Crack repairing structure of copper smelting slag slow-cooling slag ladle

Abstract

The utility model provides a crack repairing structure of a copper smelting slag slow-cooling slag ladle, a crack penetrating through the slag ladle wall is formed on the slag ladle wall, in order to completely repair the penetrating crack on the slag ladle wall, V-shaped grooves with outward openings are dug inwards on the two sides of a fracture on the outer side of the crack, the V-shaped grooves are welded firstly, then the V-shaped grooves are welded, and the V-shaped grooves are welded on the outer side of the slag ladle wall. And then repair welding is carried out on the cracks on the inner wall side, complete repair of the through cracks on the cinder ladle wall is achieved, and the service life of the repaired cinder ladle is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of mining equipment repair, in particular to a crack repair structure for a slow-cooling slag bag of copper smelting slag. Background Art

[0002] During the smelting process, the slag ladle, as a container for high-temperature metallurgical slag, is a crucial piece of equipment in the metallurgical slag treatment process. However, during long-term use, the inner wall of the slag ladle will be eroded and corroded by the high-temperature molten slag. Under the effects of thermal expansion and contraction as well as corrosion, cracks of varying lengths and depths will form on the inner wall of the slag ladle. When the cracks deepen and form through-cracks, they can only be discovered by staff. Therefore, to ensure the safe use of the slag ladle, through-cracks must be repaired. However, since the thickness of the slag ladle itself is 6mm, the crack depth is 6mm and the crack width is 2mm. Using conventional welding methods, after surfacing welding on the cracks in the slag ladle, the weld strength is insufficient. During use, due to the effects of thermal expansion and contraction, the weld scar easily falls off, resulting in a short service life and a high rework rate for the repaired slag ladle. Utility Model Content

[0003] The utility model provides a crack repair structure for a slow-cooling slag ladle of copper smelting slag, aiming to completely repair penetrating cracks on the slag ladle and extend the service life of the repaired slag ladle.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A crack repair structure for a slow-cooling slag ladle of copper smelting slag is provided. The outer seam opening of a crack passing through the slag ladle wall is formed into a V-shaped groove with an opening facing outward. The V-shaped groove is welded, and repair welding is performed on the cracks on the inner wall side.

[0006] In the above scheme, cracks penetrating the slag bag wall are formed on the slag bag wall. In order to completely repair the penetrating cracks on the slag bag wall, V-shaped grooves with openings facing outward are dug inward on both sides of the outer fracture of the cracks. The V-shaped grooves are first welded, and then the side cracks on the inner wall are repaired by welding, so as to achieve complete repair of the penetrating cracks on the slag bag wall and extend the service life of the slag bag after repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the crack structure of the slag bag in the utility model;

[0008] Figure 2 、 Figure 3 、 Figure 4 It is a schematic diagram of the crack repair structure of the slag bag in the utility model. DETAILED DESCRIPTION

[0009] like Figures 1 to 4The crack repair structure of a copper smelting slag slow cooling slag ladle shown in the figure has a crack 10 penetrating the slag ladle wall 1 and an outer seam opening formed as a V-shaped groove 11 opening outward. The V-shaped groove 11 is welded and repair welding is performed on the crack 12 on the inner wall side.

[0010] In the above scheme, there is a crack 10 running through the slag bag wall 1. First, a V-shaped groove 11 with an opening facing outward is dug inward on both sides of the outer seam of the crack 10. The inner side of the V-shaped groove 11 is the inner wall side crack 12. The setting of the V-shaped groove 11 facilitates the cleaning of the crack 10. At the same time, welding is performed at the V-shaped groove 11, and then repair welding is performed on the inner wall side crack 12 to ensure that the weld is formed from the inner side fracture of the crack 10 and filled in the inner wall side crack 12 on the inner side of the V-shaped groove 11 and the V-shaped groove 11, thereby completely repairing the crack 10.

[0011] Furthermore, since the thickness of the slag ladle wall 1 itself is 6 mm, and the depth of the crack 10 running through the slag ladle wall 1 is 6 mm and the crack width is usually 2 mm, it is preferred that the groove depth of the V-shaped groove 11 is 2 / 3 of the thickness of the slag ladle wall 1, and the depth of the inner wall side crack 12 is equal to the crack width.

[0012] In the above scheme, the groove depth of the V-shaped groove 11 is 2 / 3 of the thickness of the slag bag wall 1. Therefore, the groove depth of the V-shaped groove 11 is 4 mm, and the depth of the inner wall side crack 12 is 2 mm, ensuring that the ratio of the weld width to the weld depth in the inner wall side crack 12 is 1. At this time, the weld width and the weld depth are close, indicating that the weld shape is good and the quality is high, which can effectively increase the weld strength at the inner wall side crack 12.

[0013] Furthermore, the groove angle is an important welding process factor that affects weld formation, welding dilution rate, and fusion zone shape. Therefore, the groove angle of the V-groove 11 is 50° to 70°. The preferred single-side groove angle of the V-groove 11 is 30°, and the double-side groove angle is 60°.

[0014] The specific operation process is as follows:

[0015] 1. Clean the cracks 10 formed on the slag ladle wall 1;

[0016] 2. Dig out a V-shaped groove 11 with the opening facing outward from both sides of the outer fracture of the crack 10. The depth of the inner wall side crack 12 is equal to the crack width. The groove angle of the V-shaped groove 11 is controlled to be 60°.

[0017] 3. Welding is performed at the V-groove 11, and then repair welding is performed on the inner wall side crack 12.

Claims

1. A crack repair structure for a copper smelting slag slow cooling slag bag, characterized in that: The outer side opening of the crack (10) penetrating the slag ladle wall (1) is formed into a V-shaped groove (11) opening outwards, the V-shaped groove (11) is welded, and the side crack (12) on the inner wall is repaired by welding.

2. The crack repair structure of the copper smelting slag slow cooling slag bag according to claim 1, characterized in that: The groove depth of the V-shaped groove (11) is 2 / 3 of the thickness of the slag bag wall (1).

3. The crack repair structure of the copper smelting slag slow cooling slag bag according to claim 1, characterized in that: The depth of the inner wall side crack (12) is equal to the crack width.

4. The crack repair structure of the copper smelting slag slow cooling slag bag according to claim 1, characterized in that: The groove angle of the V-shaped groove (11) is 50° to 70°.

5. The crack repair structure of the copper smelting slag slow cooling slag bag according to claim 4, characterized in that: The groove angle of the V-shaped groove (11) is 60°.

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