The Welding of Aluminum & Its Alloys Part 3 docx

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Ngày tải lên: 10/08/2014, 12:21

... than 39 ppm H 2 O) – do not forget that this is at the torch, not at the outlet of the cylinder regulator! 7 .3. 2 Welding filler wire The wire acts as both the filler metal and the anode in the welding ... end the welding sequence. This is generally achieved by means of a trigger on the handle of the torch. Operating the trigger initiates the shielding gas...

Ngày tải lên: 10/08/2014, 12:21

... 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 ... been strengthened by either cold working or precipitation hardening. One aspect of this is the width of the HAZ, a function of the high thermal conductiv- ity...

Ngày tải lên: 10/08/2014, 12:21

... will depend on the size of the equipment to be used, in particular the size of the torch. Welding aluminium with the gas shielded processes 70 The welding of aluminium and its alloys Visible ... design of edge preparation. Joint design is determined by the strength requirements, the alloy, the thickness of the material, the type and location of the...

Ngày tải lên: 10/08/2014, 12:21

... rod can also shield the material ahead of the weld pool from the cleaning action of the arc and this may also lead to oxide entrapment. 110 The welding of aluminium and its alloys 80° 10 to 20° ... flexible. Overheating of the torch can melt the brazed joints within the torch or the plastic tube that sheaths the power cable and it is important that 106 The...

Ngày tải lên: 10/08/2014, 12:21

... backed 32 0 23 0.8 1.0 2.5 Cu backed 32 5 23 1.0 1.5 1.5 Cu backed 33 5 24 1.0 1.5 2.5 Cu backed 35 0 24 1.2 1.5 3. 2 None 240 23 2.0 2.5 2.5 9mm hole 180 26 2.5 2.5 6 .3 None 35 0 24 2.0 3. 2 3. 2 10mm ... range of materials (Fig. 8.2). The laser welding of aluminium and its alloys has, however, presented problems to the welding engineer. Poor coupling of the...

Ngày tải lên: 10/08/2014, 12:21

... 26 6 1.0 16 3. 0 Flat 2.7 30 7 1.25 16 3. 0 Flat 3. 0 33 7 1.6 16 3. 0 Flat 3. 35 35 8 1.8 16 4.0 4.0 3. 6 35 8 2.0 22 4.0 4.0 3. 8 41 8 2 .3 22 6.0 6.0 4.25 46 10 2.5 22 6.0 6.0 4.7 56 12 3. 2 22 6.0 ... determines the peripheral speed, the pressure applied during the welding process and the duration of the weld cycle. The metal extruded from the joint forms a...

Ngày tải lên: 10/08/2014, 12:21

... a WPS for the welding of aluminium or its alloys shall be approved. It gives the limits of validity of the WPS within the range of variables and includes an example of a WPAR and the accom- panying ... Tests for the Arc Welding of Steel. • Part 4 Welding Procedure Tests for the Arc Welding of Aluminium and its Alloys. • Part 5 Welding Approva...

Ngày tải lên: 10/08/2014, 12:21

... 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 image; the beam energy – the higher the ... completes one of the above tests then there is no limit to their range of approval. This is provided that they continue to work with the same type of wel...

Ngày tải lên: 10/08/2014, 12:21