Increasingly strict linear ball bearings used on the conditions required by the various machinery and equipment, bearings, bearing performance is also becoming more diverse.
Select linear ball bearings, is generally believed that, as a bearing installation and removal of the difficulty of arrangements, bearing size and bearing market, such as space allows, generally determines the bearing structure.
Limited comparative study of the use a variety of mechanical design life and a variety of durable linear ball bearings, bearing size also decided. Select bearings, bearing tend to think that life in aging grease, the grease of the fatigue life, wear-resistant, low noise, and also need to be adequately studied.
1) heat treatment should be checked before the heat treatment equipment, auxiliary equipment, instrumentation is qualified and normal throughout the furnace temperature difference is within the specified range (± 5 ° C);
2) Replacing the blast furnace blowing sand or washing, should be free of oil, dirt, mud, alloy grades should not be confused;
3) Shape Traits prone to warping castings should be placed on the a dedicated chassis or bracket does not agree on a vacant part of the cantilever;
4) Check the bearing the castings performance of single-cast or attached cast test bars with the parts furnace processing, a true reflection of the casting performance;
5) during the insulation should be checked at any time, correcting the furnace temperature throughout to prevent local high temperature or burnt;
6) in a short period of time can not be restored after power, casting in insulation should be quickly released quenching, etc. back to normal, and then installed furnace, warm and heat-treated;
7) in the nitrate bath hardened castings should be quenched immediately rinse with hot water to eliminate residual salts to prevent corrosion;
8) found the castings after quenching deformation should be corrected immediately;
9) Part to the aging treatment should be within 0.5h after quenching to aging treatment;
10) If, after the heat treatment found substandard performance, and may be repeated heat treatment, but the number should not exceed 2 times;
11) should be based on the shape, size, alloy characteristics of the casting structure to develop a heat treatment process for heat treatment.
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