CN105936963A - Stainless steel forge piece forging technology - Google Patents
Stainless steel forge piece forging technology Download PDFInfo
- Publication number
- CN105936963A CN105936963A CN201610512429.8A CN201610512429A CN105936963A CN 105936963 A CN105936963 A CN 105936963A CN 201610512429 A CN201610512429 A CN 201610512429A CN 105936963 A CN105936963 A CN 105936963A
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- CN
- China
- Prior art keywords
- stainless steel
- temperature
- forging
- forging temperature
- austenitic stainless
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a stainless steel forge piece forging technology. The forging technology comprises the following steps: determining the forging temperature, wherein the initial forging temperature of martensite stainless steel is 1150 DEG C, the final forging temperature depends on the carbon content: the final forging temperature is in a range of 800 to 900 DEG C if the carbon content is high, the final forging temperature is in a range of 800 to 850 DEG C, if the carbon content is low; the initial forging temperature of austenitic stainless steel is in a range of 1150 to 1180 DEG C, the final forging temperature of austenitic stainless steel is in a range of 800 to 850 DEG C, large rolling reduction is adopted at a high temperature, and no bending happens during the upsetting process; and carrying out a post-forging treatment, wherein martensite stainless steel should be slowly cooled to a temperature of 600 DEG C or less and then cooled in the air, furthermore, martensite stainless steel should be annealed in a furnace within 8 hours to prevent the generation of cracks. The ferrite-austenitic stainless steel should be quickly cooled to prevent crystal growth and carbide precipitation so as not to influence the anti-corrosion performance.
Description
Technical field
The present invention relates to sinter forging technique, be specifically related to stainless steel forgings Forging Technology.
Background technology
Rustless steel is i.e. resistant material, can do again heat proof material, it is also possible to doing cryogenic material can also do
Non-magnetic material, chemically sees on composition, and the content of rustless steel chromium is general all more than 12%, additionally possibly together with
One or more other alloying elements, by the combined influence of contained alloy, create three basic forms of it not
Rust steel, i.e. ferrite type, Austenitic, martensite type, also have other between three types stainless
Steel.
Ferrite phosphorus content is relatively low, big between ferrite area, and after heating, five phase transformations produce, but it is corrosion-resistant
Property not as austenitic stainless steel, but the middle temperature of its high temperature has fragility, and Grain growth trend is serious, has a strong impact on
The range of application of ferritic stainless steel.
Summary of the invention
For solving technical problem described in background technology, the present invention by the following technical solutions: stainless steel forgings
Forging Technology, it comprises the following steps:
1) determination of forging temperature: the initial forging temperature of martensitic stain less steel takes 1150 DEG C, and final forging temperature is with carbon containing
Amount and different, high-carbon temperature takes 800-900 DEG C, and low-carbon (LC) temperature takes 800-850 DEG C；Austenitic stainless steel begins to forge temperature
Degree is general at 1150-1180 DEG C, and final forging temperature is typically at 800-850 DEG C；
2) using heavy reduction during high temperature, can not bend during jumping-up, bending needs correct jumping-up again after melting down,
Avoiding inhomogeneous deformation, the deflection of last fire is sufficiently large as far as possible, and martensitic stain less steel takes forging ratio 1.8
Above, ferrite, austenitic stainless steel take more than 2.0；
3) forging post processing: air cooling after slow cooling to less than 600 DEG C answered by martensitic stain less steel, additionally will be within 8h
Shove charge is annealed, and prevents crackle from producing；To ferrite austenitic stainless steel require rapid cooling, it is to avoid crystal grain grow up and
Carbide Precipitation is poly-, affects corrosion resistance.
The invention has the beneficial effects as follows: austenitic stainless steel, either at room temperature or high temperature, remains difficult to understand
Family name soma, five heat treatment reinforcements, generally use under admittedly melting state, there is good moulding, toughness
And good processing characteristics, also there is good corrosion resistance and non-oxidizability, so austenitic stainless steel
Typically require corrosion-resistant that antioxidation or work at higher temperatures is not the highest to requirement of strength；
Martensitic stain less steel is organized as austenite when high temperature, and being cooled to room temperature is martensite, can heat treatment strong
Changing, but the corrosion resistance of this kind of steel is not as ferritic stainless steel and austenitic stainless steel, intensity hardness is with carbon containing
Amount increase and improve, moulding toughness declines therewith.
Detailed description of the invention
Embodiment one
Stainless steel forgings Forging Technology, it comprises the following steps:
1) determination of forging temperature: the initial forging temperature of martensitic stain less steel takes 1150 DEG C, and final forging temperature is with carbon containing
Amount and different, high-carbon temperature takes 800-900 DEG C, and low-carbon (LC) temperature takes 800-850 DEG C；Austenitic stainless steel begins to forge temperature
Degree is general at 1150-1180 DEG C, and final forging temperature is typically at 800-850 DEG C；
2) using heavy reduction during high temperature, can not bend during jumping-up, bending needs correct jumping-up again after melting down,
Avoiding inhomogeneous deformation, the deflection of last fire is sufficiently large as far as possible, and martensitic stain less steel takes forging ratio 1.8
Above, ferrite, austenitic stainless steel take more than 2.0；
3) forging post processing: air cooling after slow cooling to less than 600 DEG C answered by martensitic stain less steel, additionally will be within 8h
Shove charge is annealed, and prevents crackle from producing；To ferrite austenitic stainless steel require rapid cooling, it is to avoid crystal grain grow up and
Carbide Precipitation is poly-, affects corrosion resistance.
Claims (1)
1. stainless steel forgings Forging Technology, it is characterised in that it comprises the following steps:
1) determination of forging temperature: the initial forging temperature of martensitic stain less steel takes 1150 DEG C, and final forging temperature is with carbon containing
Amount and different, high-carbon temperature takes 800-900 DEG C, and low-carbon (LC) temperature takes 800-850 DEG C；Austenitic stainless steel begins to forge temperature
Degree is general at 1150-1180 DEG C, and final forging temperature is typically at 800-850 DEG C；
2) using heavy reduction during high temperature, can not bend during jumping-up, bending needs correct jumping-up again after melting down,
Avoiding inhomogeneous deformation, the deflection of last fire is sufficiently large as far as possible, and martensitic stain less steel takes forging ratio 1.8
Above, ferrite, austenitic stainless steel take more than 2.0；
3) forging post processing: air cooling after slow cooling to less than 600 DEG C answered by martensitic stain less steel, additionally will be within 8h
Shove charge is annealed, and prevents crackle from producing；To ferrite austenitic stainless steel require rapid cooling, it is to avoid crystal grain grow up and
Carbide Precipitation is poly-, affects corrosion resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610512429.8A CN105936963A (en) | 2016-06-30 | 2016-06-30 | Stainless steel forge piece forging technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610512429.8A CN105936963A (en) | 2016-06-30 | 2016-06-30 | Stainless steel forge piece forging technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105936963A true CN105936963A (en) | 2016-09-14 |
Family
ID=56872875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610512429.8A Pending CN105936963A (en) | 2016-06-30 | 2016-06-30 | Stainless steel forge piece forging technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105936963A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107937828A (en) * | 2017-12-01 | 2018-04-20 | 宝鼎科技股份有限公司 | F6NM martensitic stain less steels cylinder forgings and heat treatment method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101323901A (en) * | 2007-06-12 | 2008-12-17 | 上海重型机器锻件厂 | Austenitic stainless steel as-forged solid solution treatment process after forging |
-
2016
- 2016-06-30 CN CN201610512429.8A patent/CN105936963A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101323901A (en) * | 2007-06-12 | 2008-12-17 | 上海重型机器锻件厂 | Austenitic stainless steel as-forged solid solution treatment process after forging |
Non-Patent Citations (4)
| Title |
|---|
| 程里等: "《锻工速成与提高》", 31 October 2008 * |
| 道修半缘: ""不锈钢的锻造工艺（马氏体、奥氏体）"", 《百度文库》 * |
| 陈志芳等: ""奥氏体不锈钢锻造及固溶处理的研究"", 《技术与市场》 * |
| 陈诗荪等: ""对不锈钢锻造工艺问题的探讨"", 《航空工艺技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107937828A (en) * | 2017-12-01 | 2018-04-20 | 宝鼎科技股份有限公司 | F6NM martensitic stain less steels cylinder forgings and heat treatment method |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160914 |