High-temperature rolling processing method and processing device, and application of high-temperature rolling processing device
AssigneePeking University Nanchang Innovation Institute
InventorChi Tan
Life of this patent
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Abstract
A high-temperature rolling machining method and processing device, and an application of the high-temperature rolling processing device, the device includes a force loading assembly, a rolling assembly, a temperature control assembly, and a carrying assembly; in the high-temperature rolling machining method, an accurate high-temperature rolling operation can be carried out on the surface of a test piece made of brittle materials such as ceramics by using the processing device, and the mechanical properties and electrical properties of the test piece after rolling treatment are remarkably improved, the thermal conductivity is remarkably reduced, and at the same time, crack initiation in the processing process is avoided.
Claims15
A high-temperature rolling processing method, comprising the following steps:
- heating a to-be-processed test piece to a preset temperature, maintaining the preset temperature, using balls of which the hardness is greater than that of the to-be-processed test piece at the temperature, applying a preset pressure on a to-be-processed surface of the test piece, and periodically and repeatedly rolling the test piece;
- rolling the test piece for a preset time, and then cooling the test piece to room temperature to obtain a test piece with a residual compressive stress layer on the surface;
- and
- plastically deforming the test piece at the preset temperature without crack initiation, wherein the preset pressure and preset time are suitable for a thickness of the residual compressive stress layer to be formed on the surface of the test piece.
A method of using a high temperature rolling processing device, the high temperature rolling processing device comprising:
- a force loading assembly, a rolling assembly, a temperature control assembly and a carrying assembly,
- wherein the temperature control assembly comprises a temperature control box and a bearing platform, and the bearing platform is arranged in an inner cavity of the temperature control box;
- the carrying assembly comprises a carrying vehicle arranged along a horizontal direction, a transmission rod and a first motor, one end of the transmission rod is connected with a side face of the carrying vehicle, the other end of the transmission rod penetrates through a side wall of the temperature control box and then is connected with a rotating shaft of the first motor, and the first motor is used for controlling the carrying vehicle to slide along the horizontal direction;
- the force loading assembly is arranged along a vertical direction, the bottom of the force loading assembly penetrates through the temperature control box and then is connected with the rolling assembly, and the bottom of the rolling assembly abuts against a to-be-processed test piece on the carrying vehicle for carrying out high-temperature rolling on the to-be-processed test piece;
- and
- wherein the high-temperature rolling processing device is applied to surface toughening of ceramic or semiconductor materials and improvement on electrical and thermal properties of the materials.
Dependencies are inferred from the claim text.