CN103710498A - Heat treatment technology for forging coupler yoke - Google Patents
Heat treatment technology for forging coupler yoke Download PDFInfo
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- CN103710498A CN103710498A CN201410005431.7A CN201410005431A CN103710498A CN 103710498 A CN103710498 A CN 103710498A CN 201410005431 A CN201410005431 A CN 201410005431A CN 103710498 A CN103710498 A CN 103710498A
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- tail frame
- hook tail
- coupler yoke
- forging
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Abstract
The invention discloses a heat treatment technology for forging a coupler yoke. Coupler yoke forging steel is 25MnCrNiMoA low-alloy steel. The heat treatment technology comprises the following steps: (1) quenching, to be specific, putting the machined coupler yoke forging steel in a heating furnace, heating to 910-930 DEG C, carrying out heat preservation for 200 minutes, and then directly carrying out intense water cooling; and (2) tempering, to be specific, putting the quenched coupler yoke forging steel in a tempering furnace, heating to 530-570 DEG C, carrying out heat preservation for 220 minutes, and then carrying out water cooling. The heat treatment technology for forging the coupler yoke, provided by the invention, is reasonable in technological design and can be used for obtaining the coupler yoke which has a relatively stable microstructure and is balanced and stable in mechanical performance indexes.
Description
Technical field
The invention belongs to hook tail frame manufacturing technology field, particularly relate to a kind of forging hook tail frame thermal treatment process.
Background technology
Hook tail frame is the key part of lorry coupler buffering device.Coupler buffering device plays the company's extension effect between locomotive and vehicle, vehicle and vehicle, transmits gentle longitudinal traction power or surging force of separating train generation in service.A kind of low-alloy high-strength 25MnCrNiMoA that railway freight car coupler tail frame forged steel pieces adopts, different heat treatment parameter settings can obtain different mechanical performance indexs.Because this kind of material belongs to the special-purpose material of hook tail frame, current heat treatment process parameter is unfixing, and given thermal treatment scope width is larger, is unfavorable for the control of actually operating and corresponding mechanical performance index.
Summary of the invention
The technical problem to be solved in the present invention overcomes above-mentioned the deficiencies in the prior art exactly, and provides a kind of technological design reasonable, can access the forging hook tail frame thermal treatment process of the mechanical performance index of comparatively stable microstructure and equalization stable.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A forging hook tail frame thermal treatment process, described hook tail frame forged steel pieces is 25MnCrNiMoA low alloy steel, and carries out as follows:
(1) quench: the hook tail frame forged steel pieces after processing is placed in to process furnace, heats to 910-930 ℃, be incubated 200 minutes, direct fierce water-cooled after insulation;
(2) tempering: the hook tail frame forged steel pieces after quench treatment is placed in tempering stove, heats to 530-570 ℃, be incubated 220 minutes, water-cooled after insulation.
The beneficial effect of technical solution of the present invention is:
Hook tail frame thermal treatment process of the present invention, by setting comparatively reasonably quenching and tempering temperature, and soaking time, solved original heat-treatment temperature range larger, be difficult for actually operating and the unsettled problem of gained component mechanical performance index, obtain metallographic specimen grain fineness number 7 grades of left and right, mechanical performance index is comparatively stable, and all reach corresponding index request, and guaranteeing under the prerequisite of property indices, optimize quenching and tempering soaking time, effectively reduced single heat thermal treatment energy consumption.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail, wherein:
Fig. 1 is forging hook tail frame heat treatment process parameter graphic representation of the present invention;
Embodiment
Referring to Fig. 1, forging hook tail frame thermal treatment process of the present invention, described hook tail frame forged steel pieces is 25MnCrNiMoA low alloy steel, and carries out as follows:
(1) quench: the hook tail frame forged steel pieces after processing is placed in to process furnace, heats to 910-930 ℃, be incubated 200 minutes, direct fierce water-cooled after insulation; ;
(2) tempering: the hook tail frame forged steel pieces after quench treatment is placed in tempering stove, heats to 530-570 ℃, be incubated 220 minutes, water-cooled after insulation.
After thermal treatment completes, sample is carried out to mechanical property and other Performance Detection, control sample index request is as shown in table 1.Comparing result by table 1 can find out, property indices is all higher than index request, and sample is qualified.
Table 1: hook tail frame mechanical performance index contrast table
Hook tail frame thermal treatment process of the present invention, by setting comparatively rationally quenching and tempering temperature, and soaking time, solved original heat-treatment temperature range larger, be difficult for actually operating and the unsettled problem of gained component mechanical performance index, obtain metallographic specimen grain fineness number 7 grades of left and right, mechanical performance index is comparatively stable, and all reaches corresponding index request, and is guaranteeing under the prerequisite of property indices, optimize quenching and tempering soaking time, effectively reduced single heat thermal treatment energy consumption.
Embodiment 1:
The hook tail frame forged steel pieces material of the present embodiment is 25MnCrNiMoA low alloy steel, and its thermal treatment process is carried out as follows:
(1) quench: the hook tail frame forged steel pieces after processing is placed in to process furnace, heats to 910 ℃, be incubated 200 minutes, direct fierce water-cooled after insulation;
(2) tempering: the hook tail frame forged steel pieces after quench treatment is placed in tempering stove, heats to 530 ℃, be incubated 220 minutes, water-cooled after insulation.
Embodiment 2:
The hook tail frame forged steel pieces material of the present embodiment is 25MnCrNiMoA low alloy steel, and its thermal treatment process is carried out as follows:
(1) quench: the hook tail frame forged steel pieces after processing is placed in to process furnace, heats to 930 ℃, be incubated 200 minutes, direct fierce water-cooled after insulation;
(2) tempering: the hook tail frame forged steel pieces after quench treatment is placed in tempering stove, heats to 570 ℃, be incubated 220 minutes, water-cooled after insulation.
Embodiment 3:
The hook tail frame forged steel pieces material of the present embodiment is 25MnCrNiMoA low alloy steel, and its thermal treatment process is carried out as follows:
(1) quench: the hook tail frame forged steel pieces after processing is placed in to process furnace, heats to 910 ℃, be incubated 200 minutes, direct fierce water-cooled after insulation;
(2) tempering: the hook tail frame forged steel pieces after quench treatment is placed in tempering stove, heats to 570 ℃, be incubated 220 minutes, water-cooled after insulation.
Embodiment 4:
The hook tail frame forged steel pieces material of the present embodiment is 25MnCrNiMoA low alloy steel, and its thermal treatment process is carried out as follows:
(1) quench: the hook tail frame forged steel pieces after processing is placed in to process furnace, heats to 930 ℃, be incubated 200 minutes, direct fierce water-cooled after insulation;
(2) tempering: the hook tail frame forged steel pieces after quench treatment is placed in tempering stove, heats to 530 ℃, be incubated 220 minutes, water-cooled after insulation.
Embodiment 5:
The hook tail frame forged steel pieces material of the present embodiment is 25MnCrNiMoA low alloy steel, and its thermal treatment process is carried out as follows:
(1) quench: the hook tail frame forged steel pieces after processing is placed in to process furnace, heats to 920 ℃, be incubated 200 minutes, direct fierce water-cooled after insulation;
(2) tempering: the hook tail frame forged steel pieces after quench treatment is placed in tempering stove, heats to 550 ℃, be incubated 220 minutes, water-cooled after insulation.
Above embodiment only, in order to process program of the present invention to be described, is not intended to limit.Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art should be appreciated that its process program that still can record aforementioned each embodiment modifies, or part technical characterictic is wherein equal to replacement; Yet these modifications or replacement, do not make the essence of corresponding process program depart from the spirit and scope of various embodiments of the present invention process program.
Claims (1)
1. a forging hook tail frame thermal treatment process, is characterized in that: described hook tail frame forged steel pieces is 25MnCrNiMoA low alloy steel, and carries out as follows:
(1) quench: the hook tail frame forged steel pieces after processing is placed in to process furnace, heats to 910-930 ℃, be incubated 200 minutes, direct fierce water-cooled after insulation;
(2) tempering: the hook tail frame forged steel pieces after quench treatment is placed in tempering stove, heats to 530-570 ℃, be incubated 220 minutes, water-cooled after insulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410005431.7A CN103710498A (en) | 2014-01-03 | 2014-01-03 | Heat treatment technology for forging coupler yoke |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410005431.7A CN103710498A (en) | 2014-01-03 | 2014-01-03 | Heat treatment technology for forging coupler yoke |
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| CN103710498A true CN103710498A (en) | 2014-04-09 |
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| CN201410005431.7A Pending CN103710498A (en) | 2014-01-03 | 2014-01-03 | Heat treatment technology for forging coupler yoke |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109234499A (en) * | 2018-11-23 | 2019-01-18 | 河南中原特钢装备制造有限公司 | 25MnCrNi reinforces steel main shaft forging production method |
| CN112458362A (en) * | 2020-11-02 | 2021-03-09 | 中国神华能源股份有限公司神朔铁路分公司 | 13B type forged coupler tail frame for locomotive and production method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000256744A (en) * | 1999-03-04 | 2000-09-19 | Hyundai Boteko Co | Heat treatment of wear resistant and corrosion resistant alloy steel long shaft member and apparatus therefor |
| CN1810997A (en) * | 2005-08-30 | 2006-08-02 | Bpw(梅州）车轴有限公司 | Heat treatment process for raising comprehensive performace of low alloy structure steel |
| CN102041360A (en) * | 2010-12-21 | 2011-05-04 | 南阳汉冶特钢有限公司 | Heat treatment process for improving comprehensive performance of Q345 low alloy structural steel |
-
2014
- 2014-01-03 CN CN201410005431.7A patent/CN103710498A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000256744A (en) * | 1999-03-04 | 2000-09-19 | Hyundai Boteko Co | Heat treatment of wear resistant and corrosion resistant alloy steel long shaft member and apparatus therefor |
| CN1810997A (en) * | 2005-08-30 | 2006-08-02 | Bpw(梅州）车轴有限公司 | Heat treatment process for raising comprehensive performace of low alloy structure steel |
| CN102041360A (en) * | 2010-12-21 | 2011-05-04 | 南阳汉冶特钢有限公司 | Heat treatment process for improving comprehensive performance of Q345 low alloy structural steel |
Non-Patent Citations (2)
| Title |
|---|
| 仲晖: ""25MnNiCrMoA钢热处理工艺分析"", 《装备制造技术》 * |
| 吕振洲等: ""实时测温技术确定热处理工艺规范研究"", 《材料工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109234499A (en) * | 2018-11-23 | 2019-01-18 | 河南中原特钢装备制造有限公司 | 25MnCrNi reinforces steel main shaft forging production method |
| CN112458362A (en) * | 2020-11-02 | 2021-03-09 | 中国神华能源股份有限公司神朔铁路分公司 | 13B type forged coupler tail frame for locomotive and production method thereof |
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Application publication date: 20140409 |