Manufacturing method for cold drawn welded pipe used for hydraulic oil cylinders
A hydraulic cylinder and a manufacturing method technology, applied in the field of steel pipe preparation, can solve the problems of low precision of welded pipes, slow production speed, waste of metal materials, etc., and achieve the effects of improving deburring speed, fast processing and forming speed, and reducing processing difficulty
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Embodiment 1
[0034] Embodiment 1: A method for manufacturing a cold-drawn welded pipe for a hydraulic cylinder of the present invention includes the following steps:
[0035] (1) Slitting: Slitting a wide steel coil made of 27SiMn on a slitting machine, and determining the width of the steel coil after slitting according to the diameter of the welded pipe; Among them, there is a certain elongation in the width direction of the steel coil, and the actual width of the steel coil is calculated according to the elongation, and then slitting is carried out according to this width, and the width should be less than 314mm, which varies according to different forming curves;
[0036](2) Roll bending forming: the steel coil after slitting is placed on the display rack, the end of the steel coil is drawn out by the feeding mechanism, and sent to the continuous pressure roll forming mechanism for roll forming processing. The roll forming mechanism includes a plurality of continuous sets of pressure r...
Embodiment 2
[0059] Embodiment 2: A method for manufacturing a cold-drawn welded pipe for a hydraulic cylinder of the present invention comprises the following steps:
[0060] (1) Slitting: Slitting a wide steel coil made of 27SiMn on a slitting machine, and determining the width of the steel coil after slitting according to the diameter of the welded pipe; Among them, there is a certain elongation in the width direction of the steel coil, and the actual width of the steel coil is calculated according to the elongation, and then slitting is carried out according to the width, and the width should be less than 628mm, which varies according to the different forming curves;
[0061] (2) Roll bending forming: the steel coil after slitting is placed on the display rack, the end of the steel coil is drawn out by the feeding mechanism, and sent to the continuous pressure roll forming mechanism for roll forming processing. The roll forming mechanism includes a plurality of continuous sets of press...
Embodiment 3
[0081] Embodiment three: a method for manufacturing a cold-drawn welded pipe for a hydraulic cylinder of the present invention comprises the following steps:
[0082] (1) Slitting: Slitting a wide steel coil made of 27SiMn on a slitting machine, and determining the width of the steel coil after slitting according to the diameter of the welded pipe; Among them, there is a certain elongation in the width direction of the steel coil, and the actual width of the steel coil is calculated according to the elongation rate, and then the slitting is carried out according to the width, and the width should be less than 471mm, which varies according to the different forming curves;
[0083] (2) Roll bending forming: the steel coil after slitting is placed on the display rack, the end of the steel coil is drawn out by the feeding mechanism, and sent to the continuous pressure roll forming mechanism for roll forming processing. The roll forming mechanism includes a plurality of continuous ...
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