Fukuda Metal Foil & Powder Co., Ltd.

Daihen Corporation

Technology Research Association for Future Additive Manufacturing

Hiroaki Okubo

Yoshito Nishizawa

Takeshi Maruyama

Akira Okamoto

Ryusuke Tsubota

Yohei Oka

Junichi Tanaka

Motonori Nishida

Yuji Sugitani

Masato Kikukawa

This invention provides a copper powder to which tin (Sn) is added such that a high-density laminated and shaped product can be obtained by a laminating and shaping method using a fiber laser as a heat source by appropriately reducing the electrical conductivity of copper, so a laminated and shaped product having a high density and a high electrical conductivity can be obtained. That is, this invention provides a copper powder for lamination shaping in which a tin element is added to pure copper. Desirably, the copper powder contains 0.5 wt % or more of the tin element. More desirably, the copper powder contains 5.0 wt % or more of the tin element. When the product has an electrical conductivity sufficient as a copper product, the copper powder desirably contains 6.0 wt % or less of the tin element. Furthermore, no element other than the tin element is desirably added to the copper powder.

Lamination shaping copper powder and laminated and shaped product

In this invention, a copper powder to which phosphorus (P) is added is developed such that a high-density laminated and shaped product can be obtained by a laminating and shaping method using a fiber laser as a heat source by appropriately reducing the electrical conductivity of copper, so a laminated and shaped product having a high density and a high electrical conductivity can be obtained. This invention is a copper powder for lamination shaping in which a phosphorus element is added to pure copper. The copper powder desirably contains 0.01 wt % or more of the phosphorus element. The copper powder more desirably contains 0.04 wt % or more of the phosphorus element. The copper powder desirably contains 0.30 wt % or less of the phosphorus element. The copper powder more desirably contains 0.24 wt % or less of the phosphorus element. No element other than the phosphorus element is desirably added to the copper powder.

A metal powder for additive manufacturing includes: not less than 0.2 mass % and not more than 1.3 mass % of aluminum; and a balance including copper and an incidental impurity.

Metal powder, method of producing additively-manufactured article, and additively-manufactured article

Growing community of inventors

Kyoto, Japan

Hiroaki Okubo