Rolling bearing
    1.
    发明授权
    Rolling bearing 失效
    滚动轴承

    公开(公告)号:US06051082A

    公开(公告)日:2000-04-18

    申请号:US9688

    申请日:1998-01-20

    摘要: A rolling bearing includes a rolling element made of a steel containing 0.9 to 1.1 wt. % C, 0.1 to 0.5 wt. % Si, 0.2 to 0.8 wt. % Mn, 1.0 to 1.8 wt. % Cr, with the balance being Fe and inevitable impurities. In the rolling bearing at least the surface of the rolling element includes carbides having an area fraction of 5% to 15%; of these carbides, carbides having an averaged particle diameter of 0.5 .mu.m or more share 50% or more of the area fraction of all the carbides; and of the carbides, carbides having an averaged particle diameter of 1 .mu.m or more share 2% or less of the area fraction of all the carbides; and wherein the rolling element has at least a Vickers surface hardness HV of 750 to 900.

    摘要翻译: 滚动轴承包括由含有0.9〜1.1重量%的钢制成的滚动元件。 %C,0.1〜0.5wt。 %Si,0.2〜0.8wt。 %Mn,1.0〜1.8wt。 %Cr,余量为Fe和不可避免的杂质。 在滚动轴承中,至少滚动体的表面包括面积分数为5%〜15%的碳化物; 的这些碳化物,平均粒径为0.5μm以上的碳化物占所有碳化物的面积分率的50%以上; 平均粒径为1μm以上的碳化物,碳化物占所有碳化物的面积分率的2%以下; 并且其中所述滚动元件具有750至900的至少维氏硬度HV。

    Rolling bearings
    3.
    发明授权
    Rolling bearings 失效
    滚动轴承

    公开(公告)号:US5672014A

    公开(公告)日:1997-09-30

    申请号:US536773

    申请日:1995-09-29

    摘要: A rolling bearing has components of an inner race, an outer race and rolling elements, one of the components being formed of an alloy steel containing 0.1-1.0 wt % of C, 0.1-1.5 wt % of Si, 0.1-1.5 wt % of Mn and 0.1-3.0 wt % of Cr, the alloy steel being carbonitrided and then ground to form a surface layer having a carbon and a nitrogen concentration of 0.6-1.5 wt % and 0.05-0.9 wt %, respectively. The surface layer has an appropriate amount of retained austenite .gamma..sub.R and is sufficiently hard to insure long life even under lubrication in the presence of foreign matter. By optimizing the choice of constituent materials, processing methods and heat treatments for each of the rolling elements and the inner and outer races, rolling bearings that have high performance can be produced at low cost.

    摘要翻译: 滚动轴承具有内圈,外圈和滚动元件的部件,其中一个部件由含有0.1-1.0重量%的C,0.1-1.5重量%的Si,0.1-1.5重量%的Si, Mn和0.1-3.0重量%的Cr,合金钢被碳氮共混,然后研磨以形成碳和氮浓度分别为0.6-1.5重量%和0.05-0.9重量%的表面层。 表面层具有合适量的残留奥氏体γR,并且即使在异物存在下的润滑下也足够坚固以确保长寿命。 通过优化各滚动元件和内外圈的构成材料,加工方法和热处理的选择,可以低成本地制造具有高性能的滚动轴承。

    Method of manufacturing rolling bearings
    4.
    发明授权
    Method of manufacturing rolling bearings 有权
    制造滚动轴承的方法

    公开(公告)号:US6101719A

    公开(公告)日:2000-08-15

    申请号:US242817

    申请日:1999-02-25

    摘要: In manufacturing a rolling bearing, at least one component of an inner ring, an outer ring, and a rolling element is manufactured from an alloy steel comprising 0.05 weight %-0.5 weight % carbon, 0.5 weight %-18 weight % chromium, 1.5 weight % or less silicon, 5 weight % or less molybdenum, 4.0 weight % or less vanadium, 4 weight % or less nickel, and 8 weight % or less tungsten, by subjecting the alloy steel to carburizing, hardening and tempering. The carburizing is carried out by vacuum carburization. In the vacuum carburization, carburizing and diffusion are carried out by introducing an acetylene-based carburizing gas in a hot atmosphere under reduced pressure, followed by hardening and tempering. The use of the vacuum carburization enables carburization with the chromium (Cr) content being 3.0 weight % or more, and even up to 18 weight %, which was difficult to achieve with the conventional gas carburization (pre-oxidation+gas carburizing).

    摘要翻译: PCT No.PCT / JP98 / 03782 Sec。 一九九九年二月二十五日 102(e)1999年2月25日PCT PCT 1998年8月26日PCT公布。 公开号WO99 /​​ 10557 日期1999年3月4日在制造滚动轴承时,由含有0.05重量%-0.5重量%碳,0.5重量%-18重量%的合金钢制成内圈,外圈和滚动元件的至少一个部件 铬,1.5重量%以下的硅,5重量%以下的钼,4.0重量%以下的钒,4重量%以下的镍和8重量%以下的钨,通过对合金钢进行渗碳,淬火和回火 。 渗碳是通过真空渗碳进行的。 在真空渗碳中,通过在减压下在热气氛中引入乙炔系渗碳气体进行渗碳扩散,然后硬化和回火。 使用真空渗碳可以使铬(Cr)含量为3.0重量%以上,甚至高达18重量%的渗碳,这是常规的气体渗碳(预氧化+气体渗碳)难以实现的。

    Rolling bearing and heat treatment method therefor
    5.
    发明授权
    Rolling bearing and heat treatment method therefor 失效
    滚动轴承及其热处理方法

    公开(公告)号:US06325867B1

    公开(公告)日:2001-12-04

    申请号:US08251575

    申请日:1994-05-31

    IPC分类号: C23C834

    摘要: A rolling bearing contains no more than 0.3 wt % of nitrogen in a grinding allowance portion after carbonitriding and hardening heat treatments, contains from 0.9 wt % (inclusive) up to 1.6 wt % (inclusive) of carbon and from 0.05 wt % (inclusive) up to 0.3 wt % (inclusive) of nitrogen in the surface layer of the finished part and has a nitrogen gradient of no more than 0.5 wt %/mm in the surface layer of the finished part. The rolling bearings are improved in grinding efficiency and which have their rolling life extended significantly.

    摘要翻译: 在碳氮共渗和硬化热处理之后,滚动轴承在研磨余量部分中含有不超过0.3重量%的氮,含有0.9重量%(含)至1.6重量%(含)的碳和0.05重量%(含) 在最终部件的表层中最多含有0.3重量%(含氮)氮,并且在成品部件的表面层中具有不超过0.5重量%/ mm 3的氮梯度。 滚动轴承的研磨效率提高,滚动寿命显着延长。

    Method of manufacturing inner and outer races of deep groove ball bearing in continuous annealing furnace
    6.
    发明授权
    Method of manufacturing inner and outer races of deep groove ball bearing in continuous annealing furnace 有权
    连续退火炉,滚子轴承,退火方法以及用于制造深沟球轴承的内圈和外圈的方法

    公开(公告)号:US06620262B1

    公开(公告)日:2003-09-16

    申请号:US09380227

    申请日:1999-08-25

    IPC分类号: C23C822

    摘要: The continuous annealing furnace has two or more treatment chambers sequentially connected with each other and respectively filled with a gas atmosphere differing in carburizing property, which includes a carburizing chamber wherein roller members to be treated are carburized at 750° C. to 820° C., a slow cooling chamber wherein the roller members are cooled at said temperature or less of the carburizing chamber, an intermediate chamber including atmosphere gas blocking doors that can open/close an exit of the carburizing chamber and an entrance of the slow cooling chamber independently, and transferring means, and each chambers is filled to satisfy a relationship of K1−K2≧2 where K1 represents a partial pressure ratio between CO and CO2 in an atmosphere within the carburizing chamber and K2 represents a partial pressure ratio between CO and CO2 in an atmosphere within the slow cooling chamber.

    摘要翻译: 连续退火炉具有两个或更多个处理室,它们相互连接并分别填充有不同渗碳性能的气体气氛,其包括渗碳室,其中待处理的辊构件在750℃至820℃下渗碳。 ,缓慢冷却室,其中辊构件在渗碳室的所述温度或更低温度下被冷却,包括可以独立地打开/关闭渗碳室的出口和缓慢冷却室的入口的气氛阻塞门的中间室, 和转移装置,并且每个室被填充以满足K1-K2> = 2的关系,其中K1表示渗碳室内的气氛中CO和CO 2之间的分压比,K2表示CO和CO 2之间的分压比 缓慢冷却室内的气氛。

    Rolling bearing
    7.
    发明授权
    Rolling bearing 有权
    滚动轴承

    公开(公告)号:US06770152B1

    公开(公告)日:2004-08-03

    申请号:US09830212

    申请日:2001-04-24

    IPC分类号: C22C3822

    摘要: The present invention provides a rolling bearing having high wear resistance at high temperature and with reduced manufacturing cost. At least one of an inner ring, an outer ring and rolling elements is formed of the following steel material into a predetermined shape, then applied with hardening and tempering at a temperature of 240° C. or higher or 350° C. or lower to make the Vickers hardness (Hv) on the raceway surface and/or rolling surface to 720 or more. The steel material contains, as the alloy ingredient, 0.8% by weight or more and 1.2% by weight or less of C, 0.5% by weight or more and 2.5% by weight or less of Si, 0.7% by weight or more and 1.5% by weight or less of Cr, 0.8% by weight or more and 2.0% by weight or less of Mo and 0.3% by weight or more and 1.2% by weight or less of Mn, with a ratio of Mo to Cr (Mo/Cr: weight ratio) of 1.1 or more.

    摘要翻译: 本发明提供一种在高温下具有高耐磨性且降低制造成本的滚动轴承。 内圈,外圈和滚动元件中的至少一个由以下钢材形成为预定形状,然后在240℃以上或350℃以下的温度下进行淬火回火 使维氏硬度(Hv)在滚道表面和/或滚动面上达到720以上。 钢材含有0.8重量%以上且1.2重量%以下的C,0.5重量%以上且2.5重量%以下的Si,0.7重量%以上且1.5以下 重量%以下的Cr,0.8重量%以上且2.0重量%以下的Mo和0.3重量%以上且1.2重量%以下的Mn,Mo与Cr的比例(Mo / Cr:重量比)为1.1以上。

    Method and apparatus for correcting the hardening deformation of annular
elements
    8.
    发明授权
    Method and apparatus for correcting the hardening deformation of annular elements 失效
    用于校正环形元件硬化变形的方法和装置

    公开(公告)号:US5660650A

    公开(公告)日:1997-08-26

    申请号:US575523

    申请日:1995-12-20

    CPC分类号: C21D8/10 C21D9/40 C21D1/00

    摘要: In a method and an apparatus for correcting a hardening deformation of an annular element made out of steel, during the cooling stage of hardening, the annular element which still has an austenitic structure is subjected to working on either the outside or inside diameter, with the degree of working being 0.05-1.0% if it is on the outside diameter with the annular element being pressed into a mold, and 0.5-3.0% if the working is on the inside diameter. Thus the deformation that develops in annular steel elements due to heat treatments is effectively corrected to yield completely round, strain-free or deformation-free annular elements.

    摘要翻译: 在用于校正由钢制成的环形元件的硬化变形的方法和装置中,在硬化冷却阶段期间,仍然具有奥氏体结构的环形元件在外径或内径上进行加工, 如果环形元件被压入模具中,其在外径上的工作程度为0.05-1.0%,如果工作在内径上,工作程度为0.5-3.0%。 因此,由于热处理而在环形钢元件中产生的变形被有效地校正,以产生完全圆形,无应变或无变形的环形元件。

    Strength evaluating method for aluminum die cast part, aluminum die cast part, and defect detecting method for the same
    9.
    发明授权
    Strength evaluating method for aluminum die cast part, aluminum die cast part, and defect detecting method for the same 有权
    铝压铸件的强度评估方法,铝压铸件及其缺陷检测方法

    公开(公告)号:US09383343B2

    公开(公告)日:2016-07-05

    申请号:US13581185

    申请日:2011-10-28

    摘要: There is provided an aluminum die cast part strength evaluating method is provided for correctly evaluating strength of an actual aluminum die cast part. Strength of the actual aluminum die cast part will be correctly evaluated by conducting ultrasonic inspection of a predetermined range of a high stress region of an aluminum die cast part, which is found out through stress analysis beforehand, for an internal defect, and evaluating that the aluminum die cast part has a predetermined strength if the maximum internal defect area within the predetermined range is equal to or less than a predetermined value. Moreover, an actual aluminum die cast part with a predetermined strength will be evaluated correctly by: evaluating strength using the aluminum die cast part strength evaluating method and setting the maximum-possible internal defect area within the predetermined range of the high stress region to 0.8 mm2 or less.

    摘要翻译: 提供了一种用于正确评估实际铝压铸件的强度的铝压铸部件强度评估方法。 对于内部缺陷,通过预先通过应力分析发现的铝压铸件的高应力区域的预定范围的超声波检查来对实际的铝压铸部件的强度进行正确评价, 如果在预定范围内的最大内部缺陷面积等于或小于预定值,则铝压铸件具有预定的强度。 此外,通过以下方式,可以正确地评价具有规定强度的实际的铝压铸部件:使用铝压铸部件强度评价方法评价强度,将高应力区域的规定范围内的最大可能的内部缺陷面积设定为0.8mm 2 或更少。