With the continuous development of science and technology, the development of screw customization has also been a qualitative leap. Since the establishment of the screw manufacturers in 1989, there has been a certain foothold in the field of screws, from screw design, to open mold R&D, to production. . Non-standard screws are indispensable industrial necessities in daily life: tiny screws such as cameras, eyeglasses, watches, electronics, etc.; general screws for televisions, electrical products, musical instruments, and furniture; and engineering, construction, and bridges. Use large screws and nuts; transport equipment, airplanes, trams, cars, etc. The screw factory has its own design, research and development, customization, production, and after-sales and other perfect production management (guǎn lǐ) system.
Compared to standard screw fasteners, screws perform superior features in many ways. In the face of the huge demand of the market, we must keep up with the development of the times and keep up with the pace of social development. Screws are definitely the best weapon. This is also the reason that the screw manufacturers decided to go for the screw customization. The screw is basically not in stock and there is no stock. Because the screw is only applicable to a company or a product, it has uniqueness and specificity (shǔ xìng). When it is in production, the production engineering is also different from the production engineering of standard screws.
Such as screw moisture-proof method
1, as the use of screws in the vibration machinery as far as possible without solvent (character: transparent, colorless liquid) paint;
2. It is best to use impregnating lacquer that does not contain oxidizing components, such as Epoxy-urethane-based or Epoxy-based impregnating lacquer;
3, when using melamine acid dipping paint, what is the screw should adjust the curing temperature and curing time, curing temperature is slightly higher than 130 °C (such as 135 °C) and the curing time is more than 180min is appropriate, and must strictly implement the process, Especially in the hot and humid season, because of the concept of rust prevention, the spin-drying screen is not necessarily sufficient for the paint drying (curing) time specified in the sample of the paint factory. The motor has a specific inner shape;
4, the use of non-volatile acid paint;
5. Select (xuanze) paint with good hydrolysis resistance.
Control screw quality control techniques
The quality inspection of screws is generally considered from the appearance and quality of the plating, which is measured by the quality of the screw plating and corrosion resistance, and finally the appearance of the screws. Corrosion resistance is to set the test conditions first, and then conduct a corrosion test. The plating quality of the screw is controlled from the following two aspects (control)
First, the electroplating screw from the appearance of the surface of the product is not allowed to have partial non-plating, charred, rough, gray, from the skin, crust conditions and obvious stripes, does not allow pinholes, black slag, passivation film loose, Cracks, falls, and severe signs of inactivation. Non-standard screws are indispensable industrial necessities in daily life: tiny screws such as cameras, eyeglasses, watches, electronics, etc.; general screws for televisions, electrical products, musical instruments, and furniture; and engineering, construction, and bridges. Use large screws and nuts; transport equipment, airplanes, trams, cars, etc.
Second, electroplating screw coating thickness, coating surface should be smooth, thickness should be uniform, fastener corrosion in the corrosive atmosphere of the working life and its thickness is proportional to the coating, the general economic (electroplating plating is 4 ~ 12um, heat Zinc-plated screws, the standard average thickness is 54um, the minimum thickness is 43um, the above data (data) is for reference only. Non-standard screws utilize the physics and mathematics of the object's bevel circular rotation and friction, and progressively fasten the tool's tools. Screws are a common term for fasteners, spoken daily.