Manufacturing And Production Technology
In a gating system, the ratio 1: 2: 4 represents

Sprue base area: runner area: ingate area
Pouring basin area: ingate area: runner area
Sprue base area: ingate area: casting area
Runner area: ingate area: casting area

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Manufacturing And Production Technology
During normalizing process of steel, the specimen is heated

Between the upper and lower critical temperature and cooled in furnace.
Above the upper critical temperature and cooled in still air.
Above the upper critical temperature and cooled in furnace.
Between the upper and lower critical temperature and cooled in still air.

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