CN105234533A - Steel welding technology - Google Patents
Steel welding technology Download PDFInfo
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- CN105234533A CN105234533A CN201510725689.9A CN201510725689A CN105234533A CN 105234533 A CN105234533 A CN 105234533A CN 201510725689 A CN201510725689 A CN 201510725689A CN 105234533 A CN105234533 A CN 105234533A
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- welding
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- argon gas
- carbon dioxide
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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
- B23K9/164—Arc welding or cutting making use of shielding gas making use of a moving fluid
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- Arc Welding In General (AREA)
Abstract
The invention relates to a steel welding technology. The steel welding technology comprises the following steps that welding technology parameters are determined, small linear energy and multi-layer welding are adopted, and gas flow and the welding speed are set; a groove is prepared; welding base materials are assembled in a butt joint manner, a welded part is determined, it is determined that no defect exists at the edge of the welded part, and then butt-joint tack welding is carried out; assembling fixed-position welding is carried out; argon and carbon dioxide mixed gas welding is adopted for bottoming welding; argon/carbon dioxide mixed gas welding is adopted for filling welding; argon/carbon dioxide mixed gas welding is adopted for screen welding; and overlaying, heating and knocking are carried out in sequence, and after overlaying is finished, a welding joint is partially heated to 880-920 DEG C, and heat preservation is carried out till cooling is achieved. The operation technology is improved, and therefore welding performance achieves the ideal state, and the steel welding technology can be suitable for welding of special steel, parts with the large partial welding quantity and parts subjected to technologies of quenching and tempering and other special heat treatment.
Description
Technical field
The present invention relates to the welding technology field of steel, particularly relate to a kind of welding procedure of steel.
Background technology
China's rolling shapes are many, and all steel all can weld in principle.Different welding materials and welding procedure is had for different steel.Welding procedure comprises wlding preheating, weld bond preheating, built-up welding mode and technique, postweld heat preservation, post weld heat treatment.Common process is little for the good steel of welding performance, welding scope, or better through the part process adaptability of normalized treatment.But for the steel that welding performance is poor, the part that local welding amount is larger, or through the part through special thermal treatment such as quenching+tempering, welding risk is comparatively large, and weld seam or the body connected with weld seam very easily crack.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of welded steel technique strengthening welded steel performance and postwelding stability.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of welded steel technique, comprises the following steps:
001: determine welding condition, adopt little heat input and multilayer to weldering, setting gas flow and speed of welding;
002: prepare groove, and groove and internal and external walls both sides are cleared up, until expose metallic luster;
003: by two block welding mother metal counterpart assemblings, and confirm part to be welded and edge zero defect thereof, then carry out counterpart tack welding, make welding material extension elongation control at 16-22mm;
004: assembling and positioning is welded, and assembling and positioning fusion length is greater than 50mm and is uniformly distributed, the electric current of tack welding should be greater than electric current during normal weld;
005: under the operating environment more than 8 DEG C, adopt argon gas, carbon dioxide gas mixture protection weldering to carry out bottoming welding;
006: adopt argon gas/carbon dioxide gas mixture protection weldering to fill welding;
007: adopt argon gas/carbon dioxide gas mixture protection weldering cover welding;
008: every built-up welding 3mm, weld seam is locally heated to 950-1000 DEG C, knocks heating region make it obviously be out of shape with hammer, then carries out built-up welding successively, heats, knocks, and after built-up welding completes, weld seam is locally heated to 880-920 DEG C, and insulation is until cooling.
Preferably, the groove in described step 002 is specially double V-groove, and adopts acetone or alcohol to clean to groove and both sides before welding.
Preferably, the welding material in described step 003 specifically adopts H08Cr19Ni12Mo2Si welding wire or 0Cr18Ni12Mo2 welding rod.
Preferably; the parameter of the bottoming welding in described step 005 is specially: electric current is 60 ~ 80 amperes; voltage is 10 ~ 15 volts; speed of welding is 50 ~ 60 mm/min; molten bath leads to protective gas argon gas; gas flow is 5 ~ 10 liters/min, and passes into protective gas argon gas, and flow is 5 ~ 10 liters/min
Preferably; the parameter of the filling welding in described step 006 is specially: electric current is 160 ~ 180 amperes; voltage is 25 ~ 30 volts; speed of welding is 180 ~ 220 mm/min; molten bath leads to protective gas argon gas; gas flow is 15 ~ 20 liters/min, passes into protective gas argon gas simultaneously, and flow is 8 ~ 15 liters/min.
Preferably, the parameter of the cover welding in described step 007 is specially: electric current is 140 ~ 160 amperes, and voltage is 25 ~ 30 volts, and speed of welding is 200 ~ 240 mm/min, and molten bath leads to protective gas argon gas, and flow is 15 ~ 20 liters/min.
Based on technique scheme, the invention has the beneficial effects as follows: make, between two block welding mother metals, there is good stretch-proof and resistant to bending welding performance; Adopt three step welding procedures of bottom argon arc welding, electric welding packing course and argon arc welding capping, to efficiently avoid in welding process welding material to the pollution of mother metal; And select the input of little heat when welding as far as possible, under the prerequisite ensureing welding quality, adopt little welding current and speed of welding faster, thus do not affect the corrosion resistance of mother metal, the mechanical property of mother metal can not be changed.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of welded steel technique of the present invention.
Detailed description of the invention
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, a kind of welded steel technique, comprises the following steps:
001: determine welding condition, adopt little heat input and multilayer to weldering, setting gas flow and speed of welding;
002: prepare groove, and groove and internal and external walls both sides are cleared up, until expose metallic luster;
003: by two block welding mother metal counterpart assemblings, and confirm part to be welded and edge zero defect thereof, then carry out counterpart tack welding, make welding material extension elongation control at 16-22mm;
004: assembling and positioning is welded, and assembling and positioning fusion length is greater than 50mm and is uniformly distributed, the electric current of tack welding should be greater than electric current during normal weld;
005: under the operating environment more than 8 DEG C, adopt argon gas, carbon dioxide gas mixture protection weldering to carry out bottoming welding;
006: adopt argon gas/carbon dioxide gas mixture protection weldering to fill welding;
007: adopt argon gas/carbon dioxide gas mixture protection weldering cover welding;
008: every built-up welding 3mm, weld seam is locally heated to 950-1000 DEG C, knocks heating region make it obviously be out of shape with hammer, then carries out built-up welding successively, heats, knocks, and after built-up welding completes, weld seam is locally heated to 880-920 DEG C, and insulation is until cooling.
Preferably, the groove in described step 002 is specially double V-groove, and adopts acetone or alcohol to clean to groove and both sides before welding.
Preferably, the welding material in described step 003 specifically adopts H08Cr19Ni12Mo2Si welding wire or 0Cr18Ni12Mo2 welding rod.
Preferably; the parameter of the bottoming welding in described step 005 is specially: electric current is 60 ~ 80 amperes; voltage is 10 ~ 15 volts; speed of welding is 50 ~ 60 mm/min; molten bath leads to protective gas argon gas; gas flow is 5 ~ 10 liters/min, and passes into protective gas argon gas, and flow is 5 ~ 10 liters/min
Preferably; the parameter of the filling welding in described step 006 is specially: electric current is 160 ~ 180 amperes; voltage is 25 ~ 30 volts; speed of welding is 180 ~ 220 mm/min; molten bath leads to protective gas argon gas; gas flow is 15 ~ 20 liters/min, passes into protective gas argon gas simultaneously, and flow is 8 ~ 15 liters/min.
Preferably, the parameter of the cover welding in described step 007 is specially: electric current is 140 ~ 160 amperes, and voltage is 25 ~ 30 volts, and speed of welding is 200 ~ 240 mm/min, and molten bath leads to protective gas argon gas, and flow is 15 ~ 20 liters/min.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a welded steel technique, is characterized in that, comprises the following steps:
001: determine welding condition, adopt little heat input and multilayer to weldering, setting gas flow and speed of welding;
002: prepare groove, and groove and internal and external walls both sides are cleared up, until expose metallic luster;
003: by two block welding mother metal counterpart assemblings, and confirm part to be welded and edge zero defect thereof, then carry out counterpart tack welding, make welding material extension elongation control at 16-22mm;
004: assembling and positioning is welded, and assembling and positioning fusion length is greater than 50mm and is uniformly distributed, the electric current of tack welding should be greater than electric current during normal weld;
005: under the operating environment more than 8 DEG C, adopt argon gas, carbon dioxide gas mixture protection weldering to carry out bottoming welding;
006: adopt argon gas/carbon dioxide gas mixture protection weldering to fill welding;
007: adopt argon gas/carbon dioxide gas mixture protection weldering cover welding;
008: every built-up welding 3mm, weld seam is locally heated to 950-1000 DEG C, knocks heating region make it obviously be out of shape with hammer, then continues to carry out built-up welding successively, heats, knocks, and after built-up welding completes, weld seam is locally heated to 880-920 DEG C, and insulation is until cooling.
2. a kind of welded steel technique according to claim 1, it is characterized in that, the groove in described step 002 is specially double V-groove, and adopts acetone or alcohol to clean to groove and both sides before welding.
3. a kind of welded steel technique according to claim 1, is characterized in that, the welding material in described step 003 specifically adopts H08Cr19Ni12Mo2Si welding wire or 0Cr18Ni12Mo2 welding rod.
4. a kind of welded steel technique according to any one of claims 1 to 3; it is characterized in that; the parameter of the bottoming welding in described step 005 is specially: electric current is 60 ~ 80 amperes; voltage is 10 ~ 15 volts; speed of welding is 50 ~ 60 mm/min, and molten bath leads to protective gas argon gas, and gas flow is 5 ~ 10 liters/min; and pass into protective gas argon gas, flow is 5 ~ 10 liters/min.
5. a kind of welded steel technique according to any one of claims 1 to 3; it is characterized in that; the parameter of the filling welding in described step 006 is specially: electric current is 160 ~ 180 amperes; voltage is 25 ~ 30 volts; speed of welding is 180 ~ 220 mm/min, and molten bath leads to protective gas argon gas, and gas flow is 15 ~ 20 liters/min; pass into protective gas argon gas, flow is 8 ~ 15 liters/min simultaneously.
6. a kind of welded steel technique according to any one of claims 1 to 3; it is characterized in that; the parameter of the cover welding in described step 007 is specially: electric current is 140 ~ 160 amperes; voltage is 25 ~ 30 volts; speed of welding is 200 ~ 240 mm/min; molten bath leads to protective gas argon gas, and flow is 15 ~ 20 liters/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510725689.9A CN105234533A (en) | 2015-10-30 | 2015-10-30 | Steel welding technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510725689.9A CN105234533A (en) | 2015-10-30 | 2015-10-30 | Steel welding technology |
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| CN105234533A true CN105234533A (en) | 2016-01-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108480822A (en) * | 2018-04-27 | 2018-09-04 | 江苏恒加机械工程有限公司 | A kind of metal alloy piece welding method |
| CN108705183A (en) * | 2018-07-18 | 2018-10-26 | 苏州瑞沁精密机械有限公司 | A kind of metal transfer welding method |
| CN110899929A (en) * | 2019-05-22 | 2020-03-24 | 唐山大通金属制品有限公司 | Dioxygen welding process for sheet head seam allowance |
| CN112803104A (en) * | 2021-01-13 | 2021-05-14 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Pressure-resistant high-volume-ratio energy battery pack and welding method thereof |
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| CN104708170A (en) * | 2013-12-16 | 2015-06-17 | 江苏鸿光杆塔有限公司 | Q460C steel welding process |
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| JPS53130251A (en) * | 1977-04-21 | 1978-11-14 | Nippon Kokan Kk <Nkk> | Gas shielded vertical position welding using high current density |
| JPH04361877A (en) * | 1991-06-06 | 1992-12-15 | Kyodo Sanso Kk | Gas shielded metal arc welding method |
| JP2001025893A (en) * | 1999-07-15 | 2001-01-30 | Nof Corp | Flux cored wire for welding stainless steel or nickel alloy |
| CN101259562A (en) * | 2008-03-20 | 2008-09-10 | 浙江盛达铁塔有限公司 | Welding technique for rolled steel |
| CN101890558A (en) * | 2010-07-07 | 2010-11-24 | 昆山华恒工程技术中心有限公司 | Automatically backing weld method of pipeline MAG |
| CN102179606A (en) * | 2011-02-18 | 2011-09-14 | 济钢集团有限公司 | Welding process for 1,000MPa level non-quenched and tempered high-strength steel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108480822A (en) * | 2018-04-27 | 2018-09-04 | 江苏恒加机械工程有限公司 | A kind of metal alloy piece welding method |
| CN108705183A (en) * | 2018-07-18 | 2018-10-26 | 苏州瑞沁精密机械有限公司 | A kind of metal transfer welding method |
| CN110899929A (en) * | 2019-05-22 | 2020-03-24 | 唐山大通金属制品有限公司 | Dioxygen welding process for sheet head seam allowance |
| CN110899929B (en) * | 2019-05-22 | 2022-03-25 | 唐山大通金属制品有限公司 | Dioxygen welding process for sheet head seam allowance |
| CN112803104A (en) * | 2021-01-13 | 2021-05-14 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Pressure-resistant high-volume-ratio energy battery pack and welding method thereof |
| CN112803104B (en) * | 2021-01-13 | 2022-09-27 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Pressure-resistant high-volume-ratio energy battery pack and welding method thereof |
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Application publication date: 20160113 |
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