Argon arc welding machines and cold welding machines don’t just have one more time control.

Argon welding machine:

1. High current density, concentrated heat, high deposition rate and fast welding speed. In addition, it is easy to strike an arc. Protection needs to be strengthened because the arc light is strong and the smoke is large, so protection must be strengthened.

2. Argon arc welding has a large heat-affected area due to excessive current. After welding, the workpiece often causes deformation, reduced hardness, blisters, local annealing, cracking, pinholes, color difference, undercuts, and Internal stress damage and other shortcomings. Especially in the repair process of precision casting, small defects are highlighted on the surface.

3. Welding is more difficult for metals with low melting points and easy evaporation, such as copper, lead, tin, zinc and other materials.

So in the field of welding and repair of precision castings or other precision parts, it is recommended to use cold welding machines instead of argon arc welding.

Cold welding machine:

1. The M4 cold welding machine is a low-temperature fusion welding, not a temperatureless welding! The firmness of the welding joint is equivalent to the welding effect of mainstream welding machines on the market. For complete metallurgical welding, the hardness of the welding material can be selected, and the properties of the welding material and base metal will not be changed after welding;

2. The repair accuracy is high, and the welding wire with a diameter of 0.2mm to 2.0mm can be used. Wire welding will not produce welding defects such as deformation and undercut, thus retaining the original datum plane and making it easy to reshape later.

3. The repair speed is fast, and the fastest repair volume can reach 180mm3/min, which is almost as fast as argon welding.

4. Because of the principle of high-frequency discharge and instantaneous high temperature, the solder joints dissipate heat quickly, have a small heat-affected zone and a small amount of heat. After welding, the solder joints can be touched directly with fingers, so the base material will not be annealed and deformed. .

5. The voltage adapts to a wide range and uses a switching power supply. When the voltage changes within a range of ±20%, the machine can still operate normally and maintain stable output power.

6. When welding and repairing local parts of large workpieces, the laser welder is limited by the platform and cannot weld and repair. However, the argon arc welding machine cannot meet the welding repair requirements due to the high welding temperature and low precision. The M4 cold welding machine adopts a portable design, is simple to operate and flexible to use, and can weld workpieces under various complex working conditions to help you Solve the difficult problem of welding repair.