Tungsten Carbide Broach Broaching of Surface Defects

Tungsten carbide broach in broaching process, factors broaching surface defects are mainly crowded highlights, scales thorns, scratches, burnishing, circular ripples and bite knives. Factors that cause surface defects when tungsten carbide broach broaching have slight edge passivation or chipping, edge sticky crumbs, cutter blade with too much or uneven width, rake angle is too large or too small, broaching produced during vibration. If the surface roughness qualified, but when you scratch defects generated, you can check if there are bumps cutter blade gap; if there has not been cleaned chips attached to the cutter; Broach tolerance after repeated sharpening shavings whether or not caused by the shape of the groove smooth stepped to cause the chip curling is not smooth and squeeze bad. Teeth and scratch the machined surface and the like. In addition, if the pre-processing of oxide on the surface of the hole may also cause localized bumps and scratches tooth defects.