| 摘要 |
<p>A high quality lubricant carrier for lubrication in cold plastic working of iron and steel is provided by a process in which the surfaces of objects to be worked are first treated with a surface conditioning liquid composition that contains dispersed fine particles of at least one of a Jernstedt salt, zinc phosphate, zinc calcium phosphate, and calcium phosphate, and is then treated by a phosphatizing solution that contains calcium cations.</p> |
