Method for producing band steel with different target thicknesses along longitudinal direction using hot continuous rolling mill set
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United States of America Patent
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Oct 24, 2017
Issued Date -
N/A
app pub date -
Nov 30, 2012
filing date -
Oct 31, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to a method for producing hot rolled strip steel, especially the producing method of hot rolled strip steel with multiple target thicknesses in the longitudinal direction. It is a method to produce the strip steel with different target thicknesses in the longitudinal direction by using a hot continuous rolling mill. In this method, the first equal-thickness section of the strip steel is controlled with the conventional thickness control strategy, while other equal-thickness sections and the transition section between equal-thickness sections are controlled with the variable-thickness control strategy. Under the variable-thickness control strategy, the length of the first section of strip steel, the variation of thickness target value, the rolling stability and the spacing between stands are combined to determine the stand participating in the variable-thickness control, and calculate the roller gap value, as well as the time and speed of the variation of roller gap, thus achieving the producing control of strip steel with different target thicknesses in the longitudinal direction. The present invention utilizes the length of the first equal-thickness section and the variation of different target thicknesses and other related factors to determine the stands participating in the control, and then distributes the load variation among the stands, thus effectively avoiding the influence on the rolling stability due to imbalance of second flow, so that the produced strip with variable thickness in different sections in the longitudinal direction meet the user's requirements.
First Claim
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International Classification(s)
- 2012 Application Filing Year
- B21B Class
- 176 Applications Filed
- 147 Patents Issued To-Date
- 83.53 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B21B Class
- 0 % this patent is cited more than
- 8 Age
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