How to identify inferior quality square tube machine equipment
Published Time:
2020-06-28
Substandard square tube machines simply present folding. Folding is a variety of fold lines in the appearance of the square tube. This defect often runs through the entire longitudinal direction of the product. The reason for folding is that inferior manufacturers seek high efficiency, the reduction amount is too large, ears occur, and folding occurs during the next rolling process. The folded product will crack after bending, and the strength of the steel will be greatly reduced.
It is well known that the quality of square tube machine equipment is very important during its use. Let's discuss the good and bad quality of square tube machine equipment.
1. Inferior square tube machines simply show folding. Folding is various fold lines formed on the surface of the square tube. This defect often runs through the entire longitudinal direction of the product. The reason for folding is that inferior manufacturers pursue high efficiency, the reduction amount is too large, ears occur, and folding occurs during the next rolling process. The folded product will crack after bending, and the strength of the steel will be greatly reduced.
2. Inferior square tube machines often have a rough surface. The rough surface is caused by severe wear and tear of the rolling groove, resulting in irregular unevenness on the surface of the steel. Because inferior square tube manufacturers seek profit, the rolling groove often shows over-rolling. It must be emphasized here that high-quality welding pipe machine equipment must be selected.
3. Inferior square tubes are prone to scabbing on the surface, for two reasons:
(1) The raw materials of inferior square tubes are uneven and contain excessive impurities.
(2) The crude guide equipment of inferior manufacturers is prone to steel sticking.
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