Method of plasma spraying enamel coating on titanium alloy surface and hot rolling treatment
A surface plasma and plasma technology, applied in metal material coating process, coating, melting spray plating, etc., can solve the problems of small powder particle size, poor fluidity, and inability to directly use as spray material, etc., and achieve fewer holes and cracks. , The effect of uniform composition and coherent process
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Embodiment 1
[0017] Add 10% water and 3.5% polyacrylic acid dispersant to the prepared enamel powder to make it into a jelly. The volume fraction of solid matter in the jelly is 25%. The jelly is stirred for 10 minutes by mechanical stirring method. After stirring, use a hot air blower to dry the jelly. The efficiency of the hot air drying water is 7 kg / h. The particle size obtained after air drying is sprayed on the Ti-6Al-4V titanium alloy as a plasma spraying material. During the plasma spraying process, argon and a small amount of hydrogen are used as the main plasma spraying gas, and helium is used as a protective gas. After spraying, the sample was subjected to hot rolling treatment. The starting temperature was 300°C. After the sample was kept at 300°C for 30 minutes, it was rolled. There were 3 passes in total, and the total rolling ratio was 10%. The sample was placed in a tube furnace for annealing treatment under a hydrogen atmosphere at an annealing temperature of 500°C, and th...
Embodiment 2
[0019] Add 10% water and 3.5% polyacrylic acid dispersant to the prepared enamel powder to make it into a jelly. The volume fraction of solid matter in the jelly is 30%. The jelly is stirred for 15 minutes by mechanical stirring method. After stirring, use a hot air blower to dry the jelly. The efficiency of the hot air drying water is 7 kg / h. The particle size obtained after air drying is sprayed on the Ti-6Al-4V titanium alloy as a plasma spraying material. During the plasma spraying process, argon and a small amount of hydrogen are used as the main plasma spraying gas, and helium is used as a protective gas. After spraying, the sample was hot-rolled. The rolling temperature was 450°C. After the sample was kept at 450°C for 30 minutes, it was rolled. There were 4 passes in total, and the total rolling ratio was 15%. The sample was placed in a tube furnace for annealing treatment under a hydrogen atmosphere at an annealing temperature of 600°C, and the sample was cooled with ...
Embodiment 3
[0021] Add 10% water and 3.5% polyacrylic acid dispersant to the prepared enamel powder to make it into a jelly. The volume fraction of solid matter in the jelly is 35%. The jelly is stirred for 20 minutes by mechanical stirring method. After stirring, use a hot air blower to dry the jelly. The efficiency of the hot air drying water is 7 kg / h. The particle size obtained after air drying is sprayed on the Ti-6Al-4V titanium alloy as a plasma spraying material. During the plasma spraying process, argon and a small amount of hydrogen are used as the main plasma spraying gas, and helium is used as a protective gas. After spraying, the sample was hot-rolled. The rolling temperature was 550°C. After the sample was kept at 550°C for 30 minutes, it was rolled. There were 4 passes in total, and the total rolling ratio was 20%. The sample was placed in a tube furnace for annealing treatment under a hydrogen atmosphere, the annealing temperature was 650°C, and the sample was cooled with ...
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