Alkenyl succinic acid polyethylene glycol phosphate ester additive agent as metal rolling oil and preparation method

Abstract

An alkenyl succinic acid polyethylene glycol phosphate ester additive agent as metal rolling oil comprises the following components: alkenyl maleic anhydride with appropriate alkyl, polyethylene glycol with appropriate degree of polymerization, phosphorus pentoxide and a catalyst, and is characterized by comprising the steps of: reacting the alkenyl maleic anhydride with appropriate alkyl and the polyethylene glycol with appropriate degree of polymerization under the action of the catalyst to generate alkenyl succinic acid mono-polyethylene glycol ester; and reacting the alkenyl succinic acid mono-polyethylene glycol ester and the phosphorus pentoxide to generate alkenyl succinic acid polyethylene glycol phosphate ester and bis-alkenyl succinic acid polyethylene glycol phosphate ester. The invention has the distinct advantages that the additive agent has emulsification, lubrication and extreme pressure properties and oil coke resistance function; the formulation technology of the metal rolling oil becomes simple, a large quantities of steel plates with large deformation values above 90 percent can be rolled at a high speed by adding 5-20 percent of the additive agent of the invention into the metal rolling oil, and the surfaces of the rolled steel plates have no scratch.

Description

technical field [0001] The invention relates to the field of lubricants, in particular to a metal rolling oil alkenyl succinic acid polyethylene glycol phosphate additive with emulsifying performance, lubricating performance, extreme pressure performance and oil coke resistance function and a preparation method. Background technique [0002] When cold-rolling steel sheets or strips, they must go through various processes such as pickling-cold rolling-cleaning-annealing-levelling-inspection. Generally, during cold rolling, the reduction rate of the rolled material is 40% to 90%, and the rolling load is also a high load of 800 tons to 1500 tons. Under such high load conditions, the rolling oil can act as a lubricant to prevent the direct contact between the roll and the material being rolled. The composition of general metal rolling oil is based on grease, mineral oil or fatty acid synthetic fat, etc., adding additives such as antirust agent, extreme pressure agent, oili...

AI Technical Summary

Problems solved by technology

But now the rolling oil using emulsifier is often controlled by changing the type and amount of emulsifier to control the metastability of the emulsion to adjust the amount of oil attached to the surface of the steel plate, and then control the rolling lubricity, but the metal rolling of this system The lubricating performance of the oil cannot meet the high lubricity required by the rolling of extremely thin steel plates with large deformation and large width, resulting in scratches on the surface of the steel plate, and even quality accidents such as broken strips of the steel plate

Therefore, it is necessary to improve and control the rolling lubricity by changing, adding lubricants, the type and amount of extreme pressure additives, because the addition of lubricants and extreme pressure additives will increase oil coke and affect the annealing cleanliness of the steel plate Therefore, it is necessary to adjust the type and amount of anti-oil coke additives. It is also necessary to re-adjust the type and amount of emulsifiers to adjust the metastability of the emulsion, making the additive formulation system of the entire metal rolling oil very It is complicated, and the iron generated during the rolling process adheres to the contact parts of the emulsion such as the strip steel, the roll system, and the inside of the rolling mill frame, which will cause the so-called rolling dirt, which will affect the post-work such as cleaning and annealing. At the same time, it will cause various problems such as dirt on the rolling mill and its surroundings, and damage to the operating environment.