Weakly basic metal working lubricant

Abstract

The invention provides a weakly basic metal working lubricant. The traditional high-temperature metal working lubricant easily causes black or white pollution. The weakly basic metal working lubricantdisclosed by the invention comprises the following raw materials in percentage by weight: 15-70% of sodium borate, 10-50% of sodium phosphate and 0.5-30% of soluble boron oxide; water in an amount of10-15 times of the weight of the materials is added into the previous raw materials; the pH value of the lubricant is 7-9. The weakly basic metal working lubricant disclosed by the invention has excellent high-temperature lubricating property, does not cause any adverse effect on steel tube performance and steel tube surface quality, does not cause any environmental pollution, and is an environment-friendly lubricant capable of fully protecting the production environment.

Description

technical field [0001] The invention relates to a weakly basic metal processing lubricant, in particular to an environment-friendly high-temperature lubricant for metal thermoplastic processing and a use method thereof, belonging to the category of liquid lubricants. Background technique [0002] Mandrel lubrication is an essential process condition when continuous rolling steel pipe units produce seamless steel pipes. The quality and performance of mandrel lubricants will directly affect the quality of steel pipes, safe production and environmental protection. At present, most of the lubricants used at home and abroad use graphite powder as the basic lubricating material, and then add other inorganic compounds and organic compounds. Such as Chinese Patent Publication No. are CN1405286A, CN1493674A and Japanese Patent Laying-Open Publication No. 2-51592. Since graphite powder is used as the basic lubricating material, there are the following problems: ① When rolling stainle...

AI Technical Summary

Problems solved by technology

Since graphite powder is used as the basic lubricating material, there are the following problems: ① When rolling stainless steel or high-alloy steel, the inner surface of the steel pipe may be carburized, and chromium will precipitate along the grain boundary, reducing the corrosion resistance of the steel pipe; ②Graphite fine powder has excellent electrical conductivity, and the pollution of graphite fine powder in the process of using lubricant will cause safety hazards to electrical equipment and instruments;

[0003] The environment brings black pollution

The Chinese Patent Publication No. is CN1243150A, CN1845982A, Japanese Patent Application No. 64-16894, and Japanese Patent Application No. 5-171165. Although these lubricant technologies disclosed in the Japanese Patent Application Publication No. 5-171165 do not use graphite micropowder as the lubricating base material, they use natural or artificial mica and leech instead. Stone, talcum powder, bentonite and other fine powders are used as lubricating base materials, but this is only to replace black pollution with white pollution.

In the technologies disclosed in the above patents, the basic lubricating materials are water-insoluble solid micropowders, and their lubricating properties belong to the category of solid lubrication. Therefore, the presence of solid micropowders inevitably causes black or white pollution to the environment.