An experimental method for testing the amount of metal deformation inside a billet during rolling

Abstract

The invention provides an experiment method for testing metal deformation quantity inside a billet in the rolling process and belongs to the technical field of physical material experiment methods.The experiment method includes the steps that two prefabricated screw holes provided with threads are formed in the experimented billet, are located on the central line of the upper surface of the experimented billet and are vertically through, prefabricated bolts are fixed to the prefabricated holes, the material for the prefabricated bolts 2 is same as the material for the experimented billet 1, the experimented billet is heated to reach a predetermined experimented temperature, the experimented temperature is 500-1300 DEG C, at least one pass of rolling deformation is performed on an experimental hot-rolling mill, the total deformation quantity of the experimented billet in the thickness direction is not smaller than 5% of the original thickness of the experimented billet, the metal deformation quantities of a central layer and a surface layer of the billet subjected to a hot-rolling experiment are E1 = L1 - L and E2 = L2 - L.The experiment method has the advantage of effectively improving the experimental accuracy.

Description

technical field [0001] The invention belongs to the technical field of material physics experiment methods, in particular to an experiment method for testing the amount of metal deformation inside a billet during rolling. Background technique [0002] In the hot rolling production process of steel plate, the steel billet is compressed in the thickness direction and stretched in the length and width directions through multiple rolling passes to produce steel plates with specific thickness and width and specific mechanical properties. The amount of deformation of the metal inside the billet during the rolling process directly affects the microstructure and mechanical properties of the finished steel plate. The well-known experimental method for studying the deformation of the metal inside the billet during the rolling process is to make uniformly distributed deep holes on the side of the billet as marks for the position of the metal inside the billet. The relative position be...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an experimental method for testing the amount of metal deformation inside the billet during the rolling process, which solves the problem of low accuracy of the experimental results of the traditional experimental method

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