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For cemented carbide cutting tools, the compact is heated at __________

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For cemented carbide cutting tools, the compact is heated at __________

(a) 650 F

(b) 1200 F

(c) 1989 F

(d) 2750 F

I have been asked this question in exam.

Enquiry is from Sintering and Compacting, Pig Iron and its Manufacture topic in chapter Testing of Materials, Foundry & Powder Metallurgy of Engineering Material & Metallurgy

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The correct answer is (d) 2750 F

The best I can explain: In the production of cemented carbide cutting tools, a mixture of carbides of tungsten, tantalum, and titanium with cobalt as a binder is compacted and pre-sintered. These can be cut, machined, and ground into the final shape. The compact is then subjected to a high-temperature sintering operation at 2750 F.

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