金刚石与磨料磨具工程
金剛石與磨料磨具工程
금강석여마료마구공정
DIAMOND & ABRASIVES ENGINNERING
2014年
4期
31-35
,共5页
金刚石磨盘%钎焊%多孔结构%硬脆材料
金剛石磨盤%釬銲%多孔結構%硬脆材料
금강석마반%천한%다공결구%경취재료
diamond grinding disc%brazing%porous structure%hard and brittle materials
针对引入孔隙结构后,多孔金属结合剂超硬磨具耐用度降低的问题,提出利用超硬磨料钎焊技术改善胎体对金刚石磨料的把持力,以提高工具寿命,并成功研制出一种新型多孔金属结合剂金刚石磨盘。测试分析了新型磨盘的节块性能,并通过磨削花岗岩安溪红635试验,对新型磨盘的磨削效果进行评价。实验结果表明：新型磨盘节块强度在100MPa左右,孔隙率为60%,孔隙在节块内部分布均匀,且金属结合剂与金刚石表面发生了牢固的化学冶金结合；磨削石材的表面粗糙度Ra0.77~1.59μm,磨盘的磨削比达到760。
針對引入孔隙結構後,多孔金屬結閤劑超硬磨具耐用度降低的問題,提齣利用超硬磨料釬銲技術改善胎體對金剛石磨料的把持力,以提高工具壽命,併成功研製齣一種新型多孔金屬結閤劑金剛石磨盤。測試分析瞭新型磨盤的節塊性能,併通過磨削花崗巖安溪紅635試驗,對新型磨盤的磨削效果進行評價。實驗結果錶明：新型磨盤節塊彊度在100MPa左右,孔隙率為60%,孔隙在節塊內部分佈均勻,且金屬結閤劑與金剛石錶麵髮生瞭牢固的化學冶金結閤；磨削石材的錶麵粗糙度Ra0.77~1.59μm,磨盤的磨削比達到760。
침대인입공극결구후,다공금속결합제초경마구내용도강저적문제,제출이용초경마료천한기술개선태체대금강석마료적파지력,이제고공구수명,병성공연제출일충신형다공금속결합제금강석마반。측시분석료신형마반적절괴성능,병통과마삭화강암안계홍635시험,대신형마반적마삭효과진행평개。실험결과표명：신형마반절괴강도재100MPa좌우,공극솔위60%,공극재절괴내부분포균균,차금속결합제여금강석표면발생료뢰고적화학야금결합；마삭석재적표면조조도Ra0.77~1.59μm,마반적마삭비체도760。
To solve the problem of low life produced by introducing porous structure into the porous metal-bonded diamond tool, improving holding force between matrix and diamond by brazing super-abrasive technology is proposed.One new porous metal-bonded diamond grinding disc was developed and the segment performance of the disc was analyzed.Grinding experiments of granite 635 were carried out to evaluate the grinding effect of the new disc.The results show that the strength of segments is about 100 MPa,that the porosity of segments is 60%,and that pores are uniformly distributed in the segments.Firm metallurgy-chemistry reaction exists on the contact surface between diamond and metal bond.Besides,the machined surface of granite 635 has Ravalues from 0.77 μm to 1.59 μm.The grinding ratio of diamond grinding disc is up to 760.
