CN104174796B - A kind of production method of thermonuclear fusion heap stainless steel heavy forging - Google Patents
A kind of production method of thermonuclear fusion heap stainless steel heavy forging Download PDFInfo
- Publication number
- CN104174796B CN104174796B CN201410388287.XA CN201410388287A CN104174796B CN 104174796 B CN104174796 B CN 104174796B CN 201410388287 A CN201410388287 A CN 201410388287A CN 104174796 B CN104174796 B CN 104174796B
- Authority
- CN
- China
- Prior art keywords
- forging
- steel ingot
- time
- temperature
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of production method of thermonuclear fusion heap stainless steel heavy forging, comprising: the pretreatment of (one) steel ingot; (2) Heating Steel Ingots technique; (3) steel ingot Forging Technology; Technique is pulled out in (four) two upsettings two; (5) finished product shaping; (6) finished product forging Technology for Heating Processing; The thickness finally obtaining stainless steel heavy forging is 300-1000mm; Width is 300-1800mm; Length is 500-2200mm.The method achieve stainless steel forgings grain size >=2 grade, and forging face crack degree of depth < 1mm, meet thermonuclear fusion heap (comprising ITER plan) quality requirement.
Description
Technical field
The present invention relates to a kind of production method of thermonuclear fusion heap stainless steel heavy forging, be specifically related to the stainless steel forgings production method that a kind of thermonuclear fusion heap thickness is 300-1000mm, width is 300-1800mm.
Background technology
ITER plan (InternationalThermonuclearExperimentalReactor International thermal experimental reactor) is the Novel hot nuclear fusion experimental reactor project of European Union, the U.S., China, Japan, Russia, India, Korea S's seven countries and regions' participation.
The a large amount of thickness of this project demands is more than 316LN, 316L (the N)-IG stainless steel forgings product of 300mm, and main stainless steel material composition is as follows:
Grade of steel: 316L(N)-IG, component requirements: C≤0.03%, Si≤0.75%, Mn≤2.00%, P≤0.03%, S≤0.01%, Cr16.00%-18.00%, Ni11.00%-14.00%, Mo2.00%-2.50%, Co≤0.10%, N0.06%-0.08%, Nb≤0.10%, Ta≤0.10%
Grade of steel: 316LN, component requirements: C≤0.03%, Si≤0.75%, Mn≤2.00%, P≤0.03%, S≤0.01%, Cr16.00%-18.50%, Ni10.00%-14.00%, Mo2.00%-3.00%, Co≤0.10%, N0.10%-0.22%, Nb≤0.10%, Ta≤0.10%, (C+N) >=0.15%
Grade of steel: 316L, component requirements: C≤0.03%, Si≤0.75%, Mn≤2.00%, P≤0.03%, S≤0.01%, Cr16.00%-18.50%, Ni10.00%-14.00%, Mo2.00%-3.00%, Co≤0.10%, N≤0.10%%, Nb≤0.10%, Ta≤0.10%
Adopt usual Forging Technology to carry out the production of forging, then the grain size < 2 grades of forging, and face crack is more, crack depth reaches more than 2mm; Cannot meet the requirement of ITER to this forging grain size >=2 grade, and forging needs Lathe quantity comparatively large due to face crack deeply, causes production cost high, the problem that the delivery cycle is long.
Summary of the invention
In order to overcome above-mentioned deficiency, the present invention aims to provide a kind of production method of thermonuclear fusion heap stainless steel forgings, stainless steel forgings grain size >=2 grade can be realized, and forging face crack degree of depth < 1mm, meet thermonuclear fusion heap (comprising ITER plan) quality requirement.The stainless steel forgings thickness 300-1000mm of the thermonuclear fusion heap (comprising ITER plan) that the present invention relates to; Width: 300-1800mm; Length 500-2200mm.
The production method of a kind of thermonuclear fusion heap stainless steel heavy forging provided by the invention, comprises the steps:
(1) steel ingot pretreatment
Steel ingot requires: steel ingot is the one in billet, square ingot, octagon, hexagon ingot, and steel ingot needs sawing to turn around portion, and the ratio cutting away the height end to end and section circumscribed circle diameter is between 1.0-2.0;
(2) steel ingot first time heating process
Steel ingot enters heating furnace heating with cold ingot or band temperature steel ingot, is warmed up to 1210 ± 20 DEG C, be incubated 4 hours-8 hours, ensures steel ingot inside, external temperature grills thoroughly, homogeneous, and temperature retention time is forged after reaching requirement;
Heating process for the first time, concrete operations are: steel ingot enters heating furnace heating with cold ingot or band temperature steel ingot, firing rate≤80 below 500 DEG C DEG C/h, firing rate≤150 within the scope of 500 DEG C-1100 DEG C DEG C/h, 3 hours-3.5 hours are incubated 1100 DEG C ± 20 DEG C time, ensure that steel ingot is inner, external temperature is grilled thoroughly, homogeneous, after temperature retention time reaches requirement, be rapidly heated 1210 ± 20 DEG C, be incubated 4 hours-8 hours, after being wherein incubated 2 hours-2.5 hours, steel ingot upset once, ensures that steel ingot each heating-up temperature is consistent.
(3) steel ingot Forging Technology
Adopt flat-die forging technique, hydrostatic forging machine forges;
After steel ingot is come out of the stove, record steel ingot high/footpath than≤1.8, first radially forge, every time forging deformation amount controls the 2%-10% at steel ingot diameter, rotates steel ingot, and multiple passage forging, is forged into cylinder steel ingot; After radial forging, control cylindrical height/cylinder diameter at 1.5-2.5;
After steel ingot is come out of the stove, record steel ingot high/footpath than between 1.8-2.5, directly carry out following forging operation;
First time jumping-up forging: cylinder steel ingot is erect and forges, forging short transverse total deformation rate controls the 35%-48% at steel ingot height; Measure surface of steel ingot temperature;
First time pulls out forging: after jumping-up, again forge from the original radial direction of steel ingot, rotates blank, every time forging deformation amount controls the 2%-10% at steel ingot diameter, homogeneous deformation, is forged into cylinder, makes the height/blank diameter of the blank after forging at 1.5-2.5; Measure surface of steel ingot temperature;
In above forging process, each forging complete all needs measures surface of steel ingot temperature, when final forging temperature drops to 900-950 DEG C, stops forging, blank is delivered to heating furnace and carries out post bake; When surface of steel ingot temperature is more than 950 DEG C, proceed forging;
Technique is pulled out in (four) two upsettings two:
After first time pulling, according to jumping-up Forging Technology requirement above, carry out the forging of second time jumping-up: controlling distortion rate is: after distortion, steel ingot height is the 35%-45% of elemental height;
After secondary jumping-up, then according to above-mentioned pulling technological requirement, carry out second time and pull out forging, controlling distortion rate is: the blank height/blank diameter after forging is at 1.5-2.5;
In above forging process, each forging complete all needs measures surface of steel ingot temperature, when final forging temperature drops to 900-950 DEG C, stops forging, blank is delivered to heating furnace and carries out three heating; When surface of steel ingot temperature is more than 950 DEG C, proceed lower step finished product trimming;
(5) finished product shaping:
After two upsettings two are pulled out, radially short transverse forging, and make forging section rectangular or square, control the 2%-15% of every time deflection at finished size, forging is until reach within finished product forging shape and the margin of tolerance repeatedly;
(6) finished product forging Technology for Heating Processing:
Finished product after forging, enters heat-treatment furnace and heat-treats, and enters pond and be cooled fast to room temperature after coming out of the stove;
Described Technology for Heating Processing can adopt following two kinds of modes: (1) is in 30 minutes, load heat-treatment furnace to process, heat treatment heating-up temperature 1050-1150 DEG C, forging finished product thickness temperature retention time: 0.5-3 minute/mm of thickness, forging enters pond after coming out of the stove and is cooled fast to room temperature; (2), after after forging, forging directly enters pond cooling, reenter heat-treatment furnace and heat-treat, heat treatment heating-up temperature 1050-1150 DEG C, forging finished product thickness temperature retention time: 0.5-3 minute/mm of thickness, forging enters pond after coming out of the stove and is cooled fast to room temperature.
In such scheme, in described step (three) steel ingot Forging Technology, during steel ingot post bake: steel ingot second time heating-up temperature is 1160-1220 DEG C, and temperature retention time is 2 hours-3 hours.
In such scheme, the upsetting two of described step (four) two is pulled out in technique, during steel ingot three heating: steel ingot third time heating-up temperature is 1140-1200 DEG C, and temperature retention time is 2 hours-3 hours.
In above-mentioned forging process, the number of times that blank returns heating furnace controls at 1-2 time; Namely steel ingot carries out second time heating or third time heating in forging process.Can only heat three times at most, heating times is too much, can make the microstructure coarsening (namely grain size is thick) of forging.
The thickness of said method gained stainless steel heavy forging is 300-1000mm; Width is 300-1800mm; Length is 500-2200mm.
Of the present invention
beneficial effect:
The thermonuclear fusion heap (comprising ITER plan) that the present invention produces can reach 2 grades or thinner by stainless steel forgings grain size, and face crack is little, even if there is the position of crackle, crack depth is also less than 2mm.
Detailed description of the invention
Further illustrate the present invention below by embodiment, but be not limited to following examples.
embodiment 1:
The type of stainless steel of the present embodiment is 316L(N)-IG.
Trimmed size: 450
-0 + 30× 1100
-0 + 50× 2193
0 + 50mm.
Finished product forging theoretical weight: 8.608 tons.
The step of the present embodiment is as follows successively:
(1) steel ingot pretreatment
Steel ingot size, type: Rotary-table steel ingot, lower cross section diameter is 1000mm, and upper cross section diameter is 945mm, is highly height after 1807mm(crop end), height/diameter is than 1.8.
Steel ingot weight (removing end to end): 11.100 tons.
Steel ingot chemical composition:
C：0.012%Si：0.43%Mn：1.77%Cr：16.26%
Ni：13.77%P：0.016%S：0.002%N：751ppm
Mo：2.15%Co：0.03%，Nb：0.01%，Ta：0.010%
(2) Heating Steel Ingots
First fire heating: steel ingot enters stove with cold ingot, below 500 DEG C, heats according to 50 DEG C of-60 DEG C of programming rates per hour.
When 500 DEG C-1100 DEG C, firing rate, according to 110 DEG C-120 DEG C heating per hour, reaches 1100 DEG C, is incubated 3 hours 7 minutes 1108 DEG C-1120 DEG C time.
According to the firing rate of 180 DEG C per hour after insulation, be heated to 1210 DEG C, after 1205-1214 DEG C of temperature range is incubated 2 hours 10 minutes, steel is turned over once in steel ingot top and bottom, is again incubated 2 hours 4 minutes 1205-1214 DEG C of temperature range and comes out of the stove (total temperature retention time 4 hours 14 minutes).
(3) forge
100MN hydraulic forging press forges.
Steel ingot first forges in radial direction, uniform rotation steel ingot, and in diametric(al) homogeneous deformation, deformation rate 3.7%-9.0% (the upper and lower size of steel ingot is different, and distortion is different), after-swage dimension is φ 910 × 2070mm, and steel ingot ratio of height to diameter is 2.27.
First time jumping-up forging: steel ingot is erect, and forges along short transverse, point three distortion, make height become 1140mm(height total deformation rate 44.9% from 2070mm, steel ingot becomes φ 1226 × 1140mm).Measured surface temperature is 1106 DEG C.
First time pulls out forging: with machinery operator, steel ingot 90-degree rotation is forged, rotate steel ingot vertically, and control every time pressure 10mm, be of a size of φ 986 × 1763mm after forging, ratio of height to diameter is 1.79.Measured surface temperature is 993 DEG C.
Technique is pulled out in (four) two upsettings two
Second time jumping-up forging: steel ingot is erect, and forges, be out of shape at twice along short transverse, make height become 1120mm(height total deformation rate 36.5% from 1763mm, steel ingot becomes φ 1237 × 1120mm).Measured surface temperature 977 DEG C.
Second time pulls out forging: steel ingot 90-degree rotation forges, and rotates steel ingot vertically, controls the 3.3%-5.6% of every time pressure 15-25mm(finished size), after forging, cross dimensions is 620 × 1200mm.Measured surface temperature 942 DEG C.
Steel ingot returns heating furnace heating (two fire), is rapidly heated 1193 DEG C, is incubated forging of coming out of the stove for 130 minutes.
(5) forging shaping:
Reduce the forging of cross dimensions direction, control the 5%-15% of every time deflection at finished size, forging makes 620 × 1200mm cross section deformation be 450 repeatedly
-0 + 30× 1100
-0 + 50mm.
(6) finished product forging Technology for Heating Processing
After forging, 23 minutes loading heat-treatment furnaces process, heat-treatment furnace heating-up temperature 1060-1070 DEG C, forging finished product thickness temperature retention time: 273 minutes (0.6 minute/mm of thickness), come out of the stove to be cooled to room temperature into pond.
(7) forging detects
Forging checks grain size in 3.5-4.5 level according to ASTMA484/484M, meet thermonuclear fusion experimental reactor stainless steel forgings grain size >=2 grade and fluctuation the requirement of ± 1 grade.
Forging surface flawless defect.
embodiment 2:
The type of stainless steel of the present embodiment is 316LN.
Trimmed size: 600
-0 + 30× 1500
-0 + 50× 1900
0 + 50mm.
Finished product forging theoretical weight: 13.56 tons.
The step of the present embodiment is as follows successively:
(1) steel ingot
Steel ingot size, type: Rotary-table steel ingot, lower cross section diameter 1200mm, height after upper cross section diameter 1135mm height 1850mm(crop end), height/diameter is than 1.58.
Steel ingot weight (removing end to end): 15.70 tons.
Steel ingot chemical composition:
C：0.017%Si：0.50%Mn：1.51%Cr：16.15%
Ni：12.43%P：0.018%S：0.0012%N：1312ppm
Mo：2.08%Co：0.03%，Nb：0.01%，Ta：0.010%
(2) Heating Steel Ingots
First fire heating: steel ingot enters stove with cold ingot, below 500 DEG C, heats according to 50 DEG C of-60 DEG C of programming rates per hour.
When 500 DEG C-1100 DEG C, firing rate, according to 110 DEG C-120 DEG C heating per hour, reaches 1100 DEG C, is incubated 3 hours 18 minutes between 1108 DEG C-1120 DEG C time.
According to the firing rate of 180 DEG C per hour after insulation, be heated to 1210 DEG C, after 1203-1216 DEG C of temperature range is incubated 2 hours 21 minutes, steel is turned over once in steel ingot top and bottom, is again incubated 2 hours 11 minutes 1203-1216 DEG C of temperature range and comes out of the stove (total 4 hours heat times 32 points).
(3) forge
100MN hydraulic forging press forges.
Steel ingot first forges in radial direction, uniform rotation steel ingot, and in diametric(al) homogeneous deformation, deformation rate 3.08%-8.33% (the upper and lower size of steel ingot is different, and distortion is different), after-swage dimension is φ 1100 × 2084mm, and steel ingot ratio of height to diameter is 1.89.
First time jumping-up forging: steel ingot is erect, and forges along short transverse, point three distortion, make height become 1250mm(height total deformation rate 40% from 2084mm, steel ingot becomes φ 1420 × 1250mm).Measured surface temperature 968 DEG C.
First time pulls out forging: with machinery operator, steel ingot 90-degree rotation is forged, rotate steel ingot vertically, controls every time pressure 10mm, is of a size of φ 1060 × 2244mm, ratio of height to diameter 2.12 after forging.Measured surface temperature 944 DEG C.
Steel billet returns heating furnace and carries out post bake (two fire), is rapidly heated 1198 DEG C, is incubated forging of coming out of the stove for 125 minutes.
Technique is pulled out in (four) two upsettings two
Second time jumping-up forging: steel ingot is erect, and forges, be out of shape at twice along short transverse, make height become 1450mm(height total deformation rate 35.4% from 2244mm, steel ingot becomes φ 1318.7 × 1450mm).Measured surface temperature 971 DEG C.
Second time pulls out forging: steel ingot is toppled over 90 degree and fallen and forge, and radially, controls the 2.5%-4.2% of every time pressure 15-25mm(finished size), according to the forging of rectangular cross section shape, cross dimensions is 850 × 1520mm.Measured surface temperature 948 DEG C.
Steel billet returns heating furnace and carries out three heating (three fire), is rapidly heated 1155 DEG C, is incubated forging of coming out of the stove for 128 minutes.
(5) forging shaping:
Reduce the forging of cross dimensions direction, control the 5%-15% of every time deflection at finished size, forging makes section 850 × 1520 be swaged to 600 repeatedly
-0 + 30× 1500
-0 + 50mm.
(6) finished product forging Technology for Heating Processing
Enter pond after forging and be cooled fast to room temperature, load heat-treatment furnace two days later to process, heat-treatment furnace heating-up temperature 1060-1070 DEG C, forging finished product thickness temperature retention time: 1230 minutes (2.05 minutes/mm of thickness), coming out of the stove after process is cooled to room temperature into pond.
(7) forging detects
Forging checks grain size in 3.0-3.5 level according to ASTMA484/484M, meet thermonuclear fusion experimental reactor stainless steel forgings grain size >=2 grade and fluctuation the requirement of ± 1 grade.
There is crackle in forging surface corner, crack depth is less than 0.3mm.
embodiment 3:
The type of stainless steel of the present embodiment is 316L.
Trimmed size: 450
-0 + 30× 1150
-0 + 50× 2100
-0 + 50mm.
Finished product forging theoretical weight: 8.62 tons.
The step of the present embodiment is as follows successively:
(1) steel ingot
Steel ingot size, type: octagon ingot, lower cross section diameter 1150mm, upper cross section diameter 1175mm, height after height 2230mm(crop end), height/diameter is than 2.0.
Steel ingot weight (removing end to end): 18.65 tons.
Steel ingot chemical composition:
C：0.015%Si：0.48%Mn：1.62%Cr：16.32%
Ni：12.50%P：0.018%S：0.001%N：880ppm
Mo：2.11%Co：0.03%，Nb：0.01%，Ta：0.010%
(2) Heating Steel Ingots
First fire heating: steel ingot enters stove with cold ingot, below 500 DEG C, heats according to 50 DEG C of-60 DEG C of programming rates per hour.
When 500 DEG C-1100 DEG C, firing rate, according to 110 DEG C-120 DEG C heating per hour, reaches 1100 DEG C, is incubated 3 hours 01 minute between 1108 DEG C-1120 DEG C time.
According to the firing rate of 180 DEG C per hour after insulation, be heated to 1210 DEG C, after 1203-1216 DEG C of temperature range is incubated 2 hours 21 minutes, steel is turned over once in steel ingot top and bottom, is again incubated 2 hours 13 minutes 1203-1216 DEG C of temperature range and comes out of the stove.
(3) forge
100MN hydraulic forging press forges.
Steel ingot ratio of height to diameter is 2.0, does not carry out radial forging, direct jumping-up.
First time jumping-up forging: steel ingot is erect, and forges along short transverse, point three distortion, make height become 1230mm(height total deformation rate 44.8% from 2230mm, steel ingot becomes φ 1560 × 1230mm).Measured surface temperature 968 DEG C.
First time pulls out forging: with machinery operator, steel ingot 90-degree rotation is forged, rotate steel ingot vertically, controls every time pressure 10mm-25mm, is of a size of φ 1180 × 2150mm, ratio of height to diameter 1.82 after forging.Measured surface temperature 935 DEG C.
Steel billet returns heating furnace and carries out post bake (two fire), is rapidly heated 1195 DEG C, is incubated forging of coming out of the stove for 125 minutes.
Technique is pulled out in (four) two upsettings two
Second time jumping-up forging: steel ingot is erect, and forges, be out of shape at twice along short transverse, make height become 1290mm(height total deformation rate 40% from 2150mm, steel ingot becomes φ 1525 × 1290mm).Measured surface temperature 991 DEG C.
Second time pulls out forging: steel ingot is toppled over 90 degree and fallen and forge, and radially, control every time pressure 15-20mm, according to the forging of rectangular cross section shape, cross dimensions is 620 × 1520mm.Measured surface temperature 948 DEG C.
Steel billet returns heating furnace and carries out three heating (three fire), is rapidly heated 1155 DEG C, is incubated forging of coming out of the stove for 128 minutes.
(5) forging shaping:
Reduce the forging of cross dimensions direction, control the 5%-15% of every time deflection at finished size, forging makes section 620 × 1520mm be swaged to 450 repeatedly
-0 + 30× 1150
-0 + 50mm.
(6) finished product forging Technology for Heating Processing
After forging, 27 minutes loading heat-treatment furnaces process, heat-treatment furnace heating-up temperature 1060-1070 DEG C, forging finished product thickness temperature retention time: 315 minutes, come out of the stove to be cooled to room temperature into pond.
(7) forging detects
Forging checks grain size in 3.5-4.0 level according to ASTMA484/484M, meet thermonuclear fusion experimental reactor stainless steel forgings grain size >=2 grade and fluctuation the requirement of ± 1 grade.
Forging surface flawless.
Claims (8)
1. a thermonuclear fusion heap production method for stainless steel heavy forging, is characterized in that: comprise the steps:
(1) steel ingot pretreatment
Steel ingot requires: steel ingot is the one in billet, square ingot, octagon ingot, hexagon ingot, and steel ingot needs sawing to turn around portion, and the ratio cutting away the height end to end and section circumscribed circle diameter is between 1.0-2.0;
(2) steel ingot first time heating process
Steel ingot enters heating furnace heating with cold ingot or band temperature steel ingot, is warmed up to 1210 ± 20 DEG C, be incubated 4 hours-8 hours, ensures steel ingot inside, external temperature grills thoroughly, homogeneous, and temperature retention time is forged after reaching requirement;
(3) steel ingot Forging Technology
Adopt flat-die forging technique, hydrostatic forging machine forges;
After steel ingot is come out of the stove, record ratio≤1.8 of steel ingot height and section circumscribed circle diameter, first radially forge, every time forging deformation amount controls the 2%-10% at section circumscribed circle diameter, rotates steel ingot, and multiple passage forging, is forged into cylinder steel ingot; After radial forging, control the ratio of cylindrical height/cylinder diameter between 1.5-2.5;
After steel ingot is come out of the stove, the ratio recording steel ingot height and section circumscribed circle diameter, between 1.8-2.5, directly carries out following forging operation;
First time jumping-up forging: steel ingot is erect and forges, forging short transverse total deformation rate controls the 35%-48% at steel ingot height; Measure surface of steel ingot temperature;
First time pulls out forging: after jumping-up, again forge from the original radial direction of steel ingot, rotates steel ingot, every time forging deformation amount controls the 2%-10% at section circumscribed circle diameter, homogeneous deformation, is forged into cylinder, makes the height of the steel ingot after forging/steel ingot diameter ratio between 1.5-2.5; Measure surface of steel ingot temperature;
In above forging process, each forging complete all needs measures surface of steel ingot temperature, when final forging temperature drops to 900-950 DEG C, stops forging, steel ingot is delivered to heating furnace and carries out second time heating; When surface of steel ingot temperature is more than 950 DEG C, proceed forging;
(4) forging of second time jumping-up, second time pull out Forging Technology:
After first time pulling forging, according to first time jumping-up Forging Technology requirement, carry out the forging of second time jumping-up: controlling distortion rate is: after distortion, steel ingot height is the 35%-45% of elemental height;
After the forging of second time jumping-up, then according to the requirement of first time pulling Forging Technology, carry out second time and pull out forging, controlling distortion rate is: the steel ingot height/steel ingot diameter after forging is between 1.5-2.5;
In above forging process, each forging complete all needs measures surface of steel ingot temperature, when final forging temperature drops to 900-950 DEG C, stops forging, steel ingot is delivered to heating furnace and carries out third time heating; When surface of steel ingot temperature is more than 950 DEG C, proceed lower step finished product trimming;
(5) finished product shaping:
After twice jumping-up and twice pulling forging, radially, short transverse forging, and make forging section rectangular or square, control the 2%-15% of every time deflection at finished size, forging is until reach within finished product forging shape and the margin of tolerance repeatedly;
(6) finished product forging Technology for Heating Processing:
Finished product after forging, enters heat-treatment furnace and heat-treats, and enters pond and be cooled fast to room temperature after coming out of the stove.
2. the production method of thermonuclear fusion heap stainless steel heavy forging according to claim 1, it is characterized in that: described step (two) steel ingot first time heating process, concrete operations are: steel ingot enters heating furnace heating with cold ingot or band temperature steel ingot, firing rate≤80 below 500 DEG C DEG C/h, firing rate≤150 within the scope of 500 DEG C-1100 DEG C DEG C/h, 3 hours-3.5 hours are incubated 1100 DEG C ± 20 DEG C time, guarantee steel ingot is inner, external temperature is grilled thoroughly, homogeneous, after temperature retention time reaches requirement, be rapidly heated 1210 ± 20 DEG C, be incubated 4 hours-8 hours, after being wherein incubated 2 hours-2.5 hours, steel ingot upset once, ensure that steel ingot each heating-up temperature is consistent.
3. the production method of thermonuclear fusion heap stainless steel heavy forging according to claim 1, it is characterized in that: in described step (three) steel ingot Forging Technology, when steel ingot second time heats: steel ingot second time heating-up temperature is 1160-1220 DEG C, and temperature retention time is 2 hours-3 hours.
4. the production method of thermonuclear fusion heap stainless steel heavy forging according to claim 1, it is characterized in that: in the forging of described step (four) second time jumping-up, second time pulling Forging Technology, steel ingot third time is when heating: steel ingot third time heating-up temperature is 1140-1200 DEG C, and temperature retention time is 2 hours-3 hours.
5. the production method of thermonuclear fusion heap stainless steel heavy forging according to claim 1, is characterized in that: the number of times that described steel ingot returns heating furnace controls at 1-2 time, and namely steel ingot only carries out post bake or three heating in forging process.
6. the production method of thermonuclear fusion heap stainless steel heavy forging according to claim 1, is characterized in that: the thickness of described stainless steel heavy forging is 300-1000mm; Width is 300-1800mm; Length is 500-2200mm.
7. the production method of thermonuclear fusion heap stainless steel heavy forging according to claim 1, it is characterized in that: in described step (six) finished product forging Technology for Heating Processing, heat treatment detailed process is: in 30 minutes, load heat-treatment furnace to process, heat treatment heating-up temperature 1050-1150 DEG C, finished product forging thickness temperature retention time: 0.5-3 minute/mm of thickness, forging enters pond after coming out of the stove and is cooled fast to room temperature.
8. the production method of thermonuclear fusion heap stainless steel heavy forging according to claim 1, it is characterized in that: in described step (six) finished product forging Technology for Heating Processing, heat treatment detailed process is: after after forging, forging directly enters pond cooling, reenter heat-treatment furnace to heat-treat, heat treatment heating-up temperature 1050-1150 DEG C, finished product forging thickness temperature retention time: 0.5-3 minute/mm of thickness, forging enters pond after coming out of the stove and is cooled fast to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410388287.XA CN104174796B (en) | 2014-08-08 | 2014-08-08 | A kind of production method of thermonuclear fusion heap stainless steel heavy forging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410388287.XA CN104174796B (en) | 2014-08-08 | 2014-08-08 | A kind of production method of thermonuclear fusion heap stainless steel heavy forging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104174796A CN104174796A (en) | 2014-12-03 |
| CN104174796B true CN104174796B (en) | 2016-01-20 |
Family
ID=51956300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410388287.XA Active CN104174796B (en) | 2014-08-08 | 2014-08-08 | A kind of production method of thermonuclear fusion heap stainless steel heavy forging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104174796B (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106311943B (en) * | 2015-06-30 | 2018-01-23 | 宝钢特钢有限公司 | A kind of method that hexagonal shape Forging is produced using quick forging machine |
| CN106077392B (en) * | 2016-06-20 | 2018-01-23 | 安徽省瑞杰锻造有限责任公司 | It is a kind of to prevent processing technology eccentric above and below loose tool |
| CN106111875A (en) * | 2016-06-20 | 2016-11-16 | 安徽省瑞杰锻造有限责任公司 | A kind of Forging Technology of bent axle |
| CN105921704B (en) * | 2016-06-22 | 2018-09-14 | 四川六合锻造股份有限公司 | A method of reducing electroslag ingot performance difference end to end |
| CN106884127B (en) * | 2017-02-09 | 2019-02-26 | 攀钢集团江油长城特殊钢有限公司 | Low nitrogen steel material and its preparation method and application |
| CN107116167A (en) * | 2017-07-12 | 2017-09-01 | 安徽凯密克企业管理咨询有限公司 | A kind of forging technology of auto parts |
| CN107913962B (en) * | 2017-12-05 | 2019-05-28 | 燕山大学 | Inhibit the method for large forgings hot forging face checking |
| CN108161469A (en) * | 2018-02-22 | 2018-06-15 | 江阴振宏重型锻造有限公司 | A kind of process units of fusion reactor large scale fine grain special-shaped component |
| CN108194784B (en) * | 2018-02-22 | 2023-08-04 | 江阴振宏重型锻造有限公司 | U-shaped component for nuclear fusion support and manufacturing process thereof |
| CN108130404B (en) * | 2018-02-22 | 2024-03-15 | 振宏重工(江苏)股份有限公司 | Large-size fine grain special-shaped component for fusion reactor and manufacturing process thereof |
| CN109013744A (en) * | 2018-08-08 | 2018-12-18 | 中国原子能科学研究院 | A kind of manufacturing method of high silicon titanium-containing austenitic stainless steel material cladding tubes |
| CN109097678A (en) * | 2018-08-08 | 2018-12-28 | 中国原子能科学研究院 | A kind of manufacturing method of high silicon titanium-containing austenitic stainless steel material outer tube |
| CN110029289A (en) * | 2019-02-01 | 2019-07-19 | 上海加宁新材料科技有限公司 | The manufacturing method of superconduction nuclear fusion 316LN high-performance magnetism-free stainless steel |
| CN110029290B (en) * | 2019-02-01 | 2021-03-12 | 上海加宁新材料科技有限公司 | Manufacturing method of ultralow-temperature high-strength non-magnetic stainless steel impeller shaft |
| CN109940120B (en) * | 2019-04-10 | 2020-07-31 | 江阴振宏重型锻造有限公司 | Method for producing large low-temperature isomeric piece |
| CN109940121B (en) * | 2019-04-10 | 2024-04-12 | 振宏重工(江苏)股份有限公司 | Production line of large low-temperature different components for nuclear fusion reactor superconducting magnet |
| CN110125317B (en) * | 2019-05-27 | 2020-03-20 | 钢铁研究总院 | Forming method of high-strength stainless steel hot-rolled ring piece |
| CN110527904B (en) * | 2019-08-15 | 2021-03-19 | 洛阳双瑞特种装备有限公司 | Manufacturing method of long-life high-pressure pump head body |
| CN112496216B (en) * | 2020-11-23 | 2023-03-28 | 浙江天马轴承集团有限公司 | Forging production process of 30Cr15MoN high-nitrogen martensitic stainless steel bar |
| CN114273574B (en) * | 2021-04-02 | 2022-08-23 | 中国科学院金属研究所 | Forging method for controlling structural uniformity of large-size easy-segregation austenitic stainless steel bar |
| CN113736971B (en) * | 2021-09-09 | 2023-07-11 | 中航上大高温合金材料股份有限公司 | Homogenization treatment process of S31254 super austenitic stainless steel |
| CN114182078A (en) * | 2021-12-03 | 2022-03-15 | 上海电气上重铸锻有限公司 | Preparation method of high-strength austenite shaft heavy forging |
| CN114367615B (en) * | 2022-01-18 | 2023-07-14 | 山西太钢不锈钢股份有限公司 | Forging method of S32760 super duplex stainless steel ingot |
| CN115229140A (en) * | 2022-07-14 | 2022-10-25 | 中国第一重型机械股份公司 | Preparation method and device of composite steel ingot |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007038662A1 (en) * | 2007-08-15 | 2009-02-19 | Rheinmetall Waffe Munition Gmbh | Manufacturing process and steel for heavy ammunition shells |
| CN101987342B (en) * | 2009-08-07 | 2012-12-05 | 上海重型机器厂有限公司 | Forging method of tube sheet of nuclear power equipment |
| CN102091751B (en) * | 2010-12-03 | 2013-08-21 | 太原科技大学 | Control method for 316 LN steel heavy-forging crystalline grain |
| KR20140006186A (en) * | 2012-06-27 | 2014-01-16 | 현진소재주식회사 | Holding part forming type upsetting dies for a heavy metal forging process and the heavy metal forging process by it |
| CN103194581A (en) * | 2013-04-11 | 2013-07-10 | 太原钢铁(集团)有限公司 | Control method of austenitic stainless steel large forging structure for nuclear reactor |
| CN103350173B (en) * | 2013-06-24 | 2016-04-27 | 钢铁研究总院 | The production method of the overall heavy forging of a kind of austenitic stainless steel abnormity |
-
2014
- 2014-08-08 CN CN201410388287.XA patent/CN104174796B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104174796A (en) | 2014-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104174796B (en) | A kind of production method of thermonuclear fusion heap stainless steel heavy forging | |
| CN103350173B (en) | The production method of the overall heavy forging of a kind of austenitic stainless steel abnormity | |
| CN104175062B (en) | All-fiber-texture large-size double-flange fan main shaft forging method | |
| CN106282836A (en) | Steam turbine is by 2Cr11MoVNbN forging and manufacture method thereof | |
| CN105441845B (en) | The forging technology of TC18 titanium alloy raw material abnormal structure | |
| CN102808138A (en) | New austenite stainless steel material of fuel cladding in supercritical water cooled reactor, and manufacturing process thereof | |
| CN108237155B (en) | A kind of manufacturing method that large size tokamak vacuum room housing is complex-curved | |
| CN103143660B (en) | Preparation method of TC17 titanium alloy flat square section bar | |
| CN106148762B (en) | A kind of preparation method of low temperature TA7 DT titanium alloy rod bars | |
| US20240002967A1 (en) | Thermal Processing Method for Niobium-Containing High-Alloy Austenitic Heat-Resistant Stainless Steel Bar | |
| CN102965576B (en) | Preparation method of pump shaft of oil feed pump | |
| CN101812652B (en) | Method for heating titanium blank by using continuous heating furnace | |
| CN103255351A (en) | Highly-homogeneous large-scale ultrahigh-strength steel ingot and manufacturing method thereof | |
| CN101169984A (en) | Million-kilowatts-class nuclear power pressure container safe end manufacture process | |
| CN105925889A (en) | Ultrathick specification 1.2311 mold steel plate and preparation method thereof | |
| CN109055850A (en) | Improve the preparation method of cold work die steel eutectic carbide | |
| CN102899580A (en) | Large cross section austenite stainless steel thick plate and manufacturing method thereof | |
| CN111778442A (en) | Preparation method of ultrahigh-strength and plastic 316L stainless steel | |
| CN106378365B (en) | The preparation method of GH625 high temperature alloy pipes | |
| CN108246948A (en) | A kind of forging method for improving GH901 forging part tissues | |
| CN100590210C (en) | Technological process for improving twin boundary amount in gamma' precipitation strengthened type ferrous alloy | |
| CN110066968A (en) | A kind of manufacturing method of precipitation-hardening stainless steel hot rolled plate | |
| CN109465602A (en) | The manufacturing method of U-shaped insert positioning pin stocking in a kind of nuclear leve heap | |
| CN105935861A (en) | Preparing method for high-strength plastic austenitic stainless steel cap screw forging for nuclear power | |
| CN107245565A (en) | The stress relief annealing method of the effective steel continuous casting round bloom of high-pressure boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |