Vertical continuous non-muffle bright annealing equipment for stainless steel band

Abstract

The invention discloses vertical type continuous non-muffle bright annealing equipment for stainless steel bands, which comprises a non-muffle annealing furnace (16), a cooling device and a transmission system, wherein, the non-muffle annealing furnace (16) comprises a plurality of electrothermal bodies (37) arranged in a hearth (36) and is a vertical type, the hearth (36) of the non-muffle annealing furnace (16) is an externally-sealed integral hearth, the inside of the hearth (36) is provided with a plurality of carrier rollers (18) which are made of fire-resisting material and are used to support the stainless steel bands, the carrier rollers (18) are linearly arranged at an upper row and a lower row in the vertical type non-muffle annealing furnace (16), the stainless steel bands (21)are alternatively distributed vertically and horizontally in the hearth (36), and the electrothermal bodies (37) are fully distributed on the inner wall of the hearth (36). The structure can greatly improve the output of the annealing of the stainless steel bands, guarantee the quality of the stainless steel bands, and greatly reduce energy consumption.

Description

technical field [0001] The invention relates to a stainless steel annealing equipment of assembly line operation type, in particular to a vertical continuous muffle-free bright annealing equipment for stainless steel strips. Background technique [0002] According to common sense, the cold-rolled stainless steel strip must be bright annealed before it can meet the user's requirements. [0003] Due to the different requirements for furnace material, insulating gas, cooling section structure, etc., the conventional annealing equipment for common steel strips or other metal strips is not suitable for bright annealing of stainless steel strips. [0004] The bright annealing equipment for stainless steel strips in the prior art generally adopts an electrothermal muffle annealing furnace, that is, the electric heating body is closely attached to the outer wall of the muffle, that is, a closed furnace. After the furnace is heated, the stainless steel strip is heated by the heat rad...

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Problems solved by technology

[0006] ① Because it is used in the form of a horizontal single furnace, and according to common sense, the overall length of the annealing furnace body in the prior art is generally 12 meters. If it is longer, it will become soft due to the high temperature (1000-2000 °C) in the furnace The stainless steel strip sags longitudinally in the middle, which affects the normal progress of bright annealing of the stainless steel strip, and the tension machines at both ends of the annealing furnace cannot pull the stainless steel strip too tightly, otherwise the stainless steel strip will be thinned and the quality of the stainless steel strip will be affected.

In the actual process, it happens from time to time that the electric heating element is damaged due to the deflection of the steel strip, which not only increases the equipment cost and maintenance cost, but also affects the normal progress of the annealing production process.

[0008] ③Because the stainless steel strip to be annealed is not cleaned before the stainless steel strip enters the muffle-free bright annealing furnace, the oil residue and dust residue left on the surface of the stainless steel strip in the previous process will be removed during the high-temperature annealing process and the subsequent rapid cooling process. Consolidation on the surface of the stainless steel strip seriously affects the quality of the stainless steel strip

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