CN117733048A - Forging forming method of 1Cr15Ni36W3Ti stainless steel nuclear power forge piece - Google Patents
Forging forming method of 1Cr15Ni36W3Ti stainless steel nuclear power forge piece Download PDFInfo
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- CN117733048A CN117733048A CN202311840181.4A CN202311840181A CN117733048A CN 117733048 A CN117733048 A CN 117733048A CN 202311840181 A CN202311840181 A CN 202311840181A CN 117733048 A CN117733048 A CN 117733048A
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- 238000005242 forging Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000010935 stainless steel Substances 0.000 title claims abstract description 14
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 238000004321 preservation Methods 0.000 claims abstract description 20
- 238000003754 machining Methods 0.000 claims abstract description 13
- 238000000137 annealing Methods 0.000 claims abstract description 11
- 239000006104 solid solution Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 7
- 230000000052 comparative effect Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005563 spheronization Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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Abstract
The application discloses a forging forming method of a 1Cr15Ni36W3Ti stainless steel nuclear power forge piece in the technical field of forging forming, which comprises the following steps: s1, blanking round steel to obtain a bar stock; s2, heating: placing the bar stock into a gas furnace, heating to 1180+/-20 ℃, and preserving heat for 2.5-3 hours; s3, upsetting, reverse drawing, reverse upsetting and rounding of the bar to obtain a blank; s4, machining the core part of the blank to be empty, and machining the outer circle to a certain size; s5, heat treatment: controlling the solid solution temperature to be 1080-1100 ℃, preserving the heat for 1-1.5 h, and then cooling with water; the annealing temperature is controlled to 840-860 ℃ for the 1 st time, and air cooling is carried out after heat preservation for 10-12 h; the temperature of the 2 nd fire is controlled to 690-710 ℃, and the air cooling is carried out after the heat preservation is carried out for 28-30 h. Compared with the prior art, the main deformation direction is controlled by different forming modes, the mechanical properties of the main deformation direction reach the specified values after the main deformation direction is subjected to heat treatment by the same heat treatment method, and compared with the conventional forging method, the main deformation direction is more saved in material consumption and cost.
Description
Technical Field
The invention relates to the technical field of forging forming, in particular to a forging forming method of a 1Cr15Ni36W3Ti stainless steel nuclear power forge piece.
Background
The 1Cr15Ni36W3Ti material belongs to austenitic heat-strength stainless steel, and after long-term aging at 700 ℃, the hardness and strength of the steel are greatly improved and a high impact value is maintained due to the precipitation hardening effect of titanium in the steel. Similar to the brands of Russian AZO 612 and Tn 35, the steel has good strong plasticity, but also has high nickel (Ni) content, similar to high-temperature alloy materials, so that the raw material cost is high, and the manufactured product has high cost and cannot be applied on a large scale. At present, the novel high-strength steel plate is mainly applied to blades, discs, rotors, connecting pieces and nuclear power fasteners of a gas turbine, and is rarely used on nuclear power forgings.
The conventional forging forming method in the prior art comprises the following steps: round steel blanking, heating, upsetting by an 800T press, drawing, rolling and forming, rough machining, performance heat treatment, sampling, performance inspection and warehousing and shipping. However, the conventional forging forming method is applied to the nuclear power forge piece, so that the forging difficulty is high, the materials cannot be saved, and the cost is increased.
Disclosure of Invention
The invention aims to provide a forging forming method of a 1Cr15Ni36W3Ti stainless steel nuclear power forge piece, which aims to solve the problems that the forging difficulty of the nuclear power forge piece is high, materials cannot be saved, and the cost is increased in the prior art.
In order to solve the problems, the invention provides the following technical scheme:
a forging forming method of a 1Cr15Ni36W3Ti stainless steel nuclear power forge piece comprises the following steps:
s1, blanking round steel to obtain a bar stock;
s2, heating: placing the bar stock into a gas furnace, heating to 1180+/-20 ℃, and preserving heat for 2.5-3 hours;
s3, upsetting, reverse drawing, reverse upsetting and rounding of the bar to obtain a blank;
s4, machining the core part of the blank to be empty, and machining the outer circle to a certain size;
s5, heat treatment: controlling the solid solution temperature to be 1080-1100 ℃, preserving the heat for 1-1.5 h, and then cooling with water; the annealing temperature is controlled to 840-860 ℃ for the 1 st time, and air cooling is carried out after heat preservation for 10-12 h; the temperature of the 2 nd fire is controlled to 690-710 ℃, and the air cooling is carried out after the heat preservation is carried out for 28-30 h.
The invention has the working principle and beneficial effects that: compared with the prior art, the main deformation direction is controlled by different forming modes, the mechanical properties of the main deformation direction reach the specified values after the main deformation direction is subjected to heat treatment by the same heat treatment method, and compared with the conventional forging method, the main deformation direction is more saved in material consumption and cost.
Further, S6: sampling and checking performance.
Further, S5, heat treatment: controlling the solid solution temperature to 1080 ℃, preserving the heat for 1h and then cooling the solution by water; the annealing temperature is controlled to 840 ℃ for the 1 st time, and air cooling is carried out after heat preservation for 10 hours; the temperature of the 2 nd fire is controlled to 690 ℃, and the air cooling is carried out after the heat preservation for 28 h.
Further, S5, heat treatment: controlling the solid solution temperature to 1090 ℃, preserving the heat for 1.25h, and then cooling with water; the annealing temperature of the 1 st time is controlled to 850 ℃, and the air cooling is carried out after the heat preservation for 11 hours; controlling the temperature of the 2 nd fire to 700 ℃, preserving heat for 29 hours and then air cooling
Further, S5, heat treatment: controlling the solid solution temperature to 1100 ℃, preserving the heat for 1.5 hours, and then cooling with water; the annealing temperature is controlled to 860 ℃ for the 1 st time, and air cooling is carried out after heat preservation for 12 hours; controlling the temperature of 710 ℃ for the 2 nd fire, and air-cooling after heat preservation for 30 h.
Further, the step S2 of heating: the bar stock is put into a gas furnace to be heated to 1180 ℃ and kept for 2.5h.
Drawings
FIG. 1 is an upset reverse draw graph of an embodiment;
FIG. 2 is a reverse upsetting plot of an embodiment;
FIG. 3 is a spheronization diagram of an embodiment;
FIG. 4 is a final product diagram;
FIG. 5 is an upset chart of the comparative example;
FIG. 6 is an elongation chart of a comparative example;
fig. 7 is a spheronization diagram of the comparative example.
Detailed Description
The following is a further detailed description of the embodiments:
examples: a forging forming method of a 1Cr15Ni36W3Ti stainless steel nuclear power forge piece comprises the following steps,
s1, blanking round steel to obtain bar stock (phi 230 multiplied by 360mm, 118 kg); s2, heating: putting the bar stock into a gas furnace, heating to 1180 ℃, and preserving heat for 2.5h; s3, upsetting, reverse drawing, reverse upsetting and rounding of the bar to obtain a blank; s4, machining the core part of the blank to be empty, and machining the outer circle to a certain size; s5, heat treatment: controlling the solid solution temperature to 1090 ℃, preserving the heat for 1h, and then cooling with water; the annealing temperature is controlled to 850 ℃ for the 1 st time, and the air cooling is carried out after the heat preservation for 10 hours; controlling the temperature of the fire at 700 ℃ for the 2 nd time, and air-cooling after heat preservation for 30 hours; s5, sampling and checking performances. The following data are obtained, see table 1:
TABLE 1
S3, upsetting the bar, reversely drawing, reversely upsetting and rounding to obtain a blank, and referring to figures 1-3. S4, machining the core of the blank to be empty, and machining the outer circle of the blank to a certain size, wherein the product is shown in FIG. 4.
Comparative example: s1, blanking round steel to obtain bar stock (phi 230 multiplied by 500mm and 163 kg); s2, heating: putting the bar stock into a gas furnace, heating to 1180 ℃, and preserving heat for 2.5h; s3, upsetting, drawing and rounding the bar stock to obtain a blank; s4, machining the core part of the blank to be empty, and machining the outer circle to a certain size; s5, heat treatment: controlling the solid solution temperature to 1090 ℃, preserving the heat for 1h, and then cooling with water; the annealing temperature is controlled to 850 ℃ for the 1 st time, and the air cooling is carried out after the heat preservation for 10 hours; controlling the temperature of the fire at 700 ℃ for the 2 nd time, and air-cooling after heat preservation for 30 hours; s5, sampling and checking performances. The following data are obtained, see table 2:
TABLE 2
S3, upsetting, drawing and rounding the bar to obtain a blank, and referring to figures 5-7. S4, processing the core part of the blank to be empty, and processing the outer circle to a certain size to obtain the same product as that in FIG. 4.
The specified mechanical properties are referred to in Table 3:
TABLE 3 Table 3
As can be seen by comparing the data in tables 1, 2 and 3, the forging produced in the examples meets the mechanical property requirement, and in order to produce the forging with the same specification, the bars (phi 230×500mm and 163 kg) adopted in the examples are far larger than the bars (phi 230×360mm and 118 kg) adopted in the examples, the materials are saved by 45 kg/piece in the examples compared with the comparative examples, and the materials are saved by more in the examples when the subsequent multiple pieces are produced.
It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the technical spirit of the invention, and these should also be considered as the scope of the invention, which does not affect the effect of the invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (6)
1. A forging forming method of a 1Cr15Ni36W3Ti stainless steel nuclear power forge piece is characterized by comprising the following steps:
s1, blanking round steel to obtain a bar stock;
s2, heating: placing the bar stock into a gas furnace, heating to 1180+/-20 ℃, and preserving heat for 2.5-3 hours;
s3, upsetting, reverse drawing, reverse upsetting and rounding of the bar to obtain a blank;
s4, machining the core part of the blank to be empty, and machining the outer circle to a certain size;
s5, heat treatment: controlling the solid solution temperature to be 1080-1100 ℃, preserving the heat for 1-1.5 h, and then cooling with water; the annealing temperature is controlled to 840-860 ℃ for the 1 st time, and air cooling is carried out after heat preservation for 10-12 h; the temperature of the 2 nd fire is controlled to 690-710 ℃, and the air cooling is carried out after the heat preservation is carried out for 28-30 h.
2. The forging forming method of the 1Cr15Ni36W3Ti stainless steel nuclear power forge piece according to claim 1, further comprising S6: sampling and checking performance.
3. The forging forming method of the 1Cr15Ni36W3Ti stainless steel nuclear power forge piece according to claim 1, wherein the forging forming method is characterized by S5, heat treatment: controlling the solid solution temperature to 1080 ℃, preserving the heat for 1h and then cooling the solution by water; the annealing temperature is controlled to 840 ℃ for the 1 st time, and air cooling is carried out after heat preservation for 10 hours; the temperature of the 2 nd fire is controlled to 690 ℃, and the air cooling is carried out after the heat preservation for 28 h.
4. The forging forming method of the 1Cr15Ni36W3Ti stainless steel nuclear power forge piece according to claim 1, wherein the forging forming method is characterized by S5, heat treatment: controlling the solid solution temperature to 1090 ℃, preserving the heat for 1.25h, and then cooling with water; the annealing temperature of the 1 st time is controlled to 850 ℃, and the air cooling is carried out after the heat preservation for 11 hours; controlling the temperature of the fire at 700 ℃ for the 2 nd time, and air cooling after preserving the heat for 29 hours.
5. The forging forming method of the 1Cr15Ni36W3Ti stainless steel nuclear power forge piece according to claim 1, wherein the forging forming method is characterized by S5, heat treatment: controlling the solid solution temperature to 1100 ℃, preserving the heat for 1.5 hours, and then cooling with water; the annealing temperature is controlled to 860 ℃ for the 1 st time, and air cooling is carried out after heat preservation for 12 hours; controlling the temperature of 710 ℃ for the 2 nd fire, and air-cooling after heat preservation for 30 h.
6. The forging forming method of the 1Cr15Ni36W3Ti stainless steel nuclear power forge piece according to any one of claims 1 to 5, wherein the steps of S2 and heating are as follows: the bar stock is put into a gas furnace to be heated to 1180 ℃ and kept for 2.5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311840181.4A CN117733048A (en) | 2023-12-28 | 2023-12-28 | Forging forming method of 1Cr15Ni36W3Ti stainless steel nuclear power forge piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311840181.4A CN117733048A (en) | 2023-12-28 | 2023-12-28 | Forging forming method of 1Cr15Ni36W3Ti stainless steel nuclear power forge piece |
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| Publication Number | Publication Date |
|---|---|
| CN117733048A true CN117733048A (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311840181.4A Pending CN117733048A (en) | 2023-12-28 | 2023-12-28 | Forging forming method of 1Cr15Ni36W3Ti stainless steel nuclear power forge piece |
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| Country | Link |
|---|---|
| CN (1) | CN117733048A (en) |
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- 2023-12-28 CN CN202311840181.4A patent/CN117733048A/en active Pending
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