CN106270952A - A kind of welding method of building structural steel Q345GJB - Google Patents
A kind of welding method of building structural steel Q345GJB Download PDFInfo
- Publication number
- CN106270952A CN106270952A CN201610763646.4A CN201610763646A CN106270952A CN 106270952 A CN106270952 A CN 106270952A CN 201610763646 A CN201610763646 A CN 201610763646A CN 106270952 A CN106270952 A CN 106270952A
- Authority
- CN
- China
- Prior art keywords
- welding
- weld
- root
- q345gjb
- butt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/18—Submerged-arc welding
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The present invention relates to the welding method of a kind of building structural steel Q345GJB, welding point form uses butt-weld in the downhand position, docking horizontal position welding, angle butt-weld in the downhand position, T-shaped corner connection horizontal position welding, the non-penetration downhand welding of T-shaped corner connection ship type, and welding method uses Lincoln weld, CO2Gas shielded arc welding；Do not preheat before weldering, use multi-pass welding welding, interlayer temperature 150～200 DEG C.The invention have the advantage that the composition range for Q345GJB and technical conditions, solve welding method and the technological problems of this kind of steel, specifically include: 1) by joint form, thickness of slab, rational groove type and welding method are proposed, 2) for joint form, groove type and the welding method suitable welding material of selection, 3) corresponding suitably welding condition is proposed.Carrying out Q345GJB steel welding by technique scheme, welding point obtains the mechanical property equal with mother metal, meets engineering and uses requirement.
Description
Technical field
The invention belongs to building structural steel welding technology field, particularly relate to a kind of building structural steel Q345GJB's
Welding method.
Background technology
Building structural steel has the performance such as antidetonation, low-temperature impact resistance, improves it and manufactures reliability.Building structural steel
Use, building structure can be made to develop to the direction of high stratification and large span.Such as skyscraper, large span stadiums, airport
Deng large-scale construction engineering.
Q345GJB and general carbon steel, the Main Differences of low-alloy steel are to define yield tensile ratio, yield strength fluctuation model
Enclose, it is stipulated that carbon equivalent and welding crack sensibility index, reduce P, S content.But Ni content is high, Ni easily with many element shapes
Becoming low melting eutectics, therefore be prone to crack, welding difficulty increases, and does not up to the present have welding method and the technique of molding.
In sum, need Q345GJB is carried out soldering test, determine rational welding method and technique so that weldering
Joint obtains the mechanical property equal with mother metal, meets engineering and uses requirement.
Summary of the invention
For overcoming the deficiencies in the prior art, it is an object of the invention to provide the welding of a kind of building structural steel Q345GJB
Method, joint mechanical property is excellent, is applied to the welding of the structural steel Q345GJB of 3-50mm, it is ensured that welding quality.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of welding method of building structural steel Q345GJB, welding point form use butt-weld in the downhand position, docking horizontal position welding,
Angle butt-weld in the downhand position, T-shaped corner connection horizontal position welding, the non-penetration downhand welding of T-shaped corner connection ship type, welding method uses Lincoln weld, CO2Gas is protected
Protect weldering；Do not preheat before weldering, use multi-pass welding welding, interlayer temperature 150～200 DEG C.
When butt-weld in the downhand position uses Lincoln weld welding, select V-arrangement or double V groove；V-butt 60 °, root face 4mm, root
Gap 2mm；Double V groove, 55 ° of front, reverse side 60 °, root face 4mm, gap 2mm, the clear root of weld of reverse side welds；Welding current 520～
550A, voltage 28～32V, speed of welding 34～37cm/min, heat input 21.3～25.5kJ/cm；
Butt-weld in the downhand position uses CO2During gas shielded arc welding welding, select V-arrangement or double V groove；V-butt 60 °, root face 0～
2mm, root gap 2mm；Double V groove, 55 ° of front, reverse side 60 °, root face 0～2mm, gap 2mm, the clear root of weld of reverse side welds；Weldering
Connect electric current 240～320A, voltage 26～30V, speed of welding 26～38cm/min, heat input 9.4～15.5kJ/cm.
Docking horizontal position welding uses CO2During gas shielded arc welding welding, select monolateral V-arrangement or K shape groove；Shape groove 45 °, root face
2mm, root gap 2mm；K shape groove, 50 ° of front, reverse side 50 °, root face 2mm, gap 2mm, the clear root of weld of reverse side welds；Welding electricity
Stream 260～300A, voltage 26～30V, speed of welding 24～38cm/min, heat input 8.5～14.7kJ/cm.
When angle butt-weld in the downhand position uses Lincoln weld welding, select V-butt 50 °, root face 2mm, root gap 10mm, the back of the body
Face lined steel liner；Welding current 530～555A, voltage 32～34V, speed of welding 32～37cm/min, heat input 22.7～
28.8kJ/cm；
Angle butt-weld in the downhand position uses CO2During gas shielded arc welding welding, select V-butt 50 °, root face 2mm, root gap
10mm, back side lined steel liner；Welding current 240～280A, voltage 28～30V, speed of welding 30～36cm/min, heat input
9.1～12.6kJ/cm.
T-shaped corner connection horizontal position welding uses CO2During gas shielded arc welding welding, selecting single bevel groove 45 °, root face 2mm, between root
Gap 6mm；Back side lined steel liner；Welding current 260～300A, voltage 26～30V, speed of welding 24～38cm/min, heat input
8.9～14.7kJ/cm.
When the non-penetration downhand welding of T-shaped corner connection ship type uses gantry submerged arc welding, open K shape groove 45 °, root face 8mm, gap 0
～1mm；Welding current 620～650A, voltage 27～33V, speed of welding 32～36cm/min, heat input 23.9～32.3kJ/
cm；Gantry submerged-arc welding uses welding wire H10Mn2, φ 5.0mm, solder flux uses SJ101, through 300～350 DEG C of bakings before solder flux welding,
Time 2 h.
The welding wire that described submerged-arc welding automatic welding uses: H10Mn2, φ 4.0mm, solder flux uses SJ101；Before solder flux welding
Through 300～350 DEG C of bakings, time 2 h.
Described CO2Gas shielded arc welding employing solid core welding wire: ER50-6, φ 1.2mm.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention is directed to composition range and the technical conditions of Q345GJB, the welding method and the technique that solve this kind of steel are asked
Topic, specifically includes: 1) by joint form, thickness of slab, rational groove type and welding method proposed, 2) for joint form, slope
Degree of lip-rounding formula and the welding method suitable welding material of selection, 3) corresponding suitably welding condition is proposed.Use above-mentioned technical side
Case carries out Q345GJB steel welding, and welding point obtains the mechanical property equal with mother metal, meets engineering and uses requirement.
Accompanying drawing explanation
Fig. 1 is joint and the groove type schematic diagram of first and second embodiment.
Fig. 2 is that the welding bead of first embodiment arranges schematic diagram.
Fig. 3 is that the welding bead of the second embodiment arranges schematic diagram.
Fig. 4 is joint and the groove type schematic diagram of the 3rd embodiment.
Fig. 5 is that the welding bead of the 3rd embodiment arranges schematic diagram.
Fig. 6 is joint and the groove type schematic diagram of fourth, fifth embodiment.
Fig. 7 is that the welding bead of the 4th embodiment arranges schematic diagram.
Fig. 8 is that the welding bead of the 5th embodiment arranges schematic diagram.
Fig. 9 is joint and the groove type schematic diagram of sixth embodiment.
Figure 10 is that the welding bead of sixth embodiment arranges schematic diagram.
Figure 11 is joint and the groove type schematic diagram of the 7th embodiment.
Figure 12 is that the welding bead of the 7th embodiment arranges schematic diagram.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is described in detail, it should be noted that the enforcement of the present invention does not limits
In following embodiment.
The chemical composition of building structural steel Q345GJB is shown in Table 1, and mechanical property is shown in Table 2.
Table 1 Q345GJB building structural steel chemical composition (%)
Table 2 Q345GJB building structural steel mechanical property
The welding method of building structural steel Q345GJB:
1 welding point form uses butt-weld in the downhand position, docking horizontal position welding, angle butt-weld in the downhand position, T-shaped corner connection horizontal position welding, T-shaped corner connection ship type
Non-penetration downhand welding.
2 welding methods use Lincoln weld, CO2Gas shielded arc welding.
Do not preheat before 3 welderings.
4 use multi-pass welding welding, interlayer temperature 150～200 DEG C.
5 butt-welds in the downhand position: select V-arrangement or double V groove according to thickness of slab.V-butt 60 °, root face 4mm, root gap 2mm；X-shaped
Groove, 55 ° of front, reverse side 60 °, root face 4mm, gap 2mm, the clear root of weld of reverse side welds；Employing Lincoln weld is welded.
6 butt-welds in the downhand position: select V-arrangement or double V groove according to thickness of slab.V-butt 60 °, root face 0～2mm, root gap 2mm；
Double V groove, 55 ° of front, reverse side 60 °, root face 0～2mm, gap 2mm, the clear root of weld of reverse side welds；Use CO2Gas shielded arc welding welds
Connect.
7 docking horizontal position welding: select monolateral V-arrangement or K shape groove according to thickness of slab.Single bevel groove 45 °, root face 2mm, between root
Gap 2mm；K shape groove, 50 ° of front, reverse side 50 °, root face 2mm, gap 2mm, the clear root of weld of reverse side welds；Use CO2Gas shield
Weldering welding.
8 jiaos of butt-welds in the downhand position select V-butt 50 °, root face 2mm, root gap 10mm, back side lined steel liner；Use submerged arc
Automatic welding welds.
9 jiaos of butt-welds in the downhand position select V-butt 50 °, root face 2mm, root gap 10mm, back side lined steel liner；Use CO2Gas
Body protection weldering welding.
10T type corner connection horizontal position welding selects single bevel groove 45 °, root face 2mm, root gap 6mm；Back side lined steel liner；Use
CO2Gas shielded arc welding welds.
11T type corner connection ship type non-penetration downhand welding, opens K shape groove 45 °, root face 8mm, gap 0～1mm, uses gantry submerged arc
Welding.
The present invention carries out welding as embodiment according to the joint form that steel construction is conventional, specific as follows:
1 first embodiment is the butt-weld in the downhand position of thickness of slab 25+25, uses Lincoln weld welding, and two board sizes are 25*
300*610, concrete joint and groove type schematic diagram, welding bead arrange schematic diagram the most as depicted in figs. 1 and 2.
2 second embodiments are the butt-weld in the downhand position of thickness of slab 25+25, use real core CO2Gas shielded arc welding welds, and two board sizes are equal
Schematic diagram is arranged the most as shown in figures 1 and 3 for 25*300*610, concrete joint and groove type schematic diagram, welding bead.
3 the 3rd embodiments are the docking horizontal position welding of thickness of slab 25+25, use real core CO2Gas shielded arc welding welds, and two board sizes are equal
Schematic diagram is arranged the most as shown in Figure 4 and Figure 5 for 25*300*610, concrete joint and groove type schematic diagram, welding bead.
4 the 4th embodiments are the angle butt-weld in the downhand position of thickness of slab 25+25, use Lincoln weld welding, and two board sizes are 25*
250*400, concrete joint and groove type schematic diagram, welding bead arrange schematic diagram the most as shown in Figure 6 and Figure 7.
5 the 5th embodiments are the angle butt-weld in the downhand position of thickness of slab 25+25, use real core CO2Gas shielded arc welding welds, two board sizes
It is 25*250*400, concrete joint and groove type schematic diagram, welding bead and arranges schematic diagram the most as shown in Figure 6 and Figure 8.
6 sixth embodiment are the T-shaped corner connection horizontal position welding of thickness of slab 25+25, use real core CO2Gas shielded arc welding welds, two board foots
The very little 25*250*400 that is, concrete joint and groove type schematic diagram, welding bead arrange schematic diagram the most as shown in Figure 9 and Figure 10.
7 the 7th embodiments are the T-shaped corner connection ship type non-penetration downhand welding of thickness of slab 25+25, use gantry Lincoln weld welding,
Two board sizes are 25*250*400, concrete joint and groove type schematic diagram, welding bead and arrange that schematic diagram is respectively such as Figure 11 and Tu
Shown in 12.
For above-mentioned joint form and welding method, carry out welding by the solder technology scheme of the present invention.Its center tap shape
Formula, groove type, welding bead are arranged and order is shown in Fig. 1～Figure 12 respectively.The welding method of employing, welding condition, including line
Between energy, road, temperature, welding current, arc voltage and speed of welding etc. are all listed in table 3.
Table 3
The welding material that the present invention relates to includes: submerged-arc welding automatic welding welding wire: H10Mn2, φ 4.0mm, gantry submerged-arc welding is welded
Silk H10Mn2, φ 5.0mm, solder flux SJ101, CO2Gas shielded arc welding employing solid core welding wire: ER50-6, φ 1.2mm.The welding related to
Equipment: automatic submerged arc welding device model ZD5-1600, CO2Gas shielded arc welding unit type YD-500KR, polarity is DC reverse connection.
Welding condition is through 300～350 DEG C of bakings, time 2 h before solder flux uses.Welding ambient temperature is 13～25
DEG C, ambient humidity 25～51%.Butt-weld in the downhand position, the clear root of weld of horizontal position welding weld root.
Implementation result of the present invention is as follows:
Weld appearance is checked:
1) with not less than 5 times of lens examination surface of test piece, there is no crackle, incompletely filling, incomplete fusion, overlap, pore slag inclusion
Deng excessive defect.
2) weld seam is without undercut.Meet the requirement of GB50611.
Weld seam Non-Destructive Testing: carry out after the assay was approved in outward appearance, uses ultrasonic examination, weldquality conformance with standard " steel
Weld seam manual ultrasonic method of detection and result of detection classification " B II grade that specifies of GB11345.
Sample is processed:
1) tensile sample is processed by " welding point stretching test method " GB/T2651 regulation.
2) bend specimen is processed by " welding point bend test method " GB/T2653 regulation.
3) impact specimen is processed by " welding point impact test method " GB/T2650 regulation.
4) macroscopic view acid etching sample processing, every piece of sample should take a face and test.
Test check:
1) tension test is carried out by " welding point stretching test method " GB/T2651 regulation.
2) bend test is carried out by " welding point bend test method " GB/T2653 regulation, and Bend diameter is that (δ is curved to 4 δ
Bent sample thickness), angle of bend is 180 °, sample thickness 10mm, and width is 25mm.
3) impact test is carried out by " welding point impact test method " GB/T2650 regulation.
4) macroscopic view pickle test should meet existing national standards " macrostructure of steel and defect acid etching method of inspection " GB226's
Pertinent regulations.
Test data analyzer: in table 3,1) to be found out by stretch test result, fracture site, all on mother metal, illustrates that weld seam is strong
Degree is above mother metal standard value, and weld strength is qualified, yield tensile ratio≤0.83.2) side bend test result is the most intact, flawless, weld seam
The plasticity of joint is good.3) impact value of joint far above these steel technical conditions regulation >=34AKV/J requirement, have excellent
Toughness and tenacity.The welding joint mechanical property using technical solution of the present invention welding fully meets " steel plate for building structure " (GB/
T19879-2005) mechanical property requirements, welding method and technological parameter can be as establishment Q345GJB welding procedure specification (WPS)s
Foundation.
Can be with cladding thickness scope with the suitability about solder technology scheme and its representativeness of corresponding assay: gas
Protection weldering is 3～50mm；Lincoln weld is 8～50mm.As can be seen here, welding method and the technique of the present invention is more fully covered
Cover joint form and the thickness specification of Q345GJB, and implementation result has all met the technical conditions of existing relevant criterion, Ke Yishi
Border applies to the engineering welding of Q345GJB building structural steel.
Utilize the building structural steel Q345GJB after the inventive method welding, weld seam do not have crackle, incompletely filling, incomplete fusion,
The excessive defects such as overlap, pore slag inclusion；Weld seam is without undercut.Meet the requirement of GB50611.Use ultrasonic examination, weldquality
Meet B II grade.The result carrying out tension test is found out, fracture site, all on mother metal, illustrates that weld strength is above mother metal mark
Quasi-value, weld strength is qualified, yield tensile ratio≤0.83.The welding joint mechanical property using technical solution of the present invention welding is the fullest
The mechanical property requirements of foot steel plate for building structure, welding method and technological parameter can be as establishment Q345GJB welding procedures
The foundation of code.Can be with cladding thickness scope with the suitability about solder technology scheme and its representativeness of corresponding assay:
Gas shielded arc welding is 3～50mm；Lincoln weld is 8～50mm.As can be seen here, welding method and the technique of the present invention are more comprehensive
Cover joint form and the thickness specification of Q345GJB, and implementation result all meets the technical conditions of existing relevant criterion, can
With practice in the engineering welding of Q345GJB building structural steel.
Claims (8)
1. the welding method of a building structural steel Q345GJB, it is characterised in that the employing butt-weld in the downhand position of welding point form,
Docking horizontal position welding, angle butt-weld in the downhand position, T-shaped corner connection horizontal position welding, the non-penetration downhand welding of T-shaped corner connection ship type, welding method employing Lincoln weld,
CO2Gas shielded arc welding；Do not preheat before weldering, use multi-pass welding welding, interlayer temperature 150～200 DEG C.
The welding method of a kind of building structural steel Q345GJB the most according to claim 1, it is characterised in that
When butt-weld in the downhand position uses Lincoln weld welding, select V-arrangement or double V groove；V-butt 60 °, root face 4mm, root gap
2mm；Double V groove, 55 ° of front, reverse side 60 °, root face 4mm, gap 2mm, the clear root of weld of reverse side welds；Welding current 520～550A,
Voltage 28～32V, speed of welding 34～37cm/min, heat input 21.3～25.5kJ/cm；
Butt-weld in the downhand position uses CO2During gas shielded arc welding welding, select V-arrangement or double V groove；V-butt 60 °, root face 0～2mm, root
Gap, portion 2mm；Double V groove, 55 ° of front, reverse side 60 °, root face 0～2mm, gap 2mm, the clear root of weld of reverse side welds；Welding current
240～320A, voltage 26～30V, speed of welding 26～38cm/min, heat input 9.4～15.5kJ/cm.
The welding method of a kind of building structural steel Q345GJB the most according to claim 1, it is characterised in that
Docking horizontal position welding uses CO2During gas shielded arc welding welding, select monolateral V-arrangement or K shape groove；Shape groove 45 °, root face 2mm, root
Gap, portion 2mm；K shape groove, 50 ° of front, reverse side 50 °, root face 2mm, gap 2mm, the clear root of weld of reverse side welds；Welding current 260
～300A, voltage 26～30V, speed of welding 24～38cm/min, heat input 8.5～14.7kJ/cm.
The welding method of a kind of building structural steel Q345GJB the most according to claim 1, it is characterised in that
When angle butt-weld in the downhand position uses Lincoln weld welding, selecting V-butt 50 °, root face 2mm, root gap 10mm, the back side serves as a contrast
Steel sleeve；Welding current 530～555A, voltage 32～34V, speed of welding 32～37cm/min, heat input 22.7～28.8kJ/
cm；
Angle butt-weld in the downhand position uses CO2During gas shielded arc welding welding, select V-butt 50 °, root face 2mm, root gap 10mm, the back side
Lined steel liner；Welding current 240～280A, voltage 28～30V, speed of welding 30～36cm/min, heat input 9.1～
12.6kJ/cm。
The welding method of a kind of building structural steel Q345GJB the most according to claim 1, it is characterised in that
T-shaped corner connection horizontal position welding uses CO2During gas shielded arc welding welding, select single bevel groove 45 °, root face 2mm, root gap 6mm；
Back side lined steel liner；Welding current 260～300A, voltage 26～30V, speed of welding 24～38cm/min, heat input 8.9～
14.7kJ/cm。
The welding method of a kind of building structural steel Q345GJB the most according to claim 1, it is characterised in that
When the non-penetration downhand welding of T-shaped corner connection ship type uses gantry submerged arc welding, open K shape groove 45 °, root face 8mm, gap 0～
1mm；Welding current 620～650A, voltage 27～33V, speed of welding 32～36cm/min, heat input 23.9～32.3kJ/cm；
Gantry submerged-arc welding uses welding wire H10Mn2, φ 5.0mm, solder flux uses SJ101, through 300～350 DEG C of bakings before solder flux welding, time
Between 2 hours.
The welding method of a kind of building structural steel Q345GJB the most according to claim 1, it is characterised in that described
The welding wire that submerged-arc welding automatic welding uses: H10Mn2, φ 4.0mm, solder flux uses SJ101；Through 300～350 DEG C of bakings before solder flux welding
Roasting, time 2 h.
The welding method of a kind of building structural steel Q345GJB the most according to claim 1, it is characterised in that described
CO2Gas shielded arc welding employing solid core welding wire: ER50-6, φ 1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610763646.4A CN106270952A (en) | 2016-08-30 | 2016-08-30 | A kind of welding method of building structural steel Q345GJB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610763646.4A CN106270952A (en) | 2016-08-30 | 2016-08-30 | A kind of welding method of building structural steel Q345GJB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106270952A true CN106270952A (en) | 2017-01-04 |
Family
ID=57675613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610763646.4A Pending CN106270952A (en) | 2016-08-30 | 2016-08-30 | A kind of welding method of building structural steel Q345GJB |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106270952A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894721A (en) * | 2017-12-07 | 2019-06-18 | 江门市新会区同达化工机械制造有限公司 | A kind of pressure vessel process method for welding and repairing |
| CN114178656A (en) * | 2021-12-03 | 2022-03-15 | 大连船舶重工集团有限公司 | Welding method for corrosion-resistant steel of crude oil tanker |
| CN114406418A (en) * | 2022-02-08 | 2022-04-29 | 首钢集团有限公司 | Non-preheating welding method for Q345-grade material |
| CN115007972A (en) * | 2022-06-13 | 2022-09-06 | 河南中桥重工科技有限公司 | Process for on-site automatic welding of corrugated steel web |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3807077A (en) * | 1972-04-04 | 1974-04-30 | Exomet | Method and apparatus for pre-heating structural shapes for welding |
| CN102896472A (en) * | 2012-10-23 | 2013-01-30 | 中国二十二冶集团有限公司 | Manufacturing method for box type pillar beam |
| CN104668720A (en) * | 2015-02-09 | 2015-06-03 | 中建一局钢结构工程有限公司 | Welding method for I-shaped butt joint of steel plates |
| CN105081528A (en) * | 2015-06-24 | 2015-11-25 | 浙江东南网架股份有限公司 | Welding technology of Q345qE structural steel |
-
2016
- 2016-08-30 CN CN201610763646.4A patent/CN106270952A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3807077A (en) * | 1972-04-04 | 1974-04-30 | Exomet | Method and apparatus for pre-heating structural shapes for welding |
| CN102896472A (en) * | 2012-10-23 | 2013-01-30 | 中国二十二冶集团有限公司 | Manufacturing method for box type pillar beam |
| CN104668720A (en) * | 2015-02-09 | 2015-06-03 | 中建一局钢结构工程有限公司 | Welding method for I-shaped butt joint of steel plates |
| CN105081528A (en) * | 2015-06-24 | 2015-11-25 | 浙江东南网架股份有限公司 | Welding technology of Q345qE structural steel |
Non-Patent Citations (2)
| Title |
|---|
| 《2011全国钢结构学术年会论文集》 * |
| 《中国建筑金属结构》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894721A (en) * | 2017-12-07 | 2019-06-18 | 江门市新会区同达化工机械制造有限公司 | A kind of pressure vessel process method for welding and repairing |
| CN114178656A (en) * | 2021-12-03 | 2022-03-15 | 大连船舶重工集团有限公司 | Welding method for corrosion-resistant steel of crude oil tanker |
| CN114406418A (en) * | 2022-02-08 | 2022-04-29 | 首钢集团有限公司 | Non-preheating welding method for Q345-grade material |
| CN115007972A (en) * | 2022-06-13 | 2022-09-06 | 河南中桥重工科技有限公司 | Process for on-site automatic welding of corrugated steel web |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106363281B (en) | A kind of welding method of building structural steel Q390GJC | |
| CN106270952A (en) | A kind of welding method of building structural steel Q345GJB | |
| CN101576450B (en) | Method for manufacturing surface crack defect test block for nondestructive flaw detection | |
| CN102019481B (en) | Plain butt welding process for high-strength hull structural steel | |
| CN105081528A (en) | Welding technology of Q345qE structural steel | |
| CN101462195B (en) | Method for welding 16MnDR low-temperature pressure container pot body closing end splicing welding line | |
| CN109604767A (en) | Intelligent welding control system and method for slab narrow gap GMA robot | |
| CN105252120B (en) | A kind of stainless steel cylinder liner circular-seam welding method | |
| CN110185138A (en) | A kind of welding ball grid and its method for assembling and welding | |
| CN105598563B (en) | A kind of gas shielded arc welding welding procedure of building structural steel Q420GJC | |
| CN107984105A (en) | The welding procedure of wind power tower S355NL steel | |
| CN102922085A (en) | Manual arc welding bottoming layer Z-shaped arc extinction method and application thereof in Q460 high-strength steel horizontally-fixed steel pipe butt welding | |
| CN107617803A (en) | Nuclear power steel containment vessel circumferential weld automatic submerged arc horizontal welding technique | |
| CN105115802A (en) | Novel welding repair CTOD (crack tip opening displacement) experimental method | |
| CN105499770B (en) | A kind of welding technology of automatic submerged-arc welding of building structural steel Q420GJC | |
| CN104759739B (en) | Compound welding process of railway vehicle box beam | |
| CN104259633A (en) | Efficient single-side submerged arc welding method | |
| CN1228167C (en) | Method for red copper transition welding without preheating metal alloy | |
| CN106041309A (en) | A kind of welding method of Q420 high strength steel | |
| CN105057844A (en) | Welding repair method for cracks on furnace shell of blast furnace | |
| CN103692061A (en) | Butt-welding method using dual-gun automatic horizontal welding bogie | |
| CN106270928A (en) | A kind of welding method of building structural steel Q460GJC | |
| CN107150161A (en) | A kind of T91 steel welding technologies | |
| CN106290363A (en) | A kind of quality inspection technique after steel-pipe welding | |
| CN102794550B (en) | Method for welding terminal circular seams of compound steel plates |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181213 Address after: 114000 Leymus chinensis Villa in Lishan District, Anshan City, Liaoning Province Applicant after: Angang Steel Structure Co., Ltd. Address before: No. 34 Anle Street, Tiedong District, Anshan City, Liaoning Province Applicant before: Angang Construction Consortium Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
|
| RJ01 | Rejection of invention patent application after publication |