Home > News Center > Product News

How to identify inferior steel

How to identify inferior steel

1. Fake and inferior steel materials are prone to folding. Folds are various fold lines formed on the surface of steel, and this defect often runs throughout the length of the product. The reason for folding is that shoddy manufacturers pursue high efficiency and the reduction is too large, resulting in ears. Folding will occur during the next rolling process. The folded product will crack after bending, and the strength of the steel will be greatly reduced.
2. Fake and inferior steel products often have pitted surfaces on the surface. Pockmarking is an irregular uneven defect on the steel surface caused by severe wear of the rolling groove. Due to the pursuit of profits by manufacturers of shoddy and inferior steel products, groove rolling often exceeds the standard.
3. The surface of fake and inferior steel is prone to scarring. One is that the material of fake and inferior steel is uneven and contains many impurities. The other is that the guide equipment of the fake and inferior steel manufacturers is simple and easy to stick to the steel. These impurities can easily cause scarring after biting the rollers.
4. The surface of fake and inferior materials is prone to cracks. The reason is that the blank is made of adobe, which has many pores. The adobe is subject to thermal stress during the cooling process, causing cracks, and cracks appear after rolling.
5. Fake and inferior steel is easy to scratch. The reason is that the equipment of the fake and inferior steel manufacturers is simple and easy to produce burrs and scratch the surface of the steel. Deep scratches reduce the strength of steel.
6. Fake and inferior steel has no metallic luster and is light red or similar in color to pig iron. There are two reasons: its blank is adobe.
7. The rolling temperature of fake and inferior steel products is not standard. Their steel temperature is determined by visual inspection. In this way, rolling cannot be carried out according to the specified austenite area, and the performance of the steel products will naturally not meet the standards.
8. The transverse ribs of fake and inferior steel materials are thin and low, and the phenomenon of underfilling often occurs. The reason is that in order to achieve a large negative tolerance, the reduction amount of the first few passes of the finished product is too large, the iron shape is too small, and the hole pattern is not fully filled.

Pre: Types of stainless steel

Next: Exploring S45C Steel

Contact Us

Shanghai Katalor Enterprises Co., Ltd

0086-18317160019
[email protected]
No.230,1st Floor,Building No.1,No.221 Of Huashen Road,Free Trade Area Of Pudong New District,Shanghai China
Live Chat