Method for spraying marks on surface of high-temperature object

Abstract

The invention discloses a method for spraying marks on the surface of a high-temperature object. The method is characterized by comprising the following steps: establishing an X / Y / Z three-coordinate robot and an alternating-current servo control system, arranging an atomizing spray nozzle and a beam device at a positioning end of the three-coordinate robot, and spraying the surface of the high-temperature object by virtue of the beam device; extracting track coordinate data of characters or patterns of needed marks by virtue of a secondary developing function of AutoCad2004, feeding the track coordinate data into a computer and the alternating-current servo control system, performing data processing on the track coordinate data by virtue of the computer, transmitting the treated data to the alternating-current servo control system, and controlling the three-coordinate robot to move along the extracted track; and feeding the track coordinate data into the computer and a paint and spray nozzle control system, controlling the on and the off of the atomizing spray nozzle in the beam device to draw out the needed characters or patterns on the surface of the high-temperature object. The method disclosed by the invention has the advantages that the expressive force is rich, the characters and the patterns do not have phenomena such as trailing, blurring and adhering, and the reliability and the maintainability are good.

Description

technical field [0001] The invention relates to the technical field of high-temperature product marking, and is mainly applied to the surface marking of high-temperature products in the iron and steel industry, especially a method for spraying marking on the surface of high-temperature objects in a large-span temperature range. Background technique [0002] The production characteristics of metallurgical enterprises determine the main products they produce, including steel billets, plates / coils and various profiles. The surface temperature after production is very high, and, for different products, the surface temperature after rolling is The temperature varies greatly, and the highest temperature can reach nearly 1,000 degrees. For the surface marking of these products, most companies basically use manual spraying, lamination, or even hand-painting to attach the product's factory data to the product. The surface or side of the product to facilitate product identification a...

AI Technical Summary

Problems solved by technology

[0006] 1. Due to the adoption of the dot matrix method, it is required that the size of the dots sprayed by each nozzle is consistent and the spray volume is uniform, so as to ensure that the formed dot matrix characters or patterns are regular and beautiful. It is the way of hard contact and hard sealing between the valve needle and the nozzle. It is inevitable that there will be problems such as metal wear and nozzle leakage, as well as inconsistencies in the stroke and action time of the valve needle. , edges, shapes, etc., resulting in large differences, or even the lack of burrs and spray points, thus seriously affecting the appearance of product logos;

[0007] 2. At present, most of the coatings used in imported equipment are applied on the surface of objects with a temperature below 250°C. If the temperature is higher and reaches thousands of degrees, high-temperature coatings must be used. Currently, it can be applied to the surface of high-temperature objects. Most of them are water-based paints, which are difficult to be compatible with multi-way valve-controlled nozzle assemblies, that is, water-based high-temperature paints cannot be effectively used when multi-way valve-controlled nozzle assemblies are used for marking;

[0008] 3. When the dot-matrix marking equipment runs at high speed, it is easy to produce tailing or sticking of spray points, which will affect the marking effect;

[0009] 4. When the object to be marked has a wide range of surface temperature changes, especially for high-temperature objects above 300°C, it will be difficult for imported dot matrix marking equipment to take care of the surface marking work with excessive high and low temperature changes;

[0010] 5. The maintenance, replacement and commissioning of multi-way valve-controlled nozzle components are complicated and difficult;

[0011] 6. The purchase cost of imported equipment and the subsequent maintenance and operation costs are relatively high;

[0012] 7. Due to the constraints of the dot matrix, the ability to represent characters or patterns is extremely limited, and the patterns must be compiled and solidified in advance. For slightly more complicated characters and patterns, such as trademarks, it basically has no ability to express. It is also difficult to form a user's personalized logo

[0013] At present, the automatic marking of products in the domestic metallurgical industry is basically carried out with such equipment and methods, and it is basically applied on the surface of products below 300 ° C. For higher temperatures, special high-temperature coatings must be used. So far, there is no method and equipment that can use a paint and a set of equipment to complete the automatic marking of such a large-span range from normal temperature to 1300 ° C.

Images