What kinds of processing technologies are there for hardware?

There are painting treatment, electroplating, surface polishing treatment, hardware corrosion treatment, die casting (die casting is divided into cold pressing and hot pressing), stamping, sand turning, investment casting and other processes.

Die casting is a metal casting process, which is characterized by applying high pressure to molten metal by using the inner cavity of the die. Mold is usually made of higher strength alloy, which is somewhat similar to injection molding. Most die-casting castings are iron-free, such as zinc, copper, aluminum, magnesium, lead, tin and lead-tin alloys and their alloys. According to the different types of die casting, it is necessary to use cold chamber die casting machine or hot chamber die casting machine.

The cost of casting equipment and molds is high, so the die casting process is generally only used to manufacture a large number of products in batches.

1, spray painting processing: the hardware factory uses spray painting processing when producing large-sized finished hardware, so that the hardware can avoid rusting through spray painting processing, such as daily necessities, electrical housings, handicrafts, etc.

2. Electroplating: Electroplating is also the most common processing technology for hardware processing. The surface of hardware is electroplated by modern technology to ensure that the product will not be moldy and embroidered after long-term use. Common electroplating processes include: screws, stamping parts, battery pieces, automobile parts, trinkets and so on.

3, surface polishing: surface polishing is generally used for daily necessities for a long time, through the surface burr treatment of hardware products, for example, we produce a comb, the comb is perforated hardware, then the corners of the perforated comb are very sharp, so we have to polish the sharp parts of the corners into smooth surfaces, so that it will not cause harm to the human body during use.

Baidu encyclopedia hardware process