公开(公告)号：US20090020191A1

公开(公告)日：2009-01-22

申请号：US10570780

申请日：2004-06-16

申请人： Barry Messer ,  Terrell T. Phillips ,  Vasile Oprea

发明人： Barry Messer ,  Terrell T. Phillips ,  Vasile Oprea

IPC分类号： C21D9/50 ,  C22C38/00

CPC分类号： C21D6/004 ,  C21D1/30 ,  C21D1/78 ,  C21D9/50

摘要： Thermo-mechanical properties of welds in stainless steel is substantially improved by the implementation of a post weld heat treatment that iliminates sigma phase in the heat treated zone and favors niobium carbonitride precipitate formation in a desirable size range. In most cases, post weld heat treated material can be employed in pressurized devices at temperatures exceeding 550° C., which is currently regarded the upper safe temperature limit, and material according to the inventive subject matter was tested at temperature of up to 850° C. without reheat cracking.

摘要翻译： 不锈钢焊缝的热机械性能通过实施在热处理区域中描绘σ相的焊后热处理而显着提高，并且有利于在期望的尺寸范围内的碳氮化铌沉淀物形成。 在大多数情况下，焊后热处理材料可以在超过550℃的加压装置中使用，其目前被认为是较高的安全温度极限，并且根据本发明主题的材料在高达850°C的温度下被测试 C.没有再加热开裂。

公开(公告)号：US07270607B2

公开(公告)日：2007-09-18

申请号：US10857982

申请日：2004-06-02

申请人： Hiroshi Murakami ,  Chikara Ohki

发明人： Hiroshi Murakami ,  Chikara Ohki

IPC分类号： F16D3/205

CPC分类号： C23C8/32 ,  C21D1/78 ,  C21D9/0068 ,  C21D9/40 ,  C23C8/80 ,  F16D3/2055 ,  Y10S464/905

摘要： To provide a constant velocity universal joint having a high resistance to cracking, a high dimensional stability and an excellent rolling fatigue life, the constant velocity universal joint includes an outer coupling member (5), an inner coupling member such as a tripod member (2), and a drive transmitting member such as rollers (7) operatively interposed between the outer and inner coupling members (5 and 2). At least one of the outer coupling member (5), the tripod member (2) and the rollers (7) has a carbonitrided layer and, at the same time, an austenite grain size is greater than the grade of No. 10.

摘要翻译： 为了提供具有高抗开裂性，高尺寸稳定性和优异的滚动疲劳寿命的等速万向接头，等速万向接头包括外联接构件（5），诸如三脚架构件（2）的内联接构件 ）和可操作地插入在所述外联接构件（5和2）之间的诸如辊（7）的驱动传递构件。 外联接构件（5），三球架构件（2）和滚子（7）中的至少一个具有碳氮共渗层，同时奥氏体晶粒尺寸大于10号的等级。

公开(公告)号：US20070163683A1

公开(公告)日：2007-07-19

申请号：US10589079

申请日：2005-01-28

申请人： Gerhard Schiessl

发明人： Gerhard Schiessl

IPC分类号： C21D8/02 ,  C21D1/10

CPC分类号： C21D9/46 ,  C21D1/673 ,  C21D1/78 ,  C21D2211/008 ,  C21D2251/00 ,  Y02P10/212

摘要： The invention relates to a method for producing a component by reshaping a coated plate consisting of tempering steel, said plate being austenitized before the reshaping by means of a first heat treatment, followed by the growth of the layer thickness. The aim of the invention is to optimize the process and to prevent the production of scrap plates caused by interruptions to the process. To this end, after being rapidly cooled, the heat-treated plate is temporarily stored, and is briefly heated again to the austenitization temperature, directly before being reshaped to form the component. Once the structure has been modified, the plate is reshaped and hardened. Preferably, the plate is heated a second time by induction.

摘要翻译： 本发明涉及一种通过重塑由回火钢组成的涂布板来制造组分的方法，所述板在通过第一热处理再成型之前被奥氏体化，随后层厚度的增长。 本发明的目的是优化该过程并防止由于该过程的中断而产生的废料板。 为此，在快速冷却之后，将热处理板暂时储存，并再次再次加热至奥氏体化温度，直到重新形成组分。 一旦结构被修改，板被重塑和硬化。 优选地，板通过感应加热第二次。

公开(公告)号：US20060243352A1

公开(公告)日：2006-11-02

申请号：US11476381

申请日：2006-06-28

申请人： Ryoji Hayashi ,  Makoto Iguchi

发明人： Ryoji Hayashi ,  Makoto Iguchi

IPC分类号： C22C38/14

CPC分类号： C21D1/78 ,  C21D1/10 ,  C21D8/06 ,  C21D2211/004 ,  Y02P10/253

摘要： Disclosed is a production process of a steel product for induction hardening and a steel product for carburizing, having improved grain size properties and machinability. This production process comprises the steps of: providing an ingot or bloom comprising a steel comprising, by weight, carbon (C): 0.10 to 0.45% or 0.25 to 0.70%, silicon (Si): 0.03 to 1.0%, manganese (Mn): 0.2 to 2.0%, titanium (Ti): 0.05 to 0.2%, aluminum (Al): 0.005 to 0.05%, and nitrogen (N): not more than 0.01% with the balance consisting of iron (Fe) and unavoidable impurities; and subjecting the steel ingot or bloom to a series of hot working steps including the step of rolling the steel ingot or bloom into a semi-finished steel product, the step of rolling the semi-finished steel product into a steel bar or wire rod, and the step of forging the steel bar or wire rod into a product. In the above series of hot working steps, the steel is given a thermal history in which said steel is at least once heated to 1,250 ° C. or above, is cooled to room temperature, and is then reheated to a temperature range of 800 to 1,100 ° C.

摘要翻译： 公开了一种用于感应淬火的钢制品的生产方法和用于渗碳的钢产品，其具有改善的粒度性能和可加工性。 该制造方法包括以下步骤：提供含有碳（C）：0.10〜0.45％或0.25〜0.70％，硅（Si）：0.03〜1.0％，锰（Mn） ：0.2〜2.0％，钛（Ti）：0.05〜0.2％，铝（Al）：0.005〜0.05％，氮（N）：0.01％以下，余量由铁（Fe）和不可避免的杂质构成。 对钢锭或花坯进行一系列的热加工工序，包括将钢锭或花纹轧制成半成品钢的工序，将半成品钢材轧制成钢棒或线材的工序， 以及将钢筋或线材锻造成产品的步骤。 在上述一系列热加工步骤中，钢被给予热历史，其中所述钢至少一次加热至1,250℃或以上，冷却至室温，然后再加热至800至 1100℃

公开(公告)号：US06966954B2

公开(公告)日：2005-11-22

申请号：US10279488

申请日：2002-10-24

申请人： Mark Alan Rhoads ,  Michael Gilbert Johnson ,  Jonothan Allen Scheetz

发明人： Mark Alan Rhoads ,  Michael Gilbert Johnson ,  Jonothan Allen Scheetz

IPC分类号： C21D1/78 ,  C21D6/00 ,  C23C8/26 ,  F16C33/12 ,  C22C38/22 ,  C21D9/00 ,  C22C38/44

CPC分类号： F16C33/12 ,  C21D1/78 ,  C21D6/002 ,  C21D6/004 ,  C23C8/26 ,  F16C2204/60

摘要： A roller bearing that provides ball and roller bearing elements comprised of M50 steel and M50NiL steel having surface hardnesses above 60 HRC, and in the range of 65-72 HRC. The hardness in the surface region is achieved by nitriding the surface to achieve a high hardness and extended life. This improvement is brought about by controlling the microstructure of the alloy by minimizing the formation of retained austenite. The material is tempered as required. The surface is then nitrided, but the nitriding operation is carefully controlled to avoid the formation of intergranular nitrides. Because of the method used to prevent the formation of intergranular nitrides, some carbon may be present to prevent the surface of the steel from becoming depleted of carbon. The hardening element in this nitro-carburizing operation is nitrogen, which forms iron nitride as Fe3N or Fe4N intragranularly. The purpose of the carbon in the operation is to maintain the concentration of carbon in the surface of the bearing so that the properties are not altered by decarburizing the surface. Standard gaseous and plasma nitriding techniques also may be used for the nitriding operation.

摘要翻译： 一种滚动轴承，其提供由M50钢和M50NiL钢组成的球和滚子轴承元件，其表面硬度高于60HRC，并且在65-72HRC的范围内。 表面区域的硬度是通过对表面进行氮化而实现的，以达到高硬度和延长使用寿命。 通过最小化残余奥氏体的形成来控制合金的微观结构，可以实现这种改进。 材料根据需要回火。 然后将表面氮化，但是精心控制氮化操作以避免形成晶间氮化物。 由于用于防止形成晶间氮化物的方法，可能存在一些碳以防止钢的表面变成碳。 该硝基渗碳操作中的硬化元素是氮，其形成Fe 3 N 3或Fe 4 N N的氮化铁。 操作中的碳的目的是保持轴承表面中碳的浓度，使得通过对表面进行脱碳来改变其性能。 标准的气体和等离子体氮化技术也可用于氮化操作。

公开(公告)号：US20040250931A1

公开(公告)日：2004-12-16

申请号：US10761472

申请日：2004-01-21

申请人： Ellwood National Forge Company

发明人： Morris Dilmore ,  James D. Ruhlman

IPC分类号： C22C038/42 ,  C21D006/00

CPC分类号： C22C38/42 ,  C21D1/18 ,  C21D1/19 ,  C21D1/28 ,  C21D1/58 ,  C21D1/613 ,  C21D1/78 ,  C21D9/16 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46

摘要： The present invention relates to a low alloy, low to medium carbon content, high strength, and high ductility steel composition. The present invention contains relatively low nickel content, yet exhibits high performance characteristics and is manufactured at a substantially lower cost than alloy compositions containing high levels of nickel.

摘要翻译： 本发明涉及低合金，低碳至中碳含量，高强度和高延展性钢组合物。 本发明含有相对较低的镍含量，但表现出高性能特征，并且以比含有高含量镍的合金组合物低得多的成本制造。

公开(公告)号：US20040248657A1

公开(公告)日：2004-12-09

申请号：US10857982

申请日：2004-06-02

申请人： NTN CORPORATION

发明人： Hiroshi Murakami ,  Chikara Ohki

IPC分类号： F16D003/26

CPC分类号： C23C8/32 ,  C21D1/78 ,  C21D9/0068 ,  C21D9/40 ,  C23C8/80 ,  F16D3/2055 ,  Y10S464/905

摘要： To provide a constant velocity universal joint having a high resistance to cracking, a high dimensional stability and an excellent rolling fatigue life, the constant velocity universal joint includes an outer coupling member (5), an inner coupling member such as a tripod member (2), and a drive transmitting member such as rollers (7) operatively interposed between the outer and inner coupling members (5 and 2). At least one of the outer coupling member (5), the tripod member (2) and the rollers (7) has a carbonitrided layer and, at the same time, an austenite grain size is greater than the grade of No. 10.

摘要翻译： 为了提供具有高抗开裂性，高尺寸稳定性和优异的滚动疲劳寿命的等速万向接头，等速万向接头包括外联接构件（5），诸如三脚架构件（2）的内联接构件 ）和可操作地插入在所述外联接构件（5和2）之间的诸如辊（7）的驱动传递构件。 外联接构件（5），三球架构件（2）和滚子（7）中的至少一个具有碳氮共渗层，同时奥氏体晶粒尺寸大于10号的等级。

公开(公告)号：US20040234180A1

公开(公告)日：2004-11-25

申请号：US10787379

申请日：2004-02-27

申请人： KOYO SEIKO CO., LTD.

发明人： Hisashi Harada ,  Hajime Tazumi ,  Michiru Ueda ,  Yukitoshi Murakami

IPC分类号： F16C033/62 ,  F16C033/32

CPC分类号： F16C33/62 ,  C21D1/06 ,  C21D1/18 ,  C21D1/78 ,  C21D9/36 ,  F16C33/30

摘要： A rolling, sliding part is made from a bearing steel, and the rolling, sliding surface thereof has a surface layer portion which is 56 to 64 in Rockwell C hardness, up to 12 vol. % in retained austenite content and 4 to 6 degrees in the X-ray half value width of martensite. Even if made from a common bearing steel, the rolling, sliding part is reduced in the likelihood of developing a WEA or like fatigue structure, consequently exhibiting a prolonged rolling, sliding life for use under severe conditions involving a high temperature, high speed, high load or high vibration.

摘要翻译： 滚动滑动部件由轴承钢制成，其滚动滑动面的表面层部分的洛氏硬度为56〜64，最高为12体积。 残余奥氏体含量为％，马氏体的X射线半值宽度为4〜6度。 即使由普通的轴承钢制成，滚动滑动部件也可能发生WEA或类似的疲劳结构的可能性，从而表现出延长的滚动，在严格条件下使用的滑动寿命，包括高温，高速，高 负载或高振动。

公开(公告)号：US06592685B2

公开(公告)日：2003-07-15

申请号：US10002117

申请日：2001-12-05

申请人： Alkan Goecmen

发明人： Alkan Goecmen

IPC分类号： C22C3842

CPC分类号： C21D1/78 ,  C21D6/004 ,  C22C38/001 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/52

摘要： The invention relates to a transformation controlled nitride precipitation hardening heat-treatable steel with the following composition (data in wt. %): 15-18 Cr, max. 0.5 Mn, 4-10 Ni, max. 15 Co, max. 4 W, max. 4 Mo, 0.5-1 V, at least one of Nb, Ta, Hf and Zr totaling between 0.001-0.1, 0.001-0.05 Ti, max. 0.5 Si, max. 0.05 C, 0.13-0.25 N, max. 4 Cu, rest iron and usual impurities, under the condition that the weight ratio of vanadium to nitrogen V/N is in the range between 3.5 and 4.2. The invention also relates to a heat treatment process for this steel. Very good strength, ductility and also corrosion resistance can be attained.

摘要翻译： 本发明涉及具有以下组成（数据重量％）的转化控制的氮化物沉淀硬化热处理钢：15-18Cr，最大。 0.5 Mn，4-10 Ni，最大 15 Co，max。 最大4 W 4 Mo，0.5-1 V，Nb，Ta，Hf和Zr中的至少一种总计为0.001-0.1，0.001-0.05 Ti， 0.5 Si，最大 0.05 C，0.13-0.25 N，最大 4 Cu，休息铁和常规杂质，条件是钒与氮V / N的重量比在3.5和4.2之间。 本发明还涉及这种钢的热处理工艺。 可以获得非常好的强度，延展性和耐腐蚀性。

公开(公告)号：US06537391B2

公开(公告)日：2003-03-25

申请号：US09878409

申请日：2001-06-12

申请人： Kengo Ishige ,  Tadashi Shibue ,  Tsutomu Kakinouchi ,  Fumimaru Kawabata ,  Osamu Tanigawa ,  Kiyoshi Uchida ,  Junichi Kudou

发明人： Kengo Ishige ,  Tadashi Shibue ,  Tsutomu Kakinouchi ,  Fumimaru Kawabata ,  Osamu Tanigawa ,  Kiyoshi Uchida ,  Junichi Kudou

IPC分类号： C23C3800

CPC分类号： C21D9/42 ,  C21D1/18 ,  C21D1/185 ,  C21D1/78

摘要： A steel has a tensile strength of 850 to 1700 MPa, a yield ratio of at most 80%, and a penetration border energy ratio of at least 2.0 relative to the penetration border energy of a reference steel JIS SS400 (corresponding to ASTM A36) of the same thickness. The steel can be produced by first effecting a heat treatment 1 on an unstable austenitic steel; then effecting, at least once, one or more or any combination of the heat treatment 1 and a heat treatment 2 on the steel; and then finally effecting the heat treatment 2 on the steel. Heat treatment 1 heats the unstable austenitic steel to at least the Ac3 transformation temperature and then water-cools the steel to a temperature below 350° C. Heat treatment 2 heats the steel to a temperature between Ac3 and Ac1 transformation temperatures and then water-cools the steel to a temperature below 350° C.