公开(公告)号：US3887403A

公开(公告)日：1975-06-03

申请号：US40623773

申请日：1973-10-15

Applicant: MC DONNELL DOUGLAS CORP

Inventor： COGGINS DOLPHUS L

IPC: C23F1/26 ,  C23F1/02 ,  C09K3/00

CPC classification number: C23F1/26

Abstract: Titanium and refractory metals and their alloys are removed from tools, usually made from steel or carbides, without deleterious effects on the tool, by immersing the coated tool in an acidic solution including fluoride ions, a source of COOH radical such as formic acid, and one or more of the hydroxylated carboxylic acids such as gluconic acid.

Abstract translation: 通过将涂覆的工具浸入包括氟化物离子，诸如甲酸的COOH基团的源的酸性溶液中，将钛和难熔金属及其合金从通常由钢或碳化物制成的工具中除去，而不会对工具产生有害影响，以及 一种或多种羟基化羧酸如葡萄糖酸。