Workpiece Standing Type HYJ& YTJ Series H Beam Flange Straightening Machine

1.  Common Points of HYJ and YTJ series Automatic H Beam Straightening Machine:

As sump up, this is product category covering all the previous introduced models of machine. These products have common grounds of:

1) Purpose of the H Beam Straightening Equipment:

As final step of H Beam Production Machine, to straighten H Beam flange deformation after H Beam Submerged Arc Welding Machine;

2) H Beam Orientation in H Beam Straightening Machine:

H Beam flange is in the direction of “Vertical Standing”: (Fig.1)

3) The 3 pieces of straightening rollers in straightening unit: (Fig.2)

Shown in the above photo, automatic I Beam Straightening Machine (Same meaning as for H Beam) straighten the flange by means of the T shape cavity, which is formed by the two pieces of top straightening rollers, and one piece of bottom straightening roller.

2. Variations in Technical Aspects of HYJ&YTJ series Automatic I Beam Flange Straightening Machine:

To achieve this target of flange straightening on various thickness and material (Q235, Q345, 16Mn, etc.) of welding H Beam, there are several variations in the machine, in terms of:

1) Straightening Rollers Movement and Driving style: (Fig.3)

a) Whether it is top or bottom straightening rollers to perform the job;

b) Whether it is driven with mechanical motor reducer or hydraulic station;

2) Top Straightening Rollers Span Manipulation (To cater for changed flange width) and web tighten unit in H Beam Straightening Machine: (Fig.4,5)

As introduced in previous products, for these important units affecting straightening outcome,  whether it is made with manual handwheels thru leadscrew, or hydraulic oil cylinder;

3) Power of Main Motor and Hydraulic Oil Pump, and hence its Pressure and Output Torque in H Beam Straightening Machine:  

These are determined by specific workpiece size and flange thickness;

4) Execution unit:

a) Straightening rollers have varied size (diameter) based on web height and thickness: (Fig.6) 

b) Which means, in general, straightening rollers of hydraulic drive H I Beam Flange Straightening Machine are larger than those of mechanical motor drive models;

c) For HYJ series motor drive models, straightening rollers of HYJ-800 are larger than those of HYJ-40;

d) This is also true with hydraulic drive models machine, that descending sequence in terms of straightening roller size is YTJ80/60/50/40;

5) Consumables in H Beam Straightening Equipment:

a) Unlike other H Beam Production Machine such as H Beam Welding Machine, straightening process do not need consumables for its daily operation;

b) The working parts with maximum wear are top and bottom straightening rollers. They are forged integrally, of material 35CrMo, and hardness HRC50-55, guaranteeing long life service without defects such as cracking. These straightening rollers have same service life as the I Beam Straightening Machine itself;

6) Straightening Speed in H Beam Straightening Machine:

The HYJ series motor drive models and YTJ series hydraulic drive have different straightening speed as below:

        i.  HYJ-800 mechanical:                   17m/min.;

       ii.  HYJ-40 mechanical, YTJ-40/50 hydraulic:  9m/min.;

      iii.  YTJ-60/80 hydraulic:                    6.3m/min.

b) In the process technology of H Beam Production Machine, H Beam Straightening Machine has the quickest processing speed, compared with the former steps of H Beam Assembly Machine and H Beam Submerged Arc Welding Machine, which assembles and welds H Beam in the working speed of around 200~ 2000 mm/min.;

c) Proper Models of H Beam Straightening Machine for Line:

In this sense, HYJ-40 motor drive model is more applicable for being applied in automatic H Beam production line:

i.  Usually for an automatic H Beam Product Line, submerged arc welding is bottleneck, with welding speed of average 2000 mm/min.;

ii.  With four sets of LHC column type H Beam SAW machine in a line, the SAW welding matches with 9m/min. straightening speed of HYJ-40 Automatic H Beam Straightening Machine better than 17m/min. of HYJ-800 Automatic H Beam Straightening Machine;

iii. In automatic line, operator of the HYJ-800 needs to wait for delivery of SAW process, which deteriorates Line Balance Rate of whole H Beam Production Line.

3. Technical Parameters of HYJ& YTJ Series Automatic H Beam Straightening Machine:

Below are specifications of product family of motor drive and hydraulic drive HYJ&YTJ series: