Manufacturing of Excavator Bucket Teeth by Composite Technology of Vacuum Investment Casting Combining with Steel Ball Chilling Vibration

Zhou Xiaoguang1; Yang Zonglian2; Ye Shengping1; Li Huazhou2; Han Jie3

doi:10.15980/j.tzzz.2012.05.019

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Manufacturing of Excavator Bucket Teeth by Composite Technology of Vacuum Investment Casting Combining with Steel Ball Chilling Vibration
Vol. 32, Issue 5, Pages: 453-455(2012)
Published： 2012 ，
DOI： 10.15980/j.tzzz.2012.05.019

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[1]周晓光,杨宗联,叶升平,李华周,韩杰.挖掘机斗齿复合生产工艺[J].特种铸造及有色合金,2012,32(05):453-455.

Zhou Xiaoguang1, Yang Zonglian2, Ye Shengping1, et al. Manufacturing of Excavator Bucket Teeth by Composite Technology of Vacuum Investment Casting Combining with Steel Ball Chilling Vibration. [J]. Special Casting & Nonferrous Alloys 32(5):453-455(2012)
[1]周晓光,杨宗联,叶升平,李华周,韩杰.挖掘机斗齿复合生产工艺[J].特种铸造及有色合金,2012,32(05):453-455. DOI： 10.15980/j.tzzz.2012.05.019.

Zhou Xiaoguang1, Yang Zonglian2, Ye Shengping1, et al. Manufacturing of Excavator Bucket Teeth by Composite Technology of Vacuum Investment Casting Combining with Steel Ball Chilling Vibration. [J]. Special Casting & Nonferrous Alloys 32(5):453-455(2012) DOI： 10.15980/j.tzzz.2012.05.019.

摘要

挖掘机斗齿是挖掘机中的易磨损件

铸件要求齿尖高硬度

具有高耐磨性

其他部位有高的强韧性。基于真空熔模钢丸激冷振动复合铸造工艺

成功生产出高强度、高韧性挖掘机斗齿。经过热处理后

性能明显优于其他方法生产出的产品性能

硬度（HRC）为50

冲击韧度为21.3J.cm-2

抗拉强度为1673MPa

且获得了更多的马氏体组织。相对普通熔模铸件

耐磨性提高了70%。

Abstract

Due to easy to wear

Excavator’s teeth requires high hardness and high wear resistance for teeth tip as well as high strength and toughness for the other.Based on composite technology of vacuum investment casting combining with steel shot chilling and vibration

bucket teeth of excavator was manufactured successfully with high strength and high toughness.After heat treatment

properties of the bucket teeth are obviously superior to ones produced by other technologies.Hardness and impact toughness

tensile strength of the bucket teeth reach HRC50

21.3 J·cm-2 and 1 673 MPa

respectively.Meanwhile

the more martensite structure can be observed in the castings.Wear resistance is increased by 1.7 times compared with those by other technologies.

关键词

真空熔模铸造振动浇注钢丸激冷斗齿

Keywords

Vacuum Investment PouringVibration PouringSteel Shot ChillBucket Teeth

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Origination of Defects in Bucket Teeth in Squeeze Casting and its Countermeasures