Tube wall ultra-thin steel pipe cold drawing machine
A technology of cold drawing machine and steel pipe, applied in the field of cold drawing machine, can solve problems such as pipe cracks and pipe fractures, and achieve the effect of good surface finish and good equipment stability.
Active Publication Date: 2020-01-14
HANGZHOU DIANZI UNIV
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Problems solved by technology
[0002] Existing cold drawing machines are generally only capable of cold drawing stainless steel pipes with a wall thickness of more than 2mm. If it is used to cold draw stainless steel pipes with a wall thickness of about 0.5mm, there will be pipe breakage or pipe cracks. At present There is no cold drawing machine on the market that can produce stainless steel pipes with a wall thickness of 0.5 to 1mm
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[0017] Example: see Figures 1 to 6 As shown, the pipe wall ultra-thin steel pipe cold drawing machine includes a cold drawing trolley 1, a walking wheel 2 is installed on the cold drawing trolley 1, a walking track 31 is arranged on the cold drawing support 3, and the walking wheel 2 moves linearly along the walking track 31, The cold-drawing chain 4 is installed on the cold-drawing bracket 3, the draw hook 5 is hinged on the cold-drawing trolley 1, one end of the tension spring 6 is fixed on the cold-drawing trolley 1, and the other end is fixed on the draw hook 5, and the cylinder 7 is fixed on the cold-drawing trolley 1 Above, the piston rod of the cylinder 7 is hinged on the drag hook 5, and the pneumatic clamp 8 is fixed on the cold drawing trolley 1; the cold drawing chain 4 is composed of a chain 41 and a cross bar 42, and the two ends of the cross bar 42 are pivotally connected to two On the chain 41, the drag hook 5 is matched with the cross bar 42;
[0018] An oil ...
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The invention discloses an ultrathin-wall steel pipe cold drawing machine. Walking wheels linearly move along walking rails; a cold drawing chain is mounted on a cold drawing bracket; a pull hook is hinged to a cold drawing car; one end of a tension spring is fixed on the cold drawing car, and the other end is fixed on the pull hook; a cylinder is fixed on the cold drawing car; a piston rod of thecylinder is hinged to the pull hook; a pneumatic fixture is fixed on the cold drawing car; the cold drawing chain consists of chains and a cross bar; two ends of the cross bar are pivoted to two chains; the pull hook is matched with the cross bar; the cold drawing mold is a block body provided with a mold center hole; a horn-shaped opening is formed in the mold center hole; a roller is a cylindrical solid with a cone frustum at the front end; and the roller is aligned to the mold center hole. The machine can produce stainless steel pipes with outer diameters of 3-5 mm and wall thicknesses of0.5-1 mm, is excellent in equipment stability, and can realize continuous production; and the produced stainless steel pipes are excellent in surface smoothness and free of rupture or crack phenomenon.
Description
Technical field: [0001] The invention relates to the technical field of cold-drawing equipment for steel pipes, in particular to a cold-drawing machine for ultra-thin steel pipes. Background technique: [0002] Existing cold drawing machines are generally only capable of cold drawing stainless steel tubes with a wall thickness of more than 2 mm. If it is used to cold draw stainless steel tubes with a wall thickness of about 0.5 mm, the phenomenon of tube breakage or tube cracks will occur. At present There is no cold drawing machine on the market that can produce stainless steel tubes with a wall thickness of 0.5 to 1 mm. This is mainly because when the steel pipe is cold drawn, a large amount of heat will be generated at the contact between the steel pipe and the cold drawing die, so that the contact between the steel pipe and the cold drawing die is prone to breakage or pipe cracks. Invention content: [0003] The purpose of the present invention is to provide a cold dr...
Claims
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IPC IPC(8): B21C1/22B21C9/00
CPCB21C1/22B21C9/00
Inventor 周继军
Owner HANGZHOU DIANZI UNIV