High frequency machine and high frequency welding machine, what is a high frequency welding station

High-frequency welding machine is one of the high-frequency induction heating equipment, which can not only weld various metal materials, but also heat processing, heat treatment, smelting, etc.

The welding application range is quite wide, such as: tungsten steel, alloy steel and other cemented carbide bit welding, turning tools, milling cutters, drill bits and large sheets; Various specifications of iron, copper, aluminum, stainless steel, etc.; Silver contacts, bellows, solenoid valves, pipe joints, steel belts, etc.; Flat surfaces, end faces, gaps, butts, defects, etc.

The applicability of its electrode welding consumables is more, such as: brass electrode, copper electrode, phosphor copper electrode, stainless steel electrode, aluminum electrode, copper-aluminum electrode, silver electrode, silver electrode, tin rod, tin wire, etc.

Features and Benefits of High Frequency Welding:

Because welding is generally a surface and surface welding and penetration process between two workpieces, in order to achieve the purpose of merging the two into one. As a result, there is no need for deep and integral heating of the workpiece during the welding process. Only surface heating and local heating of the workpiece can not only significantly increase the welding speed and save costs, but also effectively improve the welding quality and reduce the impact of oxidation, vulcanization, decarburization, discoloration, deformation and hardness.

The power selection of high-frequency machine mainly depends on the material, size, shape and speed requirements of the workpiece. For workpieces of the same specification, the iron power can be smaller, the stainless steel is slightly larger, and the copper is larger; Of course, the workpiece of the same material requires a large amount of power, and a small size requires a small amount of power; The part and shape to be welded will also have an impact on the choice of power, the faster the heat dissipation, the greater the power required; The faster the welding speed is required, the greater the power; Wait a minute.

Generally, 18kw machine can be selected for conventional size turning tool welding, and 25kw machine should be selected for large workload. The welding of milling cutters is mostly selected for machines above 25kw, and the 18kw machine can also be used for the welding of smaller blades one by one.

For the simultaneous welding of multiple inserts of milling cutter and drill, its power should not be too small. Otherwise, not only the welding speed is slower, but the welding quality is also poor.

Friendly reminder, after welding tungsten steel and other material cutter heads, slow cooling methods such as oven insulation or lime insulation should be used. Otherwise, the blade and cutter head are easy to crack and break.

There is no special need for the general high-frequency welding machine without setting up the temperature control circuit, one is that the welding temperature is easy to grasp artificially, the second is that the high-frequency welding speed is fast, and the temperature control is not too necessary, and the third is that there is a certain deviation in temperature sampling. Many manufacturers who originally envisioned the use of temperature control eventually did not need to use it in actual applications. Skilled workers can fully grasp and control the temperature and quality of each weldment.

The high-frequency soldering station uses the principle of high-frequency eddy current heating. The metal shell and soldering tip of the lead-free soldering iron shield the electromagnetic waves, and the trace chain converts the electromagnetic waves into heat through the short circuit and shielding of the electromagnetic waves by the soldering iron tip, and the soldering station that is heated by the eddy current of the real roller is heating fast, and the rapid heating is its characteristic point.

High-frequency lead-free soldering station is an upgraded product of constant temperature soldering station, and the same as constant temperature soldering station, high-frequency lead-free is very widely used, from common electronic home appliance maintenance to electronic integrated circuits and chips will be applied to the soldering station as a soldering tool, but it is most commonly used for soldering of PCB circuit boards in electronic factories.

The principle of high-frequency welding: with the help of the skin effect of high-frequency current, the high-frequency electrical energy can be concentrated on the surface of the weldment, and the proximity effect can be used to control the position and range of the high-frequency current flow route.

When a high-frequency current is required to be concentrated in a certain part of the weldment, this requirement can be achieved as long as the conductor and the weldment form a current loop and the conductor is close to this part of the weldment, so that they form adjacent conductors to each other. High-frequency welding is based on the specific form and special requirements of the weldment structure, mainly using the skin effect and proximity effect, so that the surface metal of the weldment to be welded can be quickly heated to achieve welding.

1. The welding current of the intermediate frequency welding machine is close to complete DC, because there is no obvious peak current, the size of the nugget is stable and quietly expands, there is almost no spatter, the welding quality is stable, and the thermal efficiency is high. Compared with the power frequency welding machine, the welding current of the medium frequency inverter welding machine can be reduced by 40%, and the service life of the electrode is greatly extended.

2. The transformer of the intermediate frequency welding machine is small in weight and size, and the input power is low, which is convenient for the use of transformer welding tongs. When applied to robot spot welding operations, the load of the robot can be reduced, while the power frequency welding machine is used in automatic lines, and the robot with a stronger load capacity is required.

3. The response speed of the intermediate frequency spot welding machine is only 1 20 of the power frequency welding machine, and the current can reach the set value faster, analyze the parameters more accurately, and the welding quality control is more accurate.

4. The three-phase load of the intermediate frequency spot welding machine is balanced, the power factor is high (left and right), and the energy saving is energy-saving. However, it is difficult to ensure the balance between phase voltages when working in two-phase power frequency welding machine, and the power factor is low (left and right), while it is difficult to achieve constant current output in three-phase power frequency welding machine.

5. The intermediate frequency spot welding machine is suitable for the welding of a variety of materials and dissimilar metals, such as aluminum alloy, stainless steel, high strength steel plate and other materials. In addition, for the welding of galvanized sheet and ordinary multi-layer sheet, the welding quality is much higher than that of the power frequency welding machine. The power frequency welding machine is only suitable for materials with good welding performance, such as mild steel plates.

1. Operating procedures:

1. Only those who are familiar with the operation of this machine can operate and use it.

2. The machine is placed in a ventilated and dry place to ensure that the machine is in a horizontal position.

3. According to the welding needs, add an appropriate amount of clean water to the sink (the water surface exceeds the booster pump).

4. Check whether the power cord is properly connected and whether there is any loosening phenomenon to ensure safety.

5. Welding process:

1) The operator must wear clear glasses to operate.

2) Turn on the power supply of the booster pump first, and wait for water to flow out of the water outlet.

3) Close the power switch of the welding machine, close the air switch on the rear panel of the equipment (this switch should be operated as little as possible to prolong the life), and turn on the power switch on the front panel.

4) Adjust the position of the welding tooling (or the position of the induction coil), put the welded workpiece into the induction coil, step on the foot switch (step on the foot after leaving the foot switch) The welding machine starts, and the "flute" sound is sounded, and the time relay starts timing welding.

5) The welding is over when the time relay stops working, and the blower begins to air cool the welding part, observe the air cooling, and then remove the workpiece.

6. Stop the welding (shutdown) process

1) Turn off the power switch in front of the device.

2) Turn off the knife switch of the equipment.

3) When the temperature of the outlet becomes cold, then turn off the water source.

2. Precautions:

1. When the temperature is lower than 0 degrees, all the water in the machine must be drained after each use, so as not to freeze and crack the water pipe in the machine.

2. Water must be connected first, and then electricity must be turned on. The inside of the machine and the induction coil must be cooled by water, and the water source must be clean (change the water regularly) to avoid blocking the cooling pipe, and the water outlet temperature should not be higher than 50 degrees, otherwise it will cause the machine to overheat and damage.

3. The equipment should be repaired by professionals.

The operation of the high-frequency welding machine is divided into 4 steps and 2 steps, and the 4 steps are: the pressure welding torch switches up the high-frequency arc, releases the switch to continue welding, and enters the attenuation state until the arc is broken, and then releases the switch. The second step is: high-frequency arc welding of the pressure switch, and the arc breaking of the loose switch.