首页>
外国专利>
PICKLING AND PASSIVE FILM TREATING AGENT FOR REMOVING SCALES AND RUSTS ON WELDING PARTS OF STAINLESS STEEL PIPES AND STRUCTURES
PICKLING AND PASSIVE FILM TREATING AGENT FOR REMOVING SCALES AND RUSTS ON WELDING PARTS OF STAINLESS STEEL PIPES AND STRUCTURES
展开▼
机译:酸洗和钝化膜处理剂,用于去除不锈钢管材和结构件焊接部位的结垢和残渣
展开▼
页面导航
摘要
著录项
相似文献
摘要
A composition for pickling a welded portion and a rust-generated portion according to installation of pipes, structures, plants, and so on formed of stainless steel, and for forming a passive state film thereon is provided. More particularly, the present disclosure relates to a neutral agent for passivating a surface of stainless steel metal in which a neutral agent is obtained by neutralizing a basic aqueous solution to 6.9 pH to 7.1 pH and aerated with carbon dioxide-free air to increase the amount of dissolved oxygen, so that an oxidation reduction potential in a range of 170 mV to 310 mV is obtained.
展开▼