Nickel-phosphorus alloy plating solution for chemical plating of truck tire mold surface and chemical plating method

Abstract

The invention discloses a nickel-phosphorus alloy plating solution for chemical plating of a truck tire mold surface and a chemical plating method. The nickel-phosphorus alloy plating solution is adopted so as to effectively form a chemical plating layer on a cast steel material surface, thereby remarkably improving the wear resistance, the corrosion resistance and the hardness of the truck tire mold surface and enhancing the surface color uniformity and the appearance quality of a processed tire. The nickel-phosphorus alloy plating solution, which takes water as a solvent, comprises the following components by weight: 20-40 g / l of nickel sulfate, 15-30 g / l of sodium hypophosphite, 2-7 g / l of sodium citrate, 11-18 g / l of sodium acetate and 0.001-0.003 g / l of thiourea, wherein the pH value of the nickel-phosphorus alloy plating solution is 4.2-4.8. By using the nickel-phosphorus alloy plating solution, a nickel-phosphorus plating layer can be formed on the truck tire mold surface of the cast steel material, thus the wear resistance, the corrosion resistance and the hardness of a mold are remarkably improved.

Description

technical field [0001] The invention relates to a nickel-phosphorus alloy plating solution applied to the chemical plating on the surface of the truck tire mold of steel materials and a method for applying the plating solution to carry out the chemical plating on the surface of the truck tire mold, belonging to the field of polymer materials and industrial chemical treatment. Background technique [0002] Tire vulcanization mold is an important process equipment used in the tire vulcanization process. Its quality directly affects the external quality of the tire, and even affects the service life and safety of the tire. The more common active molds for truck tires (usually all-steel wire radial tires), due to the unreasonable use and storage of the molds, the surface of the cast steel mold is prone to chemical and electrochemical interactions with the surrounding medium to form destructive effects, making the tires Mold surface corrosion. As a result, it is easy to cause th...

AI Technical Summary

Problems solved by technology

The more common active molds for truck tires (usually all-steel wire radial tires), due to the unreasonable use and storage of the molds, the surface of the cast steel mold is prone to chemical and electrochemical interactions with the surrounding medium to form destructive effects, making the tires mold surface corrosion

As a result, it is easy to cause the appearance of tires with pockmarks and uneven defects, which will reduce the quality of tires, and mold repairs will also cause large economic losses.

[0003] At present, the surface treatment methods for truck tire molds are nitriding and chrome plating, but in the nitriding treatment of truck tire molds, the nitriding depth of the mold is often shallow, the hardness is uneven, the surface is oxidized, and the nitrided layer is not dense, resulting in surface appearance. Defects such as mesh or needle-like nitrides; after chrome plating, the coating will fall off and the coating will have poor wear resistance, which seriously affects the service life of the mold

[0004] In addition to the above-mentioned treatment methods, there are currently no records and disclosures of treatment technologies for the surface of other cast steel material truck tire molds at home and abroad.

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