Low-odor rolling oil for steel cold rolling and use method of rolling oil

Abstract

The invention discloses low-odor rolling oil for steel cold rolling. The rolling oil comprises the following components in percentage by mass: 0-30% of natural oil, 50-90% of synthetic lubricating grease, 0.8-4.5% of a surfactant, 2.0-6.5% of an extreme-pressure antiwear agent and 0.5-1.5% of an antioxidation additive. An emulsion prepared by using the rolling oil can effectively reduce the smellcaused by the natural oil with stink in the rolling oil, and the odor of the rolling oil is controlled to be at a very low level through reducing use of active sulfur compounds.

Description

technical field [0001] The invention relates to rolling oil, in particular to a low-odor rolling oil for cold rolling of steel and its application method. Background technique [0002] In the production of modern cold rolling mills, usually in the production of cold rolling technology, a complex emulsion system is used to spray a certain amount of emulsion on the roll gap and the surface of the strip. After the emulsion enters the rolling deformation zone, it first adheres to the The surface of the roll and the strip forms a thin lubricating oil film for lubrication, and the water can take away the heat of deformation and friction during the rolling process to play a role in cooling. The so-called cold rolling emulsion is a chemical product obtained by mixing 1-3% rolling oil and 97-99% water according to mass percentage. [0003] The cold rolling emulsion is sprayed in large quantities during production (usually >20m 3 / h), under the action of a large amount of heat fr...

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Problems solved by technology

[0006] ZL201510362873.1, a cold-rolled emulsion odor gas purification device and method, this technology uses technology to filter or centrifugally collect the odor-rich rolling oil and other substances in the emulsion to remove the gas with low odor, Then, the catalyst rich in iron and manganese is used to further decompose the odorous chemical substances in the gas. Professional catalyst, the overall technical and economic efficiency is low, it is not suitable for large-scale promotion and use

[0007] ZL201610173105.7, a water-based metalworking lubricant containing nano-molybdenum disulfide and its preparation method, mainly uses various water-soluble lubricating compounds, such as triethanolamine, aqueous sodium polyacrylate, silane coupling agent and sodium diacetate and other substances, and then use nano-molybdenum disulfide powder as a cold-rolling lubricant. Since this technology completely uses water-soluble substances, it can avoid the odor problem of traditional cold-rolling emulsions. However, due to the use of nano-molybdenum disulfide in such substances Molybdenum sulfide particles, which will affect the subsequent strip coating performance after the strip remains, so it is difficult to apply and promote

[0008] ZL201280012958.1, an artificially synthesized compound that effectively masks odors, mainly 1-(2-hydroxyphenyl)-3-(pyridin-4-yl)propan-1-one / salt, etc., although such substances have Good odor masking effect, but the price is relatively expensive, and it will significantly affect the lubricity of rolling oil when used in cold rolling oil, so it is not practical

[0009] To sum up, the odor elimination of cold-rolled emulsion is mainly through the post-treatment of the discharged gas, and for various chemical reagents that can eliminate the odor of cold-rolled emulsion, there will be high cost in the cold-rolling process. , problems that affect production performance, there is no special elaboration on the optimization of the components of rolling oil itself to reduce the generation of peculiar smell