Miller Weldcraft WP-125L 소유자 매뉴얼 - 페이지 16
{카테고리_이름} Miller Weldcraft WP-125L에 대한 소유자 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Miller Weldcraft WP-125L 24 페이지.
페이지 인쇄SECTION 7 − GUIDELINES FOR TIG WELDING (GTAW)
7-1. Positioning The Torch
4
°
10−25
Bottom View Of Gas Cup
3
2
°
90
1
°
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 respirator.
MSDS for safety information.
Consider using cerium or lantha-
num based tungsten instead of
thoriated. Thorium dust contains
low-level radioactive material.
Properly dispose of grinder dust
in an environmentally safe way.
4
Wear proper face, hand, and
body protection. Keep flam-
mables 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
Select and prepare tungsten according
to Section 6.
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
tungsten 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.
Read
Ref. ST-161 892
OM-226 276 Page 13