Method for thermoelectric dip plating of machine tool component

Abstract

The invention discloses a method for thermoelectric dip plating of a machine tool component. By mass percent, 65%-70% of zinc, 25%-30% of aluminum, 3%-5% of silicon and 0.2%-2% of nickel are weighed. The method comprises the specific dip plating steps that firstly, after being washed through clean water, the machine tool component is immersed through boric acid and then washed through the clean water again, and the machine tool component is naturally cooled after being placed in a drying machine to be dried; secondly, the machine tool component is placed in a heating furnace to be subjected to oxidation carbon removing, and after being naturally cooled, the machine tool component is placed in a reduction furnace to be subjected to residue removing treatment; and thirdly, the zinc, the aluminum, the silicon and the nickel are melted in a plating pond in sequence, and after the zinc, the aluminum, the silicon and the nickel are completely melted, the machine tool component treated in the second step and protected by the reducing atmosphere is immersed in the plating pond, and after a power source is started for conducting thermoelectric dip plating, the machine tool component obtained after dip plating is fed into a cooling furnace with the reducing atmosphere to be cooled. The method has the beneficial effects that a plating layer has density and combining tightness; the silicon is further added, and occurrence of a fragile layer during plating layer growth is avoided; and due to adding of the nickel, fluidity of a plating solution is better, and the plating solution is more uniform.

Description

technical field [0001] The invention relates to the technical field of immersion plating, in particular to a method for thermoelectric immersion plating of machine tool components. Background technique [0002] The materials used to manufacture machine tools are mainly various steel materials. During the long-term use of steel materials, they are susceptible to continuous erosion by water vapor and acidic atmosphere in the environment, which seriously affects the working efficiency and precision of the machine tool itself. Therefore, a layer of protective layer should be covered on the outer layer of some machine tool components. The protective layer is usually composed of a corrosion-resistant and wear-resistant metal layer, and the covering method is usually hot-dip plating, electroplating, etc. [0003] However, there are many problems in the general coating of a single metal, such as not dense enough, not tightly combined, etc., and the general treatment process cannot m...

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Problems solved by technology

[0003] However, there are many problems in the general coating of a single metal, such as not dense enough, not tightly combined, etc., and the general treatment process cannot meet the requirements of the machine tool itself.