Electrolytic purification technology involves the process of electrolysis using an electrolytic solution. In this process, crude metal serves as the anode, and pure metal acts as the cathode, with a solution containing metal ions as the electrolyte. During electrolysis, impurities and inert substances in the crude metal cannot dissolve and eventually form anode mud that deposits at the bottom of the electrolytic cell. Although active impurities dissolve at the anode, they cannot precipitate at the cathode, ensuring that the metal deposited on the cathode is of high purity.

This technology is widely used for refining various metals such as copper, cobalt, nickel, gold, silver, platinum, iron, lead, antimony, tin, and bismuth. By using this technique, impurities in the metal can be effectively removed, resulting in high-purity metal materials.

Vacuum arc melting technology operates in a vacuum environment, where arc discharge generates a plasma zone to achieve high-temperature metal melting. The joule heat produced by the arc discharge continuously melts the consumable electrode, which then crystallizes and forms ingots during the melting process. This technology features high-temperature and fast melting, effectively removing gas impurities from the metal. Additionally, since the molten metal does not contact refractory materials, it reduces metal inclusions.

As a result, vacuum arc melting is widely used in the production of steel, especially high-alloy steel, titanium and titanium alloys, as well as refractory active metals.

Zone refining technology involves the local heating of an ingot to create a narrow molten zone, which then moves slowly along the ingot. By controlling the distribution of impurities during the melting and solidifying processes and leveraging the differences in solubility between the solid and liquid states, impurities are precisely removed. This method is known as zone melting. Zone refining is a critical application in metallurgy, particularly in the preparation of semiconductor materials, high-purity metals, inorganic compounds, and organic compounds. It is commonly used for preparing elements such as aluminum, gallium, antimony, copper, iron, silver, tellurium, and boron, and can purify some inorganic and organic compounds.

Gas atomization powder technology uses nitrogen or argon gas to strike a stream of molten metal, creating tiny droplets. As these metal droplets cool during landing, they form spherical metal powders. Metal powders produced by gas atomization have the following characteristics:

• Good sphericity and flowability, with high surface gloss
• High bulk density and tap density
• High purity, with low oxygen content
• No segregation during transportation and mixing
• Customizable particle size distribution based on customer requirements

This technology is suitable for industries that require high-quality powders, ensuring the production of metal powders that meet precise specifications.

Hot pressing technology involves filling a mold with dry powder and simultaneously applying pressure and heat in a uniaxial direction to complete forming and sintering. During the hot pressing process, the powder is in a thermoplastic state, which facilitates particle contact diffusion, flow, and mass transfer, requiring only one-tenth of the pressure needed for cold pressing. This method not only lowers the sintering temperature and shortens the sintering time but also effectively inhibits grain growth, producing fine-grained, high-density products with excellent mechanical and electrical properties.

Hot pressing technology is mainly used for sintering metal composite materials or ceramic powder composite materials, such as alumina, ferrite, boron carbide, and boron nitride engineering ceramics.

Thermal spraying technology uses heat sources such as electric arcs, plasma arcs, and flames to heat, melt, or soften spray materials. These materials are atomized under the heat and then accelerated by the power of the spraying equipment or external airflow, evenly coating the work surface. The spray materials and the workpiece surface form a composite coating through physical changes and chemical reactions.

This technology can be applied to almost all solid engineering materials, such as hard alloys, ceramics, metals, graphite, and nylon. Thermal spraying can provide various special functional coatings for workpiece surfaces, such as wear-resistant layers.