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{"title":"15mm*11mm Pressureless Sintered SiC Roller in Industrial Equipment","imgUrl":"https:\/\/img.chinax.com\/nimg\/be\/77\/4ce2bd3b6964e2ba20dc0a7c66bc-200x200-1\/15mm_2a11mm_pressureless_sintered_sic_roller_in_industrial_equipment.jpg","attrs":{"Price":"Negotiable","Brand Name":"KEGU","Delivery Time":"Negotiable","Model Number":"Customizable"}}
{"title":"14*11 Pressureless Sintered SiC Roller Long Service Life","imgUrl":"https:\/\/img.chinax.com\/nimg\/4a\/4f\/3a1b020de27f6492ed960ccdb4f9-200x200-1\/14_2a11_pressureless_sintered_sic_roller_long_service_life.jpg","attrs":{"Minimum Order Quantity":"Negotiable","Model Number":"Customizable","Place of Origin":"China","Packaging Details":"Strong wooden box for Global shipping"}}
{"title":"Customizable Pressureless Sintered SiC Roller 1650\u00b0C Heat Resistant for Roller","imgUrl":"https:\/\/img.chinax.com\/nimg\/22\/34\/bf7f495406d027fc543715147cbd-200x200-1\/customizable_pressureless_sintered_sic_roller_1650_c2_b0c_heat_resistant_for_roller_hearth_kilns.jpg","attrs":{"Price":"Negotiable","Density":">3.05g\/cm3","Flexural Strength":"350-550 MPa","Material":"Silicon Carbide Ceramic"}}
{"title":"NIJ Certified Silicon Carbide Body Armor with Multi-Hit Capability and","imgUrl":"https:\/\/img.chinax.com\/nimg\/9c\/d5\/0cd9bcb5c5e29a7eaa581cd77dc2-200x200-1\/nij_certified_silicon_carbide_body_armor_with_multi_hit_capability_and_lightweight_defense_for_ballistic_protection.jpg","attrs":{"Delivery Time":"Negotiable","Model Number":"Customizable","Price":"Negotiable","Minimum Order Quantity":"Negotiable"}}
{"title":"1650\u00b0C Max Service Temp Pressureless Sintered SSiC Saggers: Custom High","imgUrl":"https:\/\/img.chinax.com\/nimg\/d1\/97\/d301bf3d6a641ec2184a9939914b-200x200-1\/1650_c2_b0c_max_service_temp_pressureless_sintered_ssic_saggers_3a_custom_high_temperature_solutions_for_demanding_applications.jpg","attrs":{"Price":"Negotiable","Model Number":"Customizable","Delivery Time":"Negotiable","Minimum Order Quantity":"Negotiable"}}
{"title":"Industrial-Grade SSiC Square Beams with 1650\u00b0C Max Service Temp, 380MPa Flexural","imgUrl":"https:\/\/img.chinax.com\/nimg\/c6\/ac\/b16e1f15308d20c2351f66efcd57-200x200-1\/industrial_grade_ssic_square_beams_with_1650_c2_b0c_max_service_temp_2c_380mpa_flexural_strength_2c_and_superior_anti_creep_perfor.jpg","attrs":{"Price":"Negotiable","Model Number":"Customizable","Minimum Order Quantity":"Negotiable","Material":"Silicon Carbide Ceramic"}}
{"title":"Pressureless Sintered SiC Heat Exchange Tubes with High-Temperature Resistance,","imgUrl":"https:\/\/img.chinax.com\/nimg\/23\/66\/1811741e6769c3b4b54944e8d0e3-200x200-1\/pressureless_sintered_sic_heat_exchange_tubes_with_high_temperature_resistance_2c_corrosion_resistance_2c_and_high_thermal_conduct.jpg","attrs":{"Price":"Negotiable","Density":">3.05g\/cm3","Solubility":"Insoluble","Advantage":"Wear and abrasion resistance"}}
15*11mm Pressureless Sintered SiC Roller represents a precision thin-walled hollow tube specification that achieves an ideal balance among material density, mechanical load capacity, and structural lightweighting. This product plays a critical role in applications such as thermocouple protection, high-temperature roller hearth transmission, heat exchanger tubes, and high-temperature corrosive media transport.
Manufacturing Process
Raw Material System
Preparation uses high-purity α-SiC submicron powder (SiC content ≥98%, typically ≥99%) as the main raw material, supplemented with small amounts of sintering aids and processing additives. Particle size D₅₀ is controlled between 0.5–0.6 μm with powder purity above 99%.
Forming Processes
Extrusion: Plasticized feedstock forced through precision tubular dies for continuous production
Cold Isostatic Pressing (CIP): Isotropic pressure of 100–300 MPa for uniform density and isotropy
Extrusion-CIP Combined Process: Ideal solution combining forming efficiency with density uniformity
Slip Casting: Capillary absorption method for small batches and special shapes
Sintering Process
Pressureless sintering is carried out in non-oxidizing atmosphere at 2000–2150°C, relying on solid-state or liquid-phase diffusion for densification without external pressure. This process is not limited by product shape or size, making it the mainstream route for mass production.
Post-Treatment and Precision Control
After sintering, rods undergo precision grinding and polishing to achieve target dimensions with bore diameter tolerance ±0.01 mm, cylindricity ≤0.004 mm, concentricity 0.003 mm, and surface roughness down to Ra 0.5 μm.
SSiC exhibits outstanding corrosion resistance, forming a dense SiO₂ protective layer under high-temperature oxidizing conditions. Except for hydrofluoric acid and molten strong alkalis, it shows excellent chemical stability. As a wide-bandgap semiconductor, it is non-magnetic and non-conductive.
Application Scenarios
Thermocouple Protection Tubes: High-temperature furnaces, salt baths, glass melting
Extremely long service life and cost-effectiveness
Lightweight construction and energy savings
High thermal conductivity and thermal shock resistance
Precision control capability for stringent applications
Chemical inertness and low contamination for ultra-pure requirements
Selection Recommendations
For combined conditions of high temperature (>1380°C) and highly corrosive media, SSiC rods are the necessary choice. For medium-temperature applications, RBSiC offers cost advantages. SSiC provides irreplaceable advantages in extreme hardness, high-temperature strength retention, and overall service life.
For further information or to discuss your specific needs, please contact us directly.
