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FAQ FRO ANGLE STRAIGHTENING MACHINE

  • Q What is Technique Evolution of 3 in 1 H Beam Assembly Welding Straightening Machine?

    A
    1. 1. Background on evolvement of 3 in 1 Vertical H Beam Welding Machine is to replace H Beam Welding Production Line, in the field of producing small to medium sized H Beam, so as to save cost and raising productivity for customers. It begins from year 2005, come into mature business product in 2009 pushed by Wuxi JACK, and has undergone many variations over the past 16 years, to today by end of 2025, and still sees diversification on its target customer. In other words, this 3 in 1 Vertical H Beam Welding Machine has gradually sees division on market;
    2. 2. The major diversification on design and technique of Assembly Welding Straightening 3 in 1 Vertical H Beam Welding Machine mainly embodies at below 3 aspects of:
    1. 1) Machine Main Structure: There is great difference, between Wuxi JACK machine, compared with that of other producers. In a word, Wuxi JACK machine has much more strong and durable mechanical structure, which have been proved by customers investigation and feedback;
    2. 2) Machine Control Mode: Majority of Wuxi JACK 3 in 1 Vertical H Beam Welding Machine works as individual equipment; On the other hands, some customers purchase 2 or more sets of machine, sometimes equipped with 180° overturning table, to compose into an automatic H Beam production line, this can greatly increase productivity;
    3. 3) Welding Mode: As introduced in question on “Welding Technology Trend”, welding modes of 3 in 1 Vertical H Beam Welding Machine also undergoes great development with 16 years time.

  • Q Why Conveyors of 3 in 1 Vertical H Beam Welding Machine have Functions of drive/ Elevation with Motor / Hydraulic drive?

    A
    1. 1) This question was raised by a Moscow customer in Aug. 2025. When their ordered PHJ20 model 3 in 1 Vertical H Beam Welding Machine being installed at end user facility, put into trial run, they find the first 2 segments of outfeed conveyor roller tables can be lifted up within certain stroke, under the drive of hydraulic oil cylinders. Customer asked Wuxi JACK on its purpose;
    2. 2) The reason is, after large current SAW welding, in 3 in 1 Vertical H Beam Welding Machine, longitudinal ways of H Beam will have temporary bending up, under effect of SAW welding heat input. To reliably holding up this bent H Beam, outfeed roller tables of machine should be able to raised up a little. After H Beam cooling down, its longitudinal body will restore to normal straight shape, the outfeed roller tables can drop down accordingly.

  • Q How to Quickly Set up H Beam Production Shop, with 3 in 1 Vertical H Beam Welding Machine?

    A For customers, this is easy and cost saving task, compared with introducing traditional H Beam Production Line of separate machines. The major steps are:
    1, Plan out an area of 600m2 (38m length by 16m width) for machines installation;
    2, Purchase the 2 machines necessary, in sequence of process technology:
    1. 1) CNC Flame Cutting Machine: Some customers also require on plasma cutting function on it;
    2. 2) 3 in 1 H Beam Assembly Welding Straightening Machine;
    3, Before installing these 2 machines, making sure utility, especially electric power grid of workshop has sufficient capacity, to accommodate on the above 2 machines. We have an Argentina customer, they bought these 2 machines from Wuxi JACK in Oct. of year 2024, finished installation in March 2025, and found their electricity was not so sufficient. This customer enhanced their power capacity in July 2025 for running on the 2 machines.

  • Q How to Implement Effective Trouble Shooting on 3 in 1 Vertical H Beam Welding Machine, if Machine encounters Shut Down?

    A
    1. 1) First, Wuxi JACK produced 3 in 1 H Beam Assembly Welding Straightening Machine has very stable high stand performance on daily operation, benefitting from innate delicate design / superior quality control/ Continuous improvement/ Rich experience. Operation and service properly, there should be very seldom malfunction with our 3 in 1 Vertical H Beam Welding Machine. This is validated by hundreds of customers worldwide over the past 16 years, from year 2009 to year 2025;
    2. 2) To achieve foolproof measures, we also prove list of common trouble shooting methods, give failure phenomenon/ possible cause/ recommended solution, in manual book of the 3 in 1 Vertical H Beam Welding Machine. This can help customer quickly identify trouble and solve it in high efficiency;
    3. 3) As last resort, if customer can not solve problem by themselves, Wuxi JACK engineer team is always available for supporting customer. But we never have such moment (Give technical support on trouble shooting our 3 in 1 Vertical H Beam Welding Machine), thanks to superior and steady performance of our machine.

  • Q Why Conveyors of 3 in 1 H Beam Machine have Functions of drive/ Elevation with Motor / Hydraulic drive?

    A
    1. 1) This question was raised by a Moscow customer in Aug. 2025. When their ordered PHJ20 model 3 in 1 Vertical H Beam Welding Machine being installed at end user facility, put into trial run, they find the first 2 segments of outfeed conveyor roller tables can be lifted up within certain stroke, under the drive of hydraulic oil cylinders. Customer asked Wuxi JACK on its purpose;
    2. 2) The reason is, after large current SAW welding, in 3 in 1 Vertical H Beam Welding Machine, longitudinal ways of H Beam will have temporary bending up, under effect of SAW welding heat input. To reliably holding up this bent H Beam, outfeed roller tables of machine should be able to raised up a little. After H Beam cooling down, its longitudinal body will restore to normal straight shape, the outfeed roller tables can drop down accordingly.

  • Q Can 3 in 1 H Beam Welding and Straightening Machine being Used as Single Purpose H Beam Welding Machine?

    A
    1. 1) In theory, yes. But in practical condition, very seldom customer do in this way, and we do not recommend such practice either. The reason is, compared with H Beam Gantry Welding Machine, which welds on H Beam with 45° welding, with to and from several times welding, and can produce welding toe size of over 12mm, in this 3 in 1 H Beam Welder Machine, welding is usually performed only one time on H Beam, confined from its structure and way of operation; Besides, H Beam is in position of vertical, so the max. welding toe size is up to 10mm;
    2. 2) The advantage of 3 in 1 H Beam Welding Machine lies in its integration, that it combines assembly and straightening function together with welding, so as to produce small and medium I H Beam with single machine, not welding capacity.

  • Q Please Give Adoption Condition of Welding Technique in 3 in 1 H Beam Welding Machine:

    A There are mainly 3 types of welding in 3 in 1 H Beam Welder Machine:
    1. 1) Single Arc SAW: This is absolutely the No.1 choice, applicable for over 90% of application cases, the default configuration in machine. This welding mode has good points of: Stable performance, lower running cost, high efficiency, easy operation;
    2. 2) Twin Arc SAW: This is attributed as personalized SAW welding mode. Utilizing double wires of Φ1.2-1.6mm, this welding mode can raise welding speed of around 20%, and get longer welding seam. However, it has serious negative point: That twin arc is easy to have its welding wire entanglement during feeding in, because of small diameter and hence insufficient strength of welding wire, which lead to machine shut down;
    3. 3) CO2 Gas Shielded Welding: In 3 in 1 H Beam Welding Machine, this welding mode is used for producing small thickness H Beam, with flange and web of 4-8mm thick, the height and width of H Beam is also correspondingly smaller. The welding torches need to have water cooling unit during operation;
    Sometimes, although not often seen, some customers select to have their 3 in 1 H Beam Welding Machine being equipped with more than one type of welding: Single arc and twin arc together for SAW; Or, single arc SAW together with CO2 GMAW. Of course, this will add on total price of machine.

  • Q How to Appraise on Welding Quality from 3 in 1 H Beam Welding and Straightening Machine?

    A
    1. 1) First, in 3 in 1 H Beam Welding Machine, welding technique in flat fillet welding: The welding torch is in the position of 45°, performs welding with finished seam of triangular shape. The welding is implemented only one time on H Beam;
    2. 2) Second, there are many factors affecting on welding quality: Quality of welding power supply, operation correctness (Process parameters set up, and torch position adjustment), which is determined by customer and supplier on 3 in 1 H Beam Welder Machine respectively;
    3. 3) Sum up, welding seam quality can be judged with: Infusion of welding seam; Cover surface and lines; Welding splashes.

  • Q When Customer Buys on 3 in 1 H Beam Fabrication Welding Machine, how to Select between PHJ and ZHJ model?

    A This is another practical question. Generally speaking, 2 criterions help customer make the best choice:
    1, How much percentage of their H Beam are non-symmetric? If there are many, should select PHJ; If no or very small, then choose ZHJ;
    2, The max. size H Beam. Generally speak, PHJ produces a bit larger H Beam than ZHJ;
    3, Price of PHJ is 5% higher than ZHJ counterpart.

  • Q What is Workshop Requirement on Installing 3 in 1 Vertical H Beam Welder Machine?

    A
    1. 1) Workshop Land Space: H Beam Welding 3 in 1 Machine has compact dimension. For example, the No.1 selling volume model ZHJ15, one set of the machine occupies land area of: 41m length x 9m width = 360 m2;
    2. 2) Workshop Height: One set of Wuxi JACK ZHJ15 has height of 4.9m. There should be traveling crane overhead, for hoisting flange/ web/ T Beam onto and off conveyors. Caution on height of machine, we had encountered such case at May 2025: One set of PHJ20 was delivered to Russian customer workshop, which has total height of 5.3m, this conflicts with travel crane. They worked together us to solve the problem;
    3. 3) Installation of 3 in 1 H Beam Fabrication Welding Machine involves foundation prepare. For which we will provide foundation drawing to customer during machine production;
    4. 4) Sufficient Electric Capacity: Power of one set of ZHJ15 is around 20KW, together with 140KVA 2 sets of welding power supply. Be sure to maintain sufficient capacity of electricity. In Sep. 2025 we have an Argentina customer, who expanded their workshop capacity, to accommodate on our ZHJ15 model 3 in 1 Vertical H Beam Welder Machine.

  • Q Could you Give General Level of Variable Cost for Running on H Beam Welding 3 in 1 Machine?

    A Compared with H Beam Production Line, the advantages of 3 in 1 H Beam Fabrication Welding Machine not only reflected in period cost of investment budget and workshop floor, but also subsequent everyday operation:
    1. 1) Number of Operator: From 4 people (Work on assembly, welding, straightening 3 machines respectively, and 1 as logistic and backup) to 1 people working on 3 in 1 machine;
    2. 2) Utility: Electricity, power of H Beam Welding 3 in 1 Machine is 20kW;
    3. 3) Hydraulic/ mechanical oil to be replaced periodically;
    4. 4) Consumables: SAW welding wire and flux, this costs main during production. Consumption depends on H Beam plate thickness.

  • Q How do Customers make Choice between 3 in 1 H Beam Fabrication Welding Machine and H Beam Production Line?

    A This is very practical question, every customer will ask this when they decided to introduce new equipment on H Beam production:
    1. 1) This is wholly determined with specifications of H Beam. Besides the common seen criterion, that large H Beam, which means SAW welding need to have multiple passes of seams, with sizes over 12mm;
    2. 2) There are also many small H Beams, although looks small in size, but, because of its large thickness, for example, on Oct.1st 2025, we had a Singapore customer inquiry, who has H Beam flange 400mm width with 40mm thickness. This can only be straightening with YTJ80 model hydraulic H Beam Straightening Machine;
    3. 3) Wuxi JACK engineers work with customer to find which is more applicable, H Beam Welding 3 in 1 Machine or individual H Beam production machine.

  • Q Is it Difficult to Operate on 3 in 1 Vertical H Beam Welder Machine, and what is Requirement on Operator Skill?

    A Although a complicated machine integrating 3 functions of H Beam assembly/ welding / straightening, H Beam Welding 3 in 1 Machine is very user friendly. This is characteristic of all automatic machines:
    1. 1) Operator task is to load on and off workpiece onto and from the machine, before/ during/ after T H Beam production, and watch on automatic operation in the process. At completion of SAW welding, knock off welding flux from H Beam;
    2. 2) As to skill, operator need to command on capability of managing on machine operating panel, and judging on H Beam welding performance.

  • Q What is Wuxi JACK Contribution on Assembly Straightening H Beam Welding 3 in 1 Machine?

    A
    1. 1) Take Lead on Machine Development: Wuxi JACK is the first company to deliver mature product of H Beam Welding 3 in 1 Machine into market. From the year 2000~ 2008, this machine was only in laboratory stage. Due to some technical difficulties, this machine could not be pushed to market in genuine sense;
    2. 2) In 2009, Wuxi JACK took the lead in launching the first set of ready to use 3 in 1 H Beam Fabrication Welding Machine to customers, upgrading it from years of concept design to practical application;
    3. 3) Advanced Design and Superior Quality: Wuxi JACK H Beam 3 in 1 machine has comprehensive advantages compared with other suppliers, as introduced at this page. Customer using our machine can get the ideal rewarding on H Beam quality and financial reward.

  • Q Could you Introduce Configuration and Brand of Major Components of Wuxi JACK Steel Plate Flat Joint Butt Welding Machine?

    A Wuxi JACK steel Plate Flat Butt Welder machine adopts with the first class suppliers, to fully guarantee quality and performance:
    1. 1) SAW/ CO2 Butt Welding Power Supply: Chinese HUAYUAN or AOTAI. Customer can also designate brand, for example, we had a customer once asked for American Lincoln;
    2. 2) HMI (Human machine interface) and inverter: Japan Mitsubishi or Germany Schneider;
    3. 3) Electric Control Elements: Germany Siemens;
    4. 4) Hydraulic pump station and electromagnetic valves: Chinese YOSHENG

  • Q Why there is Restriction on the Minimum Width of Plate for Butt Welding in Steel Plate Joining Butt Welding Machine, and how to Joint on Small Plates?

    A
    1. 1) The conventional specification of the minimum width in Wuxi JACK steel Plate Flat Butt Welder machine is 300mm, and, it can be special designed according to customer demand, for example, 145mm for a Cambodia customer in Aug. 2025;
    2. 2) The reason is, the mechanism for holding on small plate is hydraulic drive pressing blocks, which are distributed in regular interval along butt welding table of machine. To secure firmly these small plates, there is limitation on the minimum width of plates;
    3. 3) Usually, the steel Plate Flat Joint Butt Welding Machine is designed for butt welding on single pair of sheet metal, especially on medium and large width plates, 500mm and above; When customer want to have several pairs, for example, 3 pairs to be butt welded with one time stroke, these small plate need to be pieced and tack welded into an integral piece first, then sent to machine for butt welding.

  • Q What Should Operator Do when Working on Steel Plate Flat Joint Butt Welding Machine?

    A Operator should command skill on managing the Oxygen fuel flame triple cutting operation, and overseeing butt welding step:
    1. 1) The flame triple cutting entails ability and experience on adjusting gas pressure of Oxygen/ Acetylene, and adjusting angle of flame triple cutting torches, based on beveling requirement for plate butt welding;
    2. 2) Wuxi JACK MP series steel Plate Flat Butt Welder Machine adopts fully penetration welding, which means single face welding double face completion. Although it is automatic process, operator should have knowledge on what are proper process control parameter range for implementing on butt welding process, including welding current/ voltage/ wire feeding speed.

  • Q Please Give General Daily Running Cost of Steel Plate Flat Butt Welder Machine, Consumables:

    A
    1. 1) Cooling water --- This costs the minimum, just ordinary running water can be used. It should be replaced around every half a year, under operation arrangement of single shift;
    2. 2) SAW Welding wire --- This is one of major consumables of plate butt welding. It should be Φ2.5mm – Φ4.0mm SAW welding wire. Under the working speed of 500- 800 mm/min., consumption is around 1- 2kg SAW welding wire every hour;
    3. 3) SAW Welding Flux --- There are 2 different types of SAW welding flux for operating on steel Plate Flat Butt Welder machine: The top layer SJ101 or 301 ordinary type, which is the main consumed flux in butt welding, and special TGF-B or OK Flux 10.69 at bottom layer, which, although only 1/10th consumption volume of top layer, plays key role in guaranteeing quality and performance of butt welding;
    4. 4) Oxygen and Cutting Gas (Acetylene or Propane) --- Depending on production output of steel Plate Joining Butt Welding Machine. Some customers not very often use triple cutting;
    5. 5) Copper Pads, Cutting Torch, Welding Torch --- These units have longer service life, in the middle between long service parts and consumables, which greatly depend on maintenance and production output of machine. Operating properly, its replace frequency can be obviously reduced.

  • Q Please give Production Variable Cost of Steel Plate Joining Butt Welding Machine, Utilities

    A This mainly involves 4 aspects of: Electricity/ Gas/ Hydraulic Oil/ Water
    1. 1. Flame triple cutting: There are three ways of cutting gas pipeline:
    1. 1) Pre-heating Oxygen;
    2. 2) Cutting Oxygen;
    3. 3) Cutting gas: Acetylene / Propane;
    With gas array and manifold;
    1. 2. Hydraulic Drive: For driving on pressing blocks, which secure metal plates against bottom copper pads. The corresponding pump station has motor power of 4kW; The hydraulic pressure is 8MPa;
    2. 3. Cooling Water Circulation: In Wuxi JACK Steel Plate Flat Butt Welder Machine, there are several pieces of water tube (Blue color) connected between butt welding work table and cooling water tank. The volume of water tank is 400L; The water pressure is 0.2~ 0.4 MPa;
    3. 4. Electricity: One set of Wuxi JACK MP30 (One of the often selected model) steel Plate Flat Joint Butt Welding Machine has total power of around 12.5kW+ 75KVA;

  • Q What are Important Process Control Parameters, when Working on Sheet Metal Steel Plate Butt Welding Joining Machine?

    A In sequence of operation:
    1. 1. Steel Plate Loading In: By means of alignment mechanism along input and output conveyors: Alignment rollers/ Leadscrew/ Pushing oil cylinders, make sure fully linearity and straightness of the 2 pieces of butt welding long plate. This is very critical for subsequent steps operation. As to steel plate sending in speed, switch between copper pads elevation, also selects on Fast/ Slow speed of plate transportation;
    2. 2. Flame Triple Cutting on edges of steel plate: This is optional configuration of steel plate Flat Butt Welder Machine, for cutting out grooves before butt welding. Operator need to adjust on:
    1. a) Tilting angle of triple cutting torches;
    2. b) Pressure and flames of Preheating Oxygen/ Cutting Oxygen/ Cutting Gas;
    1. 3. SAW Butt Welding: This is the core operation in steel Plate Butt Welding Joint Machine. Operator need to adjust on:
    1. 1) Butt welding velocity, based on thickness and material of joint plates, by means of HMI touch screen;
    2. 2) Butt welding current/ voltage, by means of HMI touch screen, or welding power supply control console.

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