U-shaped clamp is a kind of connection fastener of U-shaped steel arch. The overlap length of U-shaped steel is generally not more than 200mm. The manufacturing process is simple and the installation and operation are convenient. The connection of U-shaped steel arch is safe and reliable, which can improve the service life of the roadway, reduce the maintenance rate of the roadway, reduce the occurrence of safety accidents, and ensure the safe production of the coal mine. How should U-shaped clamps be maintained in daily use?

Surface treatment method:

1. Surface cleaning: The proper method must be selected for cleaning according to the nature of the surface of the rust-proof object and the conditions at the time. Generally, there are solvent cleaning methods, chemical treatment cleaning methods and mechanical cleaning methods.

2. After the surface is dry and clean, it can be blown dry with filtered dry compressed air, or dried with a dryer, or wiped with clean gauze.

Method of applying antirust oil:

1. Soaking method: Some small items are immersed in anti-rust grease, and the surface is coated with anti-rust grease. The thickness of the oil film can be achieved by controlling the temperature or viscosity of the anti-rust grease.

2. The brush coating method is used for outdoor construction equipment or products with special shapes that are not suitable for immersion or spraying. When brushing, pay attention not to build up, but also to prevent missing coating.

3. Spray method Some large-scale rust-proof materials cannot be oiled by the immersion method. Generally, filtered compressed air with a pressure of about 0.7Mpa is used to spray in a clean place. The spray method is suitable for solvent-thinning antirust oil or thin-layer antirust oil, but it must adopt perfect fire prevention and labor protection measures.

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