How Inverter Welding Machines Work
Inverter welding machines rely on powerful electronic switches to control the flow of electricity. The most common types use IGBT (Insulated Gate Bipolar Transistors) as switches. These are known as IGBT inverter welding machines.
When welding, the circuit stays closed, meaning the current flows evenly throughout the entire circuit. However, the resistance isn’t the same everywhere. The biggest resistance typically comes from the contact points, especially where the electrode touches the metal. This is known as contact resistance, and it’s the spot where most of the heat is generated, according to Joule’s Law (Q = I²Rt).
In simple terms, where the resistance is high, the heat increases. The electrode (usually an alloy with a low melting point) melts quickly in this high-resistance area. The melted material bonds with the metal, creating a solid weld after it cools.
Because inverter welding machines are switching power supplies, they need high-quality components to work smoothly in changing environments and ensure long-lasting performance.
Uses of Inverter Welding Machines
Inverter welding machines come in various forms and are used in different types of welding:
– Inverter DC Manual Arc Welding Machines: These are great for welding low carbon steel, medium carbon steel, and alloy steels.
– Inverter Semi-Automatic Gas Shielded Welding Machines: These machines are used for more controlled welding of metals like steel and alloys.
– Inverter Argon Arc Welding Machines: These are ideal for welding metals like stainless steel, aluminum, titanium, and zirconium, especially thin stainless steel plates.
– Inverter Air Plasma Cutting Machines: These machines can cut through carbon steel, stainless steel, alloy steel, aluminum, copper, and many other metals. Thanks to the concentrated plasma arc, the cutting process is fast, efficient, and clean, with minimal heat damage and a smooth surface finish. They’re not only quick but also cost-effective.
Welding Trolleys: Boosting Efficiency
A welding trolley is a complete system that includes the welding machine and tools designed for specific workpieces. With a welding trolley, welding can be done automatically, greatly improving efficiency. In fact, a welding trolley can work 2 to 3 times faster than manual welding.
An operator can manage two to three welding trolleys at once, reducing the physical strain on workers and decreasing the need for highly skilled welders. This means faster work with improved welding quality.
Industries That Benefit
These welding and cutting machines are essential in many industries, such as:
– Construction
– Machinery manufacturing
– Shipbuilding
– Steel structure
– Vehicle manufacturing
– Electrical construction
– Pipelines
– Chemical construction
– Boilers
– Bridges
They are widely used for efficient welding and cutting in various sectors that require precision and high-quality results.