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The method of detachable mounting plate cutters with one or two superhard outer layers and carbide substrate
The method of detachable mounting plate cutters with one or two superhard outer layers and carbide substrate
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机译:具有一或两个超硬外层和硬质合金基片的可拆卸安装板刀的方法
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摘要
FIELD: soil or rock drilling; mining.SUBSTANCE: invention relates to mining industry, namely to method of fixation of cutting plates with super-hard layers and hard-alloy substrate for drilling with ring crowns. Method of detachable attachment of cutting plates with one or two super-hard outer layers and hard-alloy substrate, installed in through rectangular slots according to the scheme of well-and core-forming cutters, and with shank of welded steel welded to groove walls, with possibility of providing required release of lateral calibrating and cutting edges, includes wedge clamp of plate-cutters and subsequent cutting on weld seam, narrowing liner on planes of adjoining plate-cutters to walls of groove. Shank is separated from the plate-cutter, prepared for soldering, then it is welded to the bit body and only then a cutting plate is attached to the welded shank by soldering.EFFECT: technical result consists in improvement of reliability of plates-cutters by preventing their overheating when welding steel shanks.4 cl, 8 dwg
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