Rectangular Crucibles with Cover, 99% High Purity Alumina
Rectangular crucibles are typically square or rectangular in shape, made of alumina (Al2O3) material, with extremely high resistance to high temperatures, corrosion, and wear. Its top is equipped with a lid or cover, which can seal the crucible to prevent material loss or entry of external impurities, while also...
Introduction
Rectangular crucibles are typically square or rectangular in shape, made of alumina (Al2O3) material, with extremely high resistance to high temperatures, corrosion, and wear.
Its top is equipped with a lid or cover, which can seal the crucible to prevent material loss or entry of external impurities, while also helping to control the atmosphere or temperature of reactions.
This type of crucible is commonly used for samples requiring prolonged high-temperature treatment, such as melting experiments, ceramic production, heat treatment, and other high-temperature testing and processing processes.
Covers are available for purchase separately.
Alumina Purity: Al2O3 >99%
Maximum temperature resistance: 1750°C
Continuous operating temperature: ≤1600°C
Custom services such as slotting and drilling are available.
In addition to rectangular crucibles, we also offer arc-shaped crucibles, crucible boat, and cylindrical crucibles, which can be used in various high-temperature processing furnaces such as tube furnaces, muffle furnaces, and crucible furnaces.
Applications of Rectangular Crucibles
High-temperature melting and sintering: Suitable for high-temperature melting and sintering of materials such as metals and ceramics.
Sample heat treatment: Includes processes such as annealing, calcination, and thermal analysis. The ark-shaped design facilitates the placement and removal of samples.
Ceramic production: Widely used in firing ceramic samples.
Molten metal analysis: Often used for melting samples for chemical analysis.
High-temperature storage and transportation: Can also be used for sample storage and transportation under high-temperature conditions.
Alumina Crucible Usage Precautions
1. Before the first use, preheat the crucible in an oven at around 105°C for 120 minutes to remove moisture.
2. Do not directly heat the crucible with gasoline blowtorch, acetylene torch, or alcohol burner to avoid uneven heating and cracking of the product.
3. The heating or cooling rate should not be too fast. The temperature change below 1200°C should be <5°C/minute, and above 1200°C should be ≤4°C/minute. When cooling, it is recommended to control the temperature by powering off gradually. Cooling too fast during the initial cooling phase after turning off the power may cause the product to crack.
4. The distance between the product and the heating element (such as carbon tube, silicon molybdenum rod, or heating wire, etc.) should be >2cm.
5. The bottom of large crucibles should preferably not directly contact the bottom of the furnace. It is recommended to use alumina foot pads or other heat-resistant materials to lift the crucible, forming air convection to prolong the service life of the product.
Specifications
Figures below are the manufacturer data for this model. Anything not listed is confirmed in writing with the quotation rather than estimated here.
| Rectangular Crucibles with Cover Specification (UoM：mm) | |||
|---|---|---|---|
| 20×20×10 | 20×20×17 | 25×25×15 | 30×20×10 |
| 30×20×17 | 30×30×10 | 30×30×20 | 30×30×30 |
| 40×30×20 | 40×30×25 | 40×30×30 | 45×8×6 |
| 45×22×13 | 50×10×10 | 50×20×10 | 50×20×15 |
| 50×20×20 | 50×25×10 | 50×25×20 | 50×25×35 |
| 50×40×10 | 50×40×15 | 50×40×20 | 50×50×10 |
| 50×50×20 | 50×50×25 | 50×50×30 | 60×30×10 |
| 60×30×14 | 60×30×15 | 60×30×20 | 60×30×30 |
| 60×40×20 | 60×60×25 | 65×65×25 | 65×65×30 |
| 65×65×35 | 65×65×65 | 70×70×30 | 75×75×15 |
| 78×38×22 | 80×40×20 | 80×40×30 | 80×40×30 |
| 80×40×40 | 80×40×55 | 80×40×40 | 80×40×55 |
| 80×80×40 | 85×85×40 | 90×60×20 | 90×60×30 |
| 90×60×40 | 90×60×45 | 90×90×30 | 90×90×45 |
| 100×20×20 | 100×30×10 | 100×30×15 | 100×30×20 |
| 100×30×30 | 100×40×15 | 100×40×20 | 100×50×30 |
| 100×60×40 | 100×60×60 | 100×100×25 | 100×100×35 |
| 100×100×40 | 100×100×60 | 100×100×100 | 105×105×12 |
| 105×105×40 | 115×65×45 | 115×115×35 | 120×60×20 |
| 120×60×40 | 120×80×30 | 120×80×40 | 120×120×50 |
| 120×120×100 | 135×135×60 | 140×140×38 | 140×140×45 |
| 140×140×70 | 150×150×30 | 150×150×50 | 150×150×60 |
| 150×150×80 | 155×120×50 | 160×120×35 | 160×120×85 |
| 160×140×120 | 160×160×45 | 180×180×60 | 200×100×25 |
| 200×100×50 | 200×150×200 | 200×200×50 | 200×200×80 |
| 200×200×100 | 225×225×83 | 250×150×80 | 250×250×80 |
| 250×250×100 | 300×60×60 | 300×180×70 | 300×200×80 |
| 330×330×80 | 330×330×120 | 330×330×160 |
Rectangular Crucibles with Cover, 99% High Purity Alumina In Detail
Processes This Unit Supports
These are the applications ZYLAB lists this model under. Each link opens the full equipment set for that process, which is useful when a project needs more than one machine.
- General laboratory sample preparation
Who Orders It
Fields this model already works in, plus what ZYLAB puts behind it: a 2-year warranty on most products, glass excluded, spare parts in stock and free application support by WhatsApp or email.
- University and institute research laboratories
Related Projects
Related Guides
- The Role of Vacuum Box Furnaces in High-Temperature Preparation of Oxidation-Sensitive Materials like Titanium Alloys and High-Purity Alumina Ceramics
- Laboratory Crucible Comparison: Choosing the Right Crucible for Your Experiment
- The Role of High-Temperature Sintering Furnaces in Amorphous Quartz Preparation
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Ordering Rectangular Crucibles with Cover, 99% High Purity Alumina
What is Rectangular Crucibles with Cover, 99% High Purity Alumina typically used for?
Rectangular crucibles are typically square or rectangular in shape, made of alumina (Al2O3) material, with extremely high resistance to high temperatures, corrosion, and wear. Its top is equipped with a lid or cover, which can seal the crucible to prevent mat
How quickly can Rectangular Crucibles with Cover, 99% High Purity Alumina be shipped?
Most standard ZYLAB models are held in stock. After testing and packing we normally ship Rectangular Crucibles with Cover, 99% High Purity Alumina within 3 to 7 days. Customised builds are scheduled after the drawing is confirmed, and we give you the date in writing before the order is placed.
Is there a minimum order quantity for Rectangular Crucibles with Cover, 99% High Purity Alumina?
No. ZYLAB has no minimum order requirement, so a single unit of Rectangular Crucibles with Cover, 99% High Purity Alumina is a normal order. Occasionally a component supplier imposes a minimum quantity of their own, and we tell you as soon as we are notified.
Can we get technical help before ordering Rectangular Crucibles with Cover, 99% High Purity Alumina?
Yes, and it is free. Our technical staff help with model selection, troubleshooting, manuals and application questions whether or not you have ordered from us before. Write to [email protected] or message us on WhatsApp.
What if Rectangular Crucibles with Cover, 99% High Purity Alumina is damaged in transit?
Contact your ZYLAB sales engineer immediately with photographs. We arrange a substitute delivery promptly and handle the claim with the carrier.
Quote For Rectangular Crucibles with Cover, 99% High Purity Alumina
Tell us the sample, the temperature and the atmosphere. You get the configuration, the price and the despatch date in one reply.