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US5277241A Lost modeling-compound casting pattern and method of preparing it 失效
迷失造型 - 复合铸造模式及其制备方法

Lost modeling-compound casting pattern and method of preparing it
摘要:
The shape-dictating surfaces of the pattern are constituted by a thin self-supporting shell (4 & 5) of photocured polymer. The shell is produced by a laser controlled by a computer with reference to a design drawing. The inside of the shell is packed full of low melting-point modeling compound. The areas (6 & 7) of the pattern that do not dictate shape are demarcated by the low melting-point modeling compound.
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