公开(公告)号：US20140191150A1

公开(公告)日：2014-07-10

申请号：US14208822

申请日：2014-03-13

Applicant: Nittan Valve Co., Ltd.

Inventor： Maiku MIKAMI ,  Kazunori KURAHASHI

IPC: F16K1/42

CPC classification number: F16K1/42 ,  B21K1/22 ,  B23P15/002 ,  F01L3/00 ,  F01L3/04 ,  F01L2103/00 ,  Y10T137/0491 ,  Y10T137/0497

Abstract: A method of forming a poppet valve having a stem, a valve head and a valve seat while concurrently maintaining compressive residual stress without grain coarsening on both the valve body and the valve seat. The method includes forming a rounded cladded part on the valve head of the poppet valve by welding and forming a valve seat surface at a predetermined aperture angle and cutting the cladded part to form a smooth surface which is subjected to uniform contact pressure at a temperature less than the recrystallization temperature of the base material or cladding material, whichever is lower, to enhance the durability of the valve seat.

Abstract translation: 一种形成具有杆，阀头和阀座的提升阀的方法，同时保持压缩残余应力而不会在阀体和阀座两者上产生晶粒粗化。 该方法包括通过以预定的孔径角焊接和形成阀座表面，在提升阀的阀头上形成圆形包层部分，并切割该包层部分以形成光滑表面，其在较低温度下受到均匀的接触压力 比基材或包层材料的再结晶温度（以较低者为准），以提高阀座的耐久性。

公开(公告)号：US20130313463A1

公开(公告)日：2013-11-28

申请号：US13955635

申请日：2013-07-31

Applicant: YOSHIMURA COMPANY ,  MITSUBISHI HEAVY INDUSTRIES, LTD.

Inventor： Hyoji YOSHIMURA

IPC: F01L3/16

CPC classification number: F01L3/16 ,  B21D53/84 ,  B21K1/22 ,  B23K11/0935 ,  B23P15/002 ,  F01L3/14 ,  F01L2103/00 ,  Y10T29/49307 ,  Y10T29/49309 ,  Y10T29/49405

Abstract: Forming of a valve head portion (1) of a hollow engine valve (V) comprising a material particularly satisfactory in heat resistance is performed by cold forging. On this occasion, the material with excellent heat resistance is worked to form a valve head portion semifinished product (11) having a hollow hole (S11) whose inner diameter (φ11) is equal to the maximum inner diameter (φ11) of a hollow hole (S1) of a finished product of the valve head portion (1), and having a diameter-increased section (111) whose maximum outer diameter (φ12) is equal to the maximum outer diameter (φ12) of a diameter-increased section (1a) of the finished product. Parts of the valve head portion semifinished product other than a central part to a lower part of the diameter-increased section (111) are necked down by cold forging performed a plurality of times to obtain the finished product of the valve head portion (1). This method of obtaining the finished product is provided by the present invention.

Abstract translation: 通过冷锻进行包括特别令人满意的耐热性的材料的中空发动机阀（V）的阀头部（1）的形成。 在这种情况下，对耐热性优异的材料进行加工，形成具有中空孔（S11）的阀头部半成品（11），其内径（phi11）等于中空孔的最大内径（phi11） （1）的最终外径（phi12）直径增大部分（111）的直径增大部分（111） 1a）成品。 除了直径增加部分（111）的中心部分到下部的阀头部分半成品的部分通过冷锻多次进行颈缩，以获得阀头部分（1）的成品， 。 这种获得成品的方法由本发明提供。

公开(公告)号：US20120304464A1

公开(公告)日：2012-12-06

申请号：US13519813

申请日：2010-10-06

Applicant: Hirokazu Morii ,  Hyoji Yoshimura

Inventor： Hirokazu Morii ,  Hyoji Yoshimura

IPC: B21K1/22

CPC classification number: B21D53/84 ,  B21D41/045 ,  B21K1/22 ,  B21K21/16 ,  B23P15/002 ,  F01L3/14 ,  F01L3/20 ,  F01L2103/00 ,  F01L2103/01 ,  Y10T29/49307

Abstract: A method for manufacturing a hollow engine valve includes inserting a half-finished hollow shaft section in sequence into die holes which have different hole shapes, and sequentially drawing so as to reduce the outer diameter and the inner diameter of the hollow shaft section and stretch its length in stages. The half-finished product is subjected to heat treatment so that the hardness thereof is lower than or equal to a predetermined level. A shaft end sealing section is formed by increasing the wall thickness of the opening end of the hollow shaft section toward the inside of the opening and the gap in the shaft end sealing section is welded.

Abstract translation: 中空发动机阀的制造方法包括将半成品空心轴部分顺序地插入具有不同孔形状的模孔中，并且顺序地拉伸以减小中空轴部的外径和内径并拉伸其 长度在阶段。 对半成品进行热处理，使其硬度低于或等于预定水平。 通过将中空轴部的开口端的壁厚朝向开口的内部增大并且轴端密封部的间隙被焊接而形成轴端密封部。

公开(公告)号：US20090293275A1

公开(公告)日：2009-12-03

申请号：US12156395

申请日：2008-05-29

Applicant: Vince Marino

Inventor： Vince Marino

IPC: B21K1/22

CPC classification number: B21K1/22 ,  B21K25/00 ,  Y10T29/49298

Abstract: A method of manufacturing an intake vallve for an internal combustion engine is disclosed. The method comprises providing a valve base comprising an elongated stem and an enlarged portion. A floating peripheral ring is provided and is positioned on the valve base. The floating peripheral ring is locked into place with an annular locking component. The locking component defines a range of motion of the floating peripheral ring with respect to the valve base.

Abstract translation: 公开了一种制造用于内燃机的进气门的方法。 该方法包括提供包括细长杆和扩大部分的阀座。 提供了一个浮动的外围环，并定位在阀座上。 浮动的外围环通过环形锁定部件锁定到位。 锁定部件限定浮动周边环相对于阀座的运动范围。

公开(公告)号：US06378543B1

公开(公告)日：2002-04-30

申请号：US09582205

申请日：2000-07-17

Applicant: Takemi Murayama

Inventor： Takemi Murayama

IPC: B21K122

CPC classification number: B23P15/002 ,  B21K1/22 ,  F01L3/20 ,  F01L3/24 ,  Y10T29/49307 ,  Y10T137/0491

Abstract: In order to propose a hollow poppet valve having an excellent, high strength to weight properties by constructing it in order that no influence from welding heat is exerted onto the face, and no stress is concentrated at the welded portion, and a method for manufacturing the same valve, a fillet area 14 opened like a flare is integrally formed at one end of the cylindrical stem portion 12, and a cap is integrally welded to the open edge portion of the fillet area, wherein only the open edge portion of the fillet area 14 is made thicker than the other portions, and the face 15 is formed on the thicker portion 30. Thereby, it is possible to prevent the hardness of the face 15 from being lowered due to the cap welding heat, and stress from being concentrated at the welded portion, whereby the property of high strength to weight can be improved.

Abstract translation: 为了提出通过构造具有优异，高强度和重量特性的中空提升阀，以便不会对焊接热量施加影响而不会在焊接部分集中应力，而且制造方法 相同的阀，在圆筒形杆部12的一端一体地形成有像喇叭口一样开口的圆角区域14，并且将盖整体焊接到圆角区域的开口边缘部分，其中只有圆角区域的开口边缘部分 14的厚度比其他部分厚，并且面15形成在较厚部分30上。由此，可以防止由于盖焊热而使表面15的硬度降低，并且应力集中在 焊接部分，从而可以提高高强度和高重量的性能。

公开(公告)号：US5619796A

公开(公告)日：1997-04-15

申请号：US668003

申请日：1996-06-19

Applicant: Jay M. Larson ,  David L. Bonesteel

Inventor： Jay M. Larson ,  David L. Bonesteel

IPC: F01L3/14 ,  B21D22/21 ,  B21K1/22 ,  B23P15/00 ,  F01L3/02 ,  F01L3/20

CPC classification number: B21D22/21 ,  B21K1/22 ,  B23P15/002 ,  F01L3/02 ,  F01L3/14 ,  F01L3/20 ,  Y10T29/49307 ,  Y10T29/49314

Abstract: An ultra light popper valve for an internal combustion engine. The valve is formed by cold forming a blank into an elongated cup having an extremely thin wall and a flared open end onto which a cap is welded, the bosom end of the cup which defines the tip end of the valve having a wall section which is substantially of the thickness of the original blank. In accordance with one aspect of the invention, a keeper groove is formed adjacent the tip end as part of the cold forming process.

Abstract translation: 一种用于内燃机的超轻弹簧阀。 该阀通过将坯件冷成型为具有非常薄的壁和扩口的开口端的细长杯而形成，盖子在其上被焊接到其上，限定阀的顶端的杯的端部具有壁部分，壁部分是 基本上是原始坯料的厚度。 根据本发明的一个方面，作为冷成型工艺的一部分，在尖端附近形成保持器槽。

公开(公告)号：US5257453A

公开(公告)日：1993-11-02

申请号：US910681

申请日：1992-07-08

Applicant: William Neumann ,  Roger R. Wills ,  Mohan Kurup ,  Victor Levin

Inventor： William Neumann ,  Roger R. Wills ,  Mohan Kurup ,  Victor Levin

IPC: B21C23/14 ,  B21J5/00 ,  B21K1/22 ,  B23P15/00 ,  C21D8/00 ,  C21D8/06 ,  C21D9/00 ,  C22C38/00 ,  C22C38/48 ,  C22C38/58 ,  F01L3/02 ,  B21D53/00

CPC classification number: B21K1/22 ,  B23P15/002 ,  C21D8/005 ,  C22C38/58 ,  F01L3/02 ,  C21D9/0068 ,  Y10T29/49298 ,  Y10T29/49309 ,  Y10T29/49311

Abstract: A method of making work-hardened poppet exhaust valves for internal combustion engines comprises the steps of: providing a solutioned work-hardenable austenitic stainless steel coil or bar stock in which chromium is present in the range of 13%-25% by weight, nickel is present in the range of 4%-16% by weight, manganese is present in the range of 0.25%-8% by weight, copper is present in the range of 0.5%-7% by weight, the interstitial elements carbon plus nitrogen are present in a total amount less than 0.45% by weight, and at least one refractory metal selected from the group consisting of molybdenum, niobium, vanadium, tungsten and tantalum is present in the range of 1%-5% by weight; extruding the coil stock to a poppet valve preform configuration at a speed in the range of 60 to 100 strokes per minute and at a temperature in the range of room temperature to 1,000.degree. F.; and heading the preform at the same speed while maintaining the head of the preform at a temperature in the range of room temperature to 2,200.degree.; the parameters of extrusion providing the work-hardened poppet valve with a stem hardness more than R.sub.c =25.

公开(公告)号：US5056219A

公开(公告)日：1991-10-15

申请号：US608746

申请日：1990-11-05

Applicant: Satoru Iwase

Inventor： Satoru Iwase

IPC: F01L3/00 ,  B21K1/22 ,  B23P15/00 ,  F01L3/02 ,  F01L3/14

CPC classification number: F01L3/14 ,  B21K1/22 ,  B23P15/002 ,  F01L3/02 ,  Y10T29/49309 ,  Y10T29/49311 ,  Y10T29/49314

Abstract: A method of manufacturing a hollow engine valve includes the steps of inserting a core of free-cuting metal into a pipe material of heat-resistant steel to provide a shaping stock, shaping the shaping stock into a rough valve profile of a mushroom shape, subsequently forming a hole in a central portion of said rough valve profile by cutting, and sealingly plugging an open end of the hole close to the valve mushroom portion.

Abstract translation: 制造中空发动机阀的方法包括以下步骤：将自由切削金属芯插入耐热钢的管材中以提供成形坯料，将成型料成形为蘑菇形状的粗糙阀形状，随后 通过切割在所述粗糙阀轮廓的中心部分中形成孔，并且密封地堵塞靠近阀蘑菇部分的孔的开口端。

公开(公告)号：US4263799A

公开(公告)日：1981-04-28

申请号：US58950

申请日：1979-07-19

Applicant: Torazi Motizuki

Inventor： Torazi Motizuki

IPC: B21J9/08 ,  B21K1/22 ,  B21K1/76

CPC classification number: B21K1/76 ,  B21J9/08 ,  B21K1/22 ,  Y10T29/49307

Abstract: First a metallic pipe is tapered, so that it is substantially closed at its end, and so that its cross-section is reduced. Then it is pressed hard against a mold electrode, and a large electric current is passed through it to the mold electrode, so that the end softens, but does not melt, and by the pressing (which may be of the order of 2.5 tons weight) the end is formed into a lump, with no trace remaining of the hole through the pipe within the lump. In certain embodiments, the mold electrode may be formed with a notch, and/or a depression, and may be inclined at an oblique angle to the axis of the pipe, and may be moved sideways or at an oblique angle to the axis of the pipe as the current is passed and the lump formed.

Abstract translation: 首先，金属管是锥形的，使得其在其端部基本上封闭，并且使得其横截面减小。 然后将其压在模具电极上，并且大的电流通过它到模具电极，使得端部软化但不熔化，并且通过压制（其可以是2.5吨重量级） ）端部形成为块状，通过管内不存在孔的痕迹。 在某些实施例中，模具电极可以形成有凹口和/或凹陷，并且可以以与管的轴线成倾斜的角度倾斜，并且可以沿着管的轴线倾斜或倾斜地移动 管道当前通过并形成块状。

公开(公告)号：US3793873A

公开(公告)日：1974-02-26

申请号：US3793873D

申请日：1972-06-01

Applicant: MITSUBISHI MOTORS CORP ,  MITSUBISHI HEAVY IND LTD

Inventor： IWATA T ,  MIWA M ,  HOJYO N ,  ANDO T

IPC: B21J9/08 ,  B21K1/22

CPC classification number: B21K1/22 ,  B21J9/08 ,  Y10T29/49309

Abstract: This invention relates to a method of hot forming from a blank pipe hollow mushroom type metallic parts having a hollow stem and a cap portion whose outer diameter is far larger than that of the blank pipe. By using a thin-walled pipe whose size corresponds to that of the hollow stem processing of the hollow stem can be omitted or minimized. More particularly, it relates to a method of hot forming hollow valves for engines or parts having a cap portion and hollow stem, the outer diameter of said cap portion being more than two or three times as large as that of the stem portion, by using a thin-walled pipe having a ratio between its outer diameter and its wall thickness of more than 3.5.

Abstract translation: 本发明涉及一种由具有中空杆的空管中空蘑菇型金属部件和外径远远大于空管的盖部的热成型方法。 通过使用尺寸对应于空心杆的中空杆加工的薄壁管可以省略或最小化。 更具体地说，本发明涉及一种用于发动机或零件的中空阀的热成型方法，所述中空阀具有盖部分和中空杆，所述盖部分的外径大于阀杆部分的直径的两倍或三倍，通过使用 薄壁管的外径与壁厚之比大于3.5。