1.Introduction for Heavy automatic h beam line:

As a highly automatic H-beam production line, Heavy-duty steel production line sees reducing the use frequency of overhead crane as its subject. Through using automatic machines as roller conveyor, turning machine and conveying machine to conveying, turning and moving H beam during welding process, which greatly improved user’s production efficiency.

The General production process of heavy-duty steel production line as following:

Strip cutting---strip processing (jointing--grooving)---T beam assembling---H-beam assembling--- beam overturn 90°---beam conveying---beam horizontal moving---beam overturn 45°---welded by the first cantilever welding machine at first welding area--- beam re-overturn 45°---beam horizontal moving--beam overturn 45°---welded by the second cabtilever welding machine at first welding area---beam re-overturn 45°---beam horizontal moving--- beam conveying---beam overturn 180°---beam conveying---beam horizontal moving---beam overturn 45°---welded by the first cantilever welding machine at second welding area---beam re-overturn 45°---beam horizontal moving---beam overturn 45°---welded by the second cantilever welding machine at second welding area---beam re-overturn 45°---beam horizontal moving---beam conveying---beam overturn 180°---straightening one flange---beam overturn 180°---straightening another flange---welding stiffened end-plates---beam’s secondary processing(Beam sawing – face milling-- Three-dimensional drilling)---shot blasting---painting

2.Technical parameter for Heavy automatic h beam line

3.Operation process for Heavy automatic h beam line:

1) CNC strip cutting machine to cut webs, flanges, rib plate and end-plate.

2) Joint web and flange plates if the beam length is long.

3) Web beveling if needed, edge milling machine is recommended.

4) Lift one flange down on the input roller conveyor of the assembling machine, and preliminarily centre it by using the draw-bar centering box.

5) Lift one web down on the flange, and preliminarily centering it by draw-bar box.

6) Joint and spot weld the web and flange together into T-shaped by assembling machine and then convey it to the output roller.

7) Lift another flange down on the input roller of the assembling machine, and preliminarily centre it by using the draw-bar centering device.

8) Turning the finished T-beam 180° onto the flange and then preliminarily centre it by using the draw-bar centering box.

9) Joint and spot weld the flange and the T-beam together into H-shaped by assembling machine and then convey it to the output roller.

10) Overturning the H-beam onto the roller conveyor of welding area by 90° overturning machine.

11) Conveying the H-beam to the first welding area by conveying roller.

12) Move the H-beam to the 60° overturning machine beneath the first cantilever welding machine by the convey machine.

13) Turn the 60° overturning machine to 45°, so that the first weld seam is at the boat-type welding position.

14) Weld the first seam by cantilever welding machine.

15) Turn back the 60° overturning machine by 45° to lay the H-beam flat.

16) Move the H-beam to the second 60° overturning machine beneath the second cantilever welder at the first welding area by conveying machine.

17) Turn the 60° overturning machine by 45°, so that the second weld seam is at the boat-type welding position.

18) Weld the second seam by cantilever welding machine.

19) Turn back the 60° overturning machine by 45° to lay the H-beam flat.

20) Move the H-beam to roller conveyor by conveying machine.

21) Convey the H-beam to 180° overturning machine.

22) Turn the 180° overturning machine by 180°.

23) Convey the H-beam to the second welding area.

24) Move the H-beam to the first 60° overturning machine beneath the first cantilever welding machine at the second welding area by conveying machine.

25) Turn the 60° overturning machine by 45°, so that the third weld seam is at the boat-type welding position.

26) Weld this seam by cantilever welding machine.

27) Turn back the 60°overturning machine by 45° to lay the H-beam flat.

28) Move the H-beam to the second 60° overturning machine beneath the second cantilever welding machine at the second welding sarea by conveying machine.

29) Turn the 60° overturning machine by 45°, so that the forth weld seam at the boat-type welding position.

30) Weld the forth seam by cantilever welding machine.

31) Turn back the 60° overturning machine by 45° to lay the H-beam flat.

32) Move the H-beam to the conveying roller by conveying machine.

33) Conveying the H-beam to the next 180° overturning area.

34) Turn the 180° overturning machine by 90°.

35) Conveying the H-beam to straightening machine.

36) Straighten one flange by straightening machine.

37) Conveying the H-beam back to the 180° overturning area.

38) Turn the 180° overturning machine by 180°.

39) Straighten the left flange.

40) Lift the finished steel to rib and end plate welding area.

41) Weld rib and end plates.

42) Process H-beam for the second time (steel sawing - Face milling - 3D drilling).

43) Lift the H-beam to the roller conveyor of a shot blasting machine.

44) Degrease and remove rust and oxide coating of the workpiece.

45) Lift the workpiece to the painting section.

46) Paint