GB/T 33935-2017 in English

Analysis of the background of standard formulation and technological evolution

With the development of the mining machinery industry, vertical mill equipment is increasingly used in cement, metallurgy, chemical industry and other fields. However, as core components, grinding discs and roller liners face serious wear problems, which directly affect the service life and production efficiency of the equipment. In order to standardize the repair process and improve the repair quality, the China Machinery Industry Federation organized a number of companies to draft this standard, aiming to provide scientific basis and technical support for the repair of vertical mill discs, roller liners (roller sleeves).

Comparison of standard frameworks

Detailed explanation of repair technology requirements

Case: A mining company restored the wear resistance of the grinding disc lining through online repair technology, and the operating time after repair reached more than 90% of that of new products.

Implementation suggestions

1. Choose a repair mode:According to the equipment status and production needs, comprehensively consider the advantages and disadvantages of online repair and offline repair.
2. Material matching:The cladding material should match the composition of the parent material to ensure stable performance after repair.
3. Operator training: Welding technicians must have professional skills and welders must be certified.