CN107900323A - 一种双排链轮 - Google Patents

一种双排链轮 Download PDF

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CN107900323A
CN107900323A CN201711171905.5A CN201711171905A CN107900323A CN 107900323 A CN107900323 A CN 107900323A CN 201711171905 A CN201711171905 A CN 201711171905A CN 107900323 A CN107900323 A CN 107900323A
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powder
chain wheel
duplex chain
pressed compact
binding agent
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郑玉平
郑彦彬
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WENLING HENGFENG POWDER METALLURGY Co Ltd
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    • 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
    • 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
    • B22F3/1003—Use of special medium during sintering, e.g. sintering aid
    • B22F3/1007—Atmosphere
    • 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
    • B22F5/08—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
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing 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
    • C22C38/18—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
    • 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
    • C23C8/28—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 more than one element being applied in one step
    • C23C8/30—Carbo-nitriding
    • C23C8/32—Carbo-nitriding of ferrous surfaces
    • 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
    • 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
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Powder Metallurgy (AREA)

Abstract

本发明提供了一种双排链轮，属于机械技术领域。它解决了现有的双排链轮强度不佳的问题。本双排链轮由以下质量百分比的原料制得：铁粉92～94，铜粉2.5～2.8，锰粉0.4～1.0，镍粉1.8～2.6,石墨粉0.4～1.0，铬粉0.2～0.6，润滑剂0.6～1.0，粘结剂0.30～0.5。本双排链轮具有强度高的优点。

Description

一种双排链轮
技术领域
本发明属于机械技术领域，涉及一种双排链轮。
背景技术
双排链轮，是指具有双排轮齿的链轮。现有的双排链轮是通过粉末冶金方法生产的，其存在强度差、单齿齿抗低、抗冲击差、容易产生崩齿问题。
发明内容
本发明的目的是针对现有的技术存在上述问题，提出了一种双排链轮，解决的技术问题是如何提高强度和抗冲击性能。
本发明的目的可通过下列技术方案来实现：一种双排链轮，其特征在于，由以下质量百分比的原料制得：铁粉92～94，铜粉2.5～2.8，锰粉0.4～1.0，镍粉1.8～2.6,石墨粉0.4～1.0，铬粉0.2～0.6，润滑剂0.6～1.0，粘结剂0.30～0.5。
在上述的双排链轮中，所述的粘结剂为防偏析粘结剂。
与现有技术相比，本双排链轮以铁作为基体，其中，镍、铬、润滑剂和粘结剂向基体扩散，提高了基体与硬质粒子的结合强度，从而有效提高链轮的强度和抗冲击性能。
附图说明
图1是双排链轮的前视结构示意图。
图2是双排链轮的剖视结构示意图。
图3是压坯的剖视结构示意图。
图中，1、压坯；2、环槽。
具体实施方式
以下是本发明的具体实施例并结合附图，对本发明的技术方案作进一步的描述，但本发明并不限于这些实施例。
实施例一
双排链轮由以下质量百分比的原料制得：铁粉92～94，铜粉2.5～2.8，锰粉0.4～1.0，镍粉1.8～2.6,石墨粉0.4～1.0，铬粉0.2～0.6，润滑剂0.6～1.0，防偏析粘结剂0.30～0.5。
本双排链轮加工工艺包括以下步骤：
A、混料：将包括铁粉、铜粉、锰粉、镍粉、铬粉、石墨粉、润滑剂和防偏析粘结剂在内的原料投入到混合机内进行搅拌混合。作为优选，上述原料的比例为：铁粉93，铜粉2.6，锰粉0.5，镍粉2.0,石墨粉0.5，铬粉0.4，润滑剂0.8，防偏析粘结剂0.4。
B、将混合后的原料倒入模具内压制成密度为7.3～7.36g/cm3的压坯1，其中，控制模具的温度为130～150℃，单位压制压力为6.5～7.5T/cm2。上述的压坯1的形状如附图3所示。
C、环槽2加工：将压坯1装夹在车床上，并通过车削的方式在压坯1的侧壁上加工出环槽2。加工完毕后，将压坯1从车床上取下，此时，压坯1的形状与双排链轮的形状是相同的，如附图1和附图2所示。
D、烧结：将完成环槽2加工后的压坯1放入到烧结炉内，并在氢气和氮气所组成的混合气体的保护下烧结35～45分钟，其中，烧结温度控制在1130～1150℃。优选，烧结时间为40分钟；烧结温度控制在1140℃；氢气和氮气所组成的混合气体的比例为：氢气占5％，氮气占95％。
E、热处理：将烧结后的压坯1放入到热处理炉内，然后将热处理炉抽真空，接着往热处理炉内通入碳氮共渗用混合气体并进行碳氮共渗处理，其中，处理温度控制860～880℃，处理时间为40～50分钟。作为优选，碳氮共渗用混合气体由丙烷和氮气组成，其中，丙烷占碳氮共渗用混合气体体积的85％，氮气占碳氮共渗用混合气体体积的15％；处理温度控制在870℃，处理时间为45分钟。
F、油淬：在840～860℃的温度下对经过热处理后的压坯1进行油淬处理。优选上述的温度为850℃。
G、冷却：在110℃/10min的冷却速度下对油淬后的压坯1进行油冷处理，使压坯1的温度冷却至180～200℃。
H、回火：将冷却后的压坯1放入到回火炉内进行回火处理，回火温度控制在180～200℃，回火时间控制在55～65min。优选回火温度控制在190℃，回火时间为1h。
I、真空清洗：将回火后的压坯1放入到清洗设备内，以洗去压坯1表面和压坯1孔隙中的油污。
J、孔隙密封：将清洗后的压坯1放入到封孔机内，并通过封孔剂以密封压坯1从里到外分布的孔隙。优选上述的封孔剂为TS-2型封孔剂。
K、镀彩锌：用化学或者电化学的方法在压坯1表面上产生一层有色膜或干扰膜。
实施例二
本实施例二同实施例一的结构及原理基本相同，不一样的地方在于：用于制造双排链轮的原料的比例为：铁粉92，铜粉2.5，锰粉0.4，镍粉1.8,石墨粉0.4，铬粉0.2，润滑剂0.6，防偏析粘结剂0.3。
实施例三
本实施例三同实施例一的结构及原理基本相同，不一样的地方在于：用于制造双排链轮的原料的比例为：铁粉94，铜粉2.8，锰粉1.0，镍粉2.6,石墨粉1，铬粉0.6，润滑剂1，防偏析粘结剂0.5。
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。

Claims (2)

1.一种双排链轮，其特征在于，由以下质量百分比的原料制得：铁粉92～94，铜粉2.5～2.8，锰粉0.4～1.0，镍粉1.8～2.6,石墨粉0.4～1.0，铬粉0.2～0.6，润滑剂0.6～1.0，粘结剂0.30～0.5。
2.根据权利要求1所述的双排链轮，其特征在于，所述的粘结剂为防偏析粘结剂。
CN201711171905.5A 2017-11-22 2017-11-22 一种双排链轮 Pending CN107900323A (zh)

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Application publication date: 20180413