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Patent Searching and Data


Matches 1,201 - 1,250 out of 2,179

Document Document Title
JPH03258406A
PURPOSE: To manufacture a seamless tube of two-phase stainless steel excellent in the quality of the outer surface of tube by using a round billet of stainless steel on which an aluminum film with a specified thickness is formed and manu...  
JPH03248714A
PURPOSE: To obtain the clad pipe without stripping or other joining defects by executing diffusion joining after fitting the hollow billet, and then, skew rolling. CONSTITUTION: On the case of the diffusion joining to be executed after i...  
JPH03243212A
PURPOSE: To provide the products without the structural defect and to enlarge the range of possibility of manufacture by fitting the high alloy hollow billet in the hollow billet of carbon steel, etc., and then, seal-welding the boundary...  
JPH03240921A
PURPOSE: To produce a seamless steel tube having superfine structure by applying piercing rolling to a solid round billet at specific piercing ratio while elevating the temp. of this round billet to a temp. in a specific region and tempo...  
JPH03234306A
PURPOSE: To eliminate the limitation of length in tube manufacturing by holding a plug in a tubing due to the balance of the rolling load of inclined roll and the coefficient of friction between the tubing and the plug in the cross helic...  
JPH03226303A
PURPOSE: To improve productive efficiency by rolling by preventing bulge with guide shoes which are provided among each roll when the metallic tubing with a large outside diameter into which a mandrel is inserted and which the ratio of t...  
JPH03216205A
PURPOSE: To ensure the stable workability of scraping and cleaning by scraping the edges only of disk guide shoes on the inlet side of rolling. CONSTITUTION: The disk guide shoes 3, 4 of a rolling mill with inclined roll are scraped and ...  
JPH03216203A
PURPOSE: To manufacture the above clad steel tube without generating peeling and crack by giving a negative convergence angle to each roll of a three roll elongator and providing guide shoes freely movably forwards and backwards between ...  
JPH03211261A
PURPOSE: To obtain a tube excellent in both strength and ductility only by annealing treatment, at the time of manufacturing a tube by an inclined rolling method, immediately after the end of hot rolling, rapidly cooling the rolled stock...  
JPH03204106A
PURPOSE: To improve the durability of plug by providing the covering layer of a specified composition on the surface of plug for manufacturing hot seamless tube and further forming an iron oxide layer with a specified thickness on that s...  
JPH03198902A
PURPOSE: To obtain a thin small diameter tube without squarishness, wrinkly flaws on the inner surface of tube and flaws on the outer surface of tube by forming elongating rolling under specific conditions using a plug with a rolling par...  
JPH03193204A
PURPOSE: To prevent the erosion and deformation of plug even when a seamless tube of high-alloy steel or nickel base alloy, etc., is manufactured by forming a covering layer of specified composition on the surface of base material for pl...  
JPH0337770Y2  
JPH03174908A
PURPOSE: To easily and quickly perform on-line roll change by providing inner housings inside frames and providing guides with which roll chocks which are separated from draft adjusting devices are supported within those housing. CONSTIT...  
JPH03169410A
PURPOSE: To roll a fine seamless steel tube without flaw on the inner surface by measuring piercing efficiency under rolling and knurling roll surfaces so as to make that measured value not less than a preliminarily determined value. CON...  
JPH03169445A
PURPOSE: To mass-produce a titanium ring for electrodeposition drum having good surface characteristic and high circularity under good workability by executing specific ring rolling to reduction ratio and outer diameter expanding velocit...  
JPH03169413A
PURPOSE: To improve the productivity by knurling the surface roughness of a roll in a specified range during rolling a seamless steel tube by a skew rolling mill. CONSTITUTION: When the seamless steel tube is pierced or rolled by the ske...  
JPH03169411A
PURPOSE: To prevent seizure by providing nozzles with which lubricant is jetted toward rotary disks on the outside part of cannon with which a billet is introduced to a piercing roll in the piercing device of the manufacturing line for s...  
JPH03165903A
PURPOSE: To manufacture a tubing with the wall thickness and outside diameter of high accuracy in high yield by accelerating controlling the moving speed of mandrel bar in the rolling direction when the rear end part of tubing is rolled....  
JPH0346204B2  
JPH0346205B2  
JPH0368902U  
JPH03155401A
PURPOSE: To shorten the length of a flare generated at the rear end part of a tube material and to improve the yield by adjusting the opening of rolling rolls so that the reduction of thickness of the rear end part of the tube material i...  
JPH03151103A
PURPOSE: To prevent a large crack and a small rash flaw from generation by heating and piercing a billet of deeplex stainless steel material at a specified temperature. CONSTITUTION: The relation between the heating temperature of duplex...  
JPH03151104A
PURPOSE: To improve the productivity and to reduce the product cost without making a defect such as a crack on a product tube by determining a proper range of a quantity of state regarding the rolled state of a metallic tube and changing...  
JPH03151105A
PURPOSE: To prevent titanium oxide from sticking to inclined rolls by piercing or drawing a billet or a hollow piece as water of high pressure exceeding a specified pressure is ejected on the surfaces of inclined rolls for descaling. CON...  
JPH0342123B2  
JPH03149180A
PURPOSE: To satisfy RMAX2μm or less surface roughness, required for a copying machine drum, with no necessity for accurate cutting work of high manufacture cost by applying roller burnishing work to an aluminum or aluminum alloy drawn p...  
JPH03146206A
PURPOSE: To prevent the seizure of rolls or tripping of driving and to prevent the generation of a defect in thickness and diameter by actually measuring the shell speed just before a shell is bitten in a sizer and controlling the roll s...  
JPH0328961Y2  
JPH0340642B2  
JPH0340644B2  
JPH0340643B2  
JPH03142010A
PURPOSE: To agree a predicted value with a target value though a varying factor of rolling time is generated by predicting a rolling work done when a tube stock has been rolled and controlling a target electric power of rolling so that a...  
JPH0327682Y2  
JPH0338001B2  
JPH03128106A
PURPOSE: To obtain a good internal face quality by deciding the moving speed of a mandrel bar and the initial position of the rolling start time under the conditions of reaching the start point of a roll bite part simultaneously with the...  
JPH03128107A
PURPOSE: To obtain a high internal face quality as far as possible by using a mandrel bar equipped with a tapered part connected to a regular part and the rear side thereof, bringing the whole length of the effective part of the mandrel ...  
JPH03124305A
PURPOSE: To improve the life of a plug and the steel pipe quality by fitting a common steel made protection cap to the tip of a plug for piercing in case of manufacturing a seamless steel pipe with its piercing for an alloy steel. CONSTI...  
JPH0333407B2  
JPH0333406B2  
JPH03110007A
PURPOSE: To facilitate a recombination and an adjustment work with the structure being simple, by abutting to the internal face tapered part of the friction ring whose inner diameter becomes larger toward the inlet side and driving a rol...  
JPH03100139A
PURPOSE: To prevent the generation of cracks in the metallic tube caused by the difference in thermal expansion, in a one-end sealed metallic tube in which one end part is made of a tube the other end part is sealed, by integrally formin...  
JPH03100096A
PURPOSE: To obtain the title lubricant which can make a mixing operation simple and safe, facilitate sticking at ordinary temperature, shorten the drying time, and improve both the adhesiveness at ordinary temperature and the stability w...  
JPH0399708A
PURPOSE: To manufacture a high alloy steel seamless steel pipe of high quality by cooling the shell internal face by a cooling water during the piercing of a shell and controlling the temp. of the shell inner and outer faces at the temp....  
JPH0342302U  
JPH0342301U  
JPH0342303U  
JPH0386304A
PURPOSE: To obtain a material center rest feeding device which keeps a material on the center axis of a rotation working device by holding freely rotatably plural rings with containing the center axis of the rotation working device insid...  
JPH0325241B2  

Matches 1,201 - 1,250 out of 2,179