CN105033415A - 15CrMo steel welding process - Google Patents
15CrMo steel welding process Download PDFInfo
- Publication number
- CN105033415A CN105033415A CN201510399351.9A CN201510399351A CN105033415A CN 105033415 A CN105033415 A CN 105033415A CN 201510399351 A CN201510399351 A CN 201510399351A CN 105033415 A CN105033415 A CN 105033415A
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- CN
- China
- Prior art keywords
- welding
- weld
- adopt
- speed
- smaw
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- 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.)
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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
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
-
- 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
- B23K9/02—Seam welding; Backing means; Inserts
-
- 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
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Abstract
The invention discloses a 15CrMo steel welding process and relates to the technical field of steel welding. The process mainly comprises the three steps of preparation before welding, welding and postweld heat treatment. The 15CrMo steel welding process is reasonable, the hot crack resistance of weld joints is high, welding yield is high, and the quality of weld joints is guaranteed.
Description
Technical field
The present invention relates to steel welding technology field, is more particularly a kind of welding procedure of 15CrMo steel.
Background technology
15CrMo steel is the pearlite type heat resisting steel of countries in the world extensive use, is the raw material being applicable to the visual plant that the industry such as chain drive, petrochemical industry works under high-temperature and high-pressure conditions.15CrMo has good mechanical property, welding performance is slightly poor, operating temperature can up to 540 DEG C, when temperature is more than 550 DEG C, its creep limit starts remarkable decline, still have higher creep rupture strength and creep resisting ability 300-400 DEG C of work, also have good kinds of anti-sulfur corrosion and resistant to hydrogen corrosive nature, corrosion rate is slow, long service life, has good application prospect and promotional value.
Summary of the invention
The object of the invention is to make up the deficiencies in the prior art, a kind of welding procedure of 15CrMo steel is provided.
The object of the invention is to be achieved through the following technical solutions:
A welding procedure for 15CrMo steel, is characterized in that: comprise the following steps:
(1) welds prepares:
The first, the selection of welding manner and welding material: select argon tungsten-arc welding to carry out prime coat welding, prime coat welding material is H08CrMoA welding wire, and wlding specification is φ 2.4; Select SMAW to carry out packed layer welding, packed layer welding material is E5515-B2L welding rod, and wlding specification is φ 3.2; Select SMAW to carry out the welding of capping layer, capping layer welding material is E5515-B2L welding rod, and wlding specification is φ 4.0;
The second, adopt the mode of gas flame cuttiug to open double V-groove to 15CrMo steel plate, alignment clearance is 3mm, root face amount 1mm, monolateral 30 °, worn quench-hardened case after cutting;
3rd, welding rod is incubated 1-2 hour at 350-400 DEG C, then puts into the heat-preservation cylinder of 100-150 DEG C, ready access upon use; Welding wire is incubated 2 hours at 30 DEG C;
4th, adopt welding gun neutral flame both sides, groove center to be not less than to 5 times of wall thickness, and be not less than 100mm scope and carry out preheating, 100mm scope beyond preheating zone is incubated;
(2) weld:
The first, prime coat welds, and adopt argon tungsten-arc welding to weld with the speed of 9-11cm/min, welding current 110A, weldingvoltage 12V, welding machine adopts straight polarity direct current;
The second, packed layer welds, and adopt SMAW to weld with the speed of 8-10cm/min, welding current 110-120A, weldingvoltage 22-24V, welding machine adopts DC reverse connection;
3rd, capping layer welds, and adopts SMAW to weld with the speed of 8-10cm/min, welding current 160-180A, weldingvoltage 25-27V;
(3) post weld heat treatment:
Adopt the speed butt welded seam of 200 DEG C/h to heat up, be incubated 1.2-1.5 hour after being warmed up to 690 DEG C, then lower the temperature with the speed of 100 DEG C/h, air cooling after dropping to 300 DEG C.
The invention has the advantages that: the welding procedure of 15CrMo steel of the present invention is reasonable, and weld seam thermal crack resistant ability is good, and solder yield is high, ensure that the quality of weld seam.
Detailed description of the invention
A welding procedure for 15CrMo steel, comprises the following steps:
(1) welds prepares:
The first, the selection of welding manner and welding material: select argon tungsten-arc welding to carry out prime coat welding, prime coat welding material is H08CrMoA welding wire, and wlding specification is φ 2.4; Select SMAW to carry out packed layer welding, packed layer welding material is E5515-B2L welding rod, and wlding specification is φ 3.2; Select SMAW to carry out the welding of capping layer, capping layer welding material is E5515-B2L welding rod, and wlding specification is φ 4.0;
The second, adopt the mode of gas flame cuttiug to open double V-groove to 15CrMo steel plate, alignment clearance is 3mm, root face amount 1mm, monolateral 30 °, worn quench-hardened case after cutting;
3rd, welding rod is incubated 1 hour at 350 DEG C, then puts into the heat-preservation cylinder of 100 DEG C, ready access upon use; Welding wire is incubated 2 hours at 30 DEG C;
4th, adopt welding gun neutral flame both sides, groove center to be not less than to 5 times of wall thickness, and be not less than 100mm scope and carry out preheating, 100mm scope beyond preheating zone is incubated;
(2) weld:
The first, prime coat welds, and adopt argon tungsten-arc welding to weld with the speed of 10cm/min, welding current 110A, weldingvoltage 12V, welding machine adopts straight polarity direct current;
The second, packed layer welds, and adopt SMAW to weld with the speed of 9cm/min, welding current 110A, weldingvoltage 22V, welding machine adopts DC reverse connection;
3rd, capping layer welds, and adopts SMAW to weld with the speed of 8cm/min, welding current 160A, weldingvoltage 25V.
Claims (1)
1. a welding procedure for 15CrMo steel, is characterized in that: comprise the following steps:
(1) welds prepares:
The first, the selection of welding manner and welding material: select argon tungsten-arc welding to carry out prime coat welding, prime coat welding material is H08CrMoA welding wire, and wlding specification is φ 2.4; Select SMAW to carry out packed layer welding, packed layer welding material is E5515-B2L welding rod, and wlding specification is φ 3.2; Select SMAW to carry out the welding of capping layer, capping layer welding material is E5515-B2L welding rod, and wlding specification is φ 4.0;
The second, adopt the mode of gas flame cuttiug to open double V-groove to 15CrMo steel plate, alignment clearance is 3mm, root face amount 1mm, monolateral 30 °, worn quench-hardened case after cutting;
3rd, welding rod is incubated 1-2 hour at 350-400 DEG C, then puts into the heat-preservation cylinder of 100-150 DEG C, ready access upon use; Welding wire is incubated 2 hours at 30 DEG C;
4th, adopt welding gun neutral flame both sides, groove center to be not less than to 5 times of wall thickness, and be not less than 100mm scope and carry out preheating, 100mm scope beyond preheating zone is incubated;
(2) weld:
The first, prime coat welds, and adopt argon tungsten-arc welding to weld with the speed of 9-11cm/min, welding current 110A, weldingvoltage 12V, welding machine adopts straight polarity direct current;
The second, packed layer welds, and adopt SMAW to weld with the speed of 8-10cm/min, welding current 110-120A, weldingvoltage 22-24V, welding machine adopts DC reverse connection;
3rd, capping layer welds, and adopts SMAW to weld with the speed of 8-10cm/min, welding current 160-180A, weldingvoltage 25-27V;
(3) post weld heat treatment:
Adopt the speed butt welded seam of 200 DEG C/h to heat up, be incubated 1.2-1.5 hour after being warmed up to 690 DEG C, then lower the temperature with the speed of 100 DEG C/h, air cooling after dropping to 300 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510399351.9A CN105033415A (en) | 2015-07-09 | 2015-07-09 | 15CrMo steel welding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510399351.9A CN105033415A (en) | 2015-07-09 | 2015-07-09 | 15CrMo steel welding process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105033415A true CN105033415A (en) | 2015-11-11 |
Family
ID=54440697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510399351.9A Pending CN105033415A (en) | 2015-07-09 | 2015-07-09 | 15CrMo steel welding process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105033415A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735760A (en) * | 2017-01-18 | 2017-05-31 | 安徽马钢工程技术集团有限公司 | A kind of welding procedure of 15CrMo heat-resisting alloy steels |
| CN111761173A (en) * | 2020-06-17 | 2020-10-13 | 武汉钢铁有限公司 | Welding method of 38CrMoAI steel |
| CN113070548A (en) * | 2021-04-01 | 2021-07-06 | 西安热工研究院有限公司 | Anti-cracking welding method for welding seam |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07100688A (en) * | 1993-09-30 | 1995-04-18 | Kobe Steel Ltd | Tig welding wire for high-strength cr-mo steel |
| CN1935438A (en) * | 2006-06-09 | 2007-03-28 | 浙江省火电建设公司 | P92 steel welding process |
| CN102756218A (en) * | 2011-04-27 | 2012-10-31 | 五冶集团上海有限公司 | Benzene hydrogenation engineering heat resistant steel pipeline welding method |
| CN104551337A (en) * | 2015-01-23 | 2015-04-29 | 中誉远发国际建设集团有限公司 | 30CrMo heat resistant steel pipeline welding construction method |
-
2015
- 2015-07-09 CN CN201510399351.9A patent/CN105033415A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07100688A (en) * | 1993-09-30 | 1995-04-18 | Kobe Steel Ltd | Tig welding wire for high-strength cr-mo steel |
| CN1935438A (en) * | 2006-06-09 | 2007-03-28 | 浙江省火电建设公司 | P92 steel welding process |
| CN102756218A (en) * | 2011-04-27 | 2012-10-31 | 五冶集团上海有限公司 | Benzene hydrogenation engineering heat resistant steel pipeline welding method |
| CN104551337A (en) * | 2015-01-23 | 2015-04-29 | 中誉远发国际建设集团有限公司 | 30CrMo heat resistant steel pipeline welding construction method |
Non-Patent Citations (1)
| Title |
|---|
| 刘光文: ""对15CrMo钢的一项焊接工艺的研究"", 《电子世界》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735760A (en) * | 2017-01-18 | 2017-05-31 | 安徽马钢工程技术集团有限公司 | A kind of welding procedure of 15CrMo heat-resisting alloy steels |
| CN111761173A (en) * | 2020-06-17 | 2020-10-13 | 武汉钢铁有限公司 | Welding method of 38CrMoAI steel |
| CN113070548A (en) * | 2021-04-01 | 2021-07-06 | 西安热工研究院有限公司 | Anti-cracking welding method for welding seam |
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Application publication date: 20151111 |