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Patent Searching and Data


Matches 1,751 - 1,800 out of 2,208

Document Document Title
JPS6054208A
PURPOSE: To improve the quality of product by displacing the axial center line of a plug bar by a prescribed quantity from the pass line of a mill to the direction of one side of guide shoes located oppositely to each other and setting t...  
JPS6011566B2  
JPS6044110A  
JPS6034303U  
JPS608882B2  
JPS605946Y2  
JPS605921Y2  
JPS6033807A
PURPOSE: To reduce the degree of wall-thickness deviation of a seamless pipe by specifying the connecting conditions between a plug and a connecting member provided to the tip of a mandrel bar in the manufacture of a seamless pipe by a M...  
JPS606722B2  
JPS6024203A
PURPOSE: To obtain a titled disk capable of preventing the flaw generating in the outer surface of a product pipe and improving operating efficiency by forming a nonmetallic film on the surface of a disk used for manufacturing a pipe for...  
JPS6021111A
PURPOSE: To produce a seamless steel pipe having high quality with high efficiency by performing piercing while supplying a liquid paint mixture composed of metallic oxide powder and granules and a binder to the circumferential surface o...  
JPS609504A
PURPOSE: To prevent the generation of seizing defect, etc. in the pipe surface by providing balls to the space between the slidingly contacting surfaces of disks and an opposing material, in disher disks used for pipe manufacturing toget...  
JPS606208A
PURPOSE: To prevent generation of the flaw caused by the scale on the inside surface of a steel pipe in a rolling method of a hollow blank pipe by a roll piercing method by feeding fluid through the inside of a mandrel supporting a plug ...  
JPS606216A
PURPOSE: To improve the resistance of a guide shoe to seizure and to improve the durability and productivity thereof by providing a recess of a specific depth on the guiding surface of the guide shoe and spraying thermally and depositing...  
JPS603905A  
JPS5952002B2  
JPS59223110A  
JPS59212106A
PURPOSE: To prevent the generation of outer surface flaws of a finished pipe by gradually reducing the outer diameter, at the outlet side of the end part to be rolled of a blank pipe, in a circular arcuate shape along the axial direction...  
JPS59175423U  
JPS59175422U  
JPS59206105A
PURPOSE: To prevent the generation of an eccentric wall-thickness deviation and to obtain a high-quality seamless pipe by connecting swingably a plug to a mandrel bar and aligning the axial center line of the plug with that of a material...  
JPS5947605B2  
JPS59197305A
PURPOSE: To manufacture easily a hollow bar material excellent in dimensional accuracy without using a mandrel by elongation-rolling a hollow blank material by a skew rolling mill equipped with plural cone-type rolls forming specific int...  
JPS5944928B2  
JPS5944927B2  
JPS5944124B2  
JPS5944123B2  
JPS59182920A  
JPS5937281Y2  
JPS59153003U  
JPS59178109A  
JPS59148102U  
JPS59174203A
PURPOSE: To reduce remarkably the generation of specks such as pits or eruption by forming a center hole which satisfies a prescribed condition at the center of the rear-end surface of a billet before piercing, in a Mannesmann pipe manuf...  
JPS59169607A
PURPOSE: To provide a titled piercer capable of efficiently mending and exchanging disks without moving work rolls vertically by horizontally turning the guide disks used for supporting a material between upper and lower rolls around the...  
JPS59166307A  
JPS5937687B2  
JPS59159218A
PURPOSE: To grasp accurately a condition of the wall thickness deviation of a pipe and the causes of its generation by continuously measuring a vibrating condition in the longitudinal direction of a blank pipe in rolling and monitoring t...  
JPS59153506A
PURPOSE: To improve the seizure-and-peel-resistant properties of a guide shoe and to extend its service life by using a guide shoe, for manufacturing a seamless pipe, having the surface provided with an undercut part on which ceramics ar...  
JPS5935682B2  
JPS59150613A
PURPOSE: To improve the quality of a round billet to be rolled by providing a tension detector to a holding device of a mandrel bar and making the gap between barrl-type rolls changeable in accordnace with the vairation of the tension of...  
JPS59144384A  
JPS59141307A
PURPOSE: To remove easily the seizure of caliber end and to prevent edge mark by pressing a grinding wheel,having circular-arcuate surface corresponding to a groove of semicircular caliber-end of a finishing mill, against said caliber en...  
JPS59114212U  
JPS59133930A
PURPOSE: To reduce considerably the sectional area of a pipe by pressure with a relatively small-sized installation by making small the contact area of ring roll calibers and the pipe to deform locally the pipe and making the pipe deform...  
JPS59133929A
PURPOSE: To decrease uniformly the sectional area of a long columnar body by supporting said body with supporting devices adjacent to an eccentric ring roll, pressing the caliber surface of the eccentric ring roll to the surface of the l...  
JPS59131196A  
JPS5930489B2  
JPS5927642B2  
JPS59118206A
PURPOSE: To detect easily the generation of thickness deviation due to the off- center of a plug by detecting a thrust load acting on the rolling plug of mill during rolling, and judging the generating condition of the thickness deviatio...  
JPS59113908A  

Matches 1,751 - 1,800 out of 2,208