Method for manufacturing CuCr electrical contact materials through copper surface electrolytic chrome in sintering mode
An electrical contact material, electrolytic chromium technology, applied in the field of materials, can solve the problems of reducing production costs, shortening production time, etc., and achieve the effects of reducing production costs, convenient control, and low cost
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Embodiment 1
[0046] 1. Surface activation treatment of copper mesh
[0047]Select a 200-mesh copper mesh with a copper wire diameter of Ф0.24mm, put the copper mesh into a HCl solution with a concentration of 10wt% for 5 minutes, take it out, wash it with distilled water, and then soak it in acetone for 1min. After taking out, use absorbent cotton Wipe clean, and then rinse with distilled water, the copper mesh can be used as the cathode for electrolytic adsorption of chromium;
[0048] 2. Electrolytic adsorption chromium treatment
[0049] The electrolyte composition is: chromic anhydride (CrO 3 ) 240g / L, sulfuric acid (H 2 SO 4 ) 2g / L, chromium mist inhibitor 0.1g; the anode material is lead plate, the cathode material is copper mesh, the area ratio of anode and cathode is 2:1; the heating rod is used to heat the plating tank, and the temperature of the electrolyte in the plating tank is kept at 60℃ , pass the current, keep the cathode current density 60A / dm 2 , electroplating for 2...
Embodiment 2
[0056] 1. Copper wire surface activation treatment
[0057] Select a copper wire with a diameter of Ф0.1mm, put it in a HCl solution with a concentration of 30wt% for 1 minute, take it out, wash it with distilled water, soak it in acetone for 5 minutes, wipe it with absorbent cotton, and then rinse it with distilled water. The copper wire is wound on the aluminum plate as the cathode for electrolytic adsorption of chromium;
[0058] 2. Electrolytic adsorption chromium treatment
[0059] The electrolyte composition is: chromic anhydride (CrO 3 ) 260g / L, sulfuric acid (H 2 SO 4 ) 2.2g / L, chrome mist inhibitor 1g; anode material is lead-antimony plate, cathode material is copper wire wound on aluminum plate, anode and cathode area ratio 1:3; use resistance heating rod to heat the plating tank to maintain electrolysis The liquid temperature is 30°C; the current is passed in, and the cathode current density is kept at 30A / dm 2 , after electroplating for 0.5h, the copper wire w...
Embodiment 3
[0066] 1. Surface activation treatment of copper mesh
[0067] Select a 20-mesh copper mesh with a copper wire diameter of Ф0.5mm, put the copper mesh into a HCl solution with a concentration of 20wt% for 3 minutes, take it out and wash it with distilled water, then soak it in acetone for 3 minutes, and wipe it with absorbent cotton after taking it out. Clean, and then rinse with distilled water, it can be used as a cathode for electrolytic adsorption of chromium;
[0068] 2. Electrolytic adsorption chromium treatment
[0069] The electrolyte composition is: chromic anhydride (CrO 3 ) 250g / L, sulfuric acid (H 2 SO 4 ) 2.1g / L, chromium mist inhibitor 0.5g; the anode material is lead-tin plate, the cathode material is copper mesh, the area ratio of anode and cathode is 3:1; the heating rod is used to heat the plating tank, and the temperature of the electrolyte is kept at 45℃; Pass the current, keep the cathode current density 60A / dm 2 , after 1h of electroplating, the copp...
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