Essay On Photo Chemical Machining

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Other matters to be taken into account for introducing the techniques to an industry
Below can be seen other factors that need to be considered. Each factor is the most important for its type of micro manufacturing process.

Chemical-Machining and Photo-Chemical Machining

Life cycle - The life cycle of a photo chemical machining tool is estimated to be around 450 cycles. For a large volume production it is often advisable to produce a negative master film, this also a positive film to be quickly produced by a contact method. It is advisable where the design of a component allows, to avoid manufacture of a tool that produces large areas of photo resistant removal. If the work material has areas of exposed metal the machine will have a faster rate of etch than cutting lines, this can cause tolerance problems together with a faster contamination of the etching chemistry.

CAD – One factor that is often overlooked when introducing this type of process into the manufacturing industry is having personnel trained in the appropriate operational software, such as CAD. When a 2D CAD image is created of the desired design what needs to be kept in mind is that this will also involve calculating bend allowances, inclusion of half etch detail and scaling. To allow for the etching process an etching compensating factor has to be taken into account. This includes drawing the outside profile larger than the finished component size this means holes and slots should be smaller to compensate. The amount of adjustment is directly proportional to the thickness of the metal being processed.

Electro-Chemical Forming and Machining

Environment – with all the advantages this process brings it also has its downfalls ECF and ECM are known for environment...

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... on the power concentration can burn through flesh. Strong standards are in place for the safe use of lasers and laser systems. The backbone of any safety program is the continuous effort of management and employees to follow established safety protocols. Only through a strong support for training education this can be achieved. Simple use of safety guards and protection glasses can dramatically decrease the risk to workers

Accuracy - Improvement of accuracy has been a central topic in laser beam machining. Short pulses over a longer period of time have greater potential to obtain higher accuracies in dimensional control. This is due to the very small amounts of material that can be removed per pulse and because the very small damaged or heat effected zone at the surface. The focus on accuracy gives greater detail and reliability on the laser beam machining process

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