Audited Supplier
Cordierite mullite board is fired with mullite as aggregate and cordierite as base material. Since cordierite has a (SiO2)n ring-shaped structure, there are large voids in this structure, so it has the characteristics of small thermal expansion coefficient, while mullite has a large thermal expansion coefficient, resulting in a mismatch between the expansion coefficients of the two materials, making the two materials.
The formation of fine cracks at the phase interface can effectively reduce the thermal stress caused by temperature changes, effectively avoid the spread of catastrophic cracks, and greatly improve the thermal stability of cordierite-mullite refractories; at the same time, because mullite The crystal has high refractoriness (melting point is 1810°C) and high mechanical strength (bending strength at room temperature is 49MPa), so using mullite as aggregate can effectively improve the high temperature strength of the shed.
Application:
1. Kiln furniture: Cordierite-mullite boards are widely used as kiln furniture in industries such as ceramics, glass, and metallurgy. They provide a stable and heat-resistant platform for supporting ceramic ware, glass sheets, and metal parts during firing processes.
2. Heat treatment furnaces: Cordierite-mullite slabs are used as shelves or supports in heat treatment furnaces where materials need to be exposed to high temperatures for processes such as annealing, sintering, or tempering.
3. Industrial kilns: Cordierite-mullite slabs are utilized in various industrial kilns, including tunnel kilns, roller kilns, and shuttle kilns.
| Item | Unit | Index | |
chemical components | Al2O3 | % | >56 |
| SiO2 | % | <38 | |
| MgO | % | >5 | |
| Fe2O3 | % | <0.5 | |
| volume density | g/cm3 | >2.6 | |
| apparent porosity | % | 16 | |
| bending strength(20ºC) | Mpa | 180 | |
| thermal expansivity | (ºC-1) | ≤0.3×10-6 | |
| refractoriness | ºC | 1800 | |
Q1 : How can you control your quality?
A1 : For each production processing, we have complete QC system for the chemical composition and Physical properties. After production, all the goods will be tested, and the quality certificate will be shipped along with goods.
Q2 : What is your lead time?
A2 : It usually needs about 15- 20 days after receiving the PO.
Q3 : Do you provide free samples?
A3 : Yes, free samples are available, generlly speaking, the buyer shall bear all the delivery cost.
Q4 : What is your payments terms?
A4 : We can accept 30% deposit, 70% balance to be against the BL copy or by LC, or other payment terms.
Q5 : Can we visit your company?
A5 : Yes, for sure, you are welcome to visit JUCOS company.
Q6 : What standards do you have?
A6 : Our products meet the standards, such as ASTM, ASME, AMS, DIN, JIS etc.
The third party testing is all available for us.
