CN109439880A - A kind of high-accuracy bearing parts heat treatment process - Google Patents
A kind of high-accuracy bearing parts heat treatment process Download PDFInfo
- Publication number
- CN109439880A CN109439880A CN201811511829.2A CN201811511829A CN109439880A CN 109439880 A CN109439880 A CN 109439880A CN 201811511829 A CN201811511829 A CN 201811511829A CN 109439880 A CN109439880 A CN 109439880A
- Authority
- CN
- China
- Prior art keywords
- quenching
- bearing parts
- heat treatment
- treatment process
- minutes
- 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
Links
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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/63—Quenching devices for bath quenching
-
- 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
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention relates to bearing parts technical field of heat treatment, and disclose a kind of high-accuracy bearing parts heat treatment process, including quenching-cold treatment-tempering, the quenching is carried out in quenching apparatus with certain quenching loading frequency, the temperature of the quenching is 845 ± 5 DEG C, soaking time is 35~40 minutes, then 10 minutes cooling under the action of cooling medium；The cold treatment carries out in cold treatment equipment, and the temperature when cold treatment is -70 ± 5 DEG C, and soaking time is 60~90 minutes；The tempering temperature is 155 ± 5 DEG C, and soaking time is 150~180 minutes.The high-accuracy bearing parts heat treatment process, has that heat-treatment distortion is small, the high advantage of size qualification rate.
Description
Technical field
The present invention relates to bearing parts technical field of heat treatment, specially a kind of high-accuracy bearing parts heat treatment process.
Background technique
Metal heat treatmet is to be placed on metal works in certain medium to be heated to suitable temperature, and protect in this temperature
After holding a period of time, and cooling in different media with friction speed, by changing the micro- of metal material surface or inside
Institutional framework controls a kind of technique of its performance.Metal heat treatmet is one of the significant process in machine-building, with other plus
Work technique is heat-treated the shape and whole chemical component for not changing workpiece generally, but passes through change inside workpiece to compare
Microscopic structure, or change the chemical component of workpiece surface, the service performance of workpiece is assigned or improves, its main feature is that improving workpiece
Inherent quality, and this be generally not naked eyes can see, so, it is special process process and matter in machine-building
The important link of buret reason.
The Main Patterns of bearing failure are fatigue and wear, and raw material quality, carbide network tissue, carbide strip
Tissue, decarburization etc. are the important factor in order of bearing fatigue life, thermal treatment quality to the service life of bearing have it is important very
To conclusive influence, in heat treatment, there are thermal stress and structural stress, this internal stress can be overlapped mutually bearing parts
Or partial offset, it is complicated and changeable, because it can be with heating temperature, heating speed, the type of cooling, cooling velocity, part
The variation of shapes and sizes and change, so heat-treatment distortion is technical problem common in Production of bearing greatly.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of high-accuracy bearing parts heat treatment process, has hot place
The advantages that reason deformation is small, and size qualification rate is high, solves the problems, such as that heat-treatment distortion is big in the prior art.
(2) technical solution
To realize that heat-treatment distortion is small, the high purpose of size qualification rate, the invention provides the following technical scheme: a kind of high-precision
Close bearing parts heat treatment process, including quenching-cold treatment-tempering, the quenching carry out in quenching apparatus, the quenching
Temperature is 845 ± 5 DEG C, and soaking time is 35~40 minutes, then 10 minutes cooling under the action of cooling medium；The cold place
Reason carries out in cold treatment equipment, and the temperature when cold treatment is -70 ± 5 DEG C, and soaking time is 60~90 minutes；Described time
Fiery temperature is 155 ± 5 DEG C, and soaking time is 150~180 minutes.
Further, the quenching apparatus is that RZD-90 casts net furnace.
Further, the cold treatment equipment is ZT100D cryogenic box.
Further, the cooling medium is VN303 quenching oil, the cooling side for using not open oil to stir in cooling procedure
Formula.
Further, the loading frequency of the quenching is 3~5Kg/ times.
Further, the bearing parts uses GCr15 high-carbon-chromium bearing steel, and bearing accuracy grade is the lathe master of P4
Axle bearing lasso, diameter range is in 50~200mm, and effective thickness is in 3~12mm.
(3) beneficial effect
Compared with prior art, the present invention provides a kind of high-accuracy bearing parts heat treatment process, have following beneficial
Effect:
After being heat-treated according to above-mentioned technique, the indexs such as microstructure hardness of bearing parts meet JB/T1255 mark
The heat-treatment distortion of alignment request, bearing parts reduces, and size qualification rate reaches 95% or more.Solves high-accuracy bearing ring heat
Processing deformation is big, the low problem of size qualification rate.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
A kind of high-accuracy bearing parts heat treatment process, including quenching-cold treatment-tempering, the bearing parts use
GCr15 high-carbon-chromium bearing steel, bearing accuracy grade are the machine tool mainshaft bearing lasso of P4, and diameter range is in 50~200mm, effectively
Wall thickness is carried out in quenching apparatus in 3~12mm, the quenching with certain quenching loading frequency, and quenching apparatus is RZD-90 casting
Net furnace, the loading frequency of quenching are 3~5Kg/ times, and the temperature of the quenching is 845 ± 5 DEG C, and soaking time is 35~40 minutes,
Then 10 minutes cooling under the action of cooling medium, cooling medium is VN303 quenching oil, uses not open oil to stir in cooling procedure
The type of cooling mixed；The cold treatment carries out in cold treatment equipment, and cold treatment equipment is ZT100D cryogenic box, the cold treatment
When temperature be -70 ± 5 DEG C, soaking time be 60~90 minutes；The tempering temperature is 155 ± 5 DEG C, soaking time 150
~180 minutes.
In conclusion the indexs such as microstructure hardness of bearing parts meet after being heat-treated according to above-mentioned technique
The heat-treatment distortion of JB/T1255 standard requirements, bearing parts reduces, and size qualification rate reaches 95% or more.It solves high-precision
Close bearing ring heat-treatment distortion is big, the low problem of size qualification rate.
It should be noted that the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of high-accuracy bearing parts heat treatment process, including quenching-cold treatment-tempering, it is characterised in that: the quenching exists
It is carried out in quenching apparatus, the temperature of the quenching is 845 ± 5 DEG C, and soaking time is 35~40 minutes, then in cooling medium
Effect is lower 10 minutes cooling；The cold treatment carries out in cold treatment equipment, and the temperature of the cold treatment is -70 ± 5 DEG C, heat preservation
Time is 60~90 minutes；The temperature of the tempering is 155 ± 5 DEG C, and soaking time is 150~180 minutes.
2. a kind of high-accuracy bearing parts heat treatment process according to claim 1, it is characterised in that: the quenching apparatus
Net furnace is cast for RZD-90.
3. a kind of high-accuracy bearing parts heat treatment process according to claim 1, it is characterised in that: the cold treatment is set
Standby is ZT100D cryogenic box.
4. a kind of high-accuracy bearing parts heat treatment process according to claim 1, it is characterised in that: the cooling medium
For VN303 quenching oil, the type of cooling that uses not open oil to stir in cooling procedure.
5. a kind of high-accuracy bearing parts heat treatment process according to claim 1, it is characterised in that: the quenching into
Expect that frequency is 3~5Kg/ times.
6. a kind of high-accuracy bearing parts heat treatment process according to claim 1, it is characterised in that: the bearing parts
Using GCr15 high-carbon-chromium bearing steel, bearing accuracy grade is the machine tool mainshaft bearing lasso of P4, diameter range in 50~200mm,
Effective thickness is in 3~12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811511829.2A CN109439880A (en) | 2018-12-11 | 2018-12-11 | A kind of high-accuracy bearing parts heat treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811511829.2A CN109439880A (en) | 2018-12-11 | 2018-12-11 | A kind of high-accuracy bearing parts heat treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109439880A true CN109439880A (en) | 2019-03-08 |
Family
ID=65557891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811511829.2A Pending CN109439880A (en) | 2018-12-11 | 2018-12-11 | A kind of high-accuracy bearing parts heat treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109439880A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897481A (en) * | 2021-09-29 | 2022-01-07 | 武汉理工大学 | Heat treatment method of steel bearing ring |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006322017A (en) * | 2005-05-17 | 2006-11-30 | Nsk Ltd | Rolling bearing |
| CN105506235A (en) * | 2015-12-15 | 2016-04-20 | 常熟市常轴轴承有限公司 | Heat treatment process of high carbon chromium bearing steel bearing ring |
| CN105779716A (en) * | 2014-12-13 | 2016-07-20 | 重庆环德科技有限公司 | Heat treatment process for bearing steel |
| CN105936972A (en) * | 2016-06-24 | 2016-09-14 | 中航工业哈尔滨轴承有限公司 | Heat treatment technique for special-purpose bearing part made of high-carbon-chromium bearing steel |
| CN106555132A (en) * | 2016-12-02 | 2017-04-05 | 机械科学研究总院青岛分院 | A kind of high-carbon-chromium bearing steel Technology for Heating Processing |
-
2018
- 2018-12-11 CN CN201811511829.2A patent/CN109439880A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006322017A (en) * | 2005-05-17 | 2006-11-30 | Nsk Ltd | Rolling bearing |
| CN105779716A (en) * | 2014-12-13 | 2016-07-20 | 重庆环德科技有限公司 | Heat treatment process for bearing steel |
| CN105506235A (en) * | 2015-12-15 | 2016-04-20 | 常熟市常轴轴承有限公司 | Heat treatment process of high carbon chromium bearing steel bearing ring |
| CN105936972A (en) * | 2016-06-24 | 2016-09-14 | 中航工业哈尔滨轴承有限公司 | Heat treatment technique for special-purpose bearing part made of high-carbon-chromium bearing steel |
| CN106555132A (en) * | 2016-12-02 | 2017-04-05 | 机械科学研究总院青岛分院 | A kind of high-carbon-chromium bearing steel Technology for Heating Processing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897481A (en) * | 2021-09-29 | 2022-01-07 | 武汉理工大学 | Heat treatment method of steel bearing ring |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100359036C (en) | Cast steel for bearing parts in mechanical lifting system and its making process | |
| CN103436679B (en) | Differential temperature heat treatment method of minor-diameter high chromium cast-iron roll | |
| CN104087742A (en) | Differential temperature heat treatment method for centrifugal compound high-chromium steel roller | |
| CN102115809A (en) | Environment-friendly heat treatment process for large shaft forgings | |
| CN101660165A (en) | Heat treatment process of preparing bearing roller by using G20CrNi2MoA steel instead of G20Cr2Ni4A steel | |
| CN105401091A (en) | 42CrMo shaft part and heat treatment process thereof | |
| CN109439880A (en) | A kind of high-accuracy bearing parts heat treatment process | |
| CN104232859A (en) | Heat treatment method for GCr15SiMn steel | |
| Korotkov | Wear resistance of plasma-hardened materials | |
| CN109321826A (en) | A kind of high manganese and low chromium type hot die steel and preparation method thereof | |
| CN104726674B (en) | A kind of stainless steel thin pieces vacuum hardening Technology for Heating Processing | |
| CN101805882A (en) | Process for controlling deformation of gas nitrocarburizing part | |
| Yu | Analysis on influencing factors and control measures of metal materials heat treatment deformation | |
| CN109868350A (en) | A kind of alloy steel heat treatment process | |
| CN111560498B (en) | High-temperature isothermal quenching process for high-chromium alloy casting grinding ball | |
| CN109097532A (en) | A kind of cold roll heat treatment process | |
| CN106702098A (en) | Hardening and tempering process for 40Cr steel camshaft | |
| Stančeková et al. | Influence of machining and heat treatment on deformations of thin-walled bearings | |
| CN112609124A (en) | 1Cr17Ni2 stainless steel screw and heat treatment process thereof | |
| CN106269872A (en) | The production method of the invar made-up belt that a kind of cost is relatively low and efficiency is higher | |
| CN105821181B (en) | A kind of heat treatment method of metal | |
| CN104227340A (en) | GCr15 ring gauge processing process capable of being conveniently processed mechanically and conveniently used | |
| CN110295280A (en) | A kind of sprue bush processing renovation technique | |
| CN109355617A (en) | A kind of 30Cr2Ni2WVA nitriding method | |
| JP2005133212A (en) | Heat treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190308 |