Tank welding machine is actually a transformer with lower external characteristics, which converts 220V and 380V alternating current into low-voltage direct current. Generally, welding machines can be divided into two types according to the output power type, one is AC power and the other is DC.
Here is the content list:
l What is a tank welding machine?
l What are the specific types of tank welding machines?
l Working principle of tank welding machine.
The tank welding machine can be said to be a high-power rectifier. It is divided into positive and negative poles. When AC power is input, it is transformed by a transformer, and then rectified by the rectifier, and then outputs a power supply with reduced external characteristics.
The output terminal is on and off. When it is turned on, a huge voltage change will be generated. When the two poles are short-circuited in an instant, the arc will be ignited. The arc will be used to melt the electrode and the welding material, and the purpose of combining them will be achieved after cooling. Welding transformers have their own characteristics,The external characteristic is the sharp drop in voltage after the electrode is ignited.
1. Light tank welding machine is mainly full rivet type or mixed rivet and welding.
2. The medium tank welding machine is to forge several steel molds, then fill with solder and directly weld.
3. Heavy-duty tank welding machine, the steel plate is forged into a gear staggered shape, first buckled like a button, and then filled with solder, mainly to reduce the burden of the heavy armor on the solder.
The main component of the tank welding machine is a step-down transformer. The two ends of the secondary coil are the work piece and the electrode to be welded. They will ignite the arc during operation and weld the electrode to the gap of the work piece under the high temperature of the arc. Because the iron core of the tank welding machine transformer has its own characteristics, it has the characteristics of a sharp drop in voltage, that is, the voltage drops after the electrode is ignited; when the electrode is short-circuited due to adhesion, the voltage drops sharply.
During the welding operation of the welding machine, although the current in the circuit is equal everywhere, since the resistance is different everywhere, the resistance at the unfixed contact is the largest. According to the law of thermal effect of flow, Q = IRt: When the current is equal, the greater the resistance, the higher the heat generation. Therefore, in the welding process, the contact resistance of the electrode contact point as the contact point of the metal body is the largest, so the electric heat generated in this part is naturally the largest, and the electrode is an alloy with a lower melting point.
The tank welding machine first uses a pulse generating circuit such as a 555 time base circuit to generate a rectangular pulse wave, then uses a transistor for current amplification, and then uses a pair of complementary field-effect transistors for voltage amplification to generate high-frequency signals, and finally uses the transformer with To boost the voltage, and get the induced alternating current on the secondary winding. Its power depends on the amplification capability of the amplifying circuit.
Tank welding machines mostly use single-ended forward inverter circuits composed of IGBT tubes, and most of their control systems use pulse width modulation chip SG3525. The inverter frequency is 20kHz, which can control the external characteristics of constant current.
When the system is at no load, the PWM modulator will output pulses intermittently due to voltage feedback control. Due to the low frequency of intermittent oscillation and narrow pulse width, not only the no-load loss is small, but the transformer is not easily saturated. Because this kind of welding machine adopts the control technology with pulse width modulation PWM as the core.
What is more? WINCOO provide not only tank welding machines, but also pipe spool fabrication solutions for customers from everywhere!
H-beam is a general term for the construction of beams or columns used in civil engineering. Since all parts of H-beam are arranged at right angles, H-beam has strong bending resistance in all directions, simple construction, cost saving and has the advantages of light structure and light weight, and has been widely used. H beam straightening and welding machine also plays an irreplaceable role in the production process of H-beam.
How to deal with the distortion of steel when H beam straightening and welding machine encounters it?
What is the function of H-beam straightening welding machine?
What is the product feather of H-beam straightening welding machine provided by WINCOO ENGINEERING?
Use H beam straightening and welding machine to weld H-beam distortion treatment method: If the H-beam flange has out-of-tolerance torsion, it means that the H-beam has distortion that needs to be corrected. The upper flange of the H-beam can be inspected with a level ruler. First, adjust and ensure that the level of most of the flanges of the H-beam body is within the deviation range, measure the excess part and correct it accordingly. Measurement method: The frame level is placed in the width direction of the detection flange, and the feeler gauge is used to pad the lower side to the level, and the reading of the feeler gauge can be used to know how much the twist is. Or use a spirit level to directly measure two points on the width edge of the flange with a ruler, and the difference between the readings is the torsion value.
H-beam straightening and welding machine is special equipment for H-beam assembling, welding and straightening. It completes the process on one piece of equipment through assembling machine, welding machine and straightening machine, which improves production efficiency, reduces equipment cost and saves money. cost. Space equipment installation is efficient production equipment for H-beam and T-beam. A variety of welding methods can be used for single arc single wire welding, single arc double wire welding, or submerged arc welding according to the actual needs of users. Lubricate in time, so as to achieve good lubrication, reduce wear and prolong the service life of equipment.
1. The PHJ type H-beam straightening welding machine is a new type of high-efficiency equipment in the H-beam production process.
2. It is mainly composed of main engine, input conveyor, output conveyor, tie rod centering system, welding power, hydraulic system, electric control system, etc.
3. The host is the core of the machine, which consists of the upper gantry and the lower base assembly. The upper gantry can press the support beam web; 4 sets of guide rail guide system, the guide is stable and reliable.
4. The positioning of web and flange adopts hydraulic transmission. Both sides are mechanical synchronous clamping and centering system to realize automatic positioning and centering. An eccentric wheel for fine adjustment is also designed.
5. During the assembly process of H-beam, the end is equipped with an automatic hydraulic lifting type stopper to ensure that the end of the web is aligned with the end of the flange.
6. The welding torch adjustment device adopts UP/DOWN, LEFT/RIGHT and angle adjustment to ensure that the welding seam is always aligned.
7. The straightening device adopts the downward pressure of the oil cylinder. Strong straightening ability and easy adjustment of straightening ability.
8. The input conveyor belt is 2.6m*3 sections, of which 1 section is electrified. The output conveyor is 11.5m, and two of them are lift type to support H-beam.
9. There is a tie rod system at the input end, a total of 3 tie rod boxes, which are used for one-time centering of the web and flange.
10. Equipped with 1 set of hydraulic system. Hydraulic pumps from professional manufacturers are easy to maintain and have a long service life.
11. The welding power source adopts China MZ1000 or American Lincoln DC-1000, NA-3 welding power source, single arc single wire welding head and control box.
12. Japan Mitsubishi PLC control.
After reading, do you have a deeper understanding of H-beam straightening welding machine? For further information, please contact WINCOO ENGINEERING. We will be very pleased to help you!
Tank lifted by N sets of 5T-3M model electric chain hoist, 5 tons of electric chain hoist can be used up to 60% of its max tonnage, that is, no more than 3 tons.The max stroke of the electric chain hoist is 3 meter(length can be customized).
Equipment operation steps:
1.First,making the top first circle plate of the tank body on the bottom plate;Then install the expansion ring on the first ring plate(The bottom of the expansion ring is about 200mm away from the bottom edge of the first ring plate);Finally, tighten the ring on the first ring plate with the screw jack.
2.Installed the lifting column on the inner side of the tank 400mm away from the tank wall and N lifting columns are evenly arranged on the inner side of the whole tank.Then the upper end of the column and the bottom plate of the tank are fixed with two pull rods as triangular stay support.
3.Using the pull rod to pull the two adjacent lifting columns to form an integral circle. And a lifting lug is welded on the expansion ring corresponding to the lifting column, the baffle is welded on the tank wall at the upper end of the expansion ring to block the ring.
4.Hang the electric chain hoist on the lifting lug at the top of the column and Hook the hook of the electric hoist on the lifting lug of the expansion ring.Then install all the electric hoist in order and connect the power supply of all electric hoist to the main control board(The main control board can control each electric hoist separately, and can also control all electric hoist centrally and synchronously).
Note:Switch on the total power supply, then pre-tighten each electric hoist, check whether the receiving force of all electric hoist is uniform and check whether all lifting points are normal.If everything is normal, it can be lifted.
5.Switch the main control board to the centralized control and switch on the overall rising button, so that all electric hoist will rise synchronously.In the process of lifting, if some electric hoist fails to work, the master control board shall be converted to separate control. After re-tightening the loose electric hoist, lift it as a whole until it reaches the specified height. Finally, adjust the lifting height to be consistent through separate adjustment.
6.Make the second ring plate, after welding the vertical seam and block, drop all the electric hoist as a whole, and let the first ring plate fall back to the second ring plate, so that the overall lifting of the first ring plate is completed.
7.After the girth seam welding is completed, loosen the expansion ring.And lower the rising ring to the designated height at the bottom of the second ring plate with the electric hoist, and then carry out the preparation for the next lifting.
Pipe Spool Fabrication Line have seven steps:blasting→cutting→beveling→fitting-up→welding→non destructive testing→paint spraying.
We need know the size,the weight,the material and clean level of the workpiece.Then we can offer suitable machine to you.
2. Cutting machine
There are three types of cutting machine,are Band saw cutting machine,5Axis CNC flame and plasma cutting and profiling machine and Cutting and beveling all in one.
We need know the size,the weight,the material of the workpiece.Then we can offer suitable machine to you.
①Band saw machine is cold cutting, suitable for carbon steel, stainless steel,there are four lines are 2-24'',8-32'',12-48'' and 24-60''.It’s PLC control,with fixed length function.
②5Axis CNC flame and plasma cutting and profiling machine is hot cutting,suitable for carbon steel.It’s also PLC control.
③Cutting and beveling all in one is cold cutting,and there are three lines are 2-16'',2-12'' and 2-8''.
3.Beveling/Facing machine groove shape are J,U,V,X and so on.It’s PLC or CNC control.Suitable workpiece dimensions are 2-16'',4-24'',8-32'',12-48'',24-48'' and 24-60''.
We need know the size,the weight,the material of the workpiece.Then we can offer suitable machine to you.
5.Welding machine,the welding procedure is Root pass→Filling→Capping,there are two types of welding machine: split type and cantilever type.
6.Non destructive testing is NDT,it has three methods of testing:RT,UT and X Ray.
7.Paint spraying is through the Spray booth to achieve.
We need know the size and shape of the workpiece,then we can offer suitable machine for you.
Large vertical steel storage tank is an important crude oil and refined oil storage and transportation equipment in the petrochemical industry. Welding is the main process of storage tank construction, which is of decisive significance to the construction quality and progress. Therefore, the demand for tank welding machines in the processing industry continues to rise.
How to deal with solder balls at the arc end of tank welding machine?
What are the precautions for the use of tank welding machine?
What are the working steps of tank welding machine?
1. Welding offset
It may be that the welding position is not correct or there is a problem with the welding torch. At this time, it is necessary to consider whether the TCP (the position of the center point of the welding torch) is accurate and adjust it. If this happens frequently, check the zero position of each axis of the robot and re-calibrate to correct it.
The welding parameters may be improperly selected, the angle of the welding torch or the position of the welding torch may be incorrect, and the power can be adjusted appropriately to change the welding parameters, adjust the posture of the welding torch and the relative position of the welding torch and the workpiece.
It may be that the gas protection is poor, the primer of the workpiece is too thick or the protective gas is not dry enough, and it can be dealt with by adjusting accordingly.
4. Too much splash
It may be due to improper selection of welding parameters, gas composition or too long wire extension. We can adjust the power to change the welding parameters, adjust the gas proportioning instrument to adjust the gas mixture ratio, and adjust the relative position of the welding torch and the workpiece.
5. An arc crater is formed after cooling at the end of the weld
Add the submerged arc crater function in the work step during programming, which can be filled.
When using the tank welding machine to weld the root of the weld, start welding at the lower edge of the spot-fixed weld. Welding arc ignition by scratching method. Don't rush to weld. After the arc is ignited, preheat the starting point of the weld. The preheating has two purposes: one is to avoid the low temperature of the spot-fixed weld at the starting point and the small current used for the welding current, and the sticking phenomenon occurs, resulting in pores and leaving defects in the quality of the weld. If it is welded directly, when it is welded to the upper end joint of the spot-welding seam, the temperature of the welding seam is low, and the temperature of the welding pool cannot reach the temperature state of normal welding, which will lead to the phenomenon of impermeability or poor fusion of the welded joint, which will affect the Weld quality.
The strip material is introduced into the tank welding machine through the feeding machine, and the strip material is extruded and formed through the roller, and then arc welded with mixed gas shielded welding, rounded, output the pipe of the required length, cut by the cutter mechanism, and then straightened Straighten the machine. Spot welding machines are used for spot welding connections between tape heads. Tank welding machine is a comprehensive set of equipment that continuously welds strips into tubes, rounds and straightens them.
Against this background, do you have a deeper understanding of the tank welding machine? WINCOO ENGINEERING CO., LTD always focuses on the needs of customers and therefore offers tank welding machines and actively addresses customers to solve their problems.