Medium-Fine Carbon Sleeve for Mid/Low-Grade NO
Designed for continuous annealing lines processing mid/low-grade non-oriented silicon steel, this medium-fine structure carbon sleeve delivers reliable performance from ambient temperature up to 950℃ in both dry and wet atmospheres. It effectively resists nodulation and oxidation while providing stable strip support—solving the core challenge of balancing surface quality with extended service life in general-purpose electrical steel production.
Add Your Heading Text Here
Wet Atmosphere Compatibility for General Steel Lines:Specifically engineered for both dry and wet atmospheres from ambient to 950°C, this carbon sleeve reliably serves the vast majority of mid/low-grade silicon steel production lines where moisture is present—eliminating the need for multiple sleeve types across different furnace sections.
Two Temperature Grades for Application Matching:Available in low-temperature (≤900°C) and medium-temperature (850–950°C) versions with distinct pore sizes (0.2 mm vs. 0.1 mm), allowing producers to select the exact specification that matches their process conditions without paying for over-engineered performance.
Optimized Pore Structure for General-Purpose Nodulation Control:With maximum pore size of ≤0.2 mm (LT) and ≤0.1 mm (MT), this sleeve effectively prevents most oxide particles from embedding into the roller surface—reducing nodulation-related defects while maintaining cost efficiency for standard electrical steel applications.
Balanced Strength for Reliable Operation:Flexural strength of 15–18 MPa and compressive strength of 30–35 MPa provide sufficient mechanical robustness for typical mid/low-grade line speeds and tensions, ensuring stable strip support without the cost premium of ultra-high-strength materials.
Moderate Density for Cost-Effective Longevity:Bulk density of 1.72–1.75 g/cm³ combined with apparent porosity of 14–15% delivers an optimal balance between oxidation resistance and initial investment—maximizing service life within general-purpose production budgets.
Consistent Graphitization for Strip Surface Protection:Graphitization degree of 70–90% ensures reliable self-lubricating properties that minimize friction against the steel strip, reducing surface scratches and protecting finished product quality without expensive surface treatments.
Versatile Hardness for Wear Resistance:Shore hardness of 35–50 HS provides adequate wear resistance for continuous strip contact while maintaining sufficient gentleness to prevent mechanical damage—ideal for the varied grade mixes typical in mid/low-grade production facilities.
Cost-Optimized Solution for Volume Production:By matching technical specifications precisely to mid/low-grade requirements rather than over-specifying, this carbon sleeve series offers the lowest total cost of ownership for high-volume electrical steel producers focused on operational efficiency and margin preservation.
Application
General Purpose Industrial Motor Manufacturing:For facilities producing IEEE standard industrial motors (IEC 60034) where cost efficiency is paramount, this medium-fine structure sleeve operates reliably in mixed-grade production environments, handling frequent material changes between different mid/low-grade electrical steels with minimal adjustment.
Small Transformer Core Annealing:In dedicated lines manufacturing laminated cores for distribution transformers and small power transformers using 0.35–0.50 mm mid-grade silicon steels, the LT version (≤900°C) delivers predictable performance in both dry and humid conditions common in older annealing facilities.
Pump and Fan Motor Production:For high-volume manufacturers of general-purpose pump, fan, and blower motors requiring consistent magnetic properties but accepting standard surface finishes, this cost-optimized sleeve provides extended campaign life without the premium price of ultra-high-performance alternatives.
Multi-Grade Flexible Manufacturing Facilities:In plants running diverse production schedules across multiple mid/low-grade NO specifications with frequent grade changeovers, the dual-grade availability (LT/MT) allows operators to standardize on a single sleeve family—simplifying inventory while ensuring process compatibility.
Emerging Market Steel Processors:For steel service centers and processors in developing regions operating mixed-vintage annealing lines with varying atmosphere control capabilities, this sleeve’s broad tolerance for both dry and wet conditions ensures consistent operation regardless of minor process variations.
Performance metrics | Low-temperature carbon sleeve | Medium temperature carbon sleeve | Flexural strength/ MPa | ≥15
| ≥18
|
|---|---|---|
compressive strength/ MPa | ≥30
| ≥35
|
Apparent porosity/% | ≤15 | ≤14 |
Bulk density/ g·cm-3 | ≥1.72 | ≥1.75 |
Degree of graphitization/% | 70~90 | 70~90 |
Shore hardness/HS | 35~50 | 35~50 |
Maximum aperture size/mm | ≤0.2 | ≤0.1 |
Terms of use | Normal temperature -900°C dry/Wet atmosphere
| 850-950°C dry/Wet atmosphere
|
Contacts
ADDRESS: 4578 Marmora Road, Glasgow, D04 89GR
PHONES: (800) 123-0045; (800) 123-0046</span
WE ARE OPEN: Mn-Fr: 10 am-8 pm