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1. 发明专利

JP2005171334A Non-heattreated steel component manufacturing method, and non-heattreated steel component using the same 有权
标题翻译：非加热钢部件制造方法和使用其的非加热钢部件
公开(公告)号：JP2005171334A
公开(公告)日：2005-06-30
申请号：JP2003414154
申请日：2003-12-12
申请人： Daido Steel Co Ltd , Nissan Motor Co Ltd , 大同特殊鋼株式会社 , 日産自動車株式会社
发明人： ITO JUICHI , YOSHIDA HIROAKI , ISOGAWA YUKIHIRO , OGAWA JUNPEI , MIYAZAWA TOMONORI , OKADA YOSHIO , IKEUCHI ATSUSHI
IPC分类号： B21J5/00 , B21J13/02 , C21D8/00 , C22C38/00 , C22C38/38 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a non-heattreated steel component and a method for manufacturing the same in which a high working ratio can be employed, the manufacturing efficiency is high, and the high proof stress can be ensured.
SOLUTION: Steel containing, by mass, ≥95% Fe, ≥0.18 and ≤0.45% C, ≥0.10% and ≤2.00% Si, ≥0.40% and ≤1.80% Mn, ≥0.05% and ≤0.50% Cr, ≥0.003% and ≤0.040% Al, and ≥0.005% and ≤0.020% N is heated to the temperature of ≥1,000°C and ≤1,300°C for austenizing. Thereafter, in order to satisfy the condition of 1-exp(-ε×(750÷Tp)
-10 )>0.8 with Tp as the preliminary working temperature and ε as the mean strain during the preliminary working, Tp and ε are set, and the preliminary working is performed. By forging a preliminarily worked body obtained by the preliminary working at the temperature of ≥680°C and ≤850°C, the normal working is performed to obtain the component shape, and the working ratio of the normal working is set to be ≥30% in the compression ratio.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种非加热处理的钢部件及其制造方法，其中可以使用高加工率，制造效率高，并且可以确保高的抗张力。
解决方案：含有≥95％Fe，≥0.18和≤0.45％C，≥0.10％和≤2.00％Si，≥0.40％和≤1.80％Mn，≥0.05％和≤0.50％Cr的钢，≥0.003％和≤0.040％的Al，≥0.005％和≤0.020％的N被加热到≥1000℃的温度和≤1,300℃的奥氏体化。此后，为了满足作为初步工作温度的Tp为1-exp（-ε×（750÷Tp） -10 ）> 0.8的条件，ε为初步加工期间的平均应变，设定Tp，ε，进行预备工作。通过锻造通过在≥680℃和≤850℃的温度下预备加工获得的预加工体，进行正常加工以获得部件形状，并且正常加工的加工比设定为≥30 ％的压缩比。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2007216252A Method for cooling die 审中-公开
标题翻译：冷却DIE的方法
公开(公告)号：JP2007216252A
公开(公告)日：2007-08-30
申请号：JP2006038219
申请日：2006-02-15
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： OKAJIMA TAKUMA , ITO JUICHI , YOSHIDA HIROAKI , ISOGAWA YUKIHIRO
IPC分类号： B22D17/22 , B21J13/02 , B22C9/06 , B29C33/04 , C23F11/00
摘要： PROBLEM TO BE SOLVED: To provide a method for cooling a die by which, during the operation of a die, the occurrence of rust as the starting point of cracks to water-cooled holes in which stress caused by thermal fatigue is generated is suppressed, thereby the life of the die can be improved.
SOLUTION: In the method for cooling the die, a rust preventive is added to cooling water for cooling the die to prepare alkaline cooling water of a pH of ≥9, the cooling water passing the water-cooled holes penetrated through the inside of the die, and thereafter, the alkaline cooling water is circulated through the water-cooled holes of the die. At this time, as the rust preventive, the rust preventive containing amine is preferable.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种冷却模具的方法，其中，在模具的操作期间，产生作为裂纹的起点的锈蚀到产生由热疲劳引起的应力的水冷却孔被抑制，从而可以提高模具的寿命。解决方案：在冷却模具的方法中，向冷却水中加入防锈剂以冷却模具，制备pH为≥9的碱性冷却水，通过水冷孔的冷却水穿过内部的模具，然后碱性冷却水循环通过模具的水冷孔。此时，作为防锈剂，优选含防锈剂的胺。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2007130661A Multi-stage forward extrusion method 审中-公开
标题翻译：多阶段前向挤压方法
公开(公告)号：JP2007130661A
公开(公告)日：2007-05-31
申请号：JP2005325413
申请日：2005-11-09
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： YOSHIDA HIROAKI , ITO JUICHI , NAKAJIMA TOSHIO
IPC分类号： B21C23/08 , B21C23/00 , B21C25/02 , B21J5/06
摘要： PROBLEM TO BE SOLVED: To provide a multi-stage forward extrusion method capable of preventing generation of internal cracks during the extrusion, and reducing the manufacturing cost. SOLUTION: The forward extrusion is performed by using a material having the similar quenching property evaluated in terms of manganese equivalent Mneq, and the die angle α of an extrusion die forming a preset area where any chevron crack (internal crack of a center) is hardly generated for each stage of the extrusion, and the reduction rate of area Rd at the extrusion. By performing the extrusion using the die angle α of the extrusion die forming the preset area where such a chevron crack is hardly generated, and the reduction rate of area Rd at the extrusion, the forward extrusion free from any internal crack can be performed even when simplifying or eliminating the heat treatment for the softening in advance, or even without using a material to be worked having a special metal composition. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够防止在挤出期间产生内部裂纹的多级正向挤出法，并降低制造成本。解决方案：正向挤出通过使用具有以锰当量Mneq评估的类似淬火特性的材料和形成预定区域的挤出模头的模角α进行，其中任何人字纹裂纹（中心的内部裂纹）对于挤出的每个阶段几乎不产生，并且挤出时的面积Rd的减小率。通过使用挤出模具的模角α进行挤压，形成几乎不产生这种人字纹裂纹的预设区域，以及挤出时的面积Rd的减小率，即使当没有任何内部裂纹时，即使当预先简化或消除用于软化的热处理，或甚至不使用具有特殊金属组成的待加工材料。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2007098425A Ironing method for cup-shaped member with suppressing crack 审中-公开
标题翻译：用于具有抑制裂纹的杯形构件的熨烫方法
公开(公告)号：JP2007098425A
公开(公告)日：2007-04-19
申请号：JP2005290379
申请日：2005-10-03
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： YOSHIDA HIROAKI , ITO JUICHI
IPC分类号： B21J5/06 , B21K21/00
摘要： 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
摘要翻译：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

5. 发明专利

JP2005154595A Water-based lubricant for plastic working 有权
标题翻译：水性润滑剂用于塑料加工
公开(公告)号：JP2005154595A
公开(公告)日：2005-06-16
申请号：JP2003395677
申请日：2003-11-26
申请人： Daido Steel Co Ltd , Honda Motor Co Ltd , Kyodo Yushi Co Ltd , 協同油脂株式会社 , 大同特殊鋼株式会社 , 本田技研工業株式会社
发明人： DOI YOSHIHISA , SAKAKIBARA MASAYOSHI , SAKAI KENJI , GOTO KOICHI , YOSHIDA HIROAKI , ITO JUICHI
IPC分类号： C10M125/22 , C10M129/08 , C10M129/16 , C10M145/16 , C10M171/00 , C10M173/02 , C10N10/12 , C10N30/06 , C10N40/20
CPC分类号： C10M173/02 , C10M2201/041 , C10M2201/0413 , C10M2201/066 , C10M2201/0663 , C10M2205/026 , C10M2207/02 , C10M2207/022 , C10M2217/028 , C10N2210/01 , C10N2220/021 , C10N2230/04 , C10N2230/06 , C10N2240/402 , C10N2240/405 , C10N2250/121 , C10M2209/086
摘要： PROBLEM TO BE SOLVED: To provide a water-based lubricant for plastic working, not suffering from poor lubrication, which is a defect of a conventional water-soluble lubricant and being capable of allowing continuous plastic working without interrupting a plurality of stages of plastic working to work a starting material into the final product.
SOLUTION: The water-based lubricant for plastic working comprises 10 to 40 mass% (a) solid lubricant, 2 to 20 mass% (b) lubricative and dispersible adhesion accelerator, 2 to 20 mass% (c) wetting and water vaporization accelerating agent, and water.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供用于塑性加工的水性润滑剂，不会受到润滑不良，这是常规水溶性润滑剂的缺点，并且能够允许连续塑性加工而不中断多个阶段的塑料加工成最终产品的起始材料。
解决方案：塑料加工用水性润滑剂含有10〜40质量％（a）固体润滑剂，2〜20质量％（b）润滑分散粘合促进剂，2〜20质量％（c）润湿和水蒸发促进剂和水。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2006326606A Method for predicting service life of metal die 审中-公开
标题翻译：用于预测金属制品的使用寿命的方法
公开(公告)号：JP2006326606A
公开(公告)日：2006-12-07
申请号：JP2005150266
申请日：2005-05-23
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： YOSHIDA HIROAKI , ITO JUICHI , OKAJIMA TAKUMA
IPC分类号： B21J13/02 , B21D37/00
CPC分类号： B21J13/02 , B21J5/00
摘要： PROBLEM TO BE SOLVED: To provide a method for predicting the service life of a metal die with which data served to the decision in the design of the metal die or the using condition, are obtained by predicting a low cycle fatigue strength FL (number of shots which can forge until the service life of the metal die is run out) that is an important factor effected to the service life of the metal die for applying plastic working, typical of the metal die for forging.
SOLUTION: For each material of metal die, a low cycle damaging value Dc defined with a formula Dc=σ
eq /(YS×softening ratio) [σ
eq : Von Mises equivalent stress and YS: yield stress (containing both of tension and compression)] is calculated. Further, based on this value Dc, a formula decided with the low cycle fatigue service life FL shown with FL=C
1 ×exp(C
2 ×Dc
C3 )[FL: number of shots till damaging and C
1 , C
2 and C
3 : constant values decided with the material], is introduced and the number of useable shots to the metal die, is predicted.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于预测金属模具的设计中的数据用于金属模具的使用寿命或使用条件的方法，通过预测低周疲劳强度FL （金属模具的使用寿命期间能够锻造的照射次数），这是对金属模具进行塑性加工（典型的用于锻造的金属模具）的使用寿命的重要因素。解决方案：对于金属模具的每种材料，由公式Dc =σSeq/ /（YS×软化比）[σSB] eq 定义的低循环损伤值Dc ：Von Mises等效应力和YS：屈服应力（包含张力和压缩两者）]。此外，根据该值Dc，由FL = C ×××（C 2 ×Dc C3所示的低循环疲劳寿命FL决定的公式）[FL：直到破坏的次数和C 1 ，C 2 和C 3 ：用材料确定的常数 ]，并预测了可用于金属模具的镜头数量。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2009046607A Lubricant for metal plastic working 审中-公开
标题翻译：润滑剂用于金属塑料加工
公开(公告)号：JP2009046607A
公开(公告)日：2009-03-05
申请号：JP2007214981
申请日：2007-08-21
申请人： Daido Steel Co Ltd , Kyodo Yushi Co Ltd , 協同油脂株式会社 , 大同特殊鋼株式会社
发明人： YONEDA YOSHIYUKI , SUDA MITSUTAKA , ITO JUICHI , YOSHIDA HIROAKI
IPC分类号： C10M169/04 , C10M105/24 , C10M105/26 , C10M129/40 , C10M159/06 , C10N10/02 , C10N10/04 , C10N30/00 , C10N40/24
摘要： PROBLEM TO BE SOLVED: To provide a lubricant for metal plastic working such as for use in film-forming cold forging processes for carbon steel, alloy steel, etc., excellent in workability, causing no deterioration of objects such as phosphorus infiltration, being friendly to the environment with low waste liquid levels, and leading to the reduction in plant and equipment investment cost and also in operating cost.
SOLUTION: The lubricant for metal plastic working comprises (A) at least one compound selected from the group consisting of water-soluble aliphatic hydroxymono- or polycarboxylic acid and water-soluble aliphatic polycarboxylic acid, (B) a solid lubricant and (C) a binder.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供用于碳钢，合金钢等的成膜冷锻方法的金属塑性加工用润滑剂，其加工性优异，不会导致磷渗透等物品的劣化对废水液位低的环境友好，导致设备投资成本降低，运行成本降低。用于金属塑料加工的润滑剂包含（A）至少一种选自水溶性脂族羟基单 - 或多羧酸和水溶性脂族多元羧酸的化合物，（B）固体润滑剂和（ C）粘合剂。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2008274393A Manufacturing method of high-strength, high-toughness ferrite/pearlite non-heat-treated steel forging part 审中-公开
标题翻译：高强度，高韧性铁素体/ PEARLITE非热处理钢锻件的制造方法
公开(公告)号：JP2008274393A
公开(公告)日：2008-11-13
申请号：JP2007208340
申请日：2007-08-09
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： YOSHIDA HIROAKI , ITO JUICHI
IPC分类号： C21D8/00 , B21J1/06 , B21J5/00 , C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of a ferrite and pearlite non-heat-treated steel forging part, capable of easily realizing a fine ferrite and pearlite structure through freezing and hardening of crystal grains, by using a ferrite and pearlite non-heat-treated steel containing V and suppressing process heat immediately after forging.
SOLUTION: In the manufacturing method of the high-strength, high-toughness ferrite and pearlite non-heat-treated steel forging part, the ferrite and pearlite non-heat-treated steel containing by mass, 0.05-0.50% V and comprising ≥90% of ferrite and pearlite structure is heated to a solution temperature of a V carbide, subsequently cooled to 700-950°C, subjected to forging at this temperature range so that the compression forming rate reaches ≥30% and the contact time with a die reaches ≥0.20 sec, and subsequently cooled so as to induce ferrite and pearlite transformation to obtain the forging part having a pearlite grain size of ≤18 μm.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种铁素体和珠光体非热处理钢锻造部件的制造方法，其能够通过使用铁素体和/或铁素体容易地实现晶粒的冷冻硬化，从而容易地实现细小的铁素体和珠光体组织含有V的珠光体非热处理钢，锻造后立即抑制加工热。
解决方案：在高强度，高韧性铁素体和珠光体非热处理钢锻件的制造方法中，铁素体和珠光体非热处理钢含量为0.05-0.50％V，将≥90％的铁素体和珠光体组织加热至V碳化物的溶液温度，随后冷却至700-950℃，在该温度范围内进行锻造，使得压缩成形速率达到≥30％，接触时间模具达到≥0.20秒，随后冷却，引起铁素体和珠光体相变，得到珠光体粒径≤18μm的锻造部分。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2006326634A Method for predicting damage of metal die 审中-公开
标题翻译：预测金属损伤的方法
公开(公告)号：JP2006326634A
公开(公告)日：2006-12-07
申请号：JP2005153198
申请日：2005-05-25
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： YOSHIDA HIROAKI , ITO JUICHI , OKAJIMA TAKUMA
IPC分类号： B21J13/02 , B21D37/00
CPC分类号： B21C25/025 , B21J13/02
摘要： PROBLEM TO BE SOLVED: To provide a method for predicting the damage of a metal die which can serve to the design of the metal die including the using condition, such as the selection of material and hardness and the decision of shape of the metal die, by predicting the damage caused by plastic fluidity of a forging die.
SOLUTION: Related to a plastic fluidity boundary value DC calculated with the formula Dc=σ
eq /(YS×S
Rtotal ), [σ
eq : Von Mises equivalent stress, YS: dynamic compression yield strength, S
Rtotal : softening ratio and this S
Rtotal is given with the formula S
Rtotal =S
Rtemp ×α and S
Rtemp is S
Rtemp =1-exp{-C
1 (t/t
0.2 )
n }and wherein, t(sec)=C
2 ×exp(Q/RT), Q: active energy, C
1 and C
2 : constant values, R=8.31, α=D×σ
eq /YS
init , Y
init : initial dynamic yield strength, D=1.9], a concrete datum for each material is obtained and the damage of the metal die is predicted under condition that the plastic deformation or the plastic fluidity is started when the value of Dc reaches 1.0.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于预测金属模具的损坏的方法，其可以用于设计包括使用条件的金属模具，例如材料和硬度的选择以及形状的决定金属模具，通过预测锻造模具的塑性流动性造成的损坏。
解决方案：与通过公式Dc =σ /（YS×S Rtotal ）计算的塑性流动界限值DC相关，[σ< / SB>：Von Mises等效应力，YS：动态压缩屈服强度，S Rtotal ：软化比，该S Rtotal 用公式S Rtotal / SB> = S Rtemp ×α和S Rtemp = 1-expa-C 1 t / t 0.2 ） n }，其中，t（sec）= C 2 ×exp（Q / RT），C 1 和C 2 ：常数值，R = 8.31，α= D×σ / YS < >，Y init ：初始动态屈服强度D = 1.9]，获得每种材料的混凝土基准，并且在塑性变形或塑性流动性为当Dc的值达到1.0时开始。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2006297429A Method for predicting damage of metal die 有权
标题翻译：预测金属损伤的方法
公开(公告)号：JP2006297429A
公开(公告)日：2006-11-02
申请号：JP2005120660
申请日：2005-04-19
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： YOSHIDA HIROAKI , ITO JUICHI
IPC分类号： B21J13/02
CPC分类号： B21J13/02
摘要： PROBLEM TO BE SOLVED: To provide a method for predicting the damage of a metal die with which the damage (large cracking or initial cracking) caused by brittle fracture as an important factor affecting the service life of the metal die for performing the plastic working of metal, such as a forging die, as the typical example, is predicted and the predicted value for serving to the metal die designing, such as the selection of material and hardness of the metal die and the decision of the die shape, etc., can be obtained.
SOLUTION: The metal die designing is performed by selecting conditions, in which the brittle fracture predicted values F
c1 -F
c3 calculated with following formulas 1-3 do not exceed the critical values decided according to the material. The above-mentioned formulas 1-3 are as the followings: [Formula 1] F
c1 =(σ
m /σ
eq ), [Formula 2] F
c2 =(σ
m /σ
1max ) and [Formula 3] F
c3 =(σ
1max /σ
eq ). Wherein, σ
m is hydrostatic-pressure stress loaded to tension side of the metal die, σ
eq is equivalent stress of Von Misese, and σ
1max is the maximum main stress.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于预测由脆性断裂引起的损坏（大的开裂或初始开裂）的金属模具的损坏作为影响金属模具的使用寿命的重要因素进行执行的方法作为典型例子，可以预测金属的塑性加工，例如锻造模具，以及用于金属模具设计的预测值，例如金属模具的材料和硬度的选择以及模具形状的决定，等等。
解决方案：通过选择条件进行金属模具设计，其中根据下式1-3计算的脆性断裂预测值F c1 -F c3 超过根据材料决定的临界值。上述式1-3如下：[式1] F c1 =（σ /σ 式2] F c2 =（σ /σ 1max ）和[式3] σ 1MAX /σ当量）。其中σ m 是负载在金属模头的张力侧的流体静压力应力，σ等效应力是Von Misese的等效应力，σ 1max 是最大主应力。版权所有（C）2007，JPO＆INPIT

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