Latest Products
Contact Us
- No.92 Jianshe West Road, Zhongyuan District, Zhengzhou, Henan,China.
- albert@literefractory.com
- +8619937887923
Cordierite-Mullite Kiln Shelves & Pin Cranks
Our Cordierite-Mullite Kiln Furniture Set (including shelves, pin cranks, and bases) is a high-performance solution for ceramic kilns, crafted from premium cordierite-mullite composite. With a max working temperature of 1300℃, 1.85g/cm³ low bulk density, and 30MPa flexural strength, it balances thermal shock resistance (excellent for frequent kiln startup/shutdown) and structural stability. Designed for tableware, sanitary ware, and technical ceramic firing, it supports high packing density while leaving minimal glaze marks. Backed by ISO 9001, CE, and TüVRheinland certifications, we offer 3000 tons monthly capacity, customization, and factory-direct pricing ($1.99-$10/piece) to meet global industrial needs.
Description
1. Product Overview
This integrated kiln furniture set combines three core components-kiln shelves, pin cranks, and support bases-all made from cordierite-mullite via semidry pressing + high-temperature sintering (1500℃+). The composite material merges cordierite's ultra-low thermal expansion (2.2-2.6×10⁻⁶/K) with mullite's high-temperature strength, solving two key industry pain points: it avoids the cracking of pure cordierite shelves under heavy loads and the brittleness of pure mullite pin cranks. The pin cranks feature small ceramic pins that minimize glaze contact (only tiny, polishable marks), while the shelves support up to 50kg stacked ceramics without deformation. Standard sizes cover 300×300mm to 1650×700mm, with custom shapes (perforated, grooved, trapezoidal) available for non-standard kilns.
2. Key Features
Extreme Thermal Shock Resistance: Endures 1100℃ rapid cold-hot cycles without cracking, adapting to shuttle kilns and tunnel kilns with frequent temperature fluctuations-service life 3× longer than ordinary ceramic kiln furniture.
High-Temp Durability: Max working temperature 1300℃ (refractory temperature 1580-1770℃), maintaining stability in ceramic glaze firing zones (1200-1280℃) without softening or warping.
Glaze-Friendly Pin Design: Pin cranks use 3-5mm ceramic pins to support ware, leaving only 2-3mm marks (easily polished) vs. 10+mm marks from traditional setters-ideal for high-gloss tableware and sanitary ware.
Lightweight & High Load-Bearing: 1.85g/cm³ bulk density reduces kiln cart weight (easy to handle), while 30MPa flexural strength and 12MPa compressive strength withstand 50kg+ stacked ceramics (e.g., 10 layers of dinnerware).
Low Impurity & Stable Performance: CrO/SiC content 0, CaO ≤0.5%-no heavy metal contamination to ceramic glazes; uniform apparent porosity (23%-30%) ensures consistent heat distribution across shelves (avoids uneven firing).
3. Technical Parameters
| Parameter | Specification |
|---|---|
| Main Composition | Al₂O₃ 35%-45%, SiO₂ 45%-53%, MgO 6%-8%, CaO ≤0.5%, CrO/SiC 0 |
| Bulk Density | 1.85-2.0g/cm³ |
| Apparent Porosity | 23%-30% |
| Flexural Strength | ≥30MPa (20℃), ≥10MPa (1250℃) |
| Compressive Strength | ≥12MPa (20℃), ≥10MPa (1250℃) |
| Max Working Temperature | 1300℃ |
| Thermal Expansion Coefficient (20-1000℃) | 2.2-2.6×10⁻⁶/K |
| Standard Sizes | - Shelves: 300×300mm to 1650×700mm (thickness 6-40mm)- Pin Cranks: Customizable pin spacing (20-50mm)- Bases: 100×100mm to 300×300mm |
| Color | Light Yellow |
| MOQ | 50 pieces (standard); 100 pieces (customization) |
4. Application Scenarios
Ceramic Industry:
Tableware/sanitary ware firing: Pin cranks support glazed ware, minimizing marks; shelves enable high-density stacking (30% more pieces per kiln load).
Technical ceramics: Supports alumina/zirconia ceramic sintering (low impurity ensures product purity).
New Energy & Powder Metallurgy: Used as support plates for lithium battery cathode material calcination (compatible with 1200℃ low-oxygen environments, referenced in industry kiln furniture applications).
Glass & Abrasives: Glass panel annealing shelves (resists thermal stress) and abrasive tool sintering bases (high strength avoids breakage).
5. Service & Support
Customization Service: Supports size (shelves up to 1650×700mm), shape (perforated/grooved/trapezoidal), pin spacing, and logo/packaging customization (MOQ 100 pieces); design plans delivered within 3 days via customer drawings.
Samples & Quality Assurance: Free small samples (customer covers shipping); each batch undergoes 100% QC (including high-temperature testing and strength inspection); 1-year warranty (free replacement for defects).
Delivery & Pricing:
Lead time: 1-10 pieces (15 days), 11-50 pieces (18 days), 51-100 pieces (25 days), bulk (>100 pieces) negotiable.
Pricing tiers: $1.99-$10/piece (bulk ≥500 pieces: $1.99-$6/piece); $80 off for $1000+ orders.
Packaging & Shipping: Standard packaging: carton + fumigated wooden pallet (1.6-2.0 tons/pallet); shipped via Qingdao/Shanghai ports (FOB/CIF terms available); 100% on-time delivery rate.
Hot Tags: cordierite-mullite kiln shelves & pin cranks, China cordierite-mullite kiln shelves & pin cranks suppliers, manufacturers, factory
You Might Also Like
