CN103382516B - XC45 steel high-frequency layer-by-layer heating induction quenching method - Google Patents
XC45 steel high-frequency layer-by-layer heating induction quenching method Download PDFInfo
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- CN103382516B CN103382516B CN201310330606.7A CN201310330606A CN103382516B CN 103382516 B CN103382516 B CN 103382516B CN 201310330606 A CN201310330606 A CN 201310330606A CN 103382516 B CN103382516 B CN 103382516B
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- 238000010791 quenching Methods 0.000 title claims abstract description 55
- 230000000171 quenching effect Effects 0.000 title claims abstract description 45
- 238000010438 heat treatment Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 25
- 239000010959 steel Substances 0.000 title claims abstract description 25
- 230000006698 induction Effects 0.000 title claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 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
- 238000005516 engineering process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000611009 Nematalosa come Species 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
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000000463 material Substances 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 auto parts and components high-frequency induction hardenings, particularly XC45 steel high frequency successively heat induced process for quenching.
Background technology
XC45 steel is steel conventional in auto parts and components, and it is high-quality carbon element structural steel, and the not high Cutting free processing of hardness, in order to meet product serviceability, piece surface generally needs to carry out impewdance matching.
According to the drawing technical requirement of product, generally can carry out intermediate frequency or high-frequency quenching to workpiece different parts, then carry out tempering, obtain the hardness required.But some workpiece technical requirement is higher, larger to the hardness requirement difference of different parts.Quenching in the unappeasable situation of tempering together respectively again, just needing first lower to hardness region impewdance matching, then use higher temperature tempering, region quenching higher to hardness requirement again after work-piece cools, finally uses 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 object of this part is some aspects of general introduction embodiments of the invention and briefly introduces some preferred embodiments.May do in the specification digest and denomination of invention of this part and the application a little simplify or omit with avoid making this part, specification digest and denomination of invention object fuzzy, and this simplification or omit and can not be used for limiting the scope of the invention.
In view of Problems existing in above-mentioned and/or existing XC45 steel high frequency successively heat induced process for quenching, propose the present invention.
Therefore, one of them object of the present invention is to provide a kind of XC45 steel high frequency successively heat induced process for quenching, the method is for induction hardening process process complicated in above prior art, provide a kind of special XC45 steel high frequency successively heat induced process for quenching, namely pass through the parameter of adjustment eddy-current heating after forging, while ensureing case depth, obtain higher case hardness.
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 successively heat induced process for quenching, it, by adjustment high-frequency induction hardening parameter, obtains lower quenching hardness, specifically comprises while guaranteeing case depth, first time heating, workpiece is placed on high-frequency hardening machine, in 1.9 ~ 2.1S by workpiece heat to 860 ~ 890 DEG C, complete austenitizing; First time cooling, the workpiece after first time heating is kept motionless, and leave standstill, workpiece naturally cools to dark red; Post bake, sets certain electric current and heats;
Cooling Quenching, through the workpiece of post bake, direct spray quench, regulates aqua quenching liquid flow 15 ~ 20ml/s, quenching liquid concentration 9 ~ 10%, quench fluid temperature 27 ~ 30 DEG C.
As a kind of preferred version of XC45 steel high frequency of the present invention successively heat induced process for quenching, wherein: described first time heating, current settings 150 ~ 160A, controls the zone of heating degree of depth 1.4 ~ 1.8mm.
As a kind of preferred version of XC45 steel high frequency of the present invention successively heat induced process for quenching, wherein: described first time cooling, after first time, heating terminated, leaves standstill 0.2S, allow workpiece naturally cool to dark red.
As a kind of preferred version of XC45 steel high frequency of the present invention successively heat induced process for quenching, wherein: described second time heating, current settings is 150A, and the heat time is 0.5S.
As a kind of preferred version of XC45 steel high frequency of the present invention successively heat induced process for quenching, wherein: described Cooling Quenching, be through the product of post bake, leave standstill after 0.1S directly spray quench, fully come out of the stove after cooling.
Beneficial effect of the present invention: after heat-treating with heat treatment method provided by the invention, the case hardness in XC45 product made from steel quenching face is 57 ~ 58HRC, case depth is 1.5 ~ 1.8mm(480HV1), with reference to JB/T9204 ~ 2008---steel part impewdance matching metal lographic examination, be organized as 4 grades, structural state is good.Present invention process is comparatively simple, and equipment requirement is not high, and shortens the production cycle and reduce production cost, improves production efficiency.This technique is comparatively simple, and equipment requirement is not high, and production efficiency is high, and cost is lower, through the XC45 product made from steel of this Technology for Heating Processing process, no matter be hardness, structure property, all can meet technical requirement, thus instead of a complicated point sequence and to quench tempering, reduce cost, favourablely to enhance productivity.
Detailed description of the invention
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Set forth a lot of detail 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 to implement, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention, therefore the present invention is by the restriction of following public specific embodiment.
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiments of the present invention are described in further detail.
Below by instantiation, content of the present invention is illustrated further.In practice, after process, product case depth meets 1 ~ 2mm, and case hardness is 57 ~ 58HRC, and the metallographic structure of hardened area is uniform quenched martensite.
Special XC45 steel high frequency successively heat induced process for quenching, concrete through first time heating, first time cooling, second time heating and the several step of Cooling Quenching:
First time heating: workpiece is placed on high-frequency hardening machine, in 1.9 ~ 2.1S by workpiece heat to 860 ~ 890 DEG C, complete austenitizing, color is azarin.Current settings 150 ~ 160A, controls the zone of heating degree of depth 1.4 ~ 1.8mm, and actual heat penetration need be quenched and be cut rear detection.
First time cooling: after heating terminates, workpiece keeps motionless, and leave standstill 0.2S, workpiece naturally cools to dark red.
Second time heating: the workpiece of heating, after standing 0.2S, reheats, current settings 150A, heat time 0.5S.
Cooling Quenching: through the product of post bake, direct spray quench after leaving standstill 0.1S, regulates aqua quenching liquid flow 15 ~ 20ml/s, quenching liquid concentration 9 ~ 10%, quench fluid temperature 27 ~ 30 DEG C.Come out of the stove after workpiece fully cools.
Described first time heating, first time cooling, second time heat these operations, be in order to ensure heat penetration, heat penetration controls at 1.4 ~ 1.8mm.Described operation Cooling Quenching is the temperature in order to reduce during quenching, obtains lower case hardness after quenching.
After the heat treatment method provided with this invention technical scheme is heat-treated, the case hardness in XC45 product made from steel quenching face is 57 ~ 58HRC, case depth is 1.5 ~ 1.8mm(480HV1), with reference to JB/T9204 ~ 2008---steel part impewdance matching metal lographic examination, be organized as 4 grades, structural state is good.Present invention process is comparatively simple, and equipment requirement is not high, and shortens the production cycle and reduce production cost, improves production efficiency.
Be not difficult to find out, after heat-treating with heat treatment method provided by the invention, the case hardness in XC45 product made from steel quenching face is 57 ~ 58HRC, case depth is 1.5 ~ 1.8mm(480HV1), with reference to JB/T9204 ~ 2008---steel part impewdance matching metal lographic examination, be organized as 4 grades, structural state is good.Present invention process is comparatively simple, and equipment requirement is not high, and shortens the production cycle and reduce production cost, improves production efficiency.This technique is comparatively simple, and equipment requirement is not high, and production efficiency is high, and cost is lower, through the XC45 product made from steel of this Technology for Heating Processing process, no matter be hardness, structure property, all can meet technical requirement, thus instead of a complicated point sequence and to quench tempering, reduce cost, favourablely to enhance productivity.
Meanwhile, XC45, C45 and 45# tri-kinds of materials are all steel of the same race, and only both are trades mark of country variant, and both can substitute mutually, so technique of the present invention is also applicable to the impewdance matching process of C45 and 45# product certainly.
It should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (1)
1. an XC45 steel high frequency successively heat induced process for quenching, is characterized in that: it, by adjustment high-frequency induction hardening parameter, obtains lower quenching hardness, specifically comprise while guaranteeing case depth,
First time heating, is placed in workpiece on high-frequency hardening machine, in 1.9 ~ 2.1S by workpiece heat to 860 ~ 890 DEG C, complete austenitizing, the heating of described first time, current settings 150 ~ 160A, controls the zone of heating degree of depth 1.4 ~ 1.8mm;
First time cooling, the workpiece after first time heating is kept motionless, and leave standstill, workpiece naturally cools to dark red, and described first time cooling, after first time, heating terminated, leaves standstill 0.2S, allow workpiece naturally cool to dark red;
Second time heating, sets certain electric current and heats, described second time heating, and current settings is 150A, and the heat time is 0.5S;
Cooling Quenching, through the workpiece of post bake, direct spray quench, regulate aqua quenching liquid flow 15 ~ 20ml/s, quenching liquid concentration 9 ~ 10%, quench fluid temperature 27 ~ 30 DEG C, described Cooling Quenching, be through the product of post bake, direct spray quench after leaving standstill 0.1S, fully comes out of the stove after cooling.
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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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| CN103382516A (en) | 2013-11-06 |
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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 |