Steel pipe drawing emulsified oil with ultrahigh lubricating property and preparation method thereof

Abstract

The invention relates to a steel pipe drawing emulsified oil with ultrahigh lubricating property and a preparation method thereof. The method comprises the following steps: palm oil and machine oil N68 are first poured into a reaction kettle at the rotational speed of 50 to 120 rotations per minutes, heated and agitated; when temperature reaches 60 DEG C to 80 DEG C, oil-soluble nano Fe3O4 (2nm to50nm), nitrogen-containing borate, zinc dialkylphosphorodithiloate, butyl stearate, C8-C10 mixed alcohol, sodium dodecyl benzene sulfonate and dimercaptothiodiazole are then sequentially added into the reaction kettle, and agitation is continued for 60 to 100 minutes while temperature is kept; afterwards, when temperature is decreased to 70 DEG C, sorbitan monooleate Span 80, nonyl phenol polyoxyethylene ether, triethanolamine, methylsilicone oil and quintozene are added, the rotational speed of an agitator is adjusted to 30 rotations per minutes and agitation is kept for 30 to 60 minutes, heating is then stopped, agitation is continued until room temperature is reached, and thereby the welded pipe drawing emulsified oil which is yellowish-brown, transparent and uniform is obtained. The product disclosed by the invention is easy to degrade, the anticorrosive period is longer, the annealing detergency is better, and moreover, environment pollution can be reduced.

Description

Technical field [0001] The invention relates to the technical field of lubricants and is used for lubrication in the cold drawing process of various steel pipes such as stainless steel and high-temperature alloys, especially welded pipes. Specifically, it is a steel pipe drawing emulsified oil with ultra-high lubricating performance and the same The preparation method can prevent the welded pipe from being locally overheated during the cold drawing process to cause weld cracking, oxidation and discoloration, and can ensure the steel pipe drawing emulsified oil of the finished surface brightness. Background technique [0002] The drawing process is a typical plastic processing method in which the cross-sectional area of ​​the metal processing material is reduced through the die core under the drawing action to obtain high-precision, high-finish wire or pipe. In the drawing process, due to the large amount of metal deformation and the continuous production of new friction surfaces,...

AI Technical Summary

Problems solved by technology

At present, the steel pipe drawing lubricating oil has the problem of poor lubrication and cooling effect. After the steel pipe has been drawn many times, a large amount of metal powder is bonded to the surface of the drawn pipe and the edge of the hole core, resulting in a sharp increase in the friction coefficient between the two. Large, not only sharply reduce the surface finish and brightness of the drawn workpiece, but also aggravate the wear of the mold and affect the service life of the mold

In recent years, welded steel pipes have developed rapidly due to the advantages of simple production process, high production efficiency, low cost, high precision, uniform wall thickness, and arbitrary size. However, welded pipes do not have matching lubricating oil, and often Occurrence of quality problems of weld cracking due to local overheating of the steel pipe or mold

In addition, the currently used drawing lubricating oil is not easy to clean, which will have a negative impact on the heat treatment and annealing quality of the drawn steel pipe.

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