公开(公告)号：US06547846B1

公开(公告)日：2003-04-15

申请号：US09806681

申请日：2001-04-04

Applicant: Leif Westin

Inventor： Leif Westin

IPC: B22F300

CPC classification number: C22C33/0264 ,  C21D1/18 ,  C21D1/84 ,  C21D7/13 ,  C21D8/005 ,  C22C33/02 ,  C22C38/22 ,  C22C38/24

Abstract: The invention relates to a steel with a high wear resistance, high hardness and good notched bar impact strength, useful for the manufacture of products, in the use of which at least some of the features are desirable, preferably for the manufacture of tools intended to be used at temperatures up to at least 500 ° C. The steel is produced powder-metallurgically and consists in percent by weight essentially of 0.55-0.65 C, 0.7-1.5 Si, 0.1-1.0 Mn, 3.5-4.5 Cr, 1.5-2.5 Mo, 1.5-2.5 W, 1.2-1.8 V, 0-0.2 Nb, balance iron and impurities in normal amounts. After hardening and tempering the steel contains 1.5-2.5 percent by volume of MC carbides, in which M consists essentially only of vanadium, the carbides being evenly distributed in the steel matrix. The invention also relates to use of the steel, manufacture and products manufactured from the steel.

Abstract translation: 本发明涉及一种具有高耐磨性，高硬度和良好的缺口棒冲击强度的钢，其用于制造产品，其中至少一些特征是期望的，优选用于制造旨在 在高达至少500℃的温度下使用。该钢粉末冶金地生产，其重量百分比基本上为0.55-0.65℃，0.7-1.5Si，0.1-1.0Mn，3.5-4.5Cr，1.5-2.5 Mo，1.5-2.5 W，1.2-1.8 V，0-0.2 Nb，余量为铁和正常量的杂质。 硬化和回火后，钢含有1.5-2.5％（体积）的MC碳化物，其中M仅主要由钒组成，碳化物均匀分布在钢基质中。 本发明还涉及钢，制造和由钢制成的产品的用途。

公开(公告)号：US20070023107A1

公开(公告)日：2007-02-01

申请号：US10581607

申请日：2004-12-06

Applicant: Leif Westin

Inventor： Leif Westin

IPC: C22C38/28

CPC classification number: C22C38/22 ,  C22C33/0285 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/24 ,  C22C38/26 ,  F16C33/30

Abstract: A steel material having a good resistance to corrosion, consisting of an alloy containing in % by weight: max 0.12 C 0.5-1.5 N 12-18 Cr max 0.5 Mn max 0.5 Ni 1-5 (Mo+W/2) max 1.5 (V+Nb/2+Ti) 0.1-0.5 Si from traces and up to max 2.0 Co from traces and up to max 0.1 S balance iron and essentially only impurities at normal contents.

Abstract translation: 最大0.12C 0.5-1.5N 12-18Cr最大0.5 Mn max 0.5 Ni 1-5（Mo + W / 2）最大1.5（含有重量％以上的合金） V + Nb / 2 + Ti）0.1-0.5 Si，痕量达到最大2.0 Co，最高为0.1 S平衡铁，基本上只含有正常含量的杂质。

公开(公告)号：US06818040B1

公开(公告)日：2004-11-16

申请号：US09979025

申请日：2001-11-15

Applicant: Odd Sandberg ,  Leif Westin

Inventor： Odd Sandberg ,  Leif Westin

IPC: B22F300

CPC classification number: C22C33/0278 ,  B22F2998/10 ,  B22F2999/00 ,  C21D1/18 ,  C21D6/00 ,  C21D2211/004 ,  C22C33/0292 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/36 ,  B22F9/082 ,  B22F1/0088 ,  C22C33/0207 ,  B22F3/15 ,  B22F3/16 ,  B22F2201/016

Abstract: A powder metallurgy manufactured high speed steel with a high content of nitrogen in the form of a body formed through consolidation of alloyed metal power has the chemical composition in weight-% ; 1-25 C, 1-3.5 N, 0.05-1.7 Mn, 0.05-1.2 Si, 3-6 Cr, 2-5 Mo, 0.05-5W, 6.2-1.7 (V+2 Nb), balance iron and unavoidable impurities in normal amounts, wherein the amount of, on one hand, the carbon equivalent, Ceq, expressed as formula (I), and, on the other hand, the vanadium equivalent, Veq, expressed as Veq=V+2 Nb, are balanced relative to each other such that the amounts of said elements, express in term of said equivalent, will lie within the area A1-B1-C1-D1-A1 in the system of co-ordinates in the figure, in which the Ceq/Veq-co-ordinates of the points A1-D1 are A1: 4.5/17; B1: 5.5/17; C1: 2.5/6.2; D1; 1.5/6.2. The structure of the steel in the hardened and tempered condition, contains 12-40 vol-% of hard matter consisting of particles of MX-type, which are evenly distributed in the matrix of the steel, where M in said hard matter of MX-type essentially consists of vanadium and/or niobium, and X consists of 30-50 weight-% carbon and 50-70 weight-% nitrogen.

Abstract translation: 粉末冶金制造的高速钢，具有以合金金属强度固结形成的主体形式的氮含量高，化学组成为重量百分比; 1-25℃，1-3.5N，0.05-1.7Mn，0.05-1.2Si，3-6Cr，2-5Mo，0.05-5W，6.2-1.7（V + 2Nb），余量为铁和不可避免的杂质 正常量，其中一方面碳当量Ceq，以式（I）表示，另一方面，钒当量Veq，表示为Veq = V + 2Nb，相对于 使得所述元素的量以所述等价物表示将在图中的坐标系中的区域A1-B1-C1-D1-A1内，其中Ceq / Veq- A1-D1点的坐标为A1：4.5 / 17; B1：5.5 / 17; C1：2.5 / 6.2; D1; 1.5 / 6.2。 钢在硬化和回火状态下的结构含有12-40vol％的由MX型颗粒组成的硬质物质，均匀分布在钢基体中，其中M在所述MX- 类型基本上由钒和/或铌组成，X由30-50重量％的碳和50-70重量％的氮组成。

公开(公告)号：US07700037B2

公开(公告)日：2010-04-20

申请号：US10581607

申请日：2004-12-06

Applicant: Leif Westin

Inventor： Leif Westin

IPC: C22C38/00

CPC classification number: C22C38/22 ,  C22C33/0285 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/24 ,  C22C38/26 ,  F16C33/30

Abstract: A steel material having a good resistance to corrosion, consisting of an alloy containing in % by weight: max 0.12 C 0.5-1.5 N 12-18 Cr max 0.5 Mn max 0.5 Ni 1-5 (Mo+W/2) max 1.5 (V+Nb/2+Ti) 0.1-0.5 Si from traces and up to max 2.0 Co from traces and up to max 0.1 S balance iron and essentially only impurities at normal contents.

Abstract translation: 最大0.12C 0.5-1.5N 12-18Cr最大0.5 Mn max 0.5 Ni 1-5（Mo + W / 2）最大1.5（含有重量％以上的合金） V + Nb / 2 + Ti）0.1-0.5 Si，痕量达到最大2.0 Co，最高为0.1 S平衡铁，基本上只含有正常含量的杂质。

公开(公告)号：US6162275A

公开(公告)日：2000-12-19

申请号：US331117

申请日：1999-06-17

Applicant: Karin Jonsson ,  Henry Wisell ,  Leif Westin

Inventor： Karin Jonsson ,  Henry Wisell ,  Leif Westin

IPC: C21D1/18 ,  C21D6/00 ,  C21D9/18 ,  C22C33/02 ,  C22C38/00 ,  C22C38/24

CPC classification number: C22C33/0264 ,  C21D1/18 ,  C21D6/002 ,  C21D9/18 ,  C21D2211/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24

Abstract: The invention relates to a steel having the following alloy composition in weight-%: 1.4-1.6 (C+N), max. 0.6 Mn, max. 1.2 Si, 3.5-4.3 Cr, 1.5-3 Mo, 1.5-3 W, wherein 6

Abstract translation: PCT No.PCT / SE98 / 00334 Sec。 371日期1999年6月17日第 102（e）日期1999年6月17日PCT提交1998年2月25日PCT公布。 公开号WO98 / 40180 PCT 日期：1998年9月17日本发明涉及具有重量％以下合金组成的钢：1.4-1.6（C + N），最大。 0.6 Mn，最大 1.2 Si，3.5-4.3 Cr，1.5-3 Mo，1.5-3 W，其中6

公开(公告)号：US4585619A

公开(公告)日：1986-04-29

申请号：US731045

申请日：1985-05-06

Applicant: Leif Westin

Inventor： Leif Westin

IPC: B22F1/00 ,  B22F3/15 ,  B22F3/24 ,  C22C33/02

CPC classification number: C22C33/02 ,  B22F1/0085 ,  B22F1/0096 ,  B22F3/15

Abstract: The invention relates to a powder metallurgical method for producing high speed steel products, the shape of which is close to the desired final shape of the product, i.e. according to the so called near net shape technique. The method comprises the following steps:(a) a starting powder consisting of high speed steel is soft annealed in a first annealing step in a non-oxidizing environment,(b) the soft annealed powder is fragmented mechanically,(c) the fragmented powder is annealed in the austenitic region of the steel in a second annealing step in a non-oxidizing environment thereby to improve the compactability of the fragmented powder by reducing its hardness and by forming aggregates of fragmented particles, compactability signifying the ability of the powder to form a manageable powder body, a so called green body,(d) the powder is compacted mechanically, after being annealed and having formed aggregates in said second annealing step, in a die to form a green body of the desired product shape,(e) the green body is sintered in a non-oxidizing environment until communicating porosity has been eliminated, and(f) the sintered body is subjected to hot isostatic compaction to full density.

Abstract translation: 本发明涉及一种用于制造高速钢产品的粉末冶金方法，其形状接近产品的期望的最终形状，即根据所谓的近净形状技术。 该方法包括以下步骤：（a）在非氧化环境中的第一退火步骤中，由高速钢组成的起始粉末进行软退火，（b）软退火的粉末机械地碎裂，（c）碎片粉末 在非氧化环境中的第二退火步骤中在钢的奥氏体区退火，从而通过降低其硬度和形成碎片颗粒的聚集体来提高碎片粉末的压实性，表明粉末形成的能力 （d）将所述粉末在退火后机械压实并在所述第二退火步骤中形成聚集体，在模具中形成所需产品形状的生坯，（e） 生坯在非氧化环境中烧结直至消除了连通孔隙，并且（f）将烧结体进行热等静压实至全密度。

公开(公告)号：US4569823A

公开(公告)日：1986-02-11

申请号：US592613

申请日：1984-03-23

Applicant: Leif Westin

Inventor： Leif Westin

IPC: B22F1/00 ,  B22F3/10 ,  C22C33/02 ,  B22F3/16 ,  B22F7/00

CPC classification number: B22F1/0014

Abstract: A powder metallurgical method of producing metal bodies using spherical powder, produced by inert gas atomization, from magnetizable material with a particle size distribution closely approximating the so called Fuller curve for maximum density packing of spherical particles. Said powder is magnetized and filled into a form, which may take place before or after magnetization, said mixed and magnetized powder then sintered in said form with the exclusion of air, to produce a sintered body without communicating porosity.

Abstract translation: 使用由惰性气体雾化产生的球形粉末的金属体的粉末冶金方法，可磁化材料的粒度分布近似于所谓的Fuller曲线，用于球形颗粒的最大密度填充。 所述粉末被磁化并填充成可以在磁化之前或之后发生的形式，然后将所述混合和磁化的粉末以排除空气的形式烧结，以产生不连通孔隙的烧结体。