Bimetal Machine Tool by Full Mold Process

Li Zengmin; Xiao Zhande; Li Lixin

doi:10.15980/j.tzzz.2014.09.063

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Bimetal Machine Tool by Full Mold Process
Vol. 34, Issue 9, Pages: 962-964(2014)
Published： 2014 ，
DOI： 10.15980/j.tzzz.2014.09.063

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[1]李增民,肖占德,李立新.采用双金属实型铸造工艺生产机床铸件[J].特种铸造及有色合金,2014,34(09):962-964.

Li Zengmin, Xiao Zhande, Li Lixin. Bimetal Machine Tool by Full Mold Process. [J]. Special Casting & Nonferrous Alloys 34(9):962-964(2014)
[1]李增民,肖占德,李立新.采用双金属实型铸造工艺生产机床铸件[J].特种铸造及有色合金,2014,34(09):962-964. DOI： 10.15980/j.tzzz.2014.09.063.

Li Zengmin, Xiao Zhande, Li Lixin. Bimetal Machine Tool by Full Mold Process. [J]. Special Casting & Nonferrous Alloys 34(9):962-964(2014) DOI： 10.15980/j.tzzz.2014.09.063.

摘要

以冲压模具实型铸件为例

介绍了双金属铸造工艺。泡沫模型采用密度为17kg/m3的EPS板材;涂料采用普通石墨粉水基涂料;型砂为冷硬呋喃树脂砂;采用开放式浇注系统

第一包铁水（含Cr和Mo的HT300合金铸铁）在1 360℃浇注

在浇注完之前2

浇注第二包铁水（材质为HT300

浇注温度为1 380℃）

且第二包铁水质量为第一包的2倍。铸件尺寸、外观、色泽均合格;经热处理后下部工作面硬度（HBS）为195

上部硬度为170;抗拉强度大于300MPa。

Abstract

Taken full mold casting stamping die as samples

the basic procedure and key caution of bimetal casting process were described.Foamed pattern adopted EPS materials with 17kg/m3 in density with conventional graphite water-based coating and cold cured furan resin sand mould.Open gating system was designed

where the first package liquid iron（HT300with Cr and Mo）was poured into the mould at 1 360℃

and the second package liquid iron（HT300）was poured into the mould ahead of 2

scompleting the first package pouring with 2times of the first package weight.The results show that the size

appearance and color of the castings produced meet the quality requirement.After heat treatment

the hardness of the bottom and upper working surface reaches 195（HBS）and 170（HBS）

and tensile strength is more than 300 MPa.