本文
No.4（2001）8.Zinc-coated steel sheets during deep drawimg with use of ceramic tool under dry condition
Akio MOTOI, Seiji KATAOKA, Takezo SASAKI, Kokichi KATOH and Naohiro ISHIDA
Increasingly more severe restrictions on lubricants or cleaning agents in metal forming necessitate looking for methods to reduce or eliminate their use. Experiments on deep drawing of zinc-coated steel sheet are carried out with use of ceramic tools under dry conditions. Four kinds of ceramic tools are used. Rust preventive tests are carried out with the use of the salt spray method to assess surface damage of the zinc layer of drawn cups. From the experiments, it is found that ceramic tools show good tribo-characteristics in the deep drawing test of zinc-coated steel sheet under dry conditions. Limiting the drawing ratio with use of ceramic tools (SiC) under dry conditions becomes the same level as using die steel tools under lubricating conditions. Moreovers there is no difference in the effect of anti-corrosion of zinc-coating between dry and wet conditions.
Keywords
Zinc-coated steel, Deep drawing, Ceramic, Tribology, Dry condition
