NISHIOKA MALLEABLE IRON IND.co.,LTD in the Toyota City Yoshiwara-cho is producing the controller, the disk rotor, and the engine parts etc. of the car.
A pattern for product manufacture is chosen depending on materials, form and dimensions. |
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For efficiency and precision during manufacture, mass-produced items make use of metal molds, while small amounts and test units use resin molds. |
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Coking agents and other additives are blended into sand used for casting metal, especially for creating molds. |
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A mixture of iron is melted in the furnace to create high temperature molten metal. |
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The mold is placed inside a frame. It is then packed with sand to make the top and bottom of the sand mold. |
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Cores are made in the same way as the main pattern. |
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Molten metal is poured into the sand molds. After pouring it is allowed to cool for a suitable period. |
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The top and bottom of the sand mold is separated and the product is taken out. |
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The sand clinging to the product surface is removed. Unnecessary parts are shaved off. |
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The form of the product, presence of defects, and accuracy of dimensions are inspected. |
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