Slalom unqualified "Twin Peaks" Wheel serious quality problems

Recently, AQSIQ informed Wheel of product quality supervision and inspectioresults, Li Jizhou City Star Shalun produce fiber-reinforced resin bonded abrasive cutting wheel, turning the Precision bearing failed. The main reason is the failure of 10 test fiber-reinforced resin cutting discs grinding wheel speed requirements before such tests appear in full swing broken, is a serious quality problems.
The Hebei, Liaoning, Jiangsu, Zhejiang, Anhui, Fujian, Jiangxi, Shandong, Henan, Hubei, Guangdong and other 11 provinces 197 production of 200 kinds of products for the supervision wheel. According to mandatory national standard GB2494-2003 "Standard Abrasives safety rules," recommended national standard GB/T2485-2008 "abrasive technology" as well as the industry standard JB/T6353-2006 "abrasive resins and rubber sheets wheel ", JB/T3715-2006" abrasive grinding wheels with cymbals ", JB4175-2006" fiber-reinforced resin bearing manufacturer abrasive cutting wheel "and other provisions of the standard, the appearance of the grinding wheel product defects, dimensions, geometric tolerance, hardness, static unbalance, rotation test, signs and other seven projects have been tested and found 30 kinds of product failure.
It is understood that substandard products, there are 17 kinds of grinding wheels with cymbals, fiber-reinforced resin cutting wheel, grinding wheel and resin ceramic flat flat grinding wheel diameter substandard products, wheel diameter is too large or too small will result in the course of grinding wheel rupture. 4 kinds of ceramic flat-shaped grinding wheel hardness failed. The hardness of the cutting wheel, grinding plays a key role in the efficiency of the grinding wheel hardness soft and hard grade, to the material of the workpiece and being adapted to the hardness of soft efficiency is not high; hardness of the workpiece may cause burns hard