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Patent Searching and Data


Matches 1,551 - 1,600 out of 2,200

Document Document Title
JPS627244B2  
JPS6234609A
PURPOSE: To suppress the wear of guide shoes and to prevent the formation of flaws on the surface of a pipe stock for a seamless steel pipe to be formed by supplying a liquid lubricating agent to the specific part between a round billet ...  
JPS6224805A
PURPOSE: To prevent the increase of electric power for driving rolling rolls during piercing of the rear end of a round billet by heating the rolling rear end of the round billet and piercing the same in the stage of piercing the round b...  
JPS6215803U  
JPS6215816U  
JPS6216809A
PURPOSE: To improve the quality and the yield by controlling a rolling condition of a sizing machine based on the pipe outside diameter at the same position in the axial length direction, before and after straightening a metallic pipe, a...  
JPS6216807A  
JPS626901U  
JPS626706A
PURPOSE: To exert tensile stress to a rolling material and to control the bulging in the direction perpendicular to the axis thereof by exerting spiral movement and tensile force to a chuck part for chucking the front end of the rolling ...  
JPS61293602A
PURPOSE: To increase the number of pipes to be rolled by a guide shoe tool for rolling by partly decreasing the thickness in the sliding part of the guide shoe tool and oscillating said part thereby decreasing the friction of the sliding...  
JPS6160721B2  
JPS6158267B2  
JPS61182601U  
JPS61253102A
PURPOSE: To improve the accuracy of a diametral size by setting the length in the reeling part of each cone type roll of a cross helical rolling mill by a mathematical expression thereby executing rolling while bringing each part of the ...  
JPS61249640A  
JPS61245906A
PURPOSE: To improve the quality of a seamless steel pipe by setting small the inclination angle of cross helical rolls in the stage of rolling at the prescribed time at the top and bottom of a material to be rolled thereby improving roll...  
JPS61162313U  
JPS61209706A
PURPOSE: To improve the quality of a product and the durability of a shoe by slantly arranging a drive roll shoe at a fixed advancing angle and controlling its rotational speed synchronously with that of a stock to be rolled. CONSTITUTIO...  
JPS61209707A
PURPOSE: To improve the productivity of a titled mill by controlling operation by increasing a piercing speed through the increase of the work of a drive roll shoe when the actual piercing speed of a stock to be rolled remains less than ...  
JPS61202721A
PURPOSE: To manufacture a clad pipe having a well adhered mating surface of inner and outer pipes by extracting air in the clearance between inner and outer piper stocks through a groove formed in the peripheral direction between both pi...  
JPS61202706A
PURPOSE: To exchange rapidly and easily roll shoes and to stabilize the supporting state of the roll shoe by connecting a shoe base, used for rotatably supporting the roll shoe, to a slide block capably of engaging and disengaging them w...  
JPS61202720A
PURPOSE: To secure sealing ability in hot working, by shrinkage fitting together outer and inner pipe stocks, having different linear thermal coefficients of expansion respectively, to seal their top parts by welding, and projecting the ...  
JPS61199504A
PURPOSE: To prevent an invasion of air to a fitting part by a simple technique and to improve the productivity of the titled pipe, by providing a glass material to a groove formed at the lapping part of both ends of inner and outer pipe-...  
JPS6139126B2  
JPS6139127B2  
JPS61139405U  
JPS61182810A
PURPOSE: To improve the quality of products and to stabilize its manufacture by arranging rolling rolls slantly with respect to a pass line and providing a speed difference between the rotational speeds of respective rolls. CONSTITUTION:...  
JPS61180603A
PURPOSE: To obtain a pipe stock, thick-walled and excellent in inner-surface properties, by limiting the amount of roll opening and piercing a billet by a Mannesmann piercer, in piercing stage. CONSTITUTION: The effect of roll forging is...  
JPS61176414A
PURPOSE: To decrease the deviation amount of a rolling plug from a mill center and its speed ratio to a rolling roll, by controlling the rotational speed of plug so as to relate it specifically to that of a rolling roll during the rollin...  
JPS61169103A
PURPOSE: To obtain a seamless steel pipe excellent in surface properties by manufacturing the pipe under the optimum conditions by using the relations between the previously obtained reeler rolling conditions and the dimensions and surfa...  
JPS6132081B2  
JPS6132082B2  
JPS61162217A
PURPOSE: To enable the rolling of a larger sized material and high alloy material with increasing the rolling capacity by eliminating the peak electric power to generate at the piercing completing time of a squeeze rolling by subjecting ...  
JPS61144204A
PURPOSE: To restrain the bulging of a stock by providing a forward tension thereto, by providing a roll parts to a rolling roll from its inlet side to outlet side and making the maximum diam. of the 3rd roll-part larger than the roll dia...  
JPS61144218A
PURPOSE: To manufacture easily and inexpensively an intermediate corrosion- resistant and triple-ply clad steel pipe, by wrapping a stainless steel of specific components or a nickel-base alloy around a easy-to-work carbon steel by casti...  
JPS61144205A
PURPOSE: To promote the elongation of a pipe stock by restraining the increase of its expanding rate, and to improve the operability of rolling and the quality of product, by using the small-diam. front end of a plug as a guiding part ha...  
JPS61144206A
PURPOSE: To support a pipe stock stably, and to roll it smoothly into an excellent shape, by setting the taper angles at the inlet and outlet sides of a roll shoe, the lengths of the inlet and outlet sides of roll shoe and the distance b...  
JPS61144207A
PURPOSE: To roll smoothly a pipe stock while preventing its squeezing-out phenomenon by setting the starting position of the thickness-reduction of pipe stock, performed by rolling rolls and a plug, from the gorge part of rolling roll to...  
JPS61140308A
PURPOSE: To roll smoothly a pipe stock by rolling the pipe stock under the previously set reduction rate of wall-thickness, free from generating a flare at the rear end of pipe stock, in elongating a hollow pipe stock into a seamless pip...  
JPS61140301A
PURPOSE: To apply advantageously a continuously cast stock to the pipe forming of skew rolling system by forming the continuously cast slab of low C, N stain less steel, formed into the rectangular cross section of prescribed dimensions,...  
JPS61140309A
PURPOSE: To improve the manufacturing speed of a titled tube as well as to maintain the accuracy of groove dimensions and the smoothness of tube outer surface, by using specific rolling rolls, in a device of manufacturing a tube having g...  
JPS61137612A
PURPOSE: To prevent the wall-thickness deviation of a metallic pipe by rolling again a part, rolled by a roll of one side and a reeling part of plug, by a roll of the other side and the reeling part of plug, in piercing the pipe by skew ...  
JPS6127121B2  
JPS61119310A
PURPOSE: To improve mill rigidity and working speed by disposing plural pieces of geared rolls to the internal gars of cylindrical rotating housings and supporting ≥1 points of the body parts, shoulder parts, shaft parts or gear parts ...  
JPS6182703U  
JPS6182704U  
JPS6121297B2  
JPS6116885Y2  
JPS6120365B2  
JPS6199503A  

Matches 1,551 - 1,600 out of 2,200