Tuesday, March 16, 2010

Manual Flame Cutting Vs Machine Flame Cutting

In manual flame cutting, the operator is responsible for holding and guiding the torch and the quality of surface being cut solely depends upon the skill of the operator. More smooth and accurate cuts can be attained in this process if the torch is held against straight or curved guides while forward movement is consistently maintained. Machine flame cutting makes use of metal cutting machines that are specifically designed and constructed to hold the torch in specific predetermined positions to accomplish repeated and rapid cuts.


Machine flame cutting process quite accurate, provides greater speed and is more economic too. Whereas manual flame cutting method does not produce cuts as accurate and smooth as machine flame cutting does.


Machine flame cutting is an optimal option to go for when bulk quantities of materials are to be cut. However, manual cutting is slow and can be used with fair accuracy on thicknesses up to two hundred to three hundred millimeter flame cut.


The consumption of oxygen gas in manual flame cutting is much greater as compared to the consumption in machine flame cutting.


Manual flame cutting is widely employed in scrapping operations and on production work. Machine flame cutting can be used primarily to do straight line cutting, although they can be taken up for circular and shape cutting also.

Tuesday, February 16, 2010

Waterjet Fabrication

A waterjet cutter is an instrument extremely able of cutting rigid metals or any other hard material using a forceful jet of water at relatively high speed. Sometimes water is replaced by a combination of water and some scratchy substance. This technique is frequently used in production or manufacturing of machine parts and other heavy tools. This technique is very useful and highly applicable in various industries like tools manufacturing, automobiles, mining and other metal fabrication works, since it is helpful for the important operations like cutting, carving, and reaming. These cutters use the energy of high pressure water to generate extremely powerful force to slice objects. A waterjet cutter pressurizes a torrent of water flow to cut a variety of materials, for instance foam, rubber, plastic and wood. Abrasive jet cutters blend abrasive material with a rushed water stream to cut tough objects.


Waterjet fabrication is well thought-out as a green technology because water jets produce no harmful waste and do not pollute environment. Huge fragments of reusable scrap matter can be sliced with water jet cutting technique that could have been gone astray using traditional and custom cutting techniques. Consumption of water in waterjet cutters is very low and the water once used in cutting can be used again by recycling it using a closed-loop structure. Generally, used water is sufficiently clean or you can filter it and dispose down the drain. Use of garnet abrasive is totally non-hazardous as it is a natural material and non-poisonous in nature and can be used repeatedly after recycling.


Other advantage of waterjet cutting and waterjet profiling is that you get rid of dust particles produced in the air by traditional cutting methods. This feature seriously helps in improving the working atmosphere and minimizes the troubles that may arise from workers exposure to contaminated environment.