Method of producing stainless steel band for air injection steel reed

Abstract

The invention discloses a method for producing a kind of stainless steel which is used for jet norm. It manufactures with cold-rolled stainless steel strip with a thickness of 1.0~1.5mm to achieve the stainless steel through semi-finished billets rolling, solution treatment, finished rolling, skim handling, degreasing and drying, straightening, and tensile stress annealing.

Description

technical field [0001] The invention relates to a method for producing a steel strip. Specifically, it is a production method for processing stainless steel strips for air-jet reeds on air-jet textile machines. Background technique [0002] It is known in the textile machine manufacturing industry that the air-jet reed is the core component of the air-jet textile machine, and the stainless steel belt for the air-jet reed is the key to making the air-jet reed. Traditional air-jet steel reeds are all made of 65Mn and other grades of steel strips that are sequentially processed by a four-roll cold rolling mill for preliminary rolling, intermediate annealing, finished cold rolling, and quenching and tempering. Although adopting this method can produce the steel band that air-jet reed is used. But there are following problems: [0003] First, because the traditional production method only has several steps of preliminary rolling, intermediate annealing, finished cold rolling a...

AI Technical Summary

Problems solved by technology

[0003] First, because the traditional production method only has several steps of preliminary rolling, intermediate annealing, finished cold rolling and quenching and tempering, it is difficult to control the hardness of the steel strip produced, and the hardness range is large, and it can only be controlled at Rockwell hardness HRC42 ~48, equivalent to Vickers hardness HV413~480, therefore, in the process of making air-jet reed, it is easy to deform, easy to break, low utilization rate and high production cost;

[0004] The second is that in the traditional production method, the steel strip blanks used are 65Mn and other grades of steel strips, and the metallographic structure of 65Mn and other grades of steel strips is sorbite or troostite, and the strength is low, so they cannot be used for rolling. Reed strips with a thickness of less than 0.3mm are limited in scope of application;

[0005] The third is that in the traditional production method, the steel strip blanks used are 65Mn and other grades of steel strips, and the steel strips of 65Mn and other grades are easily corroded under high-temperature and high-speed airflow

Therefore, the reed steel belt produced by the traditional method is reprocessed into an air-jet reed, not only the quality is difficult to guarantee, but also the service life is not long;

[0006] Fourth, due to the traditional production method, four-roll mills are used for preliminary rolling, and the thickness tolerance can only be controlled within ±0.02-±0.03mm, which makes the thickness accuracy low, and it is difficult to guarantee the same strip difference;

[0007] Fifth, due to the traditional production method, the quenching and tempering process is adopted without stretching and straightening process, and the flatness of the rolled reed steel strip is low, which can only be controlled to be equal to or less than 5mm;

[0008] Sixth, because the traditional production method only has several steps of preliminary rolling, intermediate annealing, finished product cold rolling and quenching and tempering, the surface roughness Ra of the rolled reed steel strip can only be controlled at 0.4-0.8 μm, and the surface quality poor