Medical spring: spring manufacturing and anti-corrosion problems, Tu's Cheng Fa precision to share with you!
Medical spring is a kind of spring, according to the nature of the load it bears, tensile spring belongs to the tension manufacturing principle. Coil springs subjected to axial stretching and stretching are generally made of materials with circular sections. In the case of no load, the stretch spring between the rings is generally tight and there is no gap. Spring is made by winding spring wire, and is widely used because it is easy to manufacture, low in price, and easy to detect and install. Medical respiratory equipment, motion control, medical mobile equipment, hand tools, home care equipment, shock absorption, pump springs, mechanical and electrical protection hardware, fluid control valves, actuators, switching equipment and other common parts.
As the medical spring is made of metal, it is necessary to pay attention to corrosion resistance and avoid fatigue in use. Oxidation treatment can make the hook spring of the shell have a certain corrosion resistance. After oxidation treatment, the hook spring can form a dense oxide film on the surface of the steel wire, which can prevent the corrosion of gunpowder gas. Oxidation treatment can reduce the friction of the hook spring. In the process of shooting, the hook spring is repeatedly stretched and compressed in the spring cavity, and at the same time it forms friction with the spring cavity, generating friction heat, which is also the reason for the early failure of the shell hook spring.
After the hook spring is oxidized, the small loose hole of the oxide film can store oil and lubricate the stretching spring. The thermal conductivity of the oxide film is much lower than that of the hook spring wire, which has a better thermal protection effect and is also conducive to preventing the early failure of the hook spring. Our manufacturers are generally in the tensile spring after oxidation treatment, after more than 40 life tests, the hook spring is not broken, practice has proved that the shell hook spring to take oxidation treatment can improve its service life.
