Method for preparing quasi-crystallized composite through laser processing

A composite material and laser processing technology, applied in the direction of metal material coating process, coating, etc., can solve the problems such as the decrease of the microhardness distribution of the deposited layer, and achieve the effect of easy popularization and application, strong applicability, and simple and convenient process
CN106544672AActive Publication Date: 2017-03-29SHANDONG JIANZHU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG JIANZHU UNIV
Publication Date
2017-03-29

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Abstract

The invention discloses a method for preparing a quasi-crystallized composite through laser processing. The method comprises the specific steps that a certain mass proportion of Stellite SF 12-NB-Mo mixed powder is dried and fully mixed, and argon is adopted as the protective gas; a laser, a coaxial powder feeder and a synchronous wire feeder are adopted for conducting laser melting deposition treatment on the surface of a titanium alloy, wherein according to process parameters, the laser power is 1.00-4.80 kW, the spot diameter is 0.3-4.0 mm, the laser beam scanning speed is 12-18 mm / s, the powder feeding rate is 6-32 g / min, the multichannel overlapping rate is 18-55%, and the wire feeding speed is 8-15 mm / s; and meanwhile, La2O3-coated TC11 wires are fed to the edge of a molten bath at a certain angle, and after the powder and the wires are subjected to laser processing at the same time, a laser melting deposition composite can be obtained. The laser coaxial powder feeding mode is adopted for melting a SiMn powder laser alloy to the surface of the composite, so that the quasi-crystallized composite is formed. By adoption of the method for preparing the quasi-crystallized composite through laser processing, the composite with the surface appearance and the microhardness remarkably improved can be obtained.
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Description

technical field

[0001] The invention relates to a green, high-efficiency and energy-saving method for realizing quasi-crystallization on the surface of a titanium alloy, which belongs to the technical field of material surface strengthening. In particular, it relates to a method for quasi-crystallizing laser melting deposition composite materials in an argon environment by using laser synchronous melting powder wire feeding technology. Background technique

[0002] As one of the key technologies in the field of additive manufacturing, laser fuse deposition technology has been applied in some aviation industry products. Compared with the widely used laser fused powder deposition technology, the laser fused wire deposition technology has many advantages such as high material utilization rate, fast speed, green environmental protection, fewer defects in the deposited layer and a finer structure. The laser fuse deposition technology can realize the nanometerization of the workp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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