CBN abrasive is mainly used for steel parts, such as high speed steel, die steel, 45 steel, etc., can be made into electroplating CBN, resin CBN, sintered CBN. Can be made into grinding wheel, cutting pieces, grinding head. Abrasive sharp, high temperature resistance, good thermal stability, wear resistance. The hardness of CBN is higher than that of ordinary abrasives and the ability to maintain shape is one of the main characteristics of high performance abrasives. CBN is very resistant to pressure. CBN has good thermal conductivity and can achieve cold cutting during grinding.
strong wear resistance, long life
The grinding ratio of CBN wheel can reach 3500-5500, which is 100 times higher than that of ordinary corundum wheel and 3-5 times higher than that of diamond wheel.
environmental protection, no pollution, energy saving and consumption reduction
No too much powder dust.
High work efficiency and good comprehensive economic benefits
The grinding is sharp, the grinding force is small, the dressing cycle of CBN wheel is long, the dressing amount is less, and the replacement time is long. Long service cycle, high grinding ratio, can obtain better economy, good shape retention in use, do not need to change and trim grinding wheel often, save working hours, improve working conditions, is conducive to machining operation.
Cubic boron nitride is not suitable for grinding hard metals and non-metallic materials. At high grinding temperature, CBN will react with alkaline aqueous solution. CBN grinding wheel will decompose in alkaline solution at 300℃, and can decompose in trace amount in boiling water, which will destroy the crystal shape of grinding grains. Therefore, oily coolant should be used instead of water-based coolant during grinding.
Cbn Cutting Discs,Flap Disc,Grinding Disc,Cbn Cutting Blade Henan Kemei Abrasives Co.,LTD , https://www.grindingwheelsmanufacturer.com
On May 30, Zhongzhu Holdings issued a clarification announcement stating that the controlling shareholder and actual controller of the company promised that within the next three months, there will be no major assets reorganization, issue of shares, or asset injection. However, the clarification of Zhongzhu Holdings did not play its due role. Zhongzhu Holdings’ stock price still keeps rising. Later, more detailed and targeted rumors were distributed. According to rumors, the biggest highlight of China Pearl Holdings is the possible injection of mineral resources. Zhuhai Xihai Mining Investment Co., Ltd., the actual controller of Zhongzhu Holding, is owned by Xu Delai. Xihai Mining registered in March 1991 with a registered capital of 230 million yuan. In 2010, Xihai Mining had total assets of RMB 1.6 billion. The company mainly invested in the mining of copper, tungsten and molybdenum mineral resources. At present, Xihai Mining has 8,200,900 tons of copper ore, 450,099,000 tons of tungsten ore, 3.8 million tons of molybdenum ore, 4,300,900 tons of silver ores, 3.095 million tons of thorium ores, and 2.8 million tons of rare earth ores in Indonesia, and a small amount of gold, platinum and lithium. Mineral resources.
However, after consulting the data, the reporter found that the actual controller of Zhongzhu Holdings did not have mining mining operation experience and its mining assets were not selected. The Xihai Mining, which was introduced by the rumor, involved only the sale of mineral products and did not participate in the field of mining. According to Guangdong Province's industrial and commercial registration information, the information on the Xihai Group and Xihai Mining in the Zhongzhu Holdings Acquisition Report in 2009 is completely consistent with the industrial and commercial registration data of the two parties. The scope of experience permitted by the authorities does not include mineral mining, smelting and other projects. According to the above mentioned rumors about the detailed mineral resources of Xihai Mining, the reporter could not be confirmed from the listed company.
Recently, the Zhongzhu Holdings announced that it intends to enter the minerals industry. Under the current situation of the real estate and pharmaceutical industries, the company plans to increase its business scope and conduct investment in mineral resources and mining. As the scope of operations involves the selection of gold and rare earth, Zhongzhu Holdings has been dubbed the “two gold + rare earth†hot mineral concept for a time. Therefore, there are market rumors that "the expansion of business scope is for the company's actual controller will be its subsidiary Zhuhai Xihai Mining Co., Ltd. into the listed company." Affected by this, the stock's stock price soared 47% in the past month.