The method of controlling the dimensional change when sinterring the iron basic powder mixed union

摘要

As for this invention, the stage which adds to the hard phase material and the mixed union which can obtain the other alloy element stage and mix with 1st powder A and 2nd powder B at the ratio which causes the dimensional change of desire stage and the graphite and the lubricant which prepare the 2nd powder B which consists of stage and the iron basic powder and is alloyed extra the iron - copper based powder which prepare the 1st powder A which consists of the copper which it spreads is connected to the copper, or the iron basic powder of the iron basic powder and copper independent form, depending upon when and, the mixed union which is obtained stage and the formation which formIt regards the method of including with the stage which sinters the body, controlling dimensional change in specified value.