3kg Gold melting with testing

Induction Copper to Copper Fittings Welding

cooldo.tech: IGBT Gold Melting Furnaces

 IGBT Gold Melting Furnaces: Professional mining companies discover gold in relatively higher qualities and it is already present in some natural shape. In order to brin...

IGBT Gold Melting Furnaces

Professional mining companies discover gold in relatively higher qualities and it is already present in some natural shape. In order to bring out the desired shape and size of this gold, the companies are first required to convert it into liquid form. With the help of gold melting furnaces, the gold is melted with a considerable amount of heat.  This also ensures burning off the impurities and converting the gold into its purest form. There are a variety of gold melting furnaces available in the market which employ different techniques to carry out the task. One of the best is the IGBT gold melting furnace, the details of which are given below:

Entirely Digital Use:

The Insulated Gate Bipolar Transistor (IGBT) technology was initially used in Unplugged Power Supply (UPS) in the year 1990 and was later presented as an option for being used in the induction systems. Generally, the main difference between IGBT and previous technologies is that this technology grants a complete digitized usage of the control system and a higher rate of efficiency as compared to previous systems.

Manipulation of the Power Controls:

One of the biggest advantages of this technology is that it runs on low power. Even this power can be manipulated during the gold melting process which allows the operator to increase or decrease it according to his preference at any time. It can also save up to 30 percent of energy as compared to other types of gold melting furnaces.

Varied Frequency Range:

Another huge advantage with it is that the frequency range is also very flexible and can be controlled with the help of power units. This allows reaching very high or very low levels of frequency at any time.

Multiple Furnaces:

There is a possibility that the gold melting furnace might come with two crucibles. This means one can hold already melted gold whereas the other one will be able to melt more gold.

Capacity:

The capacity range of these furnaces is relatively high. From melting as low as 1 kg with smaller furnaces, the range can go as high as 500 kg.

Usage:

It can be used in a factory or laboratory and is suitable for a family shop as well. This is because it has no complexity and is very easy to use. Plus, there are no dangers attached to its usage, therefore, from local factories to huge industries, it can satisfy the need of various units of any magnitude.

Voltage and Power:

It can be used for single phase,three phase, and can run on the voltage of 110V,220 V,340V,380V,420V. The power which it requires to run can range from 6 KW to 500 KW making it perfect to handle various kinds of loads.

This technology has surpassed the previous ones when it comes to being used in induction systems. There is nothing else in the market which can match the quality, efficiency, and reliability of the IGBT gold melting furnaces.

Precise and non-destructive gold testing machine/equipment for percious metal

We are one of the most trusted names in domestic as well as overseas market for offering a comprehensive range of gold purity 
testing machines. Manufactured with advanced machinery, these computerized gold analyzers are capable of high performance 
with great precision. Our range is known for their accuracy and long service life.

Prodection Description:

1. Gold tester(SPB9600)is integrated an industrial computer with industrial motherboard & multi-point hand touch. Providing

    best operation experience. 

2. It is designed exactly to security standards with active radiation protection, high voltage protection and X-ray tube 

    overheating protection. Warm-up and anti interference procedure is controlled by the program, to reduce the interference 

    by the reflected X-ray and the spectrums, to add the accuracy and stability. 

3. Optional colors for different elements will help to distinguish the interested elements clearly and conveniently. When the

    testing is over, the testing report will be shown timely.   

Product Specification: 

Working Principle: Energy Dispersive X-ray Fluorescence

Analyzer Elements: Au,Ag,Pt,Rh,Ru,Ir,Pd,Cu,Zn,Ni,Co,etc. 

Test Time: Confirm the elements in 10～60 second, operator could set the time for testing the elements intensity.

Test Precision: 0.1% -0.01%,The Precision could keep calculating the average after several repeated test.

Detection limit: 100ppm Best substance effect

Detector: Si-Pin145Kev± 5

Operating Environment: Temperature -11~46 degree

Humidity ≤ 70% High Voltage: 0~50KV/0~1mA

Main Structure: High-strength metal frame and industry plastic shell

Expanded Uncertainty: ≤ 0.19%

N/G Weight(KG): 33/ 41               Size(mm): 650*450*350

                                                                                                              shanghai cooldo 

1) Medium frequency power supply

Highly reliable with several protection levels site fault, excluding any human error factor. It is the main managing element of the whole system, equipped with the timer, heating elements temperature control.

PLC–controller(OPTIONAL)

This censor digital-controller should be additionally installed into the frequency thyristor converter in order to improve general work process, providing dozens programs storage, keeping archives up- to-date.The display reflect ina real-time-mode all processes information: power (kW), voltage loose (A), cranking voltage (V), capacitor voltage (Hz).

2) Capacitors 

Big volume capacitors interconnected and adjust to the equipment power source; Maid of metal frame with capacitors installed above, including terminal blocks and pipes for the cooling liquid.

3) Melting unit (hydraulic)

Compose of steel frame with the hydraulic bias and induction coil.

The coil is installed upon the steel frame and insulated with high-temperature materials that protect the coil from the concrete lining and overheating of the material.

4) Exhausting fan 

It is installed upon melting units with hydraulic, and has additional hydraulic fluid power with the control panel. It is used to exhaust gases and steams (toxic).

5) Hydraulic station 

Compose of pumps, valve system and control panel, connected with the hydraulic bias control panel.

6) Hydraulic bias control panel of the melting unit

Manages the bias angle of the melting units and provide smooth movement of the hydraulic system of the melting units

7) Water cooling cable 

It should be flexible and firm cable to connect melting unit with the capacitors batteries that power up the coil and cooling it with the liquid simultaneously.

8) Crucible for concrete lining 

9)Lining displacing/changing mechanism (OPTIONAL)

It is used to change the lining quickly; it is compose of hydraulic pushing cylinder. This mechanism drastically reduces lining change process.

                                                                                      Shanghai Cooldo 

                                     

Steel shell induction melting furnace  

The Steel Shell Indution Melting Furnaces designed of COOLDO are not only stronger than frame based designs, but also significantly quieter, profit by the solid steel shell’s sound-deadening characteristics.  Large access panels on every Heavy Steel Shell Furnace are constructed from heavy steel to protect the coil during furnace operation. They are ideal for melting all metals. Along with providing excellent durability and superior performance, they are more efficient, more productive, quieter and easier to maintain than competitive furnaces.

Main Feature of steel shell furnace.
1, more stronger and quiet than the aluminum shell.
2, more Reliable operation of hydraulic tilting system.
3, More easy operation of tilting angle.

KGPS Mediun frequency power supply 

1. The character of control circuit: full digitalization, integration, reliable anti-interference, power factor more than 95%. 
2.The sweep-frequency circuit is adopted, steady operation, reliable protection and strong adaptability with load, frequent start-up successful rate more than 98%. 
3. Overall protection (short circuit, open circuit, lack water, over current, over voltage, lack phase…etc) ensure automatic stop running in case failure occurred. 
4. The advantages are: small volume, less space taken-up, high efficiency, concise circuit, reasonable layout, full load adjustable, temperature and power control constantly, failure diagnosis automatically

Steel Frame Furnace 
1.These furnaces are ruggedly built with heavy structural steel for trouble free operation under harsh melt shop conditions.
2.Thick walled rectangular coil sections are used to minimize coil losses. The higher coil efficiency ensures energy savings and higher productivity.
3.Special coil insulation prevents inter turn sparking.
4.Insulated furnace lid is provided to reduce heat loss through radiation.
5.Fume extraction ring / Fume extraction hood provided to capture smoke and fumes.
6.Coil supports maintain inter turn gap and enhance the rigidity of The coil assembly.
7.Insulated furnace lid is provided to reduce heat loss through radiation.
8.Fume extraction ring/ fume extraction hood provided to capture Smoke and fumes.

Closed Water Cooling System

1. Closed & Pressurized System Cooling 
2.Air elimination system 
3.Expansion tank 
4.Structural steel frame
5.Pump with motor 
6.Internal piping & wiring included 
7.Electrical & temperature control panel with alarm circuit 
8.Dry Cooler (liquid to air) complete with fans, coils and enclosure for outdoor mounting 
9.Automatic pump switch-over to standby pump

   

Hydraulic Power Supply
Power supply for two steel shell furnace tilting.

  

capacitor  

                                                                                         COOLDO TECHNICAL DEPT.

2016-06-06

rolling mill for rebar 8mm- 25mm

rolling mill for rebar 8mm- 25mm , steel billet plant, turnkey system.
for more information, pls refer to our official website:www.wzsuperb.com. and send to our email:info@wzsuperb.com

Trusted induction furnace manufacturer from shanghai cooldo

SHANGHAI COOLDO INDUSTRIAL CO.,LTD

COOLDO is a manufacturing and service business that has been in operation since 1999.We specialize in the design and manufacture of various induction melting furnace and induction heating equipment  and have developed a  wide range of customized induction furnaces.

Over the years we have forged excellent relationships with many scientific and technology institutes both in China and internationally. Induction melting furnaces are our knock out product which make use of IGBT and KGPS technology along with high and ultrasonic frequency induction heating equipment. Our range of world class, high quality products has many applications for metal melting and heating for bending, forging, metal quenching and brazing etc.

we are specialized in the complete project solutions for metal melting, heating and casting workshop. Involved in the application are：

• Gold melting furnace/machine
• small foundry 

• Steel  plant

•copper melting furnace/machine

• aluminum melting furnace/machine

• 60-150 square mm steel billet production line

•closed water cooling system

for more information, pls check our website:www.wzsuperb.com

dual track induction furnace for foundry

Dual track induction furnace for foundry, both furnace can used to melt, or one furnace body melt, one 


furnace for keeping warm. 15+safety design, longlife technical support, whole year warranty,


the most energy saving induction furnace in china, for more information , pls send email to :sales@induction-heaters.net



and refer to our website: www.wzsuperb.com

The advantage of main equipment components in COOLDO INDUSTRIAL
     www.wzsuperb.com

1、Medium frequency power supply

（1）、Principle of work

Through the three-phase AC power supply through the three-phase bridge rectifier, become adjustable DC power supply, through the reactance filter, filter after losing to the single phase inverter bridge, Through the pulse control, make single bridge diagonal alternation switch become single-phase 1000hz intermediate frequency current. Resonance circuit is made by induction coil and compensation capacitor composition, and the current to the induction coil .The sensors in metal charge generating vortex, then heated to melting furnace

（2）、Main components—silicon-controlled rectifier ：

The silicon controlled my company used is main procurement in Hubei TECH Semiconductors Co., Ltd. (TECHSEM)、Hangzhou Hanan Semiconductors Co., Ltd and Zhejiang Sifang Semiconductors Co., Ltd, the three companies above are China silicon manufacturing industry leader, the production of the silicon controlled quality and stability, have a strong ability of anti impact current，not easy to damage, 20%~30% higher price than the same industry.

（3）、Main components—the main control circuit board：

Parallel SCR intermediate frequency power supply used in circuit board, it is my company independent research and production, research and development engineers timely update and improvement of circuit board  that guarantee the company in the industry leading level; production welding circuit board all through my company profession quality inspection personnel test and check one by one, to eliminate substandard products sold out and ensure that the equipment safety.

（4）、Main components—circuit breaker：

My company uses the circuit breaker in the procurement of Shanghai people Electric Appliance Switch Factory. This company was founded in the nineteen seventies, it is the production and sales of high and low voltage electrical appliances, instruments and meters, complete set of power transmission and distribution equipment, high voltage electrical components, building electrical appliances, wire and cable products research and development, production, sales and services for the integration of a manufacturing enterprise. This enterprise won the "Chinese enterprise image AAA level enterprise", "Chinese famous quality products", "China hundred outstanding enterprise" and so on the title. 

         

2、Capacitor device：

（1）、Principle of work 

 Capacitor cabinet and the induction coil connected in parallel to compensate for the induction coil of the inductive reactive power, at the same time with the coil to form a resonant circuit to achieve proper frequency and equivalent impedance. After compensation, intermediate frequency power supply need only provide required load active power and a small amount of reactive power, intermediate frequency power supply capacity can greatly reduced.

High power induction furnace needs a large amount of compensation capacitor, in order to reduce the occupied space and electromagnetic leakage. My company's capacitor cabinet adopts a unique double installation mode. Large current water bus use special mold custom, water cooling chamber and a molded copper, No welding, therefore no oxidation, water cooling and the conductive efficiency is high.

（2）、Main components—electric capacitor

    Capacitor cabinet used to compensate the reactive power of induction coil, At the same time with the coil to form a resonant circuit, to achieve proper frequency and equivalent impedance. After compensation, intermediate frequency power supply only need to provide the required load active power and a small amount of reactive power. Intermediate frequency power supply capacity can be greatly reduced. The electric capacitor my company used is main procurement in Xin'An River Power Capacitor Limited and Hangzhou keang  power & electrical apparatus Co., Ltd. These two companies are famous for domestic electric capacitor production enterprises, registered capital of over RMB20000000. Because of its first-class quality, overvoltage capability, win the user's consistent high praise in the long-term process of applications

  

3、Coreless induction furnace aluminum furnace

（1）Principle of work

Intermediate frequency electric furnace complete sets of equipment is change the frequency of 50HZ alternating current into intermediate frequency（more than 250HZ to 2500HZ），the three-phase alternating current into direct current, after the rectification, the DC power into the adjustable frequency current, Supply consists of a capacitor and an induction coil in the intermediate frequency alternating current flowing, to produce a high density of lines of force in the induction coil, and cut the metal materials filled in the induction coil, in metal materials they will have a great eddy current. It based on the principle of electromagnetic induction heating metal. Use of intermediate frequency power supply establishment of intermediate frequency magnetic field, the ferromagnetic material generated internally induced eddy current and heat to achieve the heating material for the purpose. Intermediate frequency electric furnace uses 250-2500Hz medium frequency power supply for induction heating and melting heat. Intermediate frequency electric furnace for smelting steel, alloy steel, special steel, can also be used for copper, aluminum and other non-ferrous metal smelting and extraction temperature. Equipment has the advantages of small volume, light weight, high efficiency, less power consumption, melt fast temperature rising, the furnace temperature is easy to control, high production efficiency.

My company produces aluminum shell furnace use thickening type high purity aluminum panel, can be used for a long time without deformation, stable.

（2）Main components—induction coil

Induction coil used in type T2 (99.9% purity electrolytic copper), wall thickness ≥ 4.5mm extrusion of rectangular tube in the special die winded, It ensures the coil of the rigid, and also has the most conductive section. According to the ISO431-1981 standards for selection of coil material, reach minimum copper loss and high electromagnetic conversion rate.

Induction coil made of high temperature resistance, high pressure resistance insulating paint, insulation grade reaches H grade. Induction coil before they leave the factory will after 12kg/cm2（Schematic diagram for the water pipe and the induction coil connected）hydraulic pressure test 36 hours and 7000v withstand voltage test, there is absolutely no water leakage phenomenon