块规通过精研磨;可使块规的表面光洁度达到13 。不过在加工过程中,当平板内砂子的锐角磨钝,润滑剂很少时,块规与平板就发生于摩擦,块规表面色泽就呈现不均匀的黄色,这就所谓“发黄”。虽然发黄块规的光洁度与耐磨性比一般块规强,但由于影响外现,也作为废品。后经过我车间工人同 Block through the fine grinding; block surface roughness can reach 13. However, during processing, when the acute angle of sand in the plate is blunted and the lubricant is seldom, the block gauge and the plate are rubbed against each other, and the surface color of the block gauge presents an uneven yellow color. This is called “yellowing”. Although the yellow block gauge finish and wear resistance than the general block rules, but because of the impact of external appearance, but also as a waste. After I workshop workers with