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    • 4. 发明授权
    • Process for producing connecting rod
    • 连杆生产工艺
    • US5905939A
    • 1999-05-18
    • US888010
    • 1997-07-03
    • Zenzo IshijimaJunichi IchikawaSyuji SasakiJun SakaiHideo ShikataHideo Urata
    • Zenzo IshijimaJunichi IchikawaSyuji SasakiJun SakaiHideo ShikataHideo Urata
    • F16C7/02B21K1/14B22F3/12B22F5/00B23D31/00F16C9/04B22F3/24
    • B22F5/003B23D31/003F16C7/023F16C9/045
    • There is provided a connecting rod including a connecting rod body and a cap having excellent alignment properties, and a method of producing such a connecting rod. A connecting rod body and a cap are produced through the steps of molding green compacts respectively corresponding to the connecting rod body and the cap; sintering and unifying both the green compacts; forging the resultant sintered product in a mold; and fracturing the resultant forged product. The green compact corresponding to the cap and/or the green compact corresponding to the connecting rod body includes opposite circumferential end faces formed with one or more projection. A clearance c is formed between both circumferential end faces of the sintered product due to the projection. With this clearance c, both the circumferential end faces are formed with recesses and projections which are fitted to each other during the forging process and which are relatively large and thus have large biting amounts. During the fracturing process, the recesses and the projections are separated into two pieces.
    • 提供了一种连杆,包括具有优良对准性能的连杆主体和盖,以及制造这种连杆的方法。 通过分别对应于连杆主体和盖的成型压坯的步骤来制造连杆体和盖, 烧结并统一生坯; 将所得烧结产品锻造在模具中; 并破碎所得的锻造产品。 对应于与连杆主体相对应的盖和/或生坯的生坯具有形成有一个或多个突起的相对的周向端面。 由于突起,在烧结体的两个周向端面之间形成有间隙c。 利用该间隙c,两个周向端面形成有在锻造过程中彼此相配合并且相对较大并因此具有大的咬入量的凹部和突起。 在压裂过程中,凹槽和突起被分成两部分。
    • 10. 发明授权
    • Method for producing ferrous sintered alloy having quenched structure
    • 制备具有淬火结构的铁基烧结合金的方法
    • US5682588A
    • 1997-10-28
    • US716744
    • 1996-09-23
    • Tadayuki TsutsuiKei IshiiHideo ShikataSumihisa Kotani
    • Tadayuki TsutsuiKei IshiiHideo ShikataSumihisa Kotani
    • B22F3/10C22C33/02C22C38/00C22C38/22B22F3/12
    • C22C33/0207C22C33/0257
    • The present invention relates to a method for producing, without quench-hardening process, a ferrous sintered alloy having satisfactory strength which is equal to that of the conventional ferrous sintered quenched material, and the method comprises the steps of: preparing a powder mixture by adding, in weight ratios, 1 to 2% of copper powder, 1 to 3% of Ni powder, and graphite to a ferrous alloy powder consisting of 3 to 5% of Ni, 0.4 to 0.7% of Mo, and the remainder Fe, the quantity of said graphite being determined such that the C-content after sintering is 0.2 to 0.7%; compacting said powder mixture in a tool to form a green compact; sintering said green compact in a non-oxidizing atmosphere at a temperature in the range of 1130.degree. to 1230.degree. C.; and cooling the sintered product in the sintering furnace at a rate of 5.degree. C./min. to 20.degree. C./min.
    • 本发明涉及一种不用淬火硬化工艺生产具有令人满意的强度的铁质烧结合金的方法,其等同于常规的铁烧结淬火材料,该方法包括以下步骤:通过加入 的重量比,1〜2%的铜粉,1〜​​3%的Ni粉,以及石墨与由3〜5%的Ni,0.4〜0.7%的Mo组成的铁合金粉末,其余为Fe, 确定所述石墨的量,使得烧结后的C含量为0.2〜0.7%; 在工具中压实所述粉末混合物以形成生坯; 在非氧化性气氛中在1130℃〜1230℃的温度下烧结所述生坯。 并在烧结炉中以5℃/ min的速率冷却烧结产品。 至20℃/分钟。