The grinding path is caused by the uneven grinding of the cutting plate in the grinding process, mainly due to the improper rotation speed of the plate, the rotation speed of the customized metal cutting disc, the walking speed of the grinding head and the improper pressure matching; Grinding road rectification measures: the grinding machine grinding head pressure is generally controlled at 60-80kg (requires professional pressure equipment testing), the pressure is too large, the grinding uniformity is worse; b, the plate roller speed and the cutting disk speed must have a tachometer, the general cutting disk speed is 2-3 times the plate roller speed is appropriate (3 times the diameter of the diameter, 2 times the diameter of the thick); c. Prevent the platen roller from vibrating during the grinding process, and install anti-vibration measures before grinding; d, the walking speed of the grinding head should not be too fast, generally 8-9 grinding lines are distributed within 1cm range, that is to say, every 1cm of the grinding head, the platen roller rotates 8-9 times; e, the grinding head travel screw, and the wire sleeve should be properly matched to avoid the walking of the grinding head into a stepping mode, which increases the uniformity of grinding; f, the grinding machine head, and the vertical angle are generally 5-10 degrees; g. Replace the cutting disc with a relatively soft texture to improve the uniformity of grinding; Grinding is recommended to use the pulsing body technology environmental protection yellow 3000# cutting disc, features: a tasteless, formaldehyde free, harmless to employees; b, super wear-resistant, up to 2 times more than ordinary cutting discs; c, the process is stable, no scratches. d, anti-dry, the placement time is too long, the ordinary cutting disc is placed for a long time and the water is easy to dry.