Titanium oxide raw material for welding material

Patent metadata

Field	Value
Publication number	US-9527168-B2
Application number	US-201213990302-A
Country	US
Kind code	B2
Filing date	Jan 25, 2012
Priority date	Feb 8, 2011
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

A titanium oxide raw material for a welding material, which can achieve the improvement in a bead shape and high-speed welding. The titanium oxide raw material has the form of particles and has a composition containing 58.0 to 99.0 mass % of TiO2, 2.5 mass % or less of Si, 3.0 mass % or less of Al, 5.0 mass % or less of Mn, 35.0 mass % or less of Fe, 5.0 mass % or less of Mg and 2.0 mass % or less of Ca, wherein the surface of each of the particles is coated with an oxide and/or a composite oxide of at least one element selected from Ti, Fe, Mn, Al and Si and the atom percentages of Ti, Fe, Mn, Al, Si and O in the oxide and/or the composite oxide fulfill the following three formulae.

1=Al+Si=10,

1<Ti/(Fe+Mn)=100,

O/(Fe+Mn)=100

First claim

The invention claimed is:

1. A particulate titanium oxide raw material, comprising relative to the total mass of the titanium oxide raw material:
from 58.0% to 99.0% by mass of TiO 2 ;
2.5% by mass or less of Si;
3.0% by mass or less of Al;
5.0% by mass or less of Mn;
35.0% by mass or less of Fe;
5.0% by mass or less of Mg; and
2.0% by mass or less of Ca,
wherein a surface of each particle comprises a composite oxide comprising Al and Si such that atomic percentages of Al and Si in the composite oxide satisfy the following formula:
1≦Al+Si≦10.

2. The titanium oxide raw material of claim 1 , wherein atomic percentages of Al and Si in the composite oxide satisfy 1.5≦Al+Si≦6.

3. The titanium oxide raw material of claim 1 , wherein atomic percentages of Ti, Fe, Mn, and O in the composite oxide satisfy the following formulae:
1<Ti/(Fe+Mn)≦100; and

O/(Fe+Mn)≦100.

4. The titanium oxide raw material of claim 2 , wherein atomic percentages of Ti, Fe, Mn, and O in the composite oxide satisfy the following formulae:
1<Ti/(Fe+Mn)≦100; and

O/(Fe+Mn)≦100.

Assignees

• Yamamoto Eri
• Masaie Norio
• Kataoka Akiyoshi
• Kobe Steel Ltd

Inventors

• Yamamoto Eri
• Masaie Norio
• Kataoka Akiyoshi

Classifications

• B22F1/16

  Metallic particles coated with a non-metal (coated with lubricating or binding agents or with organic material B22F1/10) · CPC title

• B23K35/3608

  Titania or titanates · CPC title

• B23K35/0244 Primary

  Powders, particles or spheres; Preforms made therefrom · CPC title

• B22F1/02

  Operations & Transport · mapped topic

• C22C29/12

  based on oxides · CPC title