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Diamond-coated doctor blade

A diamond particle, scraper technology, applied in scraper, metal material coating process, coating and other directions, can solve the problem of incomplete service life and other problems, and achieve the advantages of improving wear resistance, long service life and reducing wear. Effect

Inactive Publication Date: 2011-11-23
DAETWYLER SWISSTEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the service life is still not entirely satisfactory
It has also been shown that uncontrolled striae formation (Streifenbildung), which is likewise undesirable, can result, especially during the running-in phase, when using this type of doctor blade

Method used

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  • Diamond-coated doctor blade
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] exist figure 1 A blade doctor blade 100 according to the invention is shown in cross-section. The blade scraper 100 comprises a base body 111 made of steel, the base body 111 in figure 1On the left side there is a rear region 112 with a substantially rectangular cross-section. The blade thickness (measured from the upper side 112.1 to the lower side 112.2 of the region of the rear) is about 0.2 mm. The length of the base body 111 or the blade blade 100 measured perpendicular to the plane of the drawing is, for example, 1000 mm.

[0056] exist figure 1 On the right side in , the base body 111 narrows in steps starting from the top side 112 . 1 of the rear region 112 for forming the working edge region 113 or working edge. The upper side 113.1 of the working edge 113 is located on a plane below the plane of the upper side 112.1 of the region 112 of the rear portion, but the upper side 113.1 of the working edge 113 is configured to be substantially parallel or planpara...

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Abstract

A doctor blade (100, 200), particularly for wiping printing ink off a surface of a printing plate and / or for use as a paper doctor knife, has a flat and elongated main body (111, 211) including a working edge region (113, 213) configured in a longitudinal direction, wherein at least the working edge region (113, 213) is covered with a first coating (120, 220) on the basis of a nickel-phosphorus alloy. The doctor blade (100, 200) is characterized in that monocrystalline and / or polycrystalline diamond particles (120.1, 220.1) are dispersed in the first coating (120, 220), wherein a particle sizes of the diamond particles (120.1, 220.1) measure at least 5 nm and less than 50 nm.

Description

technical field [0001] The invention relates to a scraper (Rakel) especially for scraping (Abrakeln) printing ink from the surface of a printing plate (Druckform) and / or as a scraper (Papierstreichmesser), which includes a ( Flat (flach) and elongated of the working edge area (Arbeitskantenbereich) constructed in the longitudinal) direction The base body, wherein at least the working edge region is covered with a first coating based on a nickel-phosphorous alloy. Furthermore, the invention relates to a method for producing a doctor blade and the use of the doctor blade. Background technique [0002] In the printing industry, doctor blades are used in particular to scrape off excess printing ink from the surface of printing cylinders or printing rollers. Especially in gravure and flexographic printing, the quality of the doctor blade has a decisive influence on the printing result. For example, unevenness or inhomogeneity of the working edge of the doctor blade in contact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F9/10
CPCC23C18/32C23C18/1662C23C18/1692B41F9/1072D21G3/005C23C18/1651C23C18/1601
Inventor H·J·布鲁德曼S·施蒂尔茨A·赫格利
Owner DAETWYLER SWISSTEC