The invention relates to a special
pipe forming technology for a
log splitter oil cylinder. The technology comprises the steps that 1, uncoiling is carried out, and particularly a
steel belt coil is uncoiled; 2, leveling is carried out, and particularly the uncoiled
steel belt is leveled and conveyed to a next
station; 3, end flattening and
butt welding are carried out, particularly, the head andthe
tail of the leveled
steel belt are sheared and flattened, and the
tail of the sheared and end-flattened steel belt and the head of a next sheared and end-flattened steel belt are welded together;4, prestoring is carried out, and particularly the but-connected steel belts are conveyed into a loop storage bin; 5, forming is carried out, particularly, the steel belts in the loop storage bin areconveyed into a forming
machine, and the steel belts are gradually bent in sequence to form
pipe blanks to be welded; 6, high-frequency
welding is carried out, and particularly high-frequency weldingis carried out after the two butt-connected ends of the
pipe blanks are extruded to the certain opening angle; 7,
water cooling is carried out, the steel pipes welded at a
high frequency are cooled toroom temperature in a spraying mode; 8, special gradient
sizing is carried out, and particularly the water-cooled steel pipes are sized through a
sizing unit; and 9, contour
machining is carried out,and particularly the sized steel pips are
cut to specific lengths.