Flame spray gun and spray device
A flame spraying and flame technology, applied in the field of alloy powder thermal spraying, can solve the problems of reduced utilization efficiency of alloy powder, influence of powder delivery efficiency, low utilization rate of alloy powder, etc., and achieve the effect of reducing particle size requirements and increasing utilization efficiency
Active Publication Date: 2015-04-29
ANTON OILFIELD SERVICES (GRP) LTD
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Problems solved by technology
[0005] (1) The powder feeding pipeline in the prior art is composed of multiple parts, resulting in different inner diameters in the powder feeding pipeline, and the powder feeding effect is poor. At the same time, the powder feeding pipeline made of copper has poor wear resistance. After a period of time, the wear will be very serious, and it will also seriously affect the powder feeding efficiency, resulting in a low utilization rate of the alloy powder and a short service life
[0006] (2) Due to the limitation of the number and size of the flame nozzle of the spray gun in the prior art, the flame nozzle has high requirements on the uniformity of the particle size of the alloy powder. Once the uniformity of the particle size of the alloy powder does not meet the requirements, it will be As a result, the utilization efficiency of alloy powder during spraying is greatly reduced
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[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0036] Such as figure 1 , figure 2 with image 3 As shown, an embodiment of the present invention provides a flame spraying gun, which includes a nozzle 1 and a powder feeding column 2 . Wherein, the central position of the nozzle 1 is provided with a penetrating powder injection hole 4 , and the flame injection holes 5 are uniformly arranged around the powder injection hole 4 . One end of the powder delivery column 2 is connected to the powder injection hole 4 of the nozzle 1 , and the other end of the powder delivery column 2 is installed with a powder delivery pipe joint 3 . Wherein, in the flame spraying gun, the powder feeding column 2 has an integrated structure.
[0037] The flame spraying gun provided in this embodiment passes through the powder feeding pipe column with an integrated structure. The inner surface of the pipe column...
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Abstract
The invention discloses a flame spray gun and a spray device, relates to the technical field of alloy powder thermal spraying, and solves the technical problems that in the prior art alloy powder is low in utilization efficiency and a flame spray gun is relatively short in service life. According to the main technical scheme, the flame spray gun comprises a nozzle and a powder supply tube column, wherein a through powder ejection hole is formed in the center of the nozzle; flame ejection holes are uniformly formed in the periphery of the powder ejection hole; one end of the powder supply tube column is communicated with the powder ejection hole of the nozzle; a powder supply tube connector is mounted at the other end of the powder supply tube column; the powder supply tube column is of an integrated structure. According to the flame spray device, automatic powder and flame spray control system equipment is adopted to control metering and conveying of fuel gases, oxidant gases and powder of the flame spray gun, the flame spray gun is mainly used for spraying powder flame, and the technical problems that in the prior art the alloy powder is low in utilization efficiency and a flame spray gun is relatively short in service life are solved.
Description
technical field [0001] The invention relates to the technical field of alloy powder thermal spraying, in particular to a flame spraying gun and a spraying device. Background technique [0002] Powder flame spraying is a thermal spraying method that uses an oxy-acetylene flame as a heat source, and the spray material is powder; the powder flame spraying equipment is simple, and there are many types of materials that can be sprayed. Therefore, powder flame spraying is the most commonly used thermal spraying process. Powder flame spraying uses oxyacetylene flame alloy powder spraying gun to achieve spraying. Specifically, oxygen and acetylene are sent to the flame nozzle of flame spraying respectively, and the powder is sprayed out from another powder nozzle through the powder feeding pipeline. Oxygen and acetylene are burned to produce The powder is sprayed onto the surface of the metal workpiece after surface pretreatment at high temperature to form a semi-molten alloy coati...
Claims
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IPC IPC(8): C23C4/12C23C4/06C23C4/129
Inventor 李建华
Owner ANTON OILFIELD SERVICES (GRP) LTD