Precision ball processing steps have?

Precision ball processing steps have? Precision ball processing steps: pulverizing: due to the nature does not exist naturally produced this compound, silicon nitride silicon nitride powder need preparation by synthetic method. There are usually two methods - — Silicon imine pyrolysis and silicon powder direct nitridation method. 1 silicon imine pyrolysis excellent sintering activity, very suitable for sintering and preparation of high performance silicon nitride. 2 silicon powder direct method of silicon nitride powder direct nitridation method in industrial production process is relatively mature, able to mass production, and the production cost is relatively low. Mixing: no matter use what kind of materials bearing, all needs to add a certain amount of other materials in a as sintering additives, to change the crystal particle shape, make its formation on the material of the mechanical properties have a significant impact on the microstructure, etc. Silicon nitride sintering additives are two main types of metal oxide and rare earth oxides molding molding is an important step in the preparation of silicon nitride balls, is the key to influence the ball after processing. Usually a cold isostatic pressing molding in directly: filling - The balloon from coating - Cold isostatic pressing sintering, casting ball performance is still far less than processing standards, so need to sintering to enhance the strength of the blank. After sintering, the ball blank will be more dense, increasing density and intensity are high, as for ball grinding process. The sintering temperature is an important process parameters affect the sintering performance. Because the ball material hardness, rough machining is twice the ball hardness, so the steel ball of the machining process and abrasive is not suitable for the ball. Finishing is also called grinding, is the back of the ball has a processing step, is also a process with the products. The accuracy requirement of the lapping quality of the ball and is quite high. Inspection of bearing parts production process determines its easier than steel bearing components to generate random surface material defects. The surface defects may be the material itself, can also be produced in the process of grinding. Common has the following several methods: ultrasonic inspection technology, fluorescence detection, and optical microscope. ( Return] A: bearing manufacturer _PP bearing product features have? Next article: bearing manufacturers use classification have?