Guangzhou EACO Welding Equipments Manufacture Blog

Arc welding   is a common welding process used in a variety of industries to join metals together. It involves creating an electric arc between a consumable or non-consumable electrode and the workpiece, which heats the metal and creates a molten pool. As the molten metal cools, it solidifies and forms a strong bond between the two pieces being joined. One of the key factors that affect the quality of the weld is the type of current used. In arc welding, two types of currents are commonly used - alternating current (AC) and direct current (DC). Both of these currents have their unique characteristics and can be used in different  welding applications  depending on the requirements. Alternating current (AC) is an electrical current that alternates its direction periodically, usually at a frequency of 50 or 60 Hz. AC is commonly used in welding applications where a high penetration is required, as it allows for a deeper weld pool to be formed. AC is also ideal for welding m...

When you start TIG welding, the first major setting you have to set up is the current. Using AC or DC has a hugh impact on your weld results. In this article I will give you a best practice guideline that should help you make the right choice for your welding tasks in the future.  TIG welding  can be done with both, alternating current (AC) or direct current (DC). The type of current to choose depends on the workpiece material. Generally, Steel would be welded with DC and Aluminium with AC. In the following sections, I will get into a more detailed answer, which should enable you to make the right choice with ease, the next time you have to pick a type of current for your weld job.    AC, DC, whats the difference? In case you are not familiar with the terms AC and DC yet, they describe the way electricity is flowing. Electricity is a stream of electrons, comparable with water in a river. In this example, a river would be a direct current power sou...

  What metals can I weld with TIG? "DC" (direct current) TIG welders can be used to weld a variety of "ferrous" metals, including mild and stainless steels, as well as copper and chromium-molybdenum alloys. (but not aluminum). Many, but not all, inverter rod/MMA welders have DC TIG capability. An important feature for effective TIG welding is elevated arc ignition. To weld aluminum, you need a machine with "AC" (alternating current) capability. These machines typically have both AC and DC capability in one machine ("AC/DC") - which allows them to weld most metals, including: aluminum, steel, stainless steel, copper, chromium-molybdenum, and more. Typical AC/DC machines that are dedicated TIG welders (sometimes with stick/MMA capability as an add-on).    What gas should I use for TIG welding? Most common TIG welding applications require pure argon (100% Ar). Some critical applications may require specialty gases.   What is the correct polarity for...

  What is TIG welding? The acronym TIG stands for Tungsten I nert G as . Tungsten refers to the type of conductor (tungsten electrode) used to transfer the welding current to the work and create the arc. Inert gas refers to the fact that the process relies on an inert gas (such as argon) to protect the weld and prevent oxidation of the weld. TIG is also known as gas tungsten arc welding (GTAW). Simply put, TIG welding is probably most similar to oxy-fuel welding. However, instead of a flame, it uses an arc to melt the workpiece and filler metal, rather than a preheated flame, and it uses an inert gas to prevent weld oxidation. As with oxy-flame welding, the filler metal is manually fed into the weld as needed. Since the current is not conducted through the filler metal to the workpiece (as in MIG and MMA welding), the arc is more controllable.   What are the advantages of TIG welding? Very low amperage can be achieved, making the process ideal for welding thin materials. In ad...

In TIG welding (Tungsten inert gas), the welding arc is formed between a non-consumable tungsten electrode and the workpiece. The shielding gas is always an inert gas that does not affect the welding process per se. Usually, the shielding gas is argon and it protects not only the molten weld but also the electrode in the torch from oxygenation. The filler material may not be necessary for TIG welding. The pieces can be fused also by melting the groove together. If a filler is used, it is fed into the molten weld manually and not through the welding torch as in MIG/MAG welding. Therefore, the TIG welding torch has a completely different structure than  a MIG/MAG torch . Various  TIG welding  methods include, for example, the DC TIG welding method that uses direct current, AC TIG welding that utilizes alternating current and pulse TIG.     What is Lift-Arc TIG Ignition? With the Lift-Arc Ignition feature, to start the arc the tungsten electrode is touched on the ...

Welding is a serious job. It is used to join pieces of metal together and is a very skilled trade. So what are the different types of welding and what are they used for in industry?   Stick Welding Stick welding, also known as Arc welding , is doing it the old-fashioned way. Stick welding is a bit harder to master than MIG welding, but you can pick up stick welding equipment for very little if you want to have a go at home. Stick welding uses a stick electrode welding rod.   MIG Welding MIG welding  is one of the easier types of welding for beginners to learn. MIG welding is actually two different types of welding. The first use bare wire and the second flux core. Bare wire MIG welding can be used to join thin pieces of metal together. Flux core MIG welding can be used outdoors because it does not require a flow meter or gas supply. MIG welding is usually the welding of choice for DIY enthusiasts and hobby welders who don’t have the money to spend on expensive equip...

Plasma cutting is a process that we have seen evolve from its humble beginnings in the 1960s to its current popularity as a widespread cutting technology for a wide range of industries, from manufacturing shops to automotive repair and restoration to industrial construction to salvage and scrap operations. In this blog, we will take an in-depth look at what plasma cutting is and how it works, as well as the advantages and disadvantages of the technology.   What is plasma cutting and how does it work? Plasma is a conductive, ionized gas-like substance. It has long been used as a very effective material for cutting steel, stainless steel, aluminum, brass, copper and many other conductive metals in the correct environment. Following the application of computer numerical control (CNC) technology in the 1980s and recent manufacturing improvements,  plasma cutting machines  not only offer advantages over conventional cutting due to the absence of metal chips, producing cleaner...