Metal surface modification method through emulsion jet
A metal surface and emulsion technology, applied in the field of metal material surface processing, can solve the problems of large investment and limitations, achieve uniform jet bubbles, solve cleaning problems, and have good use effects
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Embodiment 1
[0012] Example 1: Surface modification of ordinary carbon steel. Translucent emulsified oil is used, its pH value is 10, its kinematic viscosity is 50 at 40°C, and it is not more than 1 when corroding 45 steel for 24 hours. At room temperature, according to the ratio of 10% emulsified oil and 90% water, the emulsion is prepared, and the pH value of the emulsion is adjusted to 10 with anhydrous sodium carbonate, the average viscosity is 1.5cSt, and the lower critical Reynolds coefficient is less than 2320; Turn on the emulsion jet machine, control the jet pressure to 50MPa, the diffusion angle of the cavitation bubbles generated by the jet is 6°, the distance from the jet outlet of the nozzle to the surface to be processed is 30cm, and the hardness and fatigue life of the processed surface are significantly improved.
[0013] The emulsion jet machine is a hydraulic pump; the emulsified oil is a commercially available product.
Embodiment 2
[0014] Example 2: Surface modification of SiMn alloy steel. Translucent emulsified oil is used, its pH value is 8, its kinematic viscosity is 45 at 40°C, and the corrosion of 45 steel is not more than 1 in 24 hours. At room temperature, the emulsified oil is 6%, and the ratio of water is 94%. Prepare the emulsion, use anhydrous sodium carbonate to adjust the pH value of the emulsion to 8, and the average viscosity is 1.1cSt. Turn on the emulsion jet machine and control the jet flow The pressure is 60MPa, the diffusion angle of the cavitation bubbles generated by the jet is 5°, and the distance from the jet outlet of the nozzle to the surface to be processed is 25cm, and the hardness and fatigue life of the processed surface are significantly improved. Others are the same as in Example 1.
Embodiment 3
[0015] Example 3: Surface modification of ordinary carbon steel. Translucent emulsified oil is used, its pH value is 7, its kinematic viscosity is 35 at 40°C, and it is not more than 1 when corroding 45 steel for 24 hours. At room temperature, the emulsified oil is 3%, water is 97% ratio, the emulsified liquid is prepared, the pH value of the emulsified liquid is adjusted to 7 with anhydrous sodium carbonate, and the average viscosity is 1.0cSt. Open the emulsified liquid jet machine, control The jet pressure is 20MPa, the diffusion angle of the cavitation bubbles generated by the jet is 25°, the distance from the jet outlet of the nozzle to the surface of the part to be processed is 15cm, the hardness of the processed surface is improved, and the rust layer is removed. Others are the same as in Example 1.
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