Process for optimizing nickel-plated appearance of ultra-wide stainless steel plate

Abstract

The invention discloses a process for optimizing the nickel-plated appearance of an ultra-wide stainless steel plate and belongs to the technical field of nickel plating. The process for optimizing the nickel-plated appearance of the ultra-wide stainless steel plate comprises the following steps: step 1, degreasing; step 2, immersion washing with hot water; step 3, washing with sulfuric acid; step4, spray washing with pure water; step 5, nickel pre-plating; step 6, corrective nickel plating; step 7: general nickel plating; step 8, cleaning and immersion washing; step 9, post-treatment; step 10, ultrasonic washing; step 11, blow-drying; step 12, oven-drying; and step 13, auxiliary collecting. By the adoption of the process, the nickel and phosphorus alloying process can be added between the pre-plating operation and the plating operation on a general nickel-plated layer; accordingly, not only can the plated layer deposition speed be improved, but also a lattice of the nickel-plated layer can be remarkably improved, the lattice being compact in structure can be refined, and the plated layer porosity can be reduced; and then, the appearance uniformity and glossiness of the general nickel-plated layer can be guaranteed, the plated layer density, uniformity and bonding strength can be improved, and the corrosion-resistant property can be improved.

Description

technical field [0001] The invention relates to the technical field of nickel plating, in particular to an appearance optimization process for nickel plating of ultra-wide stainless steel plates. Background technique [0002] The density of nickel is 8.907g / cm 3 , melting point 1450°C, nickel has high strength, good plasticity, high hardness, good wear resistance, strong forgeability, easy processing, good corrosion resistance, especially good alkali corrosion resistance, high temperature resistance, and small contact resistance. In the electroplating industry, the production volume of nickel plating is second only to zinc plating. [0003] Bright nickel plating on stainless steel---The nickel layer is a silver-white metal with a slight yellow light to improve the hardness, wear resistance and leveling of the surface, and to avoid corrosion caused by contact potential difference with stainless steel. Its hardness is higher than that of copper, Zinc, tin, cadmium, gold, sil...

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Problems solved by technology

[0004] However, the above-mentioned nickel plating processes are prone to appearance problems when facing ultra-wide stainless steel plates. The wider the stainless steel plate, the larger the size, and the uniformity and stability of the appearance of the nickel plating layer of the traditional nickel plating process The more difficult it is to achieve, the poorer the density and uniformity of the coating, the lower the bonding force, and the surface gloss is not uniform enough

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