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Brief Introduction: Horizontal Fully Automatic

Sat, 23 Mar 2019 18:16:47 +0900

Horizontal fully automatic CNC quenching machine is generally used for induction hardening of shafts, discs, pins, gears, etc., and is divided into the following quenching series: 1. External quenching series: whole or local quenching for the round surface outside of all kinds of shafts, rods, tubes, round parts (such as bearings, valves, etc.) 2. Internal quenching series: whole or local quenching for the round surface outside of all kinds of pipe materials and mechanical parts, like cylinder liner, axle sleeve, etc.

3. End face and plane quenching series: whole or local quenching for the end face and the plane parts of mechanical parts

4. Special-shaped parts quenching series: whole or local quenching for a surface of special-shaped parts

5. Large parts quenching series: whole or local quenching for large parts with large volume and heavy weight, such as marine gear, dam sluice track, large oil pipelines and so on

Features of horizontal fully automatic CNC quenching machine:

1. adopt CNC technology, with quenching functions like connection, simultaneity, part-connection and part-simultaneity

2. can be equipped with integrated quenching liquid circulation cooling system

3. automatic loading and unloading, adjustable speed, continuous or interrupted quenching and tempering; save labor, improve efficiency and control precision .

4. adopt CNC system or PLC and frequency conversion speed control system to realize the positioning and scanning of the workpiece; connect the power supply through PLC to realize the automatic production; adopt the profile structure fuselage and a high degree of automation

Lihua Machinery Equipment Co., Ltd. in Dongguan City has many years of experience in induction hardening and the application of different arrows. For induction hardening, the most important is that high power components harden to the required surface hardness of arrows in a short time, without any obvious heat dissipation. The hardening effect will be formed at the desired position. Induction quenching can save energy, obviously reduce the degree of deformation and reduce the precision processing costs effectively.

The Technical Advantages of Vertical Numerical

Sat, 23 Mar 2019 18:15:49 +0900

The Technical Advantages of Vertical Numerical Control Quenching Machine

Today I will summarize the latest technical advantages of vertical CNC quenching machine for you. This is for your reference only.

Vertical Numerical Control Quenching Machine

1.The vertical numerical control quenching machine is used for induction hardening of shaft, disc, pin, gear and other parts. It has the functions of continuous quenching, simultaneous quenching, sectional continuous quenching, sectional simultaneous quenching, and so on;

2.The running cost is low, the driving motor of workpiece only needs 250W, and the total power consumption is less than 1/5 of the mechanical equipment;

3.When we adopt the CNC system or PLC or frequency control system, can we realize the positioning and scanning of the workpiece, and realize full automatic production and high efficiency if we connect power supply with PLC;

4.The vertical numerical quenching machine can be used with all kinds of intermediate frequency, super frequency a guide rail frequency power supply;

5.With convenient maintenance, low failure rate and no leakage, it can solve the old problem of old machine tools;

6.We adopt guide rails which they should have linear bearing, high precision, small friction, long life. We also adopt profile structure, it need to be low cost, light weight and economical and practical;

7.The vertical numerical control quenching liquid cycle cooling system with vertical numerical control quenching machine is reserved for quenching heating and cooling water control interface, which can control the quenching process and cooling process according to the process needs.

It can control the quenching process and the cooling process, it can be used for for quenching heating and cooling water control interface, according to the requirement of the process.

The quench equipment of Dongguan Lihua machine can not only satisfy with your requirements, ,according to your needs, but also can customize the color of the machine body, choose the color according to your preference, but it can be completely designed according to your style .

What Is Induction Heating Quenching?

Sat, 23 Mar 2019 18:15:28 +0900

The heating method of the induction heating equipment is mainly made from the metal itself, and usually there is an induction coil on the induction heating equipment. The AC current produces a very intense and rapidly changing magnetic field through the coil in the space of the working coil. Today I will show you what the meaning of induction heating quenching is.

Induction heating quenching: the alternating current of a certain frequency in an induction coil causes the alternating magnetic field of the same frequency around the induction coil, and the workpiece in the magnetic field produces the same induction current as the induction coil. And the opposite direction is so called the eddy current; the eddy current is mainly concentrated in the workpiece due to the skin effect. On the surface, the workpiece is heated rapidly by the resistance heat generated by the eddy current to the quenching temperature. The surface of the workpiece is hardened by spraying water to the part, and the thickness of the hardened layer gets thinner with the increase of frequency. This is the induction heating quenching.

Induction heating quenching is a kind of partial quenching method, obtaining a certain depth of hardened layer on the surface of the workpiece while the core of it remains non-quenched condition. When the surface is quenched, the surface of the workpiece is heated quickly, and the quenching temperature is quickly reached. The heat is not too late to pass to the core part of the workpiece and it has been cooled to achieve the effect of local quenching.

Lihua technology (HK) Industrial Co.ltd is a professional manufacturer of producing induction heating power. We strive for the perfection of product which is always in high quality. We provide domestic free delivery, installation and debugging, life-long equipment technology upgrade services.

What is the Difference Between High Frequency

Sat, 23 Mar 2019 18:14:40 +0900

Induction heating quenching is to put the workpiece into the inductor. The inductor generally enters the hollow copper tube with intermediate frequency or high frequency alternating current. The alternating magnetic field produces the induction current of the same frequency in the workpiece. The distribution of this induction current is uneven in the workpiece. It is strong on the surface and weak in the interior. What I am going to introduce today is the difference between medium frequency and high frequency of induction heating quenching.

The medium frequency induction heating quenching is to put metal parts into an induction coil, and induction coil energizes the intermediate frequency alternates current generation to produce alternating electromagnetic field, and then inducting alternating current in the metal parts. Due to skin effect, the current mainly concentrated on the surface of metal parts, so the surface temperature is the highest. Under the induction coil it uses water cooling or types of cooling. Because the heating and cooling are mainly concentrated on the surface, so the surface modification is very obvious, but the internal modification is basically not, which can produce a very special heat treatment effect.

The high frequency induction heating quenching is mostly used for the surface hardening of industrial metal parts. It is a metal heat treatment method to make the surface of the workpiece produce a certain induction current, quickly heat the surface of the parts, and then quickly quench.

Lihua technology (HK) Industrial Co.ltd is a professional manufacturer of induction heating power supply. The product is excellent, quality is first-class, free delivery, installation and debugging in China, and lifelong equipment technology upgrade service.

Ultrahigh Frequency Bearing Quenching Equipment

Sat, 23 Mar 2019 18:14:03 +0900

Ultrahigh frequency bearing quenching equipment can also be called ultrahigh frequency induction heating equipment, ultrahigh frequency induction heating machine, and so on. A lot of industry names associated with it. Ultrahigh frequency bearing quenching equipment uses the principle of electromagnetic induction heating, and producing a large amount of heat energy to heat the metal workpiece through the induction current produced by induction coil.

Ultrahigh frequency bearing quenching equipment: using IGBT parallel inverter circuit and inverter control technology, making the 100% load duration of this series of equipment realized and the heating state of the maximum power be able to run for 24 hours. This technology reduces the insulation caused by high voltage after the voltage of the first coil in the high frequency transformer. The customers reflect that the equipment is highly reliable; the high frequency transformer has small volume, light weight, low loss, movable and less than 1 square meters, and saves 10 times the production space for the customers; the power is large, the heating is fast, the efficiency is high, and the operation is convenient, the electric conversion rate is raised, the energy saving is more than 30-40%, and then the production is reduced.

Lihua technology (HK) Industrial Co.ltd is a professional manufacturer of producing induction heating power. We strive for the perfection of product which is always in high quality. We provide domestic free delivery, installation and debugging, life-long equipment technology upgrade services.

Several Problems About Induction Heating And

Sat, 23 Mar 2019 18:09:37 +0900

Today, I will give you a brief introduction about the problems of induction heating quenching process.

1. Make it Sure About The Technical Requirements For Induction Hardening And Quenching Parts.

The surface hardness of the parts after induction heating is related to the chemical composition and the use conditions of the material. The depth of the quenching layer is mainly determined by the mechanical properties of the parts. According to the different geometry of the parts and the working conditions, the parts and sizes of the hardened areas of various surface hardening parts have different requirements. According to the material and working conditions of the parts, we can specify the standard level ranges.

2. The Selection Of Heating Temperature For Induction Heating And Quenching

Induction heating quenching has quick speed. Compared with general heating, it is necessary to choose a higher heating speed. The suitable heating temperature is related to the chemical composition of the steel, the state of the original tissue and the heating speed;

3. The Selection Of Induction Heating And Quenching Equipment Frequency

When the equipment frequency is given or selected to be an non adjustable parameter, the selection of induction heating and quenching frequency is mainly determined by the depth of the quenching layer and the size of the parts;

4. The Induction Heating Method And The Process Operation.

① The same time heating method: this method means that the surfaces are heated at the same time simultaneously, the heated surface in the whole part needs to be surrounded by the sensor. In mass production, in order to give full play to the potential of the equipment and improve the production efficiency, as long as the output power of the equipment is sufficient, it can be heated at the same time as much as possible.

② The continuous heating method: the continuous heating and cooling of parts is lasting. The continuous heating leads a lower production rate, but the heating area is reduced, and the power of the equipment is also reduced, thus it will help to expand the application scope of the equipment.

5. The Cooling Mode After Induction Heating And quenching

The injection cooling mode: it is a common method to cool things into the liquid. It is mainly used for heating at the same time. When the surface is heated, the surface can be put directly into the water and then pour the oil to get things quenched; if adopt the continuous heating method, in order to avoid the oil smoke, we can lower the level of sensor to the oil surface to get it heated and cooled continuously;

Dongguan Lihua mechanical induction heating and quenching equipment has fast heating speed, high production efficiency, good product quality, and relatively high technical content. Only the combination of theoretical knowledge and production practice can be a good result of the future work, Lihua machinery is willing to carry hands with you to create the future!

What Is the Difference on Principle Between

Sat, 23 Mar 2019 18:09:12 +0900

1. The principle of CNC automatic quenching machine:

CNC automatic quenching machine is used to control the depth of quenching accurately by using accurate inductor or induction coil and controllable current voltage and frequency, which is generally used for surface quenching. It is mainly composed of three parts: quenching machine tool, medium frequency power supply (high frequency power supply, superaudio frequency power supply, ultrahigh frequency power supply) and cooling device. The high frequency quenching machine consists of the bed, the upper and lower clamping mechanism, the clamping and rotating mechanism, the quenching transformer and the resonant groove Road, the cooling system, the quenching liquid circulation system and the electric control system, etc.

2. The principle of induction heating quenching machine.

Induction heating quench machine is a power device that converts power frequency 50HZ alternating current to intermediate frequency 300HZ to 1000HZ, and turns the three-phase power frequency alternating current into DC, then turns DC into adjustable intermediate frequency current, and supplies the intermediate frequency alternating current flowing through the capacitance and induction coil, and produces high density in the induction coil. The magnetic lines of force and the metal materials in the induction coil generate large eddy currents in metal materials. Because the principle of medium frequency induction heating is electromagnetic induction, its heat is produced in the work piece itself. The ordinary workers can carry on the continuous work of forging task for ten minutes after working by the medium frequency electric furnace.

Lihua technology (HK) Industrial Co.ltd is a manufacturer specializing in producing induction heating and quenching machinesand CNC automatic quenching machines. Our company has the advantages of strong research and development system, process system, reliable quality, complete matching and superior performance.

What Problems Should We Pay Attention to When Us

Sat, 23 Mar 2019 17:47:03 +0900

Vertical numerical control quenching machine is generally applicable to induce heating and quenching of shaft, disc, pin, gear and other parts. I would like to share with you that what problems should we pay attention to when using it?

1.Before the operation of the vertical numerical control quenching machine, it is necessary to check whether the water flow and water pressure in each cooling road in the equipment are in a normal state. The nuts of the connecting bolts need to be fasten frequently to prevent the phenomenon of bad contact and cause the bad effect on the parts.

2.The vertical numerical control quenching machine needs to be carefully maintained. This is the key to prolong the service life of the quenching machine, and the important prerequisite for the workers to work safely. The whole process of the quenching machine is carried out under high temperature, high pressure and strong current, so it is necessary to clean the room which is placed in the quenching machine regularly.

3. The operation of vertical numerical control quenching machine: the workers should have regular maintenance for the pump motor and the hydraulic station motor in the system that can use water for cooling. Besides, clean the hydraulic oil regularly to guarantee the use of the quenching machine in normal condition, and provide the water and oil needed in the process of work. What’s more, it is necessary to test the specified voltage and rated current of the quenching machine, so that regular inspection can prevent the circuit from appearing short circuit.

The vertical CNC quenching machine tool of Lihua Machine adopts numerical control technology, which has the function of connecting, simultaneously, segmented and segmented, and configuring integrated quenching liquid cycle cooling system. The profile structure machine body has high automation degree. The CNC system or PLC conversion speed control system can locate and scan the workpiece. Besides, it can connect to the power through PLC and achieve fully automated production.

Determination of Quenching Heating Temperature

Sat, 23 Mar 2019 17:27:40 +0900

The quenching heat treatment of steel consists of two parts: heating and cooling, of which quenching heating involves two important parameters, the quenching temperature and quenching heat preservation time. The selection and determination of these two parameters is an important condition to finish the quenching heating target. Quenching heating is to heat the steel above the critical point, and preserve the heat at a suitable temperature so that it completely converts to austenite and the alloy compounds and carbides are fully dissolved and evenly distributed in austenite. Under the condition of rapid thermal treatment of induction heating, in order to finish the purpose of quenching heating, the first condition is to determine the quenching heating temperature according to the following factors.

1. The impact of rapid heating on the critical point of steel: The critical point of Steel, Ac1 and AC3, changes with heating speed increasing. The change range depends on the chemical composition of steel. Under normal circumstances, Ac1 and Ac3 increase with the increase of heating speed. Therefore, the quenching heating temperature must be based on the chemical composition of steel and induction heating speed. We can not use the traditional heat treatment of quenching heating temperature, and we need to use higher quenching heating temperature to ensure a complete austenite of steel.

2. The impact of rapid heating on the dissolution of the alloy elements and their compounds: When quenching and heating, the alloy elements in steel and the forming compounds and carbides can be incorporated into the austenite to form solid solution, so that the steel can be strengthened after the later heat treatment. Induction heating quenching has a short holding time when heated, which is unfavorable for the dissolution of alloy elements and their compounds. Thus, only by improving the temperature measures can we promote its dissolution.

3. The impact of rapid heating on austenite homogenization: Quenching temperature is an important condition for homogenization of carbon distribution in austenite. The austenite uniformity is directly related to the structural characteristics of quenched structure and the microstructure and properties of steel after tempering. Therefore, quenching temperature should meet the requirement of austenite homogenization.

To sum up, the above requirements should be taken into account when determining the quenching heating temperature under rapid heating conditions. At the same time, we must consider the short time of rapid heating and quenching time to decide the quenching heating temperature.

Lihua Machinery and Equipment Co., Ltd. in Dongguan City specializes in the production of induction heating power supply equipment. The company's products are widely used in metal processing, hardware plastics, household appliances, sanitary ware, refrigeration, automobile, weapon industry and other heat source equipment industry, using technics such as heat forming, welding, quenching, melting, annealing, heat coordination etc.

Quenching Methods And Their Advantages And Disad

Sat, 23 Mar 2019 17:20:58 +0900

Dongguan Lihua Machinery Equipment Co., LTD. gives you a brief explanation of the methods of quenching and their own advantages and disadvantages.

1. Induction heating surface quenching: the workpiece is placed in the sensor, electrically heated, so that the surface of the workpiece is rapidly heated to the required quenching temperature, and then the water is sprayed onto the surface of the workpiece. The advantages are that it heats fast and even and is of high productivity. It can also prevent surface decarbonization and oxidation and reduce deformation. The disadvantage is that it requires quite complex electrical equipment.

2.Single liquid quenching: heating the steel to quenching temperature, and cooling in a quenching agent (water, salt water or oil), is called quenching. The advantage is that method is simple so it’s widely applied. The disadvantage is that the internal stress is large so the steal is prone to crack or deformation.

3.Double liquid quenching: cooling the heated steel parts in water or salt water first, and when it is cooled to a certain degree (depending on the material), transferring it quickly into the oil to cool, is called double liquid quenching. The advantages are that it can guarantee high hardness and reduce deformation and cracking. The disadvantage is that the technical operation requirements are high which means the time of the steel in the water must be strictly controlled .

4.Stepped quenching: Cooling the workpiece that is heated to quenching temperature in a bath or alkaline bath with a temperature slightly above or slightly below the Ms point, and keeping a certain time in the bath, then puting it in the air or oil to cool, is called stepped quenching. The advantage is that it greatly reduces the quenching internal stress making the deformation and the cracking tendency greatly reduced. The disadvantage is that it can only be used for workpiece with thickness or diameter not exceeding 8 -- 10mm.

5.Flame surface quenching: use oxyacetylene to heat the workpiece surface, and then quickly put it into water to cool it. The advantage is it’s economical and convenient and of high efficiency. The disadvantage is that the quality is not good, if not controlled properly, it’s easy to produce overburnt, decarbonization, the unequal and other defects.

6.partial quenching: It is relative to the above methods which are the overall heating quenching methods. Some of the artifacts only need partial quenching, such as calipers, only the claw needs hardness, then just heats the claw, the other part is not heated.