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What are the characteristics of ultra-hard tungsten carbide spraying?
Release time:
2020-11-20 12:00
Source:
Keywords: Tungsten Carbide Coating
Guangzhou Sanxin is here to share the features of ultra-hard tungsten carbide spraying.
Ultra-hard tungsten carbide coatings typically consist of covalently bonded compounds—such as carbides and nitrides—as well as elemental substances (e.g., diamond)—comprising elements from Groups III, IV, and V. These coatings can exist in various forms, including single crystals, polycrystals, and amorphous structures. Examples include diamond, cubic boron nitride (c-BN), carbon nitride (C3N4 and CNx), boron-carbon-nitride (BCN), and diamond-like carbon (DLC). Such coatings exhibit extremely high hardness, approaching that of natural diamond. Generally, the hardness of ultra-hard coatings exceeds 800 GPa; however, some researchers also classify covalently bonded compound coatings with hardness above 400 GPa as ultra-hard coatings. The hardness of diamond-like coatings varies considerably and is closely related to the proportion of sp3 bonds in their structure.
Tetragonal amorphous carbon TA-C, which contains no hydrogen, is often referred to as an amorphous diamond-like coating and is considered a superhard coating, whereas other diamond-like coatings are regarded as conventional hard coatings. With the exception of diamond, all these materials are synthetically produced and have no natural counterparts. Moreover, in recent years, nano-multilayer coatings and nanocrystalline composite coatings—widely studied—also fall within the hardness range of superhard coatings and exhibit outstanding, well-rounded performance characteristics, making them highly favored by researchers. Superhard tungsten carbide coating materials can be classified into unary systems (single-element compounds), binary compounds, ternary compounds, and possibly even more complex multi-component compounds. The key characteristics of superhard coating materials are: ① their chemical bonds are predominantly covalent, with only a minor contribution from ionic bonds; ② they consist of nitrides, carbides, and elemental substances from Groups III and IV of the second and third periods of the periodic table, and the constituent elements have very small atomic radii.
After years of learning, summarizing experiences, and receiving technical support from research institutions, Guangzhou Sanxin has developed its own scientifically rigorous process technology and construction plans for various thermal spray surface treatments. We welcome customers with relevant needs to inquire about tungsten carbide spraying.
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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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