Double-layer rotary tiller wear-resistant coating

A technology of wear-resistant coating and wear-resistant layer, which is applied in the field of wear-resistant coating of double-layer rotary tillage tools, can solve the problems of easy peeling off of the coating, environmental pollution, complicated process, etc., and achieve reduction of maintenance time and cost, wear-resistant The effect of high-strength improvement and simple preparation

Inactive Publication Date: 2019-05-03
ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still disadvantages in the process of industrialization, such as complicated process, easy peeling off of the coating, and environmental pollution.

Method used

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  • Double-layer rotary tiller wear-resistant coating
  • Double-layer rotary tiller wear-resistant coating

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Effect test

preparation example Construction

[0026] A method for preparing a wear-resistant coating for a double-layer rotary tillage tool, the specific steps are:

[0027] Step 1. Shot peen and sandblast the surface of the rotary tiller to remove oil and scale, and polish the cutting edge brightly;

[0028] Step 2. Put the WC powder and nickel-based brazing material with a mass ratio of 20%~50% into the mixer and mix them for 2 hours, take them out, and use a binder to prepare the two mixed powders into a paste to prepare the inner wear-resistant layer A ointment, spare;

[0029] Step 3: Put the diamond micropowder and nickel-based solder with a mass ratio of 10%~18% into the mixer and mix them for 2 hours, take them out, and use a binder to prepare the two mixed powders into a paste to obtain the outer wear-resistant layer B ointment, spare;

[0030] Step 4: Apply the inner layer wear-resistant layer A paste prepared in step 2 evenly on both sides and sides of the cutting edge of the rotary tiller, and control the th...

Embodiment 1

[0035] Select quenched 65Mn steel as the base material, carry out surface treatment such as shot blasting and sand blasting on the selected samples, remove oil and scale, polish the pre-coated wear-resistant layer brightly, and mix the mass ratio of 20%~50%WC powder Put it into the mixer with nickel-based brazing material and mix it for 2 hours, take it out, and use the binder to make the two kinds of mixed powder into a paste to prepare the inner wear-resistant layer A paste, which is set aside; the mass ratio is 10%~18% Put the diamond micropowder and nickel-based brazing material into the mixer and mix for 2 hours, then take them out, and use a binder to prepare the two mixed powders into a paste to prepare the outer wear-resistant layer B paste, which is set aside; the prepared inner layer The wear-resistant layer A paste is evenly coated on the surface-treated specimens with specifications of ϕ6mm×25mm, 25mm×5mm×100mm and the rotary tiller, and the thickness is controlled ...

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Abstract

The invention provides a double-layer rotary tiller wear-resistant coating. The coating comprises an inner layer wear-resistant coating A and an outer layer wear-resistant coating B, wherein the innerlayer wear-resistant coating A comprises components by mass as following: 10%-25% of WC powder, and the balance BNi82CrSiBFe brazing filler metal; and the outer layer wear-resistant coating B comprises components by mass as following: 5%-9% of diamond micro-powder, and the balance BNi82CrSiBFe brazing filler metal. The preparation method of the coating includes steps of separately preparing pastyfluids of the inner layer wear-resistant coating A and the outer layer wear-resistant coating B, layered pre-setting the pasty fluid of the inner layer wear-resistant coating A and the pasty fluid ofthe outer layer wear-resistant coating B at the edge of a rotary tiller blade, drying the pasty fluids under the temperature of 110 DEG C to 150 DEG C for 30-60 minutes, using a vacuum brazing furnace with vacuum degree 1*10<-2> to braze the pasty fluids under the temperature of 1050 DEG C to 1080 DEG C for 30 minutes, furnace cooling to braze apply the wear-resistant coating on the surface of arotary tiller substrate, and applying vacuum heat treatment on the rotary tiller after being discharged from the furnace to eliminate residual heat stress on the blade and in the coating. By braze applying the composite wear-resistant coating on the surface of the rotary tiller, the problem of poor wear-resistance of a common rotary tiller is solved, and the service life of the rotary tiller is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery equipment, in particular to a double-layer wear-resistant coating for rotary tillage cutters. Background technique [0002] With the rapid development of my country's economy, the comprehensive mechanization level of crop plowing, planting and harvesting is getting higher and higher. Cutting tools are the key components of agricultural machinery, which directly affect the quality and efficiency of agricultural machinery operations. According to data, the losses caused by the failure of farming components alone in our country amount to billions of yuan per year. The operating objects of agricultural machinery cutting tools are special, and they are required to have strong wear resistance, sharpness and corrosion resistance during the working process. However, due to sand abrasive wear, plant juice corrosion, etc., the cutting edge becomes blunt, the cutting ability deteriorates, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCA01B33/10B23K35/025C23C28/02C23C28/027C23C30/00
Inventor 龙伟民秦建裴夤崟钟素娟吴铭方宋克兴刘建秀李秀朋
Owner ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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