Die casting is a metal casting process characterized by the use of a mold cavity to apply high pressure to molten metal. Molds are usually machined from stronger alloys, a process somewhat similar to injection molding. Most die castings are free of iron, such as zinc, copper, aluminum, magnesium, lead, tin, and lead-tin alloys and their alloys. Depending on the type of die casting, a cold chamber die casting machine or a hot chamber die casting machine is required.

Injection molding, also known as injection molding, is a molding method of injection and molding. The advantages of the injection molding method are that the production speed is fast, the efficiency is high, the operation can be automated, there are many varieties of colors, the shape can be from simple to complex, the size can be from large to small, and the size of the product is accurate, the product is easy to replace, and it can be formed into complex shapes. Parts, injection molding is suitable for mass production and complex shape products and other molding processing fields.

Sheet metal, a processing technology, has not yet had a relatively complete definition of sheet metal. According to a definition in a foreign professional journal, it can be defined as: Sheet metal is a comprehensive cold working process for metal sheets (usually below 6mm), including shearing, punching/cutting/compounding, folding, riveting, splicing, Forming (such as car body), etc. Its remarkable feature is that the thickness of the same part is the same.

Ordinary printers used in daily life can print flat objects designed by computers, and the so-called 3D printers work basically the same as ordinary printers, but the printing materials are slightly different. The printing materials of ordinary printers are ink and paper, while 3D printers are equipped with metal , ceramics, plastics, sand and other different "printing materials" are real raw materials. After the printer is connected to the computer, the "printing materials" can be superimposed layer by layer through computer control, and finally the blueprint on the computer becomes real.

3D printing (3DP) is a kind of rapid prototyping technology, also known as additive manufacturing. It is a digital model file based, using powder metal or plastic and other bondable materials to construct layer by layer printing. object technology.

When the machining parts are changed, generally only the NC program needs to be changed, which can save production preparation time

Computer numerical control machine tool is an automatic machine tool equipped with a program control system. The control system can logically process the program specified by the control code or other symbolic instructions, and decode it, so as to make the machine tool move and process the parts.

CNC is also called computer gong, CNCCH or CNC machine tool. It is a new type of processing technology, and its main work is to compile processing programs, that is, to convert the original manual work into computer programming. Of course, manual processing experience is required

The main alloy elements in aluminum 3.3211/en-aw6061 are magnesium and silicon, containing trace copper.

Aluminum 3.4365/en-aw7075 has high strength (57MPa), high toughness and excellent fatigue resistance. Excellent machinability.