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A Modeling Method for Determining the Optimum Mandrel Limiting Speed ​​in the Production Process of Seamless Steel Tube

A technology of limiting speed and production process, which is applied in the modeling field of determining the optimal mandrel limiting speed in the production process of seamless steel pipes, and can solve the complicated calculation of the maximum mandrel limiting speed, which is unfavorable for the steel pipe rolling industry and other issues to achieve the effect of improving service life and product quality, avoiding production risks, and reducing mandrel wear

Inactive Publication Date: 2017-07-11
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the problem that the calculation of the maximum value of the mandrel limit speed is complicated in the prior art, which is not conducive to the use in the steel pipe rolling industry, the present invention proposes a modeling method for determining the optimum mandrel limit speed in the production process of seamless steel pipes

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  • A Modeling Method for Determining the Optimum Mandrel Limiting Speed ​​in the Production Process of Seamless Steel Tube
  • A Modeling Method for Determining the Optimum Mandrel Limiting Speed ​​in the Production Process of Seamless Steel Tube
  • A Modeling Method for Determining the Optimum Mandrel Limiting Speed ​​in the Production Process of Seamless Steel Tube

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Embodiment 1

[0033] Embodiment 1: The specific implementation steps of the present invention are illustrated by taking the model for setting the maximum limit speed of the mandrel when the outer diameter of the mandrel is 187 mm as an example.

[0034]In actual production, the factors affecting the maximum set value of the mandrel limit speed include the length of the blank pipe and the exit speed of the end frame of the steel pipe. It can be known from process knowledge and experience that the longer the length of the blank pipe, the smaller the maximum limit speed of the mandrel should be set, and the greater the exit speed of the steel pipe, the greater the maximum limit speed of the mandrel should be set. According to the process setting and on the premise of ensuring smooth production, the calculation process is as follows:

[0035] Step 1: Taking the batches whose rolling plan is 235mm in capillary outer diameter, 16mm in wall thickness, 199.54mm in barren tube in outer diameter, 5.8...

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Abstract

The invention discloses a modeling method for determining the optimal mandrel limit speed in the production process of seamless steel pipes. Firstly, the production parameters in the rolling process of a certain batch of steel pipes of a certain specification are obtained: the length of the empty pipe, the setting The exit velocity of the steel pipe and the maximum value of the actual mandrel limit velocity; use the least squares linear fitting method to fit the function relationship between the mandrel limit velocity and the length of the empty pipe; then use the least squares linear fitting method to fit In the actual production process, the functional relationship between the mandrel limit speed and the steel pipe outlet speed under any certain length of the empty pipe is obtained; finally, the optimal mandrel limit speed model is established by using the linear weighting method, and the optimal mandrel limit speed is calculated. speed. The invention has the characteristics of simple calculation, convenience and strong practicability, and is suitable for guiding the setting of the mandrel limit speed in the rolling regulation of the continuous rolling process of the seamless steel pipe.

Description

technical field [0001] The invention relates to a modeling method for determining the optimum limiting speed of mandrels in the production process of seamless steel pipes. Background technique [0002] Steel pipe is an economical steel and an important product in the iron and steel industry, usually accounting for about 10% of the total steel, known as "industrial blood vessel". As one of the important raw materials for national economic construction, seamless steel pipes are widely used in petroleum, electric power, chemical industry, coal, machinery, military industry, aerospace and other industries. [0003] The "Twelfth Five-Year Plan" of the State Council pointed out that in the face of problems such as the urgent need to upgrade the variety and quality of the iron and steel industry, the slow progress in layout adjustment, the strengthening of energy, environment, raw material constraints, and weak independent innovation capabilities, it is necessary to expand varietie...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 陈鑫吴敏曹卫华朱明杰
Owner CENT SOUTH UNIV
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