Panasonic Intellectual Property Management Co., Ltd.

Naoki Kohyama

Tomohiro Kanazawa

Yoshihiro Iguchi

Tetsuji Shibata

Kenshi Tsuji

Yui Nakai

Kazushige Sugita

Yuuki Sasagawa

Hiroshi Gouda

Atsushi Shimada

Yoshiyuki Kita

Toshiyuki Tani

Tetsuya Nakaaze

Akitoshi Kasahara

A tungsten wire contains tungsten or a tungsten alloy. An average width of surface crystal grains in a direction perpendicular to an axis of the tungsten wire is at most 76 nm. The tungsten wire has a tensile of at least 4800 MPa, and a diameter of at most 100 μm.

Tungsten wire and saw wire

A tungsten wire that contains tungsten or a tungsten alloy is provided. An average width of surface crystal grains in a direction perpendicular to an axis of the tungsten wire is at most 98 nm. The tungsten wire has a tensile strength of at least 3900 MPa. The tungsten wire has a diameter of at least 100 μm and at most 225 μm.

Tungsten wire, saw wire, and tungsten wire for screen printing

A metal wire, which is one of a tungsten wire and a tungsten alloy wire, includes alkali metal on the surface thereof. The amount of alkali metal is at most 2.0 μg per 1 g of the metal wire.

Metal wire

A tungsten wire is a tungsten wire containing tungsten or a tungsten alloy, a diameter of the tungsten wire is at most 100 &#x3bc;m, and a total number of torsional rotations to breakage per length of 50 mm of the tungsten wire is greater than or equal to 250&#xd7;exp(&#x2212;0.026&#xd7;D) when a tension that is 50% of a breakage tension of the tungsten wire is applied as a load, D denoting the diameter of the tungsten wire.

Tungsten wire and tungsten product

A metal wire containing tungsten is provided. A tungsten content of the metal wire is at least 90 wt %. A tensile strength of the metal wire is at least 4000 MPa. An elastic modulus of the metal wire is at least 350 GPa and at most 450 GPa. A diameter of the metal wire is at most 60 &#x3bc;m. An average crystal grain size of the metal wire in a cross-section orthogonal to an axis of the metal wire is at most 0.20 &#x3bc;m.

Metal wire, saw wire, cutting apparatus, and method of manufacturing metal wire

A saw wire and various methods of use and manufacture are provided. The saw wire includes a metal wire containing at least one of tungsten and a tungsten alloy. A nickel plating layer is provided over the metal wire. An adhesion layer is provided at an interface between the metal wire and the nickel plating layer. The adhesion layer contains nickel and tungsten. A plurality of abrasive particles are provided at a surface of the nickel plating layer.

Saw wire and cutting apparatus

A saw wire includes a metal wire containing rhenium-tungsten alloy. A rhenium content of the metal wire is at least 0.1 wt % and at most 10 wt % with respect to a total weight of rhenium and tungsten, an elastic modulus of the metal wire is at least 350 GPa and at most 450 GPa, a tensile strength of the metal wire is at least 3500 MPa, and a diameter of the metal wire is at most 60 &#x3bc;m.

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Osaka, Japan

Naoki Kohyama