Promote forming stand 2 ~ 3: in order to reduce the elastic deformation, production and processing, primary and secondary corresponding ascension. Usually forming deformation processing precision welded pipe generating set the tao time than general welded pipe unit 2 ~ 3 times, thus forming stand to ascend 2 ~ 3 axis.
In order to ensure the generator set cold rolling axis system (vertical axis) each shaft passes - and to do well the basic shaft core, and both sides in the middle of the precise specification and double precision. Generator to have accurate precision positioning standards. Seat in a straight line, the line should be produced in accordance with the provisions of the processing technology into the bed (line) or parallel lines, to ensure that the plot ups and downs can not happen, and therefore regulation shaft seat must be equipped with pressure, pressure equipment, is conducive to adjust. Hot strip steel shell of compressive strength, ductility, wear resistance, surface precision welded tubes smoothness, size precision, high strength and other rules, strength to fit. Welded pipe unit should be equipped with lubricant circulation system equipment, refrigeration and hot-rolled strip steel, in order to reduce the hot rolled strip steel, strip deformation on surface layer stress, avoid surface scratch, lower haircuts.
High stiffness, high toughness, finalize the design with the mouth mould shaft seat: in order to reduce the welded pipe unit in a larger load operation in strong shape change, the total cumulative deviation, each axis elastic deformation quantity is little, to improve the dimension precision of precision welded pipe. Therefore essential to promote sound card frame, flat roller, arrange ushering bearing, diastolic blood pressure, on the strength stiffness and machining precision machinery equipment, etc. When choose in machinery and Cold Drawn Tubes equipment, choose a super-heavy equipped with welded pipe units and supporting facilities.
Steel tube as a new type of road structure, its advantage is obvious, but in the application also exists some problems need to solve. Such as precision steel tube so far haven't or normative terms, design scheme and construction Cold Drawn Steel Tubes technology of precision steel tube corrosion resistance and service life is only a reference overseas related information inference, this kind of problem must be gradually processing in our application in the future. In general, precision steel pipe culvert especially for highway infrastructure construction.