Circular manhole cover

The control of ink scraper in offset printing is a complex process of ink transfer, including ink, plate, and paper. In gravure printing, the ink scraper is a mechanical operation that is relatively simple. 

ST3001

Size: φ200, φ300, φ350, φ400, φ450, φ500, φ600 or as per required drawing
Pressure: over 3.0 Bar With sight glass or not.
Material quality: SUS304, 316L, 321, 304L, 316
Fineness: Inner and outer fineness of mirror Ra≤0.8μm, inner and outer mechanical Polish and electrical Polish Ra≤0.2μm, external surface can be gross polished or sub-gross polished.

Product Description

The control of ink scraper in offset printing is a complex process of ink transfer, including ink, plate, and paper. In gravure printing, the ink scraper is a mechanical operation that is relatively simple,. The ink scraper must have wear resistance to ensure high-quality printing, and it must be suitable for the high-speed needs of modern gravure printing. The ink scraper is a thin sheet used on a printing machine to scrape excess ink off the surface of the drum, which is divided into two types: metallic and non-metallic. The ink scraper is a key factor in removing ink from patternless areas during each printing process.
The standard blade has a completely consistent blade thickness. Within the service life of the scraper blade, its contact area with the drum remains consistent, so the color tone is completely consistent. The polishing treatment of the blade can quickly align the blade with the drum at the beginning of printing, reducing waste.
The shape of the blade with a larger inclined angle design makes the blade wear less, and the reduction of contact area can provide a clear scraping effect. A larger diagonal design can also reduce blade breakage. The degree of inclination varies from 4 ° to 15 °, suitable for short version layered printing.
The coating blade is made of carbon steel substrate and coated with nickel material on the surface. The coating provides excellent corrosion resistance and oxidation resistance. It is extremely suitable for printing with corrosive ink and varnish. During use, the coating can also compensate for minor damage to the scraping edge caused by impurities in the ink, thereby reducing color tone changes and the appearance of stripes. The coating blade is very suitable for coating applications.
The new blade can be applied to gravure printing machines when the blade angle is difficult to adjust. Sharp blade provides elastic tension while maintaining a high contact angle. This design ensures stable blade pressure and maintains the correct contact angle. Reducing printing pressure means extending the lifespan of the drum and reducing the generation of stripes.
With the advancement of science and technology, research on trapezoidal scraper blades for printing has shown that trapezoidal scraper blades are increasingly adopted by printing manufacturers due to their constant contact area with the plate roller from beginning to end, and consistent printing quality. The vast majority of scraper blades currently used in the market are trapezoidal knives.

Keywords:

Circular manhole cover

Size: φ200, φ300, φ350, φ400, φ450, φ500, φ600 or as per required drawing

Type: Square, circular, elliptical

Material quality: SUS304, 316L, 321, 304L, 316

Pressure:0.3 Bar

Fineness: Inner and outer fineness of mirror Ra≤0.8μm, inner and outer mechanical Polish and electrical Polish Ra≤0.2μm, external surface can be gross polished or sub-gross polished.

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