HARD MATERIAL AND METHOD OF MAKING THE SAME FROM AQUEOUS HARD MATERIAL MILLING SLURRY
PROBLEM TO BE SOLVED: To provide a method of making a cemented (cobalt) tungsten carbide from an aqueous hard material milling slurry.SOLUTION: An aqueous emulsion for use in aqueous milling of hard material powder components in an aqueous slurry is provided. The aqueous emulsion includes an oxidati...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a method of making a cemented (cobalt) tungsten carbide from an aqueous hard material milling slurry.SOLUTION: An aqueous emulsion for use in aqueous milling of hard material powder components in an aqueous slurry is provided. The aqueous emulsion includes an oxidation inhibitor in an amount of about 0.3 to about 1.2 wt.% of the hard material powder components in the aqueous slurry. The aqueous emulsion also includes a paraffin wax in an amount of about 0.25 to about 0.75 wt.% of the hard material powder components in the aqueous slurry for vacuum dried powder and in an amount of up to 2.75 weight percent of the hard material powder components in the aqueous slurry for spray dried powder. The aqueous emulsion also includes myristic acid in an amount of about 0.10 to about 0.50 wt.% of the hard material powder components in the aqueous slurry. The balance of the aqueous emulsion is water.
【課題】水性硬質材料粉砕スラリーからの超硬(コバルト)炭化タングステンの製造方法を提供する。【解決手段】水性スラリー中の硬質材料粉末成分を水性粉砕する際に用いられる水性エマルション。この水性エマルションは、水性スラリー中の硬質材料粉末成分の約0.3重量%〜約1.2重量%の量の酸化防止剤を含む。この水性エマルションはまた、真空乾燥された粉末の場合には水性スラリー中の硬質材料粉末成分の約0.25重量%〜約0.75重量%の量のパラフィンワックスを含み、また、噴霧乾燥された粉末の場合には水性スラリー中の硬質材料粉末成分の約2.75重量%以下の量のパラフィンワックスを含む。この水性エマルションは更に、水性スラリー中の硬質材料粉末成分の約0.10重量%〜約0.50重量%の量のミリスチン酸をも含む。この水性エマルションの残部は、水である。【選択図】なし |
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