High frequency induction heating equipment for metal objects, under the conditions of non-contact instant heating of a kind of energy conservation and environmental protection high efficiency heating technology
Wuxi holtz induction power supply series products, all of them are focus on induction heating technology solutions, we are more understand the induction heating process, may provide the solutions according to different requirements and applicable induction power supply.
Induction heating principle?
● Induction heating principle, by using high frequency alternating current flow is curled up into a ring of conductor (usually a brass) the resulting magnetic beam, place the metal, magnetic beam will be well versed in the metal body, in the direction of produce eddy current and magnetic free beam rotation (current) under the influence of the induced current in the eddy current produce fever, in this heating mode was induced and hot. ● In short: the current generated on metal objects can be heated in a non-contact state. With this principle, the heating is concentrated at the necessary place of the heated body to achieve instantaneous heating effect, because this heating method has high efficiency, so that the production and workload are improved.
How to differentiate between frequency induction heating?
According to the power and frequency selective power, the higher the frequency, heating depth is shallow, the lower the frequency the better diathermancy.
● High frequency range：30 - 80 kHz
● Uhf frequency range：200 - 1100 kHz
● Intermediate frequency range：1 - 20 kHz
● Super audio frequency range：20- 50 kHz
Wuxi holtz induction heating equipment application process classification
It is primarily through the solder to melt until heated to a definite temperature, thus the two kinds of the same material or different materials of metal together, specific application is as follows:
● The welding of all kinds of hardware tools, diamond cutting tools, grinding tools, drilling tools, alloy saw blade, carbide turning tool, milling cutter, reamer, cutter welding, woodworking drill, etc;
● The welding of all kinds of hardware machinery spare parts, hardware sanitary ware products, refrigeration copper fittings, lamp fittings, precision mould parts, metal shake handshandle, egg beater, alloy steel and steel, steel and copper, copper and copper equivalent metal or silver welding, brazing of dissimilar metal;
● Composite pot welding is mainly used for round, square and other special-shaped flat stainless steel pot with three layers of brazing of plates, can also be used for other metal plane brazing.
● The heating plate welding of electric kettle (electric coffee pot) is mainly used for brazing between stainless steel flat bottom, aluminum sheet and electric heating tubes of various shapes.
--Hot forging--
Hot forging it mainly on the workpiece heated to a certain temperature (also different according to different material heating temperature), or other form the workpiece by punching, forging bed forging into other shapes.
● For example: watch case, watch embryo, handle, mold accessories, kitchen utensils, handicrafts, standard parts, fasteners, mechanical parts processing, copper lock, rivet, steel drill, hot extrusion of drill, etc.
--Thermal coordination--
It mainly refers to different kinds of metal or metal and non-metal through the heating of metal, using the principle of thermal expansion or thermal fusion to connect them together.
● For example: computer radiator copper core and aluminum sheet, horn net buried value welding, steel plastic pipe composite, aluminum foil sealing (toothpaste skin), motor rotor, electric heating pipe sealing, etc.
--smelting--
Smelting mainly refers to the transformation of metal into liquid through the high temperature of metal.
● Mainly suitable for iron, steel, copper, aluminum, zinc and various precious metals. Such as the melting of gold and silver.
--Heat treatment (surface hardening)--
It mainly changes the hardness of metal material by heating the workpiece
● All kinds of hardware tools, hand tools. Such as the quenching of pliers, spanners, hammers, axes, screwdrivers, scissors (gardening scissors), etc;
● All kinds of auto and motorcycle parts. Such as crankshaft, connecting rod, piston pin, sprocket, aluminum wheel, valve, rocker shaft, transmission half shaft, small shaft, fork, etc;
● All kinds of electric tools. Such as gears, shafts;
● Machine tool industry. Such as machine tool surface, machine tool guide rail quenching;
● All kinds of hardware, metal parts, machining parts. Such as shaft, gear (sprocket), cam, chuck, fixture, etc;
● Hardware mold industry. Such as small mold, mold accessories, mold hole quenching;
--Annealing (tempering, quenching and tempering)--
Annealing is to reduce the hardness of the metal, eliminate the structural defects of the metal and reduce the tendency to crack.
● Annealing of various stainless steel industries. Such as annealing drawing of stainless steel basin and can, annealing curling, annealing of sink, stainless steel pipe, stainless steel tableware, stainless steel cup, etc;
● Annealing of other metal parts. Such as golf head, club, copper lock, hardware copper accessories, kitchen knife handle, blade, aluminum pot, aluminum barrel, aluminum radiator and all kinds of aluminum products.
How to choose induction heating power supply?
Heating type
Scope of application
Frequency selection
Power selection
welding
Compound welding of drill, turning tool, reamer, milling cutter, drill and stainless steel bottom
Principle: the larger the welding volume, the lower the frequency. If the volume is less than 30 * 30 * 30, high frequency can be used; If it is greater than 30 * 30 * 30, intermediate frequency can be used. Principle: the larger the diameter of the workpiece, the lower the frequency.
According to the specific shape of the workpiece, material, solder, etc.
Diathermy
Hot upsetting and hot rolling of fasteners, standard parts, auto parts, hardware tools, copper bars, twist drills, etc
Φ50,intermediate frequency(1-20KHZ)
Φ20-50,Supersonic frequency(10-30KHZ)
Φ5-30,high frequency(20-100KHZ)
Φ5Below, UHF(100-500KHZ)
Choose the right power according to the production efficiency. The higher the power is, the faster the speed is
quench
Shaft, gear, sprocket, machine tool guide rail parts quenching and so on
Principle: the shallower the hardening layer is required for the workpiece, the higher the frequency.
1mmBelow UHF100-500KHZ
1-3mmhigh frequency30-100KHZ
2-4mmSuper audio10-30KHZ
3-5mmIf above1-20KHZ；
Considering the workpiece shape, quenching method, quenching hardness, requirements of hardened layer and material, we can consult the technical personnel of the company for details.
annealing
Annealing of metal wire and pipe, hydraulic parts, auto parts, knife and scissors, annealing of stainless steel pot, etc
In combination with the requirements of workpiece annealing, annealing speed and materials, the technical personnel of the company can be consulted
melting
Gold, silver, copper, lead and other precious metals
Medium frequency is optional for large capacity metal;
High frequency with small capacity
It depends on the furnace and production efficiency.
Thermal coordination
Roll, motor rotor, shaft sleeve, motor shaft, plastic and metal fusion, aluminum plastic pipe, steel plastic pipe, cable, wire heating coating; Aluminum foil sealing used in food, beverage and pharmaceutical industries.
It depends on the circumstances
It depends on production speed, material and temperature.
Special functions and supporting equipment
Such as dual frequency equipment, multi load matching type (double head, multi tap), automatic control type, one drag two, bridge oil pipeline elbow, constant power and constant current, flexible connection inductor.
Wuxi holtz induction heating power supply specifications
Specifications
Function description
A
All in one machine
Heating, heat preservation and cooling can be automatically converted.
Heating power, holding power, heating time, holding time and cooling time can be adjusted independently.
It is suitable for the application of the heating temperature, such as heat treatment, etc.
AB
Split machine
The variable frequency transformer is led out separately and connected with the host machine by flexible wire, which is 1.5m.
Suitable for poor accessibility applications, automatic assembly line or manual field operation.
Hand held machine
able length：3--50M length (customizable)
Refrigeration pipeline industry (copper pipe welding, joint welding).
intelligence
Integrated machine
The intelligent integrated heating machine integrates induction power supply, chiller, PLC control and touch screen operation panel.
Small size, compact structure, easy to move, easy to install and so on.
Because of the advantages of energy saving and high efficiency, the heating head is light, it has been widely used in the field of copper pipe welding.
