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Working principle and structure of molten gold melting equipment in medium and high frequency melting furnace

Working principle and structure of molten gold melting equipment in medium and high frequency melting furnace

Medium and high frequency melting furnace working principle
When the magnetic flux surrounded by the conductor loop changes, an induced potential is generated in the loop. Similarly, the conductor in the alternating magnetic field is also induced by the electromagnetic induction to generate an induced current in the conductor (eddy current) ), the induced current overcomes the resistance of the conductor itself to generate Joule heat, and the heat is used to heat the conductor itself to heat and melt it to achieve various thermal processing purposes, which is the principle of induction heating.


Induction heating melting and traditional flame heating melting comparison

Compared with the traditional flame melting process, induction heating melting has obvious advantages such as energy saving, environmental protection and safety.

Induction heating smelting has higher working efficiency than flame heating smelting, high output per unit time, heating efficiency is 30%~50% higher than flame heating, high heating efficiency, and can also effectively reduce the low oxidation loss of metal surface, save material and The cost, especially for precious metal heating, is even more important. For example, under normal circumstances, the heating of metal parts is hot, the metal burning rate of induction heating is about 0.5%, and the metal burning of the furnace is about 1% to 3%, which means that induction heating is less than flame heating. %about.
 
Melting furnace
Medium and high frequency melting furnace structure characteristics
Melting furnace

Germany Siemens solid-state IGBT frequency conversion and function adjustment, soft switching resonance dual regulation and frequency automatic tracking technology, is a guarantee of high reliability;
Easy to install and operate;
Ultra-small size, light weight, movable, covering less than 1 square meter;
24-hour uninterrupted smelting capacity;
Energy saving;
It is convenient to replace the furnace body with different weight, different materials and different furnace modes to meet various melting requirements;
Ultra-small IF induction heating power supply is very different from traditional IF power supply;
Good heat and heat transfer, uniform temperature;
The medium frequency magnetic field has magnetic stirring effect on the molten metal, which is favorable for uniform composition and scum;
According to the recommended equipment and maximum melting capacity, the melting time per furnace is 20-30 minutes.

High-frequency melting machine can use 220V voltage energy saving and environmental protection
Medium frequency melting gold furnace adopts 380V three-phase electricity. It can be changed to three-phase four-wire five-wire system.

The high temperature melting machine can reach a temperature of more than 1800 degrees. Suitable for gold k gold silver smelting
The maximum temperature of the medium frequency melting furnace can reach more than 2800 degrees. Suitable for platinum, palladium, gold smelting


Equipment performance


The Hairuituo high-frequency smelting furnace is mainly used for the melting and heating of precious metal materials such as gold, silver, copper, tin, aluminum, iron, stainless steel and platinum.
The amount of smelting is from 1KG to 250KG. Mainly through the enamel container to instantaneously sense the temperature of the precious metal, then smelting, purification, casting and other processes
·High-frequency smelting has a good electromagnetic stirring effect, which is conducive to smelting metal temperature and uniform structure, which is beneficial to slag removal and impurity reduction.
·Frequency range: high frequency 20-50KHZ, medium frequency 1-10KHZ, can comprehensively consider the amount of melting, electromagnetic stirring, heating efficiency, noise during operation
Inductive loop and matching compensation capacitor are designed by factors such as sound to determine the output frequency
Compared with thyristor intermediate frequency, energy saving is at least 20%
·The equipment has small rest and light weight, and the melting range is from several kilograms to several hundred kilograms. The range of choice is very large, suitable for factory production and school.
And the Institute uses a small amount of smelting or company testing content.
This product technology is a new technology on the market, bringing together the research results of many well-known experts at home and abroad. The success is from the initial
Tube Technology One transistor MOSFE technology → IGBT module technology conversion upgrade. All models are equipped with IGBT
Module technology to make product stability better

Application and advantages

Melting furnace

·Smelting: Mainly through the high temperature of the metal, the metal into a liquid
Suitable for steel, stainless steel, iron, copper, brass, gold, silver, aluminum, aluminum alloy and other metals and precious metals: gold, silver heating smelting.
Melting furnace heating capacity and advantages
High-frequency melting furnace: a single melting time of 1-5 minutes. Suitable for smelting a small amount of metal 1-5KG, molten iron, stainless steel, gold, molybdenum: 1-2KG
Medium frequency melting furnace: When the furnace is cold, the melting time of the furnace is 40-50 minutes. When the furnace is hot, the melting time of the furnace is 20-30 minutes.
Suitable for smelting large quantities of metal or production, low melting point metals will melt faster
·The maximum furnace temperature can reach 1500-2000 degrees
Fast heating rate, constant temperature after heating
Simple installation, safe operation, environmental protection and energy saving
Light weight, small size and high efficiency
Protection: with overvoltage, overcurrent, overheating, water shortage and other alarm devices, and automatic control and protection
Input voltage: single phase 220V / three phase 380V

Basic composition of high frequency melting furnace
·Including high frequency power supply (one machine or split machine), induction coil, 坩埚

The basic composition of the intermediate frequency melting furnace
·Including medium frequency power supply, compensation capacitor box and furnace body. According to different application requirements, it may also include infrared thermometers, temperature controllers, etc.
There are three types of melting furnaces: dumping smelting furnaces, top smelting smelting and stationary smelting furnaces. The dumping and quenching furnace can be divided into machinery according to the pouring method.
Dumping, electric dumping and hydraulic dumping


The dumping medium frequency melting furnace manufactured by Herrento has laid the foundation for various applications of smelting. Each of the inverted intermediate frequency melting furnaces of Herrento is carefully designed and manufactured to ensure its high performance and to meet various needs. For the application and workpiece requirements, Herrento offers a wide range of tilting medium frequency melting furnaces to choose from. Herrento offers a full range of products to meet customer needs, a wide selection of dumping medium frequency melting furnaces, and our employees Years of experience have combined to enable Herrento to provide a better melting system.
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