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Long-life wear-resistant corrosion-resistant nano coating for extruder screw

A nano-coating, long-life technology, applied in the field of extruder equipment, can solve the problems of long procurement cycle, low life of domestic parts, and reduced extrusion rate, and achieve high hardness, chemical stability, and high wear resistance. , high density effect

Pending Publication Date: 2022-02-11
上海英佛曼纳米科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During on-site use, the screw and barrel are used in pairs, and it is a great waste for the barrel to be discarded at the same time. The screw is a weak part in life. Imported screws and barrels are expensive and have a long procurement cycle. The service life of domestic parts is low, and the extrusion rate in 3 months has dropped by more than 85%, and the traditional repair technology of spare parts can not meet the ideal life expectancy

Method used

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  • Long-life wear-resistant corrosion-resistant nano coating for extruder screw
  • Long-life wear-resistant corrosion-resistant nano coating for extruder screw
  • Long-life wear-resistant corrosion-resistant nano coating for extruder screw

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing:

[0023] The first aspect of this part introduces:

[0024] A long-life wear-resistant and corrosion-resistant nanocoating for extruder screws such as Figure 1-2 As shown in , it includes a nano-coating bottom layer 52 and a nano-ceramic coating surface layer 53 from inside to outside; the nano-coating bottom layer 52 is coated on the screw base 51 . The screw base 51 is not too restrictive.

[0025] The thickness of the nano-ceramic coating surface layer 53 is 100-200 μm, and the thickness of the nano-coating bottom layer 52 is 50-80 μm.

[0026] In the present invention, the nano-ceramic coating surface layer 53 is a nano-scale cermet Ni-based or Cr-based nano-ceramic composite coating.

[0027] The nano-ceramic coating surface layer 53 contains ceramic materials with a particle size less than 100 nanometers.

[0028] The acid mist corrosion resistance of the nano-co...

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Abstract

The invention relates to a long-life wear-resistant corrosion-resistant nano coating for an extruder screw. The long-life wear-resistant corrosion-resistant nano coating comprises a nano coating bottom layer and a nano ceramic coating surface layer from inside to outside, wherein the nano coating bottom layer is coated on a screw base body. The nano ceramic composite coating provided by the invention has the advantages of wear resistance, corrosion resistance, high density and high binding force, and the nano coating material has high hardness and chemical stability.

Description

technical field [0001] The invention belongs to the field of extruder equipment, and in particular relates to a long-life wear-resistant and corrosion-resistant nano-coating for extrusion single-head screws, flat screws and tapered screws of various specifications. Background technique [0002] The most critical parts in the extruder are the extruder screw and barrel, which are coated on the surface of the equipment or parts by completing the plasticized extrusion of plastic particles. The screw and barrel are used in pairs. After a period of use, the screw and barrel will be worn, and the metal of the screw and barrel body will fall off, resulting in slag metal in the extruded various polymer materials such as polyethylene, etc., coating The surface quality of the product is unqualified. At the same time, the gap between the screw and the barrel increases due to wear, and the extrusion volume decreases, which affects the production capacity. The service life of the screw a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/505
CPCB29C48/509
Inventor 田庆芬李刚
Owner 上海英佛曼纳米科技股份有限公司