Search

8 Sep 2001: Economics. Can be economic for any batch size from one-offs to mass production (with or without automation).

8 Sep 2001: Economics. Cycle time is limited by heating and cooling of the sheet.

8 Sep 2001: Economics. It is normal to try to reduce the amount of drilling required in a component by careful design - but when an accurate hole is required, drilling has little competition.

8 Sep 2001: Economics. Production rate is limited by the insertion and removal of the blank, so some form of automation is often used.

8 Sep 2001: Economics. Cycle time is limited by heat conduction out of the mould, so increases dramatically for larger wall thicknesses. ... The long cycle times usually limit economic batch sizes to between 500 and 10,000.

8 Sep 2001: Economics. If possible, avoid cutting! A surprising number of designs involve a cutting process followed by a joining process.

8 Sep 2001: Economics. To reduce costs, several parts are often moulded together on a "tree-like" structure; parts can then be separated after moulding. ... Injection moulding is only economic for batches of 10,000 - 100,000 or more and so is usually automated.

8 Sep 2001: However, the production rate is slow so it is only economic for one-off jobs, repair work and difficult access situations. ... Joining of sheet (e.g. car body panels) is usually more economic by other welding processes such as spot welding.

8 Sep 2001: Economics. The production speed is limited by opening and closing the mould, so automation is normally used.

8 Sep 2001: cured). Economics. There are few composite forming processes, and the decision of which to use is normally determined first by shape and type of fibre (chopped or continuous), and then by