CN107755859A - A kind of method that can improve steel groove welding quality - Google Patents
A kind of method that can improve steel groove welding quality Download PDFInfo
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- CN107755859A CN107755859A CN201610690284.0A CN201610690284A CN107755859A CN 107755859 A CN107755859 A CN 107755859A CN 201610690284 A CN201610690284 A CN 201610690284A CN 107755859 A CN107755859 A CN 107755859A
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Classifications
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- 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
- B23K9/235—Preliminary treatment
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- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of method that can improve steel groove welding quality, comprise the following steps：The cleaning of mother metal, end tab, preheating, striking and blow-out, butt welding, fillet weld, the removing for the weld seam that completes, the protection of site welding joint are set.The welding method carries out rational operation order to welded steel process, so that the quality of welding reaches requirement, ensure that steel reach design requirement when in use, solve existing when being welded to steel, because the technique of welding is lack of standardization, it is of poor quality to easily cause welded steel, weld occur in follow-up use comes off, the problem of influenceing using effect.
Description
Technical field
The present invention relates to a kind of method, more particularly, to a kind of method that can improve steel groove welding quality.
Background technology
Welding：Also referred to as welding, Rong connects, and is a kind of jointing metal in a manner of heating, high temperature or high pressure or other heat
The manufacturing process and technology of plastic material such as plastics.The purpose of engagement is reached in welding by following three approach：Heating is intended to engage
Workpiece be allowed to be partially melting to form molten bath, just engaged after the cooled and solidified of molten bath, can add molten fill out thing auxiliary if necessary.Individually add
The relatively low solder of heat fusion joint, without melting workpiece in itself, workpiece is connected by means of the capillarity of solder（Such as solder, hard solder）.
It is aided with high pressure at a temperature of equal to or below workpiece fusing point, overlapping extrusion molding or vibration etc. make to interpenetrate engagement between two workpiece
（Such as smithwelding, solid State Welding）.According to specific welding procedure, welding can be subdivided into gas welding, electric resistance welding, arc welding, induction welding and
Other special welding such as laser welding.There are a many kinds in the energy source of welding, including gas flame, electric arc, laser, electron beam, rubs
Wiping and ultrasonic wave etc..In addition to use in the factory, welding can also be carried out in a variety of contexts, such as field, underwater and space.
No matter wherein, welding all may bring danger to operator, so must take appropriate safeguard procedures when being welded.
Weld includes burn, electric shock, inpairment of vision, suction toxic gas, ultraviolet overexposure etc. to injury caused by human body possibility.
When being welded to steel, because the technique of welding is lack of standardization, it is of poor quality to easily cause welded steel, in follow-up use
Existing weld comes off, and influences using effect.
The content of the invention
It is above-mentioned existing when being welded to steel it is an object of the invention to overcome, because the technique of welding is lack of standardization,
It is of poor quality to easily cause welded steel, weld occur in follow-up use comes off, the problem of influenceing using effect, devises one
The method that kind can improve steel groove welding quality, the welding method carry out rational operation order to welded steel process,
So that the quality of welding reaches requirement, ensure that steel reach design requirement when in use, solve and existing welded to steel
When connecing, because the technique of welding is lack of standardization, it is of poor quality to easily cause welded steel, and weld occur in follow-up use comes off,
The problem of influenceing using effect.
The purpose of the present invention is achieved through the following technical solutions：A kind of method that can improve steel groove welding quality,
Comprise the following steps：
（1）The cleaning of mother metal：In the range of 30-50mm of solder flux groove and both sides of mother metal, gas cutting must be thoroughly removed before weldering
Skin, slag, rust, oil, coating, dust, moisture content etc. influence the impurity of welding quality；
（2）End tab is set：To go out to ensure welding quality, arc end and blow-out end in butt welding, it is necessary to installation and mother metal phase
With the end tab of material, the groove type and thickness of slab of end tab are preferably identical with component in principle, the length of end tab, manual arc
Weldering and gas shielded arc welding are 25~50mm；Semiautomatic welding is 40~60mm；Lincoln weld is 50~l00mm；Melt mouth electroslag
Weld as more than l00mm；
（3）Preheating：The welding of steel construction, (hydrogen content in steel grade, thickness of slab, the constraint (restraint) degree of joint and soldered metal etc. should be regarded
Factor) steel intensity and welding method used determine suitable preheating temperature and method, carbon structural steels thickness is more than
50mm, low-alloy high-tensile structural steel thickness are more than 36mm, and preheating temperature preferably controls at 100~150 degrees Celsius, in advance before it is welded
Hot-zone is respectively more than 2 times of weldment thickness, and no less than l00mm in welding bead both sides, its width；
（4）Striking and blow-out：Because electric arc is to the underheat of mother metal during striking, should operationally pay attention to preventing fusion not
The generation of the defects of good, arc crater crack, stomata and slag inclusion, in addition, electricity must not be prevented striking on the mother metal in non-solder region
Arc percussion mark, when electric arc interrupts for some reason or weld seam terminal receives arc, it should prevent inside and outside arc crater, using CO2Semi-automatic gas is protected
It during shield weldering, should more avoid that crater crack occurs, once it is cracked, it is necessary to it can continue to weld after thoroughly removing；
（5）Butt welding：It is required that the two-sided butt weld of penetration, terminates in one side welding, should thoroughly be removed before another side welding
After root of weld defect to front metal, reverse side welding can be carried out, but using Lincoln weld and can guarantee that through welding in the case of, permit
Perhaps without back chipping, using the butting grooves weld seam of back side steel pad, the engagement between backing plate and mother metal must be close, should make welding
Metal fuses completely with backing plate, and the workpiece docking of different-thickness, its slab side should be processed into gentle transition shape, when thickness of slab is poor
During more than 4mm, thickness of slab side should be processed into 1：2.5—1：5 gradient, joint and thin plate uniform thickness；
（6）Fillet weld：The both sides leg of isogonism fillet weld, must not there is significant difference；To not isogonism filler weld, it should be noted that
Ensure fillet weld size, and seamlessly transit welding toe, it is desirable to weld dished angle welding, typically using the welding of ship shape position or its
His measure makes gentle transition between weld metal and mother metal, the weld seam as that need to be processed into concave surface, must not leave cut channel on its surface, fill out
Angle welding or the convexity C values of single cap bead must not exceed the 7%+1.5mm of the weld seam or welding bead actual surface width value, when
When on component, the preferably continuous cornerite weldering in corner, acnode of rising and falling should not be in end or edges and corners, should be away from weld seam for the end of angle welding
More than portion 10mm, when filler weld Size of welds is more than 18mm, from economy and reduces welding deformation and consider, will should be filled out in technique
It is more reasonable that angle welding is changed to bevel partial penetration weld seam；
（7）The removing of completion weld seam：Welding finishes, and welder should remove the slag of face of weld and the splash of both sides, checks weldering
Presentation quality is stitched, at the position of process stipulation welder's steel seal is stamped after qualified；
（8）The protection of site welding joint：At the scene welding portion and each 50~l00mm in adjacent both sides in the range of, must not enter
The coating such as row factory paint, spraying zinc, aluminium, if but during using to welding harmless coating, without this limitation.
In summary, the beneficial effects of the invention are as follows：The welding method is reasonably operated suitable to welded steel process
Sequence so that the quality of welding reaches requirement, ensures that steel reach design requirement when in use, solves and existing is carried out to steel
During welding, because the technique of welding is lack of standardization, it is of poor quality to easily cause welded steel, and weld occur in follow-up use takes off
Fall, the problem of influenceing using effect.
Embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited only to
This.
Embodiment：
A kind of method that can improve steel groove welding quality, comprises the following steps：
（1）The cleaning of mother metal：In the range of 30-50mm of solder flux groove and both sides of mother metal, gas cutting must be thoroughly removed before weldering
Skin, slag, rust, oil, coating, dust, moisture content etc. influence the impurity of welding quality；
（2）End tab is set：To go out to ensure welding quality, arc end and blow-out end in butt welding, it is necessary to installation and mother metal phase
With the end tab of material, the groove type and thickness of slab of end tab are preferably identical with component in principle, the length of end tab, manual arc
Weldering and gas shielded arc welding are 25~50mm；Semiautomatic welding is 40~60mm；Lincoln weld is 50~l00mm；Melt mouth electroslag
Weld as more than l00mm；
（3）Preheating：The welding of steel construction, (hydrogen content in steel grade, thickness of slab, the constraint (restraint) degree of joint and soldered metal etc. should be regarded
Factor) steel intensity and welding method used determine suitable preheating temperature and method, carbon structural steels thickness is more than
50mm, low-alloy high-tensile structural steel thickness are more than 36mm, and preheating temperature preferably controls at 100~150 degrees Celsius, in advance before it is welded
Hot-zone is respectively more than 2 times of weldment thickness, and no less than l00mm in welding bead both sides, its width；
（4）Striking and blow-out：Because electric arc is to the underheat of mother metal during striking, should operationally pay attention to preventing fusion not
The generation of the defects of good, arc crater crack, stomata and slag inclusion, in addition, electricity must not be prevented striking on the mother metal in non-solder region
Arc percussion mark, when electric arc interrupts for some reason or weld seam terminal receives arc, it should prevent inside and outside arc crater, using CO2Semi-automatic gas is protected
It during shield weldering, should more avoid that crater crack occurs, once it is cracked, it is necessary to it can continue to weld after thoroughly removing；
（5）Butt welding：It is required that the two-sided butt weld of penetration, terminates in one side welding, should thoroughly be removed before another side welding
After root of weld defect to front metal, reverse side welding can be carried out, but using Lincoln weld and can guarantee that through welding in the case of, permit
Perhaps without back chipping, using the butting grooves weld seam of back side steel pad, the engagement between backing plate and mother metal must be close, should make welding
Metal fuses completely with backing plate, and the workpiece docking of different-thickness, its slab side should be processed into gentle transition shape, when thickness of slab is poor
During more than 4mm, thickness of slab side should be processed into 1：2.5—1：5 gradient, joint and thin plate uniform thickness；
（6）Fillet weld：The both sides leg of isogonism fillet weld, must not there is significant difference；To not isogonism filler weld, it should be noted that
Ensure fillet weld size, and seamlessly transit welding toe, it is desirable to weld dished angle welding, typically using the welding of ship shape position or its
His measure makes gentle transition between weld metal and mother metal, the weld seam as that need to be processed into concave surface, must not leave cut channel on its surface, fill out
Angle welding or the convexity C values of single cap bead must not exceed the 7%+1.5mm of the weld seam or welding bead actual surface width value, when
When on component, the preferably continuous cornerite weldering in corner, acnode of rising and falling should not be in end or edges and corners, should be away from weld seam for the end of angle welding
More than portion 10mm, when filler weld Size of welds is more than 18mm, from economy and reduces welding deformation and consider, will should be filled out in technique
It is more reasonable that angle welding is changed to bevel partial penetration weld seam；
（7）The removing of completion weld seam：Welding finishes, and welder should remove the slag of face of weld and the splash of both sides, checks weldering
Presentation quality is stitched, at the position of process stipulation welder's steel seal is stamped after qualified；
（8）The protection of site welding joint：At the scene welding portion and each 50~l00mm in adjacent both sides in the range of, must not enter
The coating such as row factory paint, spraying zinc, aluminium, if but during using to welding harmless coating, without this limitation.
The welding method carries out rational operation order to welded steel process so that the quality of welding reaches requirement, protects
Card steel reach design requirement when in use, solve it is existing when being welded to steel, because the technique of welding is lack of standardization,
It is of poor quality to easily cause welded steel, weld occur in follow-up use comes off, the problem of influenceing using effect.
It is described above, be only presently preferred embodiments of the present invention, any formal limitation not done to the present invention, it is every according to
Any simply modification, the equivalent variations substantially made according to the technology of the present invention, method to above example, each fall within the present invention
Protection domain within.
Claims (1)
- A kind of 1. method that can improve steel groove welding quality, it is characterised in that comprise the following steps：（1）The cleaning of mother metal：In the range of 30-50mm of solder flux groove and both sides of mother metal, gas cutting must be thoroughly removed before weldering Skin, slag, rust, oil, coating, dust, moisture content etc. influence the impurity of welding quality；（2）End tab is set：To go out to ensure welding quality, arc end and blow-out end in butt welding, it is necessary to installation and mother metal phase With the end tab of material, the groove type and thickness of slab of end tab are preferably identical with component in principle, the length of end tab, manual arc Weldering and gas shielded arc welding are 25~50mm；Semiautomatic welding is 40~60mm；Lincoln weld is 50~l00mm；Melt mouth electroslag Weld as more than l00mm；（3）Preheating：The welding of steel construction, (hydrogen content in steel grade, thickness of slab, the constraint (restraint) degree of joint and soldered metal etc. should be regarded Factor) steel intensity and welding method used determine suitable preheating temperature and method, carbon structural steels thickness is more than 50mm, low-alloy high-tensile structural steel thickness are more than 36mm, and preheating temperature preferably controls at 100~150 degrees Celsius, in advance before it is welded Hot-zone is respectively more than 2 times of weldment thickness, and no less than l00mm in welding bead both sides, its width；（4）Striking and blow-out：Because electric arc is to the underheat of mother metal during striking, should operationally pay attention to preventing fusion not The generation of the defects of good, arc crater crack, stomata and slag inclusion, in addition, electricity must not be prevented striking on the mother metal in non-solder region Arc percussion mark, when electric arc interrupts for some reason or weld seam terminal receives arc, it should prevent inside and outside arc crater, using CO2Semi-automatic gas is protected It during shield weldering, should more avoid that crater crack occurs, once it is cracked, it is necessary to it can continue to weld after thoroughly removing；（5）Butt welding：It is required that the two-sided butt weld of penetration, terminates in one side welding, should thoroughly be removed before another side welding After root of weld defect to front metal, reverse side welding can be carried out, but using Lincoln weld and can guarantee that through welding in the case of, permit Perhaps without back chipping, using the butting grooves weld seam of back side steel pad, the engagement between backing plate and mother metal must be close, should make welding Metal fuses completely with backing plate, and the workpiece docking of different-thickness, its slab side should be processed into gentle transition shape, when thickness of slab is poor During more than 4mm, thickness of slab side should be processed into 1：2.5—1：5 gradient, joint and thin plate uniform thickness；（6）Fillet weld：The both sides leg of isogonism fillet weld, must not there is significant difference；To not isogonism filler weld, it should be noted that Ensure fillet weld size, and seamlessly transit welding toe, it is desirable to weld dished angle welding, typically using the welding of ship shape position or its His measure makes gentle transition between weld metal and mother metal, the weld seam as that need to be processed into concave surface, must not leave cut channel on its surface, fill out Angle welding or the convexity C values of single cap bead must not exceed the 7%+1.5mm of the weld seam or welding bead actual surface width value, when When on component, the preferably continuous cornerite weldering in corner, acnode of rising and falling should not be in end or edges and corners, should be away from weld seam for the end of angle welding More than portion 10mm, when filler weld Size of welds is more than 18mm, from economy and reduces welding deformation and consider, will should be filled out in technique It is more reasonable that angle welding is changed to bevel partial penetration weld seam；（7）The removing of completion weld seam：Welding finishes, and welder should remove the slag of face of weld and the splash of both sides, checks weldering Presentation quality is stitched, at the position of process stipulation welder's steel seal is stamped after qualified；（8）The protection of site welding joint：At the scene welding portion and each 50~l00mm in adjacent both sides in the range of, must not enter The coating such as row factory paint, spraying zinc, aluminium, if but during using to welding harmless coating, without this limitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610690284.0A CN107755859A (en) | 2016-08-19 | 2016-08-19 | A kind of method that can improve steel groove welding quality |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610690284.0A CN107755859A (en) | 2016-08-19 | 2016-08-19 | A kind of method that can improve steel groove welding quality |
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| CN107755859A true CN107755859A (en) | 2018-03-06 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109290741A (en) * | 2018-10-23 | 2019-02-01 | 江苏长风海洋装备制造有限公司 | A kind of longitudinal seam welding technique for large-scale wind electricity tower |
| CN109759679A (en) * | 2019-03-22 | 2019-05-17 | 中铁宝桥集团有限公司 | A kind of welding method of Q500qE and Q690qE ultra-low-carbon bainite steel xenogenesis banjo fixing butt jointing |
| CN109940246A (en) * | 2019-05-08 | 2019-06-28 | 天津中车唐车轨道车辆有限公司 | Plug welding hole welding method |
| CN110682010A (en) * | 2019-10-22 | 2020-01-14 | 嘉兴凤翼特种材料科技有限公司 | Method for removing metal adhering slag generated by laser cutting or punching |
| CN111590179A (en) * | 2020-06-04 | 2020-08-28 | 江苏宝强钢结构有限公司 | Efficient full-automatic steel structure welding technology and method thereof |
| CN111716078A (en) * | 2019-03-22 | 2020-09-29 | 上海梅山钢铁股份有限公司 | Plasma welding method for straight seam of thin-wall cylindrical steel shell |
-
2016
- 2016-08-19 CN CN201610690284.0A patent/CN107755859A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109290741A (en) * | 2018-10-23 | 2019-02-01 | 江苏长风海洋装备制造有限公司 | A kind of longitudinal seam welding technique for large-scale wind electricity tower |
| CN109290741B (en) * | 2018-10-23 | 2019-09-24 | 江苏长风海洋装备制造有限公司 | A kind of longitudinal seam welding technique for large-scale wind electricity tower |
| CN109759679A (en) * | 2019-03-22 | 2019-05-17 | 中铁宝桥集团有限公司 | A kind of welding method of Q500qE and Q690qE ultra-low-carbon bainite steel xenogenesis banjo fixing butt jointing |
| CN111716078A (en) * | 2019-03-22 | 2020-09-29 | 上海梅山钢铁股份有限公司 | Plasma welding method for straight seam of thin-wall cylindrical steel shell |
| CN109759679B (en) * | 2019-03-22 | 2022-01-11 | 中铁宝桥集团有限公司 | Welding method for Q500qE and Q690qE ultra-low carbon bainite steel dissimilar butt joint |
| CN109940246A (en) * | 2019-05-08 | 2019-06-28 | 天津中车唐车轨道车辆有限公司 | Plug welding hole welding method |
| CN110682010A (en) * | 2019-10-22 | 2020-01-14 | 嘉兴凤翼特种材料科技有限公司 | Method for removing metal adhering slag generated by laser cutting or punching |
| CN111590179A (en) * | 2020-06-04 | 2020-08-28 | 江苏宝强钢结构有限公司 | Efficient full-automatic steel structure welding technology and method thereof |
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Application publication date: 20180306 |