Double Coiler Speed ​​Switching and Tension Construction Method for Cold Tandem Mill

Abstract

The invention discloses a double coiling speed switching and tension establishing method for a cold continuous mill. Cold rolling is used for achieving the coiling speed switching and stable tension transition to serve as the target function, a double coiling speed switching setting method is established, and a new adaptive cold continuous mill double coiling speed switching method is provided. Through setting of the coiling speed reference value, the actual speed value and the switching value and the maintaining value of the work manner switching point, the tension control precision during cold rolling coil replacing is improved; a setting method for establishing the transition process from tension to the normal production tension is provided; and through the method input, the smooth transition of speed switching of a double coiling machine can be achieved, impacts on tension are reduced, and stability and precision in the rolling process are improved. Meanwhile, original control equipment can be utilized in the method, maintaining is easy, meanwhile, the technology introduced fund input is saved, and the needs for increasingly strict thickness quality of cold rolling and the increased market competitiveness are met.

Description

technical field [0001] The invention belongs to the technical field of iron and steel production control, in particular to a double-coil speed switching and tension-building method of a cold tandem rolling mill. Background technique [0002] The incoming materials for the tandem cold rolling mill are mainly hot-rolled thin plates, and the final products are used in industries such as home appliances, automobiles and construction. For general users, cold-rolled strip steel is the rolled product they directly face, so they have high requirements for production continuity. The Corrsel coiler is arranged at the exit of the cold tandem mill. The two coils are arranged symmetrically at 180° on the wheel, and the coils rotate around their respective mandrels. The mandrels are respectively driven by two hollow shafts with a common axis. The reel is driven by a rotating hydraulic cylinder to achieve expansion and contraction; the large ring gear on the outer circumference of the tak...

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Problems solved by technology

Due to the complex model relationship, the regression process is slow and regression abnormalities often occur, so its control accuracy is not high

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