Worm type central powder feeding type plasma cladding head

A plasma cladding and plasma spray gun technology, applied in the direction of metal material coating process, coating, etc., can solve the problems of powder uniformity and concentration, reduce powder utilization rate, affect cladding quality and other problems, and achieve cladding efficiency. Improve, improve uniformity and convergence, improve the effect of cladding quality

Inactive Publication Date: 2021-01-22
QINGDAO UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

However, when this method is used to feed powder, each powder flow will collide with each other when it converges to the center, and there are differences in the speed of each powder flow when it converges, so the uniformity and aggregation of the powder will be greatly affected during the convergence. impact, thus splashing around, reducing the utilization rate of powder and affecting the quality of cladding

Method used

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  • Worm type central powder feeding type plasma cladding head
  • Worm type central powder feeding type plasma cladding head
  • Worm type central powder feeding type plasma cladding head

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specific Embodiment approach

[0015] Different from the traditional pneumatic powder-feeding type cladding head, the present invention belongs to a mechanical central powder-feeding method, and uses a worm to realize the control of the powder-feeding process. In conjunction with above-mentioned accompanying drawing, the specific embodiment of the present invention is as follows:

[0016] A worm screw center powder feeding type plasma cladding head is composed of a center powder feeding part, a plasma spray gun part and a water cooling jacket part. The central powder feeding part is composed of powder hopper, powder feeding worm and control system. Powder feeding worm, such as figure 1 As shown, the powder can be fed downward by rotating; the powder hopper, such as figure 2 As shown, the design has a powder inlet, a worm installation port and a powder outlet; the center powder feeding part, such as image 3 As shown, the powder feeding worm is installed on the central shaft, so that the upper end is con...

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Abstract

The invention discloses a worm type central powder feeding type plasma cladding head. The worm type central powder feeding type plasma cladding head comprises a central powder feeding part, a plasma spraying gun part and a water cooled jacket part, wherein the central powder feeding part is formed by a powder hopper, a powder feeding screw and a control system; the powder feeding screw is arrangedon a center shaft of the central powder feeding part and matched with the inner wall of the hopper, the powder feeding purpose is achieved in a rotating mode, and the powder feeding method belongs toa mechanical powder feeding mode and is a central powder feeding method. The plasma spraying gun part and the water cooled jacket part act together to generate three plasma beams which are gathered at the intersection point of the axes of three plasma spraying guns and the axis of a worm to melt alloy powder and the surface of a metal part. The problems in the prior art are solved, and the powderutilization rate and the cladding quality of plasma cladding are further improved.

Description

technical field [0001] The invention belongs to the technical field of plasma cladding, and in particular relates to a design scheme of a worm screw type central powder feeding type plasma cladding head. Background technique [0002] Plasma cladding refers to a micro-beam plasma arc with high energy density obtained through a specific device. Using the plasma beam, various alloy powders are instantaneously heated and accelerated to form particle rays, which are sprayed onto the surface of the part to be processed. After melting, mixing, Physical and chemical changes such as solidification are finally combined with metallurgy on the surface of the part to realize the process of repairing, strengthening and remanufacturing the surface of the part. This technology can combine two materials with different or very different properties at the atomic level, and the heating and cooling speed is lower than that of laser, and the molten state is maintained for a long time, which is co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 潘家敬肖浚艺何燕郭怀志吕明利
Owner QINGDAO UNIV OF SCI & TECH
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