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DIE FOR FORMING CEMENTED CARBIDE POWDER AND PRESS- FORMATION METHOD OF CEMENTED CARBIDE POWDER USING THIS DIE
DIE FOR FORMING CEMENTED CARBIDE POWDER AND PRESS- FORMATION METHOD OF CEMENTED CARBIDE POWDER USING THIS DIE
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机译:用于形成硬质合金粉末的模具以及使用该模具的硬质合金粉末的压制成型方法
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摘要
PROBLEM TO BE SOLVED: To provide a die for forming cemented carbide powder with which the service life of the die is extended through stable press-formation and a green compact having the same degree is obtd. even without using a die set for obtaining floating force and the improvement of the yield and the reduction of costs of the die and the die set can be attained and to provide a press forming method of the cemented carbide powder using this die. ;SOLUTION: In an upper and lower one stage system die set for compacting cemented carbide powder 2 filled in a cavity of a die 3 into a green compact providing at least one of deep counterbore hole formed between facing surfaces with a first punch 1 and a second punch 4 faced to the first punch, either one of the first punch 1 or the second punch 2 is provided with a first fixed punch 4 for forming one of the faced surfaces and a second fixed punch 5 projected in the compacting direction from the first fixed punch 4 and disposed at the center part of the compacting surface of the first fixed punch 4 so as to form the deep counterbore hole and the green compact having the angle in the opening part of the deep counterbore hole formed in the green compact can be press-formed.;COPYRIGHT: (C)2000,JPO
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