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21. 发明授权

US4722213A Method and apparatus for the production of bent tubes 失效
标题翻译：用于生产弯管的方法和设备
公开(公告)号：US4722213A
公开(公告)日：1988-02-02
申请号：US9006
申请日：1987-01-28
申请人： S. H. Gothe Enkvist
发明人： S. H. Gothe Enkvist
IPC分类号： B21C1/24 , B21C3/00 , B21C3/16 , B21C37/28 , B21D7/022 , F16L43/00
CPC分类号： B21C1/24 , B21C37/28 , B21D7/022
摘要： A bent tube is formed by passing a straight tube through a diameter-reducing die such that the central axis of the die forms an acute angle with the direction by which the tube is pulled through the die. The acute angle can be kept constant in order to produce a tube having a constant radius of curvature. Alternatively, the acute angle can be changed during the drawing process to form the tube with a radius of curvature which varies along the tube length.
摘要翻译：通过使直管通过直径减小模具形成弯管，使得模具的中心轴线与管被拉动通过模具的方向形成锐角。为了产生具有恒定曲率半径的管，锐角可以保持恒定。或者，可以在拉伸过程期间改变锐角，以形成具有沿管长度变化的曲率半径的管。

22. 发明授权

US4616500A Method for producing tubing of varying wall thickness 失效
标题翻译：生产不同壁厚管材的方法
公开(公告)号：US4616500A
公开(公告)日：1986-10-14
申请号：US704755
申请日：1985-02-25
申请人： Randall L. Alexoff
发明人： Randall L. Alexoff
IPC分类号： B21C1/24 , B21C37/16
CPC分类号： B21C1/24 , B21C37/16
摘要： A method for producing tubing of variable wall thickness, and particularly for producing double-butted tubing, wherein the wall thickness or gage at the ends of the tube is greater than that in the intermediate portion of the tube. This is accomplished by threading the tube over a mandrel, usually having a removable plug at one end thereof, until a portion of the plug passes through a necked-down end of the tube, pushing the tube and the mandrel through a die, and thereafter pulling the removable plug and the tube from the mandrel while causing the outer periphery of the tube to pass through a die.
摘要翻译：一种用于生产可变壁厚管道的方法，特别是用于生产双对接管道的方法，其中管端部处的壁厚或量规大于管的中间部分中的壁厚或量规。这通过将管穿过心轴，通常在其一端具有可移除的塞子，直到塞子的一部分穿过管的颈缩端，将管和心轴推过模具，然后在使芯管的外周通过模具的同时从心轴拉动可移除的塞子和管子。

23. 发明授权

US4534199A Method and apparatus for produced stepped tubes 失效
标题翻译：生产阶梯管的方法和装置
公开(公告)号：US4534199A
公开(公告)日：1985-08-13
申请号：US532070
申请日：1983-09-14
申请人： Kazuhide Takaishi , Toshiki Kadonaga , Masamitsu Tamura , Shigeharu Nakamura , Mitsuru Mizoguchi , Yoshinobu Hirota , Yukinobu Yamazaki
发明人： Kazuhide Takaishi , Toshiki Kadonaga , Masamitsu Tamura , Shigeharu Nakamura , Mitsuru Mizoguchi , Yoshinobu Hirota , Yukinobu Yamazaki
IPC分类号： B21D39/04 , B21C3/02 , B21C37/16 , B21C37/20 , B21C1/24 , B21C37/15
CPC分类号： B21C37/16
摘要： A method of producing a stepped tube, the method including the steps of preparing a straight mother tube with a stepped wall portion of a smaller inside diameter on the inner periphery thereof at a predetermined position in the longitudinal direction of the tube between opposite straight portions of a larger inside diameter; inserting the mother tube in a clearance a split die having a die cavity between bearing portions provided at opposite ends thereof and separable into first and second halves in the longitudinal direction at a median point of the die cavity and a plug member extensible through the die cavity; gripping a mouth portion of the mother tube by a carriage while positioning the plug member at one of the die bearing portions on the side of the carriage; moving the carriage in the longitudinal direction of the tube until the stepped wall portion on the inner periphery of the mother tube aligns with the die cavity, thereby expanding and stretching one of the straight portions; next moving the plug member up to the other die bearing portion to expand the inner stepped wall portion into and along the die cavity, forming a reversed stepped wall portion on the outer periphery of the mother tube; releasing the joined first and second halves of the split die to permit the first die half on the side of the carriage to move in the longitudinal direction of the tube; and moving the carriage again in the longitudinal direction of the tube to expand and stretch the other straight portion, thereby forming a tube with a circumferential stepped wall portion from a mother tube with an inner stepped wall portion.
摘要翻译：一种制造阶梯式管的方法，该方法包括以下步骤：在管的纵向上的预定位置处，在其内周上准备具有较小内径的台阶壁部的直母管，内径较大; 将母管插入间隙中，在具有设置在其相对端部的轴承部分之间具有模腔的分开模具中，并且在模腔的中点处可沿长度方向分离成第一半部和第二半部，以及通过模腔延伸的塞部件 ; 通过滑架抓住母管的口部，同时将插头构件定位在托架侧面的模具支承部分之一处; 沿着管的纵向方向移动托架，直到母管的内周上的台阶壁部分与模腔对准，从而使直线部分之一伸展和拉伸; 接着将插塞构件移动到另一个模具支承部分，以将内部阶梯壁部分扩展到模腔内并沿着模腔膨胀，在母管的外周上形成反向的台阶壁部分; 释放分离模具的连接的第一和第二半部以允许滑架侧面上的第一模具半部在管的纵向方向上移动; 并且沿着管的纵向方向再次移动托架以使另一直线部分伸展和拉伸，由此从具有内阶梯状壁部分的母管形成具有周向台阶壁部的管。

24. 发明授权

US4161112A Tube drawing technique 失效
标题翻译：管绘技术
公开(公告)号：US4161112A
公开(公告)日：1979-07-17
申请号：US879285
申请日：1978-02-21
申请人： Paul E. Stump
发明人： Paul E. Stump
IPC分类号： B21C1/00 , B21C1/24 , B21C3/16
CPC分类号： B21C3/16 , B21C1/24
摘要： A method of tube drawing a cold finished stepped internal diameter tube utilizing a novel mandrel plug having compound working surfaces designed to automatically adjust to the varying internal diameters formed in a tube hollow to be worked as it is drawn through a die.
摘要翻译：使用具有复合工作表面的新型心轴塞管来拉制冷成品阶梯式内径管的方法，所述复合工作表面被设计成自动调整成在通过模具拉制时待加工的管中空中形成的变化的内径。

25. 发明授权

US4148207A Drawing technique 失效
标题翻译：绘图技术
公开(公告)号：US4148207A
公开(公告)日：1979-04-10
申请号：US879288
申请日：1978-02-21
申请人： Paul E. Stump
发明人： Paul E. Stump
IPC分类号： B21C1/22 , B21C1/24 , B21C3/02 , B21C3/16
CPC分类号： B21C1/24 , B21C3/16
摘要： A method and apparatus for improving the interior or exterior surface smoothness of a tube shell during cold draw operations is disclosed wherein the final reduction of the tube shell is completed within the die land.
摘要翻译：公开了一种用于在冷拔操作期间改善管壳的内表面或外表面平滑度的方法和装置，其中管壳的最终减少在模具区域内完成。

26. 发明授权

US4006622A Continuous process for the production of very long precision tubes and installation for carrying out the process 失效
标题翻译：连续生产用于生产超长精密管和进行安装的过程
公开(公告)号：US4006622A
公开(公告)日：1977-02-08
申请号：US599186
申请日：1975-07-25
申请人： Johann Wassen , Heinz Kron , Hans Pferdekamper
发明人： Johann Wassen , Heinz Kron , Hans Pferdekamper
IPC分类号： B21C1/22 , B21B15/00 , B21B17/00 , B21B17/08 , B21C1/24 , B21C37/06
CPC分类号： B21C1/24 , B21C37/06 , B21B17/00 , B21B2015/0028
摘要： A novel method and a novel apparatus for continuously forming a very long tube with precise internal and external dimensions from a metal tube blank by reducing the internal diameter of the blank to that of an internal mandrel on which the blank is telescoped, preferable by cold forming the blank onto the mandrel and immediately thereafter, drawing of the tube while it is still on the mandrel to its final external dimension; with no annealing taking place between the two steps.
摘要翻译：一种新颖的方法和新颖的设备，用于通过将坯料的内径减小到坯料被套叠的内部心轴的内径，从金属管坯连续地形成具有精确内部和外部尺寸的非常长的管，优选通过冷成型坯料在芯轴上并立即在其仍然在心轴上至其最终的外部尺寸的同时拉伸; 在两个步骤之间不发生退火。

27. 发明授权

US3901063A Plugs for use in tube-drawing 失效
标题翻译：插头用于管绘
公开(公告)号：US3901063A
公开(公告)日：1975-08-26
申请号：US40731873
申请日：1973-10-17
申请人： STD SERVICES LTD
发明人： NILESHWAR VIVEK BABURAO
IPC分类号： B21C3/16 , B21C1/24
CPC分类号： B21C3/16
摘要： A plug for use in tube-drawing operations wherein the plug is formed of a ceramic material and is provided with means whereby an axially-directed compressive stress is applied to the plug.
摘要翻译：用于管拉拔操作的塞子，其中塞子由陶瓷材料形成，并且设置有将轴向压缩应力施加到塞子的装置。

28. 发明授权

US3857269A Non-rotatable tube pay-off apparatus 失效
标题翻译：不可转换的管子付款装置
公开(公告)号：US3857269A
公开(公告)日：1974-12-31
申请号：US35588673
申请日：1973-04-30
申请人： ALUMINUM CO OF AMERICA
发明人： MARTIN G
IPC分类号： B21C1/04 , B21C1/24 , B21C47/20
CPC分类号： B21C1/04 , B21C1/24 , B21C47/20 , Y10T29/49828
摘要： An apparatus for paying off coiled tubular stock in a low inertia, smoothly flowing, continuous manner. The stock is pulled from a non-rotatable container and directed through an elongated, hollow guide structure having a large, open end adjacent the container, the guide structure gradually decreasing in cross sectional area to relatively small open end in the direction away from the container.
摘要翻译：一种用于以低惯性，平稳流动，连续的方式回收卷状管状原料的装置。原料从不可旋转的容器中拉出并且引导通过一个细长的中空的导向结构，其具有与容器相邻的大的开口端，导向结构在横截面积上逐渐减小到远离容器的方向的相对较小的开口端。

29. 发明授权

US3828596A Automatic control system for draw-forming with vibratory energy 失效
标题翻译：具有振动能量的自动控制系统
公开(公告)号：US3828596A
公开(公告)日：1974-08-13
申请号：US32441673
申请日：1973-01-17
申请人： NIPPON KOKAN KK
发明人： USUI G , KOMINE I
IPC分类号： B21C1/00 , B21C1/24 , B21C3/00
CPC分类号： B21C1/24 , B21C1/006
摘要： In a tube-drawing system employing vibratory energy, many difficulties appear as a diameter of said tube, e.g. a charttering mark or a seizure on the surface of said tube, which is based on local friction heat. These phenomena are avoided by an automatic control of which the ratio of amplitude of vibrating energy to tube-drawing speed is adjusted to be in a suitable range of from 1.6 to 11.0.
摘要翻译：在采用振动能的管拉制系统中，出现许多困难，如所述管的直径，例如，在所述管的表面上产生标记或缉获物，其基于局部摩擦热。通过将振动能量的振幅与拉伸速度的比率调整到1.6〜11.0的合适范围的自动控制来避免这些现象。

30. 发明授权

US3798943A Method and apparatus for cold-drawing metallic tubes 失效
标题翻译：用于冷轧金属管的方法和装置
公开(公告)号：US3798943A
公开(公告)日：1974-03-26
申请号：US26597072
申请日：1972-06-26
申请人： BENTELER WERKE AG
发明人： BENTELER H , HARTMANN F , HEFENDEHL H
IPC分类号： B21C1/24 , B21C3/14
CPC分类号： B21C1/24 , B21C3/14
摘要： Steel tubes are cold-drawn in a bench wherein the reducing die is located in front of a sleeve defining with the external surface of the tube to be cold-drawn an elongated tubular confining space which tapers toward the die at an angle of less than 3*. The space is filled with a lubricant at an elevated pressure of up to 100 atmospheres superatmospheric pressure, and such pressure rises automatically to a value exceeding at least 10 times the initial pressure when the tube is moved lengthwise at a speed of up to and in excess of 300 meters per minute. The rise in pressure of confined lubricant is due in part to friction between the lubricant and the external surface of the tube and suffices to insure that the moving tube remains out of mechanical contact with the die. A similar forwardly tapering confining space for reception of a pressurized lubricant can be provided between the internal surface of the tube and a confining member which is connected to and located behind a floating mandrel. The thus treated tube can be subjected to one or more additional cold-drawing treatments to reduce its outer diameter from 8-35 millimeters to about 3 millimeters and its wall thickness from about 3.5 millimeters to about 1 millimeter.
摘要翻译：将钢管冷却在工作台中，其中，还原模具位于限定管的外表面的套筒的前面，以冷拉，细长的管状封闭空间以小于3的角度朝向模具渐缩 DEG。该空间在高达100大气压超高压的高压下填充润滑剂，并且当管以高达和超过的速度纵向移动时，这种压力自动上升至超过初始压力的至少10倍的值每分钟300米。密封润滑剂的压力上升部分是由于润滑剂和管的外表面之间的摩擦，足以确保移动管保持与模具的机械接触。可以在管的内表面和连接到并位于浮动心轴后面的限制构件之间提供用于接收加压润滑剂的类似的向前渐缩的限制空间。如此处理的管可以进行一次或多次额外的冷拔处理，以将其外径从8-35毫米减小到约3毫米，其壁厚约为3.5毫米至约1毫米。

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