公开(公告)号：KR101046419B1

公开(公告)日：2011-07-05

申请号：KR1020100055328

申请日：2010-06-11

Applicant: (주)씬터온

Inventor： 강병찬 ,  김대율 ,  오영규

IPC: B22F3/11 ,  B22F3/24 ,  F01L3/02

Abstract: PURPOSE: A valve seat and a manufacturing process thereof are provided to enable the whole matrix to be formed in a stably tempered martensite structure since the powder of two kinds of hard particles is added to Mo alloy powder forming a matrix and is sintering-tempered. CONSTITUTION: The powder of two kinds of dispersion-strengthened hard particles is added and mixed by 15-25 weight%, respectively(S10). The mixture is shaped using a press so that the mixture formed in the mixing process is set to a range of 6.7~7.1 g/cc in shaping density(S12). A product shaped in the shaping process is sintered(S14). Thermal treatment is performed after the sintering process finishes(S16). The thermal treatment process is a tempering process, in which the whole Mo Pre-alloyed matrix is formed in a reinforced martensite structure.

Abstract translation: 目的：提供一种阀座及其制造方法，由于将两种硬质颗粒的粉末添加到形成基质的Mo合金粉末中并进行烧结回火，所以能够将整个基体形成为稳定的回火马氏体组织。 构成：将两种分散强化硬颗粒的粉末分别加入并混合15-25重量％（S10）。 使用压机成型混合物，使得在混合过程中形成的混合物在成形密度下设定为6.7〜7.1g / cc的范围（S12）。 在成形过程中成形的产品被烧结（S14）。 烧结工序结束后进行热处理（S16）。 热处理工艺是一种回火工艺，其中整个Mo预合金基体以强化马氏体结构形成。

公开(公告)号：KR101046418B1

公开(公告)日：2011-07-05

申请号：KR1020100055327

申请日：2010-06-11

Applicant: (주)씬터온

Inventor： 강병찬 ,  김대율 ,  오영규

IPC: B22F3/12 ,  B22F3/24 ,  F01L3/02

Abstract: PURPOSE: A valve sheet and a manufacturing process thereof are provided to prevent the expansion of pores by remarkably increasing shear strength by forming an oxidized steel layer on the pores of a matrix through a steaming process. CONSTITUTION: A manufacturing process of a valve sheet is as follows. 10~20 weight% of dispersion-strengthened hard particle powder is added and mixed to/with HSS(High Speed Steel) powder forming a matrix(S10). Mixture mixed in the mixing process are molded using a press(S12). A molded product molded in the molding process is sintered, precipitation-strengthened hard particles are formed in the matrix(S14). A steaming process is performed after the sintering process, and ferrous oxide(Fe3O4) layer is formed on the pores of the matrix(S16).

Abstract translation: 目的：提供一种阀片及其制造方法，通过蒸汽处理在基质的孔中形成氧化钢层，显着提高剪切强度，防止孔膨胀。 构成：阀片的制造过程如下。 加入10〜20重量％的分散强化的硬质颗粒粉末，并与形成基质的HSS（高速钢）粉末混合（S10）。 在混合过程中混合的混合物使用压制成型（S12）。 在模塑过程中模制的模塑产品被烧结，在基质中形成沉淀强化的硬质颗粒（S14）。 在烧结过程之后进行蒸煮处理，在基体的孔中形成氧化亚铁（Fe3O4）层（S16）。