HZDH Precision Technology Group is a diversified Sino-Japanese joint venture. It manages more than 30 companies in China and globally, providing domestic and international customers with world-class materials, devices, equipment and system solutions. It has built a global marketing network, and has established companies and offices in China, Japan, the United States, Germany, France, Italy, Spain, Russia, South Korea, Malaysia and some other places. It is a multinational group with a number of high-end production technologies.
HZDH is an internationally renowned supplier of semiconductor products and solutions. It is engaged in the research, development, manufacturing and sales of ferrofluidic sealing parts, semiconductor silicon wafers, thermoelectric semiconductor cooling materials and devices, semiconductor quartz products, precision ceramics, semiconductor vacuum feedthroughs and large chambers, solar power generation materials, electron beam evaporation and coating machines.
The products cover a wide range of application fields: electronics, semiconductors, mechanical processing, solar power generation, automotive/new energy vehicles, aerospace, household appliances and medical equipment, etc.
Magnetic Fluid
Magnetic fluid is a functional material attracted to magnets and magnetized by external magnetic fields. In the 1960's NASA Space Program, it was developed to transport fuel in zero gravity. Currently it is used in speakers, actuators, sensors, recycling separation applications, and also in vacuum seals, one of our company's core products.
For Loudspeakers, Seals, Experiments and Educators
Magnetic fluids are uniquely optimized to maximize performance in specific applications. Within each product series, you’ll find that each product family offers a number of different magnetic fluids with a variety of material properties and performance characteristics.
For More Efficient Audio Speakers
As the global leader in magnetic fluid products, HZDH has been supplying magnetic fluid to audio speaker manufacturers since the early 1980s. The audio magnetic fluid enables audio speakers to function more efficiently, with improved audio response and better power handling. For audio speaker manufacturers, The magnetic fluid also provides significantly better speaker manufacturability for improved quality and higher manufacturing yields.
Audio magnetic fluids are based on two classes of carrier liquid: synthetic hydrocarbons and esters. Both oils possess very low volatility and high thermal stability. The choice of fluid is dictated by the environmental considerations of the application (eg humidity, adhesives, contact with water , solvent vapors and reactive gases) combined with the best balance of magnetization and viscosity values to optimize the acoustical performance.
HZDH highly refined manufacturing process, combined with a long term quality assurance program is the key to its repeatable, reproducible product quality. Our ferrofluid manufacturing facility in Japan is both ISO 9001 and ISO 14001 certified.
By varying the quantity of magnetic material in a magnetic fluid, and by using different carrier liquids, it can be tailored to meet a variety of needs. The saturation magnetization (the maximum value of the magnetic moment per unit volume when all the domains are aligned ) is determined by the nature of the suspended magnetic material and by the volumetric loading of the material. The physical and chemical properties such as density and viscosity correspond closely to those of the carrier liquid.
Standard Magnetic Fluid for Specialized Applications
Initially developed through our efforts pioneering emerging markets and applications for magnetic fluid, The magnetic fluid draws upon years of magnetic particle and carrier liquid research to offer a family of standard ferrofluids that have successfully used in specialized applications. The magnetic fluid are commonly used for bio -medical, domain detection and other emerging technology applications.
The magnetic fluids are available in three different carrier options, so you can select from water-based, oil-based, or powder ferrofluids depending upon your application requirements.
Optimized for the the Most Intense Performance Requirements
As the industry leader in magnetic fluid seals and vacuum rotary feedthroughs, HZDH is widely recognized for quality and performance of the magnetic fluid that we use in our seals. With over thirty years of experience producing seals for the world's most demanding applications, we have been able to optimize our ferrofluid products for the most intense performance requirements.
Because we produce our own magnetic fluid, The products can be optimized to the unique demands of target applications. This enables HZDH solutions to outperform competitive products in the most demanding, high-precision applications.