CN106392063A - 一种进气门座粉末冶金制备方法 - Google Patents

一种进气门座粉末冶金制备方法 Download PDF

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CN106392063A
CN106392063A CN201610936333.4A CN201610936333A CN106392063A CN 106392063 A CN106392063 A CN 106392063A CN 201610936333 A CN201610936333 A CN 201610936333A CN 106392063 A CN106392063 A CN 106392063A
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powder
raw material
mixed
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suction valve
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詹晓明
张克庆
疏金平
毕军
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ANHUI HENGJUN POWDER METALLURGY TECHNOLOGY Co Ltd
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ANHUI HENGJUN POWDER METALLURGY TECHNOLOGY Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
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    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/008—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of engine cylinder parts or of piston parts other than piston rings
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/248—Thermal after-treatment

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  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)

Abstract

本发明公开了一种进气门座粉末冶金制备方法，包括有以下步骤：配置混合粉末原料，混合粉末原料由如下重量百分比的粉末原料组成:Cu 4‑5%、Mn 4‑5%、Ni 0.8‑1.2%、Co 0.5‑0.8%、MoS2 0.5‑0.6%、Pb 0.6‑1.2%、有机硅树脂粘合剂1.6‑2.2%，Y2O3 0.15‑0.18%，余量为基料不锈钢粉末,混料后再磨制成颗粒粒径250‑300微米的粉末；本发明在原料配方中加入不同比例的金属粉末，使得制备出的进气门座达到高强度，高硬度和高扭矩的性能。

Description

一种进气门座粉末冶金制备方法
技术领域
本发明涉及进气门座领域，具体属于一种进气门座粉末冶金制备方法。
背景技术
现有技术汽车制动鼓一般是购买40Cr材料直接进行机加工得到进气门座，而机加工工艺存在耗能高，加工出来的产品加工尺寸难于精确控制、产品精度低等不足；而且，机加工过程要铣掉大量原材料，造成了材料的浪费，增加了制作成本。
现有技术也有采用粉末冶金加工工艺制作，但现有的粉末冶金工艺的制件其强度和硬度还不能稳定的达到40Cr材料的技术指标，这种情况在受力扭矩较大，适用工况恶劣的较大规格进气门座上尤为明显，因此，限制了粉末冶金技术在进气门座上的应用推广。
发明内容
本发明所要解决的技术问题是针对进气门座工艺技术现状，而提供的一种生产效率高、制造成本较低的进气门座粉末冶金制备方法。
本发明采用的技术方案如下：
一种进气门座粉末冶金制备方法，包括有以下步骤：
a、配置混合粉末原料，混合粉末原料由如下重量百分比的粉末原料组成: Cu 4-5%、Mn4-5%、Ni 0.8-1.2%、Co 0.5-0.8%、MoS2 0.5-0.6%、Pb 0.6-1.2%、有机硅树脂粘合剂1.6-2.2%，Y2O3 0.15-0.18%，余量为基料不锈钢粉末,混料后再磨制成颗粒粒径250-300微米的粉末；
b、向模具中装入步骤(a)所得的混合粉末，压制为压坯，压制压力为630MPa～670MPa，烧结炉内通入氢气，温度在1000-1100℃下烧结成型，利用氢气作为保护气氛；
c、将(b)所得烧结后产品深冷回火处理，温度为-50℃～-20℃，气压值800-1000Pa，处理时间为70～90分钟。
所述混合粉末原料由如下重量百分比的粉末原料组成: 混合粉末原料由如下重量百分比的粉末原料组成: Cu 4.5%、Mn 4.5%、Ni 1%、Co 0.65%、MoS2 0.55%、Pb 0.9%、有机硅树脂粘合剂1.9%，Y2O3 0.16%，余量为基料不锈钢粉末。
与现有技术相比，本发明的优点在于：
本发明在原料配方中加入不同比例的金属粉末，使得制备出的进气门座达到高强度，高硬度和高扭矩的性能；在配方中添加适量的稀土Y2O3，增加了产品的自润滑性能；添加了适量的镍，提高了产品的强度和硬度，合格率高，大大提高了产品的质量，适合广泛推广。
具体实施方式
一种进气门座粉末冶金制备方法，包括有以下步骤：
a、混合粉末原料由如下重量百分比的粉末原料组成: 混合粉末原料由如下重量百分比的粉末原料组成: Cu 4.5%、Mn 4.5%、Ni 1%、Co 0.65%、MoS2 0.55%、Pb 0.9%、有机硅树脂粘合剂1.9%，Y2O3 0.16%，余量为基料不锈钢粉末；
b、向模具中装入步骤(a)所得的混合粉末，压制为压坯，压制压力为650MPa，烧结炉内通入氢气，温度在1050℃下烧结成型，利用氢气作为保护气氛；
c、将(b)所得烧结后产品深冷回火处理，温度为-35℃，气压值900Pa，处理时间为80分钟。
本发明的力学检测性能如下：
实测维氏硬度：HV 223.3～240.6。
静强度实验：进气门座加载2500-3000N.m力矩时，部件无异常损坏。当进气门座加载2200-3000N.m力矩时，进气门座断裂，粉末冶金进气门座正常。
从上述实验可知，本发明的粉末冶金进气门座具有高强度、高硬度、耐磨损的优点。

Claims (2)

1.一种进气门座粉末冶金制备方法，其特征在于包括有以下步骤：
a、配置混合粉末原料，混合粉末原料由如下重量百分比的粉末原料组成: Cu 4-5%、Mn4-5%、Ni 0.8-1.2%、Co 0.5-0.8%、MoS2 0.5-0.6%、Pb 0.6-1.2%、有机硅树脂粘合剂1.6-2.2%，Y2O3 0.15-0.18%，余量为基料不锈钢粉末,混料后再磨制成颗粒粒径250-300微米的粉末；
b、向模具中装入步骤(a)所得的混合粉末，压制为压坯，压制压力为630MPa～670MPa，烧结炉内通入氢气，温度在1000-1100℃下烧结成型，利用氢气作为保护气氛；
c、将(b)所得烧结后产品深冷回火处理，温度为-50℃～-20℃，气压值800-1000Pa，处理时间为70～90分钟。
2.根据权利要求1所述的进气门座粉末冶金制备方法，其特征在于：所述混合粉末原料由如下重量百分比的粉末原料组成: 混合粉末原料由如下重量百分比的粉末原料组成:Cu 4.5%、Mn 4.5%、Ni 1%、Co 0.65%、MoS2 0.55%、Pb 0.9%、有机硅树脂粘合剂1.9%，Y2O30.16%，余量为基料不锈钢粉末。
CN201610936333.4A 2016-11-01 2016-11-01 一种进气门座粉末冶金制备方法 Pending CN106392063A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107502837A (zh) * 2017-08-29 2017-12-22 马鞍山市三川机械制造有限公司 一种用于柴油机气缸盖的合金材料

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060150768A1 (en) * 2005-01-12 2006-07-13 Snecma Powder mixture suitable for sintering to form a self-lubricating solid material
CN101941069A (zh) * 2010-05-22 2011-01-12 十堰东明斯汽车零部件有限公司 变速箱同步器齿座及粉末冶金生产工艺方法
CN103447524A (zh) * 2013-09-19 2013-12-18 安徽白兔湖动力有限公司 一种粉末冶金气门座圈及其制备方法
CN105750536A (zh) * 2015-01-06 2016-07-13 精工爱普生株式会社 粉末冶金用金属粉末、复合物、造粒粉末及烧结体
CN105983704A (zh) * 2015-12-30 2016-10-05 安徽悦众车身装备有限公司 一种气动止回阀阀体粉末冶金的制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060150768A1 (en) * 2005-01-12 2006-07-13 Snecma Powder mixture suitable for sintering to form a self-lubricating solid material
CN101941069A (zh) * 2010-05-22 2011-01-12 十堰东明斯汽车零部件有限公司 变速箱同步器齿座及粉末冶金生产工艺方法
CN103447524A (zh) * 2013-09-19 2013-12-18 安徽白兔湖动力有限公司 一种粉末冶金气门座圈及其制备方法
CN105750536A (zh) * 2015-01-06 2016-07-13 精工爱普生株式会社 粉末冶金用金属粉末、复合物、造粒粉末及烧结体
CN105983704A (zh) * 2015-12-30 2016-10-05 安徽悦众车身装备有限公司 一种气动止回阀阀体粉末冶金的制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107502837A (zh) * 2017-08-29 2017-12-22 马鞍山市三川机械制造有限公司 一种用于柴油机气缸盖的合金材料

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