CN101921901A - Heat processing method of high-carbon chromium bearing steel bearing part - Google Patents
Heat processing method of high-carbon chromium bearing steel bearing part Download PDFInfo
- Publication number
- CN101921901A CN101921901A CN 201010138856 CN201010138856A CN101921901A CN 101921901 A CN101921901 A CN 101921901A CN 201010138856 CN201010138856 CN 201010138856 CN 201010138856 A CN201010138856 A CN 201010138856A CN 101921901 A CN101921901 A CN 101921901A
- Authority
- CN
- China
- Prior art keywords
- bearing
- water
- heat processing
- based quenching
- processing method
- 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
Landscapes
- Heat Treatment Of Articles (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a heat processing method of bearing parts, in particular to a heat processing method of a high-carbon chromium bearing steel bearing part. The method comprises the following steps of: heating a GCr15 bearing steel part to the temperature of 805-835 DEG C according to effective thickness, preserving heat for each millimeter of effective thickness for 0.5-1.2 minutes, cooling to room temperature by adopting a water-based quenching medium, and tempering the part after the water-based quenching medium is cooled at the temperature of 180-250 DEG C. The invention has the advantages that the rigidity and the rigidity uniformity of a super-huge sleeve ring can be markedly improved, the heating temperature of the part in a water-based quenching process is decreased, the time is shortened, and the power consumption is saved, thereby greatly lowering the cost of bearing heat processing. The invention is more environmentally-friendly and safer. The invention has no oil smoke in the water-based quenching process, has no harmful volatile, prevents air pollution and also completely has no danger of fires.
Description
Affiliated technical field
The present invention relates to the bearing parts heat treating method, be specifically related to a kind of heat treating method of high-carbon chromium bearing steel bearing part.
Background technology
In the last hundred years, high-carbon chromium bearing steel bearing part adopts oil to quench as heat-eliminating medium always.Adopt oil-quenched heat treating method that long history is arranged, but exist several defectives that are difficult to overcome:
Cooling power a little less than, the part that thickness is bigger (GCr15: thickness＞20mm; Rolling body diameter＞40mm), super-huge product are difficult to reach the requirement of industry standard JB/T1255 after oil quenching.
2. the oil smoke severe contamination air that produces in the quenching process cleans Residual oil and also brings liquid pollutent.
3. adopt oil quenching to be prone to fire failure, dangerous.
Summary of the invention
The purpose of this invention is to provide a kind of thermal treatment quality that can improve big wall thickness GCr15 bearing parts, extra large size bearing part, fume pollution, the raising security of avoiding oil quenching to bring simultaneously, energy-saving and cost-reducing heat treating method.
The technical solution adopted in the present invention is: a kind of heat treating method of high-carbon chromium steel bearing bearing parts, the GCr15 Bearing Steel Parts is heated to 805～835 ℃ according to net thickness, every millimeter net thickness insulation is after 0.5～1.2 minute, adopt water-based quenching medium to be cooled to room temperature, the cooled part of water-based quenching medium carries out 180～250 ℃ tempering;
The present invention is applicable to the quenching of the bearing parts that high-carbon-chromium bearing steel is made, after the high-carbon-chromium bearing steel part heats as stated above according to material, adopt water-based quenching medium to cool off, obtain microstructure, hardness that complete conformance with standard requires, and better penetration of hardness.Especially big wall thickness GCr15 steel part, after thickness surpassed certain limit, indexs such as microstructure after the oil quenching and hardness can't reach the JB/T1255 standard-required.Adopt the present invention, the microstructure that obtains all is very good 2-3 level martensitic stucture, and hardness all satisfies standard-required.The penetration of hardness of big wall thickness GCr15 steel is also significantly greater than oil-quenched penetration of hardness.The present invention can significantly improve the thermal treatment quality that net thickness surpasses the GCr15 Bearing Steel Parts of 20mm, makes it to reach fully the industry standard requirement, and these are that traditional oil quenching processing method is beyond one's reach.
Simultaneously, the present invention also can significantly improve the thermal treatment quality of super-huge lasso.The present invention significantly improves the supporting capacity of bearing parts.
The invention has the beneficial effects as follows:
1. the present invention adopts water base quenching technology, and aqua quenches and significantly is better than oil quenching on thermal treatment quality, the mechanical property, and can reach industry standard JB/T1255 requirement fully on the thermal treatment quality.Through professional mechanical performance index test, water base quenching technology significantly is better than oil quenching technology on bearing load.Simultaneously, water base quenching technology can significantly improve the hardness and the uniformity of hardness of super-huge lasso, and problems such as quenching hardness deficiency then often appear in traditional oil quenching technology.
2. water base quenching technology is saved cost significantly.Comprise three aspects: steel substitute, with water for oil, save power consumption.Satisfy in quality under the prerequisite of JB/T1255 standard, adopt traditional oil quenching technology, the GCr15 rolling body can use diameter≤40mm, and the GCr15 lasso can be used to net thickness≤18mm; And after adopting water base quenching technology, the GCr15 rolling body can expand to diameter≤80mm, and the GCr15 lasso can be used to net thickness≤45mm.Can replace the GCr15SiMn steel with the GCr15 steel, performance improves, and steel product cost reduces.With water base replacement oil product, water-based hardening liquid per ton is than low 2,500.00 yuan of oil price lattice per ton, and water base consumption significantly is less than the consumption of oil; The reduction of the Heating temperature of part, time shorten in the water base quenching technology, have saved power consumption, and these all greatly reduce bearing thermal treatment cost.
3. more environmental protection is safer.Do not have oil smoke in the water base quenching process, no unwanted volatile has been stopped atmospheric pollution, has not also had the danger of fire fully
Embodiment
Embodiment 1
Bearing specification 22352MB outer ring, material GCr15, the basic size situation is: outside dimension 540mm, width are 165mm, outer internal diameter is 455mm, outer raceway S φ 484mm, net thickness 36mm, weight 67.1kg.
Aqueous medium quenching technology standard: heating installation is the RJX-75 stove, 2/stove of batch, and the Heating temperature of employing is 815 ℃, (heat insulating coefficient 1.11 minutes/mm), total heat-up time is relevant with batch, and always be 100 minutes heat-up time for soaking time 40 minutes.The moving cooling of string in water-based quenching medium after heating finishes, the model of water-based quenching medium is the compound water-soluble quenching liquid of ZHY-101 efficient inorganic polymer.Afterwards at 200 ℃ of tempering 6h.
Quality examination result after the thermal treatment:
After the quenching, hardness HRC63-64 (more than the JB/T1255 standard-required HRC60).
Temper number HRC60--61 (JB/T1255 standard-required HRC56-61).
Microstructure: 3 grades of martensitic stuctures, no troostite in the 3mm of top layer (JB/T1255 standard-required martensite 1-5 level, troostite 1-5 level in the 3mm of top layer).
Claims (1)
1. the heat treating method of a high-carbon chromium steel bearing bearing parts, it is characterized in that, this method is that the GCr15 Bearing Steel Parts is heated to 805～835 ℃ according to net thickness, every millimeter net thickness insulation is after 0.5～1.2 minute, adopt water-based quenching medium to be cooled to room temperature, the cooled part of water-based quenching medium carries out 180～250 ℃ tempering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010138856 CN101921901A (en) | 2010-03-26 | 2010-03-26 | Heat processing method of high-carbon chromium bearing steel bearing part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010138856 CN101921901A (en) | 2010-03-26 | 2010-03-26 | Heat processing method of high-carbon chromium bearing steel bearing part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101921901A true CN101921901A (en) | 2010-12-22 |
Family
ID=43337114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010138856 Pending CN101921901A (en) | 2010-03-26 | 2010-03-26 | Heat processing method of high-carbon chromium bearing steel bearing part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101921901A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220472A (en) * | 2011-05-27 | 2011-10-19 | 瓦房店东旭非标准轴承集团有限公司 | Heat treatment method of ultra-large bearing ring |
| CN102277476A (en) * | 2011-08-31 | 2011-12-14 | 武汉理工大学 | Cold-deformation and high-plasticity pretreatment process for high-carbon bearing steel |
| CN102732701A (en) * | 2012-07-17 | 2012-10-17 | 新兴铸管股份有限公司 | Method for carrying out quenching on bimetal tube with outer low-carbon steel layer and inner high-carbon-chromium bearing steel layer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1038842A (en) * | 1988-06-18 | 1990-01-17 | 大连理工大学 | The mould steel reinforcement toughening process of steel tipped structure |
| CN101445866A (en) * | 2008-12-18 | 2009-06-03 | 潍坊盛瑞动力机械科技有限公司 | Heat treatment process for water pump shaft connecting bearings |
| CN101660165A (en) * | 2009-09-28 | 2010-03-03 | 洛阳Lyc轴承有限公司 | Heat treatment process of preparing bearing roller by using G20CrNi2MoA steel instead of G20Cr2Ni4A steel |
-
2010
- 2010-03-26 CN CN 201010138856 patent/CN101921901A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1038842A (en) * | 1988-06-18 | 1990-01-17 | 大连理工大学 | The mould steel reinforcement toughening process of steel tipped structure |
| CN101445866A (en) * | 2008-12-18 | 2009-06-03 | 潍坊盛瑞动力机械科技有限公司 | Heat treatment process for water pump shaft connecting bearings |
| CN101660165A (en) * | 2009-09-28 | 2010-03-03 | 洛阳Lyc轴承有限公司 | Heat treatment process of preparing bearing roller by using G20CrNi2MoA steel instead of G20Cr2Ni4A steel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220472A (en) * | 2011-05-27 | 2011-10-19 | 瓦房店东旭非标准轴承集团有限公司 | Heat treatment method of ultra-large bearing ring |
| CN102277476A (en) * | 2011-08-31 | 2011-12-14 | 武汉理工大学 | Cold-deformation and high-plasticity pretreatment process for high-carbon bearing steel |
| CN102732701A (en) * | 2012-07-17 | 2012-10-17 | 新兴铸管股份有限公司 | Method for carrying out quenching on bimetal tube with outer low-carbon steel layer and inner high-carbon-chromium bearing steel layer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102230062A (en) | Heat treatment process for improving strength and toughness of 9SiCr die steel | |
| CN102392124A (en) | Heat treatment technology method for improving obdurability of high-speed steel | |
| CN109593948A (en) | A kind of heat treatment method reducing GCr15 steel bearings lasso grinding deformation | |
| CN105779716A (en) | Heat treatment process for bearing steel | |
| CN103589839B (en) | Heat treatment technique of high-carbon high-chromium stainless steel | |
| CN101921901A (en) | Heat processing method of high-carbon chromium bearing steel bearing part | |
| CN100469903C (en) | 6CrNiSiMnMoV steel hardness gradient tempering heat treatment processing method | |
| CN103484609B (en) | A kind of 45# steel quenching method | |
| CN105385828A (en) | Quenching-tempering heat treatment method for seamless steel tubes | |
| CN105112634A (en) | Heat treatment process for hot-working die | |
| CN103725831A (en) | Hardening and tempering process of alloy-steel pipe | |
| CN102220472A (en) | Heat treatment method of ultra-large bearing ring | |
| CN105603165A (en) | 42CrMo steel heat treatment process | |
| CN105648173A (en) | Heat treatment method of GCr15SiMn | |
| CN104404219A (en) | Spring heat treatment method | |
| CN105986088A (en) | Heat treatment process for 1Cr17Ni2 steel | |
| CN107937681A (en) | A kind of corrosion resistant type plastic mould steel heat treatment process | |
| CN102676939B (en) | Thermal treatment process for 18Cr17Ni2 modified stainless steel material | |
| CN102888495B (en) | Method for strengthening hot forging die of electric cabinet vent | |
| CN104404233A (en) | Quenching method of No. 45 steel sleeve part | |
| CN107130093B (en) | A kind of preparation method of high-strength vermicular cast iron plate | |
| CN104726650A (en) | Water-air-water quenching heat treatment process for T10 steel screw taps for machines | |
| CN104388659B (en) | Take 45MnVNb as the thermal treatment process of the individual layer concrete delivery pipe of material | |
| CN103290179B (en) | Thermal treatment method for medium carbon structural alloy steel with low hardenability | |
| CN103667619A (en) | Subcritical quenching technology of Cr5MoV cold-work mold steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20101222 |