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Patent Searching and Data


Matches 1,351 - 1,400 out of 2,193

Document Document Title
JPH01284408A
PURPOSE: To reduce a tension acting on a shell and to improve the stripping capability by evaluating stripping capability of a mandrel bar during rolling by a mandrel mill and controlling a tension between the mandrel mill and a sizer ba...  
JPH01159902U  
JPH01271002A
PURPOSE: To form right and left twisted projections, etc., by rolling and to obtain a sufficient tilting angle by making each frame of inlet and outlet side roll chocks a rotating one and rotatively driving each frame independently. CONS...  
JPH01266905A
PURPOSE: To prevent a plug from making direct contact with an alloy steel and to improve the plug service life by joining an ordinary steel on the top of the alloy steel of a stock to be worked and then piercingly rolling the stock. CONS...  
JPH0133854Y2  
JPH0133205Y2  
JPH01143601U  
JPH01241305A
PURPOSE: To prevent generation of bends in a tube by passing a seamless tube into a sizing stage mill in twice, by bringing the top end in a tube polishing stage to be the top end in a 1st passage, and by bringing the rear end in the pol...  
JPH01241304A
PURPOSE: To improve the inside surface quality of a steel tube product by radially injecting high pressurized water from the top of a reeling plug onto the tube inside surface to cool the surface and to remove scales. CONSTITUTION: As fo...  
JPH01237012A
PURPOSE: To improve the dimensional accuracy of a pipe by obtaining the rolling torque of the motor to drive a finished pipe roll rotatively and by controlling the aperture of the finished pipe roll to accord with the torque pattern set ...  
JPH01233001A
PURPOSE: To prevent the generation of a guide shoe flaw and pushing flaw by mixing one or two kinds of Al2O3 and MgO to a specified weight part, SiO2 to specified weight part and a binder, if necessary, for an iron oxide. CONSTITUTION: T...  
JPH01228603A
PURPOSE: To efficiently produce seamless steel tubes of good inside and outside quality by producing a round billet by casting a two-phase stainless steel of a specific composition and then heating the billet at a specific temp. and roll...  
JPH01224113A
PURPOSE: To improve the yield of fitted circular pipe by simultaneously rolling a duplex pipe having a clearance between inner and outer pipes by the pairs of inclined rolls having more than prescribed numbers of rolls satisfying specifi...  
JPH0139076B2  
JPH01205060A
PURPOSE: To manufacture a seamless tube composed of (α+β)-type Ti alloy having superior strength and ductility at a low cost by carrying out final rolling, subsequent heating, and aging treatment after cooling under respectively specif...  
JP01197006A
PURPOSE: To reduce the manufacturing cost by controlling the outlet temperature of a final rolling mill in a specified range of temperature and further, annealing a pipe in a specified range of temperature after the rolling operation in ...  
JP01197005A
PURPOSE: To reduce a manufacturing cost by controlling an outlet temperature of a final sinking mill in a specified range and performing cold working at a specified draft and annealing at a specified temperature in sequence after the rol...  
JPH0137202B2  
JP01181903A
PURPOSE: To obtain plural working functions in a small device by continuously restricting rotation of ring-like tools at both sides by linking the tools to a fixed guide standing on a base with stringy members. CONSTITUTION: Ring-like to...  
JP01181904A
PURPOSE: To contain plural working functions in a small device by supporting inner cylindrical bodies by bearings in the inside of an outer cylindrical bodies and restricting rotation of the inner cylindrical bodies by linking members co...  
JPH01181938A
PURPOSE: To realize the labor saving of rolling and to improve the production efficiency by placing plural small diameter rolls whose shapes are different so as to be replaceable against a hole type roll of a large diameter, selecting th...  
JP01181905A
PURPOSE: To simply prevent generation of inside flaws of a hollow tube stock and to improve the inside quality and yield by specifying a shape of a central hole previously pierced in the top part of a billet and piercing conditions. CONS...  
JPH01180710A
PURPOSE: To obtain the seamless pipe surely guaranteeing the inner face quality of the product blank pipe by estimating the possibility of deteriorating the inner face quality based on the variation in the hot deformability, structure, e...  
JPH01166808A
PURPOSE: To obtain a cylindrical body having high roundness by supporting the short-sized cylindrical body by plural longer cylindrical rolls than the body installed so that the axis of the rolls are parallel to each other and pressing t...  
JP01159321A
PURPOSE: To produce a seamless steel pipe having excellent intergranular corrosion resistance with a simple state by subjecting a stock pipe for rolling to finish rolling at a specific temp., then cooling the pipe under specific conditio...  
JPH01157842A
PURPOSE: To soften effectively shocks and vibrations thereby to reduce the shocking noises and repellency, by providing a foaming sheet made of styrene butadiene rubber r a compound of styrene butadiene rubber and natural rubber in tight...  
JP01157705A
PURPOSE: To miniaturize a body to reduce installation space and to achieve rapid and safety change of guide disks by fixing the guide disks, installing fixed and movable holders and installing a driving shaft to be movable in the axial d...  
JPH0120004Y2  
JP01143707A
PURPOSE: To simplify a stage and to improve the quality by using a mandrel bar for a core member and controlling both corners of a guide shoe and an interval between guide shoes while measuring the height of a spiral mark of a pipe after...  
JPH0128641B2  
JP01127108A
PURPOSE: To improve the biting capability and to restrain generation of internal flaws by shortening a plug lead until a position of the side end part in the transfer direction of a seamless tube in piercing stage reaches the side end pa...  
JPH0123202B2  
JPH0114325Y2  
JPH0114324Y2  
JPH01107909A
PURPOSE: To hold a rolled stock at rolling center and to prevent the generation of a thickness deviation by arranging a liftable turning roller at the outlet side of a rolling mill and adjusting the center position of the rolled stock. C...  
JPH01107910A
PURPOSE: To easily obtain a high fin tube as an integral body and to reduce the manufacturing cost by rolling a metal tube blank with its piercing by inserting a plug into the prepared hole of the metal tube blank on which a small diamet...  
JPH0199707A
PURPOSE: To manufacture tubes having good surface quality, dimensional accuracy, and roundness with good productivity by dividing a rolling stage into three stages of reduction, release, and wall forming for elongation and rolling of tub...  
JPS6454902U  
JPS6454901U  
JPS6487004A
PURPOSE: To manufacture an economic guide shoe having good workability and crack-resistance by making a member sliding on a rolled stock and an other member of different materials as to the guide shoe being used in a diagonal rolling mil...  
JPS6478616A
PURPOSE: To easily and simply manufacture metallic pipe having a spiral groove on the inner surface by arranging and fixing a plug or a mandrel having the spiral groove on a pathline surrounded by a plurality of rolling rolls and hot- ro...  
JPS6475107A
PURPOSE: To prevent the flaw generation and to improve a yield by taking the S contents of a steel in the specified amt., deciding the billet heating temp. at the piercer piercing time according to the S contents of the steel and taking ...  
JPS6466007A
PURPOSE: To prevent the generation of rear end fins by notching the rear end part of a pipe stock to be inserted to a mandrel mill. CONSTITUTION: V-notches 11 corresponding to the circumferential elongation at the rear end in the mandrel...  
JPS6466006A
PURPOSE: To expand the adequate set ranges of a roll gap and plug position to obviate the generation of defects by determining one rolling roll as a reference roll and correcting the spacing of the other rolling roll from a rolling pass ...  
JPS6444204A
PURPOSE: To improve productivity and to manufacture a long-sized pipe by executing a hot rolling under the conditions that the heating temp. of the billet of titanium, the piercing ratio of an inclined piercing machine and the reeling ti...  
JPS6440104A
PURPOSE: To improve the product quality and productivity by rolling a stock with an antiseize agent prepared by mixing boron nitride powders and a binder between guide shows and the rolled stock. CONSTITUTION: Rolling is performed by a d...  
JPS6420901U  
JPS6431504A
PURPOSE: To constrain the generation of a plugging by varying the crossed angle of an inclined roll or the roll opening in the closing direction of the roll outlet side in the case of the bottom part of the material to be worked drawing ...  
JPS6431505A
PURPOSE: To simplify a process and to save a space by specifying the relation of an inclined angle and crossed angle, the diameter of a solid billet and the outer diameter, thickness of a hollow piece and specifying a piercing ratio, pip...  
JPS6431503A
PURPOSE: To execute rolling with low thickness deviation rate by moving in the rolling direction the vibration restraining means holding the outer periphery of the mandrel bar of the vicinity of the tip part and the outer periphery of th...  

Matches 1,351 - 1,400 out of 2,193