Prediction method for flaw length of Cu-Al sandwich rolling-bonded band head

Abstract

The invention provides a prediction method for the flaw length of a Cu-Al sandwich rolling-bonded band head. The prediction method comprises the following steps: obtaining the parameters of a prediction model for the flaw length of the Cu-Al sandwich rolling-bonded band head, and according to the parameters of the prediction model for the flaw length of the Cu-Al sandwich rolling-bonded band head, obtaining the thickness of a rolling-bonded initial band material, the half-thickness of the rolling-bonded initial band material, the thickness of an initial upper-layer band material, the half-thickness of an initial inner-layer band material and the half-thickness of a rolling-bonded final band material; obtaining a pass reduction rate according to the thicknesses of a rolling bonding outlet and a rolling bonding inlet; and obtaining the predicted flaw length of the band head through establishing the prediction model for the flaw length of the Cu-Al sandwich rolling-bonded band head and substituting the parameters of the prediction model for the flaw length of the Cu-Al sandwich rolling-bonded band head into the prediction model for the flaw length of the Cu-Al sandwich rolling-bonded band head. Therefore, the flaw length of the bonded band head can be predicted; as a result, the yield can be greatly increased, and unnecessary cutting losses are reduced.

Description

Technical field: [0001] The invention relates to the field of defect prediction of copper-aluminum sandwich rolling composite tape head, in particular to a method for predicting defect length of copper-aluminum sandwich rolling composite tape head. Background technique: [0002] In industrial aluminum-copper-aluminum sandwich rolling and compounding, because the aluminum strip is softer than the copper strip, the aluminum strip will be deformed first and will extend along the rolling direction to a certain extent. The position is between the two layers of aluminum strips, and it is not in direct contact with the upper and lower rollers, so the copper strips will have a certain relative slip before compounding, which requires prediction of the length of the compounded head defects. [0003] However, in actual production, most of the prediction methods used are empirical formulas without theoretical basis, which may reduce the output or cause unnecessary cutting loss to the ac...

AI Technical Summary

Problems solved by technology

[0003] However, in actual production, most of the prediction methods used are empirical formulas without theoretical basis, which may reduce the output or cause unnecessary cutting loss to the accuracy prediction of the composite tape head

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