CN115319244A - Dissimilar steel welding process - Google Patents
Dissimilar steel welding process Download PDFInfo
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- CN115319244A CN115319244A CN202211076559.3A CN202211076559A CN115319244A CN 115319244 A CN115319244 A CN 115319244A CN 202211076559 A CN202211076559 A CN 202211076559A CN 115319244 A CN115319244 A CN 115319244A
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- Prior art keywords
- welding
- steel
- q690dr
- 12cr2mo1vr
- surfacing
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- 238000003466 welding Methods 0.000 title claims abstract description 71
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 55
- 239000010959 steel Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000000956 alloy Substances 0.000 claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 18
- 238000000137 annealing Methods 0.000 claims abstract description 17
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000004321 preservation Methods 0.000 claims abstract description 10
- 229910052786 argon Inorganic materials 0.000 claims abstract description 8
- 238000007778 shielded metal arc welding Methods 0.000 claims abstract description 8
- 239000010953 base metal Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 18
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims 1
- 239000010937 tungsten Substances 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 description 34
- 229910052739 hydrogen Inorganic materials 0.000 description 34
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 33
- 238000003860 storage Methods 0.000 description 24
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000005242 forging Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- NGONBPOYDYSZDR-UHFFFAOYSA-N [Ar].[W] Chemical compound [Ar].[W] NGONBPOYDYSZDR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
- C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a dissimilar steel welding process of Q690DR steel and 12Cr2Mo1VR steel. The method comprises the following steps: 1) Surfacing of a nickel-based alloy layer: respectively overlaying a nickel-based alloy layer at the welding grooves of Q690DR steel and 12Cr2Mo1VR steel; 2) Heat treatment of base metal: annealing the Q690DR steel after surfacing, wherein the annealing temperature is 560-600 ℃, and the heat preservation time is 2-4 h; annealing the 12Cr2Mo1VR steel after surfacing, wherein the annealing temperature is 660-720 ℃, and the heat preservation time is 2-4 h; 3) Welding: and performing welding by adopting argon tungsten-arc welding and shielded metal arc welding. The welding process ensures good weldability of Q690DR and 12Cr2Mo1VR dissimilar steel in the welding process, avoids the temper brittleness of the Q690DR steel, and effectively reduces the post-welding stress of the 12Cr2Mo1VR steel.
Description
Technical Field
The invention relates to the field of dissimilar steel welding of pressure containers in the fields of petrochemical equipment and hydrogen energy, in particular to a dissimilar steel welding process.
Background
The hydrogen energy industrial chain can be integrally divided into three links of hydrogen energy preparation, hydrogen energy storage and transportation and hydrogen energy application, wherein the storage and transportation link is the key for efficiently utilizing the hydrogen energy and is an important link influencing the large-scale commercial application of the hydrogen energy; the hydrogen storage mainly comprises three modes of gaseous hydrogen storage, liquid hydrogen storage and solid hydrogen storage. At present, low-temperature liquid hydrogen storage is applied in the fields of aerospace and the like, organic liquid hydrogen storage and solid hydrogen storage are already in a demonstration stage, and large-scale gaseous hydrogen storage is only limited to 10 MPa. The high-pressure gaseous hydrogen storage has the advantages of high hydrogen charging and discharging speed, simple container structure, easy industrial popularization and application and the like, and is a main hydrogen storage mode in devices such as a hydrogen filling station, electrolytic hydrogen field storage and the like in the future. However, higher pressures place higher demands on the design and materials of hydrogen storage tanks due to the ease of leakage, flammability, explosiveness of hydrogen, and the pressure and filling hazards faced by high pressure hydrogen storage tanks.
The Q690DR steel sheet for high pressure hydrogen storage is a high strength, high toughness, high hydrogen resistance steel sheet developed by the recent domestic famous steel enterprises and research institutes in China, and is produced by Nanjing Steel group Co., ltd.
The existing Q690DR low alloy quenched and tempered high-strength steel large-thickness forging has high manufacturing difficulty, so that the performance still cannot meet the minimum requirement of technical conditions, and the production and the manufacturing of high-pressure hydrogen storage tank products are influenced.
Disclosure of Invention
In order to solve the technical problems that the manufacturing difficulty of the large-thickness forged piece of the existing Q690DR low-alloy quenched and tempered high-strength steel is large, and the performance cannot meet the minimum requirement of the technical conditions, the invention uses a 12Cr2Mo1VR forged piece material to replace the Q690DR forged piece material in the manufacturing of the high-pressure hydrogen storage spherical tank, thereby providing a dissimilar steel welding process.
The invention provides a dissimilar steel welding process of Q690DR steel and 12Cr2Mo1VR steel, which comprises the following steps:
1) Surfacing of a nickel-based alloy layer: respectively overlaying a nickel-based alloy layer at the welding grooves of Q690DR steel and 12Cr2Mo1VR steel;
2) Heat treatment of base metal: annealing the Q690DR steel after surfacing, wherein the annealing temperature is 560-600 ℃, and preferably 575-585 ℃; the heat preservation time is 2 to 4 hours (h), preferably 2.5 to 3.5h; annealing the 12Cr2Mo1VR steel after surfacing, wherein the annealing temperature is 660-720 ℃, and preferably 680-700 ℃; the heat preservation time is 2 to 4 hours, preferably 2.5 to 3.5 hours;
3) Welding: performing welding by adopting argon tungsten-arc welding and shielded metal arc welding, controlling the welding current of the shielded metal arc welding to be 130-190A, the welding voltage to be 20-26V, and the welding speed to be 160-200 mm/min; controlling the welding current of the argon tungsten-arc welding to be 130-170A, the welding voltage to be 13-19V and the welding speed to be 70-120 mm/min.
The method of the invention has the following beneficial effects:
1) The Q690DR steel forging can be replaced by the 12Cr2Mo1VR steel forging, so that the technical problems that the Q690DR low-alloy quenched and tempered high-strength steel large-thickness forging is difficult to manufacture and the performance cannot meet the minimum requirement of technical conditions are effectively solved, and the production and the manufacture of the high-pressure hydrogen storage tube are facilitated.
2) The welding process ensures good weldability of the Q690DR and 12Cr2Mo1VR dissimilar steel welding process, avoids the temper brittleness of the Q690DR steel, and effectively reduces the post-welding stress of the 12Cr2Mo1VR steel.
Drawings
FIG. 1 is a schematic view of a welding groove structure used in the welding process of the present invention.
In the figure: 1-Q690DR steel, 2-12Cr2Mo1VR steel, and a 3-nickel-based alloy layer.
Detailed Description
The present invention will be further described with reference to the following drawings and examples.
The 12Cr2Mo1VR forging material meets the technical condition requirements of a high-pressure hydrogen storage tank, and the key points of welding and heat treatment of the Q690DR and the 12Cr2Mo1VR material are as follows:
(1) The Q690DR material hydrogen storage spherical tank needs to be annealed for 3h at 580 ℃, but the 12Cr2Mo1VR material can gradually embrittle the steel when working for a long time in the temperature range of 370-565 ℃, and the tempering brittleness exists. This phenomenon is classified into low temperature, medium temperature and high temperature temper brittleness according to temperature, wherein the low temperature and medium temperature temper brittleness can be recovered or improved by heat treatment, and the influence of the high temperature temper brittleness on the material is difficult to recover. Since the 580 ℃ annealing temperature is very close to the upper limit of the temper brittleness transition temperature, the 12Cr2Mo1VR forged joint pipe is not suitable for being finally retreated together with the hydrogen storage spherical tank. The nickel-based alloy is overlaid on the 12Cr2Mo1VR forge piece connecting pipe and the hydrogen storage ball tank connecting pipe, heat treatment is respectively carried out, and finally, the nickel-based welding material is adopted for welding.
(2) The strength of 12Cr2Mo1VR is about 750-760 Mpa in a supply state, and the requirement that the tensile strength of a connecting pipe forge piece is more than or equal to 740Mpa in the technical condition of the hydrogen storage spherical tank can be met; after the forging is subjected to MIN.PWHT die welding heat treatment, the strength of the forging is reduced by 80MPa to 660-670 MPa, and the strength is lower. Stress relief heat treatment is required for the vanadium-added steel welding due to the delayed crack tendency of the material, but the heat treatment time after the groove surfacing of the vanadium-added steel forge piece is optimized and reduced to about 4 hours in consideration of the good-30 ℃ impact value in a supply state and the good performance of a step cold test under MIN.
(3) The nickel-based alloy welding material is ENiCrMo-3, the typical tensile strength value is about 795Mpa, and the strength is between Q690DR and 12Cr2Mo1VR, which is more suitable.
Fig. 1 is a schematic view of a welding groove structure adopted in the welding process of the present invention, in which Q690DR steel 1, 12Cr2Mo1VR steel 2 and a nickel-based alloy layer 3 are shown, and the nickel-based alloy layer 3 is a weld overlay.
Examples
In this embodiment, welding a hydrogen storage test tank device is taken as an example, and mainly includes the following steps:
1) Preparation of parent material
(1) The material Q690DR, specification 72X 130X 800mm;
(2) the material is 12Cr1MoVR with the specification of 72 multiplied by 130 multiplied by 800mm;
2) Solder material preparation
Electrode ENiCrMo-3
Argon arc welding wire ERNiCrMo-3
3) And (3) welding sequence:
(1) surfacing of a nickel-based alloy layer: surfacing NiCrMo-3 nickel-based alloy at the Q690DR and 12Cr2Mo1VR crevasses, wherein the thickness of the nickel-based alloy layer is 6-8 mm, performing 100% PT detection after surfacing is completed, and ensuring that the grade I is qualified;
(2) heat treatment of base metal: wherein the annealing temperature after Q690DR surfacing is 580 ℃ multiplied by 3h; the annealing temperature after the 12Cr2Mo1VR surfacing is 705 +/-14 ℃, the heat preservation time is respectively subjected to 2-4 h tests, the best match between the strength and the-40 ℃ impact value is searched, and the heat preservation time is determined.
(3) Welding: the test panel welding method comprises argon tungsten arc welding and shielded metal arc welding, and the welding specification is shown in table 1:
TABLE 1 weld Specifications
4) Detecting items
The welding joint test items and test values are shown in table 2:
TABLE 2 weld joint test items and test values
Claims (7)
1. A dissimilar steel welding process of Q690DR steel and 12Cr2Mo1VR steel is characterized by comprising the following steps:
1) Surfacing of a nickel-based alloy layer: surfacing nickel-based alloy layers on welding grooves of Q690DR steel and 12Cr2Mo1VR steel respectively;
2) Heat treatment of base metal: annealing the Q690DR steel after surfacing, wherein the annealing temperature is 560-600 ℃, and the heat preservation time is 2-4 h; annealing the 12Cr2Mo1VR steel after surfacing, wherein the annealing temperature is 660-720 ℃, and the heat preservation time is 2-4 h;
3) Welding: performing welding by adopting argon tungsten-arc welding and shielded metal arc welding, controlling the welding current of the shielded metal arc welding to be 130-190A, the welding voltage to be 20-26V, and the welding speed to be 160-200 mm/min; controlling the welding current of the argon tungsten-arc welding to be 130-170A, the welding voltage to be 13-19V and the welding speed to be 70-120 mm/min.
2. The dissimilar steel welding process according to claim 1, wherein: the annealing temperature of the Q690DR steel is 575-585 ℃, and the heat preservation time is 2.5-3.5 h.
3. A dissimilar steel welding process according to claim 1, characterized in that: the annealing temperature of the 12Cr2Mo1VR steel is 680-700 ℃, and the heat preservation time is 2.5-3.5 h.
4. A dissimilar steel welding process according to any one of claims 1 to 3, characterized in that: the thickness of the nickel-based alloy layer is 6-8 mm.
5. A dissimilar steel welding process according to any one of claims 1 to 3, characterized in that: the welding material adopted by the tungsten electrode argon arc welding is ERNiCrMo-3 argon arc welding wire.
6. A dissimilar steel welding process according to any one of claims 1 to 3, characterized in that: the welding material adopted by the shielded metal arc welding is ENiCrMo-3 welding rod.
7. The dissimilar steel welding process according to claim 5, wherein: the welding material adopted by the shielded metal arc welding is ENiCrMo-3 welding rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211076559.3A CN115319244A (en) | 2022-09-05 | 2022-09-05 | Dissimilar steel welding process |
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| CN202211076559.3A CN115319244A (en) | 2022-09-05 | 2022-09-05 | Dissimilar steel welding process |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2799401A1 (en) * | 1999-10-07 | 2001-04-13 | Framatome Sa | Weld protection and renewal process for heterogeneous joint in steel pipes used in nuclear pressurized water reactor comprises creating heterogeneous weld and applying thick layer of nickel-based alloy to pipe end inner surfaces |
| CN101087671A (en) * | 2004-10-22 | 2007-12-12 | 电力研究所有限公司 | Methods for extending the life of alloy steel welded joints by elimination and reduction of the HAZ |
| CN102773581A (en) * | 2012-08-10 | 2012-11-14 | 安徽应流机电股份有限公司 | Welding process of pearlite heat-resistant steel and ordinary carbon steel |
| JP2013000751A (en) * | 2011-06-13 | 2013-01-07 | Hitachi-Ge Nuclear Energy Ltd | Butt welding method of steel member |
| CN103894711A (en) * | 2014-03-14 | 2014-07-02 | 东方电气集团东方锅炉股份有限公司 | Dissimilar material welding method for processing temperature difference at high temperature |
| CN105414782A (en) * | 2015-11-20 | 2016-03-23 | 东方电气集团东方锅炉股份有限公司 | Isolated layer surfacing method of dissimilar steel welding joint |
| CN114939709A (en) * | 2022-05-05 | 2022-08-26 | 包头钢铁（集团）有限责任公司 | Welding method of high-strength steel Q690D for engineering machinery |
| CN114985880A (en) * | 2022-06-14 | 2022-09-02 | 沈阳鼓风机集团核电泵业有限公司 | Method for welding austenitic stainless steel part and carbon steel part |
-
2022
- 2022-09-05 CN CN202211076559.3A patent/CN115319244A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2799401A1 (en) * | 1999-10-07 | 2001-04-13 | Framatome Sa | Weld protection and renewal process for heterogeneous joint in steel pipes used in nuclear pressurized water reactor comprises creating heterogeneous weld and applying thick layer of nickel-based alloy to pipe end inner surfaces |
| CN101087671A (en) * | 2004-10-22 | 2007-12-12 | 电力研究所有限公司 | Methods for extending the life of alloy steel welded joints by elimination and reduction of the HAZ |
| JP2013000751A (en) * | 2011-06-13 | 2013-01-07 | Hitachi-Ge Nuclear Energy Ltd | Butt welding method of steel member |
| CN102773581A (en) * | 2012-08-10 | 2012-11-14 | 安徽应流机电股份有限公司 | Welding process of pearlite heat-resistant steel and ordinary carbon steel |
| CN103894711A (en) * | 2014-03-14 | 2014-07-02 | 东方电气集团东方锅炉股份有限公司 | Dissimilar material welding method for processing temperature difference at high temperature |
| CN105414782A (en) * | 2015-11-20 | 2016-03-23 | 东方电气集团东方锅炉股份有限公司 | Isolated layer surfacing method of dissimilar steel welding joint |
| CN114939709A (en) * | 2022-05-05 | 2022-08-26 | 包头钢铁（集团）有限责任公司 | Welding method of high-strength steel Q690D for engineering machinery |
| CN114985880A (en) * | 2022-06-14 | 2022-09-02 | 沈阳鼓风机集团核电泵业有限公司 | Method for welding austenitic stainless steel part and carbon steel part |
Non-Patent Citations (1)
| Title |
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| 毛新爱;: "12Cr2Mo1与TP321异种焊接性分析及实践", 安装, no. 04, pages 48 - 49 * |
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Application publication date: 20221111 |