09
2021
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11
How to choose the right thermal spray process
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作者
According to different application environments, conditions and requirements, it is necessary to select a suitable thermal spraying process.
According to different application environments, conditions and requirements, it is necessary to select a suitable thermal spraying process.
The process selection of thermal spraying can be based on the following principles:
(1) The coating adhesion requirement is not high, the melting point of the spraying material does not exceed 2500℃, and flame spraying with low equipment cost can be used.
(2) Plasma spraying should be used for some relatively expensive parts that require higher coating performance.
(3) Arc spraying is suitable for metal spraying construction with large amount of work.
(4) Metal or alloy coatings that require high bonding strength and low porosity can be sprayed by supersonic spraying;
Low-pressure plasma spraying can be used for metal or ceramic coatings that require high bonding strength and low porosity; explosion spraying can be used to strengthen important components.
(5) For large batches of workpieces, automatic spraying is recommended.
(6) For parts with particularly high safety requirements, tests and demonstrations must be carried out before selecting the spraying process and materials.
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