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Repair method of steel structure crack

Time：2020-07-08

The repair method of steel structure cracks can be carried out in the following steps:

1. First drill a round hole with a diameter equal to the thickness of the steel plate at each end of the cracked steel structure in Sichuan, and make the tip of the crack fall into the air, so that the purpose of the sum is to prevent the crack of the steel structure from continuing to expand.

2. For the crack between the two holes of the steel structure in Chengdu to be welded, the crack edge of the steel structure can be processed into different types of grooves by gas cutting according to the thickness of the construction to maintain the quality of welding.

When the thickness is less than 6mm, 1-shaped (that is, no groove is used) When the thickness is greater than 6mm and less than 14mm,

a V-shaped groove is used: when the thickness is greater than 14mm, an X-shaped groove is required.

3. After heating the metal around the crack of Sichuan steel structure to 200 °C, weld the crack with E43 type (steel plate material is carbon steel or) E55 type (steel plate material is manganese steel) welding rod.

4. If the crack of the steel structure in

Chengdu is large, which has a great impact on the strength of the component, in addition to the crack of the welded steel structure, the metal plate should be reinforced with high-strength bolts.

Keywords： Repair method of steel structure crack

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