The printing plate needs to have the performance guarantee

Pad printing steel generally requires the following aspects:

1. Has good wear resistance. The steel plate will be damaged in every contact abrasion with the blade. The blade is made of high carbon steel, which has high hardness and sharpness. It is necessary to scrape the ink on the surface of the steel plate, the surface should be smooth and smooth, and it should have high hardness. . If the surface of the steel plate is scratched, the degree of scratching will be affected. The usual test method is to install the steel plate on the pad printing machine for squeegee 3000 times. Observe the surface with a microscope. The qualified steel plate should have no trace exceeding 5um in depth.

2. Has better processing performance. The substrate steel plate provided by the manufacturer can not generally be used for direct plate making, and it must first be subjected to grinding, grinding and polishing processes so that the surface thereof can achieve the surface roughness of the mirror effect. Therefore it is very important to have good mechanical processing properties.

3. With a fine and uniform structure. The finer the structure of the steel plate, the smoother the surface can be polished. More importantly, after the steel plate is corroded, the quality of the picture and text edge obtained is better, and the reproducibility of the dot is also more excellent, and it is easy to improve the printing quality. The reaction process between steel plate and concentrated HNO3 is also easier to control.

4. Has good corrosion resistance. The corrosion resistance of the steel plate shows that pitting and rust spots do not occur easily in contact with the ink and the solvent. The steel plate is corroded, the pits are filled with ink, the scraping blade does not clean the ink, and the printing quality is affected. Corrosion at the graphic and graphic will destroy the integrity of the graphic and make the steel plate obsolete. The corrosion of the steel plate is mainly related to the chemical composition of the steel.

All types of alloy tool steels include impact-resistant steels. To improve its hardness and wear resistance, heat treatment can be performed. Heat treatment can also uniformly and refine the microstructure.

Source: Weinan Printing Network