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Electron beam surface alloying method for 45# steel

A surface alloying, electron beam technology, applied in metal material coating process, melt spraying, coating and other directions, can solve rare problems and other problems, achieve reduced turnaround time, short energy deposition time, high energy density. Effect

Inactive Publication Date: 2017-11-24
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Some scholars at home and abroad use electron beam technology for surface modification in the research process of metal materials, focusing on the change of mechanical properties of materials after electron beam treatment and the thermal-stress coupling physical mechanism of the interaction between electron beam and material surface; and Compared with this, there are not many studies on the application of continuous electron beam scanning technology to surface alloying modification.

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  • Electron beam surface alloying method for 45# steel
  • Electron beam surface alloying method for 45# steel

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Embodiment 1

[0027] This embodiment provides a method for electron beam surface alloying of 45 steel.

[0028] The 45 steel electron beam surface alloying method that present embodiment provides:

[0029] The first step of surface pretreatment: select the commercially available ordinary industrial medium carbon steel 45 steel, and cut it into a cube sample of 40×40×40mm by wire electric discharge as the substrate; use metallographic sandpaper to polish the surface of the sample, and use absolute ethanol After cleaning, polish. The sandpaper used for grinding is 400, 800, 1200, and 2000 mesh sandpaper in sequence. The diamond polishing particle size used for polishing is 0.5µm. Polish until the surface of the 45 steel substrate sample to be treated has no obvious scratches, and finally clean it with absolute ethanol spare.

[0030] The second step of pre-coating: use plasma spraying equipment to spray the bonding layer on the 45 steel substrate; due to the presence of oil and impurities on...

Embodiment 2

[0036] This embodiment provides a method for electron beam surface alloying of 45 steel.

[0037] The 45 steel electron beam surface alloying method that present embodiment provides:

[0038] The first step of surface pretreatment: select the commercially available ordinary industrial medium carbon steel 45 steel, and cut it into a cube sample of 40×40×40mm by wire electric discharge as the substrate; use metallographic sandpaper to polish the surface of the sample, and use absolute ethanol After cleaning, polish. The sandpaper used for grinding is 400, 800, 1200, and 2000 mesh sandpaper in sequence. The diamond polishing particle size used for polishing is 0.5µm. Polish until the surface of the 45 steel substrate sample to be treated has no obvious scratches, and finally clean it with absolute ethanol spare.

[0039] The second step of pre-coating: use plasma spraying equipment to spray the bonding layer on the 45 steel substrate; due to the presence of oil and impurities on...

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Abstract

The invention discloses an electron beam surface alloying method for 45# steel. The electron beam surface alloying method comprises the steps of preset coating on the surface of the 45# steel and scanning through continuous electron beams, wherein the preset coating comprises the step that tungsten powder is sprayed on the surface of the 45# steel by plasma thermal spraying to form a spraying bonding layer; and scanning through continuous electron beams comprises the step that electron beam scanning is carried out on the surface of the 45# steel so as to obtain a surface alloying modification layer on the surface of the 45# steel. According to the electron beam surface alloying method, the continuous electron beam scanning technology is combined with the plasma thermal spraying, the novel medium-carbon steel-based composite material which takes a high-performance alloying element as a reinforced phase is prepared by adopting the unique advantages of the continuous surface treatment, so that the procedures are greatly simplified, the cost is reduced, the turnover time is shortened, and the surface performance of the 45# steel is improved and the service life of the 45# steel is prolonged by preparing the alloy layer with high hardness, high abrasion resistance and high corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of surface modification of metal materials, in particular to an electron beam surface alloying method for 45 steel. Background technique [0002] As a typical representative of medium carbon steel (0.25% to 0.6% carbon content), 45 steel has the characteristics of good comprehensive mechanical properties, easy processing and low price, so it is widely used in industry. In actual industrial production, it is mainly used in the manufacture of shafts, gears and some main force-bearing components, as well as the manufacture of steel structures and cranes. For medium carbon structural steel, quenching and tempering (quenching and high temperature tempering) are generally used in industry. However, after quenching and tempering treatment, the surface hardness of medium carbon structural steel is low, and it is often difficult to meet the requirements, which limits its application range. Therefore, surface modifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/134C23C4/08C23C4/02C23C4/18
CPCC23C4/02C23C4/08C23C4/18C23C4/134
Inventor 魏德强任旭隆王荣王优王晓冰李圣吕少鹏崔月崔弘阳
Owner GUILIN UNIV OF ELECTRONIC TECH
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