Get a quote

Please fill out our contact form and we will send you a non-binding offer.

KEXIN Crucible

What is Crucible Advantages?

 -Thermal stability well : according to the using conditions of graphite crucible snap heat and cold.

– Well corrosion resistance and impact resistance performance, so to ensure the reliability of product quality.

– Excellent resistance to strong acid and strong alkali.

– And certain strain resistance to the thermal shock and quenching.

– Finally, long service life.

Graphite Crucible
Name    Φ1    Φ2     Φ3        H
1KG    58   46.5     35      88
2KG    68     57     43     108
2.5KG    68    58   43.5     120
3KG    72    66     51    110
3.5KG    81    75     60    104
4KG    85    77     60    130
5KG   100    88     69    132
5.5KG   104    92     69    155
6KG A   112   96.5     78    178
6KG B/C    112    100     79     178



Quartz Crucible
Name Φ1  Φ2 Φ3 H
1KG 69 57 49 87
2KG 84 70 60 112
2.5KG 79 69 59 127.5
3KG 90 77 68 111
3.5KG 97 89 78 103
4KG 100 89 78 135
5KG 118 100 89 135
5.5KG 119 109 94 154
6KG A 125.6 112 100 175
6KG B 127 116 103 178
6KG C 128 117 107 180


Graphtie crucible is a container applied to hold metal for smelting in a furnace. And it can withstand the extreme temperatures encountered in smelting metals.
Hence the crucible material must have a much higher melting point than themelted metal and also it must have good strength even when white hot.

Furthermore, graphcrucible can withstand the high temperature, and has good resistance to chemical erosions and thermal shockite.
In addition, graphite crucible is ideal for the melting of aluminum, copper and etc.

Material:High purity fine particle quartz.



Stored in dry place and do not get it wet.

After drying the crucible, don’t make it touch with water.

Also be careful not to give a mechanical impact force, not from a fall or impact.

Control method: Digital embedded control software.

Main chip: ARM STM32.

Chip speed: 72MHz.
Working mode: manual mode, automatic mode and temperature controlled mode.

Current heating setting: 5 section (can be extended to 32).

Number of working parameter storage: 10 pcs/mode.


Display screen: 3.5 inches TrueColor display screen, resolution ratio 320*240.


Communication and start-up interface: DB-9 and 4 cores air plug.

Bus access: RS485 (recommended), Profibus (optional), CANbus (optional).

Trial function time: 200 hours. (While the trial function enables, the device will

be locked down when it reaches the setting time.).

What is induction heating?


The heating method known as induction heating occurs when we pleace an electrically conductive material in a varying magnetic field. So induction heating is a rapid form of heating. Its current is induced directly into the heated par. Also induction heating is a non-contact form of heating.


Can you braze glass or ceramics with induction?


If you work with glass or ceramics, a compact vacuum furnace is a great solution for brazing. You’ll get quick, clean heat with very precise temperature control.


What makes up a typical induction heating system?


A typical induction heating system consists of the induction heating power supply, an induction heating coil and a water-cooling source and several internal components inside the power supply. The induction heating power supply sends alternating current through the induction coil, thus generating a magnetic field. Hence place a work piece within the coil and enters the magnetic field, then it induces eddy currents within the workpiece. Furtherly it’s generating precise and localized heat without any physical contact between the induction coil and the work piece.



Will induction heating increase my utility bills?


Not likely. Induction heating is a very effective, efficient means of heating. Most of our customers who are switching to induction for the first time see their utility bills go down.


What are typical utility requirements for induction?


Of course it depends on the system, but a typical typical system requires 380, 3-phase VAC at 50 Hz and 30 Amps. Also figure on 80 PSI compressed air and 40 PSI water at 4 gallons per minute for cooling.


Is this joint suitable for induction brazing?


Our team of metallurgical and mechanical engineers will be glad to have a look at your parts and process and give you our best advice – no obligation!



How can my process benefit from induction heating?


It can benefit your process in a number of ways. Induction heating is highly repetitive once making the initial adjustments to the power supply. Following this phase, it will heat part after part with identical results so long as introduces the parts to the coil similarly each cycle. This can also lead to better material utilization and product yield. Induction heating can reduce or eliminate the need for skilled operators in application such as brazing and soldering. The ability of induction heating to heat all parts identically lends itself to automation of the process. Induction heating can also heat the part in a highly localized fashion. It can be extremely beneficial when it is desirable or necessary to limit the heat to only a certain region of the part.






What are some of the other advantages to using Induction Heating?


Fast Cycle Times – With induction heating technology, it produces heat instantly and directly within the heated part.  Thus it supplies heat as quickly as a material will permit it, eliminating typical soak times associated with radiation or convection heat technologies.


Accurate Heat Zones – It can also isolate or pinpoint a heat-zone and small or large without affecting surrounding areas.  So the result is minimal distortion in part being heated and yielding higher quality production. Furthermore, additional infrared temperature control devices can also be added for further control of a process.


Consistent and Repeatable – Due to the development of Solid-State power supplies, the heating pattern produced by a given induction coil will be consistent from day to day, month to month.  The process will remain repeatable, rather than traditional flame heating or resistance heating having constantly changing characteristics.


Space Requirements and Efficiency – Due to the smaller space requirements for induction heating, this technology lends itself to bench-top/work cell environments and in-line semi or fully automated processes.  In addition Induction Heating technology is energy efficient. And power consumption to create the output power is minimal and in idle. Besides, stand-by conditions power consumption is greatly reduced since the power is only on when utilizes the system for the intended process.


Environmentally Friendly – Induction heating is an extremely clean heat.  Also it does not produce harmful emissions or loud noise.  Furhter more, it does not heat the environment or area outside the work coil, since it only generate the heat in the heated work piece.  Thus induction heating assists in creating more favorable working conditions.


How hot does the induction coil get?


The induction coil is cool to the touch and the heat that builds up in the coil is constantly cooled with circulating water.


Can you use induction heating to braze steel parts in a nitrogen atmosphere?


Yes you can, but the nitrogen has to be clean and have a low dew point.


Can diamond bits be brazed with induction heating?


Sure, in fact induction heating is preferable for diamonds bits because it works so quickly. The longer the diamond remains at heating temperature, the faster it degrades. So we recommend atmospheric brazing in a vacuum atmosphere for the best results.


When is it better to use the indirect heat of an induction furnace instead of direct induction heat?


Yeah, we get that question a lot. It depends on the geometry of your part and how you want to heat it. If you have a part with simple geometry and your process calls for heating a specific area of the partg. We suggest that direct induction heating will generally be preferable. However, if you need to heat the entire part, or if the part has a complex shape. Then you’ll achieve better results with an induction heating vacuum furnace.

1. Thermal stability: According to the quench acute thermal using conditions of graphite crucible. We will specially design the production procedure, so as to ensure the reliability of product quality.

2. Corrosion resistance: Even and fine basic design will delay the erosion of crucible.

3. Impact resistance: Graphite crucible can bear high thermal impact, so can carry out all process.

4. Acid resistance: The adding of special materials will greatly improve the quality of crucible. Especially its index of acid resistance. And will prolong the service life of graphite crucible.

5. High heat Conduction: High content of fixed carbon ensures the good heat conduction. It also shortens the time of dissolution. Furthermore, itremarkably reduce the energy consumption.

6. Control of metal pollution: The component of material is under strict control. It ensures that graphite crucible will not pollute the metals when dissolving.

7. Quality stability: The process technology is forming under high pressure and quality guarantee system, it will fully ensure the stability of quality.

8. Using in high temperature process, thermal expansion coefficient is small. It has resistance strain performance to hot and cold. Strong corrosion resistance to the acid and alkali solution;


Non-ferrous and ferrous metals melting.
Precious metal melting, like gold, sliver and platinum, etc.
Semiconductor material melting.
Specialized steel, iron and copper melting.
Metal alloy melting, like aluminum alloy, zinc alloy and copper alloy,etc.


Welding diamond/carbide saw blade,  diamond cutting tools, grinding tools and drilling welding.
Carbide cutting tools for machining welding. Such as turning and milling cutter welding.
Mining tools welding, such as  pillar gear drill bits, dovetail coal drill bits, drill rods riveting, all kinds of shearer.
The welding of wood working tools, such as woodworking planer, milling and drill.


Hot forming for all kinds of standard parts, fasteners, machinery parts, hardware tools and straight shank twist drill. Metal annealing, such as: tensile steel; wire, nail wire heating and stainless steel annealed.

Packing Details

Export standard packing, inner carton outer wooden box and double protection



Do you need help with choosing our products?
Fill out this form to get in touch with us.

    Relate Products

    Open chat
    Can we help you?