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公开(公告)号：EP3250788A1
公开(公告)日：2017-12-06
申请号：EP16701457.0
申请日：2016-01-22
申请人： Betek GmbH & Co. KG
IPC分类号： E21C35/183 , E01C23/08 , E21B10/46
CPC分类号： E21C35/183 , E21B10/46 , E21C35/19 , E21C35/197 , E21C2035/1806 , E21C2035/1813
摘要： The invention relates to a pick, in particular a round-shank pick, comprising a pick head and a pick shank, wherein the pick head consists of at least a base part and a cutting element, which is connected to the base part and is composed of a hard material, in particular hard metal, wherein the base part has a wear-resistant layer on the outer surface thereof at the connection to the cutting element, which wear-resistant layer covers at least one segment of the outer surface of the base part facing the cutting element and wherein an end face of the wear-resistant layer facing the cutting element is covered by the cutting element. According to the invention, the base part has an axially oriented cut-out for receiving a fastening segment of the cutting element, the base part has a counter surface facing the cutting element and extending around the cut-out, and the counter surface and the end face of the wear-resistant layer form a continuous flat surface. The invention further relates to two methods for producing such a pick. The pick formed in such a way has low abrasive wear.
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公开(公告)号：EP2855068A1
公开(公告)日：2015-04-08
申请号：EP13722757.5
申请日：2013-05-15
申请人： Betek GmbH & Co. KG
CPC分类号： B23K35/0288 , B23K9/207
摘要： The invention relates to a protection element against wear, in particular a knob bolt, comprising a head part (10) from a hard material and a connecting part (20). In order to achieve a protection element against wear that has a material-optimized design, it is provided that the head part (10) is designed as an electrode in an electrically conductive manner or comprises an electrode.
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公开(公告)号：EP3250788B1
公开(公告)日：2019-10-16
申请号：EP16701457.0
申请日：2016-01-22
申请人： Betek GmbH & Co. KG
IPC分类号： E21C35/183 , E01C23/08 , E21B10/46
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