How to distinguish the quality of composite bearing
Identify the quality of the compound bearings, we usually from the following aspects:
1, whether the packaging is clear
Under normal circumstances, the regular manufacturers of the brand has its own design and design of external packaging design, and arrange the production conditions of the factory to produce production, therefore, the product packaging from the line to the color block should be very clear, unambiguous.
2, steel printing is clear
Each composite bearing products will be printed on the compound bearing the body of its brand name, label and so on. Although the font is very small, but the regular manufacturers of products produced by the use of stamp printing technology, and before the heat treatment before the pressure word, so the font is small, but concave deep, very clear. And usually, counterfeit products, the font is not only blurred, because the printing technology is rough, the font floating on the surface, and some even easily can be wiped by hand or hand traces of serious.
3, whether there is a noise
Left hand holding the composite bearing body sets, right hand tossing the jacket to rotate, listen to the composite bearing operation process whether there is a noise. As most of the counterfeit products production conditions behind, completely hand-workshop operation, in the production process composite bearing will inevitably be mixed with dust, sand, a class of impurities, so when the composite bearing rotation will appear when the noise or run is not smooth The phenomenon. This is to determine whether the product from the strict production standards, and the use of machine operation of the regular manufacturers of the key brand products.
4, whether the surface of turbid oil traces
Whether there is a turbid oil on the surface This requires us to buy imported composite bearing should pay special attention. As the current domestic anti-rust technology and foreign advanced manufacturing countries there is a certain gap, so the composite bearing body for rust treatment is easy to leave a thick oil traces, hand contact feel thick sticky, and Foreign imports of composite bearing almost do not see any trace of anti-rust oil. According to industry insiders, especially careful people can be imported in the composite bearing to smell a special taste, which is the taste of anti-rust oil.
5, chamfer is uniform
The so-called composite bearing chamfer, that is, the intersection of the horizontal and vertical, counterfeit composite bearing products due to the limitations of production technology, in these corner of the corner of the disposal of unsatisfactory, which we can easily identify
Further need to impact the situation, as a composite bearing materials using chrome steel, chrome molybdenum steel, nickel chrome molybdenum steel, to take carburizing quenching, so that steel from the appearance to the appropriate depth of a softening layer. With appropriate softening depth, fine organization, suitable for the appearance of hardness and hardness of the carburizing composite bearing, composite bearing than the use of composite bearing with excellent impact resistance, the individual carburizing composite bearing steel chemical composition The In the case of
Rolling composite bearing of the rings and rolling body, while repeating the high contact pressure, one side with a sliding contact with the sliding. Maintainer, one side and the rings and rolling body on both sides, or one of the sliding contact, one side of the tension and contraction. Therefore, the composite bearing rings, rolling and maintenance of the information, performance, important requests are as follows. Rings, rolling information requested by the performance: rolling fatigue strength of high hardness and high wear resistance
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