A composite coating of aluminum-silicon wire submerged roller, its preparation method and its application
By employing four-layer or two-layer composite coatings of CoCrW, CoCrW-Ca2SiO4, Ca2SiO4, and Si-SiC on the submerged rollers of aluminized silicon wire, the problems of short service life and coating failure of the submerged rollers of aluminized silicon wire have been solved, achieving high wear resistance and high-temperature corrosion protection, extending the service life of the rollers and improving production efficiency.
CN117604427BActive Publication Date: 2026-05-26ANHUI MA STEEL SURFACE TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ANHUI MA STEEL SURFACE TECH CO LTD
- Filing Date
- 2023-11-29
- Publication Date
- 2026-05-26
Smart Images
Figure CN117604427B_ABST
Abstract
This invention relates to the field of composite coating technology, specifically to a composite coating for an aluminum-silicon wire submerged roll, its preparation method, and its application. The method involves sequentially depositing CoCrW, CoCrW-Ca2SiO4, Ca2SiO4, and Si-SiC, or sequentially depositing Ca2SiO4 and Si-SiC, on the surface of the submerged roll using atmospheric plasma spraying (APS). Subsequent machining then yields a four-layer CoCrW / CoCrW-Ca2SiO4 / Ca2SiO4 / Si-SiC composite coating or a two-layer Ca2SiO4 / Si-SiC composite coating (hereinafter referred to as the composite coating) with a specified surface roughness. The composite coating prepared by the method described in this invention can withstand temperatures up to 900℃ and possesses excellent wear resistance and aluminum-silicon corrosion resistance, significantly improving the lifespan of the submerged roll.
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