CN103498026A - Quenching method of 45# steel workpiece - Google Patents
Quenching method of 45# steel workpiece Download PDFInfo
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- CN103498026A CN103498026A CN201310443032.4A CN201310443032A CN103498026A CN 103498026 A CN103498026 A CN 103498026A CN 201310443032 A CN201310443032 A CN 201310443032A CN 103498026 A CN103498026 A CN 103498026A
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Abstract
The invention provides a quenching method of a 45# steel workpiece. The quenching method comprises the following steps of: heating the workpiece to 880 DEG C-890 DEG C in a heating device, and preserving the heat for 1 hour-2 hours; quenching by using a quenching agent with temperature of 100 DEG C-120 DEG C, and tempering at 500 DEG C-510 DEG C, wherein the quenching agent consists of the following substances in percentage by mass: 5%-6% of potassium chloride, 1%-2% of sodium chloride and the balance of water. The 45# steel made by using the quenching method disclosed by the invention cannot crack during quenching.
Description
Technical field
The invention belongs to the material heat treatment technical field, be specifically related to a kind of quenching method of 45# steel workpiece.
Background technology
The 45# steel is now widely used a kind of carbon constructional quality steel, due to the 45# steel after modifier treatment, there is good comprehensive mechanical performance, while therefore making some vital part (being of a size of Φ 5-Φ 12), design paper mostly requires to select cold drawn 45 round steel to carry out modified (quenching+high tempering) and processes.
The quenching method of 45# steel at present commonly used is to be heated to 840-860 ℃ of brine quenching, 540 ℃ of tempering, and in such quench treatment, cold drawn 45 round steel often there will be the situation of hardening break, cause part to be scrapped.Once had up to a hundred the little axles that are of a size of Φ 8 to find quenching crack and scrap after thermal treatment, and up to a hundred screws that are of a size of Φ 6 have been found crackle and have scrapped after thermal treatment.This situation, go into operation often again whenever, and modifier treatment again causes the production cycle to extend, and also causes thermal treatment teams and groups scrap rate to increase.
Summary of the invention
In order to solve the problem of hardening break, the invention provides a kind of quenching method of 45# steel workpiece.
The invention provides a kind of quenching method of 45# steel workpiece, step is as follows: workpiece is placed in heating installation, is heated to 880-890 ℃, insulation 1-2 hour; With the quenching medium of 70-80 ℃, quenched, 500-510 ℃ of tempering; Wherein, described quenching medium is comprised of each material of following quality percentage composition: Repone K: 5-6%, and sodium-chlor 1-2%, all the other are water.
Preferably, workpiece is placed in heating installation, is heated to 885 ℃, be incubated 1.5 hours.
Preferably, with the quenching medium of 75 ℃, quenched, 505 ℃ of tempering.
Preferably, described quenching medium is comprised of each material of following quality percentage composition: Repone K: 5.5%, and sodium-chlor 1.5%, all the other are water.
Second purpose of the present invention is to provide a kind of quenching medium, and described quenching medium is comprised of each material of following quality percentage composition: Repone K: 5-6%, and sodium-chlor 1-2%, all the other are water.
Preferably, described quenching medium is comprised of each material of following quality percentage composition: Repone K: 5.5%, and sodium-chlor 1.5%, all the other are water.
The 3rd purpose of the present invention is to provide the application of above-mentioned quenching medium in the 45# steel workpiece quenches.
Apply the situation that 45# steel that method of the present invention obtains not there will be hardening break.
Embodiment
Following embodiment is convenient to understand better the present invention, but does not limit the present invention.
embodiment 1
The quenching method step of a kind of 45# steel workpiece of the present invention is as follows: workpiece is placed in heating installation, is heated to 885 ℃, be incubated 1.5 hours; With the quenching medium of 75 ℃, quenched, 505 ℃ of tempering.
Wherein, the formula of quenching medium is: Repone K: 5.5kg, sodium-chlor 1.5kg, water 93kg.
The preparation method of quenching medium is: the Repone K of formula ratio, sodium-chlor are added in the water of formula ratio, stir.
embodiment 2
The quenching method step of a kind of 45# steel workpiece of the present invention is as follows: workpiece is placed in heating installation, is heated to 880 ℃, be incubated 1 hour; With the quenching medium of 73 ℃, quenched, 510 ℃ of tempering.
Wherein, the formula of quenching medium is: Repone K: 5.5kg, sodium-chlor 1.5kg, water 93kg.
The preparation method of quenching medium is: the Repone K of formula ratio, sodium-chlor are added in the water of formula ratio, stir.
embodiment 3
The quenching method step of a kind of 45# steel workpiece of the present invention is as follows: workpiece is placed in heating installation, is heated to 890 ℃, be incubated 2 hours; With the quenching medium of 70 ℃, quenched, 510 ℃ of tempering.
Wherein, the formula of quenching medium is: Repone K: 6kg, sodium-chlor 2kg, water 92kg.
The preparation method of quenching medium is: the Repone K of formula ratio, sodium-chlor are added in the water of formula ratio, stir.
embodiment 4
The quenching method step of a kind of 45# steel workpiece of the present invention is as follows: workpiece is placed in heating installation, is heated to 888 ℃, be incubated 1 hour; With the quenching medium of 78 ℃, quenched, 510 ℃ of tempering.
Wherein, the formula of quenching medium is: Repone K: 5kg, sodium-chlor 2kg, water 93kg.
The preparation method of quenching medium is: the Repone K of formula ratio, sodium-chlor are added in the water of formula ratio, stir.
embodiment 5
The quenching method step of a kind of 45# steel workpiece of the present invention is as follows: workpiece is placed in heating installation, is heated to 883 ℃, be incubated 1.5 hours; With the quenching medium of 80 ℃, quenched, 500 ℃ of tempering.
Wherein, the formula of quenching medium is: Repone K: 5kg, sodium-chlor 2kg, water 93kg.
The preparation method of quenching medium is: the Repone K of formula ratio, sodium-chlor are added in the water of formula ratio, stir.
embodiment 6
The quenching method step of a kind of 45# steel workpiece of the present invention is as follows: workpiece is placed in heating installation, is heated to 880 ℃, be incubated 1 hour; With the quenching medium of 76 ℃, quenched, 510 ℃ of tempering.
Wherein, the formula of quenching medium is: Repone K: 5kg, sodium-chlor 1.5kg, water 93.5kg.
The preparation method of quenching medium is: the Repone K of formula ratio, sodium-chlor are added in the water of formula ratio, stir.
embodiment 7
The quenching method step of a kind of 45# steel workpiece of the present invention is as follows: workpiece is placed in heating installation, is heated to 890 ℃, be incubated 2 hours; With the quenching medium of 74 ℃, quenched, 510 ℃ of tempering.
Wherein, the formula of quenching medium is: Repone K: 6kg, sodium-chlor 1.5kg, water 92.5kg.
The preparation method of quenching medium is: the Repone K of formula ratio, sodium-chlor are added in the water of formula ratio, stir.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment, the present invention is had been described in detail, for a person skilled in the art, its technical scheme that still can put down in writing aforementioned each embodiment is modified, or part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. the quenching method of a 45# steel workpiece, step is as follows: workpiece is placed in heating installation, is heated to 880-890 ℃, insulation 1-2 hour; With the quenching medium of 70-80 ℃, quenched, 500-510 ℃ of tempering; Wherein, described quenching medium is comprised of each material of following quality percentage composition: Repone K: 5-6%, and sodium-chlor 1-2%, all the other are water.
2. quenching method according to claim 1, is characterized in that: workpiece is placed in heating installation, is heated to 885 ℃, be incubated 1.5 hours.
3. quenching method according to claim 1 is characterized in that: with the quenching medium of 75 ℃, quenched, and 505 ℃ of tempering.
4. quenching method according to claim 1, it is characterized in that: described quenching medium is comprised of each material of following quality percentage composition: Repone K: 5.5%, sodium-chlor 1.5%, all the other are water.
5. a quenching medium, it is characterized in that: described quenching medium is comprised of each material of following quality percentage composition: Repone K: 5-6%, sodium-chlor 1-2%, all the other are water.
6. quenching medium according to claim 5, it is characterized in that: described quenching medium is comprised of each material of following quality percentage composition: Repone K: 5.5%, sodium-chlor 1.5%, all the other are water.
7. the application of the described quenching medium of claim 5 or 6 in the 45# steel workpiece quenches.
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| CN201310443032.4A CN103498026B (en) | 2013-09-26 | 2013-09-26 | A kind of quenching method of 45# steel workpiece |
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| CN201310443032.4A CN103498026B (en) | 2013-09-26 | 2013-09-26 | A kind of quenching method of 45# steel workpiece |
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| CN103498026A true CN103498026A (en) | 2014-01-08 |
| CN103498026B CN103498026B (en) | 2015-09-09 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065427A (en) * | 2016-08-02 | 2016-11-02 | 中车资阳机车有限公司 | A kind of hardening and tempering process of railway locomotive derailing support shaft |
| CN106399644A (en) * | 2016-12-08 | 2017-02-15 | 大连圣洁热处理科技发展有限公司 | Quenching technology for preventing quenching cracks of No.45 steel workpiece |
| CN106498134A (en) * | 2016-12-08 | 2017-03-15 | 大连圣洁热处理科技发展有限公司 | A kind of quenching medium and quenching technical for preventing No. 45 steel workpiece hardening cracks |
| CN107955862A (en) * | 2017-12-27 | 2018-04-24 | 洛阳神佳窑业有限公司 | A kind of process for quenching of 45# steel workpiece |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101186963A (en) * | 2007-12-17 | 2008-05-28 | 国网北京电力建设研究院 | Heat treatment technique of high strength anchor bolt for extra-high voltage transmission line rod tower |
| CN101654723A (en) * | 2008-08-21 | 2010-02-24 | 临沂业隆通用机械有限公司 | Method for eliminating cracks on surface of bearing axle by induction heating |
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2013
- 2013-09-26 CN CN201310443032.4A patent/CN103498026B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101186963A (en) * | 2007-12-17 | 2008-05-28 | 国网北京电力建设研究院 | Heat treatment technique of high strength anchor bolt for extra-high voltage transmission line rod tower |
| CN101654723A (en) * | 2008-08-21 | 2010-02-24 | 临沂业隆通用机械有限公司 | Method for eliminating cracks on surface of bearing axle by induction heating |
Non-Patent Citations (1)
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| 王荣: "45钢制零件淬火开裂分析", 《理化检验-物理分册》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065427A (en) * | 2016-08-02 | 2016-11-02 | 中车资阳机车有限公司 | A kind of hardening and tempering process of railway locomotive derailing support shaft |
| CN106399644A (en) * | 2016-12-08 | 2017-02-15 | 大连圣洁热处理科技发展有限公司 | Quenching technology for preventing quenching cracks of No.45 steel workpiece |
| CN106498134A (en) * | 2016-12-08 | 2017-03-15 | 大连圣洁热处理科技发展有限公司 | A kind of quenching medium and quenching technical for preventing No. 45 steel workpiece hardening cracks |
| CN106399644B (en) * | 2016-12-08 | 2019-01-08 | 大连圣洁热处理科技发展有限公司 | A kind of quenching technical preventing No. 45 steel workpiece hardening cracks |
| CN107955862A (en) * | 2017-12-27 | 2018-04-24 | 洛阳神佳窑业有限公司 | A kind of process for quenching of 45# steel workpiece |
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| CN103498026B (en) | 2015-09-09 |
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Inventor after: Yang Xu Inventor before: Yang Longxing |
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Effective date of registration: 20170602 Address after: 519000 Guangdong city of Zhuhai Province Nanping Zhen Guang Sheng Lu, No. 24 building B Patentee after: Zhuhai Zhi Zhi Machinery Manufacturing Co.,Ltd. Address before: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20170602 Address after: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 214000 Jiangsu city in Wuxi Province Economic Development Zone Huishan Spring Road No. 588 Patentee before: WUXI YANGGONG MACHINERY MANUFACTURING Co.,Ltd. |
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