Asociación de fabricantes de maquina herramienta.
Asociación de fabricantes de maquina herramienta.

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13 November, 2020

In heavy duty manufacturing, bevelling is frequently one of the important processes that do not receive the attention they deserve. Without a doubt, improper preparation of weld edges is the primary and most common cause of incorrect adjustments that lead to poor quality. This is because inaccurate preparations of "V" joints result in excess weld, greater application of heat and higher consumption of welding consumables, as well as more staff and extra hours required. All these factors contribute to lower productivity at an additional cost that works against current needs to optimise costs.

Oxycutting (bevelling) is the most common process used to cut carbon steel sheets. The manual equipment is inexpensive and can be used manually or in machining. Among the disadvantages of this process are low working speeds, high thermal application, potential inaccuracies in bevelling angles (that lead to an excess deposit of weld) and the need to finish the bevelled surface (depending on material and joint requirements). It also involves a significant cost in gases and other milling consumables, including inevitable waste of material and labour.

However, CEVISA manufactures bevelling machines that operate on the principle of rotary shearing, among others, and are very efficient due to their portability and manoeuverability at high bevelling speeds of between 1.7 and 2.6 m per minute. These bevellers can bevel sheets from 6 to 50 mm thick and perform accurate and even bevelling for “V”, “K” or “X” joints.  These machines can be used for highly accurate bevelling of materials such as carbon steel, alloy steel, stainless steel and aluminium. An important metal working advantage of mechanical bevelling, which is a non-thermal process, is that it does not generate a heat-modified area and does not cause thermal distortion. 

Inverted bevellers used simultaneously with standard bevellers can produce a double V bevel without having to turn the sheet, thereby saving crane work, handling and repeated processing times, reducing the total performance cycle time and increasing productivity at an optimal cost.




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