| 摘要 |
The investment casting method uses the lost wax method and involves using a model to form a wax piece in the desired shape such as the shape of the snap element or the shape of two hinge halves, making a tree out of a multitude of the wax pieces, adding slurry and heating to create hard material having spaces shaped like the wax parts and then pouring molten casting material into the spaces in a vacuum environment.
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