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Powder sending unit in high pressure for cold spray

A powder feeder and high-pressure technology, which is applied in the field of material surface modification devices, can solve problems such as overheating, grain growth, and oxidation of coating materials, and achieve the effects of improving pressure resistance, less equipment investment, and safe and reliable use

Inactive Publication Date: 2009-02-04
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the process of thermal spraying, excessive temperature makes the coating material prone to overheating, oxidation, and grain growth.

Method used

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  • Powder sending unit in high pressure for cold spray

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Embodiment Construction

[0014] attached figure 1 It is a structural schematic diagram of a high-pressure powder feeder suitable for cold spraying technology. In the figure, one end of the tee 5 is connected to the high-pressure gas source (A), one end is connected to the powder feeding gas inlet bolt 4, the other end is connected to the high-pressure pipe 7 by the threaded fastener 6, and the other end of the high-pressure pipe 7 is connected to the balance gas Inlet bolt 10 is tightened by thread. The balance gas inlet bolt 10 is screwed on the top of the powder box 9, and the powder box 9 is screwed on the tapered groove 2 by means of a fine thread. Two internal threads are opened on the same axis at the bottom of the tapered groove 2, respectively connecting with the powder outlet. Bolt 1 is connected with the powder feeding gas inlet bolt), and the front end of the powder feeding gas inlet bolt is drilled with a spray hole 3.

[0015] The high-pressure gas (A) with a working pressure of 0.6-4MP...

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Abstract

The invention relates to a cold spray coating high pressure powder feeder, belongs to the material surface modification installment technology area. Including the powder box, the awl groove, the gas and powder turnover bolt, the Three contact and the high pressure tube; one end of the three contact connects the high pressure gas source, the other two ends of the three contact separately connects the high pressure tube (7) and the feeder inlet bolt (4), the high pressure tube (7) connects the three contact (5) and the balance gas inlet bolt (10) with the worm firmware (6), the balance gas inlet bolt (10) connects the top of the powder-box (9), the interior end of the awl groove (2) opens two inner worms along the same mid axes and separately connects the powder outlet bolt (1) and the feeder bolt (4), the power-box (9) connects the awl groove (2) by the thin worm. The merit lies, the powder feeder structure is simple, reliable the powder outletes evenly, the energy conservation and have no environmental damage.

Description

technical field [0001] The invention belongs to the technical field of material surface modification devices, and in particular provides a high-pressure powder feeder for cold spraying, which is matched with a spray gun for cold spraying and can realize continuous powder feeding under high-pressure conditions. Background technique [0002] Among the existing material surface modification technologies, so-called thermal spraying technologies such as supersonic flame spraying and plasma spraying have been widely used in the industrial field. The key to these thermal spraying techniques is to use a device to heat the coating material so that it melts, atomizes, and hits the substrate at high speed, thereby forming a dense coating on the substrate. However, in the process of thermal spraying, excessive temperature makes the coating material prone to overheating, oxidation, and grain growth. [0003] In order to avoid the shortcomings of thermal spraying technology and improve t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B7/14B05B7/24B05C11/10
Inventor 周香林张济山崔华苏贤涌
Owner UNIV OF SCI & TECH BEIJING
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