CN106609321A - Heat treatment technique for outer ring of medium-carbon steel or bearing steel bearing - Google Patents
Heat treatment technique for outer ring of medium-carbon steel or bearing steel bearing Download PDFInfo
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- CN106609321A CN106609321A CN201510692240.7A CN201510692240A CN106609321A CN 106609321 A CN106609321 A CN 106609321A CN 201510692240 A CN201510692240 A CN 201510692240A CN 106609321 A CN106609321 A CN 106609321A
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Abstract
The invention discloses a heat treatment technique for the outer ring of a medium-carbon steel or bearing steel bearing and belongs to the technical field of machine manufacturing. The heat treatment technique is mainly used for the outer ring of a bearing part made of medium-carbon steel or bearing steel. Special heat treatment requirements are met through high-frequency or intermediate-frequency heating quenching, and quenching is conducted twice for heat treatment. The heat treatment technique comprises the following steps of bulk heat treatment, inductive heat treatment and temper for tissue stabilization. In order to improve the strength of a raceway of the main stressed abrasive surface of the bearing, heat treatment is conducted on the local part of an outer ring raceway; for the bearing stressed by axial force, heat treatment can be simultaneously conducted on the outer ring raceway and one end surface, the compressive strength of a friction surface is improved, and the rolling contact fatigue life of the friction surface is prolonged. The heat treatment technique for the outer ring of the medium-carbon steel or bearing steel bearing has the advantages of being high in product quality, simple in technique, low in cost and the like.
Description
Technical field
The present invention relates to machinery manufacturing technology field, is related to a kind of manufacturing process of bearing, a kind of medium carbon steel bearing steel bearing outer ring Technology for Heating Processing is concretely related to.
Background technology
Bearing is the drive disk assembly commonly used in industrial equipment field, in being widely used in various equipment, according to the difference of application scenario, bearing should have the characteristics such as long-life, high accuracy, high rigidity, low noise, high-wearing feature, in construction machinery industry, such as fork truck, stacker and excavator plant equipment will not only bear torque, moment of torsion, the load that withstands shocks also is required, this performance to bearing is put forward higher requirement.
The content of the invention
The present invention is also easy to produce various failure modes for traditional bearing in loading process, noise is big, service life is low, a kind of medium carbon steel bearing steel bearing outer ring Technology for Heating Processing is provided, the use intensity and rigidity and wearability of bearing can be increased, operating noise can be reduced, the service life of bearing can be improved, the use requirement of special occasions is met.
The technical scheme is that：A kind of medium carbon steel bearing steel bearing outer ring Technology for Heating Processing, bearing includes outer ring, inner ring, rolling element and retainer, and rolling element is steel ball or roller, it is characterised in that：Described Technology for Heating Processing is local heat treatmet, and heat processing unit is outer ring, and Technology for Heating Processing is comprised the following steps：
(1) bulk heat treatmet is quenched
Bearing outer ring first modifier treatment in heating furnace, temperature is 550 DEG C；Temperature retention time：3 hours；The type of cooling：Vacuum cooled；So that bearing outer ring integral hardness reaches HRC25～40, tempered sorbite is obtained；
(2) induction heat treatment
Heat treatment position：The mode of heating of outer ring raceway or cycle surface induction heat treatment is the heating of electromagnetic induction local surfaces, induction loop presses close to bearing outer ring inwall or end face, the profile of induction loop is consistent with bearing outer ring inwall raceway or end face, the high frequency electric source of corresponding frequencies is selected according to the requirement of product case depth, high frequency electric is passed through to induction coil, sensing heating is carried out to outer ring raceway or end face, heating certain hour is reached after hardening heat, bearing outer ring falls into immediately in hardening media and cools down, by adjusting heat time heating time, air cooling time, relation between heat transfer time and output is controlling the depth of hardened layer and transition zone；Hardened layer hardness ＞ HRC58, by outside depth 4mm of raceway；Transition region 5mm；Induction heating temperature：900℃ ；Temperature retention time：30 minutes；The type of cooling：Water-cooled；
(3) tempering stabilizing tissue
After bearing outer ring impewdance matching, tempering in time, stabilizing tissue；200 DEG C of temperature, temperature retention time 40 minutes；The type of cooling：Air is cooled down.
The material of the outer ring is medium carbon steel.
Beneficial effects of the present invention are：A kind of medium carbon steel bearing steel bearing outer ring Technology for Heating Processing that the present invention is provided, special Technology for Heating Processing is employed during manufacture, the roller surface and an end face for making bearing outer ring has high rigidity, to ensure wearability and radial and axial bearing capacity, and center portion and outer diameter face are softs, both toughness had been ensure that, can have prevented outer diameter face from injuring friction track again.The progressive formation of hardness makes bearing have buffer capacity when being hit.Present invention process is simple, compared with traditional processing method, increased the use intensity and rigidity and wearability of bearing, reduces operating noise, improves the service life of bearing, meets the use requirement of special occasions.
Specific embodiment
A kind of medium carbon steel bearing steel bearing outer ring Technology for Heating Processing, bearing includes outer ring, inner ring, rolling element and retainer, and rolling element is steel ball or roller, it is characterised in that：Described Technology for Heating Processing is local heat treatmet, and heat processing unit is outer ring, and Technology for Heating Processing is comprised the following steps：
(1) bulk heat treatmet is quenched
Bearing outer ring first modifier treatment in heating furnace, temperature is 550 DEG C；Temperature retention time：3 hours；The type of cooling：Vacuum cooled；So that bearing outer ring integral hardness reaches HRC25～40, tempered sorbite is obtained；
(2) induction heat treatment
Heat treatment position：The mode of heating of outer ring raceway or cycle surface induction heat treatment is the heating of electromagnetic induction local surfaces, induction loop presses close to bearing outer ring inwall or end face, the profile of induction loop is consistent with bearing outer ring inwall raceway or end face, the high frequency electric source of corresponding frequencies is selected according to the requirement of product case depth, high frequency electric is passed through to induction coil, sensing heating is carried out to outer ring raceway or end face, heating certain hour is reached after hardening heat, bearing outer ring falls into immediately in hardening media and cools down, by adjusting heat time heating time, air cooling time, relation between heat transfer time and output is controlling the depth of hardened layer and transition zone；Hardened layer hardness ＞ HRC58, by outside depth 4mm of raceway；Transition region 5mm；Induction heating temperature：900℃ ；Temperature retention time：30 minutes；The type of cooling：Water-cooled；
(3) tempering stabilizing tissue
After bearing outer ring impewdance matching, tempering in time, stabilizing tissue；200 DEG C of temperature, temperature retention time 40 minutes；The type of cooling：Air is cooled down.
The material of the outer ring is medium carbon steel.
The present invention employs during fabrication special Technology for Heating Processing, the roller surface and an end face for making bearing outer ring has high rigidity, and to ensure wearability and radial and axial bearing capacity, and center portion and outer diameter face are softs, both toughness had been ensure that, can have prevented outer diameter face from injuring friction track again.The progressive formation of hardness makes bearing have buffer capacity when being hit.Present invention process is simple, compared with traditional processing method, increased the use intensity and rigidity and wearability of bearing, reduces operating noise, improves the service life of bearing, meets the use requirement of special occasions.
Claims (2)
1. a kind of medium carbon steel bearing steel bearing outer ring Technology for Heating Processing, bearing includes outer ring, inner ring, rolling element and retainer, and rolling element is steel ball or roller, it is characterised in that：Described Technology for Heating Processing is local heat treatmet, and heat processing unit is outer ring, and Technology for Heating Processing is comprised the following steps：
(1) bulk heat treatmet is quenched
Bearing outer ring first modifier treatment in heating furnace, temperature is 550 DEG C；Temperature retention time：3 hours；The type of cooling：Vacuum cooled；So that bearing outer ring integral hardness reaches HRC25～40, tempered sorbite is obtained；
(2) induction heat treatment
Heat treatment position：The mode of heating of outer ring raceway or cycle surface induction heat treatment is the heating of electromagnetic induction local surfaces, induction loop presses close to bearing outer ring inwall or end face, the profile of induction loop is consistent with bearing outer ring inwall raceway or end face, the high frequency electric source of corresponding frequencies is selected according to the requirement of product case depth, high frequency electric is passed through to induction coil, sensing heating is carried out to outer ring raceway or end face, heating certain hour is reached after hardening heat, bearing outer ring falls into immediately in hardening media and cools down, by adjusting heat time heating time, air cooling time, relation between heat transfer time and output is controlling the depth of hardened layer and transition zone；Hardened layer hardness ＞ HRC58, by outside depth 4mm of raceway；Transition region 5mm；Induction heating temperature：900℃ ；Temperature retention time：30 minutes；The type of cooling：Water-cooled；
(3) tempering stabilizing tissue
After bearing outer ring impewdance matching, tempering in time, stabilizing tissue；200 DEG C of temperature, temperature retention time 40 minutes；The type of cooling：Air is cooled down.
2. according to claim 1 rolling bearing Technology for Heating Processing, it is characterised in that：The material of the outer ring is medium carbon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510692240.7A CN106609321A (en) | 2015-10-23 | 2015-10-23 | Heat treatment technique for outer ring of medium-carbon steel or bearing steel bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510692240.7A CN106609321A (en) | 2015-10-23 | 2015-10-23 | Heat treatment technique for outer ring of medium-carbon steel or bearing steel bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106609321A true CN106609321A (en) | 2017-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510692240.7A Pending CN106609321A (en) | 2015-10-23 | 2015-10-23 | Heat treatment technique for outer ring of medium-carbon steel or bearing steel bearing |
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| CN (1) | CN106609321A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112048611A (en) * | 2020-07-16 | 2020-12-08 | 张家港市弘扬金属制品制造有限公司 | Heat treatment method of bearing outer ring |
| CN112680574A (en) * | 2020-12-10 | 2021-04-20 | 钢铁研究总院 | Heat treatment process for high-nitrogen stainless bearing steel |
| CN113667812A (en) * | 2021-08-04 | 2021-11-19 | 洛阳新强联回转支承股份有限公司 | Processing method of medium carbon alloy steel non-soft-belt large-scale rolling mill bearing |
| CN115008128A (en) * | 2022-05-24 | 2022-09-06 | 万向钱潮股份公司 | Novel thin-wall bearing outer ring processing technology |
-
2015
- 2015-10-23 CN CN201510692240.7A patent/CN106609321A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112048611A (en) * | 2020-07-16 | 2020-12-08 | 张家港市弘扬金属制品制造有限公司 | Heat treatment method of bearing outer ring |
| CN112680574A (en) * | 2020-12-10 | 2021-04-20 | 钢铁研究总院 | Heat treatment process for high-nitrogen stainless bearing steel |
| CN113667812A (en) * | 2021-08-04 | 2021-11-19 | 洛阳新强联回转支承股份有限公司 | Processing method of medium carbon alloy steel non-soft-belt large-scale rolling mill bearing |
| CN115008128A (en) * | 2022-05-24 | 2022-09-06 | 万向钱潮股份公司 | Novel thin-wall bearing outer ring processing technology |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170503 |
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| WD01 | Invention patent application deemed withdrawn after publication |