发明名称 |
IMPREGNATED DIAMOND CROWN BIT |
摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to production of rock crushing diamond tools, that is, impregnated diamond crown bits used in drilling with recovery of core. Proposed crown bit comprises circular body, diamond-bearing working layer separated by flushing grooves to segments. Said segments are composed by parallel surfaces making the working surface inclined to crown bit axis and furnished with wear-resistant elements arranged it its inner and outer sides. Said inclined surfaces cross the segment working surface to make thereon a ring site of initial contact of crown bit with work face of diametral width making 15-35% of the segment maximum width. Note here that said inclined surfaces and said ring site form the angle of 7-20 degrees. Besides, wear-resistance elements are shaped to rectangle and have their long side arranged in circular surface of the segment.EFFECT: shorter conformability, longer life.4 dwg |
申请公布号 |
RU2513049(C1) |
申请公布日期 |
2014.04.20 |
申请号 |
RU20120148108 |
申请日期 |
2012.11.13 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "NAUCHNO-ISSLEDOVATEL'SKIJ INSTITUT PRIRODNYKH, SINTETICHESKIKH ALMAZOV I INSTRUMENTA"-OAO "VNIIALMAZ";OTKRYTOE AKTSIONERNOE OBSHCHESTVO "ZAVOD BUROVOGOOBORUDOVANIJA" |
发明人 |
ZHURAVLEV VLADIMIR VASIL'EVICH;DUDAKOV VALERIJ BORISOVICH;BOJTSOV ALEKSEJ GEORGIEVICH;KACHKO VLADIMIR VLADIMIROVICH;PLESHAKOV ANDREJ SERGEEVICH;MEDVEDEV ALEKSANDR KONSTANTINOVICH;LACHINJAN LEONID ARTEM'EVICH;ZELENIN ALEKSANDR PAVLOVICH |
分类号 |
E21B10/48 |
主分类号 |
E21B10/48 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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