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Advantages and disadvantages of high strength steel trailer girder are introduced

2022

04-22
Readings:Twice

Advantages and disadvantages of high strength steel trailer girder and suitable working conditions:A......

Advantages and disadvantages of high strength steel trailer girder and suitable working conditions:

Advantages of high strength steel: high strength

High strength: the biggest characteristic of high strength steel is high strength. From the table above, we can also see that the yield strength of high strength steel is twice that of manganese steel and three times that of ordinary steel.

Shandong Leeyaoo Machinery Equipment Manufacturing Co., LTD

When manufacturing trailer girder, bear the same strength, the girder made of high strength steel, with less material, the upper wing plate, the lower wing plate, the vertical plate can be made thinner, lighter weight. In the current weight charge, under the premise of loading, the advantage is more obvious.

High strength steel is not the common advantage and disadvantage of universal trailer girder:

Disadvantages of high strength steel: poor toughness is difficult to weld

Shandong Leeyaoo Machinery Equipment Manufacturing Co., LTD

Poor toughness: we can also see from the table that the elongation of high strength steel is smaller and the toughness is poor. This is also the reason why we often hear high strength steel "rather bend".

Welding is difficult: high strength steel girder is strictly forbidden to welding, high strength steel is easy to annealing in strong current, destroy the steel structure, girder is easy to break after annealing. The welding of high strength steel requires high equipment and welding technology, which requires a good grasp of voltage and current. Trailer factory generally uses tens of thousands to hundreds of thousands of yuan submerged arc welding machine and other large welding equipment welding, ordinary maintenance point, repair shop equipment is relatively simple, a bad treatment after annealing, trailer girder is easy to open welding fracture.


Advantages and disadvantages of high strength steel trailer girder are introduced

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