Performance test of linear ball bearings heat treatment standard

Linear ball bearings used in a variety of mechanical equipment, bearing conditions required by the increasingly strict, the bearing performance is diverse. In choosing linear ball bearings, it is generally believed that as a bearing, the difficulty of installation and removal, bearing and the bearing market size, such as space allows, the general decided to bearing structure. In the use of a variety of mechanical design life and a variety of durable, the comparative studies of linear ball bearings limited bearing has to be decided at the same time. In selecting bearings, bearings are often inclined to think that grease life in aging, the fatigue life of oil, abrasion resistance, low noise, also need to fully research. 1) Check the heat treatment before heat treatment equipment, auxiliary equipment, instrument and other eligibility and normal, in all parts of the furnace temperature difference is in the scope of regulation ( ±5℃） ; 2) Should be blown sand or rinse before furnace charging, should be no oil, dirt, dirt, alloy should not be confused; 3) Shape traits are prone to warping of the casting should be put on special chassis or bracket, do not allow to have suspended cantilever part; 4) Check the performance of casting bearing single cast or cast test bar should be attached with furnace with parts processing, to reflect the performance of casting; 5) Throughout the heat preservation period should check, calibration furnace temperature, to prevent the local high temperature or flashing; 6) In a short period of time when the power is not restored, castings in heat preservation should be rapidly quenching oven, wait to return to normal, put in the furnace, heat preservation and heat treatment, 7) In nitrate slot quenching far castings, should immediately flush with hot water after quenching, eliminate residual salt, prevent corrosion; 8) Found after quenching deformation of castings, should immediately be correction; 9) To aging treatment of metal parts, should be zero after quenching. Within 5 h aging treatment; 10) If found performance after heat treatment, can be repeated heat treatment, but not more than 2 times; 11) Should be according to the shape, size, alloy casting structure characteristics for the heat treatment process of heat treatment.