Carriage steel plate and preparation method thereof and carriage

Abstract

The invention relates to a carriage steel plate and a preparation method thereof and a carriage, and belongs to the technical field of carriage steel plate production. The carriage steel plate comprises an abrasion-resistant steel layer and a high-strength carbon steel layer, and the carriage plate is formed by metallurgy compounding of the abrasion-resistant steel layer and the high-strength carbon steel layer. According to the carriage steel plate, the shear strength ranges from 300 MPa to 321 MPa, the binding force between two layers is high, the tensile strength ranges from 600 MPa to 875 MPa, the strength is high, the surface hardness of the abrasion-resistant layer ranges from 27 HRC to 38 HRC, good abrasion resistance is achieved, the abrasion-resistant pitting potential ranges from 0.10 V to 0.45 V, good corrosion resistance is achieved, and the comprehensive performance is good. After the carriage steel plate is made into the carriage, the abrasion-resistant layer is in contact with goods and can bear the impact and corrosion working conditions of the goods, the high-strength carbon steel layer is far away from the goods and can provide high-strength support, the carriage steel plate has good welding performance, the requirements for light weight, energy conservation and consumption reduction are met, and the service life of the carriage is prolonged.

Description

technical field [0001] The invention belongs to the technical field of steel plate production for carriages, and in particular relates to a steel plate for carriages, a preparation method thereof and a carriage. Background technique [0002] The truck compartment is used to transport goods. During the transportation of goods, the truck compartment (especially dump trucks, mine cars, etc.) needs to bear the impact of the goods, and may also be corroded by the corrosive goods transported. Therefore, the steel plate for the truck compartment needs It has good wear resistance, corrosion resistance and strength properties. [0003] At present, the steel plates used in the carriage are usually coated high-strength steel plates. This kind of coated steel plate has good corrosion resistance and strength in the early stage of use, but the coating has poor wear resistance. The coating is peeled off, and the exposed steel substrate at the peeled off place will be corroded by corrosive...

AI Technical Summary

Problems solved by technology

[0003] At present, the steel plates used in the carriage are usually coated high-strength steel plates. This kind of coated steel plate has good corrosion resistance and strength in the early stage of use, but the coating has poor wear resistance. The coating is peeled off, and the exposed steel substrate at the peeled off place will be corroded by corrosive goods, so that the compartment is damaged and cannot be used for a long time

In order to solve the above problems, it is considered to use martensitic stainless steel or duplex stainless steel as steel plates for truck compartments, which have good corrosion resistance, wear resistance and strength, but the production cost of martensitic stainless steel or duplex stainless steel is too high

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