1) Aluminum-based aluminum is one of the non-ferrous metals in the metal category. As a result of the wide application, the following are introduced: Aluminum and die-cast aluminum are commonly used. Which mainly by the purity of more than 92% of the aluminum ingots as the main raw material, while adding to increase the strength, hardness, wear resistance and other properties of metal elements such as carbon, magnesium, silicon, sulfur, composed of a variety of components "alloy."
1.1 aluminum profiles are common such as screens, aluminum windows and so on. It is the use of extrusion molding process, that is, aluminum ingots and other raw materials in the furnace after melting, extruded through the extruder to die out of molding, it can also be extruded in a variety of cross-section profiles. The main performance is the strength, hardness, wear resistance according to national standards GB6063. Advantages are: light weight only 2.8, no rust, design changes fast, low mold input, vertical elongation up to 10 meters above. Aluminum appearance of bright, matte of the points, the treatment process using anodized, the surface treatment of oxide film to 0.12m / m thickness. Aluminum wall thickness according to product design optimization to choose, not the thicker the better the market, should look at the cross-section structure requirements for design, it can be 0.5 ~ 5mm uneven. Lay people think the thicker the more tough, in fact, the wrong view. Aluminum surface quality is also more difficult to overcome the defects: warping, deformation, black lines, convex and white and white line. The designer level and the mold design and production process is reasonable, to avoid the above-mentioned defects are not obvious. Check the defects should be carried out according to national inspection methods, that is, the line of sight 40 ~ 50CM to identify defects. Aluminum profiles in the use of a wide range of furniture: screen skeleton, a variety of hanging beams, table feet, decorative strips, handles, cable trough and cover, chair tube, etc., can be ever-changing design and use! Although the advantages of aluminum, but there are also unsatisfactory places: non-oxidation of aluminum is easy to "rust" which led to performance degradation, the longitudinal strength than iron products. Surface oxide wear resistance than plating Layer is easy to scratch. The cost is higher, relative to the cost of iron products 3 to 4 times higher.
1.2 die-casting aluminum alloy die-casting alloy and profile processing methods compared to the use of equipment are different, its raw materials to aluminum ingots (purity of about 92%) and alloy materials, melting through the furnace into the die casting machine mold forming. Die-casting aluminum products can be designed as imaging toys, modeling different, easy to connect in all directions, in addition, it is high hardness, and can be mixed with zinc into zinc alloy. Die-casting aluminum production process, the mold should be able to manufacture, the mold cost is very expensive, than the injection mold and other molds, die-casting aluminum production process, Are high. At the same time, mold maintenance is very difficult to design errors when difficult to cut the material repair. Die-casting aluminum Disadvantages: the number of production and processing should be more, the cost is low. Polishing more complex production cycle slow product cost higher than the injection of 3 to 4 times. Screw hole requirements should be a little larger (diameter 4.5mm) connecting force to stabilize the scope of adaptation: Taiwan feet, class Taiwan connection, decorative head, aluminum seal pieces, table and coffee table top care, a wide range.
(2) Hardware "hardware" concept is popular, the standard classification should be divided into two categories of ferrous metals and nonferrous metals, it is used in the furniture tubular, rod, plate, line, angular several.
2.1 black metal parts mainly iron products, it has the advantage: resistance to deformation, high strength, good wear resistance, high hardness, low price, long life. Is a carbon iron alloy, it is divided into high carbon steel, low carbon steel, carbon steel; it sub-tube, square tube, angle iron, steel several categories. Pipe is mainly used for table bricks, screens, pendants, arm, metal cabinets, doors and so on. Iron and steel products Disadvantages: 1, easy to rust 2, the volume of heavy 3, afraid of wet solution to the above defect methods are electroplating, spraying, black hair blue treatment. Hardware processing and molding methods are more: bending, punching, drilling, welding, cutting, pressure shape. In short, according to the design requirements or product requirements for processing.