Casting high ferrochrome or casting high chromium steel roll for welding steel pipe

Abstract

The invention provides a cast high chrome iron or cast high chrome steel roller used to roll weld steel tube and on straight-slim welding steel tube roller, or the like, wherein the cast high chrome iron roller comprises C in 1.8-2.8%, Si <=1.0%, Mn <=1.0%, P<=0.05%, S<=0.05%, Cr in 12-22%, Ni in 0.5-3.0%, Mo in 0. 0%, Ti in 0-0.3%, V in 0-1.0%, Cu in 0-1.0%, RE in 0.01-0.5%, and the left is Fe. The inventive roller has uniform organism, high abrasion resistance and flexibility, while its service life is 2-5 times of general product and material utilization can reach 70% or 80%, with low cost.

Description

technical field

[0001] The invention relates to a cast roll, in particular to a cast high-chromium iron or cast high-chromium steel roll for rolling welded steel pipes. Background technique

[0002] The roll is the main component with the largest consumption in the production of welded steel pipe. The quality and life of the roll directly affect the quality and production efficiency of the welded steel pipe. The rolls are in direct contact with the rolled piece and complete the entire rolling process. While bearing the effect of relatively large compressive stress, it also has to bear rolling and sliding friction, and some are also affected by severe cooling and heat, so they are severely worn and need to be replaced frequently.

[0003] At present, the welded steel pipe rolls that represent the international advanced level are forged rolls made of alloy tool steel with the grades X165CrMoV12 or X155CrMoV121 produced in Germany, X165CrMoV12KU produced in Italy, D2 produced ...

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