Composite Rare Earth Tungsten Electrode Commercial Welding Machine Test

During the experiment, the tester uses thyristor controlled DC TIG welding power source and the model is YC-300TSPVTA. Electronic stopwatch model is TREREX. Vernier caliper Model is 025 and No. is 096 583. Electronic balance model is AEL-200 and digital multimeter model is Bestillingsnr.

Arcing performance:           
Operating specifications: tungsten wire diameter 2.4mm, tip taper angle 45 °, the protruded length of the tungsten electrode 8mm, arc current 80A, arc duration 10S, arc length 3mm, repeating 30 times, argon gas flow rate 8L / min, DCSP TIG welding

Testing results: composite rare earth tungsten electrode at 30A, 80A and 150A welding current, arcing repeated 30 times were successful and the success rate was 100%, indicated it has good arcing performance.

Arc static characteristic curve:
Operating specifications: tungsten wire diameter 2.4mm, tip taper angle 45 °, tungsten electrode protruding length 3mm, arc length 3mm, argon gas flow rate 8L / min, DCSP TIG welding, tungsten  wire as cathode and water-cooled copper as anode

Test Results: Form the test result Fig. 4-24 shows that the static characteristic curve of the composite electrode is less than thorium tungsten electrode, indicating that it has low work function and strong electron emission capability, so it has good weldability.

Electrode burning rate:
Operating specifications: electrode diameter 2.4mm, welding current 180A, arc duration 20min, the electrodes extended length 3mm, arc length 3mm, argon gas flow 8L / min, water-cooled as copper anode, DCSP TIG welding

Test Results: From the test result Fig. 4-5 can see the burning property of composite rare earth electrode is better than thorium tungsten electrode.

After commercial welding machine testing found the result is consistent with the component screening test result, indicating optimized manufacturing technology can obtain high performance composite rare earth tungsten electrode, which is better than same specifications thorium tungsten electrode.

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