#induction furance

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Incompletely interpreted and defective parts

Incomplete penetration refers to defects caused by the fact that the base metal does not melt and the weld metal does not enter the joint. According to the welding method of the welded parts, the roots are not welded and the middle is not welded.induction welder.

       The root is not welded because the liquid weld metal does not enter the blunt edge of the root, and most of it exists in the single-sided welding of the V-shaped or U-shaped groove. The middle is not welded because the liquid metal does not enter the middle blunt edge, and most of it exists in the double V-shaped or double U-shaped groove double-sided welding.              The weld is not welded to the defect        The lack of penetration in the weld will reduce its effective area and seriously reduce the mechanical properties such as the strength of the welded parts. Incomplete penetration will also cause stress concentration and severely reduce the fatigue strength of the weld. In addition, when the welded part is under load-bearing stress, it may develop into a crack if it is not welded, and may eventually cause the weld to crack.        The incomplete penetration is more harmful than the defects such as pores, slag inclusions and tungsten traps, which are harmful defects.

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Welding plugging - preparation before welding

In industrial production, some continuously operating equipment leaks for a variety of reasons. induction heater. Such as pipes, valves, containers, etc. The occurrence of these leaks affects the stability of normal production and the quality of the product, and pollutes the production environment, causing unnecessary waste. What's more, some media, such as toxic gases, grease, etc., will cause serious damage to safe production and the surrounding environment.       The sealing of equipment with pressure, oil or toxic substances is a special welding under abnormal working conditions. Unlike normal welding specifications, it emphasizes safety during operation. Precautionary safety construction measures must be in place before welding to ensure the safety of the workplace, welders and other workers. Welders must be experienced and skilled, and must have technically experienced welding engineers to provide safe technical guidance.       For example, a certain type of fuel tank must understand the capacity, ignition point, pressure, etc. of the oil inside, and can ensure that the welding process will not cause personal injury or even a greater safety accident, in order to be able to construct.       Therefore, the following points must be done before welding and welding:       First, safety relief. Before welding is plugged, it must be determined whether the pressure of the equipment to be welded will constitute personal injury. Or under the influence of the welding heat source, the equipment has a safe pressure relief passage (such as a safety valve installed).       Second, temperature control, before the welding is plugged, all measures must be taken to prevent fire and explosion. In welding, the welder must strictly follow the minimum and minimum heat input specified in the process documentation, and must perform safety cooling measures during welding to prevent fire or explosion.       Third, anti-poisoning, when the container or pipeline containing toxic substances is plugged and welded, it is necessary to timely discharge the toxic gas leaking and timely supply of fresh air. At the same time, it is necessary to do a good job of pollution isolation of toxic substances.

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What are the operating points of the battery spot welder?

The battery spot welding machine is mainly an industrial equipment that uses micro-computer control technology for welding operations. induction welder. It not only has three welding modes such as single pulse, double pulse and multi-pulse, but also can be used to directly adjust the welding requirements of different workpieces. The parameters thus ensure the accuracy and repeatability of the welding operation and are often used in a variety of workpiece welding operations. So, what are the operating points that people should pay attention to when using a professional battery spot welder?

1. When using a battery spot welder, care should be taken to place the nickel sheet on the surface of the lithium battery, and use a suitable type of battery clamp to move the nickel sheet on the surface of the lithium battery. Finally, use the foot to step on the pedal of the welder. Welding can be done.

Second, people need to press the nickel plate and the battery with two needles when using the battery spot welding machine, and also pay attention to the welding needles touching each other to avoid affecting the welding effect when welding the workpiece.

Third, when using the battery spot welder, the welding pressure of the welding machine should be adjusted, that is, the knob that uses the hand to screw the welding pressure, if the rotation is in the clockwise direction, the pressure is increased, such as rotating in the counterclockwise direction. In order to reduce, people can adjust the appropriate pressure according to the welding requirements before performing the welding work.

Fourth, in order to prevent accidents and other accidents, people should do sufficient inspection work before using the battery spot welding machine for welding work. For example, when checking the carbon deposit of the welding pin, it should be cleaned with a file or sandpaper, and the right foot is also applied. Under the foot pedal of the welder, the head of the welder should also be lowered to visually check whether the needle is accurately aligned in the position to be welded.

The above contents are the operating points that people should pay attention to when using a professional battery spot welder. Pay full attention to the operation points of the battery spot welder not only to avoid accidents, but also to improve the welding precision of the welded workpiece, and at the same time To ensure the quality of use, you should also try to purchase the equipment of the reputable battery spot welder merchant.

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Four characteristics of battery spot welding machine

Battery spot welders are widely used in high efficiency laser spot welding or sealing welding in the battery industry, mobile phones and other related industries. induction welder.  For manufacturing companies, choosing a high-quality battery spot welder determines the rate of product qualification, and can improve employee productivity, save time costs and produce good quality products. A good quality battery spot welder has the following four characteristics:

First, the welding effect is excellent

The battery spot welding machine has the advantages of high strength, small welding point, no pollution, easy control, low processing cost, and can be processed into various micro-miniature metal devices in addition to widely used in mechanical and electronic fields. The spot welder is especially suitable for the sealing welding of stainless steel shells and aluminum shells in the manufacture of lithium batteries, and has high customer acceptance.

Second, the operation is simple and convenient

The battery spot welding machine adopts pneumatic control, the micro switch controls the welding ignition, the welding point is white and bright, it is very firm, can maintain consistency, and is equipped with a positioning fixture. There is no technical requirement for the operator, and the batch welding can be quickly standardized. Products with high qualification rate have high production efficiency.

Third, the performance is stable and reliable

It is controlled by 16-bit microprocessor and has a variety of welding program storage. The battery spot welding machine can maintain the same energy output per weld. It has high stable output and is not affected by the fluctuation of the power grid. It can be applied freely on the production line.

Fourth, powerful

The battery spot welding machine has the functions of automatic compensation of power supply voltage fluctuation and strong anti-interference ability, stable operation and good solder joint consistency. The main circuit adopts high-power thyristor non-contact control, high reliability and long life. The battery spot welding machine adopts a high performance pneumatic system, the upper electrode movement speed is adjustable, the welding speed is fast, and the impact and noise are small.

Reputable battery spot welding machine strictly controls all systems and accessories technology, processing technology, performance testing and other aspects, stable and reliable to provide technical support for production enterprises. Because the welding technology has a deep knowledge, and the good quality battery spot welding machine can also meet the welding of different materials, requirements and shapes of various workpieces, it also has absolute guarantee for the safety of field workers.

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Introduction to energy storage studs welding machine

Energy storage stud welding does not require gas protection and is relatively simple to operate . It is suitable for automated production lines , so this welding technology has been widely used in automotive welding production lines . The productivity of stud welding depends on the charging speed of the capacitor , which can be achieved by hand welding up to 8/min and automatic welding to 60/min . induction welder.

The energy storage stud welding machine is composed of welding power source , rectifier , storage capacitor , controller , welding torch , ground clamp and welding cable . The welder obtains the voltage by controlling the charging of the capacitor , and the thyristor discharge completes the welding discharge time of 1-3 milliseconds . It is characterized by short time , small thermal deformation , and is suitable for stud welding of thin plates . It is widely used in shipbuilding , automobiles , electric control cabinets , cabinets , curtain walls , elevator parts and other industries .

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The working principle of high frequency induction heating welding machine?

High frequency induction heating welding machine is also known as high frequency heating machine , high frequency induction heating equipment , high frequency induction heating device , high frequency heating power supply , high frequency power supply and high frequency electric furnace . High frequency welding machine , high frequency induction heating machine , high wave induction heater (welder ) , as well as intermediate frequency induction heating equipment , ultra high frequency induction heating equipment and so on . It has a wide range of applications . The principle of work : first , in the high frequency machine , a set of unique electronic circuits will be transformed into high frequency alternating current (50Hz ) from the input of the grid into high frequency alternating current (generally above 20000Hz ) ; after the high frequency current is added to the inductor coils (i . E induction coils ) , the electromagnetic induction generator is converted into a high frequency magnetic field and is used at the place . In a metal object of a magnetic field , a current (eddy current ) is generated in a metal object that is proportional to the intensity of a magnetic field by the effect of eddy current ; (the vortex is affected by the skin effect , the higher the frequency , the more concentrated on the surface of the metal object ) . When the eddy current flows in a metal object , it generates heat by means of the inherent resistance value and the principle of current heating effect . This heat is not transmitted by external heat , as is the case with other heating methods . It is generated directly inside an object . Therefore , this heating method , fast speed , high efficiency . If necessary , it can melt any metal in an instant . Moreover , its heating speed and temperature are controllable .

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What are the main points of proper use and maintenance of the sensor?

The sensor is a kind of precision tool, which has high price and high technical content. Therefore, it must be carefully used and carefully maintained.

1) When multiple sensors are used at one point of use, there is a sensor storage rack and numbered.

2) Before using the sensor, wipe the contact surface with a fine gauze. Handle it gently to prevent bumping and deformation.

3) When installing the sensor, the clamping mechanism such as the pressing bolt or the eccentric chuck must be tightened, and the positioning block fixing screws should be checked frequently and should not be loosened.

4) Water connection is the key, no mistakes are made, no omissions are made, and power is allowed to be confirmed after water is passed.

5) The effective circle and workpiece clearance should be checked regularly according to the requirements of different sensors. The effective circle of deformation should be adjusted before use.induction welder.

6) If the position of the magnetizer is changed or other accessories are loose, etc., adjust it before using it.

7) After the sensor is used, wipe off the iron filings and oil to put it back on the storage rack. The magnetism of the crankshaft sensor sometimes combines with oil and iron chips to form a hard shell, which may cause a short circuit.

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The gears are tempered and heat treated by a high-frequency heating machine, which defects are easy to produce?

The gear adopts high-frequency heating machine for quenching and tempering to heat treatment . Due to the influence of operating process and surrounding environment , it is easy to produce defects such as low hardness , uneven hardness and deformation . These defects can affect the service life of the gears , and the gears will be scrapped . induction heater.Therefore , it is very important to understand the causes and preventive measures of defects .

First. the causes and precautions of low hardness defects are as follows: 1. The carbon content of gear steel is low . For this reason , we should check the chemical composition of steel before heat treatment . 2. quenching heating specifications are not appropriate , for this , when using high-frequency heating machine quenching , we should adjust the quenching specifications . 3. The tempering temperature is low . For this , we should increase the tempering temperature .

Second. the causes of the uneven hardness defects and preventive measures are as follows: 1. The original steel structure is poor . For this , we should check the quality of the steel . 2. quenching and tempering heating temperature is not uniform , for this reason , we should improve the uniformity of quenching and tempering temperature .

Third. the causes of the deformation defects and preventive measures are as follows: 1. Heating is uneven , so we should improve the heating conditions . 2. Improper cool specifications , we should choose the correct cool method .