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Induction welding machine

Induction welding machine is widely used for welding of symmetrically shaped workpieces made of structural steel, stainless steel, copper and copper alloys, high-temperature alloys, titanium alloys and other materials. Induction welding is particularly suitable for pipe fittings, pipe and flanges and shafts. Set of connection of parts.

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What is induction welding?

Enameled wire is an insulated wire commonly used in industrial manufacturing, and the outer layer of copper wire is painted for insulation. However, the rapidly strips paint on the lead ends of the enameled wire must be removed during use, and the copper wire must be exposed for welding or a mechanically fixed connection.

At present, the commonly used methods of removing paint from enameled wire include manual scraping, scraping after soaking in sulfuric acid or paint remover, and polishing with a paint remover. The first two traditional methods are obviously inefficient, and most of the paint removers are manually operated, holding the enameled wire into the grinding wheel for grinding, and the processing efficiency is low, which cannot meet the quantitative production requirements. And the larger the diameter of the enameled wire, the worse the paint removal effect of the simple manual paint remover.

The automatic paint fire retardant coatings removal system for enameled wire leads is to meet certain production conditions that require a large number of enameled wires. It uses automatic equipment to continuously and efficiently remove

The cylindrical enameled wire is cut according to the length requirement, and the process of induction heating and depainting is completed. The product can also be depainted at both ends of a certain length of enameled wire.

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where to use induction welding?

Welding longitudinally by automatic induction is a highly reliable, high-throughput process. Induction welding systems from LJ are low-power and highly efficient, lowering costs. They minimize scrap by controlling and repeating the process. A wide range of tube sizes can be accommodated with our systems thanks to automatic load matching. Additionally, they are easy to retrofit into existing production lines due to their small footprints.

Induction welding relies on the induction wire to generate induction electric energy inside the joint to achieve heating. Parts of some products can be connected by induction welding as the last process to complete processing. The parts in the connection area, including the surface of the parts to be connected, can be selectively heated to the welding temperature. In recent years, the application of induction welding in industry has received more and more attention, and it is widely used in industrial products, structural components, power and electronic products, micro equipment, machines and hand tools, and space components.

High-frequency induction welding can save energy because the heating energy is concentrated on the solder joints. The most common use is high-speed welded pipe, which takes full advantage of the two characteristics of local heating and easy control. Induction heating welding is suitable for welding steel, aluminum, brass, pure copper, copper alloy, stainless steel, high-temperature alloys, iron and cast iron and other weldments with symmetrical shapes. It is especially suitable for pipe fittings, pipes and flanges, Connections in the form of joints such as shafts and sleeves.

High-frequency heating is suitable for welding thin-walled pipe fittings. It can be brazed on site far away from the power supply by using coaxial cables and split-type induction coils. It is especially suitable for welding large components such as pipe joints that need to be disassembled on rockets. Moreover, high-frequency induction welding is still the main method of welding diamond saw blades.

Based on the technological advantages of induction welding speed, more materials that can be brazed have been developed, such as titanium, zirconium, molybdenum, ceramics and graphite. These materials are usually used in a controlled environment, that is, in a reducing atmosphere or a vacuum, to avoid oxidation and volatilization. welding in a reducing atmosphere can eliminate the use of flux when assembling some key electronic parts and space components, thus eliminating the problem of removing flux.

Types of induction welding machine

Induction welding can be divided into three methods: manual, semi-automatic and automatic. The small batch production of manual induction needles has low production efficiency, and the implementation and parameter adjustment are completed by manual operations. This method is only suitable for high requirements on the technical level of the operator, but has greater flexibility. For example, sometimes the parts are uniformly heated.

During semi-automatic induction welding, the loading and unloading of weldments and energization and heating still rely on manual operation, but the parameter control of the welding process and the end of power failure are automatically controlled by the time relay or photoelectric controller, which can better ensure the heating parameters. consistency. The semi-automatic induction welding method is mostly used for aeronautical components.

The induction coil used in automatic induction welding apparatus is a disc type or a tunnel type. The induction coil is directly energized during operation, and the welding parts are continuously sent to the induction coil by the conveying mechanism or the turntable. The heating parameters required by the weldment are ensured by adjusting the movement speed of the transmission mechanism and controlling the time of the weldment in the induction coil. This method has high production efficiency and is mainly used for mass production.

The induction welding machine usually consists of a high-frequency power supply, mechanical devices (including a workbench and its pneumatic lifting mechanism or a rotation mechanism of the workbench, a two-dimensional fine-tuning mechanism and a weldment fixture), as well as a water cooling system, and an electric control system. Induction welding machines are mostly dedicated equipment with high productivity and stable and reliable weld quality.

Induction welding machines are used in the refrigeration industry (such as the main valve body and two-end pipes and capillary tubes of refrigerators and air conditioners, pilot valve bodies and ducts, electromagnetic reversing valves, four-way reversing valves, etc.), motor industries (such as generator windings) , Transformer winding), aerospace industry (liquid rocket engine thrust chamber, satellite duct) and some other industrial sectors (such as stainless steel/aluminum double bottom pot, copper radiator, turbine blade, automobile commutator, carbide saw blade) It is widely used.

Safety considerations and prevention of the induction welding machine

Safety considerations for induction welding operations

The safety issues of induction brazing are mainly embodied in the following aspects.

  • Electrical equipment.
  • Contain corrosive flux.
  • Hot material.
  • Potential explosion hazard in controlled atmosphere welding.
  • Chemicals used in cleaning and pretreatment.

The main preventive measures are as follows.

  • Provide a safe switch for turning on the generator.
  • Make a coating on the induction coil, wrap it with insulator, and cover it mechanically.
  • Isolate the machine head and other auxiliary electrical equipment.

While some materials are connected by induction brazing, the toxic fumes and gases emitted from the flux and welding material are missing

Ventilated occasions will endanger the operator. Most welding fluxes emit corrosive fumes at high temperatures, some welding

The material contains volatile cadmium, so the welding place requires good ventilation.

Equipment maintenance-generally do not allow live operation, as it is, if live maintenance is required, the operator must wear insulated shoes and insulated hands

The set must be guarded by another person. When power failure is overhauled, the main power switch must be cut off, and each capacitor bank must be discharged with a discharge rod.

Only after power is allowed to carry out maintenance work.

What information do we need from you when suggesting the best induction machine?

your work piece metal type.

Each metal’s performance is different under magnetic induction heating.

your work piece welding part’s sizes.

It is very important for us to calculate machine frequency and power and make the best coil.

Welding speed for 1 job.

this is a very important main heating effect that determines the machine’s frequency and power.

LJ Induction ‘s promises for the our high efficiency induction heating machine

  • Two years quality guarantee in warranty.
  • Advanced payment method.
  • Fastest delivery from our 118 team and 3500sqm working basement.
  • 7*24 support.
  • Superiority service top to end.

Please contact us without any hesitation!

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we are dedicated to providing the best suitable induction heating solutions for our customers. Our mission starts with our free testing & solution, in which we solve the most challenging heating applications, confirming the heating process that can benefit from our systems.

induction welder machine