Selection criteria for materials used in non-standard flanges
by yane Yang Sales Manager The non-standard flange for materials used for non-standard flanges refers to non-metallic materials with a refractoriness of not less than 1587 °C. It should be adopted according to the product design requirements and should comply with the current relevant national material standards. The non-standard flange is subjected to various physical and mechanical movements in the high temperature environment, so that the refractory material may be damaged by melting, softening, cracking and abrasion.The non-standard flange materials mainly have the following strict requirements:
- (1) Stainless steel and fuses have high temperatures and do not change and melt at operating temperatures;
- (2) It can withstand the stress generated during high temperature operation, without losing structural strength, without deformation or breaking;
- (3) The volume is stable at high temperatures, and the masonry is not deformed or cracked due to expansion and contraction;
- (4) Non-standard flanges shall not rupture and peel off when the temperature changes or the heat is uneven;
- (5) It should have a certain ability to resist chemical attack;
- (6) It should have sufficient strength and wear resistance to withstand the scouring and impact of high temperature and high speed flame, soot and slag;
Raw materials for non-standard flange large-diameter flanges are made of refractory materials, high-temperature resistant materials, good sealing performance, and some ordinary steel materials and heat-resistant metals. Reasonable material selection plays an important role in ensuring the quality, safe and economical operation of large-diameter flange products and increasing their service life.
Source: China Non-standard Flanges Manufacturer - Yaang Pipe Industry Co., Limited (www.yaang.com)
Sponsor Ads
Created on Apr 24th 2019 18:40. Viewed 314 times.
Comments
No comment, be the first to comment.