CN107779559A - A kind of steel ball quenching technique - Google Patents
A kind of steel ball quenching technique Download PDFInfo
- Publication number
- CN107779559A CN107779559A CN201610736012.XA CN201610736012A CN107779559A CN 107779559 A CN107779559 A CN 107779559A CN 201610736012 A CN201610736012 A CN 201610736012A CN 107779559 A CN107779559 A CN 107779559A
- Authority
- CN
- China
- Prior art keywords
- steel ball
- stove
- cooled
- temperature
- 120min
- 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
-
- 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
- C21D9/36—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for balls; for rollers
Abstract
The invention discloses a kind of steel ball quenching technique, it is characterized in that, Quench heating in steel ball quenching stove, 750 780 DEG C of hardening heat is simultaneously incubated 60 80min, it is cooled to 680 700 DEG C and is come out of the stove air cooling after being incubated 80 120min, steel ball carries out being cooled to normal temperature after being once tempered, place into the cold treatment equipment that temperature is 40 to 30 DEG C and cool down 150 180min progress cold treatments, double tempering is carried out after cold treatment again, the temperature of double tempering is 750 780 DEG C, is come out of the stove after 80 120min of insulation and is air-cooled to room temperature.Relative to existing method, Oxygen potential, hardness and strength character that steel ball is compared all are significantly increased the steel ball quenching technique of the present invention, meet higher quality requirement of the rolling element industry to steel ball, while in turn ensure that the quality of product.
Description
Technical field
The invention discloses a kind of quenching technical, more particularly to a kind of steel ball quenching technique.
Background technology
At present, each industry of domestic and international family has been obtained along with the aggravation of internationalization technology competition, efficient and long life steel ball
Favor.By the cooperation with the top bearing industry in the world, exchange and technical research results show, existing customer is in the long-life
The focus of small size bearing steel ball is mainly in terms of high speed, high trap and without abnormal sound.The steel that existing steel ball processing mode manufactures
The surface quality of ball is poor, does not reach bearing steel ball qualified hardness and intensity even.
The content of the invention
The purpose of the present invention is exactly to overcome prior art defect, there is provided a kind of steel ball quenching technique.
The technical solution adopted for the present invention to solve the technical problems is：A kind of steel ball quenching technique, it is characterized in that：Steel ball
Quench heating in glowing furnace, 750-780 DEG C of hardening heat are simultaneously incubated 60-80min, are cooled to 680-700 DEG C and are incubated 80-
Come out of the stove after 120min air cooling, steel ball carries out being cooled to normal temperature after being once tempered, and it is -40 to -30 DEG C cold to place into temperature
150-180min is cooled down in processing equipment and carries out cold treatment, carries out double tempering after cold treatment again, the temperature of double tempering is
750-780 DEG C, come out of the stove after being incubated 80-120min and be air-cooled to room temperature.
The beneficial effects of the invention are as follows：The steel ball quenching technique of the present invention is relative to existing method, ball that steel ball is compared
Rate, hardness and strength character are all significantly increased, and meet higher quality requirement of the rolling element industry to steel ball, while again
It ensure that the quality of product.
Embodiment
The present invention is described in further detail with reference to specific embodiment.
Specific embodiment：A kind of steel ball quenching technique, it is characterized in that：Quench heating in steel ball quenching stove, hardening heat
750-780 DEG C and 60-80min is incubated, is cooled to 680-700 DEG C and is incubated after 80-120min air cooling of coming out of the stove, steel ball carries out one
Normal temperature is cooled to after secondary tempering, places into the cold treatment equipment that temperature is -40 to -30 DEG C and cools down 150-180min progress
Cold treatment, double tempering is carried out after cold treatment again, the temperature of double tempering is 750-780 DEG C, sky of being come out of the stove after insulation 80-120min
It is cooled to room temperature.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (1)
1. a kind of steel ball quenching technique, it is characterized in that：Quench heating in steel ball quenching stove, 750-780 DEG C of hardening heat are simultaneously incubated
60-80min, it is cooled to 680-700 DEG C and is incubated after 80-120min air cooling of coming out of the stove, steel ball carries out after being once tempered that its is cold
But to normal temperature, place into the cold treatment equipment that temperature is -40 to -30 DEG C and cool down 150-180min progress cold treatments, cold treatment
Carry out double tempering again afterwards, the temperature of double tempering is 750-780 DEG C, is come out of the stove after insulation 80-120min and is air-cooled to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736012.XA CN107779559A (en) | 2016-08-26 | 2016-08-26 | A kind of steel ball quenching technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736012.XA CN107779559A (en) | 2016-08-26 | 2016-08-26 | A kind of steel ball quenching technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107779559A true CN107779559A (en) | 2018-03-09 |
Family
ID=61439582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610736012.XA Pending CN107779559A (en) | 2016-08-26 | 2016-08-26 | A kind of steel ball quenching technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107779559A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814644A (en) * | 2019-10-15 | 2020-02-21 | 常熟市宝丰精工钢球有限公司 | High-strength austenitic steel ball |
-
2016
- 2016-08-26 CN CN201610736012.XA patent/CN107779559A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814644A (en) * | 2019-10-15 | 2020-02-21 | 常熟市宝丰精工钢球有限公司 | High-strength austenitic steel ball |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180309 |