Self-lubricating passivation solution and hot galvanizing self-lubricating coating steel sheet coated thereby

Abstract

The invention discloses a self-lubricating passivation solution and a hot galvanizing self-lubricating coating steel sheet coated thereby. The self-lubricating passivation solution is formed by modified solid lubricants, a film forming matter, a film forming additive, an accelerant, a pH modifier, an organic solvent and deionized water through compounding. The solid content after compounding is 15-25%, and the modified solid lubricants are modified nanometer MoS2 and modified nanometer teflon particles. According to the total weight of 1000g, the self-lubricating passivation solution comprises the following components: 10-20g / kg of modified nanometer MoS2, 10-20g / kg of modified nanometer teflon particles, 80-120g / kg of film forming matter, 10-30g / kg of film forming additive, 5-15g / kg of the accelerant and the balance of mixed solution of the organic solvent and the deionized water; and the pH value is adjusted to 3-6 by the pH modifier. The hot galvanizing self-lubricating coating steel sheet coated by the self-lubricating passivation solution comprises a hot galvanizing substrate and a self-lubricating coating attached to the hot galvanizing substrate. The self-lubricating passivation solution does not contain Cr<6+> and other environmentally harmful substances and has environmental protection property, corrosion resistance, wear extreme pressure resistance as well as coating and self-lubrication properties.

Description

technical field

[0001] The invention relates to a self-lubricating coating for passivating hot-dip galvanized steel sheets. The invention also relates to galvanized self-lubricating coated steel sheets coated with self-lubricating coatings, especially to hot-dip galvanized self-lubricating coatings steel plate. Background technique

[0002] Most of the hot-dip galvanized materials need to undergo a certain deformation process during use, especially in the stamping process, it is necessary to add lubricating oil to the mold to reduce the friction between the mold and the steel plate, and prevent the steel plate from cracking or other defects during the deformation process. After the stamping parts are formed, it is necessary to use detergent to remove the oil stains on the surface of the parts. The detergent usually contains trichloroethane and Freon. These substances not only damage the atmospheric ozone layer, but also have a damaging effect on the environment. For this rea...