Overview of Corundum Crucible

Corundum crucibles, made from alumina (Al₂O₃), are highly valued for their exceptional thermal resistance and chemical stability. These crucibles are ideal for high-temperature applications, such as melting and annealing processes in laboratories and industrial settings. Corundum crucibles can withstand temperatures up to 1800°C and are resistant to most chemical reagents, making them indispensable in various scientific and manufacturing operations.

Features of Corundum Crucible

High Thermal Resistance: Can withstand temperatures up to 1800°C without degrading.

Chemical Stability: Resistant to most acids and alkalis, ensuring minimal contamination during experiments or production.

Durability: Extremely durable and long-lasting, even under harsh conditions.

Non-Reactive: Does not react with the materials being processed, preserving sample purity.

Versatility: Suitable for a wide range of applications including melting metals, glass, and ceramics.

Precision Engineering: Manufactured to tight tolerances for consistent performance and reliability.

(High quality 95% Al203 refractory Alumina ceramic Crucible box tray sagger kiln shelves corundum mullite Ceramic Saggar)

Specification of High quality 95% Al203 refractory Alumina ceramic Crucible box tray sagger kiln shelves corundum mullite Ceramic Saggar

The High-Quality 95% Al ₂ O ₃ Refractory Alumina Porcelain Crucible, Box, Tray, Sagger, and Kiln Shelves are engineered for demanding high-temperature applications, providing remarkable durability and thermal stability. Made up of 95% alumina (Al ₂ O ₃) alongside advanced corundum and mullite phases, these products are excellent for kiln furnishings, foundries, labs, and commercial procedures needing resistance to severe warm and chemical rust.

** Key Requirements: **.
– ** Material Make-up: ** 95% alumina web content ensures high purity, paired with mullite (3Al ₂ O ₃ · 2SiO ₂) and diamond (α-Al ₂ O ₃) for enhanced thermal shock resistance and architectural honesty.
– ** Temperature Resistance: ** Withstands constant consume to 1700 ° C( 3092 ° F )and temporary peaks approximately 1800 ° C( 3272 ° F ), making them ideal for sintering, melting, and firing procedures.
– ** Thermal Shock Resistance: ** Low thermal expansion coefficient (≈ 8.0 x 10 ⁻⁶/ ° C) and high thermal conductivity decrease cracking under fast temperature changes.
– ** Thickness & Porosity: ** Mass density of ≥ 3.6 g/cm ³ and low porosity (<2%) ensure minimal gas permeability and resistance to slag penetration. - **Chemical Inertness:** Resists acids, alkalis, and molten metals, ensuring contamination-free processing of sensitive materials like ceramics, glass, and precious metals. - **Mechanical Strength:** High compressive strength (>< 2%) ensure minimal gas leaks in the structure and resistance to slag penetration.- ** Chemical Inertness: ** Withstands acids, alkalis, and molten steels, guaranteeing contamination-free handling of sensitive products like porcelains, glass, and rare-earth elements. - ** Mechanical Toughness: ** High compressive strength( > 2200 MPa) and firmness (Mohs 9) offer exceptional load-bearing ability and abrasion resistance. ** Applications: ** Designed for use in kilns, heating systems, and high-temperature reactors, these elements act as saggers, crucibles, trays, and racks for firing ceramics, glassware, electronic components, and steel alloys. Their smooth surface area coating stops sticking and simplifies post-process cleansing.

** Modification: ** Available in typical and customized dimensions (tolerances ± 1% or ± 0.5 mm), with alternatives for round, rectangular, or bespoke forms. Pre-fired to eliminate organic binders, guaranteeing dimensional security.

** Product packaging: ** Delivered in shock-resistant, moisture-proof packaging to prevent damages during transit.

Incorporating exceptional product science with strenuous production criteria, these alumina ceramic items provide unrivaled durability, thermal performance, and cost-effectiveness for commercial and laboratory settings. Their durable building and construction minimizes downtime and replacement frequency, making them a trusted selection for high-temperature handling.

(High quality 95% Al203 refractory Alumina ceramic Crucible box tray sagger kiln shelves corundum mullite Ceramic Saggar)

Applications of High quality 95% Al203 refractory Alumina ceramic Crucible box tray sagger kiln shelves corundum mullite Ceramic Saggar

High-quality 95% Al ₂ O ₃ refractory alumina ceramic crucibles, boxes, trays, saggers, kiln racks, and corundum-mullite ceramic saggers are crafted for severe thermal and chemical security, making them indispensable in high-temperature commercial procedures. These components are crafted from 95% alumina (Al ₂ O ₃), supplying extraordinary resistance to temperature levels going beyond 1600 ° C, low thermal growth, and remarkable mechanical toughness. Their non-reactive nature guarantees minimal contamination, critical for accuracy applications.

** Ceramics & Pottery: ** Kiln racks and saggers act as safety containers throughout the shooting of ceramics, protecting fragile products from straight fire exposure and kiln debris. Alumina trays and boxes ensure even heat circulation, lowering bending or fracturing in high-value ceramic products.

** Metallurgy: ** Crucibles and trays are utilized for melting and casting steels, alloys, and precious products like gold or platinum. Their high thermal shock resistance allows fast heating/cooling cycles without destruction, ideal for shops and precious jewelry manufacturing.

** Chemical Handling: ** Immune to acids, alkalis, and corrosive gases, alumina parts are utilized in chemical reactors and catalyst sustains. They keep stability in hostile atmospheres, guaranteeing process consistency in pharmaceutical or specialized chemical production.

** Glass Manufacturing: ** Kiln shelves and saggers manage molten glass, resisting adhesion and thermal stress and anxiety during creating or annealing. Their smooth surface minimizes defects in glass products.

** Electronics & Semiconductors: ** High-purity alumina trays are made use of in sintering digital elements, guaranteeing contamination-free handling of substratums, insulators, or sensing unit aspects under extreme warm.

** Renewable Energy: ** In solar cell manufacturing, alumina crucibles and saggers aid in silicon ingot growth and wafer handling, withstanding prolonged high-temperature cycles in CVD or diffusion furnaces.

** Advantages Over Conventional Products: ** Unlike metal or lower-grade porcelains, 95% alumina items stand up to contortion, oxidation, and chemical wear, expanding service life and decreasing downtime. Corundum-mullite compounds integrate alumina’s solidity with mullite’s thermal shock durability, excellent for cyclic home heating applications.

These elements are personalized in shape and size, tailored to kiln dimensions or process needs. By lessening worldly loss and energy consumption, they offer long-lasting cost efficiency for industries requiring precision, toughness, and dependability in high-temperature settings.

Company Introduction

Welcome to Teen-Hot,a leading global supplier of high-quality crucibles designed for various industrial applications. We offer an extensive range of crucibles, including graphite, ceramic, and metal varieties, tailored to meet the needs of foundries, laboratories, and manufacturers. Our products are renowned for their durability, thermal resistance, and precision engineering, ensuring optimal performance in melting and heat treatment processes. With advanced manufacturing facilities and a commitment to excellence, we provide reliable, cost-effective solutions worldwide. Partner with us for your crucible needs and experience superior quality, expert support, and timely delivery.

If you have any questions, please feel free to contact us(nanotrun@yahoo.com).

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of High quality 95% Al203 refractory Alumina ceramic Crucible box tray sagger kiln shelves corundum mullite Ceramic Saggar

What is the maximum temperature a 95% Al₂O₃ alumina ceramic crucible or saggar can withstand?
High-quality 95% alumina ceramic products are designed to withstand extreme temperatures up to 1700°C (3092°F) in continuous use, with short-term peaks up to 1800°C (3272°F). Their superior thermal stability comes from the high-purity aluminum oxide composition, which resists deformation, cracking, and chemical corrosion even under intense heat.

What applications are these alumina ceramic saggar trays suitable for?
These ceramics are ideal for high-temperature industrial processes like sintering, calcination, and firing in kilns or furnaces. Common uses include ceramic glaze production, metal heat treatment, electronic component manufacturing (e.g., capacitors, semiconductors), and laboratory experiments requiring contamination-free environments. They are also used in aerospace and jewelry industries for precision thermal processing.

How do I clean and maintain alumina ceramic crucibles or saggers?
After cooling, remove residues with non-abrasive tools or mild acidic solutions (e.g., diluted hydrochloric acid). Avoid thermal shock—do not expose hot ceramics to cold liquids. Store in dry conditions to prevent moisture absorption. With proper care, these ceramics last significantly longer than lower-purity alternatives, maintaining structural integrity over hundreds of cycles.

How does 95% alumina compare to mullite or lower-alumina ceramics?
95% Al₂O₃ ceramics outperform mullite (typically 40-60% alumina) in thermal shock resistance, mechanical strength, and wear resistance. They have lower porosity, reducing contamination risks, and higher density for improved load-bearing capacity. While more expensive upfront, their durability and reusability make them cost-effective for demanding, high-frequency industrial applications.

Can these ceramic saggers be customized in size and shape?
Yes. Manufacturers often offer custom designs, including tailored dimensions, wall thickness, or unique geometries (e.g., round, square, hexagonal) to fit specific kiln setups or process requirements. Precision-molded alumina ceramics ensure uniform heat distribution and compatibility with automated systems. Confirm tolerances and lead times with suppliers for specialized orders.

(High quality 95% Al203 refractory Alumina ceramic Crucible box tray sagger kiln shelves corundum mullite Ceramic Saggar)