What material is the girth band of the catalytic smoke extractor made of?

2016-10-20View Original

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This post was last edited by karamay on 2016-10-20 09:59. Request for help: 1. Does anyone know what material the exhaust fan ring (that ring surrounding the blades) is made of? Is a wear-resistant coating applied to the inner surface? Why isn’t it smooth enough? 2. What material is used for the wear-resistant layer on the blades, and are there any wear resistance specifications?

Reply #22016-10-20

Ours is made of stainless steel (0Cr18Ni9Ti); it was coated with a wear-resistant \"Great Wall No. 1\" coating when it was new, but after years of operation, this area has also become pitted due to abrasion by smoke.

Reply #32016-10-21

We also have grooves on the surface; the Great Wall No. 1 can no longer be seen, and there is no wear and tear from regular use.

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What material is the girth band of the catalytic smoke extractor made of?

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