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                              热芯盒模具

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                              热芯盒模具

                               

                               

                               

                               

                               

                               

                               

                               

                               

                               

                               

                               


                              覆膜砂制芯是将热塑性固态酚醛树脂为粘结剂,乌洛托品为固化剂的芯砂,吹入加热的芯盒中保持   的结壳时间,待形成薄壳后,经摇摆多余的芯砂倾倒贮砂斗中,而形成中空的薄壳砂芯。所用的芯砂叫做覆膜砂,因此,把这种制芯方法称为覆膜砂制芯。
                               

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