Solar container module extrusion welding tooling requirements

What is the environment temperature of a multi-container extrusion tool?

Environment temperature was set as a constant value of 20 °C. In the FE simulation of the multi-container extrusion, the initial temperatures of billets and extrusion tools were set to be 480 °C and 450 °C respectively, and the ram speed was 0.5, 1, and 2 mm/s.

How can a multi-container extrusion improve welding quality?

Besides, the modified design of the multi-container extrusion can obtain better welding quality evaluated by different welding criteria, and the extrusion speed has a minor effect on the welding quality.

What is a multi-container extrusion?

The principle of using the multi-container extrusion to reduce the extrusion force is that multiple billets are extruded into channels of the upper die, then welded together in the welding chamber, and finally form integral large panels with stiffeners.

What are the dimensions of the extrusion container?

The width and height of the extrusion container and both dies are 350 mm and 230 mm. The thickness of the upper die is 50 mm. Channels in the upper die are spreading structures, as can be seen in Fig. 2 b. The height and overall width of the channel outlet are 38 mm and 220 mm, which are the same as that of the welding chamber in the lower die.

How to evaluate a multi-container extrusion die design?

In the multi-container extrusion, the welding quality of the product is one of the most important factors to evaluate the extrusion die design. In the QForm software, the pressure p has the same absolute value as the mean stress σm, but they are opposite in sign. Figure 8 shows the mean stress distribution on the welding plane between two billets.

Can modified extrusion dies be used for multi-container extruded aluminium panels?

In the present work, modified extrusion dies were designed for the multi-container extrusion in order to reduce material waste and improve the metal flow uniformity and welding quality. The extrusion processes using the initial dies and the modified dies for wide stiffened aluminium panels were investigated numerically.