Method for surface solid co-permeation on blade of cutter

Abstract

The invention discloses a method for surface solid co-permeation on a blade of a cutter. The method comprises the steps that (1), preprocessing is conducted on the cutter; the bottom face of the cutter on which preprocessing is conducted is taken as a solid co-permeation treatment region, and the other area of the cutter is coated with a permeation preventing boron paint and a nitrocarburization preventing paint; (2), the cutter processed in step (1) and a permeation agent are sealed in a permeation tank together to perform nitrogen-carbon-boron solid co-permeation treatment; (3), the cutter after solid co-permeation treatment is conducted is quenched in a quenching medium. The method has the advantages that blade hardness is significantly improved after the method is adopted, the wear resistance and corrosion resistance are significantly improved, and the service life of the cutter is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a method for solid co-infiltration on the surface of a knife edge. Background technique [0002] With the comprehensive mechanization of plowing, planting and harvesting of crops in our country, the level of mechanization is getting higher and higher. In my country, the loss of farming parts due to wear and tear amounts to billions of yuan every year. As one of the key components of agricultural machinery, the cutter operation object (grass, branches or stalks, etc.) is special, and requires strong wear resistance during the work process. However, due to abrasive wear, the cutting edge becomes blunt, the cutting ability becomes poor, and the operating efficiency and economic performance are greatly reduced. In actual production, the cutting edge is impacted by hard objects such as stones and bricks to cause chipping, which greatly shortens the trouble-free produc...

AI Technical Summary

Problems solved by technology

At present, domestic and foreign measures to strengthen the self-sharpening of agricultural machinery knives are mainly focused on material design, but there are still many problems, such as: the hardness, structure and composition of the self-sharpening edge section have not achieved gradient changes, and the differences between different alloy layers The bond strength is low, and it is easy to crack and peel off during use, which affects the use effect; the ratio of the wear rate of the cutting edge hardened layer to the base metal is not easy to control. If the base metal wears fast, the wear-resistant layer of the cutting edge is prominent, due High hardness and poor toughness make it easy to chip. If the wear-resistant layer is thin, it is difficult to obtain excellent self-sharpening effect after wear. In addition, it will cause deformation of the blade during self-sharpening and strengthening.

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