Method for producing timepiece spring, device for producing timepiece spring, timepiece spring, and timepiece
AssigneeSeiko Epson Corporation
InventorsKazuhiro TSUCHIYA, Masao TAKEUCHI, Masatoshi MOTEKI, Shoichi NAGAO
Life of this patent
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Abstract
A method for producing a timepiece spring includes a step for producing, by casting, a metallic glass raw material constituted of a metallic glass; a step for heating the metallic glass raw material to achieve a superplastic state; and a step for rolling the metallic glass raw material in a superplastic state to produce a sheet material. A timepiece spring is characterized by being obtained by the method for producing a timepiece spring.
Claims16
A method for producing a timepiece spring, comprising:
- producing, by casting, a metallic glass raw material constituted of a metallic glass;
- heating the metallic glass raw material to achieve a superplastic state;
- and
- rolling the metallic glass raw material in a superplastic state to produce a sheet material.
A method for producing a timepiece spring, comprising:
- using a cooling roll which includes a cooling section for rapidly solidifying a molten metallic glass stock material, a width dimension of the cooling section in a direction running along an axis of rotation being set to a width dimension of a sheet material of metallic glass;
- and
- ejecting the molten metallic glass stock material toward an outer peripheral surface of the cooling roll, which is rotating, and rapidly solidifying the ejected molten metallic glass stock material on the outer peripheral surface of the cooling roll to thereby form the sheet material of metallic glass.
A device for producing a timepiece spring, which device ejects a molten metallic glass stock material toward an outer peripheral surface of a rotating cooling roll and causes the ejected molten metallic glass stock material to be rapidly cooled on the outer peripheral surface of the cooling roll to thereby form a sheet material of metallic glass, wherein
- the cooling roll includes a cooling section for rapidly solidifying the molten metallic glass stock material, a width dimension of the cooling section in a direction running along an axis of rotation of the cooling roll being set to a width dimension of the sheet material.
Dependencies are inferred from the claim text.