TIG Book Episode 2 pps

... IONS ELECTRONS 3/ 32& quot; ELECTRODE WORK + – + – + – ELECTRODEWORK Current 0 + _ 20 0 20 0 Sine Wave Square Wave Advanced Square Wave 7 for GTAW • Gas Tungsten Arc Welding TIGTIG HANDBOOKHANDBOOK Figure 2. 26 ... A 100 A ADVANCED SQUAREWAVE AC WAVE TIME 0 13 for GTAW • Gas Tungsten Arc Welding TIGTIG HANDBOOKHANDBOOK Figure 2. 22 shows an illustration of the frequency effects on a w...

Ngày tải lên: 12/08/2014, 08:21

... wrists. See Figure 5.1 and 5 .2. Figure 5.1 Properly dressed welder. Figure 5 .2 Boots, leathers, gloves. 43 for GTAW • Gas Tungsten Arc Welding TIGTIG HANDBOOKHANDBOOK Safe Handling of Cylinders Regardless ... cylinder. Handwheel Outlet Nozzle Protector Cap Valve Safety Nut 45 for GTAW • Gas Tungsten Arc Welding TIGTIG HANDBOOKHANDBOOK It is essential to know that some Gas Tungsten Arc W...

Ngày tải lên: 12/08/2014, 08:21

... writing in Profession (20 05), concurs with this approach: "If we are able to conclude that while we may have learned something there is still more to be learned, we may mitigate some of the ... 'David Posner, "Rhetonic, Redemption, and Fraud: What We Do When We End Books," Profession, no. 1 (20 05), 180. I Introduction for Teachet This claim does not come without s...

Ngày tải lên: 07/07/2014, 13:20

... writing in Profession (20 05), concurs with this approach: "If we are able to conclude that while we may have learned something there is still more to be learned, we may mitigate some of the ... 'David Posner, "Rhetonic, Redemption, and Fraud: What We Do When We End Books," Profession, no. 1 (20 05), 180. I 8 Introduction for Teachers scaffolding for all of Louis Ka...

Ngày tải lên: 07/07/2014, 22:20

... LIGHTROOM 3 CLASSROOM IN A BOOK 25 mode using the settings current in the Slideshow module. e slideshow will repeat until you return to the Library module by pressing the Esc key. 2 While the slideshow ... selection in the Survey view in the same way. ptg ADOBE PHOTOSHOP LIGHTROOM 3 CLASSROOM IN A BOOK 23 2 Lightroom will open in the screen mode and workspace module that were a...

Ngày tải lên: 08/08/2014, 13:21

... is usually a minor thing. Q26: The following microbiological investigations should be done routinely in all cases of community acquired pneumonias, except one investigation: a- Sputum for gram ... All patients with a resting PaO2 of less than 9 kPa on air require supplementary O2. e- Hypercapnia is an absolute contraindication to air plane traveling. Q 12: In COPD, which one is the wrong...

Ngày tải lên: 09/08/2014, 16:21

... I4md 14,cd 14cd Class 422 (short 42) - P 422 P 42 P4 422 P 422 P4 ,22 P4 ,2 P4 ,22 P4 ,2 P 42, 2 P 42, P 422 12 P 422 , P4 121 2 P4 121 P4 321 2 P4 32, 1 422 1 422 14 ,22 14 ,2 422 mmm Class (short 4/mmm)-D4h ... 156.8 20 6.7 163.6 21 5.4 171.1 22 6.8 180.0 23 7.7 190.3 24 9 .2 20 0 .2 24 9.0 20 1.1 25 8.8 21 0.1 26 6.6 21 7.8 27 3.6 22 4.7 2...

Ngày tải lên: 10/08/2014, 12:21

Ngày tải lên: 11/08/2014, 10:22

... I. The GTAW (TIG) Process The necessary heat for Gas Tungsten Arc Welding (TIG) is produced by an electric arc maintained between a nonconsumable ... added to enhance travel speeds. The GTAW process can produce temperatures of up to 35,000˚ F/19, 426 ˚ C. The torch contributes only heat to the workpiece. If filler metal is required to make the ... is that it will weld more kinds of metals a...

Ngày tải lên: 12/08/2014, 08:21