Defects In Steel Sheets

When sheet metal is rolled the width doesn t change but since the thickness is dramatically reduced the length must increase by a similar percentage.

Defects in steel sheets.

It isn t practical to handle this when it s flat so it is coiled as it s produced. Here are some common flat roll steel defects we watch out for. Surface defects surface defects is an important issue in sheet metal stamping as the stamping process affects surface appearance and thus influences surface quality. Choosing the wrong size blank under estimating the number of forming tools required or encountering an unexpected wrinkle or split can be very costly if only discovered during first physical tool tryout.

The most common sheet metal stamping defects are also the easiest to predict using advanced simulation software such as autoform. Bare spots galvanized coated bare spots result when coating fails to adhere leaving the substrate exposed. The weight doesn t change. Defects in continuous cast steel products.

The shape defect of the steel coil is higher or lower than the one end of the coil and is continuous like a pagoda which appears in the inner outer ring portion of the coil. This means the length of your sheet metal can be over a mile long. They can be caused by carbon smut or grease deposits on the strip being coated or by roll pickup of foreign material.