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  • Zirconia Ceramic Rod
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    Zirconia Ceramic Rod

    Zirconia Ceramic Rod is a high-performance ceramic material rod, mainly made of zirconium oxide, with excellent mechanical strength and chemical stability. It exhibits extremely high hardness and wear resistance, can withstand extreme temperature environments (up to 1500°C or more), while maintaining excellent corrosion resistance, and is suitable for a variety of demanding industrial applications. As a single product, it is often used in precision engineering fields, such as mechanical transmission parts, high-temperature sensors or core components of cutting tools, providing reliable performance and long life guarantee. In addition, Zirconia Ceramic Rod also has good biocompatibility and insulation properties, making it widely used in the medical or electronics industry. It can effectively reduce friction loss and improve equipment efficiency, and is suitable as a support structure for implantable medical devices or an insulating substrate for electronic devices. The design of this ceramic rod optimizes material density and surface finish, ensuring that it can meet high precision requirements when used as a single piece, while reducing maintenance costs, bringing significant practical value to users.

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  • Zirconia Ceramic Rod with Metal Head
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    Zirconia Ceramic Rod with Metal Head

    Zirconia Ceramic Rod with Metal Head is based on a zirconia ceramic rod as the core body, supplemented by a special metal head to form an integrated structure. The zirconia ceramic rod has excellent thermal shock stability and can maintain structural integrity in the temperature range of -200℃ to 800℃. At the same time, its surface is ultra-finely ground, with a roughness as low as Ra0.02μm, which can meet the needs of micron-level positioning; the metal head is combined with the ceramic rod using a dissimilar material welding process, and the bonding surface strength is more than 200MPa, which not only retains the ductility of the metal to buffer the instantaneous impact force, but also improves the resistance to electrochemical corrosion through surface coating technology. The core function of this product is to balance the differences in material properties, not only using the rigidity of ceramics to achieve high-precision motion trajectory control, but also relying on the toughness of metals to reduce assembly stress, which is suitable for complex working conditions that require both stability and adaptability. ​ In the application scenario, the product shows multiple adaptability. In the field of precision machine tools, it can be used as a guide rod for the spindle feed system, reducing motion loss through the low friction coefficient of ceramics and improving the surface finish of the workpiece; in analytical instruments, it acts as a probe carrier for sample detection, using the chemical inertness of ceramics to avoid contamination of the test sample; in high-end valve devices, it serves as a valve core adjustment component, relying on the sealing performance of the metal head and the medium resistance of the ceramic rod to achieve precise flow control of corrosive fluids, meeting the stringent operating standards of the chemical, pharmaceutical and other industries. ​

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  • Chamfered Alumina Ceramic Rod
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    Chamfered Alumina Ceramic Rod

    The Chamfered Alumina Ceramic Rod redefines industrial reliability through its precision-engineered design and advanced material science. Unlike conventional ceramic rods with sharp edges prone to stress concentration and cracking, this product features meticulously crafted chamfers (typically 45°, 60°, or 90° angles) that distribute mechanical forces evenly, enhancing structural integrity and resistance to impact damage. Manufactured from high-purity α-Al₂O₃, these rods exhibit a unique combination of extreme hardness (HRA 80–90, surpassing stainless steel) and thermal stability (withstanding up to 1600°C). This makes them ideal for high-stress environments where standard metallic or unmodified ceramic components fail prematurely. For instance, in semiconductor manufacturing, their low thermal expansion coefficient (8.1×10⁻⁶/°C) ensures dimensional stability under rapid temperature fluctuations, maintaining critical tolerances within ±0.02mm even across 300°C gradients.

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  • Alumina Ceramic Rod
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    Alumina Ceramic Rod

    Alumina Ceramic Rod is a high-performance ceramic material that is sintered at high temperature using high-purity α-Al₂O₃ as the core raw material. Compared with similar ceramic materials such as silicon nitride and silicon carbide, its core advantage lies in its outstanding comprehensive cost-effectiveness: while maintaining excellent high temperature resistance (long-term use at 1650°C), high hardness (Mohs hardness level 9) and chemical stability, the cost is only 1/3-1/2 of silicon nitride. This characteristic enables it to achieve "precise replacement" in the industrial field - for example, in mechanical seals, the service life of alumina ceramic rods can reach 5-8 times that of stainless steel, while the procurement cost only increases by 30%. Its unique electrical insulation (volume resistivity 10¹⁴Ω・cm) and thermal stability (thermal expansion coefficient 8.1×10⁻⁶/℃) make it an irreplaceable basic material in scenarios such as electronic packaging and high-temperature furnaces.

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  • Custom Shape Alumina Ceramic Rod
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    Custom Shape Alumina Ceramic Rod

    Custom Shape Alumina Ceramic Rod is a customized ceramic component with high-purity alumina (Al₂O₃ content ≥ 99.9%) as the main body. Its core advantage lies in the one-time molding of non-standard shapes through precision molding technology. Compared with traditional standard cylindrical ceramic rods, the special-shaped design can directly adapt to complex mechanical structures, reduce subsequent processing steps such as cutting and grinding, and significantly reduce assembly errors and costs. For example, in semiconductor etching equipment, its optimized flow channel design can improve the uniformity of gas distribution and increase the wafer yield by 4.7%; in the aerospace field, its lightweight characteristics (density is only half of that of steel) help satellite attitude adjustment mechanisms reduce weight by 30% while maintaining a positioning accuracy of ±1μm. This "design is the finished product" feature makes it an irreplaceable choice in extreme industrial scenarios that require high precision, high corrosion resistance, and high temperature resistance. 1. Material properties: the cornerstone of performanceHigh purity and corrosion resistance: Using 99.9% alumina raw material, it has excellent resistance to corrosive media such as acid, alkali, and salt, and is suitable for strong chemical environments such as lithium battery electrolyte transportation and chemical reactors.Thermal stability: The melting point is as high as 2050℃, the thermal conductivity is 20-30W/m·K, and it can work continuously at 1700℃. It is an ideal material for the inner lining of the combustion chamber of an aircraft engine and thermal protection tiles.Electrical insulation: The volume resistivity is 10¹⁴Ω·cm, and the breakdown voltage is 10kV/mm, which ensures the safety of semiconductor equipment under high-voltage environment. It is widely used in electrostatic chucks and etching cavity linings.2. Manufacturing process: guarantee of precisionPrecision molding: Through dry pressing, grouting or 3D printing process, complex shapes can be formed in one time, and the gradient sintering technology is combined to control the 200mm length error ≤2μm, meeting the nano-level precision requirements of the core components of the lithography machine.Surface treatment: Diamond micro-powder grinding (surface roughness Ra≤0.1μm) or laser processing is used to adapt to the strict requirements of semiconductor equipment for low friction and high flatness.3. Application scenarios: cross-field solutionsSemiconductor field: As a manipulator transmission shaft, it can achieve 300 times of ±1μm repeated positioning per hour; as a ceramic heater, it can ensure the temperature uniformity of the wafer deposition process.Medical field: used for artificial joints (ZTA composite materials enhance toughness) and dental implants, with excellent biocompatibility, significantly reducing the risk of osteolysis and rejection.New energy field: BYD blade battery uses directional heat-conducting ceramic components to control the temperature difference of the battery pack within ±2℃, solving the risk of thermal runaway.4. Technological breakthrough: innovation drives valueLightweight design: While reducing the weight of satellite transmission components by 30%, it maintains an accuracy of ±1μm and improves the payload efficiency of spacecraft.Long-life maintenance: Chemical pipeline lining reduces maintenance costs by 70%, extends the equipment maintenance cycle to 18 months, and reduces the cost of the entire life cycle.

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  • Yttrium stable zirconia ceramic rod
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    Yttrium stable zirconia ceramic rod

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  • Yttrium Stable Ang Chemical Ceramic Core
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    Yttrium Stable Ang Chemical Ceramic Core

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  • Zirconia ceramic positioning needle
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    Zirconia ceramic positioning needle

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  • Yttrium stabilized zirconia ceramic core rod
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    Yttrium stabilized zirconia ceramic core rod

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  • Zirconia ceramic top teeth
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    Zirconia ceramic top teeth

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Ceramic rods are cylindrical structural components made from high-performance ceramic materials (such as alumina and zirconia). They are renowned for their exceptional resistance to high temperatures, wear, corrosion, high electrical insulation, and high strength. These properties make them ideal for use in extreme environments (such as high-temperature furnaces, severe corrosion, and heavy wear). They are widely used in industrial equipment (such as furnace internals, wear-resistant parts, and seals), electronics (insulation supports), laboratory equipment, and specialized manufacturing applications. Custom products are available in various materials, sizes (diameters and lengths), and precision specifications upon request.

About Us
Zhejiang Zhufa Precision Ceramics Technology Co., Ltd.
Zhejiang Zhufa Precision Ceramics Technology Co., Ltd. is China Ceramic Rod Supplier and Ceramic Rod Factory, a manufacturing enterprise focusing on customized processing of advanced ceramic materials and precision ceramic structural parts. Its headquarters is located in Shaoxing, Zhejiang, the core area of the Yangtze River Delta in China. Since its establishment in 2022, Zhufa has always adhered to the concept of "strict selection of excellent materials, intelligent manufacturing, meticulous inspection, and sincere service", and is committed to providing stable and reliable ceramic products and personalized solutions for global industrial customers. The company has 30,000 square meters of modern plant and more than 50 core equipment, including dry pressing molding machine, isostatic pressing equipment, injection molding machine, high temperature sintering furnace, CNC engraving machine, surface grinder, centerless grinder, punch machine, honing machine, etc., with full-process production capacity from raw materials to finished products, and realizes independent control of the whole process. The company's main structural ceramic products cover a variety of materials such as zirconium oxide, aluminum oxide, silicon nitride, silicon carbide, aluminum nitride, etc. The types of parts include ceramic rods, ceramic tubes, ceramic sheets, seals and complex special-shaped parts, which are widely used in semiconductors, medical, new energy, automation equipment, laser technology, military industry and precision instruments. As a source factory integrating industry and trade, Zhufa supports customization, rapid prototyping, small batch flexible production and OEM cooperation. Since its establishment, the company has invested more than 10 million yuan in research and development, and continues to optimize material formulations and processing technology, always taking quality as the core, delivery as the guarantee, and service as the driving force to create long-term value for customers.
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News
  • Is ZTA Ceramics Suitable for High-Load Mechanical Components?

    As industrial equipment continues to evolve toward higher loads, higher speeds, and harsher operating environments, material selection has become a critical factor influencing performance, safety, and lifecycle cost. Traditional materials such as alloy steel, cast iron, and engineering plastics are increasingly challen

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  • Does ZTA Ceramics have applications in medical or bioceramics?

    Zirconia Toughened Alumina (ZTA) ceramics have emerged as a significant material in a wide range of applications due to their excellent combination of toughness, hardness, and biocompatibility. ZTA ceramics are particularly noted for their use in the medical and bioceramics fields, where their unique properties meet th

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  • In which industrial sectors are ZTA Ceramics primarily used?

    ZTA Ceramics, short for Zirconia Toughened Alumina ceramics, have gained significant attention in various industries due to their remarkable combination of hardness, toughness, and wear resistance. Unlike conventional ceramics, ZTA Ceramics offer a unique balance between strength and fracture toughness, making them hig

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Ceramic Rod Industry knowledge

Ceramic Rods: Practical Manufacturing & Application Insights


What Ceramic Materials Are Suitable for Making Ceramic Rods, and How to Choose Them?


Ceramic rods are not a one-size-fits-all product—their material selection depends entirely on the application’s performance requirements. The most common materials used include alumina (Al₂O₃), zirconia (ZrO₂), silicon nitride (Si₃N₄), and silicon carbide (SiC), each with distinct properties that align with specific industrial needs.


Alumina ceramic rods are the most cost-effective option, offering good hardness (Mohs 9) and insulation (volume resistivity >10¹⁴ Ω·cm) at room temperature, making them ideal for low-load applications like photovoltaic wafer cutting guides. Zirconia rods, by contrast, excel in wear resistance and toughness (fracture toughness ~10 MPa·m¹/²), suiting high-impact scenarios such as automotive sensor shafts. Silicon nitride rods stand out for high-temperature resistance (up to 1600℃) and thermal shock resistance, making them a top choice for petrochemical reactor internals. Silicon carbide rods, meanwhile, combine high hardness with corrosion resistance, perfect for semiconductor wafer handling tools.


Zhejiang Zhufa Precision Ceramics Technology Co., Ltd., a China-based precision ceramics manufacturer, offers all these material options as part of its advanced ceramic solutions. For clients unsure of material selection, Zhufa leverages its cross-industry expertise to match ceramic rod materials to specific use cases—for example, recommending alumina for cost-sensitive photovoltaic applications and zirconia for high-wear automotive components—ensuring each rod meets performance, precision, and efficiency needs.


What Key Manufacturing Processes Determine the Quality of Ceramic Rods?


The manufacturing of ceramic rods is a multi-step process where precision at each stage directly impacts the final product’s straightness, dimensional accuracy, and mechanical strength. The core steps include raw material preparation, molding, sintering, and precision finishing—all of which require strict control.


Raw material preparation starts with grinding ceramic powder to a uniform particle size (typically 0.5-5 μm); uneven particle sizes can lead to voids in the rod after sintering. Next, molding methods are chosen based on rod diameter and length: for small-diameter rods (≤10 mm), extrusion molding is preferred for high efficiency, while cold isostatic pressing (CIP) is used for larger-diameter rods (≥20 mm) to ensure uniform density. Zhejiang Zhufa’s 30,000㎡ manufacturing base is equipped with advanced extrusion and CIP equipment, enabling it to produce rods ranging from 1 mm to 100 mm in diameter.


Sintering is the critical step that densifies the ceramic: temperatures range from 1600℃ for alumina to 2200℃ for silicon carbide, with a slow heating rate (2-5℃/min) to prevent warping. Post-sintering finishing uses centerless grinders and surface grinders—equipment Zhufa also houses—to achieve straightness tolerance of ≤0.1 mm/m and surface roughness (Ra) of ≤0.4 μm. This level of precision is essential for applications like semiconductor wafer handling, where even minor deviations can cause process errors.


How to Ensure Dimensional Precision and Straightness of Ceramic Rods?


Dimensional precision and straightness are non-negotiable for ceramic rods, especially in industries like automotive and semiconductors where rods act as guides, shafts, or structural components. The main challenges include controlling sintering shrinkage (which can be 15-25% depending on the material) and minimizing warping during cooling.


To address sintering shrinkage, manufacturers use pre-sintered “green rods” with oversized dimensions—calculated based on the material’s shrinkage rate. For example, a zirconia rod that needs to be 10 mm in diameter after sintering will have a green rod diameter of ~12.5 mm (accounting for 20% shrinkage). Zhejiang Zhufa, which supports non-standard processing, tailors this oversized design to each client’s specific rod dimensions, ensuring the final product meets exact specifications.


Straightness control relies on two measures: using a flat, heat-resistant sintering fixture to prevent rod bending during sintering, and post-sintering straightening via precision grinding. Zhufa uses centerless grinders with computer numerical control (CNC) to achieve consistent straightness—for automotive fuel cell rods, it maintains a straightness tolerance of ≤0.05 mm/m, which is critical for ensuring proper fuel flow. Additionally, its strict quality control system includes 100% dimensional inspection using laser micrometers and straightness testers, catching any deviations before delivery.


What Industrial Applications Rely on Ceramic Rods, and What Performance Requirements Do They Have?


Ceramic rods are integral to four key industries, each with unique performance demands that dictate material and manufacturing choices:
Automotive Industry: Rods are used in sensors, fuel cells, and braking systems. For example, zirconia rods in brake caliper guides need wear resistance (volume wear rate <1×10⁻⁶ mm³/(N·m)) and high-temperature resistance (up to 300℃). Zhufa’s ceramic rods meet these requirements, helping improve automotive safety and durability—key for new energy and smart car development.


Photovoltaic Industry: Alumina rods act as guides in wafer cutting equipment, requiring good insulation (to avoid electrostatic damage to wafers) and wear resistance (to withstand abrasive cutting fluids). Zhufa’s alumina rods have a volume resistivity of >10¹⁴ Ω·cm and Ra ≤0.4 μm, ensuring stable wafer cutting and extending equipment life.


Petrochemical Industry: Silicon nitride rods are used in reactor agitator shafts, needing corrosion resistance (to withstand acidic/alkaline media) and high-temperature resistance (up to 1200℃). Zhufa’s silicon nitride rods meet these criteria, reducing maintenance costs by resisting chemical degradation better than metal alternatives.


Semiconductor Industry: High-purity alumina or silicon carbide rods are used in wafer handling, requiring ultra-low particle generation (≤1 particle/cm² per hour) and high straightness. Zhufa’s in-house manufacturing, which includes cleanroom processing for high-purity ceramics, ensures these rods meet semiconductor industry standards, reducing pollution risks during etching or deposition.


Why Choose Custom Ceramic Rod Services, and What Advantages Do They Offer?


Off-the-shelf ceramic rods often fail to meet the unique needs of industrial clients—whether due to non-standard dimensions, specific material requirements, or tight precision tolerances. Custom services, like those offered by Zhejiang Zhufa Precision Ceramics, address these gaps with three key advantages:


Fully in-house manufacturing eliminates reliance on third-party suppliers, allowing for faster lead times—Zhufa can deliver small-batch custom rods (as few as 10 pieces) in 2-4 weeks, supporting clients’ prototyping needs. Low-volume & multi-type capabilities mean clients can order rods of different materials, diameters, and lengths in the same batch, reducing procurement complexity. Direct engineering support helps optimize rod design: for example, Zhufa’s team might suggest adding a chamfer to a semiconductor rod to prevent wafer scratches, or adjusting sintering parameters for a petrochemical rod to enhance corrosion resistance.


Zhufa’s customer-centric approach, which includes full-process services from design to delivery, ensures custom rods align with clients’ exact application needs. This flexibility not only saves time and cost but also helps clients enhance their market competitiveness—by using ceramic rods tailored to their equipment, they can improve performance, reduce downtime, and extend product life.

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