Aluminum alloy semisolid remelting and heating control method and device based on infrared temperature measurement
An infrared temperature measurement and heating control technology, applied in temperature control, computer control, general control system, etc., can solve the problems of poor precision, damage to the surface of the workpiece, and unfavorable industrial applications, so as to promote development, simplify process steps, and reduce manufacturing costs. cost effect
Inactive Publication Date: 2012-04-25
ZHEJIANG UNIV
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Problems solved by technology
[0013] (1) For the control of the liquid phase ratio of the semi-solid remelting heating of the metal billet, the open-loop method is currently also used in the industry, but the accuracy is poor;
[0014] (2) In order to carry out closed-loop precise control of the liquid phase ratio, contact measurement technology is often used, which requires drilling each workpiece and destroying the surface of the workpiece, which is not conducive to industrial applications;
[0015] (3) The non-contact temperature measurement method for semi-solid billet remelting heating is still immature and needs further development and improvement
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[0038] Such as image 3 , Figure 4As shown, the present invention includes a microcomputer 1, an infrared thermometer 2, an induction heating coil 3, a refractory brick 5 and an induction heater 6; the induction heating coil 3 is placed on the refractory brick 5, and an aluminum alloy is housed in the induction heating coil 3 The semi-solid blank 4, the infrared thermometer 2 is aligned at the center of the surface of the aluminum alloy semi-solid blank 4, the infrared thermometer 2 communicates with the microcomputer 1 through the USB port, and one end of the induction heater 6 is connected to the induction heating coil 3, The other end of the induction heater 6 is connected to the microcomputer 1, and the heating control program running in the microcomputer 1 is based on the temperature signal received, and through calculation, the real-time output control signal is imported into the induction heater 6 through the D / A conversion card, so as to achieve Closed-loop control o...
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The invention discloses aluminum alloy semisolid remelting and heating control method and device based on infrared temperature measurement. An infrared temperature measurer is aligned with the center position of the surface of a semisolid blank and is communicated with a microcomputer through a USB port; one-line receiving and processing of temperature data are realized in the computer by software program, a temperature change curve is displayed in real time, and a control signal is output to an inductance heater. Aiming at an aluminum alloy semisolid blank, a multi-step method is adopted forremelting and heating, the temperature change curve is monitored by using the infrared temperature measurer, and the purpose of accurately controlling blank liquid is achieved by using blank phase change characteristics. The invention realizes non-contact measurement control on a semisolid remelting and heating phase ratio of the aluminum alloy blank, promotes the semisolid metal thixoforming technology, avoids the troubles of drilling and the like caused by contact temperature measurement, lowers the equipment cost, and improves the process efficiency.
Description
technical field [0001] The invention relates to metal material forming technology, in particular to a method and device for controlling semi-solid remelting heating of aluminum alloy based on infrared temperature measurement. Background technique [0002] In the early 1970s, scientists from the Massachusetts Institute of Technology discovered the rheological properties of metals in a semi-solid state for the first time, and developed metal semi-solid forming technology, which is between solid metal forming and liquid metal forming. Combining the advantages of casting and plastic forming technology, it has significant advantages such as high efficiency and energy saving. It is considered to be one of the most promising near-net shaping technologies in the 21st century. In recent years, semi-solid metal forming technology has been widely concerned in scientific research and industrial production, and its research results have been applied to a large extent in the processing of...
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IPC IPC(8): G05D23/27G05B15/02
Inventor 梅德庆姚喆赫周红华钱淼陈子辰
Owner ZHEJIANG UNIV