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Laser cladding working head adapted for cladding layer capability gradient change

A gradient change and laser cladding technology, which is applied in laser welding equipment, metal material coating process, coating, etc., can solve the continuous change of continuous change and the continuous change of cladding layer performance. Incompatibility and other problems, to achieve the effect of reducing the outflow speed

Inactive Publication Date: 2008-01-09
BEIJING UNIV OF TECH
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Problems solved by technology

[0005] In addition, if the powder output is required to change continuously, since the powder leaves the powder gas passage 19, passes through the wide powder gas separation chamber 22, and then enters the narrow powder output passage 23, the continuous change of the powder output will be caused. It does not coincide with the continuous change of the powder input amount, which causes the continuous change of the cladding layer performance to be inconsistent with the continuous change of the design performance

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  • Laser cladding working head adapted for cladding layer capability gradient change
  • Laser cladding working head adapted for cladding layer capability gradient change
  • Laser cladding working head adapted for cladding layer capability gradient change

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Embodiment Construction

[0018] The present invention is a laser cladding working head suitable for the gradient change of cladding layer performance. It consists of two parts: powder gas separation and powder conveying. It is processed and assembled according to the design of Fig. 2 to Fig. 3. The powder conveying part includes the upper connecting head 9, Powder conveying connecting pipe 10, lower connecting head 11, sealing cap 12, protective gas input cylinder 13, powder feeding nozzle pressure cap 14, powder feeding nozzle 15, powder feeding nozzle seat 16, wherein: powder feeding nozzle 15 passes through the upper screw thread The powder feeding nozzle pressure cap 14 is connected together, the powder feeding nozzle 15 and the powder feeding nozzle pressure cap 14 are installed in the powder feeding nozzle seat body 16, the protective gas input cylinder 13 is threaded on the upper part of the powder feeding nozzle body 16, and the cap is sealed 12 is threaded on the upper part of the protective g...

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Abstract

A powder spraying nozzle for laser melting process consists of a powder-gas separating cylinder, a powder feeding mouth, a mixing head, an upper sealer, an outlet regulating ring, a powder conveying pipe, a lower connector, a protective gas feeding cylinder, a mouth cap, and a mouth seat. The feeding pipe of the powder-gas separating cylinder has diameter shrunk gradually and discharging holes radial distributed axially with alpha2 notlarger than 50 degrees between the axle and those of the discharging holes. Flowing-out rate of metal powder can be reduced after separation of metal powder from gas carrier to make feeding-amount met demand of laser gradient melting technology.

Description

technical field [0001] The invention relates to a laser cladding working head suitable for the gradient change of cladding layer performance, which belongs to the field of laser cladding. Background technique [0002] Composite, multi-functional, high-performance and low-cost advanced materials are important development directions of advanced material technology. [0003] The laser gradient cladding technology can continuously change the performance of the cladding layer of the workpiece to meet the requirements of the cladding layer performance of the workpiece using conditions. The premise of continuously changing the properties of the cladding layer of the workpiece is that the delivery of one or more metal powders that form the cladding layer can be accurately controlled, so it is very critical to use a laser cladding working head suitable for the delivery of various powder materials. [0004] At present, the cladding working head used in laser cladding is mainly compos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10B23K26/34
Inventor 左铁钏武强王旭葆杨武雄肖荣诗
Owner BEIJING UNIV OF TECH
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