IMPACT LOAD OF WELDS AFTER MICRO-JET COOLING

被引：35
|
作者：
Hadrys, D. [1 ]
机构：
[1] Higher Sch Labour Safety Management Katowice, Dept Labour Safety Management, Fac Tech Sci, 8 Bankowa Str, PL-40007 Katowice, Poland
来源：
ARCHIVES OF METALLURGY AND MATERIALS | 2015年 / 60卷 / 04期
关键词：
welding; micro-jet cooling; coefficient of restitution; plastic strain; dynamic conditions;
D O I：
10.1515/amm-2015-0409
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Micro-jet cooling is an innovative method of forced cooling. It could be used to cooling after welding immediately. It allows to obtain welds with better properties in comparison to ordinary welding method. Favourable structure of weld metal deposit (WMD) with higher content of acicular ferrite (AF) could be obtained. These properties can be controlled by several variables (e. g. type of cooling gas, number of jets). Plastic properties are particularly important in case of impact load. This type of strength is very dangerous for the structure and for safety of users (ex. car body during car crash). This article presents the influence of the cooling gas and the number of jets on plastic properties of the weld joint for impact load. It is described by restitution coefficient and plastic strain.
引用
收藏
页码：2525 / 2528
页数：4
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