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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":{"Brand Name":"KEGU","Price":"Negotiable","Payment Terms":"L\/C,D\/A,D\/P,T\/T,Western Union,MoneyGram","Packaging Details":"Strong wooden box for Global shipping"}}
{"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","Price":"Negotiable","Place of Origin":"China","Packaging Details":"Strong wooden box for Global shipping"}}
{"title":"Pressureless Sintered SSiC Mechanical Seal Rings with 1650\u00b0C Max Service Temp","imgUrl":"https:\/\/img.chinax.com\/nimg\/93\/b2\/0aa180e09cc5b38b9916cdc6a71d-200x200-1\/pressureless_sintered_ssic_mechanical_seal_rings_with_1650_c2_b0c_max_service_temp_zero_free_silicon_and_high_purity.jpg","attrs":{"Minimum Order Quantity":"Negotiable","Usage":"Industry Usage","Chemical Composition":"Al2O3, SiO2","Sic Content":"85%"}}
{"title":"Premium-Grade Sintered Silicon Carbide (SSiC) Structural Beams 30\u202fmm\u202f\u00d7\u202f40\u202fmm\u202f\u00d7","imgUrl":"https:\/\/img.chinax.com\/nimg\/77\/9c\/4660317dc063f8f070c9b4193768-200x200-1\/premium_grade_sintered_silicon_carbide_28ssic_29_structural_beams_30_e2_80_afmm_e2_80_af_c3_97_e2_80_af40_e2_80_afmm_e2_80_af_c3_9.jpg","attrs":{"Packaging Details":"Strong wooden box for Global shipping","Model Number":"Customizable","Brand Name":"KEGU","Minimum Order Quantity":"Negotiable"}}
{"title":"8-9mm Pressureless Sintered Silicon Carbide Grinding Balls with 2000-2500 Hv","imgUrl":"https:\/\/img.chinax.com\/nimg\/f1\/3a\/6d66a911bd2e44c59cdddf68b969-200x200-1\/8_9mm_pressureless_sintered_silicon_carbide_grinding_balls_with_2000_2500_hv_hardness_2c_1600_c2_b0c_max_service_temperature_2c_an.jpg","attrs":{"Place of Origin":"China","Brand Name":"KEGU","Payment Terms":"L\/C,D\/A,D\/P,T\/T,Western Union,MoneyGram","Price":"Negotiable"}}
{"title":"Black Silicon Carbide Refractory Bricks with High-Temp Abrasion and Thermal","imgUrl":"https:\/\/img.chinax.com\/nimg\/9e\/0f\/ffaec3f17d4bc47603a77361b043-200x200-1\/black_silicon_carbide_refractory_bricks_with_high_temp_abrasion_and_thermal_shock_resistance_for_extreme_industrial_use.jpg","attrs":{"Brand Name":"KEGU","Place of Origin":"China","Price":"Negotiable","Payment Terms":"L\/C,D\/A,D\/P,T\/T,Western Union,MoneyGram"}}
{"title":"High-Performance Silicon Carbide Rollers with 1650\u00b0C Service Temperature, 196 W","imgUrl":"https:\/\/img.chinax.com\/nimg\/0a\/3c\/31e233b3a869adadec6c4d58d5fb-200x200-1\/high_performance_silicon_carbide_rollers_with_1650_c2_b0c_service_temperature_2c_196_w_2fm_2ak_thermal_conductivity_2c_and_380mpa_.jpg","attrs":{"Delivery Time":"Negotiable","Usage":"Industry Usage","Chemical Composition":"Al2O3, SiO2","Sic Content":"85%"}}
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.
