Thermal bimetal material with security tag on surface and production method thereof

Abstract

The invention discloses a thermal bimetal material with a security tag on a surface and a production method thereof. The thermal bimetal material comprises an active alloy layer with a larger expansion coefficient and a passive alloy layer with a smaller expansion coefficient, the two alloy layers are firmly combined in the vertical direction, the outer surfaces of the alloy layers are provided with an ablative layer formed by high-energy pulses, the ablative layers are graphics or coded symbols capable of being read with an instrument, are a security tag formed via labeling on a product of thermal bimetal material through a set production line, and are information capable of being read and labeled with a scanning gun or compared with information stored in a computer to achieve the security effect. The security tag is attactive and clear, the surface quality of the product cannot be affected, the appearance and quality requirements of users can be better met, and the use requirements of users can be better met through adjusting output energy of the labeling device without affecting the intrinsic performance of the product. Moreover, the production method adopts a continuous streamline for operations, the degree of automation is high, the operation is convenient, the production efficiency is high, and the method is suitable for industrial production.

Description

technical field [0001] The invention relates to a heat-sensitive composite material used in the field of automatic control, in particular to a thermal bimetallic composite material that bends or rotates when the ambient temperature changes. Background technique [0002] Thermal bimetal is a metal composite material that is firmly bonded together by two or more layers of single metal alloys with different expansion coefficients. The alloy layer with a high expansion coefficient is called the active layer, and the alloy layer with a small expansion coefficient is called the passive layer. When the ambient temperature changes, due to the different expansion coefficients of the active layer and the passive layer, the thermal bimetal will bend or rotate to achieve the expected design action effect. Because of its heat-sensitive properties, this alloy is widely used in circuit breakers, switches, thermal relays, various temperature control components, home appliance protectors, e...

AI Technical Summary

Problems solved by technology

At present, the ink marks printed on the surface of the thermal bimetal only serve to distinguish the active and passive layers, and cannot achieve the anti-counterfeiting effect; if the inner material of the alloy is changed, such as adjusting the chemical composition content, it may play an anti-counterfeiting effect, but it is not intuitive. The probability of user approval is low, and it will change the performance of the product and affect the user's quality of use

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