a kind of structure welding method, in particular, relate to a kind of large steel-making plant pillars of a house docking welding method.
Background technology
In Pre-tensioned Steel Structures, often run into the method that ultra-large type factory building columns mounting interface adopts docking, because factory building columns is designed to the real web lattice of cut deal, docking sectional dimension is large, steel column when installing docking welding, because of the impact of the factors such as welding procedure, welding sequence are improper, speed of welding, cause weld seam be heated inequality, welding stress excessive and crack, pore, slag inclusion, the weld defect such as lack of penetration, cause weld seam to do over again, have impact on the structure installment duration.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, and provide that a kind of welding procedure is proper, welding sequence is reasonable, easy to operate, reliable in quality, the reduction of erection time, the steel mill pillars of a house docking welding method that reduces costs.
In order to achieve the above object, this invention takes following technical scheme:
A kind of steel mill pillars of a house docking welding method, comprises the steps:
A, run-on tab, weld preheating are set:
Before welding, arrange run-on tab, eliminate rust to welded joint, remove contamination, then carry out preheating to mother metal in steel column flange plate both sides, preheat temperature is 100-150 DEG C;
B, steel column parts weld:
First the centre of weldering flange plate is weldingly fixed on web two ends and forms " work " font parts, more main web is weldingly fixed on the centre of each parts weldering web, adopt symmetrical welding centered by main web;
C, weld seam welding process:
The weld seam that the while of eight welders, welded flange plate is connected with weldering web; After a weld seam has welded, No. two weld seams while of four welders outside welded flange plate, another four welders weld No. three weld seams that web is connected with main web simultaneously; Four welders welded outside flange plate then complete the back chipping of No. two weld seams, and another four welders complete No. four weld seams of main web middle part; After two welder's completions on the upside of the main web middle part of welding, No. five weld seams then completed again, after welding two welder's completions on the downside of main web middle part, and then complete No. six weld seams again; After the both sides of main web have been welded, then complete the back chipping of all weld seams; The horizontal butt weld of whole pillar all completes; After butt weld welding, then complete the longitudinal seam of steel column joint separately, thus complete the docking welding job of whole steel column;
D, postweld heat preservation:
Weld complete after immediately butt welded seam be incubated, make it carry out Slow cooling, weld after 12 ~ 36 hours, butt welded seam carries out ultrasonic examination.
Adopt thickness to be the steel plate of 3-6mm during welded seam butt-joint clearance in described step C, preferably adopt thickness to be the steel plate of 4mm.Weld after 24 hours in described step D, butt welded seam carries out ultrasonic examination.
Beneficial effect of the present invention: (1) weld seam is heated evenly, welding stress is little, effectively prevent crackle, pore, slag inclusion, the weld defect such as lack of penetration, shortens the steel mill pillars of a house docking welding set-up time; (2) safe and reliable, operating efficiency is high; (3) workable, reduce construction cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of welding assembly of the present invention;
In figure: flange plate 1, run-on tab 2, web 3, main web 4, weld seam 5, No. two weld seams 6, No. three weld seams 7, No. four weld seams 8, No. six weld seams 9, No. five weld seams 10, weld gap plate 11, location-plates 12.
Detailed description of the invention
Below in conjunction with accompanying drawing, steel mill pillars of a house docking welding method of the present invention is described in further detail.
As shown in the figure: in steel mill pillars of a house docking welding method of the present invention, flange plate 1, run-on tab 2, web 3, main web 4, weld seam 5, No. two weld seams 6, No. three weld seams 7, No. four weld seams 8, No. six weld seams 9, No. five weld seams 10, weld gap plate 11, location-plates 12.
This steel mill pillars of a house docking welding method, comprises the steps:
A, run-on tab, weld preheating are set:
Before welding, steel column butt joint mouth is symmetrical arranged weld gap plate 11, weld gap plate 11 adopts the band steel of 30*4mm, lays symmetrically, and the width of flange plate 1 is 0.8m, main web 4 length is 3.3m, web 3 and flange plate 1 thickness are 60mm, arrange run-on tab 2, eliminate rust to welded joint, remove contamination in steel column flange plate 1 both sides, carry out preheating to mother metal again, preheat temperature is 100-150 DEG C;
B, steel column parts weld:
First the centre of weldering flange plate 1 is weldingly fixed on web 3 two ends and forms " work " font parts, more main web 4 is weldingly fixed on the centre of each parts weldering web 3, adopt symmetrical welding centered by main web 4;
C, weld seam welding process:
For reducing welding residual stress, adopt the processing step of small area analysis bottoming, backstep, multi-pass welding;
Inside eight welders divide four groups to be simultaneously symmetrically welded weld seam 5 that steel column main web 4 two ends " work " font flange plate 1 is connected with web 3; When being soldered to 2/3 inside a weld seam 5,1 welder often in group completes the welding of remaining inner side whole piece weld seam, and another 1 welder starts back chipping, welding outside a weld seam 5 until complete;
Four welders weld inside No. two weld seams 6 of steel column " work " font web 3 docking simultaneously; When being soldered to 2/3 inside No. two weld seams 6,1 welder often in group completes the welding of remaining inner side whole piece weld seam, and another 1 welder starts back chipping, welding outside No. two weld seams 6 until complete;
Four welders weld inside No. three weld seams 7 of little " work " font flange plate docking in the middle of steel column simultaneously; When being soldered to 2/3 inside No. three weld seams 7,1 welder often in group completes the welding of remaining inner side whole piece weld seam, another 1 welder starts to back chipping, welding outside No. three weld seams 7 until complete, then welds No. four weld seams 8 of little " work " font web docking until complete by two welders;
And then the welding that the upper and lower main web 4 of steel column docks No. five weld seams 9 is welded, because main web 4 length is longer, segmentation wandering sequence is adopted to carry out welding by four welders along the same side weld seam, when No. five weld seam 9 sides that upper and lower main web 4 docks are soldered to 1/3,2 welders complete the welding of remaining weld seam, and another 2 welders start to carry out back chipping, welding until complete to No. five weld seams 9; After butt weld welding, then complete the longitudinal seam of steel column joint separately, thus complete the docking welding job of whole steel column;
Adopt thickness to be the steel plate of 3-6mm during welded seam butt-joint clearance, preferably adopt thickness to be the steel plate of 4mm.
D, postweld heat preservation:
Weld complete after be incubated with rock cotton board butt welded seam immediately, make it carry out Slow cooling, weld after 24 hours, butt welded seam carries out ultrasonic examination.
The steel mill pillars of a house of the present invention docking welding method, weld seam is heated evenly, welding stress is little, and effectively prevent crackle, pore, slag inclusion, the weld defect such as lack of penetration, shorten the steel mill pillars of a house docking welding set-up time, safe and reliable, operating efficiency is high; Workable, reduce construction cost.

Claims (5)

1. a steel mill pillars of a house docking welding method, is characterized in that, comprise the steps:
A, run-on tab, weld preheating are set:
Before welding, arrange run-on tab (2), eliminate rust to welded joint, remove contamination, then carry out preheating to mother metal in steel column flange plate (1) both sides, preheat temperature is 100-150 DEG C;
B, steel column parts weld:
First the centre of welding flange plate (1) is weldingly fixed on web (3) two ends and forms " work " font parts, more main web (4) is weldingly fixed on the centre of each parts weldering web (3), adopt symmetrical welding centered by main web (4);
C, weld seam welding process:
The weld seam (5) that the while of eight welders, welded flange plate (1) is connected with weldering web (3); After a weld seam (5) has been welded, No. two weld seams (6) in welded flange plate (1) the outside while of four welders, another four welders weld No. three weld seams (7) that web (3) is connected with main web (4) simultaneously; Four welders that flange plate (1) outside has been welded then complete the back chipping of No. two weld seams (6), and another four welders complete No. four weld seams (8) of main web (4) middle part; After two welder's completions on the upside of welding main web (4) middle part, No. five weld seams (10) then completed again, after welding two welder's completions on the downside of main web (4) middle part, and then complete No. six weld seams (9) again; After the both sides of main web (4) have been welded, then complete the back chipping of all weld seams; The horizontal butt weld of whole pillar all completes; After butt weld welding, then complete the longitudinal seam of steel column joint separately, thus complete the docking welding job of whole steel column;
D, postweld heat preservation:
Weld complete after immediately butt welded seam be incubated, make it carry out Slow cooling, weld after 12 ~ 36 hours, butt welded seam carries out ultrasonic examination.
2. steel mill pillars of a house docking welding method according to claim 1, is characterized in that, adopt thickness to be the steel plate of 3-6mm in described step C during welded seam butt-joint clearance.
3. the steel mill pillars of a house according to claim 2 docking welding method, is characterized in that, preferably adopts thickness to be the steel plate of 4mm in described step C during welded seam butt-joint clearance.
4. steel mill pillars of a house docking welding method according to claim 1, it is characterized in that, weld after 24 hours in described step D, butt welded seam carries out ultrasonic examination.
5. steel mill pillars of a house docking welding method according to claim 1, is characterized in that, adopt rock cotton board butt welded seam to be incubated in described step D.
CN201310162282.0A 2013-05-06 2013-05-06 Butt welding method of column of steelmaking workshop Active CN103252590B (en)

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Application Number Priority Date Filing Date Title
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CN103252590B true CN103252590B (en) 2015-04-08

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104259622B (en) * 2014-07-31 2016-05-11 中国十七冶集团有限公司 Under wet environment, factory building columns butt welding connects method
CN112127477A (en) * 2020-10-30 2020-12-25 中国十七冶集团有限公司 Large-scale steel-making high-span solid-web type steel column and installation method thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS571599A (en) * 1980-06-04 1982-01-06 Mitsubishi Heavy Ind Ltd Assembling device of steel plate into h-shape
JPS58138573A (en) * 1982-02-13 1983-08-17 Nissan Motor Co Ltd Welding method of mast rail
JPH0687071A (en) * 1992-09-10 1994-03-29 Kawasaki Steel Corp Welding method for steel beam and steel column
CN101734557A (en) * 2009-11-18 2010-06-16 中冶天工建设有限公司 Process for manufacturing super-large I-shaped crane beam
JP4644750B1 (en) * 2010-04-23 2011-03-02 一 小金 Welding jig and welding method using the same
CN102091877A (en) * 2010-12-21 2011-06-15 中国建筑第八工程局有限公司 Construction method for butt welding irregular space box-type steel members
CN102126108A (en) * 2010-12-30 2011-07-20 山东杭萧钢构有限公司 Novel process for manufacturing lattice type steel column
CN102240863B (en) * 2011-07-13 2014-04-02 宝钢钢构有限公司 Method for welding box-shaped column

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