CN106755768A - 轴承钢制量块热处理工艺 - Google Patents

轴承钢制量块热处理工艺 Download PDF

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CN106755768A
CN106755768A CN201510830771.8A CN201510830771A CN106755768A CN 106755768 A CN106755768 A CN 106755768A CN 201510830771 A CN201510830771 A CN 201510830771A CN 106755768 A CN106755768 A CN 106755768A
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workpiece
temperature
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黄亚楠
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Qingdao Gerunde New Material Co Ltd
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Qingdao Gerunde New Material Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/04Hardening by cooling below 0 degrees Celsius
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

一种轴承钢制量块热处理工艺,其特征是经过预热,淬火,冷冻处理,时效处理,保温、研磨工艺步骤。处理后的工件表面硬度高、耐磨性能好、精度高。

Description

轴承钢制量块热处理工艺
技术领域
本发明涉及一种机械加工中的热处理方法,特别是一种轴承钢制量块热处理工艺。
背景技术
现有技术中,在对轴承钢制量块热处理时,通常采用先调质处理,再进行表面渗碳淬火工艺,处理后的量块在使用过程中容易出现尺寸变化现象,精度下降,测量误差大。
发明内容
本发明的目的是为了克服上述不足之处,而提供一种处理后的工件表面硬度高、耐磨性能好、精度高的轴承钢制量块热处理工艺。
为实现上述发明目的,本发明采用的具体工艺步骤如下:
1、预热:将经球化退火处理的工件置于加热炉内,在500℃~600℃温度下预加热30~35分钟。
2、淬火:将经上述预热后的工件置于中温盐浴炉中,在840℃~850℃温度下保温18~22分钟后,将工件取出,迅速淬入轻柴油或10号机油中冷却,待工件温度降至200℃时取出,用水冲洗干净。
3、冷冻处理:将经淬火处理后的工件在30分钟内及时放入冷冻箱内,在-75℃~-80℃温度下保温2~4小时。
4、时效处理:将经冷冻后的工件粗磨后,置于油炉保温箱中,在110℃~120℃温度下保温35~36小时后,取出缓冷。
5、保温、研磨:将经时效处理后的工件精磨后,再放入油炉保温箱中,在110℃~120℃温度下保温7.5~8小时后转入研磨工序。
本发明由于采用以上工艺方法,处理后的工件表面硬度高、耐磨性能好、精度高。
具体实施方式
1、将经球化退火后的硬度达到HB187~207、金相组织的球化珠光体2~4级、碳化物偏析≤3级的工件置于加热炉内,在500℃~600℃温度下预加热30~35分钟。
2、将经上述预热后的工件置于中温盐浴炉中,在840℃~850℃温度下保温18~22分钟后,将工件取出,迅速淬入轻柴油或10号机油中冷却,待工件温度降至200℃时取出,用水冲洗干净。
3、将经上述淬火处理后的工件在30分钟内及时放入冷冻箱内,在-75℃~-80℃温度下保温2~4小时。
4、将经上述冷冻后的工件粗磨后,置于油炉保温箱中,在110℃~120℃温度下保温35~36小时后,取出缓冷。
5、将经上述时效处理后的工件精磨后,再放入油炉保温箱中,在110℃~120℃温度下保温7.5~8小时后转入研磨工序。

Claims (1)

1.一种轴承钢制量块热处理工艺,其特征是经过如下工艺步骤:
(1)、预热:将经球化退火处理的工件置于加热炉内,在500℃~600℃温度下预加热30~35分钟;
(2)、淬火:将经上述预热后的工件置于中温盐浴炉中,在840℃~850℃温度下保温18~22分钟后,将工件取出,迅速淬入轻柴油或10号机油中冷却,待工件温度降至200℃时取出,用水冲洗干净;
(3)、冷冻处理:将经淬火处理后的工件在30分钟内及时放入冷冻箱内,在-75℃~-80℃温度下保温2~4小时;
(4)、时效处理:将经冷冻后的工件粗磨后,置于油炉保温箱中,在110℃~120℃温度下保温35~36小时后,取出缓冷;
(5)、保温、研磨:将经时效处理后的工件精磨后,再放入油炉保温箱中,在110℃~120℃温度下保温7.5~8小时后转入研磨工序。
CN201510830771.8A 2015-11-25 2015-11-25 轴承钢制量块热处理工艺 Pending CN106755768A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107460284A (zh) * 2017-08-29 2017-12-12 安徽省含山县兴建铸造厂 一种提高防震锤钢绞线使用寿命的方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107460284A (zh) * 2017-08-29 2017-12-12 安徽省含山县兴建铸造厂 一种提高防震锤钢绞线使用寿命的方法

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