Each process:
Material preparation
1)Before cutting the plate, first adjust the inclination to meet
with required vertical shears.
2)Fix the position of steel plate, assure maximum excess material.
3)The length is decided when laying up the plate. The size of
bottom should not more than ±2mm, but for high mast the tolerance
should be plus, usually: 0 to 2m, for small ending, the tolerance
should be minus, usually -2 to 0mm. When adjust is ready, the
cutting machine will finish cutting.
4) About equipment: check condition of roller shear, clean sundries
on the track, maintain good conditions.
3.Bending:
The work of bending is the most important process, which will
directly influence the quality of pole, and the finished product
cannot be repaired. Pay attention to following tips:
1)before bending: remove residues to keep new plate away from
damage
2)check the length, width and straightness of plate, the
non-straightness should be less than 1/1000, if the
non-straightness meets requirement, correct, especially the polygon
poles must keep non-straightness.
3)adjust the depth of bending with the bending machine, and confirm
the location of plate.
4)Correctly mark line on the plate, the tolerance should be less
than ±1mm.
5)Correctly line up and bend to keep min seam, meanwhile the
distance between two sides should be less than 5mm.
Welding:
Weld the seams of bended plate. As it is semi-auto welding ,the
welder has more work to do, he should adjust the position of
welding and assure straightness of line.
Inspection:
