upset rod

基本解释

The surface cracking reasons of wire rod in upset process are analyzed.
线厂线材顶锻加工表面开裂问题进行分析。
The mechanical properties and metallographic structures of the friction welded drill rod and the hot upset forged drill rod pipe are compared.
本文叙述了这种钻杆的焊接性，并与采用热镦粗工艺生产的钻杆管体金相组织和机械性能进行了对比。
The results show that the synthetic properties of geological drill rod by friction welding are better than that of the hot upset forged drill rod.
结果表明，与热镦粗的钻杆相比，摩擦焊接的地质钻杆具有良好的综合性能。