Welded H-shaped steel (YB 3301-81) (1)

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Welding of H-Beam (YB 3301-81)

H-beam is one of the most commonly used structural steel products in the construction industry. This type of steel shape is characterized by its distinctive cross-section, which consists of two flanges that support a web in the middle.

In order to effectively weld H-beam, the following components are required: a welding machine, flux cored wire, welding helmet and protective clothing, as well as welding slag remover, stainless steel cleaner, wire brush, and an anti-spatter spray. Depending on the welding technique employed, some additional materials and instruments may also be necessary.

The welding process generally consists of the following steps:

1. Check pre-welding condition

Prior to welding, it is important to check the pre-welding condition for proper handling. The web and flanges of the H-beam should be square and without slag. If any slag is present, it must be removed prior to welding.

2. Prepare the welding machine

Depending on the welding technique employed, it is necessary to set the parameters such as current, voltage, and travel speed. The parameters should be adjusted according to the welding position.

3. Lay the flux cored wire

Flux cored wire should be laid in a continuous fashion across the surface of the base metal. This will ensure that the weld material is distributed evenly.

4. Perform the welding

Once the parameters have been set and the wire is laid, the welding can begin. It is important to maintain a steady motion to ensure the best results.

5. Clean slag

After the welding is complete, the slag should be removed from the weld area. This can be done using a welding slag remover and a wire brush.

6. De-oxidize

Lastly, the weld area should be de-oxidized using a stainless steel cleaner and an anti-spatter spray. This will help to ensure a clean, professional-looking finish.

In conclusion, proper welding of H-beam is essential for the safe and robust construction of structures. Following the above steps will ensure that the welding process is done correctly and results in a high-quality finished product.

Welding H-Beam (YB 3301-81)

H-beam is a kind of steel which has a heavily symmetrical shape with a nearly straight cross section. It is widely used in steel constructions, bridges, automobiles and ships due to its excellent stability and rigidness. The standards for H-beam welding, YB 3301-81, are stated as follows.

1. Steel materials and their properties: The material of H-beam should be weldable steel with strength grade 350MPa or higher. The heat affected zone shall have no cracks or defects.

2. Pre-welding steps: Thoroughly grind off the rust, grease and other impurities on the contact surfaces and coat both the edges of the beams with a clean mild protective fluid.

3. Welding parameters: The welding current and voltage should be consistent with the quality of the welding material and the welding process shall not exceed specific range.

4. Post-welding steps: After finishing any welding operation, the weld should be inspected for its uniformity and strength. Any welding seam which is identified as having fault shall be subject to repair by grinding and welding again.

H-beam welding is a very important process in the Steel Construction and other industries as it is a key hammering link in the production of bridges and other structure. It is necessary to follow the welding standards strictly in order to get quality assurance in production.