CN102632330B - Submerged arc welding method of ultralow carbon stainless steel thick plate - Google Patents
Submerged arc welding method of ultralow carbon stainless steel thick plate Download PDFInfo
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- CN102632330B CN102632330B CN201210145587.6A CN201210145587A CN102632330B CN 102632330 B CN102632330 B CN 102632330B CN 201210145587 A CN201210145587 A CN 201210145587A CN 102632330 B CN102632330 B CN 102632330B
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- 238000003466 welding Methods 0.000 title claims abstract description 66
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 61
- 239000010935 stainless steel Substances 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 38
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 31
- 239000011229 interlayer Substances 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims description 10
- 230000007547 defect Effects 0.000 abstract description 14
- 230000007797 corrosion Effects 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 9
- 238000002844 melting Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 239000000203 mixture Substances 0.000 description 8
- 238000005476 soldering Methods 0.000 description 6
- 238000010257 thawing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
The invention discloses a submerged arc welding method of an ultralow carbon stainless steel thick plate. Large linear energy and higher interlayer temperature are adopted; the linear energy is 20-380A; and the interlayer temperature is 1200-1500 DEG C. According to the submerged arc welding method of the ultralow carbon stainless steel thick plate, by adopting the large linear energy and the higher interlayer temperature, thorough melting can be maintained in a melting bath; and the occurrence of the critical defect-micro crack defect in the process of welding of the stainless steel thick plate is avoided, thus obtaining a high-performance-index weld. The technological principle that preheating is not allowed and low linear energy is required to be adopted, which is followed in the process of welding stainless steel, is broken fundamentally; and the indexes of the obtained weld, such as chemical components, mechanical performance, weld inherent defects, resistance to intergranular corrosion and the like, meet technical requirements.
Description
Technical field
The invention belongs to welding technique field, the submerged-arc welding method of concrete is a kind of super-low carbon stainless steel slab.
Background technology
In existing solder technology, it is comparative maturity comparatively speaking that the pressure vessel of Welding Metallurgy, evaporator shell, Hi-Stren steel material and thickness are less than the stainless welding procedure of 20mm, but have in existing welding procedure that input heat is large, distortion is large, heat affected area is wide with the shortcomings such as impact toughness at room temperature is lower under identical heat-treat condition, this is concerning the equipment requiring high tenacity and low embrittlement, and prior art cannot meet the demands.In stainless solder technology, the problem solving crackle is more complicated and difficulty, especially for super-low carbon stainless steel slab, higher to welding process requirement.
Given this, the present invention is intended to a kind of submerged-arc welding method exploring super-low carbon stainless steel slab, this submerged-arc welding method can obtain the weld seam of high performance index, and the index such as chemical composition, mechanical performance, weld seam internal flaw, anti intercrystalline corrosion performance of weld seam, all meets technical requirement.
Summary of the invention
The technical problem to be solved in the present invention is a kind of submerged-arc welding method proposing super-low carbon stainless steel slab, this submerged-arc welding method can obtain the weld seam of high performance index, the index such as chemical composition, mechanical performance, weld seam internal flaw, anti intercrystalline corrosion performance of weld seam, all meets technical requirement.
Realize above-mentioned technical purpose, the submerged-arc welding method of super-low carbon stainless steel slab of the present invention, adopt large-line energy and higher interlayer temperature, described heat input is 20-380KJ/dm, and interlayer temperature is 1200-1500 DEG C.
Further, when thickness of slab is more than or equal to 15mm, adopt welding by both sides; When thickness of slab is less than 15mm, adopt single welding;
Further, when thickness of slab is 20mm, adopt welding by both sides, heat input is 260-280 KJ/dm, and interlayer temperature is 1200-1450 DEG C;
Further, when thickness of slab is 15mm, adopt welding by both sides, heat input is 220-250 KJ/dm, and interlayer temperature is 1200-1400 DEG C;
Further, when thickness of slab is 10mm, adopt single welding, heat input is 150-180 KJ/dm, and interlayer temperature is 1200-1300 DEG C;
Further, when thickness of slab is 5mm, adopt single welding, heat input is 100-120 KJ/dm, and interlayer temperature is 1200-1300 DEG C;
Further, when thickness of slab is 2mm, adopt single welding, heat input is 80-100 KJ/dm, and interlayer temperature is 1200-1300 DEG C;
Further, when thickness of slab is greater than 20mm, adopt welding by both sides, heat input is 280-380 KJ/dm, and interlayer temperature is 1200-1500 DEG C;
Further, when thickness of slab is less than 2mm, adopt single welding, heat input is 20-80 KJ/dm, and interlayer temperature is 1200-1300 DEG C;
Further, the material of stainless steel thick plate is 00Cr18Ni10.
Beneficial effect of the present invention is:
The submerged-arc welding method of super-low carbon stainless steel slab of the present invention is by adopting large-line energy and higher interlayer temperature, the abundant thawing in molten bath can be kept, effectively avoid the critical defect that stainless steel thick plate welds---the appearance of micro-flaw defect, thus obtain the weld seam of high performance index, continue to use when fundamentally having broken soldering stainless steel observe mustn't preheating and require to adopt the technological principle of bottom line energy, and the indexs such as the weld seam chemical composition obtained, mechanical performance, weld seam internal flaw, anti intercrystalline corrosion performance, all meet technical requirement.
Detailed description of the invention
Below in conjunction with embodiment, the specific embodiment of the present invention is elaborated.
The submerged-arc welding method of super-low carbon stainless steel slab of the present invention, adopt large-line energy and higher interlayer temperature, described heat input is 20-380 KJ/dm, and interlayer temperature is 1200-1500 DEG C.When thickness of slab is more than or equal to 15mm, adopt welding by both sides; When thickness of slab is less than 15mm, adopt single welding.
first embodiment
In the submerged-arc welding method of the super-low carbon stainless steel slab of the present embodiment, the material of stainless steel thick plate is 00Cr18Ni10, the thickness of stainless steel thick plate is for being 20mm, adopt welding by both sides, heat input can select 260-280 KJ/dm, interlayer temperature can select 1200-1450 DEG C, and the heat input of the present embodiment selects 270 KJ/dm, and interlayer temperature is 1400 DEG C.
The submerged-arc welding method of the super-low carbon stainless steel slab of the present embodiment is by adopting the interlayer temperature of 260-280 KJ/dm large-line energy and 1200-1450 DEG C, the abundant thawing in molten bath can be kept, effectively avoid the critical defect that stainless steel thick plate welds---the appearance of micro-flaw defect, thus obtain the weld seam of high performance index, continue to use when fundamentally having broken soldering stainless steel observe mustn't preheating and require to adopt the technological principle of bottom line energy, and the weld seam chemical composition obtained, mechanical performance, weld seam internal flaw, the indexs such as anti intercrystalline corrosion performance, all meet technical requirement.
second embodiment
In the submerged-arc welding method of the super-low carbon stainless steel slab of the present embodiment, the material of stainless steel thick plate is 00Cr17Ni14Mo2, the thickness of stainless steel thick plate is for being 15mm, adopt welding by both sides, heat input can select 220-250 KJ/dm, interlayer temperature can select 1200-1400 DEG C, and the heat input of the present embodiment selects 250 KJ/dm, and interlayer temperature is 1400 DEG C.
The submerged-arc welding method of the super-low carbon stainless steel slab of the present embodiment is by adopting the interlayer temperature of 220-250 KJ/dm large-line energy and 1200-1400 DEG C, the abundant thawing in molten bath can be kept, effectively avoid the critical defect that stainless steel thick plate welds---the appearance of micro-flaw defect, thus obtain the weld seam of high performance index, continue to use when fundamentally having broken soldering stainless steel observe mustn't preheating and require to adopt the technological principle of bottom line energy, and the weld seam chemical composition obtained, mechanical performance, weld seam internal flaw, the indexs such as anti intercrystalline corrosion performance, all meet technical requirement.
3rd embodiment
In the submerged-arc welding method of the super-low carbon stainless steel slab of the present embodiment, the material of stainless steel thick plate is 00Cr18Ni10, the thickness of stainless steel thick plate is for being 10mm, adopt single welding, heat input can select 150-180 KJ/dm, interlayer temperature can select 1200-1300 DEG C, and the heat input of the present embodiment selects 180, and interlayer temperature is 1300 DEG C.
The submerged-arc welding method of the super-low carbon stainless steel slab of the present embodiment is by adopting the interlayer temperature of 150-180 KJ/dm large-line energy and 1200-1300 DEG C, the abundant thawing in molten bath can be kept, effectively avoid the critical defect that stainless steel thick plate welds---the appearance of micro-flaw defect, thus obtain the weld seam of high performance index, continue to use when fundamentally having broken soldering stainless steel observe mustn't preheating and require to adopt the technological principle of bottom line energy, and the weld seam chemical composition obtained, mechanical performance, weld seam internal flaw, the indexs such as anti intercrystalline corrosion performance, all meet technical requirement.
4th embodiment
In the submerged-arc welding method of the super-low carbon stainless steel slab of the present embodiment, the material of stainless steel thick plate is 00Cr22Ni5Mo3N, the thickness of stainless steel thick plate is for being 5mm, adopt single welding, heat input can select 100-120 KJ/dm, interlayer temperature can select 1200-1300 DEG C, and the heat input of the present embodiment selects 120, and interlayer temperature is 1250 DEG C.
The submerged-arc welding method of the super-low carbon stainless steel slab of the present embodiment is by adopting the interlayer temperature of 100-120 KJ/dm large-line energy and 1200-1300 DEG C, the abundant thawing in molten bath can be kept, effectively avoid the critical defect that stainless steel thick plate welds---the appearance of micro-flaw defect, thus obtain the weld seam of high performance index, continue to use when fundamentally having broken soldering stainless steel observe mustn't preheating and require to adopt the technological principle of bottom line energy, and the weld seam chemical composition obtained, mechanical performance, weld seam internal flaw, the indexs such as anti intercrystalline corrosion performance, all meet technical requirement.
5th embodiment
In the submerged-arc welding method of the super-low carbon stainless steel slab of the present embodiment, the material of stainless steel thick plate is 00Cr18Ni10, the thickness of stainless steel thick plate is 2mm, adopt single welding, heat input can select 80-100 KJ/dm, interlayer temperature can select 1200-1300 DEG C, and the heat input of the present embodiment selects 80, and interlayer temperature is 1200 DEG C.
The submerged-arc welding method of the super-low carbon stainless steel slab of the present embodiment is by adopting the interlayer temperature of 80-100 KJ/dm large-line energy and 1200-1300 DEG C, the abundant thawing in molten bath can be kept, effectively avoid the critical defect that stainless steel thick plate welds---the appearance of micro-flaw defect, thus obtain the weld seam of high performance index, continue to use when fundamentally having broken soldering stainless steel observe mustn't preheating and require to adopt the technological principle of bottom line energy, and the weld seam chemical composition obtained, mechanical performance, weld seam internal flaw, the indexs such as anti intercrystalline corrosion performance, all meet technical requirement.
6th embodiment
In the submerged-arc welding method of the super-low carbon stainless steel slab of the present embodiment, the material of stainless steel thick plate is 00Cr18Ni10, and the thickness of stainless steel thick plate, for being greater than 20mm, adopts welding by both sides, heat input can select 280-380 KJ/dm, and interlayer temperature can select 1200-1500 DEG C.
7th embodiment
In the submerged-arc welding method of the super-low carbon stainless steel slab of the present embodiment, the material of stainless steel thick plate is 00Cr18Ni10, and the thickness of stainless steel thick plate is less than 2mm, and adopt single welding, heat input can select 20-80 KJ/dm, and interlayer temperature can select 1200-1300 DEG C.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (8)
1. a submerged-arc welding method for super-low carbon stainless steel slab, is characterized in that: adopt large-line energy and higher interlayer temperature, described heat input is 20-380KJ/dm, and interlayer temperature is 1200-1500 DEG C; When thickness of slab is more than or equal to 15mm, adopt welding by both sides; When thickness of slab is less than 15mm, adopt single welding; The material of stainless steel thick plate is 00Cr18Ni10.
2. the submerged-arc welding method of super-low carbon stainless steel slab according to claim 1, is characterized in that: when thickness of slab is 20mm, and adopt welding by both sides, heat input is 260-280 KJ/dm, and interlayer temperature is 1200-1450 DEG C.
3. the submerged-arc welding method of super-low carbon stainless steel slab according to claim 1, is characterized in that: when thickness of slab is 15mm, and adopt welding by both sides, heat input is 220-250 KJ/dm, and interlayer temperature is 1200-1400 DEG C.
4. the submerged-arc welding method of super-low carbon stainless steel slab according to claim 1, is characterized in that: when thickness of slab is 10mm, and adopt single welding, heat input is 150-180 KJ/dm, and interlayer temperature is 1200-1300 DEG C.
5. the submerged-arc welding method of super-low carbon stainless steel slab according to claim 1, is characterized in that: when thickness of slab is 5mm, and adopt single welding, heat input is 100-120 KJ/dm, and interlayer temperature is 1200-1300 DEG C.
6. the submerged-arc welding method of super-low carbon stainless steel slab according to claim 1, is characterized in that: when thickness of slab is 2mm, and adopt single welding, heat input is 80-100 KJ/dm, and interlayer temperature is 1200-1300 DEG C.
7. the submerged-arc welding method of super-low carbon stainless steel slab according to claim 1, is characterized in that: when thickness of slab is greater than 20mm, and adopt welding by both sides, heat input is 280-380 KJ/dm, and interlayer temperature is 1200-1500 DEG C.
8. the submerged-arc welding method of super-low carbon stainless steel slab according to claim 1, is characterized in that: when thickness of slab is less than 2mm, and adopt single welding, heat input is 20-80 KJ/dm, and interlayer temperature is 1200-1300 DEG C.
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| CN201210145587.6A CN102632330B (en) | 2012-05-11 | 2012-05-11 | Submerged arc welding method of ultralow carbon stainless steel thick plate |
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| CN201210145587.6A CN102632330B (en) | 2012-05-11 | 2012-05-11 | Submerged arc welding method of ultralow carbon stainless steel thick plate |
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| CN102632330B true CN102632330B (en) | 2015-07-22 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462196A (en) * | 2008-12-31 | 2009-06-24 | 重庆大学 | Method and equipment for electromagnetic composite double-face submerged arc welding of diphase stainless steel thick plate |
| CN101913012A (en) * | 2010-08-11 | 2010-12-15 | 南京宝色股份公司 | Two phase stainless steel submerged-arc welding SAW welding procedure |
| CN102179609A (en) * | 2011-05-17 | 2011-09-14 | 烟台台海玛努尔核电设备股份有限公司 | Submerged automatic arc welding process for nuclear power main pipeline |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462196A (en) * | 2008-12-31 | 2009-06-24 | 重庆大学 | Method and equipment for electromagnetic composite double-face submerged arc welding of diphase stainless steel thick plate |
| CN101913012A (en) * | 2010-08-11 | 2010-12-15 | 南京宝色股份公司 | Two phase stainless steel submerged-arc welding SAW welding procedure |
| CN102179609A (en) * | 2011-05-17 | 2011-09-14 | 烟台台海玛努尔核电设备股份有限公司 | Submerged automatic arc welding process for nuclear power main pipeline |
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Denomination of invention: Submerged arc welding method of ultralow carbon stainless steel thick plate Effective date of registration: 20160122 Granted publication date: 20150722 Pledgee: China Minsheng Banking Corp Chongqing branch Pledgor: Chongqing Kunyu Lithium Co., Ltd. Registration number: 2016500000001 |
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Denomination of invention: Submerged arc welding method of ultralow carbon stainless steel thick plate Effective date of registration: 20170331 Granted publication date: 20150722 Pledgee: Chongqing Tianqi Lithium Industry Co., Ltd. Pledgor: Chongqing Kunyu Lithium Co., Ltd. Registration number: 2017980000096 |
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Effective date of registration: 20180202 Address after: 22 No. 404100 Chongqing Industrial Park in Tongliang, long an Avenue (East Street Office) Patentee after: Chongqing Tianqi Lithium Industry Co., Ltd. Address before: 402466 Chongqing city Rongchang County Street Anfu Patentee before: Chongqing Kunyu Lithium Co., Ltd. |