Welding machines are complex pieces of equipment that use electric currents to superheat and melt metals. Welding machines are capable of binding two independent pieces of metal, as well as cutting and reinforcing singular metal sheets and beams. Welding machines employ a shielding gas to protect the welded area from moisture and oxygen while it is formed and while it initially cools. This shielding action ensures a smooth welded bead that is strong and durable.
There are myriad different types of welding shield gases available, and choosing the type of welding gas in Phoenix, AZ to use for your application can be a challenging endeavor. Understanding the ways that different gases interact with metals is essential if you are embarking on any major welding projects.
Here are just a few basics about some of the most common types of gas to keep in mind when you are selecting a welding gas in Phoenix, AZ to use for your next project:
- Helium: Because helium is substantially lighter than air, it requires exceptionally high flow rates to be effective in welding applications. Additionally, helium is not a good electrical conductor. This means that you’ll need a higher voltage to start an arc when you are using helium as your shield gas.
- Argon: This is a versatile, easy-to-use welding gas. Argon is heavier than air, which means that it falls and distributes itself evenly over the weld area. Argon is also very conductive, so you don’t have to ramp up your voltage in order to weld effectively using argon gas.
- Two-gas blends: Often, welders will blend two types of gas in order to yield certain types of welds. For instance, argon and carbon dioxide are frequently combined in order to weld near-perfect beads. Two-gas blends allow savvy welders to create a number of interesting results.
- Hydrogen: This gas is commonly added to argon or helium to weld stainless steel surfaces. Typically, hydrogen is used at concentrations of less than 10 percent. Hydrogen helps remove oxides, and also allows the arc to burn at hotter temperatures, resulting in wider beads.
- Oxygen: Known for its ability to increase heat output, oxygen is most commonly added to helium or argon to increase bead width and smoothness. Oxygen also possesses ionization energy, making it desirable to a number of welders. Finally, oxygen also improves arc performance by enhancing overall arc stability.
Since 1969, Vern Lewis Welding Supply, Inc. has been a premier provider of welding gas in Phoenix, AZ. We are proud to be one of the region’s most well-stocked welding supply stores. We offer comprehensive welding services and products. Our well-trained and experienced team members can assist you in determining which type of welding shield gas is right for you. Additionally, we offer welding classes for welders of all skill levels if you want to improve your knowledge and skills. Contact one of our friendly representatives today to learn more about our extensive stock and selection. We look forward to working with you!
Categorised in: Welding Gas
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