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目前我国钢质无缝气瓶(以下简称钢瓶)的主要品种是用中碳锰合金结构钢初轧坯经热冲压拔伸法生产的正火状态三心凹底钢瓶。钢瓶的质量尚可满足使用要求,但随着科学技术的发展,用户使用要求的提高和外贸的需要,国产三心凹底气瓶的技术性能也还存在一些差距和薄弱环节。本文结合钢质无缝气瓶国家标准(报批稿)中新增加的、与气瓶安全性能直
At present, the main varieties of seamless steel cylinders (hereinafter referred to as steel cylinders) in our country are three-center concave cylinders with normalizing state produced by hot stamping and drawing method of medium carbon manganese alloy structural steel primary blank. The quality of the cylinder can still meet the requirements, but with the development of science and technology, the requirements of users and the needs of foreign trade, the technical performance of domestic three-cylinder concave gas cylinder still has some gaps and weak links. This article combines the seamless steel cylinder national standards (draft for approval) in the new increase, and the cylinder safety straight