Rapid heating type heating furnace for surfacing welding of blast-furnace tuyere

Abstract

The utility model discloses a rapid-heating heating furnace for surfacing of a blast-furnace tuyere, relates to the technical field of heating furnaces, and aims to solve the problems that an existing heating furnace lacks an internal heat radiation reflection structure and function, and the overall heating speed needs to be increased. An upper cover is installed on the upper end opening of the outer furnace body in a covering and buckling mode, a ceramic plate is installed on the inner side of the upper cover in a clamped mode, a nichrome plate is riveted to the outer surface of one side of the ceramic plate through rivets, an interlayer between the ceramic plate and the upper cover is filled with rock wool blocks, and an inner furnace body is installed on the inner side of the outer furnace body. An arc-shaped heating groove is formed in the upper surface of the inner furnace body, a plurality of mounting grooves are formed in the inner wall of the arc-shaped heating groove, and resistance heating pipes are mounted in the mounting grooves in a buckled mode. And the effects that internal heat radiation can be reflected, waste of heat energy is avoided, and the heating speed can be effectively increased are achieved.

Description

Technical Field

[0001] This utility model relates to the field of heating furnace technology, and in particular to a heating furnace for rapid heating of blast furnace tuyeres for welding. Background Technology

[0002] In the iron and steel metallurgical industry, the blast furnace tuyere is one of the key components of blast furnace ironmaking equipment. The blast furnace tuyere is subjected to harsh working conditions such as high temperature, high speed airflow, and erosion by molten iron and slag for a long time. Its surface is easily worn and corroded, which leads to a significant reduction in service life. In order to extend the service life of the blast furnace tuyere, the overlay welding repair process has become an essential maintenance method. In the overlay welding process, a variety of equipment is required, including a heating furnace.

[0003] Existing heating furnaces lack internal heat radiation reflection structures and functions, and the overall heating speed needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a heating furnace for blast furnace tuyeres that can reflect internal heat radiation, thus avoiding heat waste and effectively improving heating speed.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A heating furnace for rapid heating of blast furnace tuyeres for welding includes an outer furnace body. An upper cover is fastened to the upper end of the outer furnace body. A ceramic plate is snapped onto the inner side of the upper cover. A nickel-chromium alloy plate is riveted to one outer surface of the ceramic plate. Rock wool blocks are filled in the interlayer between the ceramic plate and the upper cover.

[0007] By adopting the above technical solution, installation and operation can be flexible and convenient, and the heat radiation inside the heating furnace can be reflected, thereby improving the efficiency of heat energy utilization.

[0008] Furthermore, an inner furnace body is installed inside the outer furnace body. An arc-shaped heating groove is provided on the upper surface of the inner furnace body, and multiple mounting grooves are provided on the inner wall of the arc-shaped heating groove. A resistance heating tube is snapped into the inside of the mounting groove.

[0009] By adopting the above technical solution, a resistance heating tube can be used to heat the workpiece.

[0010] Furthermore, a controller is fixedly installed on one outer surface of the outer furnace body, and the resistance heating tube is electrically connected to the controller.

[0011] By adopting the above technical solution, the operation of the resistance heating tube can be controlled.

[0012] Furthermore, a second end cap is installed at one end of the outer furnace body.

[0013] By adopting the above technical solution, heating stability can be improved.

[0014] Furthermore, a first end cover is installed at one end of the outer furnace body.

[0015] By adopting the above technical solutions, heating stability can be effectively improved.

[0016] In summary, the beneficial technical effects of this utility model are as follows:

[0017] This invention utilizes the heat generated by the resistance heating tube to heat the workpiece during the heating process. Because a ceramic plate is snapped onto the inner wall of the upper cover, and a nickel-chromium alloy plate is installed on the inner wall of the ceramic plate, the heat radiation generated by the resistance heating tube can be reflected onto the workpiece using aluminum foil, thereby improving the efficiency of heat energy utilization and effectively improving the heating efficiency of the workpiece. This enables rapid heating operation and is highly practical. Attached Figure Description

[0018] Figure 1 This is a first-view perspective view of the three-dimensional structure of this utility model;

[0019] Figure 2 This is a second perspective view of the three-dimensional structure of this utility model.

[0020] In the diagram: 1. Outer furnace body; 2. Inner furnace body; 3. Mounting groove; 4. Resistance heating tube; 5. Top cover; 6. Rock wool block; 7. Ceramic plate; 8. First end cover; 9. Controller; 10. Second end cover. Detailed Implementation

[0021] The method of this utility model will be further described in detail below with reference to the accompanying drawings.

[0022] Reference Figure 1 , Figure 2A rapid heating furnace for blast furnace tuyeres welding includes an outer furnace body 1. An upper cover 5 is fastened to the upper end of the outer furnace body 1. A ceramic plate 7 is fastened to the inner side of the upper cover 5. A nickel-chromium alloy plate is riveted to one outer surface of the ceramic plate 7. Rock wool blocks 6 are filled in the interlayer between the ceramic plate 7 and the upper cover 5. An inner furnace body 2 is installed inside the outer furnace body 1. An arc-shaped heating groove is provided on the upper surface of the inner furnace body 2, and multiple mounting grooves 3 are provided on the inner wall of the arc-shaped heating groove. Resistance heating tubes 4 are fastened to the inside of the mounting grooves 3. During the heating process, the heat generated by the resistance heating tubes 4 can be used to heat the workpiece. Since the ceramic plate 7 is fastened to the inner wall of the upper cover 5 and the nickel-chromium alloy plate is installed on the inner wall of the ceramic plate 7, the heat radiation generated by the resistance heating tubes 4 can be reflected to the workpiece by aluminum foil, thereby improving the heat utilization efficiency and effectively improving the heating efficiency of the workpiece, realizing rapid heating operation, and having strong practicality.

[0023] Referring to Figure 1, a controller 9 is fixedly installed on one side of the outer surface of the outer furnace body 1. The resistance heating tube 4 is electrically connected to the controller 9. A second end cover 10 is installed at one end of the outer furnace body 1, and a first end cover 8 is installed at the other end of the outer furnace body 1. The controller 9 can be used to control the operation of the resistance heating tube 4.

[0024] Working principle: When in use, first install the heating furnace in the designated position, then place the workpiece with the weld overlay in the arc-shaped heating groove of the inner furnace body 2, and then use the resistance heating tube 4 to heat the workpiece. Since a ceramic plate 7 is snapped on the inner wall of the upper cover 5, and a nickel-chromium alloy plate is installed on the inner wall of the ceramic plate 7, the heat radiation generated by the resistance heating tube 4 can be reflected to the workpiece by the aluminum foil, thereby improving the utilization efficiency of heat energy. Then, the additional parts are welded onto the workpiece.

[0025] The specific real-time examples described herein are preferred real-time examples of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A heating furnace for rapid heating of blast furnace tuyeres for welding, comprising an outer furnace body (1), characterized in that: The upper end of the outer furnace body (1) is fitted with an upper cover (5), and a ceramic plate (7) is fitted on the inner side of the upper cover (5). A nickel-chromium alloy plate is riveted to one side of the outer surface of the ceramic plate (7). Rock wool blocks (6) are filled in the interlayer between the ceramic plate (7) and the upper cover (5).

2. The heating furnace for rapid heating blast furnace tuyeres welding according to claim 1, characterized in that: An inner furnace body (2) is installed on the inner side of the outer furnace body (1). An arc-shaped heating groove is provided on the upper surface of the inner furnace body (2), and multiple mounting grooves (3) are provided on the inner wall of the arc-shaped heating groove. A resistance heating tube (4) is installed inside the mounting groove (3).

3. The heating furnace for rapid heating blast furnace tuyeres welding according to claim 2, characterized in that: A controller (9) is fixedly installed on one side of the outer surface of the outer furnace body (1), and the resistance heating tube (4) is electrically connected to the controller (9).

4. A heating furnace for rapid heating of blast furnace tuyeres for welding according to claim 1, characterized in that: A second end cap (10) is installed at one end of the outer furnace body (1).

5. A rapid heating furnace for welding blast furnace tuyeres according to claim 1, characterized in that: A first end cap (8) is installed at one end of the outer furnace body (1).

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