High frequency furnace burden is calculated as follows:

(1) the changes of high frequency furnace burden calculation of each element in the

A) the carbon content of molten iron charge: C% = 1.8% + 0.5 Ccharge%

Molten iron to the average carbon content of 3.4%, according to the type of C charge is%=3.2%;

B) silicon content of hot metal charging: the needs of theaverage content of silicon of 1.75%, if the silicon melting lossis 15%, then the

Si =1.75/ (1-0.15) =2.06% charge;

C) charge of manganese content hot metal melting loss of known Mn =0.65%, 20%, so the Mn charge =0.65/ (1-0.20) =0.81%;

D) sulphur content of molten iron burden of known S =0.12%,increases the sulfur 50%, are: S =0.12/ (1+0.5) =0.08% charge;

E) charge amount of phosphorus phosphorus no major changes in the melting process, P <0.25% =P hot metal charge

Integrated the above result, the required charge configuration for the average chemical composition:

C charge 3.2%, Si 2.06%, Mn 0.81%, charge charge S charge<0.08%, P charge <0.25%

(2) determine the initial high frequency furnace burden ratio

A) returns ratio: mainly depends on the rejection rate and the rate of finished products, it varies with the specific production. Here 20%.

The new iron and steel scrap ratio b): set the new iron for X%,then scrap as 80%- x%. According to the charge required carbon content is 3.2%, the new pig iron, scrap, scrap the carbon content of each is 4.19%, 0.15%, 3.28%, can list type:

4.19 x +0.15 (80- x) +3.28*20=3.2*100

Obtains x =60.0%. The iron material ratio: Z15 of pig iron,scrap steel, scrap 60% 20% 20%.

(3) high frequency furnace and then according to the proportionand various charge composition, calculation of charge componentssuch as table 3.

Table 3 charge composition

(4) high frequency furnace iron alloy addition amountcalculation

A) adding amount of this lack of silicon content in ferrosilicon0.67%, i.e. 100 kg per 0.67 kg of burden add silicon. Thesilicon content in ferrosilicon is 45%, so every 100 kilograms of charge must add the ferrosilicon weight of 0.67/0.45=1.5 kg

B) calculation ferromanganese added amount of the same method,every 100 kilograms of charge must join with 75% Mnferromanganese: 0.12/0.75=0.16 kg.

(5) high frequency furnace making the list of ingredients

According to the amount of iron ratio and layer, determine thevarious charge for each batch of charge weight, write a list of ingredients. A known layer of iron 500 kilograms, is composed ofeach batch of iron material: pig iron, scrap steel::500*60%=300 kg 500*20%=100 kg, scrap: 500*20%=100 kg, 45% ferrosilicon

First of all, we should understand, gear is consumable, so the increase in hardness is its core technology.

The first step is to choose the gear material. Selection of metal hardness large, such as steel, the metal is very good.But the copper and aluminum this at work is easily deformed,so there is little the material with gear.

The second step, is to choose the process. In ancient times the sword should all be seen, are repeated heating, cleaning the bathroom, and then a good sword becomes very sharp. But can now be developed, not so old, have special quenchingmachine use. This machine is called high frequency furnace,some place called high frequency machine.

The third step is to choose the appropriate power. Power is too large, is a waste of resources, power is very small, but also a waste of time. But the use of power much, is the wise remark of an experienced person, more knowledgeable peopleteach better.

Today, we will simply say that the induction heatingequipment for gear induction hardening have what advantage.

1, reduce the deformation of workpiece, maintain stable size.

2, lower equipment cost, processing cost reduction gear.

3, close to the root fillet, with an extremely high residualcompressive stress, improves bending fatigue strength of gear teeth, with excellent strength gradient.

4, improve the metallurgical properties of parts, and eliminates the generation in the process of heat treatment,such as oxidation, decarburization.

5, compared with traditional gear quenching process, the pitch circle of larger depth of tooth, hardness and high strength, in the Addendum will not produce overheat andbrittle.

High frequency induction heating equipment for induction hardening has many advantages for gear, is more than 5 pointslisted above, this is the best equipment for heat treatment of workpiece.

First of all, we should understand, gear is consumable, so the increase in hardness is its core technology.

The first step is to choose the gear material. Selection of metal hardness large, such as steel, the metal is very good.But the copper and aluminum this at work is easily deformed,so there is little the material with gear.

The second step, is to choose the process. In ancient times the sword should all be seen, are repeated heating, cleaning the bathroom, and then a good sword becomes very sharp. But can now be developed, not so old, have special quenchingmachine use. This machine is called high frequency furnace,some place called high frequency machine.

The third step is to choose the appropriate power. Power is too large, is a waste of resources, power is very small, but also a waste of time. But the use of power much, is the wise remark of an experienced person, more knowledgeable peopleteach better.

Today, we will simply say that the induction heatingequipment for gear induction hardening have what advantage.

1, reduce the deformation of workpiece, maintain stable size.

2, lower equipment cost, processing cost reduction gear.

3, close to the root fillet, with an extremely high residualcompressive stress, improves bending fatigue strength of gear teeth, with excellent strength gradient.

4, improve the metallurgical properties of parts, and eliminates the generation in the process of heat treatment,such as oxidation, decarburization.

5, compared with traditional gear quenching process, the pitch circle of larger depth of tooth, hardness and high strength, in the Addendum will not produce overheat andbrittle.

High frequency induction heating equipment for induction hardening has many advantages for gear, is more than 5 pointslisted above, this is the best equipment for heat treatment of workpiece.

The first is to wear furnace, liquid steel lining out isfrom, should often detect lining, repairs, or re build furnace, observed on the instrument, usually direct currenthigher than usual, doing little, an unusual sound, can be prevented; followed by the capacitor breakdown, filtering andcompensation capacitor easy breakdown, main due to a bad cooling heating, oil spills, or quality is not good,according to the voltage value using the megger measurementcan detect simple; then is to design a quick may explode,intermediate frequency furnace sound wrong or cannot be established to check; the last is the thyristor maybreakdown, multimeter can be judged, soft breakdown is time-consuming, sometimes not feeding power, each to protect or trip to a certain value, of course, this phenomenon is not necessarily a silicon tube thing, other original bad willcause this phenomenon.

CF-400KW intermediate frequency induction furnace

Intermediate frequency furnace and failure to stop the operation, inspection and repair of the, in order to ensure the normal work of the medium frequency furnace.

CF-400KW intermediate frequency induction furnace

Henan Chao Feng electrical induction furnace has the advantages of fast, energy-saving, clean, easy realization ofautomation, high production efficiency and online production,which belongs to the internal heat source, belonging to the non contact type heating method, can provide high power density, in blank heating surface and depth has flexibility,low loss, no physical pollution, the basic principle ofenvironmental protection and sustainable development, is one of the green environmental protection type heating process.The controlled atmosphere heat treatment, and vacuum heat treatment of less or non oxidation technology has become the mainstream in the development of heat treatment technology.

After the metal forging and casting the same material has obvious advantages:

Compared with casting, forging and machining can improve the structure and mechanical properties of metallic materials.Cast microstructure after forging method of thermaldeformation because of metal deformation and recrystallization, the organization became more closely,improving plasticity and mechanical properties of metals.

Forging processing can effectively guarantee the continuity of fibrous tissue, the fibrous tissue and forging shapeforgings keep basic consistent, the metal streamlineintegrity, can ensure that the parts have good mechanical properties and longer service life. The precision forging,cold extrusion, warm extrusion process for production offorgings, castings are has incomparable advantages.

Many customers in the purchase of CNC vertical quenching machine, can appear sometimes circuit board short, no electricity, no display of digital control system. In view of the above situation, our technical staff, specialized on arranging the vertical quenching machine tool circuit boardrepair situation for everyone.

Vertical quenching machine tool system circuit board repairmainly includes three kinds: ① circuit board repair Japan; ②FANUC (FANUC); ③ Mitsubishi (MITSUBISHI) circuit boardSiemens system of machine tool. Below we one one to introduce:

First: in the repair of NC vertical quenching machine toolsystem motherboard, CPU circuit board (memory ROMRAM memoryboard) the two main board is the two part of the more important in NC quenching machine, CNC vertical quenching machine tool can be used with high frequency heating machine,high frequency induction heating power supply and other ancillary equipment at work, so customers in repair time,should notice.

Second: when it is repair all kinds of servo drive controller,attention should be paid to the switch power supply and servomold.

Third: there are various types of imported equipment on thespecial circuit board repair, when this kind of circuit board,have to be careful, these small parts, repair process, to be careful.

Fourth: when repair CNC vertical quenching machine tool, and the variable frequency drive, all kinds of industrialequipment, PLC and interface board.

Fifth: is in the electronics industry more developed today,liquid crystal display has been extended to every electronic equipment, CRT (display), liquid crystal display is ionrepair.

High frequency furnace structure

Sixth: circuit board, is more common in everyday life such as:injection molding machine circuit boards; textile, printing and dyeing, chemical fiber, garment production lines of various circuit boards; control panels food, beverage production line; control board printing industry; all kinds ofengineering tire production line control panel control panelof various pharmaceutical production; line; process monitoringboard chemical, paper mill; hospital CT circuit board;elevator control, display panel; automobile production linecontrol circuit board production line of wire and cable;control panels; program-controlled switchboard main control board and user board etc..

The six circuit board repair, and is also suitable for high frequency welding machine, high frequency machine, high frequency furnace, heating furnace circuit board. Hope that the majority of customers in the use of the future in the process of repair, pay attention to the situation. Details of the call Henan Chao Feng electrical or landing http://www.cfjrsb.com

The next is the most attention Chinese and even in the worldof a problem, which is related to safety and environmental protection. Firstly, high frequency furnace is electricity, do not burn coal, zero emission, no pollution, second,electricity consumption can be as high as fifty percent, butafter the evaluation, reliability. Third, heating quicklyheating speed is less than a second, so that the speed ofelectric charges are difficult to.

Next is the practical analysis: quick start, no need of preheating after opening. Convenient installation, because everything is prepared, and convenient to move, because the weight of the machine itself and not. Small size, does not occupy space.

Heating wire rod

The first step: pre ultrasonic frequency quenching process:

Pre ultrasonic frequency quenching machine process mainlyrefers to: mould the top first ultrasonic frequency quenchingprocess includes full annealing, isothermal annealing,annealing and tempering process of aluminum alloy extrusion.Below we will introduce:

First of all: full annealing to eliminate stress, especiallycold, heat stress, improve the microstructure, microstructurehardness, improve the machining performance. Full annealingmainly dry blank after forging.

Secondly: blank annealing and isothermal annealing is applied to change after forging, the purpose is the same with the fully annealed. But in order to eliminate stress, improve tissue,reduce the hardness, improve the machining performance,increase the isothermal process.

High frequency furnace

Again: low temperature annealing (or high Ju the same fire) is to eliminate the internal stress, hardness, improve the organization, in order to reduce the quenching deformationready, commonly used to repair parts of the lower hardness andquenching is eliminated before processing the stress treatment.

Super audio quenching machine is widely used in all kinds of gear, chain wheel, shaft quenching. Quenching various axle,leaf spring, fork, rocker arm, valve, ball head pin and other auto parts. All kinds of internal combustion engine fittings,reducing surface parts quenching. Quenching machine tool bedguide rail of the machine tool industry (lathe, milling machine, planer, punching etc.). All kinds of pliers, scissors,quenching ax, hammer, hand tools.