高温生型砂の模型へのしみつきについて

抄録

  Sticker caused by hot sand was taken note of and discussed in this paper. Experiments were performed by squeezing hot mulled sand to study the effects of various factors and conditions on the occurrence of sticker. Methods of its prevention were also studied.
  It was found that sticker occurs due to elevation of temperature of the sand especially when the moisture content and the squeezing pressure are low. It was confirmed that sticker is caused by condensation of moisture on the pattern surface. Pattern heating and use of some parting agents proved effective for the prevention of sticker. Painted or varnished wooden patterns should not be used on hot sand, because heavy sticker occurs under all conditions.