CN105983705A - 汽车变速箱齿轮粉末冶金制备方法 - Google Patents

汽车变速箱齿轮粉末冶金制备方法 Download PDF

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CN105983705A
CN105983705A CN201511011207.XA CN201511011207A CN105983705A CN 105983705 A CN105983705 A CN 105983705A CN 201511011207 A CN201511011207 A CN 201511011207A CN 105983705 A CN105983705 A CN 105983705A
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powder
gear
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杨贤亮
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ANHUI YUEZHONG AUTO BODY EQUIPMENT Co Ltd
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ANHUI YUEZHONG AUTO BODY EQUIPMENT Co Ltd
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    • 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
    • B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
    • 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
    • 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
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • 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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing 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
    • 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
    • B22F2003/023—Lubricant mixed with the metal powder
    • 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
    • B22F2003/241—Chemical after-treatment on the surface
    • B22F2003/242—Coating
    • 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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  • Chemical & Material Sciences (AREA)
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  • Mechanical Engineering (AREA)
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  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)

Abstract

本发明公开了汽车变速箱齿轮粉末冶金制备方法，包括有以下步骤，选用粉末原料包括有作为预合金的铬：0.65-0.95%、钼：0.7-1.2%、铜0.8-1.2%、碳0.2-0.5%、钴0.08-0.12%、钙1.2-1.4%、钛0.4-0.8%、粘合剂1.2-1.5%、0.04-0.09%的润滑剂，余量为铁粉；本发明以合金钢粉为主，能够提高金属部件强度、耐腐蚀性、耐磨性且减低了制造成本的粉末冶金材料。

Description

汽车变速箱齿轮粉末冶金制备方法
技术领域
本发明涉及粉末冶金领域，具体属于汽车变速箱齿轮粉末冶金制备方法。
背景技术
向铁基粉末中混合石墨粉等合金用粉末和硬脂酸、硬脂酸锉等润滑剂粉末而形成铁基粉末混合粉体后，将该铁基粉末混合粉体填充到金属模具，加压成形而制造粉末冶金用铁基粉末成形体(压粉体)。其中，铁基粉末根据成分可分为铁粉(纯铁粉等)、合金钢粉等。并且，铁基粉末根据制造方法还可分为雾化铁粉、还原铁粉等。铁基粉末成形体的密度一般为6.67.1 Mg/m³。对于这些铁基粉末成形体进一步实施烧结处理而形成烧结体，并且根据需要实施精整、切削加工而形成粉末冶金制品。并且，需要提高拉伸强度、疲劳强度时，烧结后还实施渗碳热处理、光亮热处理。目前，我国常用的铁基粉末冶金材料合有铜、镍、钼等较贵重的有色金属，成本较高，且强度和耐磨性差，制品尺寸精度难以控制。
发明内容
本发明的目的上提供一种汽车变速箱齿轮粉末冶金制备方法，一种以合金钢粉为主，能够提高金属部件强度、耐腐蚀性、耐磨性且减低了制造成本的粉末冶金变速箱齿轮。
本发明所采用的技术方案为：
汽车变速箱齿轮粉末冶金制备方法，包括有以下步骤，
a、选用粉末原料包括有作为预合金的铬：0.65-0.95%、钼：0.7-1.2%、铜0.8-1.2%、碳0.2-0.5%、钴0.08-0.12%、钙1.2-1.4%、钛0.4-0.8%、粘合剂1.2-1.5%、0.04-0.09%的润滑剂，余量为铁粉, 压制采用一次或多次填充的方式，在模具内以 660-720MPa 的压力压制 30-60 秒成型；
b、先进行正火处理，将蒸汽处理后的齿轮在700-740℃下保温1-1.5小时左右，取出后再进行淬火处理：送入热处理炉中加热到840-880℃，并保温2-3小时；然后，用淬火油冷却，最后进行回火处理：将淬火后的齿轮送入回火炉中加热到350-420℃，保温40-50min；
c、磷化处理，在100-150℃下,采用PH值为9的表面调整剂对齿轮处理5-8min，经滴空1-2min后，再采用磷化剂处理15-20min，再经滴空1-2min后，采用清水清洗1-2min，再滴空1-2min后，以将齿轮置于85-100℃的热水中处理1-2min。
所述选用粉末原料包括有作为预合金的铬：0.8%、钼：1%、铜1%、碳0.35%、钴0.1%、钙1.3%、钛0.6%、粘合剂1.35%、0.065%的润滑剂，余量为铁粉。
本发明的有益效果是：
以合金钢粉作为主体，不利用特殊的烧结工序也能够维持较高的烧结体的密度，不仅能够提高拉伸强度，还能够提高弯曲疲劳强度；由于钛的加入，使制品烧结后发生明显收缩，而铁基粉末冶金材料中大多数添加元素，例如铜、钴等，则使体积发生膨胀，因此，改变钛的加入量，可不同程度地抵捎膨胀，获得一种烧结后体积变化接近零，尺寸精确的粉末治金产品；此外，钛明显地提高铁基粉末冶金材料的强度、耐磨性和耐蚀性，同时还能进一步降低生产成本。
具体实施方式
汽车变速箱齿轮粉末冶金制备方法，包括有以下步骤，
a、选用粉末原料包括有作为预合金的铬：0.8%、钼：1%、铜1%、碳0.35%、钴0.1%、钙1.3%、钛0.6%、粘合剂1.35%、0.065%的润滑剂，余量为铁粉, 压制采用一次或多次填充的方式，在模具内以 690MPa 的压力压制 45秒成型；
b、先进行正火处理，将蒸汽处理后的齿轮在720℃下保温1.2小时左右，取出后再进行淬火处理：送入热处理炉中加热到860℃，并保温2.5小时；然后，用淬火油冷却，最后进行回火处理：将淬火后的齿轮送入回火炉中加热到385℃，保温45min；
c、磷化处理，在125℃下,采用PH值为9的表面调整剂对齿轮处理6.5min，经滴空1.5min后，再采用磷化剂处理18min，再经滴空1.5min后，采用清水清洗1.5min，再滴空1.5min后，以将齿轮置于92℃的热水中处理1.5min。

Claims (2)

1.汽车变速箱齿轮粉末冶金制备方法，其特征在于，包括有以下步骤，
a、选用粉末原料包括有作为预合金的铬：0.65-0.95%、钼：0.7-1.2%、铜0.8-1.2%、碳0.2-0.5%、钴0.08-0.12%、钙1.2-1.4%、钛0.4-0.8%、粘合剂1.2-1.5%、0.04-0.09%的润滑剂，余量为铁粉, 压制采用一次或多次填充的方式，在模具内以 660-720MPa 的压力压制 30-60 秒成型；
b、先进行正火处理，将蒸汽处理后的齿轮在700-740℃下保温1-1.5小时左右，取出后再进行淬火处理：送入热处理炉中加热到840-880℃，并保温2-3小时；然后，用淬火油冷却，最后进行回火处理：将淬火后的齿轮送入回火炉中加热到350-420℃，保温40-50min；
c、磷化处理，在100-150℃下,采用PH值为9的表面调整剂对齿轮处理5-8min，经滴空1-2min后，再采用磷化剂处理15-20min，再经滴空1-2min后，采用清水清洗1-2min，再滴空1-2min后，以将齿轮置于85-100℃的热水中处理1-2min。
2.根据权利要求1所述汽车变速箱齿轮粉末冶金制备方法，其特征在于，所述选用粉末原料包括有作为预合金的铬：0.8%、钼：1%、铜1%、碳0.35%、钴0.1%、钙1.3%、钛0.6%、粘合剂1.35%、0.065%的润滑剂，余量为铁粉。
CN201511011207.XA 2015-12-30 2015-12-30 汽车变速箱齿轮粉末冶金制备方法 Withdrawn CN105983705A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106566974A (zh) * 2016-11-01 2017-04-19 安徽恒均粉末冶金科技股份有限公司 汽车磁力水泵粉末冶金内、外磁环及其制备方法
CN107300506A (zh) * 2017-07-06 2017-10-27 安徽悦众车身装备有限公司 汽车制动进气管加热锻造检测装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106566974A (zh) * 2016-11-01 2017-04-19 安徽恒均粉末冶金科技股份有限公司 汽车磁力水泵粉末冶金内、外磁环及其制备方法
CN107300506A (zh) * 2017-07-06 2017-10-27 安徽悦众车身装备有限公司 汽车制动进气管加热锻造检测装置
CN107300506B (zh) * 2017-07-06 2019-09-20 安徽悦众车身装备有限公司 汽车制动进气管加热锻造检测装置

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Application publication date: 20161005