Material and processing technology of water scraping plate of descaling box

Abstract

The invention provides a material of a water scraping plate of a descaling box. The element ratio of the material is 0.65%-0.75% of C, 21%-23% of Cr, 1.5%-2% of Ni, 2% of Mo, 0.5% of W, 0.2%-0.5% of Re, and the balance Fe. The processing technology of the water scraping plate of the descaling box comprises the following operation steps that 1, a metal grinding tool is processed; 2, sand mixing andshaping is performed; (3), a baking mold is heated in a drying oven; (4), smelting is performed; and (5) heat treatment is performed, wherein no casting defect exists on the detected surface after the casting is cleaned, and high-temperature tempering treatment is performed. In the step (2), sand mixing and shaping comprises the following steps of adding raw sand and a collapsibility agent, adding organic fat, adding water glass and discharging sand. According to the material, the processing technology is simple, and the operation is convenient; and meanwhile, the water scraping plate prepared by the processing technology is high in percent of pass and excellent in performance, and meanwhile is good in anti-high-temperature, wear-resistance and washing-resistance performance; and the service life of the water scraping plate is prolonged, and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the field of a descaling box wiper, in particular to a material and a processing technology of a descaling box wiper. Background technique [0002] According to the actual working conditions of the wiper blades in the descaling box and the use conditions of the existing wiper blades, it is concluded that the wiper blades must have the characteristics of high temperature resistance, wear resistance and erosion resistance in order to achieve a good use effect. However, the existing scraper materials cannot have these characteristics at the same time even if they are surface quenched, so a new material needs to be developed, and the new material cannot be directly processed and used, so it needs to be cast after smelting; The water plate is a slender piece, and it is difficult to cast. However, the qualified rate of the products cast by the casting method in the prior art is low, which increases the manufacturing cost. Contents ...

AI Technical Summary

Problems solved by technology

However, the existing scraper materials cannot have these characteristics at the same time even if they are surface quenched, so a new material needs to be developed, and the new material cannot be directly processed and used, so it needs to be cast after smelting; The water plate is a slender piece, and it is difficult to cast. However, the qualified rate of the products cast by the casting method of the prior art is low, which increases the manufacturing cost.

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