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    • 1. 发明专利
    • リングロール成形機
    • 环形成型机
    • JP2015024420A
    • 2015-02-05
    • JP2013154737
    • 2013-07-25
    • 大同特殊鋼株式会社Daido Steel Co Ltd
    • NISHIURA TORUYOSHIDA HIROAKIFUJIWARA MASANAO
    • B21H1/06
    • 【課題】内径拡大比を大きくしても所望の円形状を良好に実現することが可能なリングロール成形機を提供する。【解決手段】成形ロール1とマンドレル2とで円環状ワークWの周壁の一部をそれぞれ外周側と内周側から挟んでワークWを薄肉化しつつ拡径するリングロール成形機において、成形ロール1へのワークWの圧接部を通る法線に対し対称な位置にそれぞれ、拡径しつつあるワークWの成形ロール1から遠い側の外周面に当接する一対のバックアップロール4を設ける。そして、バックアップロール4を成形ロール1方向へ付勢するバネ部材73を設ける。【選択図】図2
    • 要解决的问题:提供一种能够实现期望的圆形形状的环形成型机,优选地甚至内径扩大比也是增加的。解决方案:提供一种用于夹持环形工件的周壁的一部分的环形辊成型机 通过成型辊1和来自外周和内周侧的心轴2,用于使工件W更薄并且扩大工件W的直径。一对支承辊4与外周表面接触远离 被设置在工件W的成型辊1上的位置与通过工件W的压接部的法线相对的成型辊1的对称位置。另外,用于使支承辊4通电的弹簧部件73 提供到成型辊1的方向。
    • 2. 发明专利
    • FREE-FORGING PROCESSING METHOD OF Ni GROUP THERMOSTABLE ALLOY MEMBER
    • 镍基可热熔合金成员的自由加工方法
    • JP2014161861A
    • 2014-09-08
    • JP2013033885
    • 2013-02-22
    • Daido Steel Co Ltd大同特殊鋼株式会社
    • SAKURAI SHINGOHATTA TAKESHIOKAJIMA TAKUMAYOSHIDA HIROAKIHIRONAKA TOMOHISA
    • B21J5/00C22C19/05C22F1/00C22F1/10
    • PROBLEM TO BE SOLVED: To provide a free-forging processing method capable of controlling in a desired crystal grain, when fining a crystal grain of an Ni group thermostable alloy member by the pin stop effect by a δ phase.SOLUTION: After executing δ phase deposition treatment for depositing a δ phase in a needle shape in advance to an Ni group thermostable alloy material having a composition of Ni:50-55%, Cr:17-21%, Al:0.2-0.8%, Ti:0.6-1.2%, Nb:4.7-5.6%, Mo:2.8-3.3%, Co:≤1.0%, C+Si+Mn+P+S+Cu+B:≤1.1% and a residual part of Fe in mass%, a forging object material by δ phase deposition treatment is heated at 920-1025°C for 1-36hr, a deposited needle-like δ phase is partially solidly solved by causing segmentation, and initial quantity adjustment processing of the δ phase is executed for adjusting a deposition quantity of the δ phase, and afterwards, a finishing forging process is executed for repeating free forging and reheating by at least one time or more for adding a stroke at a recrystallization temperature or more in the total draft ratio of 33% or more.
    • 要解决的问题:提供一种能够在期望的晶粒中进行控制的自由锻造加工方法,当通过δ相的销停止效应使Ni基热稳定性合金部件的晶粒细化时。解决方案:执行δ相 预先将具有Ni:50-55%,Cr:17-21%,Al:0.2-0.8%,Ti:0.6-1.2的Ni基热稳定性合金材料预先沉积成针状的δ相的沉积处理 %,Nb:4.7-5.6%,Mo:2.8-3.3%,Co:≤1.0%,C + Si + Mn + P + S + Cu + B:≤1.1%,Fe的残留部分质量% 通过δ相沉积处理将锻造对象材料在920-1025℃下加热1-36小时,通过分割将部分固溶的针状δ相部分地固溶,并且执行δ相的初始量调整处理以调整 δ相的沉积量,然后执行精加工锻造工序,用于重复自由锻造和再加热至少一次以上以增加冲程 在33%以上的总牵伸比下,在再结晶温度以上。
    • 3. 发明专利
    • Manufacturing method for disc-shaped forging
    • 盘形锻造的制造方法
    • JP2014151340A
    • 2014-08-25
    • JP2013022636
    • 2013-02-07
    • Daido Steel Co Ltd大同特殊鋼株式会社
    • SAKURAI SHINGOOKAJIMA TAKUMAYOSHIDA HIROAKI
    • B21K1/32B21J5/00B21J13/06
    • PROBLEM TO BE SOLVED: To provide a manufacturing method for a disc-shaped forging which has no restrictions in size of a forging target material that can be substantially forged even when the capacity of a press machine is constant.SOLUTION: The manufacturing method for a disc-shaped forging comprises the step of multiple radiation forging for carrying out radiation forging by two or more rounds from the outer periphery of a disc-shaped forging target material toward the center thereof by using a lower anvil, which can mount the disc-shaped forging target material of initial diameter D and initial height H(≤D) and is rotatable around a single spindle, and an upper anvil, which can draft the forging target material by moving up and down on the single spindle with respect to the forging target material and is movable toward the center of the lower anvil. After the step of multiple radiation forging, the method may include another step which is to cross-forge an unworked part remaining in the center of the forging target material.
    • 要解决的问题:提供一种盘形锻造的制造方法,其即使在压力机的容量恒定的情况下也能够基本上锻造的锻造对象材料的尺寸没有限制。解决方案: 盘形锻造包括多个辐射锻造的步骤,用于通过使用能够安装圆盘形锻造材料的下砧来从盘形锻造靶材的外周向其中心进行两轮或更多轮的辐射锻造 锻造初始直径D的目标材料和初始高度H(≤D)并且能够围绕单个主轴旋转;以及上砧,其可以相对于锻造目标在单个主轴上上下移动来对锻造目标材料进行牵引 材料并且可朝向下砧的中心移动。 在多次辐射锻造的步骤之后,该方法可以包括另一步骤,即横穿锻造保留在锻造目标材料的中心的未加工部分。
    • 4. 发明专利
    • Cracking connecting rod and method for producing the same
    • 破碎连接杆及其制造方法
    • JP2010180473A
    • 2010-08-19
    • JP2009027755
    • 2009-02-09
    • Daido Steel Co Ltd大同特殊鋼株式会社
    • MIYAZAKI TAKAHIRONAKAJIMA TOMOYUKIHOBO MAKOTOKATO SHINICHIROKANO TAKASHIYOSHIDA HIROAKIFUJIWARA MASANAOTSUDA MASASHIYAMAGUCHI KATSUYA
    • C22C38/00B21J5/00B21J5/02B21K1/14C21D8/00C22C38/60F16C7/02
    • PROBLEM TO BE SOLVED: To provide a cracking connecting rod made of a ferrite-pearlite type non-heattreated steel, and having a high fatigue limit, and to provide a method for producing the same.
      SOLUTION: The cracking connecting rod is composed of a ferrite-pearlite type non-heattreated steel comprising essential additional elements and optionally comprisable additional elements, and in which 0.20 to 0.60% C is comprised. The cracking connecting rod is at least provided with: a large edge part and a small edge part respectively engaged with a crankshaft and a piston; and a rod part connecting them and subjected to coining treatment. To this, C, N, Ti, Mn and Cr are added as the essential additional elements, and Si, P, S, V, Pb, Te, Ca and Bi are added as the optional additional elements. In these additional elements, Mn is added, by mass, in the range of 0.30 to 1.50% and Cr is added in the range of 0.05 to 1.00%. The connecting rod further comprises N in the range of 0.005 to 0.03% and also Ti in the range of ≤0.20% so as to satisfy Ti≥3.4N+0.02. The connecting rod further comprises ≤2.0% Si, ≤0.2% P, ≤0.2% S, ≤0.50% V, ≤0.30% Pb, ≤0.3% Te, ≤0.01% Ca and ≤0.30% Bi, and in which the 0.2% proof stress in the rod part is >700 MPa, and further, the 0.2% proof stress in the large edge part is
    • 要解决的问题:提供一种由铁素体 - 珠光体型非热处理钢制成并具有高疲劳极限的开裂连杆,并提供其制造方法。 解决方案:裂解连杆由铁素体 - 珠光体型非加热处理钢构成,其包括必需的附加元素和任选的可包含的附加元素,并且其中包含0.20至0.60%的C。 破裂连杆至少设有:分别与曲轴和活塞接合的大边缘部分和小边缘部分; 和连接它们并进行压印处理的杆部分。 添加C,N,Ti,Mn和Cr作为必需的附加元素,并且添加Si,P,S,V,Pb,Te,Ca和Bi作为任选的附加元素。 在这些附加元素中,Mn以质量计添加在0.30〜1.50%的范围内,Cr的添加量为0.05〜1.00%。 连接杆还包括在0.005-0.03%的范围内的N和≤0.20%的Ti,以满足Ti≥3.4N+ 0.02。 连杆还包括≤2.0%Si,≤0.2%P,≤0.2%S,≤0.50%V,≤0.30%Pb,≤0.3%Te,≤0.01%Ca和≤0.30%Bi,其中0.2 杆部的耐屈曲应力> 700MPa,大边缘部的0.2%的屈服应力<650MPa。 版权所有(C)2010,JPO&INPIT
    • 5. 发明专利
    • Gear production device and method for producing the same
    • 齿轮生产装置及其制造方法
    • JP2010064100A
    • 2010-03-25
    • JP2008232001
    • 2008-09-10
    • Daido Steel Co Ltd大同特殊鋼株式会社
    • FUJIWARA MASANAOYOSHIDA HIROAKI
    • B21K1/30B21J5/02
    • PROBLEM TO BE SOLVED: To provide a gear production device which can form a helical gear having remarkably satisfactory tooth profile precision over the whole of the inner circumferential face of an annular gear stock, and to provide a method for producing the gear. SOLUTION: In the gear production device, a means (E) capable of pressing the gear stock (W) to a direction opposite to the pressing direction by the pressing means (D) from the other edge of the gear stock (W) toward the opening part, when a gear stock (W) is pushed into a gap formed between a cylindrical part (4) having a smaller diameter in a die (A) and a part provided with a helical gear forming tooth profile (5) in a mandrel (B) through a diameter-reduced part (3) by a pressing means (D), is provided, and also, while pressing the annular gear stock (W) by the pressing means (D) and (E), the gear stock (W), the pressing means (D) and (E) and the mandrel (B) can move to the pressing direction by the pressing means (D) along the inner circumferential face of the cylindrical part (4) in the die (A) all together. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种齿轮制造装置,其能够形成在环形齿轮架的整个内周面上具有非常令人满意的齿廓精度的斜齿轮,并且提供一种用于制造齿轮的方法。 解决方案:在齿轮制造装置中,能够从齿轮箱(W)的另一个边缘通过按压装置(D)将齿轮架(W)按压到与按压方向相反的方向的装置(E) ),当齿轮架(W)被推入形成在模具(A)中具有较小直径的圆柱形部分(4)之间的间隙和设有斜齿轮形成齿廓(5)的部分时, 在通过加压装置(D)通过直径减小部分(3)的心轴(B)中,并且还通过按压装置(D)和(E)挤压环形齿轮架(W) 齿轮架(W),按压装置(D)和(E)以及心轴(B)可沿着圆柱形部分(4)的内圆周面沿着按压装置(D)移动到按压方向 (A)都在一起。 版权所有(C)2010,JPO&INPIT
    • 6. 发明专利
    • Ironing method for cup-shaped member with suppressing crack
    • 用于具有抑制裂纹的杯形构件的熨烫方法
    • JP2007098425A
    • 2007-04-19
    • JP2005290379
    • 2005-10-03
    • Daido Steel Co Ltd大同特殊鋼株式会社
    • YOSHIDA HIROAKIITO JUICHI
    • B21J5/06B21K21/00
    • PROBLEM TO BE SOLVED: To provide an ironing method for a cup-shaped member capable of suppressing a crack during the working even though heat treatment for softening a preliminary molded article to enhance deformability thereof is omitted or simplified. SOLUTION: In the ironing method, the preliminary molded article 10 is axially passed through a die 14 together with a punch 12 in a state that the punch 12 is inserted into a center hole of a preliminary molded article 10 formed by preliminarily molding a steel into a cup shape in advance. The outer peripheral part of the molded article 10 is subjected to ironing to be thickened to the punch 12 side. The finishing work of outer and inner peripheral shapes is carried out, wherein the die angle α of the die 14 is set to 12.5° or less, or the reduction of area is set to 5.5% or less. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了提供一种能够抑制工作期间的裂纹的杯形构件的熨烫方法,即使为了提高其变形性而使预成型体软化的热处理也省略或简化。 解决方案:在熨烫方法中,预成型品10与冲头12一起轴向穿过模具14,其中冲头12插入到通过预成型形成的预成型品10的中心孔中 提前将钢成杯状。 模制品10的外周部分经受熨烫以加厚到冲头12侧。 进行外周和外周形状的整理工作,其中模具14的模角α设定为12.5°以下,面积减少为5.5%以下。 版权所有(C)2007,JPO&INPIT