A kind of preparation technology of anti-corrosion and wear-resistant chromium-based card clothing and its products
A wear-resistant chromium-based needle and a preparation technology, applied in textiles and papermaking, fiber treatment, deburring devices, etc., can solve problems such as general wear resistance, uneven coating thickness, and unstable performance of card clothing , to achieve good flatness
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[0067] The preparation method of the electroplating solution comprises the following steps: uniformly stirring chromium compound, sulfuric acid, additives, acid mist inhibitor, alcohol with 1-4 carbon atoms, and water to obtain the finished product.
[0068] The empty chromium plating process is as follows: the heating temperature is 50-60°C under circulating stirring; the plating speed is 15-23μm / h, and the current density is 5-25A / dm 2 , the time is 5-10min;
[0069] Preferably, the empty chromium plating process is as follows: the heating temperature is 50-54°C under circulating stirring; the plating speed is 15-21 μm / h, and the current density is 8-12A / dm 2 , the time is 5-10min;
[0070] Preferably, the empty chrome plating process is as follows: the heating temperature is 52°C under circulating stirring; the plating speed is 20 μm / h, and the current density is 10A / dm 2 , the time is 7min;
[0071] The electroplating solution composition for plating the composite wear-...
Embodiment 1
[0095] A preparation process for anti-corrosion and wear-resistant chromium-based card clothing, comprising the following steps:
[0096] (1) Install the card clothing; the specific operation is to install the card clothing on a suitable fixture, and the working surface of the saw blade must not be covered.
[0097] (2) Degrease and pickle the card clothing; the specific operation is to mix the degreasing agent with water at a volume ratio of 1:3, and soak for 5 hours at a temperature of 80°C; then carry out countercurrent ultrasonic washing; In the aqueous solution of sulfuric acid, soak for 30s at room temperature, and then carry out countercurrent ultrasonic water washing.
[0098] (3) Activation; the activated solution is an aqueous sulfuric acid solution with a volume concentration of 1.0%, the time is 2 min, and the temperature is 25° C.
[0099] (4) Anti-engraving; the anti-etching process is: chromic anhydride 215g / L, sulfuric acid 2g / L, temperature 52°C, current dens...
Embodiment 2
[0113] A preparation process for anti-corrosion and wear-resistant chromium-based card clothing, comprising the following steps:
[0114] (1) Install the card clothing; the specific operation is to install the card clothing on a suitable fixture, and the working surface of the saw blade must not be covered.
[0115] (2) Degrease and pickle the card clothing; the specific operation is to mix the degreasing agent with water at a volume ratio of 1:3, and soak for 5 hours at a temperature of 80°C; then carry out countercurrent ultrasonic washing; In the aqueous solution of sulfuric acid, soak for 30s at room temperature, and then carry out countercurrent ultrasonic water washing.
[0116] (3) Activation; the activated solution is an aqueous sulfuric acid solution with a volume concentration of 1.0%, the time is 2 min, and the temperature is 25° C.
[0117] (4) Anti-engraving; the anti-etching process is: chromic anhydride 215g / L, sulfuric acid 2g / L, temperature 52°C, current dens...
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