Free-Machining Powder Metallurgy Steel Articles and Method of Making Same
    3.
    发明申请
    Free-Machining Powder Metallurgy Steel Articles and Method of Making Same 有权
    自由加工粉末冶金钢制品及其制造方法

    公开(公告)号:US20100068547A1

    公开(公告)日:2010-03-18

    申请号:US12558066

    申请日:2009-09-11

    IPC分类号: B32B15/02 B22F5/12 B22F3/24

    摘要: A small diameter, elongated steel article, comprising fully consolidated, prealloyed metal powder is disclosed. The consolidated metal powder has a microstructure that has a substantially uniform distribution of fine grains having a grain size of not larger than about 9 when determined in accordance with ASTM Standard Specification E 112. The microstructure of the consolidated metal powder is further characterized by having a plurality of substantially spheroidal carbides uniformly distributed throughout the consolidated metal powder that are not greater than about 6 microns in major dimension and a plurality of sulfides uniformly distributed throughout the consolidated metal powder wherein the sulfides are not greater than about 2 microns in major dimension. A process for making the elongated steel article is also disclosed.

    摘要翻译: 公开了一种包括完全固结的预合金金属粉末的小直径细长钢制品。 固结的金属粉末具有根据ASTM标准规范E 112确定时具有基本均匀分布的具有不大于约9的粒度的微细颗粒的微结构。固结金属粉末的微结构进一步的特征在于具有 多个基本上球形的碳化物均匀分布在整个金属粉末中,其主要尺寸不大于约6微米,并且多个硫化物均匀分布在整个固结的金属粉末中,其中硫化物在主要尺寸上不大于约2微米。 还公开了制造细长钢制品的方法。

    Free-machining powder metallurgy steel articles and method of making same
    4.
    发明授权
    Free-machining powder metallurgy steel articles and method of making same 有权
    自由加工粉末冶金钢制品及其制造方法

    公开(公告)号:US08795584B2

    公开(公告)日:2014-08-05

    申请号:US13592541

    申请日:2012-08-23

    摘要: A small diameter, elongated steel article, comprising fully consolidated, prealloyed metal powder is disclosed. The consolidated metal powder has a microstructure that has a substantially uniform distribution of fine grains having a grain size of not larger than about 9 when determined in accordance with ASTM Standard Specification E 112. The microstructure of the consolidated metal powder is further characterized by having a plurality of substantially spheroidal carbides uniformly distributed throughout the consolidated metal powder that are not greater than about 6 microns in major dimension and a plurality of sulfides uniformly distributed throughout the consolidated metal powder wherein the sulfides are not greater than about 2 microns in major dimension. A process for making the elongated steel article is also disclosed.

    摘要翻译: 公开了一种包括完全固结的预合金金属粉末的小直径细长钢制品。 固结的金属粉末具有根据ASTM标准规范E 112确定时具有基本均匀分布的具有不大于约9的粒度的微细颗粒的微结构。固结金属粉末的微结构进一步的特征在于具有 多个基本上球形的碳化物均匀分布在整个金属粉末中,其主要尺寸不大于约6微米,并且多个硫化物均匀分布在整个固结的金属粉末中,其中硫化物在主要尺寸上不大于约2微米。 还公开了制造细长钢制品的方法。

    Free-Machining Powder Metallurgy Steel Articles and Method of Making Same
    5.
    发明申请
    Free-Machining Powder Metallurgy Steel Articles and Method of Making Same 有权
    自由加工粉末冶金钢制品及其制造方法

    公开(公告)号:US20120321500A1

    公开(公告)日:2012-12-20

    申请号:US13592541

    申请日:2012-08-23

    IPC分类号: B22F5/00 B22F3/12 B22F3/24

    摘要: A small diameter, elongated steel article, comprising fully consolidated, prealloyed metal powder is disclosed. The consolidated metal powder has a microstructure that has a substantially uniform distribution of fine grains having a grain size of not larger than about 9 when determined in accordance with ASTM Standard Specification E 112. The microstructure of the consolidated metal powder is further characterized by having a plurality of substantially spheroidal carbides uniformly distributed throughout the consolidated metal powder that are not greater than about 6 microns in major dimension and a plurality of sulfides uniformly distributed throughout the consolidated metal powder wherein the sulfides are not greater than about 2 microns in major dimension. A process for making the elongated steel article is also disclosed.

    摘要翻译: 公开了一种包括完全固结的预合金金属粉末的小直径细长钢制品。 固结的金属粉末具有根据ASTM标准规范E 112确定时具有基本均匀分布的具有不大于约9的粒度的微细颗粒的微结构。固结金属粉末的微结构进一步的特征在于具有 多个基本上球形的碳化物均匀分布在整个金属粉末中,其主要尺寸不大于约6微米,并且多个硫化物均匀分布在整个固结的金属粉末中,其中硫化物在主要尺寸上不大于约2微米。 还公开了制造细长钢制品的方法。

    Free-machining powder metallurgy steel articles and method of making same
    6.
    发明授权
    Free-machining powder metallurgy steel articles and method of making same 有权
    自由加工粉末冶金钢制品及其制造方法

    公开(公告)号:US08282701B2

    公开(公告)日:2012-10-09

    申请号:US12558066

    申请日:2009-09-11

    IPC分类号: B22F5/12 C22C33/02

    摘要: A small diameter, elongated steel article, comprising fully consolidated, prealloyed metal powder is disclosed. The consolidated metal powder has a microstructure that has a substantially uniform distribution of fine grains having a grain size of not larger than about 9 when determined in accordance with ASTM Standard Specification E 112. The microstructure of the consolidated metal powder is further characterized by having a plurality of substantially spheroidal carbides uniformly distributed throughout the consolidated metal powder that are not greater than about 6 microns in major dimension and a plurality of sulfides uniformly distributed throughout the consolidated metal powder wherein the sulfides are not greater than about 2 microns in major dimension. A process for making the elongated steel article is also disclosed.

    摘要翻译: 公开了一种包括完全固结的预合金金属粉末的小直径细长钢制品。 固结的金属粉末具有根据ASTM标准规范E 112确定时具有基本均匀分布的具有不大于约9的粒度的微细颗粒的微结构。固结金属粉末的微结构进一步的特征在于具有 多个基本上球形的碳化物均匀分布在整个金属粉末中,其主要尺寸不大于约6微米,并且多个硫化物均匀分布在整个固结的金属粉末中,其中硫化物在主要尺寸上不大于约2微米。 还公开了制造细长钢制品的方法。