Induction furnace and vacuum induction melting furnace

Induction furnace and vacuum induction melting furnace

Vacuum induction melting furnace used for smelting heat resistant alloy, magnetic alloy, electrician alloy and high strength steel, etc. No.1 characteristic is in the process of smelting furnace temperature, vacuum degree and smelting time control easily, so the degassing burden can be quite sufficient. In addition, the alloy material to add quantity also can be precisely controlled, so is the lively element such as melting aluminum and titanium heat resistant alloy and precision alloy is suitable on the stove.
The induction melting furnace in addition has the general advantages of electricity, metallurgy, such as easy to cause must atmosphere, easy to adjust temperature specifications, and reduce metal loss and ensure the quality of the casting, improve productivity and reduce the labor intensity of workers, it is because of the effects of the electromagnetic stirring the liquid metal, to ensure the uniform for the alloy composition.

What is a high frequency induction furnace

What is a high frequency induction furnace

High frequency induction furnace is also called high frequency furnace, it is a kind of induction furnace. High frequency furnace heating mode is through the tube oscillation circuit to produce high-frequency electromagnetic fields, and then added to the sample, the sample to carry on the induction, produce eddy current (eddy current), resulting in a joule heat, melt sample heated up fast, so called high frequency induction vacuum furnace.
High-frequency induction is an advanced way of heating, because only in the sample is high frequency power output during burning, burning, after the completion of high frequency induction is stopped. High frequency furnace after the start, do not need temperature preheating time, may at any time of the sample for analysis.
Has a very excellent combustion performance, high frequency furnace carbon sulfur conversion rate were higher than tube furnace, carbon can think a few of 100%, sulfur according to relevant data, can reach more than 99%.
The prominent advantages of high frequency furnace is adaptable for samples, especially for tubular furnace, electric arc furnace special material is difficult to burn, for example, high chromium stainless steel, high manganese steel, electrothermal alloy, intermediate alloy, pure metal (Ni, Co, Cu, etc.), silicon in the alloy, chromium iron, ore, slag, sinter, oil shale, graphite, tungsten carbide, rare earth materials and various non-metallic materials, etc., all have good burning effect.

Zinc melting furnace refractory material

Zinc melting furnace refractory material

Fire law of zinc in vertical retort furnace melting furnace, electric heating distilling furnace and airtight blast furnace, etc. In addition, in order to remove the impurity in the metal zinc and zinc distillation furnace.
Vertical retort furnace is mainly composed of vertical retort chamber, combustion chamber and air components, such as 1 - vertical retort chamber; 2 - chamber; 3 - air way; 4 - furnace into the hole
Vertical retort furnace, condenser and rotor work line of thermal equipment, adopt silicon carbide refractories quality build, in order to improve the heat transfer and corrosion resistance, the size of the brick should be accurate, QiFeng want to small as far as possible, and must use special slurry laying, so that the working lining form as a whole, to prevent zinc vapor blow-by.
Electric heating distilling furnace electrode hole, zinc vapor loop and channel, condenser walls and the rotor etc, generally work should be done with carborundum brick lining, other parts of the working lining can use clay brick masonry, non-working lining the general use of lightweight brick masonry.
Zinc distillation furnace is using both lead and cadmium towers distillation equipment. It by 50 ~ 60 pieces of tray crisscross stacking, equipped with central burner, heat preservation in order to facilitate the upper tray, the bottom of the tower is equipped with the use of clay brick masonry in hot chamber, can supply with hot air to the burners, tray generally adopts the heat conduction performance is good, high temperature strength, good thermal shock resistance and zinc vapor erosion resistance ability of silicon carbide refractories production, try to small size error and to ensure the structure stability of after assembly.

The lead melting furnace refractory material

       The lead melting furnace refractory material

Lead melting furnace using blast furnace and electric furnace, blast furnace is currently the most widely used of lead smelting equipment.
Blast furnace of furnace body, non-working flue and furnace bottom layer typically USES clay brick masonry, furnace body with chrome brick and magnesite brick lining, tuyere zone due to the high temperature (individual parts can reach 1500 ℃ or so), together with the erosion of molten slag and lead, working conditions are harsh, general with high clay bricks, high aluminum bricks or magnesite chrome brick lining, hearth clay brick above should be laying dense chrome brick, magnesite brick, or magnesite chrome brick for working lining, can also use magnesia or magnesia chrome refractory lining ramming material dao made bottom form work.
Electric melting vacuum furnace used electrode heating, generally USES the magnesia chrome refractory ramming material rammed, non-working side wall layer and the bottom are made of magnesia refractory ramming material, side wall, lead outlet and siphon with magnesia brick masonry work layer.

Vacuum induction melting furnace furnace maintenance methods

Vacuum induction melting furnace furnace maintenance methods

Vacuum induction melting furnace in use process, people usually encountered carbon deposit, today is to analyze the vacuum furnace hearth for everybody some of the reasons for carbon deposition.
1, long-term not charring;
2, carbon control instrument failure;
3, long-term use of high carbon potential, enriched gas flow open is too big, prone to furnace carbon deposition.
4, mood not good control
5, the most easy to carbon or inadequate methanol cracking
6, poor decomposition adsorption excess
Radiant tube carbon deposition, the consequences will be severe. Is very easy to cause the temperature rise will not come up or slow heating up. Such cases tell us vacuum furnace hearth burning carbon can effectively remove the anti-seepage carbon brick and the carbon deposition on the radiant tube. Method is vacuum furnace chamber didn't product before and after, under the condition of room temperature after the best at about 800 ℃. Then take steel opened the front door first, then put out steel; Open the door in 1 minute or so, and open the door a minute after 5 minutes (so repeatedly for 3 times). Carbon deposition is burning in the hearth.
Now you know the vacuum induction melting furnace in use process should avoid furnace carbon deposition as well as the chamber of a stove or furnace carbon processing method.

The largest-capacity vacuum induction melting furnace Introduction

The largest-capacity vacuum induction melting furnace Introduction

The device can be realized under the condition of without destroying the vacuum repeatedly charging of parent metal, alloy, temperature measuring and sampling; And effectively reduce the labor intensity of operators, has the extremely broad market space.
The success of the equipment development, shorten the gap with foreign advanced level, for a large vacuum metallurgical equipment localization technology experience; Fill the domestic blank, meet the domestic to nickel base, copper base, high temperature alloy, precision alloy is increasingly strong demand; In lower production costs, improve production efficiency and economic benefits, promoting the vacuum smelting industry rapid development of our country will play a positive role.
At present, the smelting, casting, hot working in industries such as the use of reliable and stable high power medium frequency power supply and the demand of large tonnage melting furnace,  vacuum  furnace rapid rise. A measure of the melting furnace for 1.5 tons, 2 tons of large induction furnace is mainly imported from Germany, the United States and Japan. Price expensive directly influences the metallurgical industry in our country high quality product development process. Development of high power, large tonnage vacuum induction furnace is imminent.