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A preparation method of titanium-nickel alloy anti-counterfeiting mark with hidden information

An anti-counterfeiting mark, titanium-nickel technology, applied in the field of anti-counterfeiting marks, can solve problems such as limited application, and achieve the effects of convenient detection, improved imitation difficulty, and simple and reasonable structure

Inactive Publication Date: 2016-05-04
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned studies all have a common feature: the titanium-nickel shape memory alloy must be treated at low temperature (-20°C) before pressing the pits to ensure that the initial phase of the titanium-nickel shape memory alloy is a martensitic phase during the experiment, which limits its application

Method used

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  • A preparation method of titanium-nickel alloy anti-counterfeiting mark with hidden information
  • A preparation method of titanium-nickel alloy anti-counterfeiting mark with hidden information
  • A preparation method of titanium-nickel alloy anti-counterfeiting mark with hidden information

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preparation example Construction

[0019] A method for preparing anti-counterfeiting marks of titanium-nickel alloys with hidden information. The anti-counterfeiting marks of titanium-nickel shape memory alloy materials are prepared by using titanium-nickel shape memory alloy rods containing Ti with an atomic ratio of 50.9%. The initial phase of the material is Mixed phase of martensite and austenite; cf. figure 1 , the specific process includes the following steps:

[0020] Step 1, the preparation of male die,

[0021] Before using the mechanical pressing method to press the pit pattern on the surface of the titanium-nickel material with shape memory effect, it is necessary to prepare a positive mold. The preparation process of the positive mold is as follows: first process the basic mold with the anti-counterfeiting pattern, and then blow dry after ultrasonic cleaning to remove surface oil and other attachments; evenly coat a layer of adhesive on the end face of the basic mold, Stick the steel ball d to the...

Embodiment 1

[0028] image 3 It is the physical picture of the pit pattern and the raised pattern of the anti-counterfeiting component in the first embodiment of the present invention, and Fig. 4 is the 3D view of the pressed pit and the raised bump after mechanical polishing and heating in the first embodiment of the present invention.

[0029] Step 1. Preparation of positive mold

[0030] The production process of the male mold used in the test is as follows: put the circular steel base mold with a diameter of 10-30mm and a thickness of 5mm with anti-counterfeiting patterns into alcohol and acetone in sequence, and ultrasonic cleaning for 10 minutes each to remove surface oil and dirt. After other attachments, dry them; apply a layer of adhesive evenly on the end face of the steel sheet, and quickly stick a GCr15 steel ball with an appropriate diameter to the corresponding end face; press a 10-100kg steel plate on the steel ball On the plane, until the steel ball is firmly bonded to the...

Embodiment 2

[0036] Step 1. Preparation of positive mold

[0037] The male mold used in the test is selected from the existing commercialized molds, and its surface features are raised numbers 1-9, refer to Figure 2(b).

[0038] Step 2. Preparation of anti-counterfeiting labels

[0039] Using the above-mentioned commercialized male die, the surface of the TiNi alloy cylinder with a diameter of 6 mm is mechanically pressed to form a pit surface, and the surface of the TiNi alloy is pressed with a digital pattern of pits. Sandpaper and canvas were used to mechanically polish the surface of the titanium-nickel alloy sample after pressing micropores. The polishing depth is until the pit pattern on the surface of the titanium-nickel alloy disappears, and the surface roughness is about 0.12 μm. According to the degree of pattern suppression, the mechanically polished titanium-nickel shape memory alloy can be cut into several slices implying a pattern or a group of characters by wire cutting me...

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Abstract

A method for manufacturing a titanium-nickel alloy anti-counterfeiting label carried with implicit information is that pit patterns are pressed on the surface of a titanium-nickel shape memory alloy material having the shape memory effect through a male die with anti-counterfeiting patterns, then the surface of the titanium-nickel shape memory alloy material provided with the pit patterns is subjected to mechanical polishing till pits on the titanium-nickel alloy surface disappear. Therefore, the pattern information implied in the material cannot be seen through naked eyes or microscopes, X-ray and other physical and chemical means by viewing from the appearance, and the anti-counterfeiting purpose is achieved. A titanium-nickel alloy anti-counterfeiting label sheet manufactured by means of the method can display the implicit information when being heated to be higher than Af, an anti-counterfeiting identification function is achieved, and the method is simple and reasonable, and the detection operation is convenient.

Description

technical field [0001] The invention relates to an anti-counterfeit mark for industries such as automobiles and equipment, and in particular to a method for preparing a titanium-nickel alloy anti-counterfeit mark with hidden information. Background technique [0002] Counterfeit and shoddy products are increasingly becoming a major obstacle to social development, seriously affecting the social and economic order, becoming a global problem, seriously dampening the enthusiasm of research and development of new technology personnel, and posing a serious threat to innovation. Commodity counterfeiting, especially counterfeiting in the pharmaceutical and food industries, directly endangers people's life, health, and even life safety. [0003] At present, there are many patents on the use of heat-driven shape memory effect for anti-counterfeiting indication. Patents CN101916528B and CN102024379A propose a method for making a shape memory anti-counterfeiting mark. However, this me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00G09F3/02
CPCB41K3/04
Inventor 董光能唐光海张俊锋
Owner XI AN JIAOTONG UNIV
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