High-strength grinder roll matrix material easy to weld

Abstract

The invention discloses a high-strength grinder roll matrix material easy to weld. The high-strength grinder roll matrix material easy to weld comprises the following components, by mass percentage, 1.5% to 1.8% of manganese, 0.05% to 0.08% of carbon, 0.10% to 0.30% of silicon, 1.0% to 2.5% of nickel, 3.5% to 4.0% of chromium, 0.02% to 0.04% of niobium, 0.04% to 0.06% of vanadium, 0.010% to 0.020%of titanium, 0 to 0.005% of sulphur, 0 to 0.010% of phosphorus, and the balance iron. The high-strength grinder roll matrix material easy to weld is high in strength, has the yield strength larger than 500 MPa, and has good welding performance; when the high-strength grinder roll matrix material easy to weld is applied to a common welding technology, no preheating is needed, no cracks appear after natural cooling of welding, the strength of the material is not obviously reduced when the material is used as welding parent metal, and therefore, materials with high abrasion resistance can be conveniently arranged on a roll surface in a bead weld manner.

Description

technical field [0001] The invention relates to the technical field of a grinding roller base material, in particular to a high-strength and easy-to-weld grinding roll base material. Background technique [0002] Cement is the basic raw material of the construction industry. According to the composition of cement, it can be divided into Portland cement, aluminate cement, sulphoaluminate cement, fluoroaluminate cement and ferroaluminate cement. The common raw materials of cement are Limestone, granulated blast furnace slag, volcanic ash, fly ash and gypsum powder, etc., these raw materials for cement preparation need to be processed into powder with a certain particle size by grinding equipment, so as to achieve uniform mixing and sufficient reaction. [0003] Due to the huge output of the cement industry, cement processing equipment needs to work continuously for a long time under the condition of high strength, heavy load and high efficiency. The grinding rollers and other ...

AI Technical Summary

Problems solved by technology

The grinding rollers in the prior art either have high strength, such as high-carbon steel, high-manganese steel and other materials, but their welding performance is poor, and they need to be preheated before welding, and they need to avoid Otherwise, the strength of the grinding roller will drop significantly after the welding operation; or it has good welding performance, such as being made of ordinary low-carbon steel and other materials, but its strength is poor, and high-strength, Prolonged use is prone to deformation