CN107868927A - 一种矿山牙轮零件加工方法 - Google Patents

一种矿山牙轮零件加工方法 Download PDF

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Publication number
CN107868927A
CN107868927A CN201610845575.2A CN201610845575A CN107868927A CN 107868927 A CN107868927 A CN 107868927A CN 201610845575 A CN201610845575 A CN 201610845575A CN 107868927 A CN107868927 A CN 107868927A
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Prior art keywords
gear wheel
cylindrical
mine
mine gear
processing
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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
    • C21D1/18—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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat Treatment Of Articles (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

本发明公开了一种矿山牙轮零件加工方法，所述矿山牙轮材料为15CrNiMo钢，其特征在于，该加工方法包括以下步骤：a.加工矿山牙轮零件外圆和齿部，外圆留余量；b.渗碳处理；渗碳温度为815‑990℃，渗碳时间为315‑650min，渗碳层深度为0.6‑1.42mm；c.去除外圆余量；d.淬火处理；淬火时间为65‑85min，淬火温度为805‑890℃，淬火层深度为1.15‑1.6mm；e.对零件加工至成品；f.检验入库。本发明的矿山牙轮零件加工方法，摒弃了现有技术中采用防渗涂料对零件除齿部以外的外圆面进行防渗处理的方法，消除了对产品淬火时的冷却速度和淬透性的负面影响，使零件的齿面硬度和外圆面硬度均能达到加工要求。

Description

一种矿山牙轮零件加工方法
技术领域
本发明属于加工工艺领域，具体是一种矿山牙轮零件加工方法。
背景技术
在现有技术中，一种矿山牙轮，其材料为15CrNiMo，它是一种合金结构钢，15CrNiMo圆钢的淬透性较高，无回火脆性，焊接性相当好，形成冷裂的倾向很小，可切削性及冷应变塑性良好；对于矿山牙轮零件，通常要求其齿面硬度达到56-62HRC，有效硬化层1.80-2.15mm，除齿面以外的外圆面需做防渗处理，硬度要求为30-45HRC，因此为了使矿山牙轮零件达到加工要求，一般均采用渗碳淬火的处理方法，现有技术中，产品金相组织合格，矿山牙轮零件齿面硬度为57-58HRC，防渗的外圆硬度为18-18HRC，由检验结果可知，防渗部分外圆硬度达不到加工要求，经过金相检测，产品的组织基本为铁素体和珠光体，处于退火状态，其原因是防渗涂料严重影响了产品淬火时的冷却速度和淬透性。
因此，为解决上述问题，需要一种矿山牙轮零件加工方法，使矿山牙轮零件的齿面硬度和外圆面硬度均能达到加工要求。
发明内容
鉴于现有技术存在的不足，本发明的目的是提出一种矿山牙轮零件加工方法，消除了对产品淬火时的冷却速度和淬透性的负面影响，使矿山牙轮零件的齿面硬度和外圆面硬度均能达到加工要求。
实现本发明目的的技术方案如下：
一种矿山牙轮零件加工方法，所述矿山牙轮材料为15CrNiMo钢，其特征在于，该加工方法包括以下步骤：
a.加工矿山牙轮零件外圆和齿部，外圆留余量3.2-3.7mm；
b.渗碳处理；渗碳处理的碳势为1.35-1.57%，渗碳温度为815-990℃，渗碳时间为315-650min，渗碳层深度为0.6-1.42mm，缓冷时间为65-80min；
c.去除外圆余量，余量为3.2-3.7mm；
d.淬火处理；淬火处理时炉内碳势为0.75-0.8%，淬火时间为65-85min，淬火温度为805-890℃，淬火层深度为1.15-1.6mm；
e.对零件进行表面加工至成品；
f.检验入库：对加工完毕零件进行检验，以检验是否合格，合格后入库。
本发明的一种矿山牙轮零件加工方法，摒弃了现有技术中采用防渗涂料对零件除齿部以外的外圆面进行防渗处理的方法，消除了对产品淬火时的冷却速度和淬透性的负面影响，使零件的齿面硬度和外圆面硬度均能达到加工要求。
具体实施方式
下面结合实施例对本发明作进一步说明，其操作步骤如下：
一种矿山牙轮零件加工方法，所述矿山牙轮材料为15CrNiMo钢，该加工方法包括以下步骤：
c.加工矿山牙轮零件外圆和齿部，外圆留余量3.2-3.7mm；
d.渗碳处理；渗碳处理的碳势为1.35-1.57%，渗碳温度为815-990℃，渗碳时间为315-650min，渗碳层深度为0.6-1.42mm，缓冷时间为65-80min；
c.去除外圆余量，余量为3.2-3.7mm；
d.淬火处理；淬火处理时炉内碳势为0.75-0.8%，淬火时间为65-85min，淬火温度为805-890℃，淬火层深度为1.15-1.6mm；
e.对零件进行表面加工至成品。

Claims (1)

1.一种矿山牙轮零件加工方法，所述矿山牙轮材料为15CrNiMo钢，其特征在于，该加工方法包括以下步骤：
加工矿山牙轮零件外圆和齿部，外圆留余量3.2-3.7mm；
渗碳处理；渗碳处理的碳势为1.35-1.57%，渗碳温度为815-990℃，渗碳时间为315-650min，渗碳层深度为0.6-1.42mm，缓冷时间为65-80min；
c.去除外圆余量，余量为3.2-3.7mm；
d.淬火处理；淬火处理时炉内碳势为0.75-0.8%，淬火时间为65-85min，淬火温度为805-890℃，淬火层深度为1.15-1.6mm；
e.对零件进行表面加工至成品；
f.检验入库：对加工完毕零件进行检验，以检验是否合格，合格后入库。
CN201610845575.2A 2016-09-25 2016-09-25 一种矿山牙轮零件加工方法 Withdrawn CN107868927A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109366105A (zh) * 2018-11-27 2019-02-22 胡敏 一种矿山牙轮零件加工方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109366105A (zh) * 2018-11-27 2019-02-22 胡敏 一种矿山牙轮零件加工方法

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