CN109371206A - A kind of pivot pin heat treatment process - Google Patents
A kind of pivot pin heat treatment process Download PDFInfo
- Publication number
- CN109371206A CN109371206A CN201811579432.7A CN201811579432A CN109371206A CN 109371206 A CN109371206 A CN 109371206A CN 201811579432 A CN201811579432 A CN 201811579432A CN 109371206 A CN109371206 A CN 109371206A
- Authority
- CN
- China
- Prior art keywords
- heat treatment
- pin shaft
- tempering
- treatment process
- pivot pin
- 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
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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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
-
- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
Abstract
The invention discloses a kind of pivot pin heat treatment process, and for the heat treatment of the pin shaft blank after round steel blanking, the material of the pin shaft blank is 40Cr, and the heat treatment includes the modifier treatment and tempering that sequence carries out；The holding stage carried out during the modifier treatment including sequence and oil cold stage, between 700-900 DEG C, soaking time is controlled in 3-5h the temperature of the holding stage；Heating temperature during the tempering is between 300-350 DEG C.The present invention passes through the above heat treatment process; compared to the prior art; when 40Cr material is as pin shaft purposes; compared to the pin shaft of conventionally employed same material; although the performances decrease to some degree such as wearability and intensity, under low temperature use environment, the shock loading under cryogenic conditions is the main reason for pin shaft destroys; therefore the pin shaft by being heat-treated above, service life would generally reach four times of the prior art or more.
Description
Technical field
The present invention relates to technical field of metal heat treatment, more specifically, it relates to a kind of pivot pin heat treatment process.
Background technique
Pivot pin also known as pin shaft are a kind of standardized fasteners, general to be locked by split pin, both can the static company of fixation
It connects, can also do relative motion with connected piece, be mainly used for the hinged place of two parts, structure is in the hinge connection.Pin shaft reliable operation,
Convenient disassembly is widely used as the mechanical fastener of construction applications.
In the prior art, pin shaft is used for different working environments, for specific requirement, generally requires selection and closes
The raw material that suitable material makes as pin shaft, however raw material are carried out with the heat treatment of different process, it also can be to pin shaft product
Service performance generate large effect.
It is poor for the pin shaft durability under cold environment in the prior art, it is typically implemented in low-temperature impact property,
Pin shaft heat treatment process under cold environment is made further research, to optimize the service life of the use condition lower bearing pin, is
Urgent problem to be solved in the prior art.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art described above, a kind of pivot pin heat treatment process, the heat are provided
Treatment process extends pivot pin product service life.
In order to solve the above technical problems, the object of the present invention is achieved like this: a kind of pivot pin heat according to the present invention
Treatment process, for the heat treatment of the pin shaft blank after round steel blanking, the material of the pin shaft blank is 40Cr, the heat treatment
The modifier treatment and tempering carried out including sequence；
The holding stage carried out during the modifier treatment including sequence and oil cold stage, the temperature of the holding stage
Between 700-900 DEG C, soaking time is controlled in 3-5h degree；
Heating temperature during the tempering is between 300-350 DEG C.
The present invention is further arranged to, and the oil cold stage uses 30# machinery oil.
The present invention is further arranged to, and the soaking time of the modifier treatment is 4h.
The present invention is further arranged to, and the soaking time of the tempering process is no less than 3h, is cooled down after coming out of the stove.
The present invention is further arranged to, and the number of the tempering process is greater than primary.
In conclusion the invention has the following advantages: pivot pin heat treatment process according to the present invention, by above
Heat treatment process, compared to the prior art, when 40Cr material is as pin shaft purposes, compared to the pin of conventionally employed same material
Axis, although the performances decrease to some degree such as wearability and intensity, the impact under low temperature use environment, under cryogenic conditions
Load is the main reason for pin shaft destroys, therefore the pin shaft by being heat-treated above, and service life would generally reach existing skill
Four times or more of art.
Specific embodiment
Below with reference to preferred embodiment, the present invention is further described.
Embodiment 1
A kind of pivot pin heat treatment process, the specific steps are as follows:
For the heat treatment of the pin shaft blank after round steel blanking, the material of the pin shaft blank is 40Cr, the heat treatment
The modifier treatment and tempering carried out including sequence；During the modifier treatment, including sequence carry out holding stage and
In the oil cold stage, between 700-900 DEG C, soaking time is controlled in 3-5h the temperature of the holding stage；The tempering process
In heating temperature between 300-350 DEG C.
Wherein, the oil cold stage uses 30# machinery oil.
Wherein, the soaking time of the tempering process is no less than 3h, is cooled down after coming out of the stove.
Wherein, the number of the tempering process is greater than primary.
Embodiment 2
A kind of pivot pin heat treatment process, the specific steps are as follows:
For the heat treatment of the pin shaft blank after round steel blanking, the material of the pin shaft blank is 40Cr, the heat treatment
The modifier treatment and tempering carried out including sequence；During the modifier treatment, including sequence carry out holding stage and
In the oil cold stage, between 700-900 DEG C, soaking time is controlled in 4h the temperature of the holding stage；During the tempering
Heating temperature between 300-350 DEG C.
Wherein, the oil cold stage uses 30# machinery oil.
Wherein, the soaking time of the tempering process is 4h, is cooled down after coming out of the stove.
Wherein, the number of the tempering process is twice.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (5)
1. a kind of pivot pin heat treatment process, the heat treatment for the pin shaft blank after round steel blanking, which is characterized in that the pin shaft
The material of blank is 40Cr, and the heat treatment includes the modifier treatment and tempering that sequence carries out；
The holding stage carried out during the modifier treatment including sequence and oil cold stage, the temperature of the holding stage are situated between
In 700-900 DEG C, soaking time is controlled in 3-5h；
Heating temperature during the tempering is between 300-350 DEG C.
2. pivot pin heat treatment process according to claim 1, which is characterized in that the oil cold stage uses 30# machinery oil.
3. pivot pin heat treatment process according to claim 1, which is characterized in that the soaking time of the modifier treatment is
4h。
4. pivot pin heat treatment process according to claim 1, which is characterized in that the soaking time of the tempering process
No less than 3h is cooled down after coming out of the stove.
5. pivot pin heat treatment process according to claim 1, which is characterized in that the number of the tempering process is greater than
Once.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811579432.7A CN109371206A (en) | 2018-12-24 | 2018-12-24 | A kind of pivot pin heat treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811579432.7A CN109371206A (en) | 2018-12-24 | 2018-12-24 | A kind of pivot pin heat treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109371206A true CN109371206A (en) | 2019-02-22 |
Family
ID=65371500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811579432.7A Pending CN109371206A (en) | 2018-12-24 | 2018-12-24 | A kind of pivot pin heat treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109371206A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195147A (en) * | 2019-06-02 | 2019-09-03 | 潘立英 | The preparation method of large medical equipment pin shaft |
| CN110205463A (en) * | 2019-06-02 | 2019-09-06 | 潘立英 | A kind for the treatment of process of pin shaft |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714304A (en) * | 2014-12-03 | 2016-06-29 | 重庆远煌机械制造有限公司 | 40Cr pin shaft heat treatment process |
| CN105886738A (en) * | 2016-05-03 | 2016-08-24 | 成都亨通兆业精密机械有限公司 | Heat treatment technology for hinge pin |
| CN107541587A (en) * | 2017-10-24 | 2018-01-05 | 徐州市华圆机械厂 | A kind of bearing pin Technology for Heating Processing |
| CN108148991A (en) * | 2016-12-06 | 2018-06-12 | 新昌县嘉德科技发展有限公司 | A kind of processing technology of axis pin |
-
2018
- 2018-12-24 CN CN201811579432.7A patent/CN109371206A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714304A (en) * | 2014-12-03 | 2016-06-29 | 重庆远煌机械制造有限公司 | 40Cr pin shaft heat treatment process |
| CN105886738A (en) * | 2016-05-03 | 2016-08-24 | 成都亨通兆业精密机械有限公司 | Heat treatment technology for hinge pin |
| CN108148991A (en) * | 2016-12-06 | 2018-06-12 | 新昌县嘉德科技发展有限公司 | A kind of processing technology of axis pin |
| CN107541587A (en) * | 2017-10-24 | 2018-01-05 | 徐州市华圆机械厂 | A kind of bearing pin Technology for Heating Processing |
Non-Patent Citations (1)
| Title |
|---|
| 王洪明: "《结构钢手册》", 31 August 1985, 河北科学技术出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195147A (en) * | 2019-06-02 | 2019-09-03 | 潘立英 | The preparation method of large medical equipment pin shaft |
| CN110205463A (en) * | 2019-06-02 | 2019-09-06 | 潘立英 | A kind for the treatment of process of pin shaft |
| CN110195147B (en) * | 2019-06-02 | 2021-07-09 | 丁亮 | Preparation method of pin shaft for large medical equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190222 |
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| RJ01 | Rejection of invention patent application after publication |