Heat treatment device for elastic titanium-nickel alloy glasses leg linear blank

Abstract

The invention discloses a heat treatment device for an elastic titanium-nickel alloy glasses leg linear blank. The heat treatment device comprises a heat-resistant glass tube, a high-frequency coil and a protective gas introducing device, the heat-resistant glass tube is vertically arranged and provided with a through hole in the axial direction, the through hole comprises a feeding port and a discharging port, the high-frequency coil is wound around the outer circumferential face of the heat-resistant glass tube, and the protective gas introducing device is communicated with the through hole.The high-frequency coil is wound on the heat-resistant glass tube and is used for heating the heat-resistant glass tube, so that the environment temperature in the through hole serving as a linear blank passing path meets the heat treatment requirement. The protective gas introducing device is arranged, and protective gas is introduced into the through hole of the heat-resistant glass tube from agas hole in the heat-resistant glass tube, so that the linear blank is protected by the protective gas when passing through the through hole.

Description

technical field [0001] The invention relates to the technical field of spectacles production and processing, in particular to a heat treatment device for elastic titanium-nickel alloy spectacle leg linear blanks. Background technique [0002] In the prior art, the elastic titanium-nickel alloy spectacle leg linear blank made of titanium-nickel (TiNi) shape memory alloy material is usually placed on a tray during the annealing heat treatment before the calendering process after the wire drawing process Or heat treatment in a heat treatment furnace on a conveyor belt. Since the heating temperature usually reaches 350°C to 400°C and the heating time is short, affected by the contact surface between the linear billet and the tray or conveyor belt, the contact surface hinders the conduction of heat, and the linear billet often produces insufficient heat. Uniformity, which will affect the effect of heat treatment, making the temples processed by subsequent calendering less elasti...

AI Technical Summary

Problems solved by technology

Since the heating temperature usually reaches 350°C to 400°C and the heating time is short, affected by the contact surface between the linear billet and the tray or conveyor belt, the contact surface hinders the conduction of heat, and the linear billet often produces insufficient heat. Uniformity, which will affect the effect of heat treatment, making the temples of subsequent calendering less elastic

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