SPA – H is a kind of low carbon alloy structural steel ,
widely used in the production of container plate. SPA – H container
plate is one of the most common defects in the process of manufacturing
cold bending crack, cold bending performance will directly affect the
product quality and economic benefit.
Analysis of the reasons:
Distribution of a large number of spherical aluminum oxide inclusion
steel plate surface is the main cause of cold bending crack, these
inclusions from the surface of metal, gradually formed around the micro
hole, the hole with the deformation process of growing, joins,
eventually forming the large crack or separation between metal and metal
forming layered, deterioration in cold bending performance, until the
craze.
learn more:
http://www.ice-steels.com/News/JIS-G3125-SPA-H-cold-bending-crack-and-control-measures.html
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