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Application filed by Kusakabe Electric & Machinery Co LtdfiledCriticalKusakabe Electric & Machinery Co Ltd
Priority to MYPI20055976priorityCriticalpatent/MY143921A/en
Publication of MY143921ApublicationCriticalpatent/MY143921A/en
Shaping Of Tube Ends By Bending Or Straightening
(AREA)
Abstract
APPARATUS FOR REDUCING THE DIAMETER, ROUNDING OR STRAIGHTENING OF PIPE OR TUBING (7) BY ROLLING COMPRISING A PLURALITY OF CLOSELY AND EQUALLYSPACED, LONG, NARROW, PARALLEL-CYLINDRICAL ROLLERS (3) ARRANGED IN A PARALIEL-CYLIDDRICAL ARRAY THROUGH WHICH SAID PIPE OR TUBING (7) IS PASSED AT A CONSTANT LINEAR SPEED, SAID ROLLERS (3) BEING SKEWED TO DISPLACE THEIR CENTRAL CONTACT ZONES RADIALLY INWARDS BRINGING THEM INTO FORCEFUL CONTACT WITH THE EXTEMAL SURFACE OF SAID PIPE OR TUBING (7), AND BEING ROTATED TO CAUSE SAID CENTRAL CONTACT ZONES TO DESCRIBE CONTINUOUS, PARALLEL, OVERLAPPING, HELICAL PATHS ALONG THE EXTERNAL SURFACE OF SAID PIPE OR TUBING AND THEREBY TO PROGRESSIVELY APPLY LOCALLY TO THE WHOLE OF THE EXTEMAL SURFACE OF SAID PIPE OR TUBING (7) A COMPRESSIVE FORCE IN EXCESS OF THE YIELD STRENGTH OF ITS MATERIAL, CAUSING SAID PIPE OR TUBING (7) TO ADOPT A SET AT A SMALLER DIAMETER.
MYPI200559762005-12-192005-12-19Apparatus for rectifying round pipe and tubing
MY143921A
(en)
Method and device for incrementally shaping profiled pipes, in particular profiled pipes having cross-sections that vary over the longitudinal axis and profiled pipe of this type
Process and device to grind the perimeter of a tubing bowl made of mineral wool by means of a grinding roll has adjustable drive rollers and receiving lugs to vary thickness and diameter of tubing bowl
Mandrel bar for rolling of high alloy, method for surface treatment of the mandrel bar, method for manufacture of the mandrel bar, and method for operation of seamless steel pipe production apparatus