HIGH SURFACE COMPRESSIVE STRESS FOR THROUGH HARDENING

    公开(公告)号:WO2020106319A1

    公开(公告)日:2020-05-28

    申请号:PCT/US2019/027343

    申请日:2019-04-12

    摘要: A heat treatment process for through hardening results in high surface compressive stresses. The method includes heating a steel component to a first temperature, quenching the steel component to a second temperature, maintaining the steel component at the second temperature for a first duration of time, heating the steel component to a third temperature, maintaining the steel component at the third temperature for a second duration of time, and quenching the steel component to a fourth temperature when austenite to martensite+bainite or bainite transformation is at least 10% but less than 85% complete.

    METHOD OF HEAT TREATMENT OF BEARING STEEL
    2.
    发明申请
    METHOD OF HEAT TREATMENT OF BEARING STEEL 审中-公开
    轴承热处理方法

    公开(公告)号:WO2015188796A4

    公开(公告)日:2017-03-02

    申请号:PCT/CZ2015000060

    申请日:2015-06-11

    申请人: COMTES FHT AS

    摘要: This heat treatment of bearing steel comprises annealing and hardening. Hardening is carried out after annealing and after the manufacture of structural parts from this steel. The first part of the annealing process is heating of the steel at a rate of more than 1 °C/s to a temperature in the range between 750 °C and 900 °C. It is followed by holding at the temperature achieved for at least 400 seconds. This is followed by cooling at a rate higher than 0.02 °C/s to a temperature, at which austenite begins to transform to ferrite and carbides. In the next step, there is cooling to such temperature and at such rate that complete transformation of austenite to ferrite and carbides takes place at least in the desired location of the steel. The cycle of heating, holding and cooling is carried out at least once. Then the steel is cooled to the ambient temperature. In the preferred embodiment, the quenching temperature during subsequent hardening is lower than the quenching temperature of the conventionally annealed steel in question. The steel may be heated by induction.

    摘要翻译: 轴承钢的热处理包括退火和硬化。 在退火后和在该钢的结构部件的制造之后进行硬化。 退火过程的第一部分是将钢以大于1℃/ s的速率加热到750℃和900℃之间的温度。 然后保持达到至少400秒的温度。 然后以高于0.02℃/ s的速度冷却至奥氏体开始转变为铁素体和碳化物的温度。 在下一步骤中,将冷却至这样的温度,至少在钢的期望位置上发生奥氏体完全转变为铁素体和碳化物的速率。 加热,保持和冷却的循环至少进行一次。 然后将钢冷却至环境温度。 在优选实施例中,随后硬化​​期间的淬火温度低于所讨论的常规退火钢的淬火温度。 钢可以通过感应加热。

    METHODS AND APPARATUS FOR METAL STRUCTURE FABRICATION

    公开(公告)号:WO2022056044A1

    公开(公告)日:2022-03-17

    申请号:PCT/US2021/049533

    申请日:2021-09-08

    申请人: MCWEENEY, Gerard

    发明人: MCWEENEY, Gerard

    IPC分类号: C21D1/78 C21D9/50

    摘要: Disclosed is a temporary and mobile apparatus and methods for manufacturing welded products, including pressure vessels, wherein heating and/or cooling is to be applied to substrate material of the weld site. Certain embodiments include panels arranged to form a convection section that allows for improved heating and cooling of substrates and provide improved welding processes. Embodiments can include a manifold along used for heating and cooling. Apparatuses and methods of using making those apparatuses for improved welding are described herein.

    WERKZEUGSTAHL FÜR KALTARBEITS- UND SCHNELLARBEITSANWENDUNGEN

    公开(公告)号:WO2021032893A1

    公开(公告)日:2021-02-25

    申请号:PCT/EP2020/073652

    申请日:2020-08-24

    摘要: Die Erfindung betrifft ein Verfahren zum Herstellen eines Werkzeugstahls für Kaltarbeits- und Warmarbeitsanwendungen, wobei ein Stahlmaterial bestehend aus folgenden Legierungselementen: (alle Angaben in Gew.-%): Kohlenstoff = 1,50 bis 2,50; Silizium = 0,25 bis 1,0; Mn = 0,10 bis 1,0; Cr = 4,0 bis 7; W = 12 bis 16; Mo = 1,0 bis 5,0; V = 3,0 bis 7,0; Co = 6,0 bis 8,0; Rest Eisen und erschmelzungsbedingte unvermeidliche Verunreinigungen erschmolzen und durch Verdüsen zu einem Pulver verarbeitet wird und das Pulver anschließend heiß-isostatisch gepresst oder dreidimensional verdruckt wird und das heiß-isostatische Pulver anschließend gegebenenfalls mechanisch bearbeitet wird, wobei eine Wärmebehandlung folgt, wobei die Wärmebehandlung so durchgeführt wird, dass das Material zunächst auf eine Härtetemperatur von 1170 °C - 1190 °C im Kern erwärmt wird, danach für 60 bis 300 Sekunden bevorzugt 100 bis 200 Sekunden auf dieser Härtetemperatur gehalten und danach mit einer Abkühlrate von λ

    WÄLZLAGERUNG
    8.
    发明申请
    WÄLZLAGERUNG 审中-公开
    滚子轴承

    公开(公告)号:WO2007014642A1

    公开(公告)日:2007-02-08

    申请号:PCT/EP2006/007129

    申请日:2006-07-20

    IPC分类号: F16C33/30 C21D1/78

    CPC分类号: F16C33/62 F16C2240/18

    摘要: Bei einer Wälzlagerung einer zum Antrieb durch einen Hauptantrieb eines Fahrzeugs vorgesehenen Welle eines Nebenaggregats des Fahrzeugs mit wenigstens einer Laufbahnoberfläche für Wälzkörper der Wälzlagerung ist wenigstens eine Schicht unmittelbar unter der Laufbahnoberfläche mit einem bainitischen Gefüge ausgebildet.

    摘要翻译: 在用于驱动由车辆中,车辆的与用于滚动元件轴承的至少一个层的滚动元件的至少一个滚道表面的辅助单元的主驱动轴的滚动轴承形成立即滚道表面下方具有贝氏体结构。

    METHOD FOR PRODUCING A SHAFT PERTAINING TO A STARTER
    9.
    发明申请
    METHOD FOR PRODUCING A SHAFT PERTAINING TO A STARTER 审中-公开
    用于生产针对起动机的轴的方法

    公开(公告)号:WO2005113841A3

    公开(公告)日:2006-05-04

    申请号:PCT/FR2005001258

    申请日:2005-05-19

    发明人: BERTHOD CELINE

    摘要: The invention relates to a method for producing a shaft (10) comprising a first section, a second channelled section, and a third section (T3) provided with an abutment shoulder surface (22) for the starter, said method comprising the following steps: a) said three sections are machined; b) external grooves are produced in the second section; and c) at least one axial part of the starter shaft (10) is subjected to a surface heating treatment. The invention is characterised in that the method comprises an additional step, prior to the heating treatment step, for reducing the residual mechanical stresses resulting from steps preceding the heating treatment. Said additional step is a step for annealing, especially by induction heating, at least one axial part (18-22, T3) of the starter (10).

    摘要翻译: 本发明涉及一种用于制造轴(10)的方法,所述轴(10)包括第一部分,第二通道部分和具有用于起动器的邻接台肩表面(22)的第三部分(T3),所述方法包括以下步骤: a)说三段加工; b)在第二部分中产生外部凹槽; 和c)起动轴(10)的至少一个轴向部分进行表面加热处理。 本发明的特征在于,该方法包括在加热处理步骤之前的另外的步骤,用于减少由加热处理之前的步骤产生的残余机械应力。 所述附加步骤是用于退火的步骤,特别是通过感应加热,起动器(10)的至少一个轴向部分(18-22,T3)。

    APPARATUS AND METHOD FOR STRENGTHENING ARTICLES OF MANUFACTURE THROUGH CRYOGENIC THERMAL CYCLING
    10.
    发明申请
    APPARATUS AND METHOD FOR STRENGTHENING ARTICLES OF MANUFACTURE THROUGH CRYOGENIC THERMAL CYCLING 审中-公开
    通过低温热循环强化制造品的装置和方法

    公开(公告)号:WO02014758A1

    公开(公告)日:2002-02-21

    申请号:PCT/US2001/025639

    申请日:2001-08-16

    摘要: An apparatus (10) for subjecting articles of manufacture to a cryogenic thermal cycling process includes a bottom portion (11) and a lid (28). The bottom portion (11) comprises an outer and inner tank (12 and 14) respectively separated by a plurality of insulation layers. The inner tank (14) defines an inner cavity (29) wherein the articles are subjected to the cryogenic process. A thermal break is provided between the lid (28) and bottom portion (11) so that the temperature of the inner cavity (29) does not conduct to the outer tank (12) of the apparatus bottom portion (11). The process conducted in the apparatus (10) is controlled by a pre-progammed profile inputted by a key controller (124) or PC. Liquid nitrogen is the preferred cryogenic material to be employed. The novel process subjects the article to extreme negative temperatures for a number of cycles. The process is completed by heating the article to an extreme positive temperature and then allowed to cool to ambient room temperature. The novel cryogenic thermal cycling process strengthens the article by realigning its molecular structure to eliminate micro-cracking and other manufacturing deforming characteristics.

    摘要翻译: 用于使制造品进行低温热循环过程的装置(10)包括底部部分(11)和盖子(28)。 底部(11)包括分别由多个绝缘层分隔开的外罐和内箱(12和14)。 内罐(14)限定内部空腔(29),其中制品经受低温处理。 在盖(28)和底部(11)之间设置热断裂,使得内腔(29)的温度不会传导到装置底部(11)的外罐(12)。 在装置(10)中进行的处理由由键控制器(124)或PC输入的预编程配置文件来控制。 液氮是所用的优选低温材料。 该新型工艺使制品在极端的负温度下进行多个循环。 该过程通过将制品加热至极端正温度然后冷却至环境室温来完成。 新型低温热循环工艺通过重新分配其分子结构来加强制品,消除微裂纹等制造变形特性。