CN107868863A - 汽车冲压模具的热处理方法 - Google Patents

汽车冲压模具的热处理方法 Download PDF

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CN107868863A
CN107868863A CN201610845489.1A CN201610845489A CN107868863A CN 107868863 A CN107868863 A CN 107868863A CN 201610845489 A CN201610845489 A CN 201610845489A CN 107868863 A CN107868863 A CN 107868863A
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mould
hours
temperature
time
annealing
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刘存福
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Chongqing Xiangyang Instrument Co Ltd
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Chongqing Xiangyang Instrument Co Ltd
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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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/32—Soft annealing, e.g. spheroidising
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/30—Stress-relieving
    • 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
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • 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
    • Y02P10/20—Recycling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Child & Adolescent Psychology (AREA)
  • Health & Medical Sciences (AREA)
  • Braking Arrangements (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

本发明公开了一种汽车冲压模具的热处理方法，其特征在于包括以下步骤：1）球化退火：将加工好的模具进行球化退火处理，经5‑15℃/s快速感应加热升温至915‑970℃，退火时间为13‑15小时；2）空冷：将退火后的模具空冷至室温；3）二次分级淬火：将上述空冷后的模具进行二次分级淬火，一次分级淬火：将模具浸入油中进行淬火，温度为850‑970℃，时间为4‑7小时；二次分级淬火：将模具浸入油中进行淬火，温度为1320℃，时间为3‑4小时；4）二级回火：一级回火:温度为350℃，回火时间为5小时；二级回火:温度为320℃，回火时间为5小时；5）去应力处理。采用本发明方法热处理后，模具表面质量好，车身报废率低，且提高了模具使用寿命，满足实际生产需要。

Description

汽车冲压模具的热处理方法
技术领域
本发明涉及一种热处理方法，具体涉及一种汽车冲压模具的热处理方法。
背景技术
冷冲压模具多为安装在压力机上的，对放置在内的板料在室温下施加变形力，使其产生变形，从而获得一定形状,尺寸和性能的产品零件的特殊专用工具。为了提高模具工作表面的耐磨性、硬度和耐蚀性，必须采用热、表处理技术。
汽车车身而言，除了一部分标准件外，几乎全部由板料冲压件焊接而成。由于车身冲压件大部分是具有一定形状的成型件，而且有很多是属于复杂空间形状的拉延件，因此冲压模具是车身质量的保证。现有车身模具加工出的车身报废率高，模具表面质量差，且模具使用寿命不足很难满足实际生产需要。
发明内容
有鉴于现有技术的上述缺陷，本发明所要解决的技术问题是一种汽车冲压模具的热处理方法，模具采用本发明方法热处理后，模具表面质量好，车身报废率低，且提高了模具使用寿命，满足实际生产需要。
为实现上述目的，本发明提供了一种汽车冲压模具的热处理方法，包括如下步骤1）球化退火：将加工好的模具进行球化退火处理，经5-15℃/s快速感应加热升温至915-970℃，退火时间为13-15小时；2）空冷：将退火后的模具空冷至室温；3）二次分级淬火：将上述空冷后的模具进行二次分级淬火，一次分级淬火：将模具浸入油中进行淬火，温度为850-970℃，时间为4-7小时；二次分级淬火：将模具浸入油中进行淬火，温度为1320℃，时间为3-4小时；4）二级回火：一级回火:温度为350℃，回火时间为5小时；二级回火:温度为320℃，回火时间为5小时；5）去应力处理。
本发明的有益效果是：采用本发明方法热处理后，模具表面质量好，车身报废率低，且提高了模具使用寿命，满足实际生产需要。
具体实施方式
本发明的技术方案是一种汽车冲压模具的热处理方法，其特征在于包括以下步骤： 1）球化退火：将加工好的模具进行球化退火处理，经15℃/s快速感应加热升温至970℃，退火时间为15小时； 2）空冷：将退火后的模具空冷至室温；3）二次分级淬火：将上述空冷后的模具进行二次分级淬火，一次分级淬火：将模具浸入油中进行淬火，温度为900℃，时间为7小时；二次分级淬火：将模具浸入油中进行淬火，温度为1320℃，时间为4小时； 4）二级回火：一级回火:温度为350℃，回火时间为5小时；二级回火:温度为320℃，回火时间为5小时； 5）去应力处理。

Claims (1)

1.一种汽车冲压模具的热处理方法，其特征在于包括以下步骤： 1）球化退火：将加工好的模具进行球化退火处理，经5-15℃/s快速感应加热升温至915-970℃，退火时间为13-15小时； 2）空冷：将退火后的模具空冷至室温； 3）二次分级淬火：将上述空冷后的模具进行二次分级淬火，一次分级淬火：将模具浸入油中进行淬火，温度为850-970℃，时间为4-7小时；二次分级淬火：将模具浸入油中进行淬火，温度为1320℃，时间为3-4小时； 4）二级回火：一级回火:温度为350℃，回火时间为5小时；二级回火:温度为320℃，回火时间为5小时；5）去应力处理。
CN201610845489.1A 2016-09-24 2016-09-24 汽车冲压模具的热处理方法 Withdrawn CN107868863A (zh)

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Application publication date: 20180403