In recent years, with the large-scale application of tank welding machine, the welding quality requirements of tank welding machines are getting higher and higher. The following points should be paid attention to before purchasing tank welding machines.
Here is the content list:
l Know the production performance of tank welding machine in advance.
l Need to understand the characteristics of tank welding machine before buying.
l Detailed description of the purchase reference of tank welding machine.
Applicable materials for tank welding machine:tank welding machine uses ordinary welding wire as the repair material. The materials are: gray iron, ductile iron, stainless steel, carbon steel, die steel, aluminum, aluminum alloy, copper and other conductive metals can be repaired .
Scope of application of tank welding machine: tank welding machine is a professional precision repair welding equipment for small defects such as pinholes, sand holes, pores, cracks, bumps, scratches, pits and mechanical parts surface wear and mold wear. It is widely used in mold industry, foundry industry, electrical appliance manufacturing industry, medical equipment, automobile, shipbuilding, boiler, construction, bridge construction and other industries.
(1) Low heat and normal temperature welding, the matrix does not generate heat, does not produce thermal deformation, the metallographic structure near the welding point is unchanged, there is no stress, no crack, no hard spot hardening phenomenon, and does not affect the machining performance.
(2) Simple operation, multi-purpose in tank welding machine. In addition to the surfacing repair function, it can also strengthen the surface coating of cemented carbide such as tungsten carbide.
(3) Argon gas protection has good adhesion, high welding strength, metallurgical bonding, and re-solidification after the filling material and the matrix are melted at the same time, and the bonding is firm, dense, and does not fall off. After welding repairs, various machining processes such as turning, milling, planing and grinding can be carried out.
(4) The source of tank welding machine is wide, economical and practical, the whole machine is about 30KG, and it can be repaired online.
(5) Rotary self-destructive electrode deposition surfacing welding, easy to operate and high working efficiency.
(6) Environmental protection and no pollution. No harmful gas is generated, it can be directly held by hand, can be seen by eyes, and the welding position is accurate, the welding point is small, and the amount of repair after welding is small.
(7) The tank welding machine repair process is the repeated melting and accumulation of high-frequency welding repair points. No matter the size of the defect, it can be repaired as long as the pen tip can touch.
(8) Pure metal repair, no welding repair trace, welding repair effect meets quality inspection standards.
1. When purchasing tank welding machine products, go to formal manufacturing companies or large shopping malls, and choose brand-name and high-quality products with a high market share. Don't go to a small store for cheap, as the quality of the tank welding machine cannot be guaranteed.
2. Before buying, you can check the operation, conversion and installation of the switch on the panel, the power indicator light is on and off, the fan is normal, whether there is abnormal vibration and buzzing in the power supply part, whether there is a peculiar smell, and whether it is in appearance There are heat generation phenomena such as discoloration to ensure the quality of the tank welding machine and give full play to the performance of the tank welding machine.
3. The dealer can be required to provide a product quality inspection report or certificate when purchasing. Because tank welding machine products are national compulsory certification products, you must confirm whether the product has passed the "3C" certification when purchasing. You can also check online.
4. When purchasing, check whether the nameplate on the product has the name of the manufacturer, production address, specifications, model, welding current adjustment range, load duration, input voltage and current, etc., and then determine what you want to buy according to work needs tank welding machine.
5. Be sure to check whether the product has a grounding screw when purchasing. The grounding screw connection should be well grounded without paint. Whether the movement is clean and the insulation is damaged to ensure safe use. You can also check if necessary.
6. If you want to buy a gas-protected tank welding machine, check whether the accessories are complete, whether the wire feeder is oily, whether it rotates smoothly, whether the connecting cable matches the outer insulation, to ensure the stability of the arc.
What is more? WINCOO provide not only tank welding machines, but also pipe spool fabrication solutions for customers from everywhere!
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.
Hydraulic jacking system is an important machine for tank construction. The equipment is mainly used for inverted construction of vertical cylindrical steel tank (hydraulic lifting method) in petrochemical industry, inverted construction of steel liner in power plant chimney and inverted construction of vertical cylindrical low temperature tank. I will give you a detailed introduction of the hydraulic jacking system.
What are the characteristics and applications of hydraulic jacking system?
What are the types of hydraulic jacking system?
What is the working principle of hydraulic jacking system?
What are the construction steps of hydraulic jacking system?
1.The hydraulic jacking system are mainly used for vertical tank top to bottom construction.
2.Also it can be used for mega work piece jacking or lifting.
1.The system consists of hydraulic pump station, cylinders, steel wire, and strokes. Easy to installation and operation;
2.The system utilizes PLC central control to handle lift. Each power pack is equipped with auxiliary balance device to guarantee the precision of simultaneously lifting.
3.Hydraulic jacking system pump station has subsidiary manual control and central control two operation models. The cylinder can be adjusted to lift separately or to lift with several others as one group, and multi groups can also be integrated to lift reach better precision and better welding effect.
4.All the cylinders are with safety valve. It can be automatically locked to avoid cylinder/ tank dropping even under situation of power off, high-pressure hose broken, burst.
5.The cylinder is with one high pressure hose to avoid oil leaking that usually happen by the traditional multiple hoses. Cylinder will return to initial condition by itself weight.
6.Stroke of Hydraulic cylinder is 1475mm, which can satisfy each annular shell with 2500 plate one-step lift. Greatly reduce the time waste.
7.Hydraulic cylinder basic height is 2050mm, which can match automatic girth welding machine to proceed internal girth seam welding.
8.Module configuration, the hydraulic jack quantity can be adjusted as per different size of tank and weight
9.High efficiency, each time lifting or falling down only needs around 15 minutes.
10.Can well cooperate with our tank welding machines, which can greatly reduce the manpower cost and reduce the construction time; Usually one Horizontal seam welding machine can match 6-10 skilled welder. Vertical seam welding machine can match around 20-30 people skilled welder and butt/fillet welding tractor can match 6-15 skilled welder.
At present, we have three types of hydraulic jacking system in WINCOO Engineering Co., LTD. They are the following three: Advanced hydraulic jacking system, Simple unfixing Holding -latch hydraulic Jacking system and Simple chain type hydraulic jacking system.
Hydraulic jacking system (package unit) is evenly distributed around tank inner wall. Tank top and upper (the first layer) wall plates are lifted first and then install and weld wall plates of tank body. Self locking hydraulic jacking system and hydraulic hoist composing of lifting frame and lifting rod are adopted. When oil enters hydraulic jacking system, upper clamp fastens and lifts lifting rod and expansion ring and mobilize tank (including tank top) to ascend upward. When oil returns to jack, upper clamp returns with piston and lower clamp automatically fastens lifting rod without gliding. The jack repeats the movement and make lifting rod ascend with tank to designated height (spare height for next layer of plate). After butt weld of next layer of wall plates, open upper and lower loosening device and loosen upper and lower clamp to make lifting rod and expansion ring descend to lower expanded and welded rib plate of the next layer of wall plates and then lift. Repeat the process and ascend welded tan till the last layer of wall plates are installed and welded. The installation of the whole storage tank is completed.
The following short description gives the working procedure in outline. It can in certain details be modified when required.
1.The tank bottom – plates are placed on the prepared foundation and welded together.
2.The beams or lattice work of the roof are assembled and finally joined to the upper rim of the shell ring.
3.The hydraulic jacking system is installed in the tank. The plates of the second shell ring (next to the top ring) are positioned outside the first one.
4.The completed part of the tank (roof and top shell ring) is lifted hydraulically to a height at which the plates of the second ring can be moved into place and the roof sheeting can be completed.
5.The plates of the second shell ring are located exactly and welded together to the lower edge of the first ring.
6.The plates of the third shell ring are placed outside the second shell ring.
7.The completed part of the tank (roof the two uppermost shell rings) is lifted.
8.The above cycle of operations is repeated until the last (bottom) shell ring is finished.
9.The entire tank is lowered down to the bottom plate and welded to this.
10.The lifting equipment is dismantled.
Hydraulic jacking system is mainly used in large tank construction. WINCOO ENGINEERING CO.,LTD is supplying tank hydraulic jacking system to tank contractors worldwide.
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.