25KW High Frequency Induction Welding Machine


Rated Power Output:25KW

Frequency Range:30-80KHz

Single Phase InputThree Phase 380V/50Hz

Current RangeThree Phase 2-35A

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KEXIN 25KW High Frequency Induction Welding Machine

What is 25KW High Frequency Induction Welding Machine Advantages?

The high frequency induction brazing machine adopts MOSFET, IGBT power devices and unique frequency conversion technology to provide higher reliability and durability, stable operation, high efficiency, energy saving, and greater output power.

It has the functions of constant current and constant power control, which greatly optimizes the metal heating process, realizes efficient and rapid heating, and maximizes the superiority of the product.

Under the same conditions, it has twice the power saving effect than traditional electronic tube high-frequency heating equipment. It has the effect of “using small materials” and multiplying the effort with half the effort. At the same time, it reduces power load and power capacity increase and saves costs.

Choose the power supply according to the power and frequency. The higher the frequency, the shallower the heating depth, and the lower the frequency, the better the heat permeability. It can be used for local welding. The operation is simple and easy to understand, and it can be operated without professional personnel.


The induction welding machine is applicable and suitable for various metal products for different welding treatment demands. It can be widely used for welding different types of pipe fittings. This kind of brazing welding machine is more likely to be chosen by manufacturers and suppliers of pipe fittings such as copper pipes in air-conditioners, welding of mining tools, welding of woodworking tools like milling cutters and various woodworking drills. The advantage of induction welding is to improve the product quality, extend product life and reduce energy consumption.


25KW High-Frequency Induction Welding Machine
Model KX-5188A25
Rated Power Output 25KW
Frequency Range 30-80KHz
Single Phase Input Three Phase 380V/50Hz
Current Range Three Phase 2-35A
Volume (mm³) 670*280*500
Net Weight 33KG
Gross Weight 45KG
Cooling Water Flow Hydraulic Pressure≧0.2MPa; Flow Rate: 5-20L/Min
Cooling Water Temperature ≤40℃
Water Connection 1 inlet and 1 outlet
Packing Method Wooden Box

KEXIN high frequency induction welding machine is currently the most efficient, fastest, low-consumption, energy-saving and environmentally friendly high frequency induction heating machine for heating metal and non-metal materials.

high frequency induction heating equipment

High Frequency Induction Welding Machine


The principle of the high frequency brazing welding machine is to use the skin effect of the high-frequency current to concentrate the high-frequency electric energy on the surface of the weldment, and to use the proximity effect to control the position and range of the high-frequency current flow route. When the high frequency current is required to be concentrated on a certain part of the weldment, as long as the conductor and the high frequency induction welding machine form a current loop and the conductor is close to this part on the weldment, so that they form adjacent conductors with each other. Fulfill this requirement. According to the specific form and special requirements of the weldment structure, the high frequency induction welding machine mainly uses the skin effect and the proximity effect to quickly heat the surface metal of the weldment to be welded to achieve welding.

The contents of the two major effects of the high frequency current of the high-frequency induction welding machine are:

Skin effect: usually measured by the penetration depth of the current, the smaller the penetration depth value, the more significant the skin effect. This penetration depth is proportional to the square root of the conductor’s resistivity and inversely proportional to the square root of frequency and permeability. In layman’s terms, the higher the frequency, the more current is concentrated on the surface of the steel plate; the lower the frequency, the more scattered the surface current is.

Proximity effect: refers to the fact that when high frequency current flows in opposite directions between two adjacent conductors, the current will flow intensively to the edges of the two conductors. Even if the two conductors have another shorter side, the current does not follow. Moving along a shorter route, we call this effect: the “proximity effect”.

Induction Welding Machine Introduction


1. Induction welding machine deploys with Germany SIEMENS INFINEON IGBT Module (40-60KHZoscillation frequency, fast response time, high arc stability and almost spatter-free welding).

2.  It contains Japan Nichicon electrolytic capacitor (filter capacitor).

3. It is adopted signal circuit, drive circuit board, control circuit board and components: Toshiba, Hitachi, Motorola and also China’s top manufacturers.

4.  This induction welding machine uses international advanced all-solid-state semiconductor power devices.

5. Imported transistor integrated block.

6. High-speed control tube.

7. As with perfect control, protection and alarm display circuit, the machine could get full automatic tracking frequency and continuously adjustable power. It is also safe and dependable protection, clear and occurs data display and etc.

How does induction welding work?

The welding machine induces heating from a radio frequency alternating current to magnetically excite the implant, which is located at the joint interface of the two parts being welded. The implant or gasket is usually a polymer composite material to be welded to metal fibers or ferromagnetic particles.


What are the welding steps?

Assuming you glued everything together correctly, you can now go back and fill the remaining seams with welds. This is where you really need to hone your welding skills, so pay close attention to how the welding torch angle, travel speed, and electrical viscosity affect the appearance of the welding.

The most important thing to consider when performing these welds is to maintain the consistency of the above categories. In other words, once you have determined the correct torch angle, do not change it midway through welding. Your travel speed should be quite fast, and you don’t want to speed up or slow down during the welding process, but to maintain a constant speed. Finally, your electrical extension should not exceed 1/2 inch or less than 1/4 inch, so it is best to keep it around 3/8 inch.

Mastering the consistency of the welding technique is the key to being able to weld proficiently. Some practice is required before the weld looks perfect. If the effect is not good on the first try, please keep this in mind, and please be patient to remind yourself that the exercise is perfect.


What is high frequency induction welding?

High-frequency induction welding is used to make the strip into a tube or tube, and then feed it into a roller, which makes the strip into a cylindrical shape. The overlapping edges converge between the squeeze rolls to create a V-shape at the welding point. The included angle of steel is usually 2-5°.

The high frequency coil introduces current into the tube before the squeeze roller. The current is concentrated on the edge of the V-belt, and the resistance heats a narrow area of ​​the edge to the welding temperature. The squeeze roller consolidates the weld by expelling any molten material and contaminants, and forming small up-forged beads on the inside and outside of the pipe. These beads can be scraped off the tube immediately to provide a smooth surface.



Will induction heating increase my utility bills?

Not likely. Induction heating is a very effective, efficient means of heating. Most of our customers who are switching to induction for the first time see their utility bills go down.

The induction welding machine is widely used in many different applications


brazing welding, copper welding, hardware terminal welding

Welding of solar energy, solar panel copper plate and copper tube

 Welding of various drill bits, drill rods, button bits, coal bits, air bits and other mining accessories

 Welding of various hardware: welding of diamonds, abrasive tools, drilling tools, alloy saw blades, cemented carbide turning tools, milling cutters, reamers, planers, woodworking bits, etc.

 Welding of various hardware and machinery accessories: silver welding of hardware sanitary products, refrigeration copper accessories, lighting accessories, precision mold accessories, hardware handles, egg beaters, alloy steel and copper, copper and copper equivalent or dissimilar metals, brazing.

Composite pot bottom welding is mainly used for three-layer brazing of round, square and other special-shaped flat stainless steel pot bottoms and aluminum sheets, and can also be used for other metal flat brazing.

Packing Details

Export standard packing, inner carton outer wooden box and double protection



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