High-temperature durable lossless marking method for titanium alloy part

Abstract

The invention belongs to the field of marking processes, and particularly relates to a high-temperature durable lossless marking method for a titanium alloy part. According to the technical scheme, the high-temperature lasting lossless marking method for the titanium alloy part comprises the steps that code spraying marking is conducted on the marking position of the titanium alloy part, and then paint spraying protection is conducted on the marking area. According to the high-temperature durable lossless marking method for the titanium alloy part, a clear identifiable mark can be formed, the marking durability in a high-temperature service environment is improved, part marking damage is effectively avoided, and the service safety of the titanium alloy part is enhanced.

Description

Technical Field

[0001] The invention belongs to the field of marking technology, and in particular relates to a high-temperature, long-lasting and non-destructive marking method for titanium alloy parts. Background Art

[0002] Inkjet marking is a method of marking on the surface of an object using inkjet technology. The ink is sprayed onto the target object using the nozzle of an inkjet printer, which can achieve high-definition and high-speed marking effects. It has the characteristics of editable marking content, strong adaptability, and simple operation. However, the current high-temperature resistant ink can only withstand about 200°C, and will be removed when encountering organic solvents such as alcohol, so it is impossible to achieve permanent marking on aircraft engine parts.

[0003] Titanium alloys are widely used in aircraft engine blades, casings, disks and shafts due to their high temperature resistance, high specific strength, good corrosion resistance and small thermal expansion coefficient. However, titanium alloys are highly notch-sensitive and have high requirements for the integrity of the processed surface. The selection of processing methods should avoid damage to the parts.

[0004] For titanium alloy parts of aircraft engines, the selection of marking methods should consider not destroying the surface integrity, the marking can be clearly identified after high-temperature service, and can resist airflow erosion. The electrolytic marking process currently used destroys the surface integrity of the parts to a certain extent, and the marking clarity is not as good as the inkjet marking. The oxidation mark on the surface of the parts after high-temperature service is difficult to identify. As a semi-permanent marking method, inkjet marking will not cause damage to the parts, but there is a problem that it is difficult to maintain a high-temperature service environment. Summary of the invention

[0005] The present invention provides a high-temperature, durable and non-destructive marking method for titanium alloy parts, which can form a clear and identifiable mark, improve the durability of marking in a high-temperature service environment, effectively avoid marking damage to parts, and enhance the service safety of titanium alloy parts.

[0006] The technical solution of the present invention is as follows:

[0007] A high-temperature, long-lasting and non-destructive marking method for titanium alloy parts is provided. The marking position of the titanium alloy part is sprayed with code and then the marking area is protected by spraying paint.

[0008] Furthermore, the method for high-temperature, long-lasting and non-destructive marking of titanium alloy parts comprises the following steps:

[0009] Step 1: Parts preparation: clean the parts and wipe them with acetone if necessary;

[0010] Step 2: Spray code and mark the parts; spray code and mark the titanium alloy parts at the marking position;

[0011] Step 3: Protection before painting: Protect the non-painting area around the marking area;

[0012] Step 4: Prepare the varnish; choose a varnish that is insoluble in the inkjet printing and is resistant to high temperatures of 450°C, and stir it thoroughly to mix it evenly;

[0013] Step 5: Spray paint on the marking area;

[0014] Step 6: Post-painting treatment: dry and solidify at room temperature or bake;

[0015] Step 7: Check the marking: Check whether the marking is clear;

[0016] Step 8: Parts cleaning: Use compressed air to clean the parts and remove particles attached to the surface.

[0017] Furthermore, in the method for high-temperature, long-lasting and non-destructive marking of titanium alloy parts, in step three, a silicone film is used to protect the non-painted area.

[0018] Furthermore, in the method for high-temperature, long-lasting and non-destructive marking of titanium alloy parts, in step 4, the varnish is polyurethane varnish and is stirred for 10 to 15 minutes.

[0019] Furthermore, in the method for high-temperature, long-lasting and non-destructive marking of titanium alloy parts, in step five, the spraying pressure is 0.2MPa-0.6MPa, the spraying distance of the spray gun is 100-200mm, the spraying angle is perpendicular to the surface of the part, and the number of spraying times is less than 3 times.

[0020] Furthermore, in the method for high-temperature, long-lasting and non-destructive marking of titanium alloy parts, in step six, a method of drying at 120° C. for 1 hour is adopted.

[0021] The beneficial effects of the present invention are as follows: the high-temperature, long-lasting, non-destructive marking method for titanium alloy parts of the present invention can form a clear and recognizable mark, improve the durability of marking in a high-temperature service environment, effectively avoid damage to the marking of parts, and enhance the service safety of titanium alloy parts. DETAILED DESCRIPTION

[0022] A high-temperature, long-lasting, non-destructive marking method for titanium alloy parts, which implements code marking at the marking position of the titanium alloy parts, and then sprays paint to protect the marking area. Specifically, it includes the following steps:

[0023] Step 1: Parts preparation: clean the parts and wipe them with acetone if necessary;

[0024] Step 2: Spray code and mark the parts; spray code and mark the titanium alloy parts at the marking position;

[0025] Step 3: Protection before painting: Use silicone film to protect the non-painting area around the marking area;

[0026] Step 4: Prepare the varnish: Select a polyurethane varnish that is insoluble in inkjet printing and resistant to high temperatures of 450°C, and stir for 10 to 15 minutes to mix it evenly;

[0027] Step 5: Spray paint; spray paint on the marking area, the spray pressure is 0.2MPa~0.6MPa, the spray distance of the spray gun is 100~200mm, the spray angle is perpendicular to the surface of the part, and the number of spraying times is less than 3 times;

[0028] Step 6: Post-painting treatment: drying at 120℃ for 1h to solidify;

[0029] Step 7: Check the marking: Check whether the marking is clear;

[0030] Step 8: Parts cleaning: Use compressed air to clean the parts and remove particles attached to the surface.

Claims

1. A high-temperature, long-lasting, non-destructive marking method for titanium alloy parts, characterized in that: The marking area of ​​the titanium alloy parts is sprayed with code and then protected with paint.

2. The high-temperature, long-lasting, non-destructive marking method for titanium alloy parts according to claim 1 is characterized in that: The steps include: Step 1: Parts preparation: clean the parts and wipe them with acetone if necessary; Step 2: Spray code and mark the parts; spray code and mark the titanium alloy parts at the marking position; Step 3: Protection before painting: Protect the non-painting area around the marking area; Step 4: Prepare the varnish; choose a varnish that is insoluble in the inkjet printing and is resistant to high temperatures of 450°C, and stir it thoroughly to mix it evenly; Step 5: Spray paint on the marking area; Step 6: Post-painting treatment: dry and solidify at room temperature or bake; Step 7: Check the marking: Check whether the marking is clear; Step 8: Parts cleaning: Use compressed air to clean the parts and remove particles attached to the surface.

3. The high-temperature, long-lasting, non-destructive marking method for titanium alloy parts according to claim 2 is characterized in that: In the step three, a silicone film is used to protect the non-painting area.

4. The high temperature, long-lasting and non-destructive marking method for titanium alloy parts according to claim 2 is characterized in that: In the step 4, the varnish is polyurethane varnish and stirred for 10 to 15 minutes.

5. The high temperature, long-lasting and non-destructive marking method for titanium alloy parts according to claim 2 is characterized in that: In the step five, the spraying pressure is 0.2MPa-0.6MPa, the spraying distance of the spray gun is 100-200mm, the spraying angle is perpendicular to the surface of the part, and the spraying times are less than 3 times.

6. The high temperature, long-lasting and non-destructive marking method for titanium alloy parts according to claim 2 is characterized in that: In the step six, a method of drying at 120° C. for 1 hour is adopted.