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克魯勃WOLFRASYN ULAF 克魯勃WOLFRASYN ULAF 克魯勃WOLFRASYN ULAF Coatings for die casting Release agents such as die coatings are required to ensure a long lifetime of casting tools and moulds. They influence the casting characteristics and flow behaviour of the metal to ensure homogeneous casting without blow holes and with a perfect surface after forming with little or no subsequent finishing.