CN103194584A - Heat treatment process of slender rod made of 45 steel - Google Patents
Heat treatment process of slender rod made of 45 steel Download PDFInfo
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- CN103194584A CN103194584A CN 201310112526 CN201310112526A CN103194584A CN 103194584 A CN103194584 A CN 103194584A CN 201310112526 CN201310112526 CN 201310112526 CN 201310112526 A CN201310112526 A CN 201310112526A CN 103194584 A CN103194584 A CN 103194584A
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Abstract
The invention relates to a heat treatment process of a slender rod made of 45 steel. The heat treatment process comprises quenching and tempering processes and is characterized in that the heating temperature for quenching is 820 DEG C-860 DEG C, the heating time is 3.8-4 seconds, a quenching medium is a sodium carbonate water solution with the content of 5%-6%, the heating temperature for tempering is 250 DEG C-260 DEG C, the heating time is 75 minutes, and furnace cooling is performed. The range of the heating temperature for quenching is wide, the quenching quality is reliable, the cracking of workpieces can be prevented, and the qualification rate of the workpieces is more than 90%.
Description
Technical field
The present invention relates to the heat treating method in a kind of mechanical workout, particularly a kind of 45 steel slender rod piece thermal treatment process.
Background technology
In the prior art, in to the cold thermal treatment process of dialling 45 steel slender rod pieces as diesel engine spiracle push rod etc., quenching temperature is that 850 ℃～870 ℃, 3.8～4 seconds heat-up times, quenchant are diesel oil; 230 ℃～250 ℃ of tempering Heating temperatures, 75 minutes heat-up times, take out and in air, cool off.Cracking phenomena appears in workpiece easily, and qualification rate only is about 70%.
Summary of the invention
The objective of the invention is in order to overcome above-mentioned weak point, and a kind of workpiece cracking, 45 steel slender rod piece thermal treatment process that qualification rate is high of preventing are provided.
For achieving the above object, the technical solution used in the present invention is: a kind of 45 steel slender rod piece thermal treatment process, comprise quenching, tempering process, it is characterized in that quenching temperature is that 820 ℃～860 ℃, 3.8～4 seconds heat-up times, quenchant are the aqueous sodium carbonate of content 5%～6%, 250 ℃～260 ℃ of tempering Heating temperatures, 75 minutes heat-up times, furnace cooling.
The present invention is owing to adopt above process modification, the quenching temperature wide ranges, and the quenching reliable in quality prevents the workpiece cracking, the workpiece qualification rate reaches more than 90%.
Embodiment
A kind of 45 steel slender rod piece thermal treatment process, comprise quenching, tempering process, wherein quenching temperature is that 820 ℃～860 ℃, 3.8～4 seconds heat-up times, quenchant are the aqueous sodium carbonate of content 5%～6%, 250 ℃～260 ℃ of tempering Heating temperatures, 75 minutes heat-up times, furnace cooling.
Claims (1)
1. steel slender rod piece thermal treatment process, comprise quenching, tempering process, it is characterized in that quenching temperature is that 820 ℃～860 ℃, 3.8～4 seconds heat-up times, quenchant are the aqueous sodium carbonate of content 5%～6%, 250 ℃～260 ℃ of tempering Heating temperatures, 75 minutes heat-up times, furnace cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310112526 CN103194584A (en) | 2013-04-02 | 2013-04-02 | Heat treatment process of slender rod made of 45 steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310112526 CN103194584A (en) | 2013-04-02 | 2013-04-02 | Heat treatment process of slender rod made of 45 steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103194584A true CN103194584A (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310112526 Pending CN103194584A (en) | 2013-04-02 | 2013-04-02 | Heat treatment process of slender rod made of 45 steel |
Country Status (1)
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| CN (1) | CN103194584A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945545A (en) * | 2016-06-15 | 2016-09-21 | 沈阳飞机工业（集团）有限公司 | Machining method for super-lathy rod expanding drill |
-
2013
- 2013-04-02 CN CN 201310112526 patent/CN103194584A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945545A (en) * | 2016-06-15 | 2016-09-21 | 沈阳飞机工业（集团）有限公司 | Machining method for super-lathy rod expanding drill |
| CN105945545B (en) * | 2016-06-15 | 2018-07-10 | 沈阳飞机工业（集团）有限公司 | A kind of processing method of ultrathin long rod reamer |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130710 |