Supply the LR AH40 shipbuilding structural plate tensile strength data

We just exported 1500 tons LR AH40 shipbuilding structural plate, LR grade A hull structure steel plates to Brazil. The customer is introduced by our old customer who used to work for the DETROIT BRASIL LTDA, a famous ship yard in Brazil. They regard us as their Chinese agent, they will inform us no matter when they purchase steel materials from China, if we can not supply the goods, we will inspect the goods for them before the shipment.

Cleveland cliffs announced on March 13 that it had completed the acquisition of AK LR AH40 shipbuilding structural plate steel, foreign media reported In the transaction of holding), shareholders of Cleveland cliffs and AK steel respectively voted on the US billion acquisition agreement at their respective shareholders' meeting to complete the resolutions required for the announcement of acquisition of AK steel LR AH40 shipbuilding structural plate at the beginning of the year. The acquisition is Cleveland cliffs' first foray into steel manufacturing.

LR AH40 shipbuilding structural plate surface cracks refer to the linear cracks on the surface of LR AH40 shipbuilding structural plate, which should generally be the same as the forging or rolling direction. Formation reason: it is mainly due to the hairline, hot crack and cold crack caused by surface over burning, decarburization, looseness, deformation and excessive internal stress during processing (forging, rolling, heat treatment, quenching and tempering), as well as the high content of sulfur and phosphorus impurities on the surface. Inspection method: LR AH40 shipbuilding structural plate surface cracks can be detected by naked eye observation, acid pickling, magnetic particle inspection, coloring inspection and metallographic method.

In order to obtain the seamless tube with smaller size and better quality, the method of cold rolling, cold drawing or the combination of the two must be used. Cold rolling is usually carried out on a two high mill, and LR AH40 shipbuilding structural plate pipes are rolled in a circular pass composed of a variable cross-section circular groove and a fixed conical head. Cold drawing is usually carried out on single chain or double chain cold drawing machines of 0.5-100t.