A comparative study on the performances of synthetic diamond made by belt press & cubic press

There are mainly two kinds of equipment to produce synthetic diamond,namely belt press & cubic press.It has been customary in the industry to regard synthetic diamond produced by cubic press is inferior to that made by belt press.With the on-going improvement in technology,know-how & accumulated experiences, perhaps it’ s time for us to review the qualities & performances of synthetic diamond made by the cubic press more objectively.Studies were carried out on the performances of the two kinds of diamond by choosing from top brands & top qualities,with coarser mesh sizes 20/30 & 30/40.Comparisons were made on parameters, such as TI,TTI,PPC,bulk density,compact,roughness and arealight.And the diamonds chosen were used to produce the relevant diamond core drill bits and saw blades,their respective cutting performances such as cutting efficiency,segments consumption were measured and reported in this paper.The report demonstrates that producing the high quality diamond does not depend on the type of presses(Belt or Cubic) but rather on the know-how,technology and what it is made.

我国文艺表演团体行业竞争力要素比较研究

我国文艺表演团体行业发展进入转型升级战略机遇期,提高行业竞争力是大势所趋。借鉴钻石模型理论对比分析文艺表演团体行业竞争力发展要素,可以发现优势与问题并存:一方面,发展面临重大机遇,文化资源、相关支持性产业以及市场消费需求都有利于竞争力提升;另一方面,文化管理体制改革尚不彻底,文艺表演团体发展战略还处于新旧交替过程中,人力、资金资源等关键要素问题突出。基于此,必须抓住机遇,持续深化管理体制改革,推动新型发展战略建设,促进产业链发展并突出优势要素引领作用。