CN103667643A - Heat treatment process for improving strength of PH13-8Mo stainless steel material - Google Patents
Heat treatment process for improving strength of PH13-8Mo stainless steel material Download PDFInfo
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Abstract
The invention provides a heat treatment process for improving strength of a PH13-8Mo stainless steel material. The heat treatment process can transform more residual austenite into martensite, so as to improve the strength of the PH13-8Mo stainless steel material. The heat treatment process comprises the steps of carrying out solution treatment on the PH13-8Mo stainless steel material firstly and then carrying out aging treatment of the PH13-8Mo stainless steel material; the heat treatment process is characterized in that: cold treatment is performed on the PH13-8Mo stainless steel material between the solution treatment and the aging treatment.
Description
Technical field
The present invention relates to the large blade thermal treatment process of steam turbine field, especially relate to the thermal treatment process field of the large blade of PH13-8Mo material steam turbine, be specially a kind of thermal treatment process of the PH13-8Mo of the raising strength of materials.
Background technology
PH13-8Mo stainless steel is U.S.'s PH Stainless Steel, and it is a kind of high strength martensitic PH Stainless Steel that adopts two vacuum metlings.The outstanding feature of this steel is except high intensity, still there is good fracture toughness property, good transverse mechanical performance and the anticorrosion stress-resistant performance in ocean environment, this stainless material is due to good over-all properties, aerospace, nuclear reactor and field of petrochemical industry have been widely used in, as cold heading and machining fastening piece, aircraft components, reactor component and petrochemical complex equipment.But, because Ms point and the Mf point of PH13-8Mo stainless material are lower, therefore at room temperature can not make austenite be transformed into martensite completely.
Summary of the invention
For the problems referred to above, the invention provides a kind of thermal treatment process of the PH13-8Mo of raising stainless material intensity, it can make the austenitic transformation of more remnants become martensite, thereby improves PH13-8Mo stainless material intensity.
Its technical scheme is such, first it carry out solution treatment to PH13-8Mo stainless material, again described PH13-8Mo stainless material is carried out to ageing treatment, it is characterized in that: between described solution treatment and ageing treatment, described PH13-8Mo stainless material is carried out to deepfreeze.
It is further characterized in that:
Described cold treatment process is to adopt the method for liquid nitrogen gasification to carry out deepfreeze to described PH13-8Mo stainless material;
Described deepfreeze temperature is-1～-50 ℃;
Described deepfreeze soaking time is 30～120 minutes.
Its more a step be characterised in that:
Described solid solution treatment process is that 925 ℃ of solid solubility temperatures, are incubated air-cooled after 1 hour;
Described aging treatment process is that timeliness Heating temperature is 530 ℃～550 ℃, is incubated air cooling after 4 hours.
The beneficial effect of technique of the present invention is: it has increased cold treatment process to PH13-8Mo stainless material between solution treatment and ageing treatment, because Ms and the Mf point of PH13-8Mo material are lower, under room temperature, can not make austenite be transformed into martensite completely, therefore increase deepfreeze operation, can make more Transformation of Retained Austenite is martensite, thereby makes steel strengthening; And adopting the method for liquid nitrogen gasification to carry out deepfreeze to described PH13-8Mo stainless material, the rate of cooling of more traditional mixture of ice and water cold treatment method is high, simple to operate, can greatly enhance productivity; And because PH13-8Mo stainless material is for deepfreeze temperature-insensitive, and its Transformation of Retained Austenite is that martensitic incubation period is shorter, temperature and the soaking time of controlling liquid nitrogen deepfreeze can further reduce production costs, enhance productivity.
Embodiment
Embodiment mono-:
First PH13-8Mo stainless material is carried out to solution treatment, 925 ℃ of solid solubility temperatures, are incubated air-cooled after 1 hour; Then adopt the method for liquid nitrogen gasification to carry out deepfreeze to described PH13-8Mo stainless material, liquid nitrogen gasification deepfreeze temperature is-1 ℃, and deepfreeze soaking time is 30 minutes; Finally again PH13-8Mo stainless material is carried out to ageing treatment, timeliness Heating temperature is 540 ℃, is incubated air cooling after 4 hours.
Embodiment bis-:
First PH13-8Mo stainless material is carried out to solution treatment, 925 ℃ of solid solubility temperatures, are incubated air-cooled after 1 hour; Then adopt the method for liquid nitrogen gasification to carry out deepfreeze to described PH13-8Mo stainless material, liquid nitrogen gasification deepfreeze temperature is-50 ℃, and deepfreeze soaking time is 120 minutes; Finally again PH13-8Mo stainless material is carried out to ageing treatment, timeliness Heating temperature is 550 ℃, is incubated air cooling after 4 hours.
Embodiment tri-:
First PH13-8Mo stainless material is carried out to solution treatment, 925 ℃ of solid solubility temperatures, are incubated air-cooled after 1 hour; Then adopt the method for liquid nitrogen gasification to carry out deepfreeze to described PH13-8Mo stainless material, liquid nitrogen gasification deepfreeze temperature is-26 ℃, and deepfreeze soaking time is 75 minutes; Finally again PH13-8Mo stainless material is carried out to ageing treatment, timeliness Heating temperature is 530 ℃, is incubated air cooling after 4 hours.
Claims (6)
1. a thermal treatment process that improves PH13-8Mo stainless material intensity, first it carry out solution treatment to PH13-8Mo stainless material, again described PH13-8Mo stainless material is carried out to ageing treatment, it is characterized in that: between described solution treatment and ageing treatment, described PH13-8Mo stainless material is carried out to deepfreeze.
2. a kind of thermal treatment process that improves PH13-8Mo stainless material intensity according to claim 1, is characterized in that: described cold treatment process is to adopt the method for liquid nitrogen gasification to carry out deepfreeze to described PH13-8Mo stainless material.
3. a kind of thermal treatment process that improves PH13-8Mo stainless material intensity according to claim 2, is characterized in that: described deepfreeze temperature is-1～-50 ℃.
4. a kind of thermal treatment process that improves PH13-8Mo stainless material intensity according to claim 3, is characterized in that: described deepfreeze soaking time is 30～120 minutes.
5. a kind of thermal treatment process that improves PH13-8Mo stainless material intensity according to claim 4, is characterized in that: described solid solution treatment process is that 925 ℃ of solid solubility temperatures, are incubated air-cooled after 1 hour.
6. according to a kind of thermal treatment process that improves PH13-8Mo stainless material intensity described in claim 4 or 5, it is characterized in that: described aging treatment process is that timeliness Heating temperature is 530 ℃～550 ℃, is incubated air cooling after 4 hours.
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| CN201310672533.XA CN103667643A (en) | 2013-12-12 | 2013-12-12 | Heat treatment process for improving strength of PH13-8Mo stainless steel material |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104372136A (en) * | 2014-11-14 | 2015-02-25 | 无锡阳工机械制造有限公司 | Thermal treatment method for PH13-8Mo stainless steel |
| CN104372137A (en) * | 2014-11-14 | 2015-02-25 | 无锡阳工机械制造有限公司 | Thermal treatment method for PH13-8Mo stainless steel |
| CN105479104A (en) * | 2015-12-08 | 2016-04-13 | 合肥工业大学 | Machining method of slender shaft made of17-4PH stainless steel material |
| CN105648172A (en) * | 2014-11-14 | 2016-06-08 | 陕西飞机工业（集团）有限公司 | Heat treatment process method for 0Cr13Ni8Mo2Al steel |
| CN106167850A (en) * | 2016-08-30 | 2016-11-30 | 陕西千山航空电子有限责任公司 | A kind of 23Co14ni12cr3mo Heat-Treatment of Steel method |
| CN106282833A (en) * | 2016-08-18 | 2017-01-04 | 江苏锦阳不锈钢制品有限公司 | A kind of anti-corrosion and high strength stainless steel material and manufacture method thereof |
| CN106755856A (en) * | 2016-12-01 | 2017-05-31 | 贵州安大航空锻造有限责任公司 | 0Cr13Ni8Mo2Al precipitation-hardening stainless steel cold treatment methods |
| CN108165714A (en) * | 2017-11-24 | 2018-06-15 | 哈尔滨汽轮机厂有限责任公司 | Improve the heat treatment process of 05Cr17Ni4Cu4Nb hardness of steel |
| CN110628997A (en) * | 2019-10-25 | 2019-12-31 | 贵州航天新力铸锻有限责任公司 | Heat treatment method for improving yield ratio of low-carbon martensite precipitation hardening stainless steel |
| CN110724797A (en) * | 2019-10-23 | 2020-01-24 | 成都飞机工业（集团）有限责任公司 | Method for processing aviation PH13-8Mo part |
| CN114790505A (en) * | 2022-04-14 | 2022-07-26 | 成都航利航空科技有限责任公司 | Solution heat treatment method for GH3044 bolt |
| CN115852111A (en) * | 2022-12-23 | 2023-03-28 | 西北工业大学 | Strengthening method of PH13-8Mo material |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104372136A (en) * | 2014-11-14 | 2015-02-25 | 无锡阳工机械制造有限公司 | Thermal treatment method for PH13-8Mo stainless steel |
| CN104372137A (en) * | 2014-11-14 | 2015-02-25 | 无锡阳工机械制造有限公司 | Thermal treatment method for PH13-8Mo stainless steel |
| CN105648172A (en) * | 2014-11-14 | 2016-06-08 | 陕西飞机工业（集团）有限公司 | Heat treatment process method for 0Cr13Ni8Mo2Al steel |
| CN105479104A (en) * | 2015-12-08 | 2016-04-13 | 合肥工业大学 | Machining method of slender shaft made of17-4PH stainless steel material |
| CN106282833A (en) * | 2016-08-18 | 2017-01-04 | 江苏锦阳不锈钢制品有限公司 | A kind of anti-corrosion and high strength stainless steel material and manufacture method thereof |
| CN106167850A (en) * | 2016-08-30 | 2016-11-30 | 陕西千山航空电子有限责任公司 | A kind of 23Co14ni12cr3mo Heat-Treatment of Steel method |
| CN106755856A (en) * | 2016-12-01 | 2017-05-31 | 贵州安大航空锻造有限责任公司 | 0Cr13Ni8Mo2Al precipitation-hardening stainless steel cold treatment methods |
| CN108165714A (en) * | 2017-11-24 | 2018-06-15 | 哈尔滨汽轮机厂有限责任公司 | Improve the heat treatment process of 05Cr17Ni4Cu4Nb hardness of steel |
| CN108165714B (en) * | 2017-11-24 | 2020-01-17 | 哈尔滨汽轮机厂有限责任公司 | Heat treatment process for improving strength of 05Cr17Ni4Cu4Nb steel |
| CN110724797A (en) * | 2019-10-23 | 2020-01-24 | 成都飞机工业（集团）有限责任公司 | Method for processing aviation PH13-8Mo part |
| CN110724797B (en) * | 2019-10-23 | 2022-05-06 | 成都飞机工业（集团）有限责任公司 | Method for processing aviation PH13-8Mo part |
| CN110628997A (en) * | 2019-10-25 | 2019-12-31 | 贵州航天新力铸锻有限责任公司 | Heat treatment method for improving yield ratio of low-carbon martensite precipitation hardening stainless steel |
| CN114790505A (en) * | 2022-04-14 | 2022-07-26 | 成都航利航空科技有限责任公司 | Solution heat treatment method for GH3044 bolt |
| CN115852111A (en) * | 2022-12-23 | 2023-03-28 | 西北工业大学 | Strengthening method of PH13-8Mo material |
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Application publication date: 20140326 |