Special-shaped magnet processing process is a fine and multi-step process, the following will introduce its main process in detail:
1. Raw material preparation: The raw materials of special-shaped magnet usually include iron oxide, nickel, cobalt, barium, aluminum and other metal oxides. In the stage of raw material preparation, it is necessary to accurately control the proportion and particle size of various raw materials to ensure the magnetic and mechanical properties of magnets.
2. Pressing and forming: mixing and pressing the prepared raw materials to form a powder metallurgy blank with a required shape. In order to ensure the density and shape accuracy of the billet, it is necessary to control the parameters such as pressure, time and temperature in the pressing process.
3. high temperature sintering: putting the pressed powder metallurgy blank into a high temperature sintering furnace, and combining the particles into a solid block through heat treatment to obtain the required magnetic properties.During the sintering process, the parameters such as temperature, atmosphere and time need to be strictly controlled to ensure the magnetic and mechanical properties of the magnet.
4. Precision machining: The sintered special-shaped magnet needs precision machining such as cutting, grinding and drilling to meet the requirements of customers for shape accuracy and surface quality. This process requires the use of specialized processing equipment and processes, such as wire cutting, electrical discharge machining, and requires precise control of the processing parameters.
5. Magnetization treatment: mark both sides of the magnetic field of the special-shaped magnet by a magnetizer to achieve the required magnetic strength. In the process of magnetization, it is necessary to control the magnetic field intensity, direction and time to ensure the magnetic properties of the magnet.
6. Inspection and packaging: carry out strict magnetic inspection, appearance inspection and size inspection on the processed special-shaped magnets to ensure that the products meet customer requirements. It is then cleaned, packaged and provided to customers for use.In the whole process flow of special-shaped magnet processing, each step needs fine operation and strict control of parameters to ensure the quality and performance of products.
