Speed of welding

Normally, the welding current shall be the maximum stated by the manufacturer less 15 A, the machine setting being controlled within a tolerance of 5 A (Note 3). The speed of welding shall be adjusted to an electrode consumption between 12 and 13 mm per 10 mm bead length. The time spent in deposition shall be noted. 

Joints are weakened by incomplete softening, oxidation and thermal degradation of plastic material. Process variables are hot gas temperature, pressure (either from filler rod or fixtures) and speed of welding. 

The time gap in carrying out the welding is compensated by raising the speed of the second route now introduced until the predefined buffer of an excess length of sheet is produced with the help of accumulator drive motor... 

Aittomated pracesKS use close control of welding parametera such as current ower, weld speed, an lengA, etc. 

Welding Defects Visual, radiographic and/or ultrasonic Indications. Any welded joints. Basic welding problem laminated steel can cause trouble. Electrode manipulation. Control of welding speeds, procedures, careful inspection and nondestructive testing to locate defects for cutting out or repair. 

Global Electric Motor s two-seat GEM car is a NEV, with a top speed of 25 mph and a curb weight of 1100 pounds with batteries. A 72-volt shunt GE motor is used with front wheel drive. Six 12-volt deep-cycle batteries are used with hydraulic brakes, independent front wheel suspension, rack and pinion steering, aluminum welded space frame and composite and thermoplastic body. It seats two or four with a price of 7,000 to 9,000. 

Control of welding speeds, procedures, careful inspection and nondestructive testing to locate defects for cutting out or repair. 

Alloys from all three classes, a, P, and a P, have been successfully friction stir welded at the University of South Carolina. 2 mm thick sheets of a-Ti, Ti-15V-3Sn-3Cr-3Al and Ti-6A1-4V have been FS welded at a welding speed of lOOmm/min at a tool rate of 200 rpm. The CP-Ti and the Ti 15-3-3-3 were welded using z-axis load control. Load control welding on Ti-6-4 was not stable, so that alloy was welded using position control. The P-transus temperatures for the three alloys are CP-Ti= 915°C, Ti-6-4= 995°C, and Ti-15-3-3-3= 770°C. 

The body blank is formed into a cylinder over a mandrel and the hooks are engaged and rolled closed to form the side seam, which is then soldered or welded. A recent development consists of making a cylinder long enough for three bodies, which is parted across previously made score lines into three separate can bodies. Speeds of up to 900 bodies per minute can be achieved, compared with around 500 for the conventional method. 

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