Flame spraying method for high melting metal skin flexible ceramic wire

A technology of high melting point metal and flexible ceramics, applied in metal material coating process, melt spraying, coating and other directions, can solve the problems of complex manufacturing process, high import price and limited length.

Inactive Publication Date: 2005-03-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The equipment of these two spraying methods is expensive, and the cost of spraying is very high
The ceramic powder is sintered to make a rod, which can be sprayed by flame spraying method, but the ceramic rod is brittle and its length is limited, so it cannot be sprayed continuously
The ceramic powder is wrapped with an organic sheath, which can be made into a flexible wire and sprayed by flame spraying, but the production equipment is expensive and the manufacturing process is complicated. Currently, only France can produce it, and the import price is very expensive.

Method used

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  • Flame spraying method for high melting metal skin flexible ceramic wire

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0005] Specific Embodiment 1: This embodiment is achieved in the following way: a. Preparation of drug core: the drug core powder composed of a mixture of binder powder and additive powder and ceramic powder is fully mixed and stirred with a high-energy ball mill, wherein the ceramic powder accounts for the drug core. 55-90% of the total weight of the powder, and the mixture of binder powder and additive powder accounts for 10-45% of the total weight of the core powder; In the device of the functional system, put the uniformly stirred drug core into the drug core powder injection device of the wire making machine, start the machine to draw the wire, and make a tubular drug core wire. After the wire is drawn, the finished wire is guided from the wire drawing hub Put it on the finished wire reel for use; c. Surface treatment: use a sandblasting machine to roughen the shaft diameter of the sprayed part of the crankshaft; d. Assembly: install a flame spraying wire feed wheel with k...

specific Embodiment approach 2

[0006] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the ceramic powder accounts for 55-85% of the total weight of the drug core powder, and the mixture of binder powder and additive powder accounts for 15-45% of the total weight of the drug core powder. %, the material of the coating is Q235, and the ceramic powder is WC, Al 2 o 3 , ZrO 2 or Cr 2 o 3 , the mixture of the binder powder and the additive powder is Ni, Al, Co, TiO 2 , Y 2 o 3 and any mixture of Ti. Other process parameters and reaction steps are the same as in Embodiment 1. The technical data of the flexible ceramic wire in this embodiment is shown in Table 1.

specific Embodiment approach 3

[0007] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the ceramic powder accounts for 65-90% of the total weight of the drug core powder, and the mixture of binder powder and additive powder accounts for 10-35% of the total weight of the drug core powder. %, the material of the coating is Ni, and the ceramic powder is WC, Al 2 o 3 , ZrO 2 or Cr 2 o 3 , the mixture of the binder powder and the additive powder is Al, Co, TiO 2 , Y 2 o 3 One or any mixture of Ti and Ti. Other process parameters and reaction steps are the same as in Embodiment 1.

[0008] The technical data of the flexible ceramic wire in this embodiment is shown in Table 1.

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Abstract

Flame spraying method for high melting metal skin flexible ceramic strip belongs to a hot spraying process. The invention is accomplished as follows : a. mixing and stirring powder core using high energy ball milling b. placing strip electrode coating in bobbin disk, placing powder core into refiller to make tube type powder core strip, c. surface coarsening of shank diameter of crank axle spray painting part d. mounting flame spraying strip delivery reel on strip making machine, encasing tube type powder core strip in reel and penetrating into spray gun nozzle, connecting spray gun with compressed air valve, acetylene and oxygen pipeline, e. adjusting strip delivery speed, pressure and flux of compressed air , acetylene and oxygen f. assembling crank axle at special rotary workbench, crank axle rotating while spray painting, spraying adopting manual manipulation, coating contour machining using crankshaft grinder. The invention has advantages of simple production apparatus, low cost.

Description

Technical field: [0001] The invention relates to a thermal spraying process, in particular to a process for preparing a ceramic coating by using flame spraying technology. Background technique: [0002] Thermal spraying is an important surface strengthening and life extension technology in surface engineering. Thermal spraying technology uses flame, electric arc, plasma, light and other heat sources to heat a certain linear or powder material to a molten or semi-molten state, accelerate spraying to the surface of the substrate, and form a coating. In principle, this technology can spray any base material, and various materials can be selected as coating materials, which can realize coatings such as high temperature resistance, corrosion resistance, wear resistance, oxidation resistance, improved conductivity, insulation, thermal barrier properties, etc. Features. This technology is suitable for the modification of the surface of structural parts of new products, as well as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/06C23C4/129
Inventor 刘爱国郭面焕
Owner HARBIN INST OF TECH
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