Overview of Mullite Crucible

Mullite crucibles are made from a high-performance ceramic material composed primarily of alumina (Al₂O₃) and silica (SiO₂). Known for their excellent thermal stability and mechanical strength, mullite crucibles are widely used in high-temperature applications such as melting metals, glass, and ceramics. They offer superior resistance to thermal shock and chemical attack, making them indispensable in both laboratory and industrial settings.

Features of Mullite Crucible

Thermal Shock Resistance: Exceptional ability to withstand rapid temperature changes without cracking.
High Mechanical Strength: Strong and durable, even at elevated temperatures.
Chemical Stability: Resistant to most chemicals, ensuring minimal contamination during processes.
Temperature Range: Can operate effectively at temperatures up to 1650°C.
Low Thermal Expansion: Minimal expansion or contraction with temperature changes, ensuring dimensional stability.
Non-Reactive: Does not react with the materials being processed, preserving sample purity.
Versatility: Suitable for a wide range of applications including metallurgy, glass manufacturing, and laboratory experiments.

(Factory Whole Double Ring Lip Graphite Crucible for goldsmith melting furnace)

Specifications of Factory Whole Double Ring Lip Graphite Crucible for goldsmith melting furnace

This graphite crucible handles gold melting well. It fits standard goldsmith furnaces. The inside diameter measures 100mm. The height is 120mm. The wall thickness is 10mm. This gives good strength. The total weight is about 1.5 kilograms. It feels solid but manageable.

The crucible uses top-grade whole molded graphite. This material resists extreme heat. It withstands temperatures over 1800°C. That’s hotter than gold melts. You avoid dangerous melt-throughs. The graphite density is high, around 1.8 g/cm³. Dense graphite holds heat better. It also resists chemical reactions. Your gold stays pure. Crucible life improves significantly.

Notice the double ring lip design. This is crucial. The outer ring gives extra strength. It prevents cracks forming. The inner ring guides molten metal. Pouring is precise and safe. You control the flow easily. Spills are less likely. This protects you and your workspace. The smooth inner surface is important too. Molten metal flows out cleanly. Less material sticks inside. Cleaning is simpler after use.

This crucible heats up fast. It saves furnace time. Energy costs go down. It cools evenly. Thermal shock resistance is good. Sudden temperature changes cause less damage. The crucible lasts longer. You get more melts per unit. Replacement happens less often. That saves money long term.

Use it for gold, silver, platinum. It handles small batches perfectly. Goldsmiths find it reliable daily. The shape is stable. It sits securely in the furnace. Tipping over is unlikely. Safety is a key benefit. Performance is consistent melt after melt.

(Factory Whole Double Ring Lip Graphite Crucible for goldsmith melting furnace)

Applications of Factory Whole Double Ring Lip Graphite Crucible for goldsmith melting furnace

Goldsmiths need reliable crucibles for melting precious metals. Factory whole double ring lip graphite crucibles serve this purpose well. These crucibles are made entirely from graphite. Graphite handles extreme heat without cracking. Gold melts at high temperatures. Graphite crucibles withstand this heat consistently. The “whole” part means the crucible is one solid piece. There are no weak seams. This makes it stronger and less likely to leak. Leaking molten gold is dangerous and costly.

The “double ring” design adds crucial strength. You see two thick rings around the top edge. This reinforced structure prevents the crucible from breaking when hot. Crucibles expand under intense heat. The double ring helps contain this pressure. Gold melts quickly inside the graphite. Graphite heats evenly. This ensures the gold melts uniformly. You get a smooth pour every time. The “lip” is a specially shaped pouring spout. It controls the molten gold flow precisely. You pour without spills or splashes. This saves metal and improves safety.

Factory production ensures consistent quality. Every crucible meets exact specifications. Handmade versions can vary. Consistent size and shape matter for fitting your furnace. These crucibles last longer than many others. Graphite resists chemical reactions with molten gold. Your gold stays pure. Impurities don’t transfer from the crucible. You get clean melts batch after batch. They are also resistant to thermal shock. Moving them from hot to cool doesn’t damage them easily. This durability saves money over time. Replacing crucibles often is expensive.

These crucibles work efficiently in standard goldsmith furnaces. Their design fits common furnace types. Loading metal is straightforward. The double ring lip provides a good grip with tools. Handling hot crucibles requires care. The design helps with safe manipulation. Cleanup after use is simple. Proper care extends their lifespan significantly.

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 Factory Whole Double Ring Lip Graphite Crucible for goldsmith melting furnace

What exactly is this graphite crucible?
This graphite crucible is designed for melting precious metals like gold. It has a special double ring lip. This sturdy construction prevents spills and makes handling safer when the crucible is hot. The whole body is made from pure graphite. This material handles extreme heat well.

How hot can this crucible get?
It withstands temperatures up to 1800°C (3272°F). This is hot enough to melt gold, silver, copper, and similar alloys easily. The high-quality graphite ensures stable performance even at maximum heat. Avoid exceeding this limit to prevent damage.

How long does one crucible last?
Lifespan depends heavily on usage. Factors include the metals melted, peak temperatures reached, and cooling methods. With careful handling and avoiding thermal shock, expect many melting cycles. Good practice is letting it cool slowly after use. Sudden temperature drops shorten its life.

What specific metals can I melt in it?
It’s ideal for gold, silver, platinum, and their alloys. Copper, brass, and bronze also melt well in this crucible. It handles high-purity melts without contaminating the metal. Avoid highly corrosive materials like ferrous metals or strong fluxes. These can degrade the graphite faster.

Why the double ring lip?
The double ring lip provides extra strength and safety. It significantly reduces the risk of molten metal spilling over the edge when pouring. This is crucial for protecting the user and the furnace. The design also makes gripping the crucible with tools more secure during transfer.

(Factory Whole Double Ring Lip Graphite Crucible for goldsmith melting furnace)