The impact of the polishing factors of the chrome surface of the gravure printing roller on the drawing process!
Release Time:
Apr 28,2016
Polishing Factors
1. Polishing Angle
The above is the angle of the electric engraving mesh. It is best to polish along the angle to achieve a certain cross pattern, which helps to resist wire drawing. On the other hand, polishing along the direction of the mesh wall prevents the mesh wall from becoming fuzzy, which positively affects the wear resistance of chromium.
2. Polishing Roughness
2. Polishing Roughness
Lower is not always better. The European high-speed machine standard is Ra0.03-0.038, while the roughness of low-speed machines should be appropriately lower. A certain level of roughness helps the ink clumps to disperse in the relative motion friction between the plate and the scraper, achieving a wire drawing resistance effect. This effect must be coordinated with the copper surface, which should not be too fine. For details, refer to the previous WeChat public account cjzbhc regarding 'The Impact of Printing Plate Roller Grinding Roughness and Pattern Control on Wire Drawing'. It is recommended to use the yellow environmentally friendly super wear-resistant 3000# grinding wheel from Maituo Technology.3000# grinding wheel.
3. Polishing Intensity Due to the edge discharge effect in electroplating, burrs are easily formed at the sharp edges of the mesh wall. Therefore, it is essential to ensure that these burrs are polished away to prevent cutting during the printing process. It is recommended to use the new model DYGP chromium polishing machine produced by DYM, which allows for easy control of the pattern angle and polishing intensity.
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