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    • 46. 发明申请
    • Rolling bearing and heat treatment method for steel
    • 钢的滚动轴承和热处理方法
    • US20070169850A1
    • 2007-07-26
    • US10586299
    • 2005-01-11
    • Chikara OhkiKohei Fujita
    • Chikara OhkiKohei Fujita
    • C23C8/00C23C22/00
    • C22C38/18C21D1/18C21D1/78C21D9/36C21D9/40C22C38/02C22C38/04C23C8/26F16C33/30F16C33/62F16C33/64F16C2240/90
    • There is provided a rolling bearing which has long life against rolling fatigue and exhibits no decrease in fracture strength and no increase in rate of dimensional change over time, even if the part size thereof is large, and which can obtain higher strength by crystal grains being further refined, if it has a size equal to or smaller than a prescribed size. The rolling bearing according to the present invention includes a race and a rolling element. At least one member of the race and the rolling element has a nitrogen-enriched layer in its surface layer, and a surface layer portion contains austenite crystal grains having a grain size number of at least 11. The member has hardenability allowing a position exhibiting HRC50 in a hardenability test method for steel to be apart from a quenched end by a distance of at least 12.7 mm ( 8/16 inch).
    • 提供了一种滚动轴承,其寿命长于滚动疲劳,即使部件尺寸大,断裂强度也不降低,尺寸变化率也没有增加,并且可以通过晶粒获得更高的强度 进一步细化,如果其尺寸等于或小于规定尺寸。 根据本发明的滚动轴承包括座圈和滚动元件。 该种族和滚动体的至少一个构件在其表面层中具有富氮层,表层部分含有晶粒数至少为11的奥氏体晶粒。该构件具有淬透性,允许显示HRC50的位置 在淬硬性试验方法中,钢的淬火端距离至少12.7mm(8/16英寸)。
    • 50. 发明申请
    • Cemented carbide insert for toughness demanding short hole drilling operations
    • 硬质合金刀片,用于韧性要求短孔钻孔作业
    • US20060286410A1
    • 2006-12-21
    • US11343202
    • 2006-01-31
    • Mats AhlgrenJan KjellgrenTorbjorn Agren
    • Mats AhlgrenJan KjellgrenTorbjorn Agren
    • B32B9/00B05D3/00C23C8/00
    • C23C14/0641C23C30/005
    • The present invention relates to a coated cutting insert with excellent toughness properties particularly useful for toughness demanding short hole drilling in low alloy and stainless steels and a method of making the same. The inserts comprise a substrate and a coating. The substrate comprises WC, from about 8 to about 11 wt-% Co and from about 0.2 to about 0.5 wt-% Cr with an average WC-grain size of from about 0.5 to about 1.5 μm and a CW-ratio of from about 0.80 to about 0.90. The coating comprises a laminar, multilayered structure of TiN+Ti1-xAlxN+TiN+Ti1-xAlxN+TiN . . . in polycrystalline, non-repetitive form, with x being from about 0.4 to about 0.6 with a thickness of the individual TiN—or Ti1-xAlxN-layers of from about 1 to about 30 nm varying essentially at random and with a total thickness of the multilayered coating of from about 1 to about 5 μm. The layers are deposited using arc evaporation technique.
    • 本发明涉及一种具有优异韧性的涂层切削刀片及其制造方法,特别适用于要求在低合金和不锈钢中短孔钻削的韧性。 刀片包括基底和涂层。 基体包括WC,约8至约11重量%的Co和约0.2至约0.5重量%的Cr,平均WC晶粒尺寸为约0.5至约1.5微米,CW比为约0.80 至约0.90。 该涂层包括TiN + Ti 1-x Al x N + TiN + Ti 1-x Al 2 O 3的层状多层结构 x N + TiN。 。 。 多晶,非重复形式,其中x为约0.4至约0.6,单个TiN-或Ti 1-x Al 2 N层的厚度为 约1至约30nm,基本上随机变化,多层涂层的总厚度为约1至约5μm。 使用电弧蒸发技术沉积这些层。