Miller CST 282 소유자 매뉴얼 - 페이지 38
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SECTION 10 – GUIDELINES FOR TIG WELDING (GTAW)
10-1. Positioning The Torch
1
2
1
4
10 25
7
OM-285986 Page 32
3
3
2
90
10 15
5
6
5
6
1/16 in
3/16 in
Grinding the tungsten electrode
produces dust and flying sparks
which can cause injury and start
fires. Use local exhaust (forced
ventilation) at the grinder or wear
an
approved
MSDS for safety information. Con-
sider using cerium or lanthanum
based tungsten instead of thori-
ated. Thorium dust contains low-
4
level radioactive material. Properly
dispose of grinder dust in an envi-
ronmentally safe way. Wear proper
face, hand, and body protection.
Keep flammables away.
1 Workpiece
Make sure workpiece is clean before
welding.
2 Work Clamp
Place as close to the weld as possible.
3 Torch
4 Filler Rod (If Applicable)
5 Gas Cup
6 Tungsten Electrode
7 Bottom View Of Gas Cup
Select and prepare tungsten according to
Section 9.
Guidelines:
The inside diameter of the gas cup should be
at least three times the tungsten diameter to
provide adequate shielding gas coverage.
(For example, if tungsten is 1/16 in diameter,
gas cup should be a minimum of 3/16 in
diameter.
Tungsten extension is the distance the tung-
sten extends out gas cup of torch.
The tungsten extension should be no greater
than the inside diameter of the gas cup.
Arc length is the distance from the tungsten
to the workpiece.
respirator.
Read
OM-