Continuous casting machine for stainless compound steel plate strip blank

Abstract

The invention relates to a stainless steel clad plate billet conticaster. It belongs to a continuous casting device in the art of metallurgical industry. The device can be characterized in that: it comprises three synchronous circulating mobile steel band crystallizers A, B and C, which are Y- type equipped, the lower cooling steel band 2 of crystallizer A being common with the right-side cooling steel 2c of the crystallizer C, and the lower cooling steel band 2b of crystallizer B being common with the left-side cooling steel 2d of the crystallizer C. After the strand being forged by from multigroup flexible guiders, multigroup steam- water spray devices and traction roller which are under the crystallizer C, the clad plate billet is aligned to horizontality by a blending guider and a smoothing roll, and then is sent to shearer to be sheared into a definite length or sent to continuous rolling mill to roll down. The merit is characterized in that: it improves the production efficiency of the conticaster, and guarantees the quality of strand and rolled metal.

Description

technical field [0001] The invention relates to a stainless steel composite strip billet continuous casting machine, which belongs to near-net shape continuous casting equipment in the technical field of metallurgy industry. The continuous casting machine can not only continuously cast a single metal material thin slab strip, but also can continuously cast a composite slab strip of different metal materials, and is especially suitable for continuous casting of stainless steel composite slab strips. Background technique [0002] The continuous casting machine is an important equipment in the continuous casting and continuous rolling process of the modern metallurgical industry. Its structural characteristics and working principle not only determine the working efficiency and production cost of the continuous casting machine, but also directly affect its product quality. The continuous casting machines used in the original continuous casting process are generally divided into ...

AI Technical Summary

Problems solved by technology

[0003] 1. Due to its structural characteristics, the fixed continuous casting machine can only produce a single metal material billet, and it is impossible to produce a composite material strip billet, and there is frictional resistance between the billet and the crystallizer, which not only limits the billet casting speed , it also shortens the service life of the crystallizer, and it is necessary to add a vibrating mechanism and a dummy device to cast billets smoothly

[0004] 2. The wheel-type continuous casting machine should be said to have solved the problem of frictional resistance between the casting slab and the mold, and the casting speed has also been significantly increased when casting thin slab strips. However, this continuous casting machine only uses one mold to work. It is impossible to produce blanks of different metal composite plates

[0006] a. Since the continuous casting machine only uses one belt mold for operation, that is, there is no other crystallizer to control the thickness of the composite molten steel casting and crystallization process, it can only be determined by the molten steel casting speed and the cooling strength of the steel strip, so the thickness of the composite layer Uneven, uneven surfaces are unavoidable

[0007] b. The cooling steel strip of the continuous casting machine is clamped between the crystal shell and the casting roll and moves continuously, because there is a rolling force between the shell and the casting roll, and this rolling force increases sharply with the thickening of the shell , which will inevitably cause deformation and wear of the cooling steel strip under the action of rolling force, thus directly affecting the service life of the cooling steel strip

[0008] c. Since the leakage of the molten steel casting side of the continuous casting machine is sealed with a fixed baffle, in order to seal the leaking molten steel, the fixed baffle must be close to the side of the cooling steel belt, which will inevitably cause mutual friction and wear between the two Severe steel leakage accidents are prone to occur; in addition, when casting molten steel, the temperature of the fixed baffle is bound to be lower than the molten steel, which makes it inevitable that the molten steel will be "bonded" layer by layer on the inside of the fixed baffle, and it will form after long-term operation. Very large crystallization "nodules", which directly affect the casting slab and cannot be carried out smoothly in severe cases

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