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公开(公告)号：WO2016151025A1
公开(公告)日：2016-09-29
申请号：PCT/EP2016/056403
申请日：2016-03-23
Applicant: SANDVIK INTELLECTUAL PROPERTY AB
Inventor： NORDGREN, Anders , FROM, Anna , NORGREN, Susanne
CPC classification number: C22C29/067 , B22F2005/001 , C22C29/08 , E21B10/56
Abstract: A rock drill button, comprising a body made of sintered cemented carbide that comprises hard constituents of tungsten carbide (WC) in a binder phase comprising Co, wherein the cemented carbide comprises 4-12 mass% Co and balance WC and unavoidable impurities. The rock drill button is characterized in that said cemented carbide also comprises Cr in such an amount that the Cr/Co ratio is within the range of 0.043-0.19, and that the WC grain size mean value is above 1.75 µm.
Abstract translation: 一种凿钻按钮，包括由包含Co的粘结相中的碳化钨（WC）的硬质成分的烧结硬质合金制成的主体，其中所述硬质合金包括4-12质量％的Co和余量WC和不可避免的杂质。 凿岩按钮的特征在于，所述硬质合金还包括Cr / Co比在0.043-0.19范围内的Cr，并且WC晶粒尺寸平均值大于1.75μm。
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公开(公告)号：EP3274482A1
公开(公告)日：2018-01-31
申请号：EP16713359.4
申请日：2016-03-23
Applicant: Sandvik Intellectual Property AB
Inventor： NORDGREN, Anders , EKMARKER, Anna , NORGREN, Susanne
Abstract: A rock drill button having a body of sintered cemented carbide that has hard constituents of tungsten carbide (WC) in a binder phase of Co, wherein the cemented carbide has 4-12 mass % Co and balance WC and unavoidable impurities. The cemented carbide also has Cr in such an amount that the Cr/Co ratio is within the range of 0.043-0.19, and that the WC grain size mean value is above 1.75 μm.
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