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Carbon black reinforced metal-based micro-nano powder with high light absorbing property and preparation method thereof

A high light-absorbing, metal-based technology is applied in the field of metal-based micro-nano powder for laser remanufacturing and its preparation, carbon black-enhanced high-light-absorbing metal-based micro-nano powder and its preparation field, and can solve the problem of low laser absorptivity and so on. , to achieve the effect of good application prospect, good mechanical properties and narrow heat-affected zone

Inactive Publication Date: 2013-04-03
JIANGSU UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing laser remanufacturing powder has a low absorption rate of laser light, which leads to many limitations of laser remanufacturing technology in the process of remanufacturing thin-walled parts. Introduce carbon black powder into micron metal powder, and invent a carbon black-enhanced highly light-absorbing metal-based micro-nano powder and its preparation method. By giving full play to the strong light absorption of black matter and the surface effect of nanomaterials, laser remanufacturing can be improved. Use the laser absorption rate of the powder to break through the limitations of the existing laser remanufacturing technology in the remanufacturing of thin-walled parts

Method used

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  • Carbon black reinforced metal-based micro-nano powder with high light absorbing property and preparation method thereof
  • Carbon black reinforced metal-based micro-nano powder with high light absorbing property and preparation method thereof

Examples

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Effect test

example 1

[0036]Materials used in this example: the average particle size of the nano carbon black powder is 14 nm, the coloring strength is 140%, and the mass fraction is 1%; the micron metal powder is Al-Si alloy powder, the average particle size is 50 μm, and the mass fraction is 99% Using the above method and steps to prepare carbon black reinforced high light-absorbing metal-based micro-nano powder, the ball-milling compound parameters are that the ball-milling speed is 200 rpm, the ball-to-material ratio is 10:1, and the ball-milling time is 1 hour.

[0037] Observed by scanning electron microscope, the prepared micro-nano powder maintains the spherical characteristics of micro-nano powder ( figure 1 ), and its surface is coated with a large number of nano-carbon black powders with high dispersibility ( figure 2 ) to form the core-shell structure of the present invention. The micro-nano powder is used for laser welding to remanufacture 0.6mm thick thin-walled parts with penetrat...

example 2

[0039] Materials used in this example: the average particle size of nano-carbon black powder is 28nm, the coloring strength is 100%, and the mass fraction is 1.5%; the micron metal powder is Ni60 alloy powder, the average particle size is 75 μm, and the mass fraction is 98.5%; The method steps are to prepare carbon black-enhanced metal-based micro-nano powder with high light absorption. The core-shell structure features of the invention, and its practical use effect also achieves the purpose of the invention.

example 3

[0041] Materials used in this example: the average particle size of nano-carbon black powder is 22 nm, the coloring strength is 125%, and the mass fraction is 0.5%; the micron metal powder is iron-based F103 alloy powder, the average particle size is 60 μm, and the mass fraction is 99.5%; The above method and steps are used to prepare carbon black reinforced metal-based micro-nano powder with high light absorption. It has the features of the core-shell structure of the present invention, and its practical use effect also achieves the purpose of the present invention.

[0042] The above only lists several common carbon black-enhanced high light-absorbing metal-based micro-nano powders. Those skilled in the art can select different micron metal powders according to the remanufactured thin-walled material, and then follow the proportions and With the preparation method, ideal metal-based micro-nano powders with high light absorption and enhanced by carbon black suitable for the l...

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Abstract

The invention discloses a carbon black reinforced metal-based micro-nano powder with a high light absorbing property and a preparation method thereof. The micro-nano powder comprises the following components in percentage by mass: 0.5-1.5 percent of nanometer carbon black powder and 98.5-99.5 percent of micron metal powder, wherein the sum of the two components is 100 percent; the nanometer carbon black powder is coated on the surface of the micron metal powder through one or more of embedding, adhesion or chemical bond combination, so as to form a core-shell structure micro-nano powder using the micron metal powder as a core and the nanometer carbon black powder as a shell; and the preparation process of the micro-nano powder mainly comprises following steps: preparation of a nanometer carbon black suspension, spheroidization pre-treatment of the micron metal powder, ball-milling compounding of the nanometer carbon black suspension and the pre-treated micron metal powder , and drying of ball-milled and compounded micro-nano powder slurry. The carbon black reinforced metal-based micro-nano powder with the high light absorbing property, disclosed by the invention, has the advantages that very good absorbing rate of laser lights is obtained; requirements on the traditional laser forming mainstream technology for conveying the powder by using a direct powder feeding type laser forming technology can be met; and meanwhile, the manufactured thin-walled piece has very good quality in both shape control aspect and property control aspect.

Description

technical field [0001] The invention relates to a metal-based micro-nano powder and a preparation method thereof, in particular to a metal-based micro-nano powder for laser remanufacturing and a preparation method thereof, in particular to a carbon black-enhanced high light-absorbing metal-based micro-nano powder Powder and preparation method thereof. Background technique [0002] On May 13, 2010, 11 ministries and commissions including the National Development and Reform Commission, the Ministry of Science and Technology, and the Ministry of Industry and Information Technology jointly issued a document to promote the development of the remanufacturing industry, elevating the development of remanufacturing engineering to a basic national policy for realizing my country's sustainable development strategy. Professor Xu Binshi, an academician of the Chinese Academy of Engineering who took the lead in advocating and actively promoting remanufacturing engineering in China, clearl...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F9/04
Inventor 王宏宇吴志奎袁晓明黎向锋沈清程满金镜许瑞华张优
Owner JIANGSU UNIV
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