How to choose the right thermal spraying process

       According to different application environments, conditions and requirements, it is necessary to select the appropriate thermal spraying process.







The process selection of thermal spraying can be based on the following principles:







(1) The requirements for the bonding force of the coating are not high, and the melting point of the spraying material does not exceed 2500 °C, and flame spraying with low equipment cost can be used.







(2) Plasma spraying should be used for some of the more expensive parts with higher coating performance requirements.







(3) Arc spraying should be used for metal spraying construction with a large amount of work.







(4) Supersonic spraying can be used for metal or alloy coatings requiring high bonding force and low porosity;







Low-pressure plasma spraying can be used for metal or ceramic coatings that require high bonding force and low porosity; explosive spraying can be used to strengthen important parts.







(5) For large batches of workpieces, automatic spraying should be used.







(6) For parts with particularly high safety requirements, tests and demonstrations must be carried out before selecting the spraying process and materials.