A. What Can BOX H Beam Longitudinal Straightening Machine do for Customers:

1. Problem Solved with BOX I H Beam Straightening Machine:

a) At the completion of welding BOX/ I / H Beam production, there are 2 major types of deformation happened on these workpieces;
b) These deformations are caused from SAW/ GMAW welding heat input, and should be corrected with corresponding structures of I H Beam Straightening Machine, so that workpieces BOX/ I / H Beams can be eligible for next step processing:

1) I H Beam Flange Up Bend: This should be straightened with Flange I H Beam Straightening Machine: (Fig.1)

2) BOX H Horizontal Direction Deflection: This should be straightened with HJ series BOX H Beam Horizontal Press Straightening Machine: (Fig.2)

The length direction winding welding H Beam that will be corrected with BOX H Beam Longitudinal Straightening Machine: (Fig.3)

2. All Workpieces Applicable for BOX H Beam Longitudinal Straightening Machine:

1) Besides H Beam, this pressing form I H Beam Straightening Machine can be used for straightening all kinds of structure members with square or rectangular cross section;
2) The typical ones include: Section Steel/ BOX Beam/ Cross Beam, etc.;
3) In All, BOX H Beam Longitudinal Straightening Machine is a kind of very important Steel Structure Straightening Machine, applied extensively in Steel Structure Industry.

B. Working Way and Advantages of Wuxi JACK HJ Series BOX H Beam Horizontal Press Straightening Machine:

1. Operation Manner of the BOX H Beam Longitudinal Straightening Machine:

1) During work, workpiece is laid on straightening pressing unit of the BOX H Beam Longitudinal Straightening Machine, its longitudinal direction deformation will be got straightened segment by segment along whole length;
2) Such straightening action is performed under the drive of hydraulic oil cylinder;

2. A piece of H Beam being straightened in Wuxi JACK HJ100 BOX H Beam Longitudinal Straightening Machine: (Fig.4)

3. Strong Points of Wuxi JACK HJ Series BOX H Beam Longitudinal Straightening Machine:

1) Heavy and reliable straightening force;
2) Precise and manageable straightening stroke control;
3) Safe and easy operation;
4) High productivity;
4. Summary on general advantages of this machine is demonstrated in Slides page “Review on Wuxi JACK I H Beam Straightening Machine”.

The Lefthand Scrolling Photos: Functions units of Wuxi JACK BOX H Beam Horizontal Press Straightening Machine

General Steps of Design and Manufacture on HJ Series BOX H Beam Horizontal Press Straightening Machine:

1. Calculation on Max. pressing tonnage necessary for straightening designated specification of workpiece: The standard Max. output pressing force in standard models of the BOX H Beam Longitudinal Straightening Machine is from 20 Ton to 300 Ton;
2. Make general layout of steel structure BOX H Beam Horizontal Press Straightening Machine, based on customer facility surroundings;
3. Make process route for producing and validating BOX H Beam Longitudinal Straightening Machine;
4. Have machining on core acting elements, including pressing head/ Oil cylinder and its guiding bush/ Ejectors/ Main beds/ Pressing beam, etc.;
5. Make sub assembly and final assembly on all the above main units of the BOX H Beam Longitudinal Straightening Machine, control it within stipulated tolerance.

1. Specification Reference on BOX H Beam Longitudinal Straightening Machine:

1) Different from Flange I H Beam Straightening Machine, which gives direct indication on available material and thickness of H Beam for straightening;

2) In HJ series BOX H Beam Longitudinal Straightening Machine, model and related specification are mainly on the basis of max. delivered straightening tonnage;

2. Empirical Data on Model Selection of BOX H Beam Horizontal Press Straightening Machine:

Below is rule of thumb on applicable specifications of H Beam that corresponds with every standard model of the HJ Series BOX H Beam Longitudinal Straightening Machine: 

The 1^st handwriting sketch gives illustration on how does the HJ series BOX H Beam Longitudinal Straightening Machine straighten a piece of H Beam along its longitudinal way:

You can check it together with the 2^nd to 4^th physical photos of the machine main frame:

1. General Steps: The workpiece is straightened in BOX H Beam Longitudinal Straightening Machine segment by segment, each segment has adjustable length of 1500 mm to 2000 mm;
2. For straightening current segment, the H Beam is pressed against pressing beam of the BOX H Beam Horizontal Press Straightening Machine, with Point 1 and Point 2 (Please check the 1^st sketch and 2^nd photo) as touching points;
3. The other side of the H Beam is pressed on Point 3 (As indicated in the 1^st sketch and 2^nd / 3^rd photos) by means of a piece of pressing head, which is driven with a piece of oil cylinder guided with bushing;
4. In other words, during operation of the BOX H Beam Longitudinal Straightening Machine, point 1 and point 2 are fixed points for holding H Beam, and point 3 is for acting and applying straightening force within the stroke of 700 mm;
5. Straightening Theory: In this respect, we can say that BOX H Beam Longitudinal Straightening Machine works in the theory of "Three Points Subjected to Force";
6. Workpiece Release: The 2 pieces of ejectors with 1335 mm distance apart (The 2^nd photo, point 4 and 5) are for pushing the workpiece away every time at the completion of straightening, going thru the BOX H Beam Horizontal Press Straightening Machine;
7. Workpiece Sending Way: Upon completion of current segment straightening, the H Beam can be pushed forward by hand, and begin on next segment of straightening. This is the reason that, in HJ series BOX H Beam Longitudinal Straightening Machine, both input and output conveyors are idle type, without motor drive.

1. Layout of HJ Series BOX H Beam Longitudinal Straightening Machine:
 

Below is on site arrangement of Wuxi JACK HJ300 (Max. 300 Ton straightening force) BOX H Beam Longitudinal Straightening Machine.

We can see that:
1) Total length of the HJ300 H Beam Straightening Machine is slight longer than 22m;
2) The suggested width for machine land occupation is 7m;
3) Height of input and output conveyors top surface is 720 mm;
4) Hydraulic station and control board of the HJ300 BOX H Beam Horizontal Press Straightening Machine should be put alongside its main body, or working table;
5) Height of straightening unit in the HJ300 BOX H Beam Longitudinal Straightening Machine is around 1400 mm, applicable for height of adult operator, good for ergonomics standard.

1. The standard models of the HJ series H Beam Horizontal Press Straightening Machine are HJ20, and HJ100, and HJ200, and HJ300, which are distinguished on the basis of max. generated pressing force for straightening;

2. Below are technical specifications of Wuxi JACK HJ Series Steel Structure BOX H Beam Horizontal Press Straightening Machine: