In mechanical manufacturing, the seal of the shaft and the body usually uses oily seal of rubber or other elastic materials. This structure has a short life span and poor reliability. It is even more unsuitable for occasions with radioactivity, corrosion, toxic and friction. However, as long as there are several drops of iron magnetic liquids between the shaft and the body, keep them there and then use a ring magnet to magnetize it, which becomes a liquid magnet seal.

The liquid magnet seal completely eliminates the contact between the shaft and the body, which greatly reduces friction. At the same time, because the consumption of the iron magnetic liquid is very small, it can work and reliable for a long time. If you use it to seal the vacuum device, it can keep the vacuum of 10 billion mm Hg, which can be described as seamless. All mechanical devices use lubricants to reduce friction. If the iron magnetic liquid lubricating oil is used, the common mechanical "swimming" can be avoided in oil. The method is to diamond the beads of the bearing. Due to the attractive effect of the drinker's magnetic field, it can not only save the iron magnetic solution, but also make it always work in the friction zone. This can reduce friction and improve the life of the bearings, and machinery will not produce noise.

People may ask: Since the iron magnetic particles are mixed in lubricating oil, will it not wear mechanical parts? No, because the size of the iron magnetic particles in lubricating oil is 10,000 times smaller than the particles of mechanical wear.

The proportion of the use of iron magnetic liquids will change with the characteristics of magnetization, which can be made into an ideal mineral selection machine. This minerals can not only take out all valuable substances from the poor ore, but also separate the different metal ore. grade.

Under the action of magnetic fields, the iron magnetic liquid can also change viscosity and can become "hard" together. This makes liquid magnets have a broader application prospect. For example, a automatic adjustment mechanism of a liquid magnet has appeared, which can adjust the elasticity of the car according to the condition of the road. When the liquid magnet is used to make the "hand" of the robot, it looks softer and flexible and can stabilize. The most interesting thing is that when using liquid magnets to tighten the complex parts of the machine tool processing, as long as the parts are placed in the iron magnetic liquid and the electromagnetic field is connected, the iron magnetic liquid will instantly thickened until it is solidified into hard stones. The parts are firmly tightened; when the processing is completed, the current is only required to be disconnected, and the iron magnetic liquid restores the normal state, and the parts can be taken out freely.