The market often says that "supply exceeds demand, supply exceeds demand" and so on. For magnets, it can be said that supply exceeds demand and supply exceeds demand. So for this situation, where should we go to buy magnets? The following is a brief introduction to the development process of magnets, hoping to bring you a certain degree of help. Development process: Humans discovered natural magnets (Fe3O4) 5000 years ago. Chinese people ground natural magnets into spoons and placed them on smooth surfaces. The first compass. 1000 years ago, the Chinese used magnets to rub magnetize with iron needles to make the world's earliest compass. Around 1100, China combined the magnet needle and the azimuth disk into a magnet compass for navigation.
1405-1432 Zheng He began his great pioneering work in human history with his compass. 1488-1521 Columbus, Gamma, Magellan made a world famous nautical discovery using a compass. 1600 The British William Gibb published a monograph on magnets, "Magnet", which developed the ancient Greeks Thales, Aristotle and other predecessors' knowledge and experiments on magnetism. 1785 French physicist C. Coulomb used twisting to establish the "Coulomb's Law" describing the force between charge and magnetic pole. 1820 Danish physicist H.C. Oster found that current induces magnetic forces. 1831 British physicist M. Faraday discovers the phenomenon of electromagnetic induction. 1873 British physicist J.C. Maxwell completes a unified electromagnetic theory in his monograph "On Electricity and Magnetism". 1967 Austrian physicist K.J. Snett in the United States discovered under the guidance of quantum magnetism
The most widely used NdFeB magnets and ferrite magnets are currently the most widely used. From the development history of magnets, from the end of the 19th century to the beginning of the 20th century, people mainly used carbon steel, tungsten steel, chromium steel and cobalt steel as permanent magnetic materials. 1930s In the late 1930s, the successful development of AlNiCo magnets made large-scale applications of magnets possible. The 1950s In the 1950s, the appearance of barium ferrite magnets not only reduced the cost of permanent magnets, but also extended the application range of permanent magnet materials to the high-frequency field. From the 1960s to the 1960s, the advent of samarium cobalt permanent magnets opened up a new era for the application of magnets. So far, rare earth permanent magnets have experienced the first generation of SmCo5, the second generation of precipitation hardening Sm2Co17, and the development of the third generation of Nd-Fe-B permanent magnet materials. At present, ferrite magnets are still the largest amount of permanent magnet materials, but the output value of neodymium iron boron magnets has greatly exceeded that of ferrite permanent magnet materials. The production of neodymium iron boron magnets has developed into a large industry. Xiamen everbeen Magnetic Industry Co., Ltd. is a high-tech enterprise specializing in the R & D, production and sales of rare earth permanent magnet materials, magnetic devices, magnetic tools and products related to magnetic materials. The company has passed ISO9001 system certification, and produces and sells rare earth permanent magnet products with various performances and shapes. In addition, the company is committed to the research and development, production and
Sales, to provide customers with high-quality magnetic components and magnetic tool products. At present, our company's NdFeB permanent magnet materials and magnetic components have been widely used in machinery processing, electro-acoustics, motors, instruments, automatic control, wind power generation, luggage, toys, craft jewelry and other fields. We are willing to develop together with customers at home and abroad and create a better future with a sincere attitude.
