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Jiangxi National Rare Earth Group Production Base: Graphite Crucible Spraying Zirconia Coating Production Line
Release time:
2023-09-14 19:39
Source:
Jiangxi National Rare Earth Group Production Base: Graphite Crucible Spraying Zirconia Coating Production Line
The graphite crucible spraying zirconia coating production line for sintering rare-earth materials, supplied by Guangzhou Sanxin Company, is being used at the production base of Jiangxi National Rare Earth Group.
Zirconium dioxide, chemically known as zirconia, has the molecular formula ZrO2. It is the primary oxide of zirconium. In nature, minerals containing zirconium include mainly baddeleyite and zircon. Under normal conditions, zirconia appears as a white, odorless, and tasteless crystal that is poorly soluble in water, hydrochloric acid, and dilute sulfuric acid. It exhibits excellent chemical stability and possesses several remarkable properties, including high hardness, high melting point, high electrical resistivity, high refractive index, and a low coefficient of thermal expansion. As a result, zirconia has found extensive applications across a wide range of fields, including wear-resistant ceramics, refractory materials, mechanical engineering, electronics, optics, aerospace, biomedicine, chemistry, and many others. Commonly encountered items such as synthetic diamonds and dental implants also predominantly use zirconia as their primary material.
1. High Hardness: The hardness of zirconia products typically reaches above 7.5 on the Mohs scale, and some zirconia ceramic products can even exceed a hardness of 9—second only to diamond. High hardness means that these materials possess excellent wear resistance; therefore, zirconia ceramics are outstanding abrasion-resistant materials.
2. High Melting Point: Zirconia has a melting point as high as 2715℃ and exhibits excellent chemical stability, making it an outstanding refractory material.
3. Low thermal conductivity and low thermal expansion coefficient: Zirconia has one of the lowest thermal conductivities among common materials (1.6–2.03 W/(m·K)), and its thermal expansion coefficient is close to that of metals. Therefore, zirconia ceramics are well-suited for use as structural ceramic materials, such as exterior structural components for zirconia-ceramic mobile phones.
4. Special Conductivity: At room temperature, zirconia is non-conductive and has an extremely high resistivity. However, in high-temperature environments, zirconia exhibits a certain degree of conductivity. Leveraging this principle, zirconia is also used in many electronic devices.
Relevant Information
The complete set of plasma-sprayed equipment has been shipped to the customer’s site in Thailand.
Core spraying equipment: SX-80 plasma spray main unit, with a 15,000℃ flame suitable for multiple materials including zirconia and silicon carbide; powder feeding accuracy of ±1%, and coating thickness tolerance ≤ ±5 μm. Environmental protection support system: Customized soundproof booth + pulse dust collector—effectively addressing spray noise pollution while achieving highly efficient dust recovery, compliant with Thai environmental standards. Automated equipment: 6-axis industrial robot + intelligent spray cart, enabling precise spraying of complex workpieces and automated loading/unloading, boosting production efficiency by 40%.
On-site engineers provide hands-on training, focusing on the core operations of plasma spraying equipment such as the SX-80. Sanxin has customized a complete solution for its customers, including an automated spraying robotic arm, a soundproof booth, and a dust removal system—ensuring both high spraying efficiency and compliance with environmental standards.
Guangzhou Sanxin Thermal Spraying Turntable Shipment
Guangzhou Sanxin Company manufactures single-station and multi-station thermal spray turntables, which can be paired with plasma equipment, supersonic equipment, and arc equipment. We offer rapid, customized production tailored to customer requirements and product dimensions. A thermal spray turntable is a high-precision rotary worktable specifically designed for thermal spraying processes—including flame spraying, plasma spraying, and arc spraying. By providing controllable rotational speed and exceptional stability, it ensures uniform coating thickness on the workpiece surface, thereby enhancing spraying efficiency and quality.
SX-80 plasma equipment is being used at a customer site in Russia.
SX-80 plasma equipment is being used at a customer site in Russia.
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