CN104531960A - 9SiCr steel circular die isothermal spheroidizing process - Google Patents
9SiCr steel circular die isothermal spheroidizing process Download PDFInfo
- Publication number
- CN104531960A CN104531960A CN201410786508.9A CN201410786508A CN104531960A CN 104531960 A CN104531960 A CN 104531960A CN 201410786508 A CN201410786508 A CN 201410786508A CN 104531960 A CN104531960 A CN 104531960A
- Authority
- CN
- China
- Prior art keywords
- 9sicr
- circular die
- 9sicr steel
- steel circular
- isothermal spheroidizing
- 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
Links
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
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
Abstract
The invention provides a 9SiCr steel circular die isothermal spheroidizing process. The isothermal spheroidizing process comprises the following steps: preprocessing a 9SiCr steel circular die and carrying out isothermal spheroidizing treatment; firstly, gradually heating the 9SiCr steel circular die to 800-810 DEG C and preserving heat for 2-4hr; then, gradually cooling the 9SiCr steel circular die to 700-720 DEG C and preserving heat for 6-8hr; and cooling the 9SiCr steel circular die to 500 DEG C, and finally discharging the 9SiCr steel circular die out of a furnace and air-cooling. By virtue of the 9SiCr steel circular die isothermal spheroidizing process disclosed by the invention, the strength, ductility and tenacity of steel are improved.
Description
Technical field
The present invention relates to a kind of 9SiCr steel round die isothermal spheroidizing technique, belong to field of mechanical technique.
Background technology
Be to reduce hardness, be convenient to machining to the object that metal is heat-treated.Ferritic matrix is uniformly distributed small-particle carbide, does not allow to occur carbide that is netted or bulk, otherwise will the performance after quenching be had a strong impact on, the intensity of steel, plasticity and toughness are declined.
Summary of the invention
The invention provides a kind of 9SiCr steel round die isothermal spheroidizing technique, the strength plastic of steel and toughness are increased.
For solving above technical problem, the invention provides following technical scheme: a kind of 9SiCr steel round die isothermal spheroidizing technique, 9SiCr steel round die is carried out the process of isothermal isothermal spheroidizing after the pre-treatment again; First 9SiCr steel round die is progressively heated to 800-810 DEG C, insulation 2-4h; Again 9SiCr steel circle tooth is progressively cooled between 700-720 DEG C and be incubated 6-8h; Again 9SiCr steel round die is cooled to 500 DEG C, air cooling of finally coming out of the stove.
This 9SiCr steel round die isothermal spheroidizing technique that the present invention relates to, makes the strength plastic of steel and toughness increase.
Embodiment
A kind of 9SiCr steel round die isothermal spheroidizing technique, carries out the process of isothermal isothermal spheroidizing after the pre-treatment again by 9SiCr steel round die; First 9SiCr steel round die is progressively heated to 800-810 DEG C, insulation 2-4h; Again 9SiCr steel circle tooth is progressively cooled between 700-720 DEG C and be incubated 6-8h; Again 9SiCr steel round die is cooled to 500 DEG C, air cooling of finally coming out of the stove.
This 9SiCr steel round die isothermal spheroidizing technique that the present invention relates to, makes the strength plastic of steel and toughness increase.
Embodiment of the present invention does not form the restriction to the application's scope; within every spirit in the present invention's design and principle, any amendment that one of skill in the art can make, equivalent to replace and improvement etc. all should be included within protection scope of the present invention.
Claims (1)
1. a 9SiCr steel round die isothermal spheroidizing technique, is characterized in that, 9SiCr steel round die is carried out the process of isothermal isothermal spheroidizing after the pre-treatment again; First 9SiCr steel round die is progressively heated to 800-810 DEG C, insulation 2-4h; Again 9SiCr steel circle tooth is progressively cooled between 700-720 DEG C and be incubated 6-8h; Again 9SiCr steel round die is cooled to 500 DEG C, air cooling of finally coming out of the stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410786508.9A CN104531960A (en) | 2014-12-18 | 2014-12-18 | 9SiCr steel circular die isothermal spheroidizing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410786508.9A CN104531960A (en) | 2014-12-18 | 2014-12-18 | 9SiCr steel circular die isothermal spheroidizing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104531960A true CN104531960A (en) | 2015-04-22 |
Family
ID=52847578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410786508.9A Pending CN104531960A (en) | 2014-12-18 | 2014-12-18 | 9SiCr steel circular die isothermal spheroidizing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104531960A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000248313A (en) * | 1999-02-26 | 2000-09-12 | Daido Steel Co Ltd | Spheroidizing heat treatment of steel slab |
| CN102230062A (en) * | 2011-06-10 | 2011-11-02 | 西南交通大学 | Heat treatment process for improving strength and toughness of 9SiCr die steel |
-
2014
- 2014-12-18 CN CN201410786508.9A patent/CN104531960A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000248313A (en) * | 1999-02-26 | 2000-09-12 | Daido Steel Co Ltd | Spheroidizing heat treatment of steel slab |
| CN102230062A (en) * | 2011-06-10 | 2011-11-02 | 西南交通大学 | Heat treatment process for improving strength and toughness of 9SiCr die steel |
Non-Patent Citations (4)
| Title |
|---|
| 中国机械工程学会塑性工程学会: "《锻压手册》", 30 November 2013 * |
| 孙鼎伦 等: "《机械工程材料学》", 30 November 1992 * |
| 武建军 等: "《机械工程材料 （第2版）》", 31 May 2014 * |
| 浙江大学 等: "《钢铁材料及其热处理工艺》", 28 February 1978 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |