HJ-300 Hydraulic Heavy Duty Lengthwise H Beam Straightening Machine

 

A. Usage of HJ300 BOX H Beam Straightening Horizontal Press Machine:

1. Applicable Workpiece: HJ300 is the largest model of HJ series Metal Steel Structure Longitudinal Straightening Machine, for straightening on long structural steel components, typically include: H Beam/ I Beam/ BOX Beam/ steel structural members and other types of Section Steel, along workpiece length direction:

A piece of H Beam with its longitudinal winding, which should be straightening for subsequent use: (Fig.1)

2.  HJ300 Capability: With the biggest output straightening force tonnage of 300 ton, the expected largest thickness of H Beam flange, which can be available for being straightened in HJ300 model is up to 40 mm:

A piece of small H Beam was being straightened along its long body, out of Wuxi JACK HJ300 model machine: (Fig.2)

B. Empirical Data on Relationship between Tonnage and Workpiece Size in HJ Series Metal Steel Structure Lengthwise Straightening Machine:

1. Why This Topic for BOX H Beam Lengthwise Straightening Machine:

1) Different from another more widely applied steel straightening machine: H Beam Flange Straightening Machine, which gives the max. straightening capacity of each model intuitively in the way of equipment nomination, so that customer can have a quick decision on which model is the most fitting,

2) Here in this niche product of machine for workpiece length direction straightening, the model is nominated on the basis of the Max. delivering straightening force, instead of the Max. thickness available for straightening. So, when customer select proper model, a consideration need to be made to determine the best choice on proper model;

3) The reason behind such way of machine model is, this HJ series machine is in essence a kind of BOX H Beam Straightening Horizontal Press, not the conventional way of sole purpose straightening machine. This also explains why, this machine can be used on more than one kind of workpiece, which greatly expands its horizon of application field;

2.  Empirical Data on Operation of BOX H Beam Longitudinal Straightening Machine:

As the only Chinese professional company, which has real technical capability and rich experience to provide this machine for customers, Wuxi JACK has team of senior engineers, who, based on the original development data and years of experience, grasp on technical know how as backbone on machine design, and operating data on operation:

Model	Max. Tonnage of Press (Ton)	Max. H Beam Size that can be Straightened (mm) In HJ series BOX H Beam Straightening Horizontal Press Machine
		Web   Height	Web   Thickness	Flange   Width	Flange   Thickness
HJ20	20	400	10	200	12
HJ100	100	500	12	400	20
HJ200	200	600	30	500	35
HJ300	300	800	32	600	40

Testing on straightening a piece of H Beam, on Wuxi JACK HJ20 model, before its painting and shipment: (Fig.3)

3. Fitting Application of HJ Series BOX H Beam Longitudinal Straightening Machine:

From the above list of specifications, we can have general conclusion that:

1) HJ300 and HJ200 models are for straightening on middle size thickness metal structure workpiece;

2) HJ100 and HJ20 models are for straightening on small size thickness workpiece;

3) For larger size steel structure workpieces, usually deformation along its longitudinal direction is not so obvious, which is not necessary for longitudinal straightening;

4) Besides H Beam, this machine can also be used for straighten on other types of section steels and structural members, so long as its cross section has regular square outline.

C. Specifications of HJ300 BOX H Beam Longitudinal Straightening Machine:

Central straightening acting unit of Wuxi JACK HJ300 model machine: (Fig.4)

Below gives list on major specifications and technical parameters of HJ300:

1. Conveyor motor power of the HJ300: 1.5 kW *2;

2. Hydraulic Driving Cylinder of HJ300 H Beam Straightening Horizontal Press Machine：

1) Cylinder diameter is 400mm;

2) Rod diameter is 320mm;

3) Stroke of the oil cylinder for lateral straightening is 800mm;

3. Hydraulic System of HJ300 BOX H Beam Lengthwise Straightening Machine:

1) Driving motor of the hydraulic system is 22 kW;

2) Rated work pressure of the hydraulic system is 25 MPa;

3) Max. system pressure of the hydraulic system is 32 MPa;

4. Differentiating Factor among Models of H Beam Straightening Horizontal Press Machine:

Front view on Wuxi JACK HJ300 model machine main frame: (Fig.5)

Among the above listed technical data, the variable parameter is power of hydraulic driving motor. For the other models of Wuxi JACK HJ series machine, hydraulic driving motor of each HJ model can be listed as below:

1) HJ200: 11 kW;

2) HJ100: 7.5 kW;

3) HJ20: 3 kW.

5. Some Explanations on Use of HJ Series BOX H Beam Lengthwise Straightening Machine:

1) In design sketch of HJ300, lateral view on the mechanical frame of the machine: (Fig.6)

2) Different Machines for Different Straightening Purpose:

a) The HJ series machine does not have function, which can overlap with HYJ and YTJ series H Beam Straightening Machine, as mentioned previously;

b) The HYJ and YTJ models machines are used for straightening on H Beam flange deformation caused from SAW submerged arc welding:

c) Cross section view on H Beam, for flange straightening: (Fig.7)

3) In practical application,

a) If a piece of just finished SAW welding H Beam has deformation on both its flange and along its lengthwise direction,

b) This H Beam could not to be finished straightening on the two types of deformation, with either one type of straightening equipment;

c) Under such conditions, both the HYJ /YTJ flange straightening machines, and HJ series Longitudinal Straightening Machine should be used;

d) The sequence should be, first longitudinal straightening, then flange straightening.

D. Primary Specifications of Wuxi JACK HJ20 ~ HJ300 Metal Steel Structure BOX H Beam Lengthwise Straightening Machine:

Models	HJ20 ~ HJ300 Welding Steel Structure BOX H Beam Longitudinal Straightening Machine
Max. Straightening Pressure Force	20 ~ 300 Ton (HJ20 ~ HJ300)
Max. Straightening Hydraulic Cylinder Stroke	350 ~ 800 mm (Can be special made) (HJ20 ~ HJ300)
Hydraulic Station Driving Motor	4 ~ 22 kW  (HJ20 ~ HJ300)
Hydraulic Station Rated Working Pressure	12 ~ 25 MPa (HJ20 ~ HJ300)
Input and Output Roller Table length	8000mm * 2
Input and Output Roller Table Driving Motor	1.5 kW *2
Total Weight of H Beam Straightening Machine	3,200 kg ~ 12,000 kg (HJ20 ~ HJ300)
Electricity Power Supply	380V, 50Hz, 3P