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Preparation method of manganese-boron alloy steel wear-resistant layer

A technology of alloy steel and wear-resistant layer, which is applied in the field of preparation of alloy steel wear-resistant layer, can solve the problems of reduced service life of wear-resistant parts of agricultural machinery, and achieve the effects of easy purchase, high density and simple sintering process

Inactive Publication Date: 2019-11-15
JIANGSU JINGAN AGRI EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, wear failure is one of the main reasons for the decline in the service life of wear-resistant parts of agricultural machinery

Method used

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  • Preparation method of manganese-boron alloy steel wear-resistant layer
  • Preparation method of manganese-boron alloy steel wear-resistant layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1 Manganese-boron alloy steel is coated with a sintered wear-resistant layer:

[0017] In the embodiment of the present invention, Nb, V microalloyed manganese-boron alloy steel is smelted in a vacuum induction furnace, and an ingot of 25 kg is obtained after vacuum casting. The steel ingot is forged into a 35mm thick plate, and then hot rolled into a 6mm plate. The heat treatment adopts austenitizing temperature of 950℃, holding for 20 minutes, and then water quenching. The composition of the embodiment Nb and V microalloyed manganese-boron alloy steel is shown in Table 1.

[0018] The surface of the alloy steel plate is treated with a sandblasting machine to remove the oxide scale, and then polished to a surface roughness of Ra 1.6μm. It is ultrasonically cleaned with acetone and dried for later use. Mix Ni60 powder (30~60μm) and WC powder (20~40μm) at a control ratio of 85% and 15%, then mix with a binder mixed with turpentine oil and rosin, and coat the treated...

Embodiment 2

[0021] Example 2 A rotary tiller was prepared from manganese-boron alloy steel and then coated with a sintered wear-resistant layer:

[0022] The manganese-boron alloy steel smelted in Example 1 was used to prepare a rotary tiller, and the forming and quenching treatments were completed. Use a sandblasting machine to sandblast the surface of the rotary tiller to remove the oxide scale, and then clean the surface. Coat the mixed wear-resistant alloy powder on the surface of the rotary tiller and place it in a vacuum furnace. -3 Pa, then heat up to 1030°C, keep it warm for 3h and then slowly cool down. figure 2 Shown is a rotary cutter prepared by sintering. The actual comparative evaluation experiment was carried out on the coated and uncoated rotary cultivators. The results showed that the uncoated manganese-boron steel rotary cultivator had an area of ​​300 mu, while the coated manganese-boron steel The cultivated area under the same conditions is 1,300 mu, which has been incr...

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Abstract

The invention relates to a preparation method of a manganese-boron alloy steel wear-resistant layer, in particular to a method for sintering and prefabricating a wear-resistant layer on the surface ofNb and V microalloyed manganese-boron steel from Ni-based powder and WC alloy powder. The preparation method comprises the steps that according to weight percent, 85% of Ni60 alloy powder and 15% ofWC powder are mixed to prepare wear-resistant powder, then the wear-resistant powder is uniformly mixed with a binder to be in a viscous state, and the surface of the prefabricated manganese-boron steel is coated with the wear-resistant powder; the coated manganese-boron steel is placed in a vacuum furnace, heat preservation sintering is carried out for 2-5h in the temperature range of 1000-1050 DEG C, the wear-resistant layer with good bonding strength is obtained, and the wear resistance of the manganese-boron steel can be greatly improved. Commercial Ni60 alloy powder and WC powder are utilized, the sintering temperature is controlled within a proper range, so that the manganese-boron alloy steel still has good mechanical properties after being sintered, the high safety of the manganese-boron alloy steel used as a structural member can be ensured, and the wear resistance of the manganese-boron alloy steel is obviously improved by means of the wear-resistant layer for coating.

Description

Technical field [0001] The invention relates to the field of preparation of alloy steel wear-resistant layers, in particular to a method for preparing Nb, V manganese-boron alloy steel wear-resistant layers. Background technique [0002] Manganese-boron alloy steel has the characteristics of high strength and good processing and formability. At first, it was widely used in the automobile industry, which promoted the lightweight development of automobiles. Manganese-boron steel has good hardenability, so it can be integrally formed by hot stamping forming process, and forming and quenching can be completed at the same time, which can well control the overall dimensions of alloy steel products and has good strength and toughness. Manganese-boron alloy steel has good strength and toughness, and can be directly water quenched during the quenching process without oil quenching. It has the characteristics of green and environmental protection. Therefore, it has been applied in the fiel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F7/04B22F3/10C21D1/18C21D6/00C22C19/05C22C32/00C22C38/02C22C38/04C22C38/06C22C38/46C22C38/48C22C38/50C22C38/54
CPCB22F3/1007B22F7/04C21D1/18C21D6/004C21D6/005C21D6/008C22C19/056C22C19/058C22C32/0052C22C38/002C22C38/02C22C38/04C22C38/06C22C38/46C22C38/48C22C38/50C22C38/54
Inventor 胡小峰唐存干孙裕晶桂庚利
Owner JIANGSU JINGAN AGRI EQUIP