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Patent Searching and Data


Matches 1,451 - 1,500 out of 2,210

Document Document Title
JPS63248503A
PURPOSE: To prevent generation of product flaws by setting the outlet side roll face angle of main rolls to be larger than a specific angle, forming a small projection on the top of a plug, and setting a side peripheral face taper angle ...  
JPS63242405A
PURPOSE: To improve the correction effect for wall thickness deviation of a metal tube by installing a plug positioner at a prescribed position in the rolling direction and rolling a stock for a prescribed period after a rolling start wi...  
JPS6338006Y2  
JPS63238907A
PURPOSE: To obtain seamless tubes without inner surface flaws by rolling the rear end part of a rolled stock so that a thickness of the rear end part is thicker than that of other parts and adjusting an opening between slant rolls and an...  
JPS63238909A
PURPOSE: To prevent generation of inner surface flaws in thin wall piercing rolling by maintaining a slant and a crossing angles of double-support cone-type rolls oppositely installed each other in respective sides of the pass line in sp...  
JPS63238908A
PURPOSE: To prevent generation of flares and to obtain good quality hollow tube stocks by setting all of an opening between slant rolls, a gap between both guide shoes, and an advancing amount of a plug to meet related requirements under...  
JPS63230205A
PURPOSE: To prevent the development of crack at end part of starting side of piercing and to produce a free-cutting steel-made steel pipe at good yield by specifying the outer diameter at the end part of starting side for piercing to the...  
JPS63145502U  
JPS63220907A
PURPOSE: To prevent the generation of a hole and to improve quality by increasing the advancing amt. of a plug by moving it the reverse direction to the progressing direction of a rolling blank stock at the initial piercing time of the r...  
JPS63220909A
PURPOSE: To prevent thickness deviation and streak and to improve quality by elongating a rolled hollow stock with the roll roll-fitted to the outer periphery of a rolled stock with supporting a plug by its tip side and base end side. CO...  
JPS63220908A
PURPOSE: To prevent the biting of a scale between a plug and blank pipe and to improve the quality by rolling with extension the roll and plug having the outer peripheral face part in parallel to a pass line with moving in the same direc...  
JPS63212006A
PURPOSE: To arrange short fibers in the peripheral direction of a tube and to reduce thermal expansion in the radial direction by performing ring rolling work after forming an FRM billet of a thick wall tubular shape by pressure casting....  
JPS63133802U  
JPS6343162B2  
JPS6343161B2  
JPS63203205A
PURPOSE: To improve a plug life and to efficiently obtain a stock pipe having good inside surface quality and dimensional accuracy by joining a tip part consisting of an Mo-base alloy to a plug body part consisting of an alloy having spe...  
JPS63127701U  
JPS63502121A  
JPS6341649B2  
JPS63188406A  
JPS63188405A  
JPS63188411A
PURPOSE: To perform quick opening of a gap between main rolls without increasing the capacity of a driving system by making a drafting nut movable in only the axial direction of a screw shaft and making the nut movable in the reverse dir...  
JPS63183707A
PURPOSE: To form high quality tubes having no thickness deviation by maintaining respective specific relations of a skew roll outlet face angle, an angle of a plug reeling part, and a guide shoe outlet face angle to the path center of a ...  
JPS6327845Y2  
JPS63177906A
PURPOSE: To permit diametral reduction of a pipe with high accuracy by arranging plural pieces of tapered rollers to the tapered inner peripheral face of a rotary die and rotating the die so that the rollers make planatary motion around ...  
JPS63111201U  
JPS63111203U  
JPS63111202U  
JPS63111204U  
JPS63111205U  
JPS6335322B2  
JPS63106504U  
JPS63106501U  
JPS63106503U  
JPS63106502U  
JPS63157705A
PURPOSE: To prevent generation of defects on the inside surface of a stock pipe after piercing by inserting a plug into the solid billet in the direction not against the V-segregation zone therein and piercing and rolling the solid bille...  
JPS63154206A
PURPOSE: To make the operation effective by rotating a couple of skew rolls in the normal and the reverse directions and putting pluge supporting by respective plug supporting means installed at both sides of the roll into a rolling regi...  
JPS63149004A
PURPOSE: To expand the possible manufacturing range by piercing a billet by a mannesman piercer and performing plural tube stock drawing for a tube stock by a prescribed outer dia. draft and by changing a drafting direction by use of a c...  
JPS6390503U  
JPS63134630A
PURPOSE: To manufacture a high quality seamless steel tube at a low cost by heating a martensitic high Cr steel billet under specified conditions, regulating the temp. of the billet to a prescribed piercing temp. and piercing the billet ...  
JPS6385302U  
JPS63130207A
PURPOSE: To maximize the rolling efficiency and to improve the productivity and service life of a plug by controlling a driving force given to a drive roller shoe of an inclined rolling mill so as to maximize a reaction of a rolling roll...  
JPS63115606A
PURPOSE: To prevent the generation of the inner part defect of a high alloy steel product and to extend the service life of a plug by filling up a lubricant in a hollow part and piercing after heating the closed hollow billet for Mannesm...  
JPS63112009A
PURPOSE: To improve the product quality and yield by turnably holding a mandrel roll against a lower platen and making the mandrel roll vertically mountable and demountable against an upper platen. CONSTITUTION: A lower bearing part 21 t...  
JPS63112008A
PURPOSE: To improve the productivity and to prevent damage to members by forming an open notch into which a king roll is accessible at the upper end of a frame and inserting a rotating shaft into the king roll through the notch. CONSTITU...  
JPS63112007A
PURPOSE: To improve the shape and size accuracy of a rolled stock pipe by forming a roller shoe to a larger diameter from the terminal of the roller shoe where there is no more contact of the rolled stock pipe and plug toward an outlet s...  
JPS6371901U  
JPS6390306A
PURPOSE: To stably guide a tube stock being in rolling by installing a disk guide shoe in roughly parallel to the outlet side face angle of a main roll and setting a gap between the disk guide shoe and the main roll to about zero. CONSTI...  
JPS6313847Y2  
JPS6356901U  

Matches 1,451 - 1,500 out of 2,210