Thermal spraying technology of ceramic spray guide wheel

Thermal spraying technology of ceramic spray guide wheel:

High temperature resistance and oxidation resistance (porcelain spray guide wheel for wire drawing machine) - This type of coating resizes chemical or physical differentiation and improves the high-temperature performance of parts. This type of coating is divided into the following types:

(1) Thermal barrier coating -- acts as a thermal barrier between parts and high temperature environment. Typical coatings are zirconia coatings stabilized with yttrium oxide.

(2) high-temperature oxidation resistance coating -- maintain the substrate's high-temperature oxidation resistance. The typical coating is nickel/chromium. 

(3) Heat resistant corrosion coating -- maintaining the substrate exposed to hot corrosive gases. The typical coating is nickel/chromium.

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Wear resistance -- the largest application area of thermal spraying technology at high and low temperatures.

This type of coating is divided into the following types:

(1) Adhesive wear or scratch resistance - two surfaces slide relative, debris from one surface to another surface, adhesive wear or scratch attack. Typical coatings are cobalt-based tungsten carbide, nichrome/chromium carbide coatings.

(2) wear-resistant particle wear -- when a harder surface slides on a softer surface, and there is wear between the two surfaces, abrasive wear occurs. When fibers and threads pass through the surface at high speed, abrasive wear also occurs. Proprietary typical coatings are cobalt-based nickel-chromium alloy, self-fusing alloy mixed molybdenum, chromium oxide coating. (3) Resistance to vibration wear -- repeated loading and unloading produce periodic stress leading to surface cracking and large area shedding. Typical coatings are alumina/titanium dioxide coatings.

(4) cavitation wear resistance -- mechanical impact of liquid activities on the surface. The special typical coating is aluminum bronze coating.

(5) Erosion wear resistance -- when gas or liquid particles impact the surface at high speed, erosion wear occurs. Typical special coatings are alumina/titanium dioxide, alumina coating, thermal spray ceramic guide wheel.