CN103305677A - Thermal treatment technology of 45 steel thin-wall sleeve - Google Patents
Thermal treatment technology of 45 steel thin-wall sleeve Download PDFInfo
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- CN103305677A CN103305677A CN 201310204794 CN201310204794A CN103305677A CN 103305677 A CN103305677 A CN 103305677A CN 201310204794 CN201310204794 CN 201310204794 CN 201310204794 A CN201310204794 A CN 201310204794A CN 103305677 A CN103305677 A CN 103305677A
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Abstract
The invention discloses a thermal treatment technology of a 45 steel thin-wall sleeve, which comprises normalizing treatment, quenching and tempering processes and is characterized in that the normalizing treatment comprises the following steps of: preheating a workpiece to 300 DEG C, and soaking in a borax aqueous solution preheated to 100 DEG C and having a borax content of 10-20%; when the temperature of the workpiece is consistent with that of the solution and is not lower than 80 DEG C, taking out the workpiece uniformly coated with a layer of borax on the surface, and then performing quenching and tempering treatment, wherein the quenching heating temperature is 820-840 DEG C and the heat is preserved for 0.5 hour, and the tempering heating temperature is 260-280 DEG C and the heat is preserved for 1.5 hours; and cooling along with the furnace. The operation is simple, the quality is reliable, the workpiece deformation and cracking can be effectively prevented, and the qualified rate of workpieces exceeds 95%.
Description
Technical field
The present invention relates to the heat treating method in a kind of mechanical workout, particularly a kind of 45 steel thin-wall cover thermal treatment process.
Background technology
In the prior art, in the thermal treatment process to 45 steel thin-wall external members, 840 ℃～860 ℃ of blank normalizing treatment temperature, insulation 1 hour, 820 ℃～840 ℃ of quenching temperatures, insulation 0.5 hour, quenchant are water, 260 ℃～280 ℃ of tempering Heating temperatures, insulation 1.5 hours.Endoporus swells behind the workpiece quenching, distortion, cracking phenomena easily occur, and qualification rate only is about 46%.
Summary of the invention
The objective of the invention is in order to overcome above-mentioned weak point, and a kind of workpiece deformation, cracking, 45 steel thin-wall cover thermal treatment process that qualification rate is high of preventing is provided.
For achieving the above object, the technical solution used in the present invention is: a kind of 45 steel thin-wall cover thermal treatment process, comprise normalizing treatment, quench, tempering process, it is characterized in that in the normalizing treatment, when first workpiece being preheated to 300 ℃, immerse again and be heated in advance 100 ℃, in the borax solution of borax content 10%～20%, the temperature for the treatment of workpiece and solution is consistent, and when being not less than 80 ℃, the workpiece of coated with uniform one deck borax is taken out, and then quench, temper, 820 ℃～840 ℃ of quenching temperatures, be incubated 0.5 hour, 260 ℃～280 ℃ of tempering Heating temperatures, be incubated 1.5 hours, furnace cooling.
The present invention is owing to adopting above process modification, and simple to operate, reliable in quality can effectively prevent workpiece deformation, cracking, and the workpiece qualification rate reaches more than 95%.
Embodiment
A kind of 45 steel thin-wall cover thermal treatment process, comprise normalizing treatment, quenching, tempering process, wherein in the normalizing treatment, when first workpiece being preheated to 300 ℃, immerse again and be heated in advance in 100 ℃, the borax solution of borax content 10%～20%, when treating that the temperature of workpiece and solution is consistent and being not less than 80 ℃, the workpiece of coated with uniform one deck borax is taken out, and then quench, temper, 820 ℃～840 ℃ of quenching temperatures, insulation 0.5 hour, 260 ℃～280 ℃ of tempering Heating temperatures, insulation 1.5 hours, furnace cooling.
Claims (1)
1. a steel thin-wall is overlapped thermal treatment process, comprise normalizing treatment, quenching, tempering process, it is characterized in that in the normalizing treatment, when first workpiece being preheated to 300 ℃, immerse again and be heated in advance in 100 ℃, the borax solution of borax content 10%～20%, when treating that the temperature of workpiece and solution is consistent and being not less than 80 ℃, the workpiece of coated with uniform one deck borax is taken out, and then quench, temper, 820 ℃～840 ℃ of quenching temperatures, insulation 0.5 hour, 260 ℃～280 ℃ of tempering Heating temperatures, insulation 1.5 hours, furnace cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310204794 CN103305677A (en) | 2013-05-29 | 2013-05-29 | Thermal treatment technology of 45 steel thin-wall sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310204794 CN103305677A (en) | 2013-05-29 | 2013-05-29 | Thermal treatment technology of 45 steel thin-wall sleeve |
Publications (1)
| Publication Number | Publication Date |
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| CN103305677A true CN103305677A (en) | 2013-09-18 |
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Family Applications (1)
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| CN 201310204794 Pending CN103305677A (en) | 2013-05-29 | 2013-05-29 | Thermal treatment technology of 45 steel thin-wall sleeve |
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| CN (1) | CN103305677A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106244782A (en) * | 2016-09-30 | 2016-12-21 | 西安长峰机电研究所 | A kind of heat treatment method of 45 steel dangerous dimension parts |
| CN111440937A (en) * | 2020-05-26 | 2020-07-24 | 重庆长融机械有限责任公司 | Heat treatment method and clamp for check ring for automobile steering gear |
| CN112176339A (en) * | 2019-07-05 | 2021-01-05 | 天津欧亚西斯金属制品有限公司 | Preparation method of special coating for automobile outer covering part mold |
-
2013
- 2013-05-29 CN CN 201310204794 patent/CN103305677A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106244782A (en) * | 2016-09-30 | 2016-12-21 | 西安长峰机电研究所 | A kind of heat treatment method of 45 steel dangerous dimension parts |
| CN106244782B (en) * | 2016-09-30 | 2018-12-11 | 西安长峰机电研究所 | A kind of heat treatment method of 45 steel dangerous dimension part |
| CN112176339A (en) * | 2019-07-05 | 2021-01-05 | 天津欧亚西斯金属制品有限公司 | Preparation method of special coating for automobile outer covering part mold |
| CN111440937A (en) * | 2020-05-26 | 2020-07-24 | 重庆长融机械有限责任公司 | Heat treatment method and clamp for check ring for automobile steering gear |
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Application publication date: 20130918 |