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Aluminum alloy doors and windows refer to the doors and windows made of aluminum alloy extruded profiles as frames, stiles, and fan materials. They are called aluminum alloy doors and windows, or aluminum doors and windows for short. Aluminum alloy doors and windows are mainly made of aluminum alloy as the base material, supplemented by wood and plastic, referred to as aluminum-wood composite doors and windows, aluminum-plastic composite doors and windows (as shown below). According to statistics, there are more than 10,000 domestic aluminum alloy doors and windows enterprises, mainly distributed in large and medium-sized cities in southern and middle China. It has formed a primary platform for production and marketing interaction, and also created conditions for the development of aluminum alloy doors and windows.
Aluminum alloy doors and windows were fixed and connected by riveting in the past. When used for a long time, there will be gaps at the joints, which affects the appearance, and causes problems such as air and water leakage, and poor thermal insulation. If the welding method has been used, the following problems have been difficult to solve: aluminum alloy doors and windows have been fixed and connected by riveting in the past. When used for a long time, there will be gaps at the joints, which will affect the appearance, and will also cause problems such as air leakage and poor thermal insulation. image 3). If the welding method is used, the following problems have been difficult to solve:
① The current board thickness of the customer is between 1.0mm-1.5mm, the board is thin, and it will be easy to weld through when there is a gap in the pair.
② When the original welding machine is welding in the small current section, there are many air holes in the weld.
③ The original workpiece of the customer has poor fusion on both sides of the weld and low strength of the workpiece.
④ The welding speed is slow, and the welding efficiency is difficult to improve.
⑤ The splash is large, and the subsequent grinding workload is large, which affects the overall appearance.
Megmeet recommends welding equipment and solutions
According to the actual situation of the customer, it is recommended to use McGemett Dex PM3000 welding machine, which adopts the pulse aluminum welding process. Dex PM3000 is an all-digital high-frequency intelligent inverter welding machine that can perform DC and pulse all-position welding of carbon steel, stainless steel, aluminum alloy and other materials. This welding machine has the following advantages to solve customer problems:
① Using a new control scheme, the arc starting is gentle, the welding is stable, the forming is consistent, and the spatter is low.
② The arc starting and closing are stable and fast, the arc energy is concentrated, the fusion is deep, and the welding speed is fast.
③ A variety of aluminum welding expert systems are stored inside, and the parameters of each phase of pulse welding are opened, and fine-tuning is performed according to the working conditions on site to obtain high-quality welding results.
④ The wire feeder is provided with code disc feedback, 4 wheels double drive, stable wire feed and stable welding.
The use of McGemett Dex PM3000 with robot welding has greatly improved production efficiency, and the welding speed has reached 0.6 m / min. The welding seam is formed uniformly and uniformly, with white and bright colors, the two sides are flush and beautiful, no surface defects such as pores and undercuts, and the spatter is extremely low during the welding process, and the one-time pass rate reaches 98%.