Optimizing the ingredients of super shortening pre-coat material

摘要

For the purpose (If optimizing the ingredients of a new pre-coating material, a study was made with the reaction ratio method of the quality engineering. As the result, even under the severe noise condition such as inflow of oil and no stirring, the total chemical reaction (= phosphophilite+hopeite) advanced well with the lower side chemical reaction (= hopeite). And the ingredients of the new pre-coating material were decided.