Five characteristics of distinguishing good and bad steel

When buying steel, how do we distinguish between good and bad steel?

1、Fake and inferior steel are prone to folding: folding is a variety of fold lines formed on the surface of the steel, and this defect often runs through the longitudinal direction of the entire product.

2. Fake and inferior steel surface often has pitted surface: pitted surface is caused by serious rolling groove wear and irregular irregularities on the surface of the steel.

3.The surface of counterfeit and inferior steel is prone to scars: the main reason is that the material of counterfeit and inferior steel is uneven and there are many impurities.

4.The surface of counterfeit and inferior steel is prone to cracks. The reason is that the billet is adobe, which has many pores. The adobe is subjected to thermal stress during the cooling process, resulting in cracks and cracks after rolling.

5. Fake and inferior steel has no metallic luster and is light red or similar to pig iron. The reason is that the billet of the fake and inferior steel is adobe, and the rolling temperature of the fake and inferior steel is not standard. Rolling in the austenite area naturally fails to meet the standards for the performance of the steel.

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