A high-temperature heat treatment-resistant data Matrix code label and its manufacturing method

Abstract

The invention provides a high temperature heat treatment resistant DM code label and a manufacturing method thereof. The manufacturing method comprises the following steps: coating a uniform, compact and tightly-bound golden yellow ZrN coating on the surface of TC4 titanium alloy as a label, controlling the thickness of the ZrN coating in a range of 1 um to 10 um, and engraving a DM code on the ZrN coating with a fiber laser through a back engraving technique so as to form the high temperature heat treatment resistant DM code label. The DM code is in accord with the DM code in a part, then the label is placed on the part, a heat treatment is carried out on the label and the part, and the DM code is transferred to the part after the heat treatment. The method that the matrix surface is directly engraved in the prior art is changed by the manufacturing method provided by the invention; the manufacturing method first deposits a high temperature resistant film on a matrix surface through a physical method, then carries out a laser labeling method; the high temperature heat treatment resistant performance of the DM code label formed by the manufacturing method is largely improved; besides the manufacturing method is suitable for being used under a high temperature environment, the coating tightly binds with the matrix, the parts processed by the manufacturing method are suitable for being subjected to a stress relief treatment, an aging treatment and a tempering treatment.

Description

technical field [0001] The invention relates to the field of sign protection, specifically a high-temperature heat-resistant Data Matrix code label and a manufacturing method thereof, so as to realize reading of DM codes on the surface of metal materials after heat treatment such as high-temperature solid solution, aging, tempering, stress relief, or water quenching Sexual failure protection. Background technique [0002] Data Matrix technology has been widely used in the field of marking of aviation and aerospace parts. However, it is still an unsolved problem to realize the whole process tracking of parts from blank to finished product, mainly because the DM code directly marked on the surface of the part is After undergoing heat surface treatment, cleaning and other harsh environments, it often becomes ineffective, or the DM code marked on the surface of the part undergoes heat surface treatment due to the coverage of the oxide layer, resulting in a sharp decline in reada...

AI Technical Summary

Problems solved by technology

Secondly, the transparent layer tends to denature or even vaporize in a high temperature environment, thus losing its protective effect

[0007] 3. The two-dimensional code formed by deep micro-milling on the surface of the part has good resistance to heat treatments such as tempering, quenching, and aging at a temperature not higher than 500°, but the effect of this method will decrease as the heat treatment temperature continues to increase. dropped sharply, and the method proved to be ineffective when tempering at a temperature of 750°±15°

Secondly, the surface of the part often has requirements such as size and roughness. In order to meet the reading requirements, deep micro-milling often conflicts with the requirements of the size and roughness of the part surface.

[0008] 4. Most of these methods realize the protection of the DM code during the heat treatment process by changing the marking method of the two-dimensional code on the surface of the part. However, the marking method in the production process is often limited. These methods are suitable for harsh environments such as high temperature heat treatment. The protection against the DM code marked on the surface of the part is invalid

If this method is applied to the DM code directly marked on the surface of stainless steel and titanium alloy parts by laser to realize the DM code protection against high temperature heat treatment, there will be the following disadvantages: First, the coating with conventional paint is generally higher than 200 ° environmental decline and gasification can not achieve the protective effect, coated with high temperature resistant organic paint, then after high temperature heat treatment, the high temperature resistant organic paint will be difficult to remove and the DM code will be exposed again; second, even if the party removes the high temperature resistant paint Finally, the DM code can be re-exposed. The DM code under the paint is often removed due to the denaturation of the paint at high temperature and the bonding with the substrate, resulting in the residue polluting the DM code and making it difficult to read; third, The price of high-temperature-resistant organic paint is often high, and this method cannot be reused, and the economic effect is not good

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