Cross dual-pull representation heating test platform and method

Abstract

The invention provides a cross dual-pull representation heating test platform and method. The cross dual-pull representation heating test platform comprises an induction heating temperature control system, a stretching control system and a strain measurement system, wherein the induction heating temperature control system comprises a metal plate, an induction coil, a temperature sensor and an induction heating power supply, an adjustable induction heating power supply is connected with the induction coil, the induction coil is arranged in parallel at one side of the metal plate, the metal plate is heated by an effect of the induction coil to provide a hot environment, the metal plate is arranged in parallel at an upper side of a bidirectional cross stretching device, and the temperature reaches a set value by adjusting a current value of the induction coil. By the cross dual-pull representation heating test platform, the mechanical property and the formation performance of the materialof a test plate under equal dual-stretching and under different loading proportions at a high temperature can be accurately tested.

Description

technical field [0001] The disclosure belongs to the field of characterization testing of mechanical properties and formability of metal plates, and in particular relates to a cross double-drawing characterization heating test platform and method. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Cross double drawing can obtain the mechanical properties, yield criterion and forming limit of the plate under equal double tension and different strain paths, while the mechanical properties, yield criterion and forming limit of the plate under equal double tension and different strain paths at different temperatures have a great influence on the It is particularly important to guide the sheet forming process. [0004] According to the knowledge of the inventors, currently, the platforms capable of testing the bidirectional cross tensile propert...

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Problems solved by technology

[0004] According to the knowledge of the inventors, currently, the platforms capable of testing the bidirectional cross tensile properties of metals at different temperatures are generally composed of a hydraulic or mechanical biaxial tensile device and a heating furnace, and the heating process is carried out in the heating furnace. Tensile tests at different temperatures, especially high temperature tests, due to the high temperature air in the closed furnace and the refraction of light by the glass, the non-contact strain measurement technology cannot be applied well, which affects the test accuracy, and thus cannot obtain accurate results. Sheet mechanical properties and formability

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