Raw material magnetism
Most of the clamps are made of different grades of stainless steel. Usually, customers will use magnets to detect the quality of the material. If there is magnetism, the material is not good. In fact, the opposite is true. Magnetism means that the raw material has high hardness and high strength. . Because the currently made clamps are usually made of austenitic stainless steel such as 201, 301, 304, and 316, after heat treatment, the raw materials can be completely non-magnetic, but the raw materials used to produce the clamps must meet the hardness and tensile strength of the product itself. , So the hardness and tensile strength can only be met by the cold rolling process, which requires the soft material to be rolled into a thinner cold-rolled strip. After cold-rolling, they will indeed become harder and also generate a magnetic field.
The role of lubrication screws
At present, the galvanized layer on the surface of carbon steel plated screws plays a lubricating role. Most steel screws in DIN3017 clamps are also galvanized, which can play a lubricating role. If you do not need zinc plating, you need wax compound as a lubricant. At any time, the wax compound will be dried, the temperature during transportation or the harsh environment will cause the loss, so the lubrication will decline, so it is recommended that the steel screw is also galvanized.
T-bolt clamp with spring
T-bolt clamp with spring are commonly used in heavy truck coolant and charge air systems. The purpose of the spring is to mediate the expansion and contraction of the hose connection. Therefore, when installing this clamp, you must pay attention to the end of the spring can not be completely down. If there are exactly two problems in the end: one is that the spring loses its function of mediating thermal expansion and contraction and becomes a solid spacer; although this may shrink somewhat, there is absolutely no way to adjust to thermal expansion and contraction. The second is the heating of the fastening system, the hose will have excessive fastening pressure, damage the pipe fittings, and greatly reduce the service life of the fastening system.