CN102825207A - Forging process of main stainless-steel pipeline for nuclear power - Google Patents
Forging process of main stainless-steel pipeline for nuclear power Download PDFInfo
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- CN102825207A CN102825207A CN2011101583583A CN201110158358A CN102825207A CN 102825207 A CN102825207 A CN 102825207A CN 2011101583583 A CN2011101583583 A CN 2011101583583A CN 201110158358 A CN201110158358 A CN 201110158358A CN 102825207 A CN102825207 A CN 102825207A
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Abstract
The invention relates to a forging process of a main stainless-steel pipeline for nuclear power. The forging process is characterized in that a 316LN electroslag ingot blank is adopted; heat cleaning is carried out on surface cracks in time in the forging process, and a forging ratio is guaranteed to be more than 4; construction members needed by the forging process comprise a hot leg L001A, a hot leg L001B, a cold leg A, a cold leg B, a cold leg C, a cold leg D, a wave pipe I, a wave pipe II, a wave pipe III, a wave pipe IV and a wave pipe VII; and the forging process of the construction members is grouped into the hot leg L001A, the hot leg L001B, a cold leg group, a wave pipe group including the wave pipes I, II and V, and a wave pipe group including the wave pipes III and IV. Compared with the prior art, the process disclosed by the invention has the beneficial effects of reducing the production heating number of a forge piece to a great extent, improving the production efficiency, guaranteeing the design size requirements on the forge piece, overcoming the heat crack tendency of the surface of the blank and improving the surface quality of the main pipeline through the timely heat cleaning in the forging process, and realizing the 100% localization of key equipment of the nuclear power.
Description
Technical field
The present invention relates to technical field of forging, relate in particular to a kind of stainless steel main nuclear power pipeline Forging Technology.
Background technology
The core of " the non-active compressed water reactor nuclear power technology " that is widely used at present is fission to take place in the equipment of " reactor " and produce great amount of heat energy with the nuclear fuel that uranium is processed; Take heat energy out of with the water that is under the high pressure again; In steam generator, produce steam; Steam pushing turbine band generator and is rotated together, and electricity just generates continuously, and delivers to from all directions through electrical network.The nuclear power station trunk line is the big heavy wall bearing pipe of coupled reaction core pressure vessel and steam generator, is " main artery " of nuclear steam supply system output reactor core heat energy, is one of nuclear one-level key equipment of pressurized-water reactor nuclear power plant.
The nuclear power station trunk line adopts Ultra-low carbon control nitrogen stainless steel 316LN material, and the processing and manufacturing difficulty is big, and it forges difficult point and mainly contains:
1) surperficial hot cracking tendency appears in blank surface during forge hot.
2) 316LN is an austenitic stainless steel, can not adopt the heat treatment mode crystal grain thinning after the forging, can only come crystal grain thinning through forging deformation.
3) forging is complex-shaped, hot arc L001A especially, and two ozzle space 45s, it is big to forge difficulty, is not easy to satisfy the design size requirement.
Summary of the invention
The purpose of this invention is to provide a kind of stainless steel main nuclear power pipeline Forging Technology, solve the deficiency of prior art, reduce face crack, refinement ozzle position grain size satisfies the design size requirement.
For realizing above-mentioned purpose, the present invention realizes through following technical scheme:
A kind of stainless steel main nuclear power pipeline Forging Technology; It is characterized in that; Adopt 316LN ESR ingot blank, control its harmful components S≤0.005% during smelting, P≤0.025%; Forge in the process and in time face crack is carried out the heat cleaning; Guarantee forging ratio greater than 4, its member comprises 11 sections of hot arc L001A, hot arc L001B, cold section A, cold section B, cold section C, cold section D, fluctuation pipe I, fluctuation pipe II, fluctuation pipe III, fluctuation pipe IV, fluctuation pipe V altogether, by structure difference and mechanical performance requirement difference; The Forging Technology of above-mentioned member is grouped into hot arc L001A, hot arc L001B, cold section group, fluctuation pipe IIIV group, fluctuation pipe IIIIV group, and wherein the operating procedure of hot arc L001A is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 5-6 hour with blank heating; Be heated to 620-660 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14-15 hour, and then be heated to 1180-1250 ℃, be incubated 20-30 hour with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size and hydraulic press upset die coupling;
3) in advance pulling, each drafts 40-60mm pulls out when not in place, returns stove insulation 2-6 hour;
4) secondary jumping-up pulling repeatedly when jumping-up is not in place, is returned stove insulation 16-24 hour; Pull out when not in place; Return stove insulation 2-6 hour, each drafts 50-150mm is because trunk line two ozzles become 45 ° of angles in the space; For ease of two ozzles are carried out calibration, at last blank is pulled out into the prism of cross section octagon;
5) seal is drawn in corresponding ozzle position, the segmentation pulling, as pull out not in placely, and return stove insulation 2-6 hour, forge when crackle appears in blank surface in the process, in time carry out heat cleaning, assurance width and depth ratio were greater than 6: 1 during the crackle cleaning;
6) pulling finishing guarantees total forging ratio greater than 4, pull out not in placely, returns stove and is incubated 2-6 hour, and the part forges the ozzle crystal grain thinning;
7) behind the forging finished product, be positioned over the ventilation, accelerate to be cooled to room temperature.
The operating procedure of said hot arc L001B is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 5-6 hour with blank heating; Be heated to 620-660 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14-15 hour, and then be heated to 1180-1250 ℃, be incubated 20-30 hour with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size and hydraulic press upset die coupling;
3) in advance pulling, each drafts 40-60mm pulls out when not in place, returns stove insulation 2-6 hour;
4) three jumping-ups pulling repeatedly when jumping-up is not in place, is returned stove insulation 16-24 hour, pulls out when not in place, returns stove insulation 2-6 hour, and each drafts 50-150mm can not pull out like last pulling and to require size, then increases jumping-up one time;
5) seal is drawn in corresponding ozzle position, the segmentation pulling, as pull out not in placely, and return stove insulation 2-6 hour, forge when crackle appears in blank surface in the process, in time carry out heat cleaning, assurance width and depth ratio were greater than 6: 1 during the crackle cleaning;
6) pulling finishing guarantees total forging ratio greater than 4, pull out not in placely, returns stove and is incubated 2-6 hour, and the part forges the ozzle crystal grain thinning;
7) behind the forging finished product, be positioned over the ventilation, accelerate to be cooled to room temperature.
The operating procedure of said cold section group is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 5-6 hour with blank heating; Be heated to 620-660 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14-15 hour, and then be heated to 1180-1250 ℃, be incubated 20-30 hour with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size and hydraulic press upset die coupling;
3) in advance pulling, each drafts 40-60mm pulls out when not in place, returns stove insulation 2-4 hour;
4) secondary jumping-up pulling repeatedly when jumping-up is not in place, is returned stove insulation 10-15 hour, pulls out when not in place, returns stove insulation 2-4 hour, and each drafts 50-150mm pulls out into earlier cylindrically, pulls out into the prism of cross section octagon then;
5) draw the seal segmentation, segmentation pulling, as pull out not in placely, and return stove insulation 2-6 hour, forge when crackle appears in blank surface in the process, in time carry out heat cleaning, assurance width and depth ratio were greater than 6: 1 during the crackle cleaning;
6) pulling finishing guarantees total forging ratio greater than 4, pull out not in placely, returns stove and is incubated 2-6 hour;
7) be positioned over the ventilation behind the finished product, accelerate to be cooled to room temperature.
The operating procedure of said fluctuation pipe IIIV group is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 5-6 hour with blank heating; Be heated to 620-660 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14-15 hour, and then be heated to 1180-1250 ℃, be incubated 20-30 hour with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size and hydraulic press upset die coupling;
3) pulling blanking, each drafts 40-60mm pulls out when not in place, returns stove insulation 2-4 hour;
4) segmentation pulling pull out not in placely, returns stove insulation 1-2 hour, forges when crackle appears in blank surface in the process, in time carries out heat cleaning, and assurance width and depth ratio were greater than 6: 1 when crackle was cleared up;
5) finishing is positioned over the ventilation behind the finished product, accelerate to be cooled to room temperature.
The operating procedure of said fluctuation pipe IIIIV group is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 5-6 hour with blank heating; Be heated to 620-660 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14-15 hour, and then be heated to 1180-1250 ℃, be incubated 20-30 hour with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size and hydraulic press upset die coupling;
3) in advance pulling, each drafts 40-60mm pulls out when not in place, returns stove insulation 2-4 hour;
4) jumping-up pulling when jumping-up is not in place, is returned stove insulation 16-20 hour, pulls out when not in place, returns stove insulation 2-4 hour, each drafts 50-150mm;
5) pulling blanking, each drafts 40-60mm pulls out when not in place, returns stove insulation 2-4 hour;
6) segmentation pulling pull out not in placely, returns stove insulation 1-2 hour, forges when crackle appears in blank surface in the process, in time carries out heat cleaning, and assurance width and depth ratio were greater than 6: 1 when crackle was cleared up;
7) finishing is positioned over the ventilation behind the finished product, accelerate to be cooled to room temperature.
Compared with prior art, the invention has the beneficial effects as follows:
1) reduces the production fire of forging greatly, promptly practiced thrift the energy, improved production efficiency, guaranteed the design size requirement of forging again.
2) through heat cleaning in time in the forging process, overcome the hot cracking tendency of blank surface, improved the surface quality of trunk line.
3) played great function to realizing that nuclear power key equipment 100% domesticizes, its social benefit and economic benefit are inestimable.
Description of drawings
Fig. 1 is main nuclear power pipeline hot arc L001A forging ' s block dimension figure;
Fig. 2 is that hot arc L001A is drawn into eight arris post state diagrams;
Fig. 3 is that hot arc L001A presses shoulder to tell the state diagram of C section;
Fig. 4 is hot arc L001A segmentation pulling finishing state diagram;
Fig. 5 is main nuclear power pipeline hot arc L001B forging ' s block dimension figure;
Fig. 6 is that the seal state diagram is drawn in hot arc L001B segmentation;
Fig. 7 is cold section A of main nuclear power pipeline, cold section B forging ' s block dimension figure;
Fig. 8 is that the seal state diagram is drawn in cold section A, cold section B segmentation;
Fig. 9 is cold section C of main nuclear power pipeline, cold section D forging ' s block dimension figure;
Figure 10 is that the seal state diagram is drawn in cold section C, cold section D segmentation;
Figure 11 is main nuclear power pipeline fluctuation pipe I, fluctuation pipe II, fluctuation pipe V forging ' s block dimension figure;
Figure 12 is main nuclear power pipeline fluctuation pipe III, fluctuation pipe IV forging ' s block dimension figure.
The specific embodiment
Below in conjunction with embodiment the present invention is described further:
The present invention is a kind of stainless steel main nuclear power pipeline Forging Technology; It adopts 316LN ESR ingot blank; Control its harmful components S≤0.005% during smelting, P≤0.025% in time carries out the heat cleaning to face crack in the process of forging; Improve forging surface quality; Its member comprises its 11 sections of hot arc L001A, hot arc L001B, cold section A, cold section B, cold section C, cold section D, fluctuation pipe I, fluctuation pipe II, fluctuation pipe III, fluctuation pipe IV, fluctuation pipe V altogether, and is different by structure difference and mechanical performance requirements, and the Forging Technology of above-mentioned member is grouped into hot arc L001A, hot arc L001B, cold section group, fluctuation pipe IIIV group, fluctuates and manage IIIIV and organize.
See Fig. 1, Fig. 2, Fig. 3, Fig. 4, show that wherein the operating procedure of hot arc L001A is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 6 hours with blank heating; Be heated to 630-670 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14 hours, and then be heated to 1190-1210 ℃, be incubated 30 hours with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size φ 930mm * 1300mm and hydraulic press upset die coupling;
3) pull out 1600mm * 3960mm to φ in advance, each drafts 50mm pulls out when not in place, returns stove insulation 3 hours;
4) secondary jumping-up pulling repeatedly, jumping-up when jumping-up is not in place, are returned stove insulation 16 hours to φ 2050mm * 2500mm; Pull out 1600mm * 3960mm, pull out when not in place, return stove insulation 4 hours, each drafts 50-150mm to φ; Because trunk line two ozzles become 45 ° of angles in the space, for ease of two ozzles are carried out calibration, at last blank is pulled out into the prism of cross section octagon; Prism size opposite side distance 1430mm, long 4690mm, pull out earlier the circle after the side of pulling out;
5) seal is drawn in corresponding ozzle position, presses shoulder to tell C section, A+B section, D+E+ rear, and the C section is pressed the dark 160mm of shoulder, wide 1200mm; The wide 780mm of B section, the wide 780mm of D section, A section, C section, the segmentation of E section pull out the 1060mm to φ, as pull out not in place then; Return stove insulation 5 hours, forge when crackle appears in blank surface in the process, in time carry out the heat cleaning; Guarantee during the crackle cleaning that width and depth ratio greater than 6: 1, can not form not only narrow but also dark pit;
6) pulling finishing B section, D section guarantee total forging ratio greater than 4, pull outs not in placely, return stove and are incubated 5 hours, and the part forges B section, D section ozzle position with crystal grain thinning;
7) behind the forging finished product, be positioned over the ventilation, accelerate to be cooled to room temperature, reduce the possibility of grain growth under the high temperature.
See Fig. 5, Fig. 6, wherein the operating procedure of hot arc L001B is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 6 hours with blank heating; Be heated to 630-670 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14 hours, and then be heated to 1190-1210 ℃, be incubated 30 hours with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size φ 930mm * 1250mm and hydraulic press upset die coupling;
3) pull out 1600mm * 3960mm to φ in advance, each drafts 50mm pulls out when not in place, returns stove insulation 3 hours;
4) three jumping-up pullings repeatedly, jumping-up is to φ 2000mm * 2550mm, when jumping-up is not in place; Returned stove insulation 16 hours, and pulled out 1600mm, pull out when not in place to φ; Return stove insulation 4 hours; Each drafts 50-150mm can not pull out 1900mm * 1060mm * 4015mm like last pulling, then increases jumping-up one time;
5) draw the seal segmentation and go out the wide 1645mm of I section, the wide 960mm of II section, the wide 1300mm of III section, II section respective tube mouth position pulls out I section and III section respectively to φ 1100mm; Guarantee that I section and III section are coaxial, as pull out not in placely, return stove and be incubated 2-6 hour; Forge when crackle appears in blank surface in the process; In time carry out the heat cleaning, guarantee during the crackle cleaning that width and depth ratio greater than 6: 1, can not form not only narrow but also dark pit;
6) pulling finishing guarantees total forging ratio greater than 4, pull out not in placely, returns stove and is incubated 2-6 hour, and the part forges the ozzle crystal grain thinning;
7) behind the forging finished product, be positioned over the ventilation, accelerate to be cooled to room temperature, reduce the possibility of grain growth under the high temperature.
Comprise cold section A, cold section B, cold section C, cold section D in the said cold section group, structural similarity is seen Fig. 7, Fig. 8 each other, and wherein cold section A is identical with cold section B physical dimension, sees Fig. 9, Figure 10, and cold section C is identical with cold section D physical dimension, and the concrete operations step is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 5-6 hour with blank heating; Be heated to 620-660 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14-15 hour, and then be heated to 1180-1250 ℃, be incubated 20-30 hour with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size φ 930mm * 1100mm and hydraulic press upset die coupling;
3) pull out 1400mm * 2900mm to φ in advance, each drafts 50mm pulls out when not in place, returns stove insulation 2-4 hour;
4) secondary jumping-up pulling repeatedly, jumping-up is to φ 1750mm, when jumping-up is not in place; Returned stove insulation 10-15 hour, and pulled out 1400mm * 2850mm, pull out when not in place to φ; Return stove insulation 2-4 hour; Each drafts 50-150mm pulls out into earlier cylindrically, pulls out into the prism of cross section octagon opposite side distance 1100mm then;
5) draw seal blank is divided into I section, II section, III section+tail, segmentation pulling, as pull out not in placely, and return stove insulation 2-6 hour, forge when crackle appears in blank surface in the process, in time carry out heat cleaning, assurance width and depth ratio were greater than 6: 1 during the crackle cleaning;
6) pulling finishing guarantees total forging ratio greater than 4, pull out not in placely, returns stove and is incubated 2-6 hour;
7) be positioned over the ventilation behind the finished product, accelerate to be cooled to room temperature.
In the said fluctuation pipe IIIV group, fluctuation pipe I, fluctuation pipe II, fluctuation pipe V are formed by same blank disjunction, see Figure 11, and its concrete operations step is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 5-6 hour with blank heating; Be heated to 620-660 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14-15 hour, and then be heated to 1180-1250 ℃, be incubated 20-30 hour with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size φ 930mm * 1100mm and hydraulic press upset die coupling;
3) pull out 650mm * 13800mm to φ, the marking knife blanking is divided into fluctuation pipe I+ fluctuation pipe V+ arc end and receives two sections at arc end with fluctuation pipe II+, and each drafts 50mm pulls out when not in place, returns stove insulation 2-4 hour;
4) segmentation pulls out 515 ± 10mm to φ, pulls out not in placely, returns stove insulation 1-2 hour, forges when crackle appears in blank surface in the process, in time carries out heat cleaning, and assurance width and depth ratio were greater than 6: 1 during the crackle cleaning;
5) finishing is positioned over the ventilation behind the finished product, accelerate to be cooled to room temperature.
In the said fluctuation pipe IIIIV group, fluctuation pipe III, fluctuation pipe IV are formed by same blank disjunction, see Figure 12, and its concrete operations step is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 5-6 hour with blank heating; Be heated to 620-660 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14-15 hour, and then be heated to 1180-1250 ℃, be incubated 20-30 hour with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size φ 930mm * 1100mm and hydraulic press upset die coupling;
3) pull out 1400mm * 2900mm to φ in advance, each drafts 50mm pulls out when not in place, returns stove insulation 2-4 hour;
4) jumping-up pulling, jumping-up when jumping-up is not in place, are returned stove insulation 16-20 hour to φ 1800mm, pull out 750mm * 10070mm to φ, pull out when not in place, return stove insulation 2-4 hour, each drafts 50-150mm;
5) marking knife segmentation blanking becomes fluctuation pipe III+ arc end and fluctuation pipe IV+ to receive two sections at arc end; The segmentation pulling is forging ' s block dimension extremely separately; Pull out not in placely, returned stove insulation 1-2 hour, forge when crackle appears in blank surface in the process; In time carry out the heat cleaning, guarantee during the crackle cleaning that width and depth ratio were greater than 6: 1;
7) finishing is positioned over the ventilation behind the finished product, accelerate to be cooled to room temperature.
Claims (5)
1. stainless steel main nuclear power pipeline Forging Technology; It is characterized in that; Adopt 316LN ESR ingot blank, control its harmful components S≤0.005% during smelting, P≤0.025%; Forge in the process and in time face crack is carried out the heat cleaning; Guarantee forging ratio greater than 4, its member comprises 11 sections of hot arc L001A, hot arc L001B, cold section A, cold section B, cold section C, cold section D, fluctuation pipe I, fluctuation pipe II, fluctuation pipe III, fluctuation pipe IV, fluctuation pipe V altogether, by structure difference and mechanical performance requirement difference; The Forging Technology of above-mentioned member is grouped into hot arc L001A, hot arc L001B, cold section group, fluctuation pipe IIIV group, fluctuation pipe IIIIV group, and wherein the operating procedure of hot arc L001A is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 5-6 hour with blank heating; Be heated to 620-660 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14-15 hour, and then be heated to 1180-1250 ℃, be incubated 20-30 hour with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size and hydraulic press upset die coupling;
3) in advance pulling, each drafts 40-60mm pulls out when not in place, returns stove insulation 2-6 hour;
4) secondary jumping-up pulling repeatedly when jumping-up is not in place, is returned stove insulation 16-24 hour; Pull out when not in place; Return stove insulation 2-6 hour, each drafts 50-150mm is because trunk line two ozzles become 45 ° of angles in the space; For ease of two ozzles are carried out calibration, at last blank is pulled out into the prism of cross section octagon;
5) seal is drawn in corresponding ozzle position, the segmentation pulling, as pull out not in placely, and return stove insulation 2-6 hour, forge when crackle appears in blank surface in the process, in time carry out heat cleaning, assurance width and depth ratio were greater than 6: 1 during the crackle cleaning;
6) pulling finishing guarantees total forging ratio greater than 4, pull out not in placely, returns stove and is incubated 2-6 hour, and the part forges the ozzle crystal grain thinning;
7) behind the forging finished product, be positioned over the ventilation, accelerate to be cooled to room temperature.
2. a kind of stainless steel main nuclear power pipeline Forging Technology according to claim 1 is characterized in that the operating procedure of said hot arc L001B is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 5-6 hour with blank heating; Be heated to 620-660 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14-15 hour, and then be heated to 1180-1250 ℃, be incubated 20-30 hour with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size and hydraulic press upset die coupling;
3) in advance pulling, each drafts 40-60mm pulls out when not in place, returns stove insulation 2-6 hour;
4) three jumping-ups pulling repeatedly when jumping-up is not in place, is returned stove insulation 16-24 hour, pulls out when not in place, returns stove insulation 2-6 hour, and each drafts 50-150mm can not pull out like last pulling and to require size, then increases jumping-up one time;
5) seal is drawn in corresponding ozzle position, the segmentation pulling, as pull out not in placely, and return stove insulation 2-6 hour, forge when crackle appears in blank surface in the process, in time carry out heat cleaning, assurance width and depth ratio were greater than 6: 1 during the crackle cleaning;
6) pulling finishing guarantees total forging ratio greater than 4, pull out not in placely, returns stove and is incubated 2-6 hour, and the part forges the ozzle crystal grain thinning;
7) behind the forging finished product, be positioned over the ventilation, accelerate to be cooled to room temperature.
3. a kind of stainless steel main nuclear power pipeline Forging Technology according to claim 1 is characterized in that the operating procedure of said cold section group is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 5-6 hour with blank heating; Be heated to 620-660 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14-15 hour, and then be heated to 1180-1250 ℃, be incubated 20-30 hour with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size and hydraulic press upset die coupling;
3) in advance pulling, each drafts 40-60mm pulls out when not in place, returns stove insulation 2-4 hour;
4) secondary jumping-up pulling repeatedly when jumping-up is not in place, is returned stove insulation 10-15 hour, pulls out when not in place, returns stove insulation 2-4 hour, and each drafts 50-150mm pulls out into earlier cylindrically, pulls out into the prism of cross section octagon then;
5) draw the seal segmentation, segmentation pulling, as pull out not in placely, and return stove insulation 2-6 hour, forge when crackle appears in blank surface in the process, in time carry out heat cleaning, assurance width and depth ratio were greater than 6: 1 during the crackle cleaning;
6) pulling finishing guarantees total forging ratio greater than 4, pull out not in placely, returns stove and is incubated 2-6 hour;
7) be positioned over the ventilation behind the finished product, accelerate to be cooled to room temperature.
4. a kind of stainless steel main nuclear power pipeline Forging Technology according to claim 1 is characterized in that, the operating procedure of said fluctuation pipe IIIIV group is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 5-6 hour with blank heating; Be heated to 620-660 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14-15 hour, and then be heated to 1180-1250 ℃, be incubated 20-30 hour with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size and hydraulic press upset die coupling;
3) pulling blanking, each drafts 40-60mm pulls out when not in place, returns stove insulation 2-4 hour;
4) segmentation pulling pull out not in placely, returns stove insulation 1-2 hour, forges when crackle appears in blank surface in the process, in time carries out heat cleaning, and assurance width and depth ratio were greater than 6: 1 when crackle was cleared up;
5) finishing is positioned over the ventilation behind the finished product, accelerate to be cooled to room temperature.
5. a kind of stainless steel main nuclear power pipeline Forging Technology according to claim 1 is characterized in that, the operating procedure of said fluctuation pipe IIIIV group is following:
1) heat blank with heating furnace, elder generation to 330-370 ℃, is incubated 5-6 hour with blank heating; Be heated to 620-660 ℃ with the heating rate that is not more than 30 ℃/h then; Be incubated 14-15 hour, and then be heated to 1180-1250 ℃, be incubated 20-30 hour with the heating rate that is not more than 40 ℃/h; The forging of can coming out of the stove, final forging temperature is not less than 950 ℃;
2) bar hold, jaw size and hydraulic press upset die coupling;
3) in advance pulling, each drafts 40-60mm pulls out when not in place, returns stove insulation 2-4 hour;
4) jumping-up pulling when jumping-up is not in place, is returned stove insulation 16-20 hour, pulls out when not in place, returns stove insulation 2-4 hour, each drafts 50-150mm;
5) pulling blanking, each drafts 40-60mm pulls out when not in place, returns stove insulation 2-4 hour;
6) segmentation pulling pull out not in placely, returns stove insulation 1-2 hour, forges when crackle appears in blank surface in the process, in time carries out heat cleaning, and assurance width and depth ratio were greater than 6: 1 when crackle was cleared up;
7) finishing is positioned over the ventilation behind the finished product, accelerate to be cooled to room temperature.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110158358.3A CN102825207B (en) | 2011-06-13 | 2011-06-13 | A kind of stainless steel main nuclear power pipeline Forging Technology |
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|---|---|---|---|
| CN201110158358.3A CN102825207B (en) | 2011-06-13 | 2011-06-13 | A kind of stainless steel main nuclear power pipeline Forging Technology |
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| CN102825207A true CN102825207A (en) | 2012-12-19 |
| CN102825207B CN102825207B (en) | 2015-12-02 |
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| CN201110158358.3A Active CN102825207B (en) | 2011-06-13 | 2011-06-13 | A kind of stainless steel main nuclear power pipeline Forging Technology |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041427A (en) * | 2016-06-29 | 2016-10-26 | 宝钢特钢有限公司 | Production method of cylindrical forging |
| CN108994230A (en) * | 2018-07-16 | 2018-12-14 | 成都先进金属材料产业技术研究院有限公司 | Method for manufacturing and its forging for 16Mn alloy structure steel forgings |
| CN109187864A (en) * | 2018-09-06 | 2019-01-11 | 苏州热工研究院有限公司 | Used in nuclear power station forges main pipeline manufacturing process assessment method |
| CN110125315A (en) * | 2019-05-23 | 2019-08-16 | 二重（德阳）重型装备有限公司 | The forging forming method of main pipeline pipe with asymmetric ozzle |
| CN110465616A (en) * | 2019-08-15 | 2019-11-19 | 上海电气上重铸锻有限公司 | A kind of forging method of super-section axis class austenite pipe control grain size |
| CN111644552A (en) * | 2020-06-16 | 2020-09-11 | 建龙北满特殊钢有限责任公司 | Forging method of multistage step roller with cone frustum |
| CN111889602A (en) * | 2020-07-31 | 2020-11-06 | 河南中原特钢装备制造有限公司 | Upsetting plate for improving electroslag ingot forging roll yield and forging method |
| CN115740314A (en) * | 2022-11-24 | 2023-03-07 | 南京工程学院 | Anti-cracking and energy-saving forging process for high-strength large-scale forging |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020136347A1 (en) * | 2001-01-19 | 2002-09-26 | Jeong Yong Hwan | Method for manufacturing a tube and a sheet of niobium-containing zirconium alloy for a high burn-up nuclear fuel |
| JP2009299120A (en) * | 2008-06-12 | 2009-12-24 | Daido Steel Co Ltd | MANUFACTURING METHOD OF Ni-Cr-Fe TERNARY SYSTEM ALLOY MATERIAL |
| CN101670416A (en) * | 2008-09-09 | 2010-03-17 | 上海重型机器锻件厂 | Forging molding method for million kilowatt nuclear power main pipe |
| CN101797623A (en) * | 2009-12-31 | 2010-08-11 | 上海新闵重型锻造有限公司 | Forging method of steam generator primary side connection pipe safety end and witness piece |
| CN101954439A (en) * | 2010-08-17 | 2011-01-26 | 吉林省昊宇石化电力设备制造有限公司 | Forging method of AP1000 nuclear-power main pipeline forging piece |
| CN101987342A (en) * | 2009-08-07 | 2011-03-23 | 上海重型机器厂有限公司 | Forging method of tube sheet of nuclear power equipment |
-
2011
- 2011-06-13 CN CN201110158358.3A patent/CN102825207B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020136347A1 (en) * | 2001-01-19 | 2002-09-26 | Jeong Yong Hwan | Method for manufacturing a tube and a sheet of niobium-containing zirconium alloy for a high burn-up nuclear fuel |
| JP2009299120A (en) * | 2008-06-12 | 2009-12-24 | Daido Steel Co Ltd | MANUFACTURING METHOD OF Ni-Cr-Fe TERNARY SYSTEM ALLOY MATERIAL |
| CN101670416A (en) * | 2008-09-09 | 2010-03-17 | 上海重型机器锻件厂 | Forging molding method for million kilowatt nuclear power main pipe |
| CN101987342A (en) * | 2009-08-07 | 2011-03-23 | 上海重型机器厂有限公司 | Forging method of tube sheet of nuclear power equipment |
| CN101797623A (en) * | 2009-12-31 | 2010-08-11 | 上海新闵重型锻造有限公司 | Forging method of steam generator primary side connection pipe safety end and witness piece |
| CN101954439A (en) * | 2010-08-17 | 2011-01-26 | 吉林省昊宇石化电力设备制造有限公司 | Forging method of AP1000 nuclear-power main pipeline forging piece |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041427A (en) * | 2016-06-29 | 2016-10-26 | 宝钢特钢有限公司 | Production method of cylindrical forging |
| CN108994230A (en) * | 2018-07-16 | 2018-12-14 | 成都先进金属材料产业技术研究院有限公司 | Method for manufacturing and its forging for 16Mn alloy structure steel forgings |
| CN109187864A (en) * | 2018-09-06 | 2019-01-11 | 苏州热工研究院有限公司 | Used in nuclear power station forges main pipeline manufacturing process assessment method |
| CN109187864B (en) * | 2018-09-06 | 2021-02-26 | 苏州热工研究院有限公司 | Method for evaluating manufacturing process of forged main pipeline for nuclear power station |
| CN110125315A (en) * | 2019-05-23 | 2019-08-16 | 二重（德阳）重型装备有限公司 | The forging forming method of main pipeline pipe with asymmetric ozzle |
| CN110465616A (en) * | 2019-08-15 | 2019-11-19 | 上海电气上重铸锻有限公司 | A kind of forging method of super-section axis class austenite pipe control grain size |
| CN111644552A (en) * | 2020-06-16 | 2020-09-11 | 建龙北满特殊钢有限责任公司 | Forging method of multistage step roller with cone frustum |
| CN111644552B (en) * | 2020-06-16 | 2021-09-14 | 建龙北满特殊钢有限责任公司 | Forging method of multistage step roller with cone frustum |
| CN111889602A (en) * | 2020-07-31 | 2020-11-06 | 河南中原特钢装备制造有限公司 | Upsetting plate for improving electroslag ingot forging roll yield and forging method |
| CN111889602B (en) * | 2020-07-31 | 2022-01-07 | 河南中原特钢装备制造有限公司 | Upsetting plate for improving electroslag ingot forging roll yield and forging method |
| CN115740314A (en) * | 2022-11-24 | 2023-03-07 | 南京工程学院 | Anti-cracking and energy-saving forging process for high-strength large-scale forging |
| CN115740314B (en) * | 2022-11-24 | 2023-05-16 | 南京工程学院 | High-strength large forging anti-cracking energy-saving forging process |
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