Method for online detecting harmful vibration of strip steel in shearing process of disc shear

A technology of shearing process and detection method, applied in the direction of length measuring device, metal rolling, manufacturing tools, etc., can solve the problems of difficulty in field promotion, unrealistic monitoring, increase of field equipment maintenance cost and human resource cost, etc., and achieve stability The effect of cut and run

Active Publication Date: 2014-07-23
BAOSHAN IRON & STEEL CO LTD
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  • Claims
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Problems solved by technology

Adopting this method requires adding additional equipment and deploying full-time testers on site, resulting in an increase in on-site equipment maintenance costs and human resource costs, making on-site promotion very difficult
In addition, due to the limitation of on-site equipment layout space, most units do not have space to install vibration testing instruments, which also makes this kind of monitoring impossible

Method used

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  • Method for online detecting harmful vibration of strip steel in shearing process of disc shear
  • Method for online detecting harmful vibration of strip steel in shearing process of disc shear
  • Method for online detecting harmful vibration of strip steel in shearing process of disc shear

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Embodiment Construction

[0032] Now, according to specific embodiments of the present invention, the application process of the technical solution will be further described.

[0033] In order to further illustrate the on-line detection method of the harmful vibration of the steel strip in the disk shearing process of the present invention, in this embodiment, the steel strip whose incoming material grade is AQ1060H5 and whose specification is 2.02mm×888mm is selected for on-line detection, such as figure 1 Shown:

[0034] In step 1, collect the basic process parameters of the front looper of the disc shear in the pickling mill, including the set value of the front looper tension of 19.2MPa, and the strip speed of 80m / min;

[0035] In step 2, the width of the collected steel strip is 888mm, the thickness is 2.02mm, the steel type is T4, and the signal sampling period is 50ms;

[0036] In step 3, select consecutive 10 sampling periods T 1 , T 2 ,...,T 10 For analysis, the sampling time of each cycle...

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Abstract

The invention discloses a method for online detecting the harmful vibration of strip steel in the shearing process of a disc shear. The method comprises the steps that an existing tension real-time collection system of a disc shear area is utilized, the vibration frequency and vibration amplitude of the strip steel are analyzed online and quantitatively according to the real-time tension data of the disc shear in the shearing process when the strip steel of the specific specification and steel type is sheared under specific tension and at specific speed, corresponding vibration restraining measures are adopted according to the data analysis result starting with speed adjustment, and the stable operation and shearing of the strip steel are guaranteed.

Description

technical field [0001] The invention relates to a control method in the strip steel production process, in particular to a strip steel vibration detection method. Background technique [0002] Disc shears are one of the key equipment in acid rolling mills. The stability of the shearing process directly affects the quality of strip products, and in the production process of disc shears, strip vibration has always been a problem on site. Practical problems. When the strip steel vibrates seriously during the working process of the disc shear, it will not only cause the shearing quality to drop, burrs and other defects, but also induce the strip steel to deviate and asymmetrical edge trimming, and cause the downstream acid rolling unit to The ability to control the edge section of the finished strip is reduced, causing quality objections. [0003] Since the vibration of strip steel often does not occur suddenly, but gradually deteriorates from small to large and finally loses ...

Claims

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Application Information

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IPC IPC(8): B21B38/00B21B15/00
Inventor 郑涛王康健
Owner BAOSHAN IRON & STEEL CO LTD
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