A Simulation Method for Layered Flow Behavior of Reactive Continuous Casting Mold Flux
A continuous casting mold flux, stratified flow technology, applied in teaching models, instruments, educational appliances, etc., can solve the problems of incomplete reaction of steel slag, changes in the physical and chemical properties of mold flux, and quality problems of casting blanks, and achieves simple structure and controllability. Simple and flexible process
Active Publication Date: 2019-02-05
NORTHEASTERN UNIV LIAONING
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Problems solved by technology
However, when casting steels with strong reactivity between molten steel and mold slag (such as high-manganese and high-aluminum steel), the mold slag reacts with reducing elements in the molten steel to change the composition of the mold slag, resulting in a change in the physical and chemical properties of the mold slag. Large changes have occurred, and the original functions of controlling billet uniform lubrication and heat transfer cannot be realized, resulting in serious billet quality problems and even steel breakout accidents
[0003] Previous research generally adjusts the reactivity of mold slag and molten steel by changing the composition of mold slag, and studies the lubrication and heat transfer behavior of mold slag under laboratory conditions, ignoring the fluidity of mold slag in the actual casting process As well as the incomplete reaction of steel slag, the current research results cannot effectively guide production practice
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[0021] The present invention will be further described below in conjunction with the drawings and embodiments.
[0022] Such as figure 1 As shown, a method for simulating the layered flow behavior of reactive continuous casting mold slag, the method adopts a continuous casting mold mold slag layered flow behavior simulation device, the device mainly includes a main control computer 1, a programmable controller 2, a main body Bracket 3, oil tank 4, plastic slide 5, endless belt used to simulate the blank shell 6, runner 7, oil tank 8, stepper motor No. 1, 9, connecting rod 10, eccentric wheel 11, stepper motor No. 2 12. Triangular organic glass column 13, organic glass vibrating plate 14 and gap 15. The oil conveying tank 4 is fixedly installed on the upper part of the main body bracket 3, and the oil conveying tank 4 is provided with a right opening 41 and a lower right opening 42. The right part of the right opening 41 passes through a triangular plexiglass column 13 that simula...
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Abstract
The invention discloses a method for simulating the layered flow behavior of reactive continuous casting mold slag. The method adopts a continuous casting mold mold slag layered flow behavior simulation device, which includes an annular belt that simulates a billet shell and a triangular organic glass column that simulates a slag ring. , a high-strength transparent plexiglass vibrating plate that simulates the copper plate of the continuous casting mold; two media with different colors and viscosity that are incompatible with each other are selected to represent liquid mold slag with different degrees of reaction with the molten steel; the two media are used according to the Add a certain volume ratio to the oil transfer tank one after another; after the two media are obviously stratified in the oil transfer tank and the liquid level is stable, start the two stepper motors at the same time to ensure that the two media fill the gap and flow downward; observe the two media The inflow pattern in the oil delivery groove and gap was confirmed, and the influence of the inflow pattern on uniform lubrication and heat transfer in the crystallizer was studied. The invention can directly observe the stratified flow phenomenon of mold powder with different physical properties, and has certain guiding significance for actual production.
Description
Technical field [0001] The invention belongs to the technical field of iron and steel metallurgy continuous casting mold simulation application technology, and specifically relates to a method for simulating the layered flow behavior of reactive continuous casting mold powder. Background technique [0002] The lubrication and heat transfer of the mold are the two most critical factors for controlling the quality of the cast slab and improving the productivity of continuous casting. One of the important functions of continuous casting mold slag in the mold is to form a slag film in the gap between the mold and the slab shell, control the heat transfer of the casting slab to the mold, and ensure the surface quality of the continuous casting slab. The slag film should lubricate the casting billet as much as possible to ensure the smooth continuous casting process. The thickness of the slag film, the uniformity of its distribution and its solidification structure have an extremely i...
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IPC IPC(8): G09B25/02
CPCG09B25/02
Inventor 孟祥宁朱苗勇杨杰杨青山周建川
Owner NORTHEASTERN UNIV LIAONING