Lubricating oil for cold reduction of tubes and preparation method thereof

Abstract

The invention discloses lubricating oil for cold reduction of tubes and a preparation method thereof, belonging to the field of water-soluble lubricating oil and a preparation technology thereof. The lubricating oil is composed of the following raw materials in parts by weight: 25-65 parts of base oil, 25-75 parts of chlorinated paraffin, 0.2-3 parts of vegetable oil, 2-25 parts of surfactant, 1-5 parts of antioxidant and 2-6 parts of antirust agent. The preparation method comprises the following steps of: firstly adding 25-65 parts of base oil and 25-75 parts of chlorinated paraffin into a container with a stirring device and a heating device, and stirring in a heating state; adding 0.2-3 parts of vegetable oil, 1-5 parts of antioxidant and 2-6 parts of antirust agent, and continuously heating and stirring; adding 2-25 parts of surfactant, and heating and stirring; and cooling and discharging to obtain a finished product. The lubricating oil disclosed by the invention is harmless to environment and has excellent extreme-pressure abrasion resistance; and the process flow is simple, and the technological requirements are not harsh, thus the need for industrial production amplification can be met.

Description

technical field [0001] The invention belongs to the technical field of water-soluble lubricating oil and its preparation, in particular relates to a lubricating oil used for cold rolling of pipes, and also relates to a preparation method of the lubricating oil. Background technique [0002] In the process of cold rolling of seamless tubes such as stainless steel, alloy steel, titanium alloys and nickel-based alloys, lubricating oil is usually used for lubrication, and the tubes need to be cleaned after cold rolling to remove cold rolling. The oil stains attached to the inner and outer walls of the pipes. Because the oil product of lubricating oil in the prior art has deficiency, so usually use mixed acid such as the mixed acid of nitric acid and hydrofluoric acid to carry out degreasing in the degreasing operation after cold rolling, deficiency is: due to degreasing time Long, need 3-10h, therefore affect production efficiency, especially, in the process of degreasing with ...

AI Technical Summary

Problems solved by technology

Because the oil product of lubricating oil in the prior art has deficiency, so usually use mixed acid such as the mixed acid of nitric acid and hydrofluoric acid to carry out degreasing in the degreasing operation after cold rolling, deficiency is: due to degreasing time Long, it takes 3-10 hours, so it affects production efficiency, especially, in the process of degreasing with mixed acid, it is easy to cause over-acid phenomenon in pipes such as titanium alloy pipes, which affects the quality of pipes

In addition, whether mixed acid or acidic or alkaline cleaning agent is used to remove oil, there are disadvantages of high cost of oil removal and great environmental pollution.

[0003] As known in the industry, the lubricating oil used for cold-rolled pipes should not only have the ideal extreme pressure and anti-wear properties, but also need to take into account the easy-to-clean performance, and should also have a long-lasting cycle life. Although the published Chinese patent documents It can be found in the technical information of cold rolling lubricants, but not limited to the patented technologies listed below are difficult to meet these requirements