CN110846471A - Metal material with hard crystallization points - Google Patents
Metal material with hard crystallization points Download PDFInfo
- Publication number
- CN110846471A CN110846471A CN201910980655.2A CN201910980655A CN110846471A CN 110846471 A CN110846471 A CN 110846471A CN 201910980655 A CN201910980655 A CN 201910980655A CN 110846471 A CN110846471 A CN 110846471A
- Authority
- CN
- China
- Prior art keywords
- metal material
- crystallization points
- hard
- heat treatment
- hard crystallization
- 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.)
- Pending
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
-
- 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
- C21D1/34—Methods of heating
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/004—Dispersions; Precipitations
-
- 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
- C21D2221/00—Treating localised areas of an article
Abstract
The invention relates to a metal material with hard crystallization points, which is suitable for high-temperature parts of an aeroengine and occasions for improving the mechanical properties of the parts. Known metal material processing is due to limitations in the physical properties of the metal itself. In particular, when a high-temperature-resistant metal part having a large geometric size is machined, the part is easily cracked when the heat-resistant temperature is increased, and the heat-resistant temperature of the part is significantly lowered when the mechanical properties of the part are improved. So that the use function of the product is limited. After the product part is machined, the surface of the product part is further subjected to a heat treatment production process of instant point heating and instant local cooling, so that hard crystallization points are generated on the surface of the part, the hard crystallization points generated on the surface of the part have a certain geometric distribution structure, the internal stress generated in the point heat treatment process of the part can be approximately ignored, and the mechanical property of the product part is improved and the working temperature of the part is obviously improved due to the fact that the hard crystallization points have certain density. The spot heating is preferably a laser heating method.
Description
Technical Field
The invention relates to a metal material with hard crystallization points, which is suitable for high-temperature components of aviation and aerospace engines and various occasions for improving the high-temperature resistance of product components; the method is also suitable for occasions for further improving the mechanical property of product parts.
Background
At present, the known metal material processing adopts smelting extraction, and then metal is made into the metal material with certain performance by various processing methods. In the metal processing process, due to the characteristics of metal, the processed metal material sometimes cannot meet the functional requirements of products. In particular, when a high-temperature-resistant metal part having a large geometric size is machined, the part is easily cracked when the heat-resistant temperature is increased, and the heat-resistant temperature of the part is significantly lowered when the mechanical properties of the part are improved. So that the use function of the product is limited.
Disclosure of Invention
The invention provides a metal material with hard crystallization points, which aims at the defects of heat-resistant temperature and mechanical property technical parameters of product parts processed by the existing metal material.
The technical scheme adopted by the invention for solving the technical problems is as follows: the metal material with hard crystallization points is produced by a heat treatment production process of further instant point heating and instant local cooling on the surface of a product part after the product part is processed, so that the surface of the part is provided with the hard crystallization points, and is characterized in that: the hard crystallization points generated on the surface of the part have a certain geometric distribution structure, so that the internal stress generated by the part in the point heat treatment process can be approximately ignored, and the hard crystallization points have certain density, so that the mechanical property of the product part is improved, the working temperature of the part is obviously improved, and the mechanical property and the working temperature of the metal material with the hard crystallization points are improved.
The invention has the beneficial effects that: the defect that the working temperature of the existing components such as the blades of the aerospace and aeroengines is obviously insufficient is overcome; contributes a part of force for the development of aerospace and aviation in China to surpass the leading level of the world.
Detailed Description
Preferably: the laser spot heating is adopted, and liquid or gas such as constant-temperature water, liquid nitrogen and the like can be adopted as cooling media to finish the instant spot heating according to different materials of metal materials; a heat treatment production process of instant local cooling. Realizing the processing and manufacturing of the metal material with hard crystallization points.
Claims (2)
1. The metal material with hard crystallization points is composed of main materials of metal and metal alloy, and is characterized in that after a product part is processed, the surface of the product part is further subjected to a heat treatment production process of instant point heating and instant local cooling to generate the hard crystallization points on the surface of the part, wherein the heat treatment production process comprises the following steps: hard crystallization points generated on the surface of the part have a certain geometric distribution structure, so that the internal stress generated by the part in the point heat treatment process can be approximately ignored, and the mechanical property of the product part is improved because the hard crystallization points have certain density; meanwhile, the working temperature of the part is obviously improved, and the metal material with hard crystallization points has obvious mechanical property and working temperature improvement compared with the metal material without point heat treatment.
2. The metal material with hard crystal grains as set forth in claim 1, wherein: laser spot heating is adopted, and constant-temperature water and liquid nitrogen can be adopted according to different materials of metal materials; the liquid and the gas are used as cooling media to complete the heat treatment production process of instant point heating and instant local cooling, and the processing and the manufacturing of the metal material with the hard crystallization point are realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910980655.2A CN110846471A (en) | 2019-10-14 | 2019-10-14 | Metal material with hard crystallization points |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910980655.2A CN110846471A (en) | 2019-10-14 | 2019-10-14 | Metal material with hard crystallization points |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110846471A true CN110846471A (en) | 2020-02-28 |
Family
ID=69596447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910980655.2A Pending CN110846471A (en) | 2019-10-14 | 2019-10-14 | Metal material with hard crystallization points |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110846471A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033393A (en) * | 1971-03-08 | 1977-07-05 | Eaton Corporation | Self-locking fastener |
| CN102242360A (en) * | 2011-06-24 | 2011-11-16 | 吉林大学 | Method for bionic coupling of strengthened and toughened mechanical parts |
| CN205133680U (en) * | 2015-01-19 | 2016-04-06 | 张家港福克斯激光科技有限公司 | A laser hardening machine for rail surface strengthening |
| CN107574287A (en) * | 2017-09-18 | 2018-01-12 | 江苏省精密模具产品质量监督检验中心 | A kind of surface laser quenching has the mould processing technology of Non-smooth surface cell cube |
-
2019
- 2019-10-14 CN CN201910980655.2A patent/CN110846471A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033393A (en) * | 1971-03-08 | 1977-07-05 | Eaton Corporation | Self-locking fastener |
| CN102242360A (en) * | 2011-06-24 | 2011-11-16 | 吉林大学 | Method for bionic coupling of strengthened and toughened mechanical parts |
| CN205133680U (en) * | 2015-01-19 | 2016-04-06 | 张家港福克斯激光科技有限公司 | A laser hardening machine for rail surface strengthening |
| CN107574287A (en) * | 2017-09-18 | 2018-01-12 | 江苏省精密模具产品质量监督检验中心 | A kind of surface laser quenching has the mould processing technology of Non-smooth surface cell cube |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200228 |
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| WD01 | Invention patent application deemed withdrawn after publication |