CN204735854U - A fragility processing apparatus for 400 serial austenite weldings - Google Patents
A fragility processing apparatus for 400 serial austenite weldings Download PDFInfo
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- 238000003466 welding Methods 0.000 title claims abstract description 86
- 229910001566 austenite Inorganic materials 0.000 title abstract 2
- 230000007246 mechanism Effects 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 36
- 238000000137 annealing Methods 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000005057 refrigeration Methods 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 10
- 230000006698 induction Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 33
- 230000008569 process Effects 0.000 abstract description 23
- 238000007669 thermal treatment Methods 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 description 22
- 230000008025 crystallization Effects 0.000 description 22
- 238000005096 rolling process Methods 0.000 description 15
- 238000009490 roller compaction Methods 0.000 description 13
- 238000009792 diffusion process Methods 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 11
- 230000007480 spreading Effects 0.000 description 11
- 238000003892 spreading Methods 0.000 description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 10
- 239000001257 hydrogen Substances 0.000 description 10
- 229910052739 hydrogen Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 238000005496 tempering Methods 0.000 description 9
- 238000005476 soldering Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 230000004807 localization Effects 0.000 description 6
- 238000005336 cracking Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a fragility processing apparatus for 400 serial austenite weldings, include the auxiliary engine dolly and arrange in proper order flourishing water tank, annealing mechanism and circulating water refrigerator on the auxiliary engine dolly, in the flourishing water tank with correspond on the auxiliary engine dolly the position of flourishing water tank top is equipped with the shower nozzle of cooling rapidly that is used for cooling off rapidly the regional positive and negative of welding of online belted steel respectively, cool off rapidly the shower nozzle with the delivery outlet intercommunication of circulating water refrigerator, flourishing water tank with the input port intercommunication of circulating water refrigerator. It is special to 400 serial stainless steels, establish fragility processing apparatus through adding on welding processes's lower step of process position to cooperate thermal treatment, can eliminate the fragility of 400 serial stainless steels like this, thereby furtherly has improved the plasticity and the extensibility of 400 serial stainless steels. Be applicable to various welding machines.
Description
Technical field
The utility model relates to welding field, particularly a kind of fragility treating apparatus for 400 series stainless steel welding.
Background technology
Along with China's automobile, bridge, building, household electrical appliances etc. iron and steel had to the fast development of the industry of wilderness demand, the yield and quality of iron and steel enterprise to the steel of high standard and high performance-price ratio requires also more and more higher.At present, most domestic iron and steel enterprise moves towards the trend of product transformation, equipment upgrading gradually.Therefore, the welding of special rolling-mill section is the significant problem that we are about to face, but utilize common laser welder and welding procedure cannot meet special substance steel grade, particularly the welding requirements of 400 series stainless steels, high strength alloy steel and high phosphoretic steel etc. at all, particularly:
1, because laser weld is transmitted in by the laser beam of high-energy-density on the band steel gap of having spliced, welded piece is heated instantaneously to 1200 ~ 1400 DEG C and realizes rapid welding, so this welding process can make welding region temperature suddenly rise, decline, weld dimensions is caused to form quenching, and irregular thick crystallization (particularly 400 series stainless steels, high strength alloy steel and high phosphoretic steel etc.) obviously can be there is in the weld dimensions after quenching, like this, weld dimensions just there will be fracture once stressed;
2, because welding region is larger with temperature difference during welding before welding, so easily produce welding stress, simultaneously, because weld strain speed is higher, so the hydrogen induced cracking easily producing weld crack and cause because of the effusion of diffusible hydrogen in weld metal, and the degree of hardening of weld dimensions is higher.
Above two problems is solved after large quantifier elimination and experiment eventually in our company, but be stainless steel for 400, because 400 is that stainless steel has himself feature (ferrite and iron element ~ Ovshinsky two-phase body), therefore, the weld seam of 400 series stainless steels, when welding, still can be influenced by heat because of metal structure (temperature decline) and form weld seam fragility.
Summary of the invention
The purpose of this utility model is the deficiency in order to overcome above-mentioned background technology, provides a kind of fragility treating apparatus for 400 series stainless steel welding of weld seam good-extensibility.
In order to realize above object, a kind of fragility treating apparatus for 400 series stainless steel welding that the utility model provides, comprise subsidiary engine dolly and be arranged in the water box on described subsidiary engine dolly successively, annealing mechanism and recirculated water refrigeration machine, position in described water box and on described subsidiary engine dolly above corresponding described water box is respectively equipped with the cooling spray rapidly for cooling the welding region positive and negative at tape steel rapidly, described cooling spray is rapidly communicated with the delivery outlet of described recirculated water refrigeration machine, described water box is communicated with the input port of described recirculated water refrigeration machine.Special for 400 series stainless steels, by adding fragility treating apparatus in the lower step procedure position of welding sequence, and coordinating heat treatment, the fragility of 400 series stainless steels can be eliminated like this, thus further increasing plasticity and the extensibility of 400 series stainless steels.
In such scheme, the heating-up temperature of described annealing mechanism is 500 ~ 650 DEG C.
In such scheme, described annealing mechanism adopts high frequency induction heater.
The beneficial effect that the technical scheme that the utility model provides is brought is:
Special for 400 series stainless steels, by adding fragility treating apparatus in the lower step procedure position of welding sequence, and coordinating heat treatment, the fragility of 400 series stainless steels can be eliminated like this, thus further increasing plasticity and the extensibility of 400 series stainless steels.
The utility model has the features such as structure is simple, technique simple, the good-extensibility of the good rear weld dimensions of welding.
Accompanying drawing explanation
Fig. 1 is the structural representation of welding portion in the present invention;
Fig. 2 is the structural representation of subsidiary engine part in the present invention;
Fig. 3 is the side-looking structural representation of Fig. 2.
In figure, welding tractor 1, shear 2, laser soldering device 3, Roller compaction device 4, preheating device 5, annealing device 6, normalizing mechanism 6a, a normalizing mechanism 6a1, secondary normalizing mechanism 6a2, tempering mechanism 6b, fragility treating apparatus 7, subsidiary engine dolly 7a, water box 7b, annealing mechanism 7c, recirculated water refrigeration machine 7d, rapidly cooling spray 7e.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
This device belongs to the subsidiary engine part (i.e. label parts 7) of welding machine, and this device, when reality uses, need form complete welding machine together with welding portion (i.e. label parts 1 ~ 6); Accordingly, the welding procedure of this welding machine comprises welding sequence and fragility treatment process two large divisions.Following examples are combinations of this device and laser welder, and certainly, this device also can combine with the welding machine such as resistance welder, argon arc welding machine.
Embodiment 1:
The heat treated laser welder of a kind of band on-line continuous weld seam, comprise welding tractor 1, and the shear 2 be arranged on successively on described welding tractor 1, laser soldering device 3 and Roller compaction device 4, on described welding tractor 1, the position in corresponding described laser soldering device 3 front is provided with the preheating device 5 that can carry out on-line continuous intensification preheating to welding region, described preheating device 5 is arranged between described shear 2 and laser soldering device 3, on described welding tractor 1, the position at corresponding described laser soldering device 3 rear is provided with and can carries out the heat treated annealing device 6 of on-line continuous weld seam in butt welded seam region.Before welding, intensification preheating is carried out to welding region, like this, both welding stress can be reduced, weld strain speed can be reduced again, be conducive to the effusion of avoiding producing diffusible hydrogen in weld crack and weld metal, avoid producing hydrogen induced cracking, simultaneously, also the degree of hardening of weld dimensions can be reduced, and, also there is booster action to the cooling velocity slowing down postwelding; And heat-treated by postwelding butt welded seam region, like this, thick crystallization diffusion and the refinement of weld dimensions can be made, thus greatly increase the extensibility of weld seam.
Above-mentioned annealing device 6 comprises and can carry out the normalizing mechanism 6a of on-line continuous weld seam normalized treatment to described welded seam area and can carry out the tempering mechanism 6b of on-line continuous weld seam temper to described welded seam area, described normalizing mechanism 6a is arranged between described laser soldering device 3 and Roller compaction device 4, and described tempering mechanism 6b is arranged in described Roller compaction device 4 rear.First, carry out normalized treatment by postwelding butt welded seam region, like this, thick crystallization diffusion and the refinement of weld dimensions can be made, thus greatly increase the extensibility of weld seam; Then, the crystallization after diffusion and refinement becomes more closely after Roller compaction device 4 spreading, thus further improves the extensibility of weld seam; Finally, welded seam area, after temper, by the refinement crystal crystallization again that Roller compaction device 4 spreading destroys, thus further increasing the extensibility of weld seam again.Described normalizing mechanism 6a comprises again a normalizing mechanism 6a1 and secondary normalizing mechanism 6a2, and described secondary normalizing mechanism 6a2 is arranged in a described normalizing mechanism 6a1 rear.Carry out a normalizing by postwelding butt welded seam region, the thick crystalline solid of weld dimensions can be made to be spread, and make it be evenly distributed, keep weld dimensions uniform temperature to be that secondary normalizing is prepared simultaneously; Followed by secondary normalizing, the refinement of weld dimensions texture can be made, simultaneously through double normalizing, the strip welded seam area temperature making fabric width >=1000mm relatively evenly, balance, thus create a further reduction the degree of hardening of weld dimensions, improve metal extensibility.
The heating-up temperature of above-mentioned preheating device 5 is 100 ~ 200 DEG C, and the heating-up temperature of a described normalizing mechanism 6a1 is 600 ~ 800 DEG C, and the heating-up temperature of described secondary normalizing mechanism 6a2 is 600 ~ 800 DEG C, and the heating-up temperature of described tempering mechanism 6b is 200 ~ 300 DEG C.By the band steel according to concrete different model, the different interval preheat temperature of optimum choice, normalizing temperature, secondary normalizing temperature and a temperature, further can improve the extensibility of weld seam.Described preheating device 5, normalizing mechanism 6a1, a secondary normalizing mechanism 6a2 and tempering mechanism 6b all adopt high frequency induction heater, and the end face of the rolling wheel of described Roller compaction device 4 is circular arc.Certainly, also other heaters can be adopted.By adopting end face to be the rolling wheel of circular arc, force localization when rolling can be made at welded seam area, thus the crystallization after normalizing can better be destroyed, making it tightr.
The lower step operation of the welding sequence of above-mentioned laser welder is fragility treatment process, the position of this fragility treatment process is provided with fragility treating apparatus 7, described fragility treating apparatus 7 comprises subsidiary engine dolly 7a and is arranged in the water box 7b on described subsidiary engine dolly 7a successively, annealing mechanism 7c and recirculated water refrigeration machine 7d, position in described water box 7b and on described subsidiary engine dolly 7a above corresponding described water box 7b is respectively equipped with the 7e of cooling spray rapidly for cooling the welding region positive and negative at tape steel rapidly, the described 7e of cooling spray is rapidly communicated with the delivery outlet of described recirculated water refrigeration machine 7d, described water box 7b is communicated with the input port of described recirculated water refrigeration machine 7d, the heating-up temperature of described annealing mechanism 7c is 500 ~ 650 DEG C, described annealing mechanism 7c adopts high frequency induction heater.Special for 400 series stainless steels, by adding fragility treating apparatus 7 in the lower step procedure position of welding sequence, and substitute temper with fragility process, the fragility of 400 series stainless steels can be eliminated like this, thus further increasing plasticity and the extensibility of 400 series stainless steels.
The present embodiment is by carrying out intensification preheating to welding region before weldering, like this, both welding stress can be reduced, weld strain speed can be reduced again, be conducive to the effusion of avoiding producing diffusible hydrogen in weld crack and weld metal, avoid producing hydrogen induced cracking, simultaneously, also the degree of hardening of weld dimensions can be reduced, and, also there is booster action to the cooling velocity slowing down postwelding; And heat-treated by postwelding butt welded seam region, like this, thick crystallization diffusion and the refinement of weld dimensions can be made, thus greatly increase the extensibility of weld seam; First, carry out normalized treatment by postwelding butt welded seam region, like this, thick crystallization diffusion and the refinement of weld dimensions can be made, thus greatly increase the extensibility of weld seam; Then, the crystallization after diffusion and refinement becomes more closely after Roller compaction device 4 spreading, thus further improves the extensibility of weld seam; Finally, welded seam area, after temper, by the refinement crystal crystallization again that Roller compaction device 4 spreading destroys, thus further increasing the extensibility of weld seam again; Carry out a normalizing by postwelding butt welded seam region, the thick crystalline solid of weld dimensions can be made to be spread, and make it be evenly distributed, keep weld dimensions uniform temperature to be that secondary normalizing is prepared simultaneously; Followed by secondary normalizing, the refinement of weld dimensions texture can be made, simultaneously through double normalizing, the strip welded seam area temperature making fabric width >=1000mm relatively evenly, balance, thus create a further reduction the degree of hardening of weld dimensions, improve metal extensibility; By the band steel according to concrete different model, the different interval preheat temperature of optimum choice, normalizing temperature, secondary normalizing temperature and a temperature, further can improve the extensibility of weld seam; By adopting end face to be the rolling wheel of circular arc, force localization when rolling can be made at welded seam area, thus the crystallization after normalizing can better be destroyed, making it tightr; Special for 400 series stainless steels, by adding fragility treating apparatus 7 in the lower step procedure position of welding sequence, and substitute temper with fragility process, the fragility of 400 series stainless steels can be eliminated like this, thus further increasing plasticity and the extensibility of 400 series stainless steels.
Embodiment 2 (for high strength alloy steel and high phosphoretic steel etc., certainly, 400 series stainless steels also can adopt the scheme of the present embodiment, but it easily produces fragility):
The heat treated laser welding process of a kind of band on-line continuous weld seam, comprises the following steps:
1) on the shearing station of welding sequence, shearing piece is carried out by shear 2 at tape steel;
2) shear after piece, the described welding region at tape steel carries out on-line continuous intensification by preheating device 5 and is preheated to 100 ~ 200 DEG C on the preheating station of described welding sequence;
3), after intensification preheating, describedly to be welded by laser soldering device 3 on the welding post of described welding sequence at tape steel;
4a1) after welding, the described welded seam area at tape steel carries out the normalizing of on-line continuous weld seam by a normalizing mechanism 6a1 on a normalizing station of described welding sequence, and this normalizing temperature is 600 ~ 800 DEG C;
4a2) after a normalizing, the described welded seam area at tape steel carries out on-line continuous weld seam secondary normalizing by secondary normalizing mechanism 6a2 on the secondary normalizing station of described welding sequence, and this secondary normalizing temperature is 600 ~ 800 DEG C;
4b) after normalized treatment, the described welded seam area at tape steel carries out the spreading of on-line continuous weld seam by Roller compaction device 4 on the spreading station of described welding sequence;
4c) after spreading, the described welded seam area at tape steel carries out on-line continuous weld seam temper by tempering mechanism 6b on the tempering station of described welding sequence, and this temper temperature is 200 ~ 300 DEG C.
Above-mentioned preheating device 5, normalizing mechanism 6a1, a secondary normalizing mechanism 6a2 and tempering mechanism 6b all adopt high frequency induction heater, and the end face of the rolling wheel of described Roller compaction device 4 is circular arc.Certainly, also other heaters can be adopted.By adopting end face to be the rolling wheel of circular arc, force localization when rolling can be made at welded seam area, thus the crystallization after normalizing can better be destroyed, making it tightr.
The present embodiment by adding the preheating station that can carry out intensification preheating to the welding region at tape steel before welding post, like this, both welding stress can be reduced, weld strain speed can be reduced again, be conducive to the effusion of avoiding producing diffusible hydrogen in weld crack and weld metal, avoid producing hydrogen induced cracking, simultaneously, also the degree of hardening of weld dimensions can be reduced, and, also there is booster action to the cooling velocity slowing down postwelding; And by adding the heat treatment station can heat-treated the welded seam area at tape steel after welding post, like this, thick crystallization diffusion and the refinement of weld dimensions can be made, thus greatly increase the extensibility of weld seam; First, butt welded seam region adopts the heat treatment of normalizing process, like this, can make thick crystallization diffusion and the refinement of weld dimensions, thus greatly increase the extensibility of weld seam; Then, roll milling craft is adopted to the crystallization after diffusion and refinement, make it become more tight, thus further improve the extensibility of weld seam; Finally, butt welded seam region adopts the heat treatment of tempering process, makes the refinement crystal crystallization again destroyed by spreading, thus further increasing the extensibility of weld seam again; First adopted the heat treatment of a normalizing by postwelding butt welded seam region, the thick crystalline solid of weld dimensions can be made to be spread, and make it be evenly distributed, keep weld dimensions uniform temperature to be that secondary normalizing is prepared simultaneously; The heat treatment of secondary normalizing is adopted followed by butt welded seam region, the refinement of weld dimensions texture can be made, simultaneously through double normalizing, the strip welded seam area temperature making fabric width >=1000mm relatively evenly, balance, thus create a further reduction the degree of hardening of weld dimensions, improve metal extensibility; By the band steel according to concrete different model, the different interval preheat temperature of optimum choice, normalizing temperature, secondary normalizing temperature and a temperature, further can improve the extensibility of weld seam; By adopting end face to be the rolling wheel of circular arc, force localization when rolling can be made at welded seam area, thus the crystallization after normalizing can better be destroyed, making it tightr.
Embodiment 3 (special for 400 series stainless steels):
The heat treated laser welding process of a kind of band on-line continuous weld seam, comprises the following steps:
1) on the shearing station of welding sequence, shearing piece is carried out by shear 2 at tape steel;
2) shear after piece, the described welding region at tape steel carries out on-line continuous intensification by preheating device 5 and is preheated to 100 ~ 200 DEG C on the preheating station of described welding sequence;
3), after intensification preheating, describedly to be welded by laser soldering device 3 on the welding post of described welding sequence at tape steel;
4a1) after welding, the described welded seam area at tape steel carries out the normalizing of on-line continuous weld seam by a normalizing mechanism 6a1 on a normalizing station of described welding sequence, and this normalizing temperature is 600 ~ 800 DEG C;
4a2) after a normalizing, the described welded seam area at tape steel carries out on-line continuous weld seam secondary normalizing by secondary normalizing mechanism 6a2 on the secondary normalizing station of described welding sequence, and this secondary normalizing temperature is 600 ~ 800 DEG C;
4b) after normalized treatment, the described welded seam area at tape steel carries out the spreading of on-line continuous weld seam by Roller compaction device 4 on the spreading station of described welding sequence;
4c) after spreading, the described welded seam area at tape steel is down to normal temperature rapidly by the described 7e of cooling spray rapidly on the station of cooling rapidly of described fragility treatment process;
Be down to the described welded seam area at tape steel after normal temperature and carry out annealing in process by described annealing mechanism 7c on the annealing station of described fragility treatment process, this annealing temperature is 500 ~ 650 DEG C;
The described welded seam area at tape steel after annealing is down to normal temperature rapidly by the described 7e of cooling spray rapidly again on the station of cooling rapidly of described fragility treatment process.
Particularly, fragility treating apparatus 7 on the position of above-mentioned fragility treatment process comprises subsidiary engine dolly 7a and the water box 7b, the annealing mechanism 7c that are arranged in successively on described subsidiary engine dolly 7a and recirculated water refrigeration machine 7d, position in described water box 7b and on described subsidiary engine dolly 7a above corresponding described water box 7b is respectively equipped with the 7e of cooling spray rapidly for cooling the welding region positive and negative at tape steel rapidly, the described 7e of cooling spray is rapidly communicated with the delivery outlet of described recirculated water refrigeration machine 7d, and described water box 7b is communicated with the input port of described recirculated water refrigeration machine 7d.During initial position, weld seam is positioned at above described water box 7b, after first time cools rapidly, subsidiary engine dolly 7a is moved to the left, annealing mechanism 7c is positioned at below weld seam and carries out annealing in process, after annealing, subsidiary engine dolly 7a return to the right, make water box 7b get back to below weld seam, finally carry out second time again and cool rapidly.
Above-mentioned preheating device 5, normalizing mechanism 6a1, secondary normalizing mechanism 6a2 and an annealing mechanism 7c all adopt high frequency induction heater, and the end face of the rolling wheel of described Roller compaction device 4 is circular arc.Certainly, also other heaters can be adopted.By adopting end face to be the rolling wheel of circular arc, force localization when rolling can be made at welded seam area, thus the crystallization after normalizing can better be destroyed, making it tightr.
The present embodiment by adding the preheating station that can carry out intensification preheating to the welding region at tape steel before welding post, like this, both welding stress can be reduced, weld strain speed can be reduced again, be conducive to the effusion of avoiding producing diffusible hydrogen in weld crack and weld metal, avoid producing hydrogen induced cracking, simultaneously, also the degree of hardening of weld dimensions can be reduced, and, also there is booster action to the cooling velocity slowing down postwelding; And by adding the heat treatment station can heat-treated the welded seam area at tape steel after welding post, like this, thick crystallization diffusion and the refinement of weld dimensions can be made, thus greatly increase the extensibility of weld seam; By the lower step process step design of welding sequence is become fragility treatment process, the fragility of 400 series stainless steels can be eliminated like this, thus further increasing plasticity and the extensibility of 400 series stainless steels; First, butt welded seam region adopts the heat treatment of normalizing process, like this, can make thick crystallization diffusion and the refinement of weld dimensions, thus greatly increase the extensibility of weld seam; Then, roll milling craft is adopted to the crystallization after diffusion and refinement, make it become more tight, thus further improve the extensibility of weld seam; Finally, butt welded seam region adopts fragility process, eliminates the fragility of 400 series stainless steels, thus further increasing plasticity and the extensibility of 400 series stainless steels again; First adopted the heat treatment of a normalizing by postwelding butt welded seam region, the thick crystalline solid of weld dimensions can be made to be spread, and make it be evenly distributed, keep weld dimensions uniform temperature to be that secondary normalizing is prepared simultaneously; The heat treatment of secondary normalizing is adopted followed by butt welded seam region, the refinement of weld dimensions texture can be made, simultaneously through double normalizing, the strip welded seam area temperature making fabric width >=1000mm relatively evenly, balance, thus create a further reduction the degree of hardening of weld dimensions, improve metal extensibility; By adopting annealing in process to coordinate the technique cooled rapidly, eliminating 400 series stainless steels at 475 DEG C of interval friable tissues produced, thus further increasing plasticity and the extensibility of 400 series stainless steels; Once cooling rapidly by adding again before annealing in process, having ensured the uniformity of technique when welding 400 series stainless steel and welding quality; By the band steel according to concrete different model, the different interval preheat temperature of optimum choice, normalizing temperature, secondary normalizing temperature and a temperature, further can improve the extensibility of weld seam; By adopting end face to be the rolling wheel of circular arc, force localization when rolling can be made at welded seam area, thus the crystallization after normalizing can better be destroyed, making it tightr.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. the fragility treating apparatus for 400 series stainless steel welding, comprise subsidiary engine dolly (7a) and be arranged in the water box (7b) on described subsidiary engine dolly (7a) successively, annealing mechanism (7c) and recirculated water refrigeration machine (7d), in described water box (7b) and the position of upper corresponding described water box (7b) top of described subsidiary engine dolly (7a) is respectively equipped with the cooling spray rapidly (7e) for cooling rapidly at the welding region positive and negative of tape steel, described cooling spray rapidly (7e) is communicated with the delivery outlet of described recirculated water refrigeration machine (7d), described water box (7b) is communicated with the input port of described recirculated water refrigeration machine (7d).
2., as claimed in claim 1 for the fragility treating apparatus of 400 series stainless steel welding, it is characterized in that, the heating-up temperature of described annealing mechanism (7c) is 500 ~ 650 DEG C.
3., as claimed in claim 1 for the fragility treating apparatus of 400 series stainless steel welding, it is characterized in that, described annealing mechanism (7c) adopts high frequency induction heater.
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| CN108705198A (en) * | 2018-06-28 | 2018-10-26 | 南京中高知识产权股份有限公司 | A kind of welding method of stainless steel materials |
| CN108890133A (en) * | 2018-06-28 | 2018-11-27 | 南京中高知识产权股份有限公司 | A kind of method of laser welded |
| CN109909609A (en) * | 2017-12-13 | 2019-06-21 | 南京机器人研究院有限公司 | A kind of process of laser welding stainless steel materials |
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- 2015-05-29 CN CN201520368008.3U patent/CN204735854U/en active Active
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| CN108705197A (en) * | 2018-05-03 | 2018-10-26 | 山西太钢不锈钢股份有限公司 | Chrome ferritic stainless steel welding and post-weld annealed technique in a kind of cold continuous rolling production line |
| CN108705197B (en) * | 2018-05-03 | 2020-05-01 | 山西太钢不锈钢股份有限公司 | Chromium ferrite stainless steel welding and post-welding annealing process in cold continuous rolling production line |
| CN108705198A (en) * | 2018-06-28 | 2018-10-26 | 南京中高知识产权股份有限公司 | A kind of welding method of stainless steel materials |
| CN108890133A (en) * | 2018-06-28 | 2018-11-27 | 南京中高知识产权股份有限公司 | A kind of method of laser welded |
| CN112474837A (en) * | 2020-11-16 | 2021-03-12 | 云南玉溪仙福钢铁（集团）有限公司 | Wire rod controlled cooling device for steelmaking production |
| CN112474837B (en) * | 2020-11-16 | 2024-04-05 | 云南玉溪仙福钢铁（集团）有限公司 | Wire rod accuse cold charge is put for steel rolling |
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