CN104152662A - Transmission shaft heat treatment technology - Google Patents
Transmission shaft heat treatment technology Download PDFInfo
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- CN104152662A CN104152662A CN201410420151.2A CN201410420151A CN104152662A CN 104152662 A CN104152662 A CN 104152662A CN 201410420151 A CN201410420151 A CN 201410420151A CN 104152662 A CN104152662 A CN 104152662A
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Abstract
The invention discloses a transmission shaft heat treatment technology. The technology comprises the following processes that (1) primary thermal refining is carried out on a transmission shaft in a heating furnace, and the hardness of the transmission shaft is made to reach HRC 25 to 40; (2) the transmission shaft is preheated for two hours to three hours, and the temperature of a preheating furnace is 440 DEG C to 460 DEG C; (3) heat preservation is carried out on the transmission shaft for five hours to six hours in a salt bath furnace of the temperature of 600 DEG C to 620 DEG C, then, the transmission shaft is quenched, according to quenching, nitrate quenching agents are adopted to quench the transmission shaft to 500 DEG C to 510 DEG C at the constant speed at the rate of 50 DEG C/minute to 55 DEG C/minute, and the nitrate quenching agents are quenching agents formed by mixing potassium nitrate and sodium nitrate according to the mass ratio of 2 to 1; (4) after the transmission shaft is quenched, tempering is carried out at the temperature of 180 DEG C to 200 DEG C, then heat preservation is carried out for 20 minutes to 30 minutes, and therefore the tissue is stabilized; (5) heat preservation is carried out on the transmission shaft for eight hours to ten hours in a tempering furnace of 300 DEG C to 305 DEG C, and then the transmission shaft is cooled to the normal temperature in an air mode.
Description
Technical field
The present invention relates to mechanical transmission fields, specifically, specially refer to a kind of transmission shaft thermal treatment process.
Background technology
Transmission shaft is drive disk assembly conventional in industrial equipments field, be widely used in various device, according to the difference of application scenario, bearing should have the characteristics such as long lifetime, high precision, high rigidity, low noise, high-wearing feature, at construction machinery industry, as mechanical means such as fork truck and excavators, also require to withstand shocks load.
summary of the invention
The object of the invention is to for deficiency of the prior art, provide a kind of emery wheel proofing unit, to address the above problem.
Technical problem solved by the invention can realize by the following technical solutions:
Transmission shaft thermal treatment process, comprises following technique:
1) by transmission shaft first modifier treatment in process furnace, make transmission shaft hardness reach HRC25-40;
2) by transmission shaft preheating 2-3 hour, preheating oven furnace temperature 440-460 ℃;
3) in the salt bath furnace of 600-620 ℃, being incubated 5-6 hour again quenches; Described quenching adopts nitrate quenching agent to be at the uniform velocity quenched to 500-510 ℃ with 50-55 ℃/min, and described nitrate quenching agent is the quenching medium that saltpetre and SODIUMNITRATE are mixed by the mass ratio of 2:1;
4) after transmission shaft quenches, in temperature, be tempering under the condition of 180-200 ℃, be then incubated 20-30 minute, with stabilizing tissue;
5) in the tempering stove of 300-305 ℃, be incubated 8-10 hour again after air cooling to normal temperature.
Further, the optimum temps of described quenching is 500 ℃, and the optimum temps of tempering is 180 ℃.
Further, the optimum temps of described step 5) is 300 ℃, and best soaking time is 10 hours.
Compared with prior art, beneficial effect of the present invention is as follows:
Of the present inventionly adopted special thermal treatment process, made transmission shaft surface have high rigidity, to guarantee wear resistance and radial and axial supporting capacity, and heart portion and external diameter are softs, have both guaranteed toughness, can prevent again outside surface injury friction track.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
Transmission shaft thermal treatment process of the present invention, comprises following technique:
1) by transmission shaft first modifier treatment in process furnace, make transmission shaft hardness reach HRC25-40;
2) by transmission shaft preheating 2-3 hour, preheating oven furnace temperature 440-460 ℃;
3) in the salt bath furnace of 600-620 ℃, being incubated 5-6 hour again quenches; Described quenching adopts nitrate quenching agent to be at the uniform velocity quenched to 500 ℃ with 50-55 ℃/min, and described nitrate quenching agent is the quenching medium that saltpetre and SODIUMNITRATE are mixed by the mass ratio of 2:1;
4) after transmission shaft quenches, in temperature, be tempering under the condition of 180 ℃, be then incubated 20-30 minute, with stabilizing tissue;
5) in the tempering stove of 300 ℃, be incubated 10 hours again after air cooling to normal temperature.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. transmission shaft thermal treatment process, is characterized in that, comprises following technique:
1) by transmission shaft first modifier treatment in process furnace, make transmission shaft hardness reach HRC25-40;
2) by transmission shaft preheating 2-3 hour, preheating oven furnace temperature 440-460 ℃;
3) in the salt bath furnace of 600-620 ℃, being incubated 5-6 hour again quenches; Described quenching adopts nitrate quenching agent to be at the uniform velocity quenched to 500-510 ℃ with 50-55 ℃/min, and described nitrate quenching agent is the quenching medium that saltpetre and SODIUMNITRATE are mixed by the mass ratio of 2:1;
4) after transmission shaft quenches, in temperature, be tempering under the condition of 180-200 ℃, be then incubated 20-30 minute, with stabilizing tissue;
5) in the tempering stove of 300-305 ℃, be incubated 8-10 hour again after air cooling to normal temperature.
2. transmission shaft thermal treatment process according to claim 1, is characterized in that, the optimum temps of described quenching is 500 ℃, and the optimum temps of tempering is 180 ℃.
3. transmission shaft thermal treatment process according to claim 1, is characterized in that, the optimum temps of described step 5) is 300 ℃, and best soaking time is 10 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410420151.2A CN104152662A (en) | 2014-08-25 | 2014-08-25 | Transmission shaft heat treatment technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410420151.2A CN104152662A (en) | 2014-08-25 | 2014-08-25 | Transmission shaft heat treatment technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104152662A true CN104152662A (en) | 2014-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410420151.2A Pending CN104152662A (en) | 2014-08-25 | 2014-08-25 | Transmission shaft heat treatment technology |
Country Status (1)
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| CN (1) | CN104152662A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838867A (en) * | 2016-03-29 | 2016-08-10 | 苏州恩欧西智能科技有限公司 | Heat treatment process for transmission shaft of laser marking device |
| CN105925779A (en) * | 2016-06-16 | 2016-09-07 | 安庆市吉安汽车零件锻轧有限公司 | Electromagnetic heat treatment technique for shaft part |
| CN105950851A (en) * | 2016-06-16 | 2016-09-21 | 安庆市吉安汽车零件锻轧有限公司 | Shaft heat treatment technology |
| CN107723447A (en) * | 2017-10-12 | 2018-02-23 | 徐州东鹏工具制造有限公司 | A kind of stainless steel blade Technology for Heating Processing |
| CN112375894A (en) * | 2020-10-24 | 2021-02-19 | 安徽省含山县皖中减速机械有限公司 | Heat treatment process for improving torque of output shaft of speed reducer |
-
2014
- 2014-08-25 CN CN201410420151.2A patent/CN104152662A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838867A (en) * | 2016-03-29 | 2016-08-10 | 苏州恩欧西智能科技有限公司 | Heat treatment process for transmission shaft of laser marking device |
| CN105925779A (en) * | 2016-06-16 | 2016-09-07 | 安庆市吉安汽车零件锻轧有限公司 | Electromagnetic heat treatment technique for shaft part |
| CN105950851A (en) * | 2016-06-16 | 2016-09-21 | 安庆市吉安汽车零件锻轧有限公司 | Shaft heat treatment technology |
| CN107723447A (en) * | 2017-10-12 | 2018-02-23 | 徐州东鹏工具制造有限公司 | A kind of stainless steel blade Technology for Heating Processing |
| CN112375894A (en) * | 2020-10-24 | 2021-02-19 | 安徽省含山县皖中减速机械有限公司 | Heat treatment process for improving torque of output shaft of speed reducer |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141119 |