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Alloyed powder and laser alloying method for corrosion-resistant layer for automobile skin

A technology of laser alloying and corrosion-resistant layer, which is applied in the direction of coating, metal processing equipment, metal material coating technology, etc., can solve the problems that do not meet the requirements of saving and green manufacturing, waste is difficult to deal with, and energy consumption is large. to achieve large-scale production, low maintenance costs, and reduced energy consumption

Inactive Publication Date: 2020-11-13
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the galvanizing process mainly adopts the hot-dip galvanizing method. During the galvanizing process, it is necessary to carry out pickling and annealing processes on the thin strip steel plate, which will inevitably bring about environmental pollution.
Especially in the pickling process, the pickling waste will cause great pollution to the environment, and the waste is difficult to dispose of; the annealing furnace in the galvanizing process consumes a lot of energy and does not meet the modern society's economical and green manufacturing requirements

Method used

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  • Alloyed powder and laser alloying method for corrosion-resistant layer for automobile skin

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Effect test

Embodiment 1

[0039] This embodiment provides a corrosion-resistant layer alloying powder for automobile skin and a laser alloying method. The latest development of ultra-broadband lasers is used to achieve rapid and efficient alloying preparation on the surface of thin strip steel. It is characterized in that, by weight percentage, the mass percentage composition of the alloyed powder is: C 0.03%, Al 0.2%, Mn 0.35%, Cr 20%, Mo 8%, Nb 4.25%, P ≤ 0.030%, S ≤ 0.030%, Ni balance, the particle size distribution of the alloying powder used: 400~525 mesh; the raw material composition is according to the above alloy ratio Proportioning is carried out, and then the small alloy ingot is vacuum smelted, the small alloy ingot is melted by medium frequency induction heating, and the powder is made by gas atomization method, and then the powder is sieved to obtain the desired alloyed powder, which is prepared by gas atomization method Alloyed powder spherical shape is good. A laser alloying method for ...

Embodiment 2

[0042]This embodiment provides a corrosion-resistant alloying powder for automobile skin and a laser alloying method. The latest development of ultra-broadband lasers is used to achieve rapid and efficient alloying preparation on the surface of thin strip steel plates. In terms of weight percentage, the mass percentage composition of the alloyed powder is: C 0.05%, Al 0.3%, Mn 0.45%, Cr 23%, Mo 10%, Nb 4.25%, P≤0.030%, S≤0.030%, Ni balance, the particle size distribution of the alloyed powder used: 400~525 mesh; the raw material components are proportioned according to the above alloy ratio, and then Carry out vacuum melting of small alloy ingots, apply medium frequency induction heating to melt small alloy ingots, use gas atomization method to make powder, and then carry out particle size sieving on the powder to obtain the required alloyed powder, and the shape of alloyed powder spherical shape prepared by gas atomization method good. A laser alloying method for a corrosion...

Embodiment 3

[0045] This embodiment provides a corrosion-resistant layer alloying powder for automobile skin and a laser alloying method. The latest development of ultra-broadband lasers is used to achieve rapid and efficient alloying preparation on the surface of thin strip steel plates. In terms of weight percentage, the mass percentage composition of the alloyed powder is: C 0.04%, Al 0.2%, Mn 0.45%, Cr23%, Mo 10%, Nb 3.15%, P≤0.030%, S≤0.030%, Ni balance, the particle size distribution of the alloyed powder used: 400~525 mesh; the raw material components are proportioned according to the above alloy ratio, and then carried out Vacuum smelting small alloy ingots, applying medium frequency induction heating to melt small alloy ingots, using gas atomization method to make powder, and then sieving the powder to obtain the desired alloyed powder, the alloyed powder balls prepared by gas atomization method have good shape . A laser alloying method for a corrosion-resistant layer of an autom...

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Abstract

The invention discloses alloyed powder and a laser alloying method for a corrosion-resistant layer for automobile skin, and belongs to the technical field of metal surface engineering. The laser alloying method includes the steps that raw materials are prepared into the required alloyed powder, the alloyed powder is uniformly sprayed on the surface of a thin belt steel plate, and rapid alloying machining is carried out on the alloyed powder on the surface of the thin belt steel plate with ultra wide band laser ray light spots to form an alloyed layer. According to the alloyed powder and the preparation method, the surface of the automobile skin obtains excellent corrosion resistance, and the preparation method is simple, environment-friendly, energy-saving and suitable for mass production.

Description

technical field [0001] The invention belongs to the technical field of metal surface engineering, in particular to a corrosion-resistant layer alloying powder for automobile skin and a laser alloying method. Background technique [0002] Automobile skins are mainly made of galvanized thin strip steel sheets because of their good corrosion resistance. The commonly used automobile skins are galvanized sheets with a thickness ranging from 0.5mm to 3.0mm. At present, the hot-dip galvanizing method is mainly used in the galvanizing process. During the galvanizing process, pickling, annealing and other processes are required for the thin strip steel plate, which will inevitably cause environmental pollution. Especially in the pickling process, the pickling waste will cause great pollution to the environment, and the waste is difficult to dispose of; the annealing furnace in the galvanizing process consumes a lot of energy and does not meet the economical and green manufacturing re...

Claims

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Application Information

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IPC IPC(8): C22C19/05B22F9/08C23C24/10B22F1/00
CPCC22C19/055B22F9/082C23C24/103B22F2009/0848B22F1/065
Inventor 付宇明张阔郑立娟
Owner YANSHAN UNIV
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