The Welding of Aluminum & Its Alloys Part 2 pps

... and the grain size of the deposit.These in their turn depend on the parent and filler metal compositions, the amount of dilution, the quality of the welding process and the welder and, lastly, the ... preparation because of the change in the angle of the elec- trode to the weld bevel, as shown in Fig. 2. 16. Changing the welding process or the weldin...

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... 9.5 3 .2 sq. butt 0.8 180 1 3 .2 300 12. 7 3 .2 fillet 175 1 3 .2 300 12. 7 5 sq. butt 1.6 25 0 1 4.8 20 0 12. 7 5 fillet 24 0 1 4.8 25 0 12. 7 6.5 70 V- nil 320 1 4.8 150 12. 7 butt 6.5 fillet 29 0 1 4.8 25 0 12. 7 8 ... butt nil 20 20 1 1 .2 420 1 sq. butt nil 26 20 1 1.6 420 1.5 sq. butt nil 45 20 1 1.6 480 2. 4 sq. butt nil 80 17 1 2. 4 300 2. 4 fillet 130 14 1 2. 4 540...

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... sources. The quality of the radiograph is affected by the source to film distance – the greater this is the sharper the image; the size of the radiation source – the smaller the source the sharper the ... glycerine, is applied to form a film on the surface of the test piece. This aids the transmission of the beam into the sample. 21 0 The welding...

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... current 20 7 20 8 penetrant 20 5 20 7 radiography 21 1 21 5 ultrasonic 20 8 21 1 penetrant examination 20 5 20 7 plasma arc cutting 52 58 health and safety 56–58 parameters 55 principles 52 54 plasma arc welding parameters ... 121 – 124 shielding gases 130–133 spot welding 144–146 terminating the weld 140–141 torches 125 – 126 torch positioning 138–140 twin wire 124 – 125 wire f...

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... identify the condition of the alloy, in other words the amount of cold work the alloy has undergone or its heat treatment con- dition. There are a number of schemes available for identification of the alloy ... necessary to weld the lower copper-containing alloys then 4047 is the best choice as a filler metal. 50 The welding of aluminium and its alloys treatm...

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... Ar + H 2 55 300 140 7500 Mechanise 6N 2 32 CO 2 100 115 1800 Mechanise 10 N 2 32 CO 2 100 120 900 Mechanise 12. 5 N 2 32 CO 2 100 120 480 Mechanise 12. 5 N 2 32 CO 2 100 300 320 0 Mechanise 12. 5 Ar ... Manual 6.5 N 2 34 CO 2 100 1800 Manual 6.5 Ar + H 2 25 20 0 50 1500 Manual 10 N 2 35 CO 2 100 20 0 125 0 Manual 12. 5 Ar + H 2 28 28 0 55 1000 Manual...

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... transfer. If the tip is too close to the end of the gas shroud there is an increased risk of spatter damaging the tip. If the tip protrudes from the shroud then there is a risk of the tip touching ... most of these modern units a crater filling facility is built in, which automatically fades out the current when the trigger on the gun is released. 122 The weldin...

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... backed 320 23 0.8 1.0 2. 5 Cu backed 325 23 1.0 1.5 1.5 Cu backed 335 24 1.0 1.5 2. 5 Cu backed 350 24 1 .2 1.5 3 .2 None 24 0 23 2. 0 2. 5 2. 5 9mm hole 180 26 2. 5 2. 5 6.3 None 350 24 2. 0 3 .2 3 .2 10mm ... hole 26 0 25 2. 3 6.4 12. 5 11mm hole 400 24 2. 0 6.4 12. 5 13mm hole 370 25 2. 5 8.1 Introduction While MIG and TIG welding may be regarded as the most...

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... factor (N/mm 2 ) (N/mm 2 ) (%) 5083 O 141 29 8 23 1.00 5083-H 321 153 305 22 .5 0.91 60 82- T6 160 25 4 4.85 0.83 60 82- T6 aged 27 4 300 8.4 1.00 60 82- T4 138 24 4 18.8 0.93 60 82- T4 aged 28 5 310 9.9 1.19 7108-T79 21 0 ... 6.0 4 .25 46 10 2. 5 22 6.0 6.0 4.7 56 12 3 .2 22 6.0 6.0 5.8 76 12 which is generated a high-energy density beam of electrons of the order of...

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