Servo Motor Robotic Aluminum Welding Systems 10kg Max Payload Vertical Mounting

Aluminum Robotic Welding Systems Servo Motor 10kg Max Payload Vertical Mounting

Robotic aluminum welding introduction

If the welded part is aluminum and the surface of the aluminum has an oxide film, preparation before welding is also very important.

1. When welding aluminum and aluminum alloys before welding, the oxide film and oil stain on the workpiece weld and the surface of the wire should be strictly removed before welding. The quality of the cleaning directly affects the welding process and joint quality, such as the tendency of the weld porosity and mechanical properties. Chemical cleaning and mechanical cleaning are often used.

1) Chemical cleaning

Chemical cleaning has high efficiency and stable quality, and is suitable for cleaning welding wire and workpieces with small size and batch production. Both the dip method and the scrub method can be used. It can be degreased on the surface of organic solvents such as acetone, gasoline, kerosene, etc., and washed with 5% ~ 10% NaOH solution at 40 °C ~ 70 °C for 3 min ~ 7 min (pure aluminum time is slightly longer but not more than 20 min), flowing water rinse Then, pickle with a 30% HNO3 solution at room temperature to 60 ° C for 1 min to 3 min, rinse with running water, air dry or dry at low temperature.

2) Mechanical cleaning

Mechanical cleaning is often used when the workpiece size is large, the production cycle is long, and after multi-layer welding or chemical cleaning. First wipe the surface with an organic solvent such as acetone or gasoline to remove the oil, and then directly brush it with a copper wire brush or a stainless steel wire brush with a diameter of 0.15 mm to 0.2 mm until the metal luster is exposed. Generally, it is not suitable to use a grinding wheel or ordinary sandpaper to prevent the sand from remaining on the metal surface. When welding, it enters the molten pool to produce defects such as slag inclusion. In addition, the surface to be welded can also be cleaned by a scraper, a file.

After the workpiece and the wire are cleaned and cleaned, an oxide film is regenerated during storage, especially in a humid environment where the oxide film grows faster in an environment contaminated by acids, alkalis. Therefore, the storage time of the workpiece and the wire after cleaning and cleaning to the welding should be as short as possible. In the case of humid climate, the welding should generally be carried out within 4 hours after cleaning. If the storage time is too long after cleaning (for example, more than 24 hours), it should be reprocessed.

2. Backing plate Aluminum and aluminum alloy have low strength at high temperature, and the liquid aluminum has good flowability, and the weld metal is liable to collapse under welding. In order to ensure penetration and no collapse, the backing plate is used to support the molten pool and nearby metal. The backing plate may be a graphite plate, a stainless steel plate, a carbon steel plate, a copper plate or a copper rod. A circular arc groove is formed on the surface of the pad to ensure the back surface of the weld. It is also possible to mold double-sided molding without padding, but it requires skilled welding operations or advanced technological measures such as strict automatic feedback control for arc welding energy.

3. Pre - heating thin and small aluminum parts before welding are generally not preheated. Pre - weld preheating can be carried out when the thickness is 10 mm ~ 15 mm. According to different types of aluminum alloy preheating temperature can be 100 °C  ~  200 °C, available oxygen Heating with an acetylene flame, an electric furnace or a blowtorch. Preheating can reduce the deformation of the weldment and reduce defects such as pores.

Robotic aluminum welding specification

Robotic aluminum welding manufacturer

Robotic aluminum welding power source