Tips for Troubleshooting Common MIG Weld Defects
2014年8月19日 — Lack of fusion is the result of the weld metal failing to fuse completely to the base metal or to the preceding weld bead. It’s caused primarily by improper welding gun angle or incorrect travel speed. Avoid this problem by maintaining a 0- to 15-degree gun angle during welding and keeping the arc on the leading edge of the weld pool.
Deciphering Weld Symbols - MillerWelds
2007年5月2日 — You'll find the depth of the groove and the intended depth of the weld (in parentheses) to the symbol's left. The symbol's perpendicular line is always on the left side, regardless of the orientation of the weld itself. Common supplementary symbols used with groove welds are the melt-thru and backing bar symbols.
MIG Welding: Setting the Correct Parameters | MillerWelds
2020年4月29日 — We will touch on the basics of properly setting up your welder, and then look at what your weld bead is telling you. Equipment. Good equipment makes MIG welding easier, while poor equipment can cost you dearly in frustration and weld quality. MIG welders such as the Millermatic® 211 and Millermatic 141 are ideal for the occasional welder.
The Most Common MIG Weld Defects on Aluminum and Steel and …
2009年8月13日 — Porosity is when pinholes form in the weld bead face and weld interior in the absence of shielding gas. Improper equipment settings, a hole in the gun liner or wind can contribute to poor gas coverage. If using a drag vs. a push technique (FIG. 3, below) on aluminum, you may get a sooty looking weld (FIG.2).
Five Steps to Improving Your Stick Welding Technique
2009年8月14日 — Hold the electrode perpendicular to the joint, and then tilt the top in the direction of travel approximately 5 to 15 degrees. For welding vertical up, use a push or forehand technique and tilt the top of the electrode 0 to 15 degrees away from the direction of travel. Angle of travel. When welding from left to right, maintain a 0 to 15-degree ...
MIG Welding: The Basics for Mild Steel | MillerWelds
2010年6月1日 — MIG welding is an arc welding process in which a continuous solid wire electrode is fed through a welding gun and into the weld pool, joining the two base materials together. A shielding gas is also sent through the welding gun and protects the weld pool from contamination. In fact, MIG stands for metal inert gas.
Guide to TIG Welding Basics - MillerWelds
2022年10月11日 — High-quality, clean welds: With superior arc and weld puddle control, TIG welding allows you to create clean welds when appearances matter for the final product. Because the heat input is often controlled by pressing on a foot pedal, TIG allows you to heat up or cool down the weld puddle, providing precise weld bead control.
Understanding Common Welding Terms — A Guide for Beginners
2023年5月18日 — TIG welding is a welding process that joins metals by heating them with a tungsten electrode, which should not become part of the completed weld. Filler metal is sometimes used, and argon inert gas or inert gas mixtures are used for shielding. Flux-cored arc welding (FCAW) is another common process. This is an arc welding process that melts and ...
What Are the 4 Basic Welding Positions and When Should You Use …
2021年7月14日 — You can TIG weld in all positions. Short-circuit MIG can be done in all positions. Use spray transfer MIG for flat and horizontal welding only. Pulsed MIG can be used in all positions. Stick and flux-cored welding can be used in all positions, but the choice of filler metal is the main driver in this.
MIG Welding Tips and Techniques for Beginners | MillerWelds
2019年6月11日 — MIG welding requires shielding the weld from the atmosphere. To do this, direct shielding gas over the weld area, and control the flow of gas by the trigger on the gun. In other instances, welders might use a flux-cored wire, either alone or with a gas shield. The majority of MIG welding requries a gas shield — carbon dioxide and argon/CO2 ...