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Patent Searching and Data


Matches 1,301 - 1,350 out of 2,190

Document Document Title
JPH0225521Y2  
JPH0287501U  
JPH0230763B2  
JPH02175012A
PURPOSE: To manufacture product tubes having optional outside diameters by sizing a billet without using plug by an elongator and/or a reeler after the billet is pierced by a piercer. CONSTITUTION: A billet 1 is heated by a heating furna...  
JPH02501992A  
JPH02169128A
PURPOSE: To average rolling action at each part as possible and to work a cold rolled product good in quality by giving a small difference to surface to be roll-formed by a right and a left unit roll not to leave a non-forming part when ...  
JPH0229401B2  
JPH02165890A
PURPOSE: To efficiently obtain the stainless steel for far IR radiators by forming a stainless steel strip subjected to a dull skin pass treatment into a welded stainless steel pipe and forming this steel pipe as the steel pipe having sp...  
JPH0228401B2  
JPH02160111A
PURPOSE: To manufacture a tube having an inside spiral groove high in dimensional accuracy by using a skew rolling mill having a plug provided with a spiral groove, carrying out skew hot rolling of a metallic tube stock, removing the oxi...  
JPH02160103A
PURPOSE: To manufacture titanium seamless tubes in a seamless tube continuous manufacturing line by bringing a temp. of a titanium hollow shell in the inlet side of a sizer to be a specific temp. and sizing rolling the shell by a specifi...  
JPH02160112A
PURPOSE: To greatly reduce the manufacturing manhour for a metallic tube having an inside spiral groove by piercing and rolling a metallic tube of a solid circular section in a hot state through a skew rolling mill in which a plug provid...  
JPH0227043B2  
JPH0227044B2  
JPH0225682B2  
JPH02142604A
PURPOSE: To perform high efficient and accurate rolling by composing a mechanism so that an optimum operation terminal can be selected in on-line in accordance with situations by using a prescribed shape evaluation function by an optimum...  
JPH0224602B2  
JPH0224162B2  
JPH02137604A
PURPOSE: To prevent generation of surface defects such as eruption, flaws, and cracks on both the outside and inside surfaces of a tube by forming a solid billet of an α+β type titanium alloy at a specified working finish temp. and a s...  
JPH0217681Y2  
JPH0265402U  
JPH0216801Y2  
JPH02121706A
PURPOSE: To manufacture high quality seamless metal tubes having no shoe mark flaw by changing a working position in the direction orthogonal to a rolling direction of disk shoes per rolling and mechanically removing adhered metal on dis...  
JPH02121707A
PURPOSE: To work a long-sized, highly tough, and viscous stock having good working accuracy by separately installing an independently and respectively driven rotating roller head and a rotating casing and bringing the roller head provide...  
JPH02117706A
PURPOSE: To concurrently attain improvement of both biting property of rolls and reeling effect and tube quality by bringing a toe-in angle of the roller axis of reel rollers to be large in biting a tube and to be small after biting. CON...  
JPH0219723B2  
JPH0218921B2  
JPH02112804A
PURPOSE: To efficiently improve quality by cooling an elongated pipe material to a specific temp. or below from the specific temp. region, then reheating the material to the temp. region below ≤β transus and above a specific temp. and...  
JPH02108402A
PURPOSE: To obtain a tube stock with no surface flaw and to improve the tube manufacturing efficiency and yield by working the stock by specifying a working ratio of an ingot and a surface temp. at finish of the working. CONSTITUTION: A ...  
JPH0253801U  
JPH02104405A
PURPOSE: To prevent generation of improper wall thickness and to obtain a metal tube with good accuracy by drawing the tube by setting a face angle of a reeling part and a face angle of an outlet side part to a pass line of plural cross ...  
JPH02104404A
PURPOSE: To efficiently manufacture a titanium seamless tube in a continuous line by piercing and rolling a conjugate billet for which the peripheral surface of a titanium core stock is covered with an iron base metal at a temp. lower th...  
JPH0211923Y2  
JPH0270338A
PURPOSE: To manufacture a spiral fin by one process by using a rolling roll in which a depth direction angle of an annular groove in the rolling roll against a pass line of a solid metallic bar is roughly vertical toward the entry and in...  
JPH0270339A
PURPOSE: To form the diameter of a rolling roll to several times of a metallic bar and to raise the production efficiency by using the rolling roll having plural pieces of annular grooves in the peripheral direction of the outside periph...  
JPH0241707A
PURPOSE: To eliminate a tube rotating device and to reduce a rolling cycle time by concurrently performing reverse transfer and turning by a prescribed angle by reversal rolls given an adjusted skew angle after a 1st rolling for a tube s...  
JPH0241706A
PURPOSE: To reduce the outside diameter of a metal tube to a prescribed size in highly accurate roundness by pressing plural rolling rollers onto the outside surface of the tube and rotating the rollers at a high speed around the tube. C...  
JPH0234240A
PURPOSE: To prevent the generation of excessive force by comparing the radial forces generated on the rolls of a roll pair with each other and, in the case the forces are over the allowable deviation force, adjusting the force along the ...  
JPH0234752A
PURPOSE: To manufacture a seamless pipe stock by a simplified process, by subjecting a billet of pure Ti or alpha or alpha plus beta Ti alloy to heating, piercing, incline drawing rolling, plug mill rolling, and finish working at the tam...  
JPH0225204A
PURPOSE: To improve the yield and the quality of a product of a seamless steel tube by varying a roller interval of the inlet side and the outlet side of a rolling roll when the rolling material is being rolled. CONSTITUTION: By a pair o...  
JPH01321002A
PURPOSE: To prevent a slanting phenomenon of the rear end caused by eccentric heating by forming the rear end of a round billet into a slant shape in accordance with eccentric heating in the circumferential direction. CONSTITUTION: A rou...  
JPH0159042B2  
JPH0140566Y2  
JPH01293909A
PURPOSE: To restrain generation of flaws on the tube inside surface by specifying both a shape and a setting position of a plug for piercing a round billet by use of inclined rolls and a plug. CONSTITUTION: A continuously cast billet con...  
JPH01289504A
PURPOSE: To obtain a steel tube having good durability and good inner surface quality by forming the top part of a plug out of a niobium alloy containing a specific volume of niobium. CONSTITUTION: A plug 4 is composed of a top part 4a a...  
JPH01165101U  
JPH01284407A
PURPOSE: To easily and accurately predict pullout capability by judging insufficient pullout capability of a mandrel bar at the time that an electric current value of a driving motor for rolling rolls of a sizer exceeds a limit value whe...  
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...  

Matches 1,301 - 1,350 out of 2,190