公开(公告)号：US4279646A

公开(公告)日：1981-07-21

申请号：US105222

申请日：1979-12-19

申请人： Tetsuo Kato ,  Shozo Abeyama ,  Atsuyoshi Kimura ,  Sadayuki Nakamura

发明人： Tetsuo Kato ,  Shozo Abeyama ,  Atsuyoshi Kimura ,  Sadayuki Nakamura

IPC分类号： C22C38/00 ,  C22C38/60 ,  C22C39/14 ,  C22C39/26

CPC分类号： C22C38/60

摘要： A free cutting steel for machine structural use containing C up to 0.6%, Si up to 2.0%, Mn up to 2.0%, S 0.04 to 0.4%, Te 0.002 to 0.5% and O 0.0010 0.0300%, the balance being substantially Fe exhibits excellent machinability when the MnS-based inclusion is in the form of particles of 5 to 100.mu. long, 1 to 10.mu. wide, wherein the aspect ratio length/width is not larger than 10, and at the density of 20 to 200 particles per 1 mm.sup.2 of the matrix cross section.A free cutting steel for machine structural use containing C up to 0.6%, Si up to 2.0%, Mn up to 2.0%, S 0.04 to 0.4% and Te up to 0.1%, wherein %Te/%S is at least 0.04, O up to 0.003% and N up to 0.0200%, the balance being substantially Fe exhibits improved rolling-contact fatique strength when at least 80% of sulfide-based inclusion particles of 10.mu. long or more have the aspect ratio length/width of 5 or less, and when areal percentage of alumina cluster in the matrix cross section is not higher than 0.5%.

摘要翻译： 一种用于机器结构用途的自由切削钢，其含有C高达0.6％，Si高达2.0％，Mn高达2.0％，S 0.04-0.4％，Te 0.002-0.5％和O 0.0010 0.0300％，余量基本上是Fe 当MnS系夹杂物为5〜100μm，1〜10μm宽的粒子形式时，其纵横比长度/宽度不大于10，密度为20〜200个/ 1 mm2的矩阵横截面。 一种用于机械结构用途的自由切削钢，其含有C高达0.6％，Si高达2.0％，Mn高达2.0％，S 0.04至0.4％，Te至0.1％，其中Te /％S至少为0.04， O至0.003％，N至0.0200％，其余为实质上Fe，当至少80％的10微米或更长的硫化物基夹杂物颗粒的纵横比长度/宽度为5时，表现出改善的滚动接触强度强度 以下，并且当基体截面中氧化铝簇的面积百分比不高于0.5％时。

公开(公告)号：US4218243A

公开(公告)日：1980-08-19

申请号：US877807

申请日：1978-02-15

申请人： Kingo Kiyonaga ,  Toshio Okuno ,  Kenji Tokuda

发明人： Kingo Kiyonaga ,  Toshio Okuno ,  Kenji Tokuda

IPC分类号： C03B9/48 ,  C22C38/30 ,  C22C39/14

CPC分类号： C03B9/48 ,  C22C38/30

摘要： A steel which consists essentially of 0.25-0.65% of C, up to 2.50% of Si, up to 2.00% of Mn, 10.00-20.00% of Cr, 4.00-13.00% of Co, 1.00-3.00% of Al, up to 0.25% of N and the balance essentially Fe and ordinary impurities and satisfies the relation:Cr equivalent=-40C(%)+6Si (%)-2Mn(%)+Cr(%)-2Co(%)-30N(%)+12Al(%).ltoreq.13%provides a metal mold which need not be Cr-plated and is suitable of use in molding high-quality glass wares.

摘要翻译： 一种钢，其主要由C的0.25-0.65％，Si的2.50％，至多2.00％的Mn，10.00-20.00％的Cr，4.00-13.00％的Co，1.00-3.00％的Al组成，直到 Cr当量= -40℃（％）+ 6Si（％） - 2Mn（％）+ Cr（％）-2Co（％）-30N（％） + 12Al（％）

公开(公告)号：US3857741A

公开(公告)日：1974-12-31

申请号：US34270073

申请日：1973-03-19

申请人： REPUBLIC STEEL CORP

发明人： HULTGREN F ,  KOT R

IPC分类号： C21D7/13 ,  C21D9/48 ,  C22C39/14

CPC分类号： C21D7/13

摘要： Steel products, which have been subjected to a desired deformation, are characterized by superior strength, including markedly improved toughness or tensile properties or both, as a result of procedure whereby the steel is made temporarily superplastic at an elevated temperature and is deformed while in such state. This procedure for converting steel, notably ordinary and alloy grades of low carbon, ferritic character, to a superplastic state, e.g. affording very high ductility, and for deforming such superplastic steel in a desired manner, embraces: rapidly heating a body of steel to a temperature, advantageously in the alpha-plus-gamma phase field, where the steel is then found, over a brief interval, to experience a transitional state of severe microstructural instability and to be characterized by superplasticity; and applying stress to the body in such interval to effect the desired deformation. The new products, which are compositionally of the character required for the process, are found to have much higher strength than the original steel.

摘要翻译： 已经经受所需变形的钢产品的特征在于具有优异的强度，包括显着提高的韧性或拉伸性能，或两者都是由于钢在高温下暂时超塑性而在此过程中变形的过程 州。 这种将钢，特别是普通和合金等级的低碳，铁素体特性转化成超塑性状态的方法，例如 提供非常高的延展性，并且以期望的方式使这种超塑性钢变形，包括：将钢体快速加热到有利于在α-γ-γ相场中的温度，然后在短时间内发现钢 经历了严重的微观结构不稳定的过渡状态，并以超塑性为特征; 并在这样的间隔中对身体施加应力以实现所需的变形。 发现组合成为该工艺所需性质的新产品具有比原始钢强得多的强度。

公开(公告)号：US3846184A

公开(公告)日：1974-11-05

申请号：US27038972

申请日：1972-07-10

申请人： BETHLEHEM STEEL CORP

发明人： MELLOY G ,  RIEDEL J ,  PODGURSKY P

IPC分类号： C22C38/00 ,  C04B35/70 ,  C22C39/14

CPC分类号： C22C38/001

摘要： 1. A QUENCHED AND TEMPERED FERROUS DIE HAVING IMPROVED WEAR RESISTANCE, AS EXEMPLIFIED BY A HIGH RESISTANCE TO SCORING, CHECKING AND PICK-UP OF THE STEEL SHEET AND STRIP FORMED WITHIN SAID DIE, WHERE SAID IMPROVED WEAR RESISTANCE IS IMPARTED BY THE PRESENCE OF NITRIDES OF TITANIUM, COLUMBIUM AND/OR ZIRCONIUM, SAID DIE COMPRISING A QUENCHED AND TEMPERED FERROUS ALLOY CONSISTING ESSENTIALLY OF, BY WEIGHT, CARBON BETWEEN ABOUT 0.40 TO 1.30%, MANGANESE BETWEEN ABOUT 0.10 TO 3.00%, NITROGEN BETWEEN ABOUT 0.007 TO 0.050%, ABOUT 0.02 TO 0.25% TOTAL OF AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF TITANIUM, COLUMBIUM AND ZIRCONIUM, WITH THE BALANCE ESSENTIALLY IRON.

公开(公告)号：US3834950A

公开(公告)日：1974-09-10

申请号：US26670372

申请日：1972-06-27

申请人： FELTZ M

发明人： FELTZ M

IPC分类号： B02C17/20 ,  C22C37/06 ,  C22C38/18 ,  F23H17/12 ,  C22C39/14 ,  C22C39/20

CPC分类号： C22C38/18 ,  B02C17/20 ,  C22C37/06 ,  F23H17/12

摘要： A HEAT TREATED CAST FERROUS ALLOY CHARACTERIZED BY HIGH CHROMIUM AND CARBON CONTENT AND HAVING A METALLOGRAPHIS STRUCTURE EVIDENCING A HIGH CONTENT OF HARD EUTECTIC AND HYPEREUTECTIC CHROMIUM CARBIDES AND A MARTENSITIC SOLID SOLUTION FREE OF SECONDARY CARBIDES. THE METALLOGRAPHIC STRUCTURE IS OBTAINED BY THE SELECTION OF ALLOYING ELEMENTS IN THE PROPER PROPORTION AND HEAT TREATMENT.

公开(公告)号：US3832244A

公开(公告)日：1974-08-27

申请号：US10569071

申请日：1971-01-11

申请人： CRUCIBLE INC

发明人： PINNOW K ,  MEHTA J ,  MOSKOWITZ A

IPC分类号： C22C38/18 ,  C22C39/14

CPC分类号： C22C38/18

摘要： THIS INVENTION RELATES TO A STAINLESS STEEL AND A METHOD FOR PRODUCING THE SAME, WHEREBY MATERIAL PARTICULARLY ADAPTED FOR USE IN STRUCTRUAL APPLICATIONS SUCH AS THE MANUFACTURE OF CARGO BOXES IS ACHIEVED. SPECIFICALLY, THE MATERIAL IS CHARACTERIZED BY AN IMPROVED COMBINATION OF STRENGTH AND TOUGHNESS THAT IS ACHIEVED BY PRODUCING HOTBAND MATERIAL HAVING A SUBSTANTIALLY MARTENSITC MICROSTRUCTURE OF A COMPOSITION CONSISTING OF 10 MAX. PERCENT CARBON, 2 MAX. PERCENT MANGANESE, 1 MAX. PERCENT NICKEL, 9.5 TO 13.5 PERCENT CHROMIUM, AND THE BALANCE IRON. THIS MATERIAL HAS A MAXIMUM TITANIUM TO CARBON RATIO OF ABOUT 8. WITH TITANIUM TO CARBON RATIOS OF BETWEEN 4 TO 8, NICKEL MUST BE PRESENT WITHIN THE RANGE OF 5 TO 1 PERCENT. FOR OPTIMUM WELD:TOUGHNESS THE MAXIMUM TITANIUM TO CARBON RATIO IS ABOUT 4, EITHER WITH OR WITHOUT NICKEL, TO ACHIEVE THE DESIRED COMBINATION OF STRENGTH AND TOUGHNESS, THE ,ATERIAL IN HOT-BAND GAGE IS ANNEALED FOR A TIME AT TEMPERATURE TO ACHIEVE A HARDNESS OF AT LEAST 80 RB AND PREFERABLY 82 TO 92 RB.

公开(公告)号：US3826692A

公开(公告)日：1974-07-30

申请号：US33258272

申请日：1972-12-29

申请人： KENKYUSHO G NIPPON KOKAN KK

发明人： KINOSHITA K ,  YAMAGUCHI T

IPC分类号： C21D3/04 ,  C21D8/04 ,  C22C38/18 ,  C21D9/48 ,  C22C39/02 ,  C22C39/14

CPC分类号： C22C38/18 ,  C21D3/04 ,  C21D8/0436 ,  C21D8/0473

摘要： A METHOD FOR MANUFACTURING STEEL SHEET HAIVNG GOOD COLD FORMABILITY COMPRISING HOT ROLLING STEEL WHICH CONTAINS LESS THAN 0.10% C (LESS THAN 0.15% ANNEALING FOR DECARBURIZATION),LESS THAN 0.15% SI, LESS THAN 0.25% MN, 0.4% TO 1.5% CR, LESS THAN 0.8% MO, LESS THAN 0.5% 0.5% AL AND UNAVOIDABLE IMPURITIES, COLD ROLLING AT A REDUCTION RATE OF MORE THAN 30% AND ANNEALING FOR RECRYSTALLIZTION AT A TEMPERATURE ABOVE 700*C.

公开(公告)号：US3800631A

公开(公告)日：1974-04-02

申请号：US3800631D

申请日：1972-05-11

申请人： GEN ELECTRIC

发明人： BAXTER W

IPC分类号： C22C38/00 ,  C22C38/30 ,  C22C37/10 ,  C22C39/14

CPC分类号： C22C38/30

摘要： Addition of approximately 0.5 weight percent of Co to prior art''s Fe-Al-Cr-Y alloy reduces oxidation rate in air at 2,000*F to approximately one-fourth or less, and at 2,200*F to approximately two-thirds, of same alloy without Co, while producing improved tensile strength. Useful, inter alia, for automotive anti-pollution thermal exhaust reactor.

摘要翻译： 向现有技术的Fe-Al-Cr-Y合金添加约0.5重量％的Co使得在空气中的氧化速率在2000°F至约四分之一或更小，并且在2200°F至约三分之二的相同合金 而不产生Co，同时产生改善的拉伸强度。 特别适用于汽车防污热排烟反应器。

公开(公告)号：US3756807A

公开(公告)日：1973-09-04

申请号：US3756807D

申请日：1970-06-22

申请人： NISSHIN STEEL CO LTD

发明人： HOSHINO K ,  YAMAMOTO D

IPC分类号： C22C38/00 ,  C22C38/58 ,  C22C39/14

CPC分类号： C22C38/001 ,  C22C38/58

摘要： AUSTENITIC STAINLESS STEELS CONTAINING 0.05-0.15% C, 0.3-1.0% SI, 13.0-16.0% CR, 4.0-12.0% MN, 0.5-3.0% NI, 0.05-0.20% N AND THE BALANCE OF FE AS THE ESSENTIAL INGREDIENTS.

公开(公告)号：US3749568A

公开(公告)日：1973-07-31

申请号：US3749568D

申请日：1971-02-16

申请人： UDDEHOLMS AB

发明人： KYLBERG B ,  WOLD L

IPC分类号： C22C38/22 ,  C22C39/14

CPC分类号： C22C38/22

摘要： STEEL FOR EDGED TOOLS IN THE FORM OF A THIN STRIP MATERIAL, THE STEEL BEING CHARACTERIZED BY A COMPOSITION EXPRESSED IN WEIGHT PERCENT AS FOLLOWS:

PERCENT CR ---------------------------------- 6-8 C--------------------------------- 0.6-0.8 MO-------------------------------- 0.5-1.5 SI ------------------------------- 0-2 MN ------------------------------- 0-2