Detecting method for cold rolled steel strip inner stress

A detection method and technology of strip steel shape, applied in the direction of measuring force, measuring device, instrument, etc., can solve the problems of high cost, difficult operation, and high equipment requirements, and achieve the improvement of punching forming performance, simple operation method, and low equipment requirements. Effect
CN1474170AInactive Publication Date: 2004-02-11SHANXI TAIGANG STAINLESS STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANXI TAIGANG STAINLESS STEEL CO LTD
Publication Date
2004-02-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The method of detecting internal stress of cold rolled steel strip includes the following steps: cutting 500-1500 mm long detection sample in the stable rolled part of the steel strip; cutting two ends of the sample to ensure the effective length; cutting the sample into several sample pieces of specified size while maintaining the sample piece order; measuring the lengths of the sample pieces and describing the change of the sample pieces in coordinate curves; converting the length change of the sample pieces into the stress of the sample pieces based on Hooke's law; and drawing stress distribution curves in width of the rolled steel strip. The present invention can describe the internal stress distribution of steel strip and is significant in guiding the improvement of steel strip form.
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Description

technical field

[0001] The invention belongs to the technical field of quality control and detection of rolled steel, and in particular relates to a detection method for the shape internal stress of cold-rolled strip steel. Background technique

[0002] In the case of large residual plate shape internal stress inside the material, different changes will be formed on the plate surface, such as middle wave, rib wave, edge wave, etc. The plate shape internal stress inside the material can be qualitatively known through plate shape changes, but most The internal stress of the plate shape inside the material is small and will not be reflected in the change of the plate shape. Certain detection methods are required to accurately understand the size and distribution of the plate shape internal stress inside the material.

[0003] At present, in terms of the requirements and detection of the internal stress of the cold-rolled steel strip, there is no clear regulation in the national...

Claims

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