Machinery for Jewellery & Precious Metals

The Automatic Melting Furnace was designed to be a safe and easy-to use electrical method for melting gold, silver and other non-ferrous metals for casting and ingot-pouring applications. It offers precise control of melting temperatures up to 1120°C (2028 °F) through its user friendly, easily programmable controller with LED display.It comes with special kanthal heating element which gives higher operating temperature range and longer life. The glass wool insulated lid holds in heat and keeps oxygen out for a cleaner melt.

Specification of Product:

Technical details:

WHAT IS AN ELECTRIC FURNACE ? 

An electric furnace is a device whcih generates heat due to the resistance offered to the passage of current that is passed through it.

The furnace provided by us is of indirect heating type, which implies there is no contact between the heating element ( we use high quality & long lasting kanthal heating element ) and the crucible.

HOW DOES IT WORK ?

When you put the power on of the furnace , the current passes through the kanthal coil and heat is generated due to ohmic resistance and the coil becomes red hot ; This heat is transferred to the crucible by radiation which melts the material that is inside the crucible.

 BENEFITS YOU GET :

• [ PRECISE TEMPERATURE CONTROL ] Highly advance digital control system combined with K-Type thermocouple, monitors the real time chamber temperature and make sure it doesnot overheat or cooldown providing you with precise and convenient melting.
• [ LONGER LASTING HEATING ELEMENT ] High quality Kanthal coil which can withstand high temperature  uptp 1450°C and higher heating cycle . this is your term partner.
• [ QUICK MELTING ] the furnace comes with an insulation lid which resists the heat from escaping and easily melts your metal without any contamination.
• [ PORTABLE ] This machine is very compact and weighs only 8kgs , providing you the freedom of moving it wherever you like.
• [ 6 IN 1 SET ] The package comes with heat resistance gloves ,safety glasses for your safety ; tong and high quality graphite crucible with collar for easy handling and minimal contamination of the melt.
• [ EASY TO OPERATE AND MAINTAIN ] The furnace is so designed , it is extremely easy to set the parameters and operate and requires minimal or no maintenance.

HOW TO OPERATE :

1. Pick an appropriate and safe working space to operate the furnace. Make it certain that the area in which you are working is madeup of incombustible material that won't catch fire in the event of liquid metal spill.
   
2. Make sure there is safe distance of atleast 24 inch between the furnace and any combustible material or item that maybe present in the immediate surrounding.
3. Put the crucible into the furnace chamber and make sure the crucible is touching the thermocouple properly.
4. Add the material to be melted into the crucible(add Flux if required).
5. Close the lid properly.
6. Plug in the furnace into the 220V AC power supply.
7. Turn on the green coloured ON/OFF button on the furnace (Green coloured light should be lit).
8. For setting the temperature, Press the square button on the temperature controller, keeping it pressed press the up /down button to adjust it according to your requirement and then release.
9. When the metal is melt turn off the green button.
10. Take out the crucible from the furnace with help of a tong.
    
    ( NOTE:- Always wear safety glasses, gloves and safety shoes for your safety )

Delmer Vitrified Ceramic Jacket provides strength and longer life to graphite crucibles.

• KEY FEATURES : 

1. Medium frequency which give high homogeneity of alloys due to stirring of the molten alloy. 

2. Easy to access and operate buttons with LED display.

3. Programmable power.

4. Improved power factor.

5. The furnace controlled by industry leading ARM-7 microcontroller. 

6. Programmable melting temperature.

7. Automatic fault detection & display.

8. Fast melting.

9. Minimum maintenance required.

WHAT  IS AN INDUCTION MELTING FURNACE ?

An induction melting furnace is a type of electrical furnace , wherein the heating is done by induction of electric current within the charge itself without having direct contact with the induction coil.An induction furnace consist of water cooled hollow copper tubing arranged in different shape according to the requirement; mostly cylindrical shape copper coil is used in the melting industry. Through this copper coil an Alternating Current at high frequency is passed ,because of which a reversing magnetic field is created according to the lenz law.When we put any conductor (charge to be melted ) in this magnetic field an induced cicular current called Eddy Current is generated within the charge.

Heating in induction furnace occur due to two major effect namely,
Eddy Current heating :- In this heating occur by ohmic heating or joule's heating due to the restivity of the charge to the induced electric current.
Hysteric Heating :- Heating (energy ) is produced within the charge by the alternating magnetic field generated by the coil modifying the charge's magnetic polarity. 
This loss is though limited only to the magnetic material , that also only upto the curie temperature , heating beyond which the material losses it's magnetic properties and hence the hysteric heating becomes nil.
Frequency also plays a major role in the heating process though not directly; frequency determines the depth upto which the induction current can reach by an effect called 'Skin Effect'. According to the skin effect the depth of penetration is inversely proportional to the frequency of the alternating current.Thus for purpose of surface treatment or smaller mass of material higher frequency is desired whereas for deeper penetration and larger melt size lower frequency is desired.

KEY FEATURES OF INDUCTION FURNACE :-

• An induction heating is considered as a green technology because the heating is done only of the charge and there is no waste of energy ; Also no harmful gas or fumes is released making it safer for the worker.
• As there is no direct contact of the heating element we get a very clean melt with no contamination which is highly desired in the jewellery industry like gold,silver,platinum melting ,laboratory application or where precise control of the composition is required.
• Induction furnace also provides us with the facility of automatic stirring (the melt is agitated at the induction frequency) which is highly desired for homogeneous melting and alloying.
• Induction furnace can be frequently turned on and off according to the requirement without any  damage to the machinery. 
• Very high melting temperature upto 1200-1300°C can be reached within a few minutes.
• Induction furnace can be used for continous melting and casting.

APPLICATION OF INDUCTION MELTING FURNACES:-

• Small and medium size laboratory for melting small quantity of materials for testing purposes.
• Medium scale minting ,melting facilities with capacity upto 30kgs of gold.
• Precious metal industries dealing in gold,silver,platinum,etc.
• Copper melting industries.
• Jewellery manufacturing unit.

WHY SHOULD YOU CHOOSE DELMER FOR GOLD AND SILVER MELTING ?

• User friendly design and operation which makes it very easy for the user to learn and operate.
• For delmer ,customer is of utmost importance ,thus we make customised design according to the need of the customer.
• Delmer induction furnace comes with automatic frequency adjustment according to the loading type.
• We are the only manufacturer providing induction furnace with smooth and noiseless operation.
• At delmer we provide world standard Italian grade quality at most affordable cost in india.
• Our induction furnace comes automatic current variation to give precise melting temperature.
• Lowest melting time in the induction melting industry.
• We are the only provider of single phase variants in the induction furnace industry.

FAQS

How much time is taken for the melting ?

Melting time depends on the quantity and the type of material you are melting. But it usually it takes just a few minutes for the metal get melted and ready for pouring.

Material being melt in the first cycle usually takes a little more time ,thereafter the times for subsequent melting decreases.

What is the difference between resistance electric furnace and induction furnace ?

Resistance electric furnace works on the principle of heating of the resistance coil directly and the maximum temperature that can be reached is limited to melting point of the resistance coil ; Also electrical furnace cannot be used for multiple casting continuously.

On the other hand induction furnace works on the principle of electric induction and no heating of the coil takes place and maximum temperature is only limited by the crucible and refractory material; Also induction furnace can be used for continous casting.

Is there any requirement for maintenance ? 

Yes, you need to change the syndanio sheet every 5-6month and thermocouple needs to be changed as per the need.Other than that no other maintenance is required.

Is external stirring required ?

No, the induction melting does automatic stirring of the melt no external stirring is required.

How hot does the induction coil gets ?

The copper induction coil does not heat during the melting process and remains at the temperature of the water being supplied.

Will induction heating increase my utility bill ?

Specifications: 

Delmer Static Furnace is a furnace for casting precious materials ideal for jewelry production.

Thanks to its generator, in the two versions of 2, 5 and 10 KW, it is possible to melt up to 1,3 and 5 kg of gold respectively. Thanks to its simple and intuitive instrumentation it is easy to use for all operators.

Technical Data:

Their particular shape is used in Magnetic Shiner machines only for the shining step, especially when there are internal surfaces impossible to reach by hand.

Rate is for 1kg.

Specifications: 

Delmer Rolling mill is very effective for precise metals like gold, silver and copper.

its specifications are as below: 

Weight : 270 kg

Dimensions : 85 X 34 X 117 cm

Power supply :  1 H.P. / .75 KW. 1 Phase

Max. Roller Speed : 7.57 (M/Pm.)

Rolls Width X Diameter : 101 X 57

Wire Grooves From – To : 0.75 - 8

Max. Sheet Width Can Be Rolled : 60

Max. Apertures Of Rolls : 25

No. Of Half Round Grooves : 2

Depth per rotation of staring : 0.78

Graphite crucibles are high quality melting crucibles. They are suitable for melting and refining precious metals.

Graphite crucible can withstand high temperatures, are chemical and thermal shock resistant and can be used in furnaces and high heat processes.

Graphite crucibles are high quality melting crucibles. They are suitable for melting and refining precious metals.

Graphite crucible can withstand high temperatures, are chemical and thermal shock resistant and can be used in furnaces and high heat processes.

Vitrified graphite crucible provides strength to crucibles.

this product contains both jacket and crucible as shown in image.

• KEY FEATURES : 

1. MEDIUM FREQUENCY WHICH GIVE HIGH HOMOGENEITY OF ALLOYS DUE TO STIRRING OF THE MOLTEN ALLOY. 
2. EASY TO ACCESS AND OPERATE BUTTONS WITH LED DISPLAY.
3. PROGRAMMABLE POWER.
4. IMPROVED POWER FACTOR.
5. THE FURNACE CONTROLLED BY INDUSTRY LEADING ARM-7 MICROCONTROLLER. 
6. PROGRAMMABLE MELTING TEMPERATURE.
7. AUTOMATIC FAULT DETECTION & DISPLAY.
8. MOTORISED TILTING MECHANISM TO PREVENT ACCIDENT AND UNIFORM POURING.
9. POWERFUL INDUCTION GENERATOR FOR FASTER MELTING.
10. MINIMUM MAINTENANCE REQUIRED.