METHOD OF MANUFACTURING PRECISION CAST PARTS FOR VEHICLE EXHAUST SYSTEMS
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United States of America Patent
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Mar 2, 2017
app pub date -
Nov 19, 2015
filing date -
Aug 31, 2015
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Abstract
A method of manufacturing precision cast parts for vehicle exhaust systems includes fabricating a model of a product to be manufactured using a substance selected from the group consisting of a wax and a plastic, forming a first coating layer on a surface of the model using a first slurry, forming a second coating layer on the surface of the model coated with the first coating layer using a second slurry, drying the first and second coating layers to form a mold and heating the mold to remove the model, pre-heating the mold, placing the mold in a ceramic box with a top portion open, and filling an inner part of the ceramic box with ceramic balls, and producing a product by injecting a molten metal into the mold to cast the product.
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