Studies have found that due to the high grinding temperature, the grinding debris easily reacts with elements such as oxygen and nitrogen in the air to form a hard layer and a brittle layer, thereby accelerating the wear of the grinding wheel.
Because titanium alloy has the characteristics of high chemical activity, high viscosity and good toughness, coupled with high temperature and high pressure in the grinding zone, adhesion between abrasive particles and metal surface due to affinity occurs, which makes the grinding wheel wear faster and affects the surface quality and dimensional accuracy are difficult to guarantee.
Generally, the grinding force per unit width is about 2-3 times that of ordinary carbon steel, and the radial force is greater than the tangential force.
Due to the high grinding temperature, greater thermal stress is generated on the ground surface, which not only causes grinding burns but also causes grinding micro-cracks. These micro-cracks are hairline-like, and their direction is generally perpendicular to the grinding direction, and the grinding surface is yellow-brown spots. Due to the influence of grinding heat, residual tensile stress is generated on the surface of the workpiece, which reduces the fatigue strength of the parts and affects the service life of the parts.
Because the grinding wheel is easy to passivate and jam, the grinding ratio is very low. On the premise of ensuring the quality of the workpiece, the productivity can only be reduced.
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