1. Venom magnetic fluid is a complex material, and it is not easy to make it successfully. 2. To make venom magnetic fluid, powder particles need to be heated to a high temperature to decompose into gas-phase intermediates, and then be restored to the part belonging to magnetic fluid by a certain method, and finally venom magnetic fluid is made. 3. The actual operation needs to follow the production steps carefully, and at the same time, the conditions of the production process need to be carefully controlled, otherwise it will easily lead to failure.

　　Venom magnetic fluid is a composite material composed of magnetic nanoparticles and liquid carrier. There are two main methods for preparing venom magnetic fluid:

　　One is chemical synthesis, that is, magnetic nanoparticles are synthesized by chemical reaction and then dispersed in liquid carrier; The other is physical method, that is, magnetic nanoparticles are mixed with liquid carrier by mechanical grinding or solvothermal method. It is necessary to control the particle size and dispersion of magnetic nanoparticles and the stability and fluidity of liquid carrier to ensure the performance and application effect of venom magnetic fluid.

　　Hello, venom magnetic fluid is a kind of magnetic fluid which is mixed by magnetic liquid and venom (commonly iron nitrate). The manufacturing method is as follows:

　　Materials:

　　 Magnetic liquid (such as magnetic oil)

　　 Venom (such as iron nitrate)

　　 bar magnet

　　 thermometer

　　 crucible

　　 source of fire

　　Steps:

　　1. Pour the magnetic liquid into a crucible and heat it to a proper temperature under a fire source.

　　2. Slowly drop the venom into the crucible, and at the same time stir the liquid in the crucible with a magnetic bar to make it mix evenly.

　　3. Stir the liquid continuously until it cools to room temperature.

　　4. Use a magnetic bar to test whether the magnetic fluid has enough magnetism.

　　Precautions:

　　1. Venom is highly corrosive and toxic, so it is necessary to pay attention to safe operation and proper disposal of waste liquid.

　　2. The temperature and dropping speed should be strictly controlled in the production process to ensure the mixing effect and quality.

　　3. The magnetic strength and stability of magnetic fluid are related to material quality, mixing ratio and manufacturing process, and need to be tested and optimized.