Lubricating oil supply facility and lubricating oil supply method

Abstract

A lubricating oil supply facility for supplying lubricating oil to a mill roll (20) of a rolling mill for a plate-like metallic material (M) comprises: spray nozzles (1a, 1b) for granulating or atomizing lubricating oil together with gas and ejecting the mixture toward the mill roll; lubricating oil supply devices (2, 3, 4) for supplying the lubricating oil to the spray nozzles; and gas supply devices (5, 6) for supplying the gas to the spray nozzles. The amount of supply of the lubricating oil from side spray nozzles among the spray nozzles is set to be greater than the amount of supply of the lubricating oil from the center spray nozzle among the spray nozzles. Also, the amount of supply of the lubricating oil from the spray nozzles located between the center spray nozzle and the side spray nozzles is set to be less than or equal to the amount of supply of the lubricating oil from the side spray nozzles and greater than or equal to the amount of supply of the lubricating oil from the center spray nozzle. As a result of the configuration, the occurrence of nonuniform wear and surface roughening of the mill roll in the axial direction thereof is minimized.

Description

technical field [0001] The present invention relates to a rolling process in the manufacturing process of steel products such as thin steel strips and thick plates, and more particularly to a supply facility and method for lubricating oil used in the hot rolling process. Background technique [0002] In the hot rolling process in the manufacturing process of steel products such as thin steel strips and thick plates, for the purpose of reducing the load on the rolls used as processing tools, suppressing wear and sticking, and reducing defects associated with them Lubricated rolling is performed for various purposes such as securing a good surface quality of the product. [0003] In the hot rolling process, the following methods are mainly implemented: the method of spraying and supplying the mixture of water and lubricating oil to the roll by the water spray method (for example, refer to Non-Patent Document 1); A semi-solid lubricant such as a method of blowing off and makin...

AI Technical Summary

Problems solved by technology

However, depending on the operating conditions of each rolling process, it may be installed only on any one of the upper and lower work rolls and backup rolls.

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