ROLLED ROUND STEEL MATERIAL FOR STEERING RACK BAR, AND STEERING RACK BAR
    21.
    发明申请
    ROLLED ROUND STEEL MATERIAL FOR STEERING RACK BAR, AND STEERING RACK BAR 有权
    用于转向架条的滚动钢材和转向架条

    公开(公告)号:US20160186300A1

    公开(公告)日:2016-06-30

    申请号:US14911804

    申请日:2014-06-18

    摘要: A rolled round steel material for a steering rack bar contains C in an amount of 0.38 to 0.55%, Si in an amount of 1.0% or less, Mn in an amount of 0.20 to 2.0%, S in an amount of 0.005 to 0.10%, Cr in an amount of 0.01 to 2.0%, Al in an amount of 0.003 to 0.10%, B in an amount of 0.0005 to 0.0030%, Ti in an amount of 0.047% or less, Cu in an amount of 0 to 1.0%, Ni in an amount of 0 to 3.0%, Mo in an amount of 0 to 0.50%, Nb in an amount of 0 to 0.10%, V in an amount of 0 to 0.30%, Ca in an amount of 0 to 0.005%, and Pb in an amount of 0 to 0.30%, a remaining portion being constituted by Fe and an impurities, the impurities containing P in an amount of 0.030% or less and N in an amount of 0.008% or less, and has a chemical composition satisfying [3.4N≦Ti≦3.4N+0.02]. The microstructure is constituted by ferrite (F), lamellar pearlite (LP), and cementite (C), and in the latitudinal cross-section, in a region extending from a surface to a position located a distance of ½ the radius therefrom, the average particle diameter of F is 10 μm or less, the area percentage of LP is less than 20%, and the number of pieces of spheroidal cementite (SC) in C is 4×105 pieces/mm2 or more, and, in a central portion, the area percentage of LP is 20% or more and the number of pieces of SC is less than 4×105 pieces/mm2, and in the longitudinal cross-section, the average aspect ratio of F in a region extending from a surface to a position located a distance of ½ the radius therefrom is 3 or more. This steel material has a high base material toughness and good machinability without performing thermal refining.

    摘要翻译: 用于转向齿条的轧制圆钢材料含有C为0.38〜0.55%,Si为1.0%以下,Mn为0.20〜2.0%,S为0.005〜0.10% ,0.01〜2.0%的Cr,0.003〜0.10%的Al,0.0005〜0.0030%的B,0.047%以下的Ti,0〜1.0%的Cu, ,0〜3.0%的Ni,0〜0.50%的Mo,0〜0.10%的Nb,0〜0.30%的V,0〜0.005%的Ca, ,Pb为0〜0.30%,余量由Fe和杂质构成,杂质含量为0.030%以下,N为0.008%以下,含有化学物质 组成满足[3.4N≦̸ Ti≦̸ 3.4N + 0.02]。 微结构由铁素体(F),层状珠光体(LP)和渗碳体(C)构成,并且在横截面中,从表面延伸到位于半径的1/2的位置的区域中, F的平均粒径为10μm以下,LP的面积率小于20%,C中的球状渗碳体(SC)的片数为4×10 5个/ mm 2以上,在中央 部分,LP的面积百分比为20%以上,SC的片数少于4×105个/ mm 2,纵向剖面中,从表面延伸的区域的F的平均长宽比 位于其半径的1/2的距离处的位置为3以上。 该钢材具有高基材韧性和良好的机械加工性,而不进行热精炼。

    Method and apparatus for non-contact surface enhancement
    23.
    发明授权
    Method and apparatus for non-contact surface enhancement 有权
    用于非接触表面增强的方法和装置

    公开(公告)号:US09365908B2

    公开(公告)日:2016-06-14

    申请号:US13605471

    申请日:2012-09-06

    IPC分类号: C21D7/06 C21D1/09

    CPC分类号: C21D1/09 C21D7/06

    摘要: Systems and methods to generate beneficial residual stresses in a material, clean, strip coatings from, or roughen surfaces by generating cavitation shock waves without damaging the surface of the material. Shock waves emanate through the target material from collapsing cavitation voids in and around a liquid jet to generate residual stresses without impinging the jet against the material, or by impinging the material at shallow angles, and without significantly damaging or deforming the surface of the target material.

    摘要翻译: 通过产生气蚀冲击波而不损坏材料的表面,在材料中产生有益的残余应力,清洁,剥离或粗糙表面的系统和方法。 冲击波通过目标材料从液体射流中和周围的塌陷空化空穴中产生,以产生残余应力,而不会将射流撞击材料,或通过以较小的角度撞击材料,并且不会使靶材料的表面明显损坏或变形 。

    Method for setting shot-peening process condition
    25.
    发明授权
    Method for setting shot-peening process condition 有权
    设定喷丸处理条件的方法

    公开(公告)号:US09289880B2

    公开(公告)日:2016-03-22

    申请号:US13254760

    申请日:2010-01-29

    IPC分类号: B24C1/10 B24C7/00 C21D7/06

    摘要: A method for setting a shot-peening process condition includes a step of obtaining, for each of a plurality of peening conditions for a first combination as a combination of a shot peening processing apparatus and media, a saturation time based on a saturation curve indicating a change in an arc height value of an Almen strip against a projection time. The method includes a step of determining a first optimum peening condition corresponding to the first combination based on the saturation time.

    摘要翻译: 用于设置喷丸处理条件的方法包括以下步骤:针对作为喷丸硬化处理装置和介质的组合的第一组合的多个喷丸条件中的每一个获得饱和时间,该饱和时间基于表示 在投影时间内改变Almen条的弧高值。 该方法包括基于饱和时间确定与第一组合相对应的第一最佳喷丸条件的步骤。

    Application of the newly developed technology in stainless steel for biomedical implant
    26.
    发明申请
    Application of the newly developed technology in stainless steel for biomedical implant 有权
    新开发的技术应用于不锈钢生物医用植入物

    公开(公告)号:US20160031063A1

    公开(公告)日:2016-02-04

    申请号:US14534177

    申请日:2015-01-05

    发明人: Jian LU Huaiyu WANG

    IPC分类号: B24C1/10

    摘要: The present invention pertains to a method of applying surface mechanical attrition treatment (SMAT) with a plurality of balls for treating surfaces of metallic alloys under a set of specific conditions in order to obtain a metal substrate with high yield strength and hardness, low cytotoxicity, high cytocompability and hemocompatibility suitable for medical implant. The plurality of balls used in the present invention comprises 316L stainless steel balls or zirconium oxide (ZrO2) balls.

    摘要翻译: 本发明涉及一种用特定条件的金属合金表面处理多个球的表面机械磨耗处理(SMAT)的方法,以获得具有高屈服强度和硬度,低细胞毒性的金属基材, 适用于医疗植入物的高细胞可比性和血液相容性。 本发明中使用的多个球包括316L不锈钢球或氧化锆(ZrO 2)球。

    Method of treating surface of mold
    28.
    发明授权
    Method of treating surface of mold 有权
    处理模具表面的方法

    公开(公告)号:US09156131B2

    公开(公告)日:2015-10-13

    申请号:US14508426

    申请日:2014-10-07

    发明人: Keiji Mase

    摘要: Provided is a method of treating a surface of a mold to achieve good demoldability and capable of preventing wearing of the mold by avoiding load concentration on one part of the surface of the mold. After a first blasting is performed on the surface of the mold to remove a hardened layer produced on the surface and/or to adjust the surface roughness, a second blasting is performed to create fine irregularities on the surface. Then, an elastic abrasive in which abrasive grains are carried on an elastic body, or a plate-like abrasive having a planar shape with a maximum length that is 1.5 to 100 times the thickness thereof, is ejected onto the surface of the mold at an inclined ejection angle such that the abrasive is caused to slide along the mold surface to flatten peaks of the irregularities created on the mold surface.

    摘要翻译: 提供了一种处理模具的表面以获得良好的脱模性并且能够通过避免模具的一个表面上的载荷集中而防止模具磨损的方法。 在模具的表面进行第一次喷砂以除去在表面上产生的硬化层和/或调整表面粗糙度之后,进行第二次喷砂以在表面上产生细微的凹凸。 然后,在弹性体上承载磨粒的弹性磨料,或者具有最大长度为其厚度的1.5〜100倍的平面形状的板状研磨剂,以模具的表面喷射到模具的表面上 倾斜的喷射角度使得研磨剂沿着模具表面滑动以使在模具表面上产生的凹凸的峰值变平。

    Method of treating surface of mold and mold having surface treated by said method
    29.
    发明授权
    Method of treating surface of mold and mold having surface treated by said method 有权
    通过所述方法处理表面处理的模具和模具表面的方法

    公开(公告)号:US09108298B2

    公开(公告)日:2015-08-18

    申请号:US13187918

    申请日:2011-07-21

    申请人: Keiji Mase

    发明人: Keiji Mase

    摘要: Provided is a method of treating a surface of a mold to achieve good demoldability and capable of preventing wearing of the mold by avoiding load concentration on one part of the surface of the mold. After a first blasting is performed on the surface of the mold to remove a hardened layer produced on the surface and/or to adjust the surface roughness, a second blasting is performed to create fine irregularities on the surface. Then, an elastic abrasive in which abrasive grains are carried on an elastic body, or a plate-like abrasive having a planar shape with a maximum length that is 1.5 to 100 times the thickness thereof, is ejected onto the surface of the mold at an inclined ejection angle such that the abrasive is caused to slide along the mold surface to flatten peaks of the irregularities created on the mold surface.

    摘要翻译: 提供了一种处理模具的表面以获得良好的脱模性并且能够通过避免模具的一个表面上的载荷集中而防止模具磨损的方法。 在模具的表面进行第一次喷砂以除去在表面上产生的硬化层和/或调整表面粗糙度之后,进行第二次喷砂以在表面上产生细微的凹凸。 然后,在弹性体上承载磨粒的弹性磨料,或者具有最大长度为其厚度的1.5〜100倍的平面形状的板状研磨剂,以模具的表面喷射到模具的表面上 倾斜的喷射角度使得研磨剂沿着模具表面滑动以使在模具表面上产生的凹凸的峰值变平。

    Method for producing carbonitrided member
    30.
    发明授权
    Method for producing carbonitrided member 有权
    生产碳氮共渗构件的方法

    公开(公告)号:US09062364B2

    公开(公告)日:2015-06-23

    申请号:US13415198

    申请日:2012-03-08

    摘要: A method for producing a carbonitrided member comprising the steps of carburizing a steel part having a composition of, by mass percent, C: 0.10 to 0.35%, Si: 0.15 to 1.0%, Mn: 0.30 to 1.0%, Cr: 0.40 to 2.0%, S: 0.05% or less with the balance being Fe and impurities in a carburizing atmosphere of 900 to 950° C. The carburized steel part is carbonitrided in a carbonitriding atmosphere with the temperature of 800 to 900° C. and the nitrogen potential of 0.2 to 0.6%. The carbonitrided steel part is qhenched and then shot peened. The shot peening treatment may be further performed while heating to a temperature not higher than 350° C. or immediately after heating to a temperature not higher than 350° C. After quenching, the shot peening treatment may be further performed after tempering in the temperature range exceeding 250° C. and not higher than 350° C.

    摘要翻译: 碳氮共渗构件的制造方法,其特征在于,将以质量%计含有C:0.10〜0.35%,Si:0.15〜1.0%,Mn:0.30〜1.0%,Cr:0.40〜2.0 %,S:0.05%以下,余量为渗碳气氛中的Fe和杂质为900〜950℃。渗碳钢部分在碳氮共渗气氛中碳氮共混,温度为800〜900℃,氮势 为0.2〜0.6%。 将碳氮共渗钢部分进行复层,然后喷丸硬化。 可以在加热至不高于350℃的温度或加热至不高于350℃的温度之后进一步进行喷丸硬化处理。淬火后,可以在温度回火之后进一步进行喷丸硬化处理 范围超过250℃,不高于350℃