Carbide end mills are milling cutters made of solid carbide, which are used in CNC machining centers and CNC engraving machines. Carbide milling cutters are mainly divided into: solid carbide milling cutters, solid carbide straight shank groove milling cutters, solid carbide saw blade milling cutters, solid carbide auger milling cutters, solid carbide machine reamer milling cutters, solid end mills, solid ball end mills, solid milling cutters. Uses: Carbide milling cutters are generally used in CNC machining centers and cnc engraving machines. It can also be installed on an ordinary milling machine to process some harder and less complex heat-treated materials
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Rotary vane vacuum pump fault diagnosis and solutions (a)
Rotary vane vacuum pump in use encountered some problems how to solve, what is the solution? The following points for your reference (1) pump does not turn. Unidentified can not open the pump, so as not to aggravate the fault. Can be used to move hands and can not move. â‘ pump can move without turning. The reason can be coupling failure; belt slippage; motor wiring is wrong; motor damage; no power and so on. â‘¡ can not panic or plate up very heavy, the reason can be because the starting pump temperature is too low, the pump oil viscosity is too high; design and manufacture of pump stop too much oil. Too much oil caused by the pump back to the oil too much (too much fuel, or water vapor condensation in the pump, or condensate in the exhaust pipe back to the pump); foreign matter in the pump (intake manifold welding (Copper sleeve, rotor, wall, pump cover, stator, bearings). (2) the pump temperature is too high. The fingers Low-grade exhaust valve measured near the maximum oil temperature exceeds the manual value.As the pump temperature will cause a substantial decline in the viscosity of the pump oil, and the saturated vapor pressure of the pump oil to increase the maximum pressure of the pump and pumping The gas efficiency is reduced; the rubber parts are easily aged; the thermal expansion reduces the running clearance, especially the thickness direction of certain non-metallic rotary blades and the clearance of the copper sleeve inner hole, affecting the reliability of pump operation. The ambient temperature is too high, the intake air temperature is too high, the intake cooling device fails, the pump long-term continuous operation inlet pressure is too high; water cooling pump cooling water is insufficient, circulating water design is not good; temperature control water regulating valve failure, etc. (3) Oil leakage can occur in the shaft seal, fuel tank and Parts of the sealing surface, the drain plug, oil standard, oil hole bulkhead, stator parts and bearing through-hole connections Department, the gas valve (such as 2X-8) and other parts.Any aging by the seal, improper installation, , The surface is not smooth, there are impurities, rough and loose castings, etc. If you stop the pump back to the oil, the oil will enter the gas town valve, the gas valve may not leak gas. Homemade rubber mat, be sure to use oil rubber, According to the original design shape, the sealing surface is too large when the pressure is not tight will leak. (4) Water leakage can occur in the water pipe joints, water jacket boring cover plane, drain tap, drain valve, etc., Defects, cracking, may also lead to water leakage. Zhejiang vacuum pump plant related articles to read: Rotary vane vacuum pump fault diagnosis and solutions (B) of the nine classification methods of vacuum pumps Experts Weapon: How to maintain the vacuum pump Roots vacuum pump has eight characteristics Vacuum pump industry standards (a) of the vacuum pump industry standards (b) of the cause of the corrosion of the vacuum pump and the solution Vacuum pump selection Vacuum equipment maintenance and repair All rights reserved: Rotary vane vacuum pump Fault diagnosis and solutions must indicate the author and the original source vacuum pump factory in Zhejiang as a link when (a) the article.