A real-time observation device for welding temperature field of UHF pulse TIG welding
A technology for welding temperature and real-time observation, applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of difficulty in obtaining multi-point and even full-field temperatures at the same time, poor real-time performance, and large workload, reducing multiple times. The effect of repeated experiments
Active Publication Date: 2018-02-02
BEIHANG UNIV
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Problems solved by technology
[0005] The traditional method of testing the welding temperature field is to use thermocouples and XY function recorders. This method has poor real-time performance, low precision, and heavy workload. It is difficult to obtain the temperature of multiple points or even the entire field at the same time, and it is destructive to the weldment.
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[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0036] see figure 2 , image 3 , Figure 3A As shown, a real-time observation device suitable for ultra-high frequency pulse TIG welding welding temperature field of the present invention, the device includes a control cabinet, welding temperature field memory, infrared thermal imager 10, observation movement mechanism 1, workpiece pose Adjusting table 3, welding torch movement mechanism 2, welding torch 6, conductive plate 40, positioner mechanism 4, ultra-high frequency pulse TIG welding welding power supply, the welding temperature field memory can be a computer, used for infrared thermal imager 10 The collected temperature information is stored to facilitate subsequent use of the temperature information. Ultra-high frequency pulse TIG welding welding power supply output pulse current rising edge, falling edge change rate di / dt ≥ 50A ultra-high frequen...
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The invention discloses a real-time observation device suitable for a welding temperature field of ultrahigh frequency pulse TIG (Tungsten Inert Gas) welding. The real-time observation device comprises a welding temperature field storage device, an observation motion mechanism, an infrared thermal imager and a workpiece position adjusting table, wherein the infrared thermal imager is arranged on the observation motion mechanism; the observation motion mechanism is connected with a welding gun motion mechanism; the workpiece position adjusting table is arranged between a current-conducting plate and a position changer mechanism. The real-time observation device for the welding temperature field, which is provided by the invention, can be applied in the ultrahigh frequency pulse TIG welding and can perform temperature measurement by using a non-contact method. According to the real-time observation device disclosed by the invention, the observation of the welding temperature field can be carried out in real time and temperature information of the whole welding field can be obtained at one time.
Description
technical field [0001] The invention relates to a device for observing thermophysical phenomena in the welding process, in particular to a device for real-time observation of the welding temperature field in the welding process of ultra-high frequency pulse TIG welding. Optimal parameters for obtaining high-quality welds. Background technique [0002] Ultra-high frequency pulse TIG (Tungsten Inert Gas Welding) welding technology is an advanced welding process method, which can achieve a current conversion frequency above 20kHz and has an ultra-fast current edge change rate (di / dt≥50A / us) . Studies have shown that adding the modulation of high-frequency pulse current to the free arc can effectively reduce the porosity sensitivity of the weld, refine the grain, significantly improve the mechanical properties of the welded joint, and greatly improve the comprehensiveness of the welded structural parts of the aircraft. performance, has important engineering significance and br...
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IPC IPC(8): B23K9/095
CPCB23K9/0953B23K9/173B23K9/32
Inventor 从保强齐铂金张鹏飞杨明轩
Owner BEIHANG UNIV