CN103382516A - XC 45 steel high-frequency layer-by-layer heating induction quenching method - Google Patents
XC 45 steel high-frequency layer-by-layer heating induction quenching method Download PDFInfo
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- CN103382516A CN103382516A CN2013103306067A CN201310330606A CN103382516A CN 103382516 A CN103382516 A CN 103382516A CN 2013103306067 A CN2013103306067 A CN 2013103306067A CN 201310330606 A CN201310330606 A CN 201310330606A CN 103382516 A CN103382516 A CN 103382516A
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- 238000010791 quenching Methods 0.000 title claims abstract description 57
- 230000000171 quenching effect Effects 0.000 title claims abstract description 49
- 238000010438 heat treatment Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 29
- 239000010959 steel Substances 0.000 title claims abstract description 29
- 230000006698 induction Effects 0.000 title claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 238000005507 spraying Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000005496 tempering Methods 0.000 description 6
- 230000035515 penetration Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention discloses an XC 45 steel high-frequency layer-by-layer heating induction quenching method. By adjusting high-frequency induction quenching parameters, low quenching hardness is obtained when the hardening layer depth is guaranteed. The method specifically includes heating for the first time, placing a workpiece on a high-frequency quenching machine, heating the workpiece to 860-890 DEG C within 1.9-2.1s, and complete austenitizing; cooling for the first time, keeping the workpiece heated for the first time still, standing, cooling the workpiece naturally until the color of the workpiece is dark red; heating for the second time, setting certain current and heating; cooling and quenching, directly spraying and quenching the workpiece heated for the second time, adjusting water aqua quenching bath flow to be 15-20 ml/s, adjusting quenching bath concentration to be 9-10%, and adjusting the quenching bath temperature to be 27-30 DEG C. The method is simple in process and low in device requirements, shortens production cycles, reduces production cost and improves production efficiency.
Description
Technical field
What the present invention relates to is the automobile component high-frequency induction hardenings, particularly XC45 steel high frequency heat induced quenching method successively.
Background technology
The XC45 steel is steel commonly used in automobile component, and it is high-quality carbon element structural steel, the not high easy machining of hardness, and in order to satisfy the product use properties, piece surface generally need to carry out induction quenching.
According to the drawing technical requirements of product, generally can carry out intermediate frequency or high-frequency quenching to the workpiece different sites, then carry out tempering, the hardness that obtains requiring.But some workpiece technical requirements is higher, and the hardness requirement of different sites is differed larger.In the unappeasable situation of tempering of quenching respectively more together, just need first lower to hardness regional induction quenching, then use higher temperature tempering, quenched in hardness requirement higher zone again after work-piece cools, use at last lower temperature tempering.So not only production cost is high, and the production cycle is long, is unfavorable for the raising of production efficiency.
Summary of the invention
The purpose of this part is to summarize some aspects of embodiments of the invention and briefly introduces some preferred embodiments.May do a little simplification or omit to avoid making the purpose of this part, specification digest and denomination of invention fuzzy in this part and the application's specification digest and denomination of invention, and this simplification or omit and can not be used for limiting the scope of the invention.
Problem in view of above-mentioned and/or existing XC45 steel high frequency successively exists in the heat induced quenching method has proposed the present invention.
Therefore, one of them purpose of the present invention is to provide successively heat induced quenching method of a kind of XC45 steel high frequency, the method is for induction hardening process process complicated in above prior art, successively heat induced quenching method of a kind of special XC45 steel high frequency is provided, by adjusting the parameter of induction heating, obtain higher surface hardness when guaranteeing case depth after namely forging.
For solving the problems of the technologies described above, according to an aspect of the present invention, the invention provides following technical scheme: a kind of XC45 steel high frequency is the heat induced quenching method successively, it obtains lower quenching hardness by adjusting the high-frequency induction hardening parameter when guaranteeing case depth, specifically comprise, heating for the first time, workpiece is placed on high-frequency hardening machine, workpiece is heated to 860～890 ℃ in 1.9～2.1S, complete austenitizing; Cooling for the first time, the workpiece after heating is for the first time kept motionless, standing, workpiece naturally cools to dark red; Second-heating is set certain electric current and is heated;
Cooling Quenching, through the workpiece of second-heating, directly spray quench, regulate aqua hardening liquid flow 15～20ml/s, hardening liquid concentration 9～10%, 27～30 ℃ of quench fluid temperatures.
As XC45 steel high frequency of the present invention a kind of preferred version of heat induced quenching method successively, wherein: described heating for the first time, current settings 150～160A controls the zone of heating degree of depth 1.4～1.8mm.
As XC45 steel high frequency of the present invention a kind of preferred version of heat induced quenching method successively, wherein: described cooling for the first time, after heating finished for the first time, standing 0.2S allowed workpiece naturally cool to dark red.
As XC45 steel high frequency of the present invention a kind of preferred version of heat induced quenching method successively, wherein: described heating for the second time, current settings is 150A, be 0.5S heat-up time.
As XC45 steel high frequency of the present invention a kind of preferred version of heat induced quenching method successively, wherein: described Cooling Quenching is the product through second-heating, and direct spray quench after standing 0.1S is come out of the stove after fully cooling.
Beneficial effect of the present invention: after heat-treating with heat treating method provided by the invention, the surface hardness of XC45 product made from steel quenching face is 57～58HRC, case depth is 1.5～1.8mm(480HV1), with reference to JB/T9204～2008---the metallographic examination of steel part induction quenching, be organized as 4 grades, structural state is good.Technique of the present invention is comparatively simple, and equipment requirements is not high, and has shortened the production cycle and reduced production cost, has improved production efficiency.This technique is comparatively simple, and equipment requirements is not high, and production efficiency is high, and cost is lower, through the XC45 product made from steel that this thermal treatment process is processed, no matter be hardness, structure property all can satisfy technical requirements, the tempering thereby a minute order that has substituted complexity is quenched has reduced cost, favourable enhancing productivity.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
A lot of details have been set forth in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here and implement, those skilled in the art can be in the situation that do similar popularization without prejudice to intension of the present invention, so the present invention is not subjected to the restriction of following public specific embodiment.
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiments of the present invention are described in further detail.
Below by specific examples, content of the present invention is further illustrated.In practice, after processing, the product case depth satisfies 1～2mm, and surface hardness is 57～58HRC, and the metallographic structure in the zone of quenching is uniform quenched martensite.
Special XC45 steel high frequency is the heat induced quenching method successively, specifically through for the first time the heating, for the first time cooling, for the second time the heating and the several steps of Cooling Quenching:
Heating for the first time: workpiece is placed on high-frequency hardening machine, workpiece is heated to 860～890 ℃ in 1.9～2.1S, complete austenitizing, color is azarin.Current settings 150～160A controls the zone of heating degree of depth 1.4～1.8mm, detects after actual heat penetration need be quenched and cut.
Cooling for the first time: after heating finished, it is motionless that workpiece keeps, standing 0.2S, and workpiece naturally cools to dark red.
For the second time the heating: the workpiece of heating reheats after standing 0.2S, current settings 150A, heat-up time 0.5S.
Cooling Quenching: through the product of second-heating, direct spray quench after standing 0.1S is regulated aqua hardening liquid flow 15～20ml/s, hardening liquid concentration 9～10%, 27～30 ℃ of quench fluid temperatures.Come out of the stove after workpiece is fully cooling.
Described heating for the first time, for the first time cooling, heat these operations for the second time,, be in order to ensure heat penetration, heat penetration is controlled at 1.4～1.8mm.Described operation Cooling Quenching is in order to reduce the temperature when quenching, to obtain lower surface hardness after quenching.
After the heat treating method that provides with this invention technical scheme is heat-treated, the surface hardness of XC45 product made from steel quenching face is 57～58HRC, case depth is 1.5～1.8mm(480HV1), with reference to JB/T9204～2008---the metallographic examination of steel part induction quenching, be organized as 4 grades, structural state is good.Technique of the present invention is comparatively simple, and equipment requirements is not high, and has shortened the production cycle and reduced production cost, has improved production efficiency.
Be not difficult to find out, after heat-treating with heat treating method provided by the invention, the surface hardness of XC45 product made from steel quenching face is 57～58HRC, case depth is 1.5～1.8mm(480HV1), with reference to JB/T9204～2008---the metallographic examination of steel part induction quenching, be organized as 4 grades, structural state is good.Technique of the present invention is comparatively simple, and equipment requirements is not high, and has shortened the production cycle and reduced production cost, has improved production efficiency.This technique is comparatively simple, and equipment requirements is not high, and production efficiency is high, and cost is lower, through the XC45 product made from steel that this thermal treatment process is processed, no matter be hardness, structure property all can satisfy technical requirements, the tempering thereby a minute order that has substituted complexity is quenched has reduced cost, favourable enhancing productivity.
Simultaneously, three kinds of materials of XC45, C45 and 45# are all steel of the same race, and only both are trades mark of country variant, and both can substitute mutually, process so technique of the present invention also is applicable to the induction quenching of C45 and 45# product certainly.
It should be noted that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (5)
1. XC45 steel high frequency heat induced quenching method successively, it is characterized in that: it obtains lower quenching hardness by adjusting the high-frequency induction hardening parameter when guaranteeing case depth, specifically comprise,
Heating, be placed in workpiece on high-frequency hardening machine for the first time, workpiece is heated to 860～890 ℃ in 1.9～2.1S, complete austenitizing;
Cooling for the first time, the workpiece after heating is for the first time kept motionless, standing, workpiece naturally cools to dark red;
Heating, set certain electric current and heat for the second time;
Cooling Quenching, through the workpiece of second-heating, directly spray quench, regulate aqua hardening liquid flow 15～20ml/s, hardening liquid concentration 9～10%, 27～30 ℃ of quench fluid temperatures.
2. XC45 steel high frequency according to claim 1 heat induced quenching method successively, it is characterized in that: described heating for the first time, current settings 150～160A controls the zone of heating degree of depth 1.4～1.8mm.
3. XC45 steel high frequency according to claim 1 heat induced quenching method successively, it is characterized in that: described cooling for the first time, after heating finished for the first time, standing 0.2S allowed workpiece naturally cool to dark red.
4. XC45 steel high frequency according to claim 1 heat induced quenching method successively is characterized in that: described heating for the second time, and current settings is 150A, be 0.5S heat-up time.
5. XC45 steel high frequency according to claim 1 heat induced quenching method successively, it is characterized in that: described Cooling Quenching is the product through second-heating, direct spray quench after standing 0.1S is come out of the stove after fully cooling.
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| CN201310330606.7A CN103382516B (en) | 2013-07-31 | 2013-07-31 | XC45 steel high-frequency layer-by-layer heating induction quenching method |
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| CN201310330606.7A CN103382516B (en) | 2013-07-31 | 2013-07-31 | XC45 steel high-frequency layer-by-layer heating induction quenching method |
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| CN103382516B CN103382516B (en) | 2015-03-25 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3682721A (en) * | 1969-01-15 | 1972-08-08 | Aeg Elotherm Gmbh | Process for the improvement of the development of the texture of inductive surface-hardened steel parts |
| JPH09241749A (en) * | 1996-03-04 | 1997-09-16 | High Frequency Heattreat Co Ltd | Induction hardening method |
| JP2001020016A (en) * | 1999-07-09 | 2001-01-23 | Mazda Motor Corp | Heat treatment method of metallic member |
| CN101314809A (en) * | 2008-07-17 | 2008-12-03 | 上海交通大学 | Cast iron series mould material thermal treatment method capable of acquiring controllable and uniform rigidity |
| CN101660025A (en) * | 2009-09-28 | 2010-03-03 | 洛阳Lyc轴承有限公司 | Medium frequency induction hardening process of super large diameter bearing steel castings |
| JP2011208201A (en) * | 2010-03-29 | 2011-10-20 | Aisin Aw Co Ltd | Method for manufacturing bearing parts, and bearing parts |
-
2013
- 2013-07-31 CN CN201310330606.7A patent/CN103382516B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3682721A (en) * | 1969-01-15 | 1972-08-08 | Aeg Elotherm Gmbh | Process for the improvement of the development of the texture of inductive surface-hardened steel parts |
| JPH09241749A (en) * | 1996-03-04 | 1997-09-16 | High Frequency Heattreat Co Ltd | Induction hardening method |
| JP2001020016A (en) * | 1999-07-09 | 2001-01-23 | Mazda Motor Corp | Heat treatment method of metallic member |
| CN101314809A (en) * | 2008-07-17 | 2008-12-03 | 上海交通大学 | Cast iron series mould material thermal treatment method capable of acquiring controllable and uniform rigidity |
| CN101660025A (en) * | 2009-09-28 | 2010-03-03 | 洛阳Lyc轴承有限公司 | Medium frequency induction hardening process of super large diameter bearing steel castings |
| JP2011208201A (en) * | 2010-03-29 | 2011-10-20 | Aisin Aw Co Ltd | Method for manufacturing bearing parts, and bearing parts |
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Address after: 224100 No. 299, Nanxiang West Road, Dafeng Economic and Technological Development Zone, Yancheng City, Jiangsu Province Patentee after: Qianchao Senwei Co.,Ltd. Country or region after: China Address before: No. 299 Nanxiang Road, Economic Development Zone, Dafeng City, Yancheng City, Jiangsu Province, 224100 Patentee before: JIANGSU SUNWAY PRECISION FORGING Co.,Ltd. Country or region before: China |
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