大、中型离心铸型金属筒套截面中拉应力的估算方法

杨大韬; 杨为勤

doi:10.15980/j.tzzz.2013.12.020

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大、中型离心铸型金属筒套截面中拉应力的估算方法
Estimating Method of Pulling Stress for Cross Section of Metal Barrel Casing in Centrifugal Casting Mould
2013年33卷第12期页码：1165-1169
纸质出版日期： 2013 ，
DOI： 10.15980/j.tzzz.2013.12.020

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[1]杨大韬,杨为勤.大、中型离心铸型金属筒套截面中拉应力的估算方法[J].特种铸造及有色合金,2013,33(12):1165-1169.

Yang Datao, Yang Weiqin. Estimating Method of Pulling Stress for Cross Section of Metal Barrel Casing in Centrifugal Casting Mould[J]. Special Casting & Nonferrous Alloys, 2013,33(12):1165-1169.
[1]杨大韬,杨为勤.大、中型离心铸型金属筒套截面中拉应力的估算方法[J].特种铸造及有色合金,2013,33(12):1165-1169. DOI： 10.15980/j.tzzz.2013.12.020.

Yang Datao, Yang Weiqin. Estimating Method of Pulling Stress for Cross Section of Metal Barrel Casing in Centrifugal Casting Mould[J]. Special Casting & Nonferrous Alloys, 2013,33(12):1165-1169. DOI： 10.15980/j.tzzz.2013.12.020.

摘要

在铸件内圆尺寸缺乏时

无法计算离心铸型金属筒套截面中受到的拉应力。当铸型铸件壁厚比在确定的范围内

通过对立式及卧式离心铸型、铸件的参数进行数值分析

通过所建立的拉应力估算公式

对金属筒套截面中的拉应力做出估算

并给出估算的最大偏差率。当铸型铸件壁厚比分布不均衡时

估算的偏差率也较大

进一步给出按待估算铸型外径的局部范围内取值的方法

可降低估算偏差率。

Abstract

It is difficult to calculate pulling stress in cross section of spinning mould metal barrel casing with absence of inner circle size of casting.With a fixed wall-thickness ratio of castings via mould

aiming at analyzing parameters of vertical and horizontal castings and mould

through established calculation method of pulling stress

pulling stress in cross section of metal barrel casing was estimated

and maximum error in calculation was determined.With un-even wall-thickness ratio of castings via mould

error exhibits relatively high.The estimating error rate could be reduced by selecting the estimating value at the partial range of pre-estimating external diameters.