DETERMINATION OF THE INTERFACE HEAT-TRANSFER COEFFICIENT FOR NONISOTHERMAL BULK-FORMING PROCESSES

被引：60

作者：

SEMIATIN, SL

COLLINGS, EW

WOOD, VE

ALTAN, T

机构：

[1] Battelle, Columbus, OH, USA, Battelle, Columbus, OH, USA

来源：

JOURNAL OF ENGINEERING FOR INDUSTRY-TRANSACTIONS OF THE ASME | 1987年 / 109卷 / 01期

关键词：

DATA PROCESSING - Data Reduction and Analysis - MATHEMATICAL TECHNIQUES - Finite Difference Method;

D O I：

10.1115/1.3187094

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Experimental and analytical techniques have been developed for the determination of the interface heat transfer coefficient for nonisothermal bulk-forming processes. A fixture consisting of two flat IN-100 alloy dies was instrumented with high-response thermocouples. With this tooling, heat-transfer experiments were conducted in which (1) the two dies were heated to different temperatures and brought together under varying pressure levels and (2) the two dies were heated to the same temperature and were used to upset an aluminum alloy 2024-0 ring specimen heated to a higher temperature. Data from both sets of tests were analyzed to determine heat-transfer coefficients by using calibration curves derived from analytical and finite-difference method solutions. By this means, the effects of interface pressure, deformation, and deformation rate on the heat-transfer coefficient were established.

引用

页码：49 / 57

页数：9