1. High wear. Round steel owing to low hardness, toughness was poor, resulting in consumption is very large, and indirectly led to the magnetic part of the task is heavy, costly, and even affect the quality of products.
2. Two tapered. The bar two tinny are many reasons, mainly because the two ends of the bar and rod mill material contact area and the chances are greater than the middle part, resulting in two effective grinding time longer than the middle, once two and significant differences in the proportion of the middle of the naked eye can see the emergence of this steel rod we call “failure” because it has not achieve an effective role in the grinding mill inside.
3. Broken rods. The reason is loose inside the material. Steel billet problem, only the large steel mills to reach inside tight technical requirements, especially the diameter of 70mm or more, although most of the steel billet to complete the form, but the compression ratio and low hardenability, that is not organized strictly . Coupled with round undischarged shipped its internal stress, broken rods as explosion - fried, which began from the principle steel production of steel bars is like blowing balloon must stress inside to lift off to prevent broken rods.
4. The rod bending. Bending rod is mainly due to the low hardness round, quite soft, when the mill was affected by external force such as impact, bending easily occurs. Once a rod bent, the entire order will lead to parallel inside the bar mill is disrupted (the bar is run in parallel inside the mill, the material into which time slot is ground into small particles or powder), light leading to the bar after the low-order mill efficiency, while leading to the bar mill was thrown, threatening the security of staff and damage to the mill and other production equipment.
5. Low productivity, mainly the qualified products. It is a problem that a lot of companies, many reasons, the
wear resistant metal rod its a great impact. For example, a variety of steel bar diameter ratio between irrational, unreasonable loadings, the additional steel bars unreasonable, not timely removed the bar and so fail.
