Similar to wavy edges, edge cracking also occurs when added pressure is applied to the edges of the piece, instead of the center.Īnother common defect in sheet metal rolling involves the splitting of a workpiece. This is because the temperature sometimes isn’t uniform throughout the whole workpiece, thus causing more pressure on the warmer areas. This can cause the edges to be wavy.Įspecially in hot rolling, cracking is very possible. Since there is a deflection involved under the load in a rolling machine, this can cause a workpiece to be thinner on the edges and thicker in the middle. See below for the various defects to look out for: When it comes to rolling defects, most of them are caused by the actual rolling process.
Usually, these defects happened during previous work with the metal. Prior to working with a metal rolling machine, a piece of metal might have impurities such as: Sheet metal rolling defects have two different categories : surface rolling defects and internal structural rolling defects.
#Welding defects causes and remedies pdf how to
In this post, we’ll discuss potential sheet metal rolling defects and how to prevent them. However, there are some problems that can occur during the rolling procedure. This process flattens pieces of metal and ensures they are the size you want. To make sure the sheet metal manufacturing process runs smoothly, a rolling machine is used. In fact, a large majority of the products that we use every day were constructed from sheet metal. Sheet metal is cut, rolled, and manipulated into different shapes and objects that form a wide variety of purposes. When sheet metal is formed, it may be used by many different tools or sent through different machines.
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