|
|
| The manufacturing process for aluminum housing and building materials is broadly divided into melting, casting, extrusion, surface finishing and processing and assembly. Each process requires vast amounts of equipment and advanced technologies. |
|
 |
 |
|
| Aluminum ingots are melted at about 1,100˚C (2,012˚F) in the melting furnace. Then, magnesium and silicon are added to the aluminum holding furnace, and finally, the mixture is processed into aluminum alloy that meets the JIS standards |
|
|
 |
 |
|
| Aluminum alloy is injected into the mold and then quenched (cooled). Molten metal solidifies into columnshaped billets. The photo shows hooked billets that are 6m (19.7ft) long. |
|
|
 |
 |
|
| Dies, used for extruding metals, are manufactured through electrode fabrication and computer-programmed wire electric discharge processing. |
|
|
 |
 |
|
| Billets are cut into 50cm (19.7in) to 90cm (35.4in) long pieces and heated to about 500˚C (932˚F), and extruded into 50m (164ft) to 60m (196. 9ft) long bars at about 200 (392) to 300˚C (572˚F). The bar size is precisely adjusted with stretchers. |
|
|
 |
 |
|
| This process is controlled by computers in the control room. Materials are delivered automatically to each liquid tank for degreasing, etching, anodizing and coloring. Finally, they are baked and dried. |
|
|
 |
 |
|
| After surface finishing, materials are cut into standard sizes, assembled in the processing assembly line, where sash rollers and other parts are installed in the sash, and then bound and packaged. The finished products are forwarded to the distribution centers. |
|
|
 |
|
