1. Purpose of HJ Series Lengthways H Beam Straightening Machine:
HJ series Lengthways Straightening Machine is for straightening on H Beam deformation along its lengthways direction, instead of on H Beam flange:
Typical longitudinal deflected H Beam, suitable for Lengthways Straightening Machine: (Fig.1)
2. Some Specialties with HJ Series Lengthways H Beam Straightening Machine:
1) Working Nature: HJ series machine is different branch product group from the HYJ/YTJ/WJ series straightening machine, which are the major category of H Beam Straightening Machine, for straightening on H Beam flange deformation along cross section:
Cross section of H Beam: (Fig.2)
2) Wider Appliable types Workpieces for the HJ Series Lengthways Straightening Machine: Not confined to welding H Beam. Instead, BOX beam/ Section Steel/ Pipe and other long slim structure members can also be straightened along its length direction.
3. Technical View on HJ Series Lengthways H Beam Straightening Machine:
1) Hydraulic drive on straightening operation, to guarantee on sufficient straightening force;
2) There are four standard models which classifies on the Lengthways Straightening Machine, in terms of the Max. output hydraulic tonnage: HJ300 (300 Ton)/ HJ200 (200 Ton)/ HJ100 (100 Ton) / HJ20 (20 Ton).
4. Working Principle of HJ Series H Beam Lengthways Straightening Machine:
To have illustration on straightening principle of the HJ series machine, please check on the hand made draft and picture as below: (Fig.3,4)
1) The above hand made draft is a vertical view on straightening process of the HJ series Lengthways Straightening Machine;
2) The picture is a lateral view on the mechanical main frame of the HJ models machine;
3) The execution unit on straightening process is Point 3, a pressing unit driven with hydraulic oil cylinder;
4) Point 1 and Point 2 are forced units in the Lengthways Straightening Machine. The distance between the two points 1 and 2 can be adjusted based on size and deflection condition of working parts;
5) With the three points stressed forcefully, this segment of the workpiece is straightened in the Lengthways Straightening Machine;
6) The whole length of the workpiece can be straightened in such way segment by segment. It is not continuous straightening process. So, there is no parameter of “Straightening Speed” in HJ models Lengthways Straightening Machine.
5. Rule of Thumb for Operating on HJ Series H Beam Lengthways Straightening Machine:
As a statement,
1) When Wuxi JACK engineering team developed HJ series Lengthways Straightening Machine years ago, it was designed on the aspect of how much tonnage the machine can deliver, to straighten on H Beam and other workpieces for each model;
2) This is why models of HJ series equipment does not have intuitive information, on applicable H Beam size. Because, in essence, the HJ series Lengthways Straightening Machine is in fact a kind of horizontal press straightening machine;
4) Empirical Data: To help customers find the most applicable model meeting on your requirement, Wuxi JACK have rule of thumb, recommending on general range of H Beam size matching with each model of the HJ series Lengthways Straightening Machine. It is just for reference, to help customer choice on suitable models of the HJ series equipment. For specific condition including steel grade of H Beam, flection of H Beam, etc.… these should be examined further in detail more precisely for each customer;
5) For this empirical data on relationship between output tonnage of HJ series Lengthways Straightening Machine, and suitable size of H Beam, please check next section of HJ300 Hydraulic Lengthways H Beam Straightening Machine.
