Analysis of kinematic precision and reliability for steel ball ring groove equal-speed transmission mechanism

The paper presented a new way for the sideway fine feed of cutting piston ring groove: After cutting the groove bottom,the cutting tool make a sideway fine feed of cutting along the groove width to restore the groove width to correct dimension and the cutting tool life being prolonged.

For the intake bypass recirculation system of compressor,the influences of different ring slot structure and position on compressor performance were researched.

the key of seperated layer polymer injection technology is the shape and size of the core, as a savings component, which can reach the scene called for pressure to reduce expenditure as much as possible so that the viscosity loss of the smallest, As to the problem mentioned above, a injection allocation with concentric annulus with ring slots on the inner cylinder was invented.

The cause of inner crack from acid resistant ceramic tile in dry absorbed cycling tank of 200000 ton of sulfuric acid production process from sulfur was analyzed,and treatment was discussed.