A Method of Using Cartridge Logic Valve to Realize Hydraulic Control of Pulling and Straightening

Abstract

The invention relates to a method for achieving tension leveling hydraulic control through an inserting type logical valve, and belongs to the technical field of steel making continuous casting. According to the technical scheme, a tension leveling hydraulic control function unit is composed of stacking type logical valve integration blocks, and the tension leveling hydraulic control unit of one-piece flow of a continuous casting machine is composed of a pressure reducing unit, a blank pulling unit and a blank disengaging unit. Due to the fact that basic assemblies of a cartridge valve are standard parts and a valve element of the cartridge valve is of a conical valve element structure, the cartridge valve is high in reliability, in other words, the anti-clamping capability of the cartridge valve is greatly higher than that of an ordinary sliding valve, and the self dirt removing capability is achieved. Meanwhile, the circulation capability of the cartridge valve is much higher than that of the ordinary sliding valve, and due to the fact that assemblies of the cartridge valve are inserted in the hydraulic integration blocks, the structure of a hydraulic integration system composedof the cartridge valve is greatly reduced; and a basic unit is of a conical valve structure, inner leakage is extremely small, the response performance is good, and high-speed switchover can be conducted.

Description

technical field [0001] The invention relates to a method for realizing tension-leveling hydraulic control by using a plug-in logic valve, and belongs to the technical field of steelmaking and continuous casting. Background technique [0002] The continuous casting machine is an important smelting equipment in the steelmaking plant, and the tension leveling machine is the core process equipment in the continuous casting process. The molten steel is poured into the tundish through the ladle, and then diverted from the tundish to each crystallizer, and cast into a billet. The tension leveler pulls out billets with different specifications and cross-sections; the hydraulic control method of tension leveler is an important part of the tension leveler. At present, the hydraulic control of the stretching and leveling machine mainly adopts the continuous casting of integrated blocks and plate valves for control, so that the hydraulic control valve group of the stretching and levelin...

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Problems solved by technology

At present, the hydraulic control of the stretching and leveling machine mainly adopts the continuous casting of integrated blocks and plate valves for control, so that the hydraulic control valve group of the stretching and leveling machine will be made very large. development, especially the emergence of ten-machine ten-stream and twelve-machine twelve-stream continuous casting machines, the hydraulic system of tensioning and leveling using the original continuous casting machine tensioning and leveling hydraulic control method is bound to be very large, and the plate valves are generally used The diameter is not large, the flow rate is small, and the response speed is slow. The existing hydraulic control method of the tension leveler cannot adapt to the development of continuous casting technology.

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