CN105420609A - 抗断裂发动机曲轴制备方法 - Google Patents
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/30—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
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- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
- C23C8/22—Carburising of ferrous surfaces
Abstract
本发明公开了一种抗断裂发动机曲轴制备方法,加工步骤包括:铸造杆料毛坯,控制杆料毛坯的各化学成分的重量百分比应满足下述要求:C0.28~0.35、Mn0.25~0.35、Si0.15~0.35、W0.01-0.04、P≤0.025、S≤0.035、Ni0.55~1.20、Co0.35~0.45、Sn0.20~0.30、Al≤0.20;本发明提高了发动机曲轴的强度,达到了高强度发动机曲轴所需的硬度值、强度值,解决了高强度下发动机曲轴的延迟断裂和疲劳断裂,在使用中连接可靠,不易折断,提高了发动机曲轴寿命,满足了社会上各行业对高强度发动机曲轴的使用需求。
Description
技术领域
本发明涉及到螺栓的加工方法,尤其是一种抗断裂发动机曲轴制备方法。
背景技术
大多数连杆制造使用中碳钢和低合金钢,国内传统工艺连杆毛坯材料一般采用42CrMo,35CrMo,40MnVB,45CrMnB等调质钢和S43CVS1,35MnV,40MnS等非调质钢。在加工工艺方面国内外连杆生产方式大致有:锻造、铸造、粉末冶金等,今年了连杆制造都采用模锻工艺。
发动机曲轴目前的加工方式一般为车削的成型,强度往往难以保证,有时在使用中产生掉头、杆部断裂等不安全现象,对工业生产危害很大。因此发动机曲轴生产方法加以研究和改进,是目前生产和研究方向。
发明内容
本发明的目的在于避免现有技术中的不足之处,而提供一种抗断裂发动机曲轴制备方法。
本发明的目的通过以下技术方案如下:
抗断裂发动机曲轴制备方法,加工步骤包括:
a、铸造曲轴毛坯,控制曲轴毛坯的各化学成分的重量百分比应满足下述要求:C2.28~2.55、Mn1.05~1.35、Si0.45~0.55、W0.01-0.04、P≤0.025、S≤0.02、Bi0.15~1.25、Cr2.35~2.55、Sn0.15~0.25、0.08≤V≤0.14、0.01≤Li≤0.05,余量为铁;
b、第一次是将曲轴在550-650℃下加热5-6小时,再40-50分钟内升温至980-1020℃,保持加热时间20-30分钟,用淬火油进行淬火,再将淬火后曲轴在500-520℃下进行回火保持30-40分钟,再从回火炉中取出放入340-370℃的回火油中随油缓冷;第二次是将曲轴在700℃±20℃下,用水性淬火液进行淬火,再将淬火后的曲轴在550-600℃下进行回火,持续时间50-60分钟;
c、最后进行渗碳处理,将渗碳剂送入回火炉内,在800~950℃温度范围内渗碳处理80~100min;
d、曲轴分别进行盐浴淬火池处理、真空渗氮处理,盐浴处理温度为100-115℃,盐浴处理保温时间为2-3h,熔盐各成分重量比为:亚硝酸钾20-22份、纯碱15-17份、氯化钠4-6份、碳酸铝5-7份、硝酸钠7-10份;真空渗氮处理是先将真空炉排气至真空度0.12-0.18Pa后,将铸态曲轴升温至455~485℃,同时以1.4-1.6L/min送入氨气,炉压控制在0.25-0.35Pa。
所述铸造曲轴毛坯,控制曲轴毛坯的各化学成分的重量百分比应满足下述要求:C2.41、Mn1.2、Si0.5、W0.025、P0.015、S0.01、Bi0.2、Cr2.45、Sn0.2、V0.11、Li0.03,余量为铁。
本发明提高了发动机曲轴的强度,达到了高强度发动机曲轴所需的硬度值、强度值,解决了高强度下发动机曲轴的延迟断裂和疲劳断裂,在使用中连接可靠,不易折断,提高了发动机曲轴寿命,满足了社会上各行业对高强度发动机曲轴的使用需求。
本发明发动机曲轴进行了多次表面处理工艺,提高了发动机曲轴整体强度,精度高,质量好,生产效率高,无切削无废料,单位成本大大下降。得到了整体金属流向方向一致的发动机曲轴,大大提高了其抗拉强度;热处理工艺的发明突破了曲轴传统热处理的合金钢材的极限,其超强超韧性的特色已领先国内紧固件行业水平。
具体实施方式
结合以下实施例对本发明作进一步描述:
抗断裂发动机曲轴制备方法,加工步骤包括:
a、铸造曲轴毛坯,控制曲轴毛坯的各化学成分的重量百分比应满足下述要求:C2.41、Mn1.2、Si0.5、W0.025、P0.015、S0.01、Bi0.2、Cr2.45、Sn0.2、V0.11、Li0.03,余量为铁;
b、第一次是将曲轴在550-650℃下加热5-6小时,再40-50分钟内升温至980-1020℃,保持加热时间20-30分钟,用淬火油进行淬火,再将淬火后曲轴在500-520℃下进行回火保持30-40分钟,再从回火炉中取出放入340-370℃的回火油中随油缓冷;第二次是将曲轴在700℃±20℃下,用水性淬火液进行淬火,再将淬火后的曲轴在550-600℃下进行回火,持续时间50-60分钟;
c、最后进行渗碳处理,将渗碳剂送入回火炉内,在800~950℃温度范围内渗碳处理80~100min;
d、曲轴分别进行盐浴淬火池处理、真空渗氮处理,盐浴处理温度为100-115℃,盐浴处理保温时间为2-3h,熔盐各成分重量比为:亚硝酸钾20-22份、纯碱15-17份、氯化钠4-6份、碳酸铝5-7份、硝酸钠7-10份;真空渗氮处理是先将真空炉排气至真空度0.12-0.18Pa后,将铸态曲轴升温至455~485℃,同时以1.4-1.6L/min送入氨气,炉压控制在0.25-0.35Pa。
综上所述,采用本发明热处理后冲击曲轴性能:表面硬度HRC54~60,心硬度HRC34~40,夏比V型缺口试样冲击功(AKV)≥90J。渗碳后采用快速淬火的方使表面组织有效的转化为马氏体,得以硬化;而心部组织有相对缓慢的冷却速度,使曲轴心部保持了较高的韧性。该方法不仅缩短曲轴的加工时间,提高生产效率,而且使曲轴具较高的表面硬度和耐磨性,心部又具有较好韧性和抗冲击性,进而提高了曲轴的使用寿节约采矿成本。
Claims (2)
1.抗断裂发动机曲轴制备方法,其特征在于,加工步骤包括:
a、铸造曲轴毛坯,控制曲轴毛坯的各化学成分的重量百分比应满足下述要求:C2.28~2.55、Mn1.05~1.35、Si0.45~0.55、W0.01-0.04、P≤0.025、S≤0.02、Bi0.15~1.25、Cr2.35~2.55、Sn0.15~0.25、0.08≤V≤0.14、0.01≤Li≤0.05,余量为铁;
b、第一次是将曲轴在550-650℃下加热5-6小时,再40-50分钟内升温至980-1020℃,保持加热时间20-30分钟,用淬火油进行淬火,再将淬火后曲轴在500-520℃下进行回火保持30-40分钟,再从回火炉中取出放入340-370℃的回火油中随油缓冷;第二次是将曲轴在700℃±20℃下,用水性淬火液进行淬火,再将淬火后的曲轴在550-600℃下进行回火,持续时间50-60分钟;
c、最后进行渗碳处理,将渗碳剂送入回火炉内,在800~950℃温度范围内渗碳处理80~100min;
d、曲轴分别进行盐浴淬火池处理、真空渗氮处理,盐浴处理温度为100-115℃,盐浴处理保温时间为2-3h,熔盐各成分重量比为:亚硝酸钾20-22份、纯碱15-17份、氯化钠4-6份、碳酸铝5-7份、硝酸钠7-10份;真空渗氮处理是先将真空炉排气至真空度0.12-0.18Pa后,将铸态曲轴升温至455~485℃,同时以1.4-1.6L/min送入氨气,炉压控制在0.25-0.35Pa。
2.根据权利要求1所述的抗断裂发动机曲轴制备方法,其特征在于:所述铸造曲轴毛坯,控制曲轴毛坯的各化学成分的重量百分比应满足下述要求:C2.41、Mn1.2、Si0.5、W0.025、P0.015、S0.01、Bi0.2、Cr2.45、Sn0.2、V0.11、Li0.03,余量为铁。
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106521307A (zh) * | 2016-11-14 | 2017-03-22 | 安徽名杰净化科技有限公司 | 一种防裂空气净化器铸铁底座制备方法 |
CN106563798A (zh) * | 2016-11-01 | 2017-04-19 | 安徽恒均粉末冶金科技股份有限公司 | 一种发动机芯轴粉末冶金制备方法 |
CN112442641A (zh) * | 2019-08-29 | 2021-03-05 | 广州汽车集团股份有限公司 | 一种发动机高强度曲轴及其制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102226254A (zh) * | 2011-06-10 | 2011-10-26 | 钢铁研究总院 | 一种高强高韧耐蚀高温轴承齿轮钢及制备方法 |
CN103084532A (zh) * | 2012-12-04 | 2013-05-08 | 安徽六方重联机械股份有限公司 | T形螺栓加工方法 |
CN105238993A (zh) * | 2015-09-29 | 2016-01-13 | 高鹏 | 一种船舶用钢制舱门制作工艺 |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102226254A (zh) * | 2011-06-10 | 2011-10-26 | 钢铁研究总院 | 一种高强高韧耐蚀高温轴承齿轮钢及制备方法 |
CN103084532A (zh) * | 2012-12-04 | 2013-05-08 | 安徽六方重联机械股份有限公司 | T形螺栓加工方法 |
CN105238993A (zh) * | 2015-09-29 | 2016-01-13 | 高鹏 | 一种船舶用钢制舱门制作工艺 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106563798A (zh) * | 2016-11-01 | 2017-04-19 | 安徽恒均粉末冶金科技股份有限公司 | 一种发动机芯轴粉末冶金制备方法 |
CN106521307A (zh) * | 2016-11-14 | 2017-03-22 | 安徽名杰净化科技有限公司 | 一种防裂空气净化器铸铁底座制备方法 |
CN112442641A (zh) * | 2019-08-29 | 2021-03-05 | 广州汽车集团股份有限公司 | 一种发动机高强度曲轴及其制备方法 |
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Application publication date: 20160323 |