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Draft angle design is an important factor when designing plastic parts. Because of shrinkage of plastic material, injection molded parts have a tendency to shrink onto a core. This creates higher contact pressure on the core surface and increases friction between the core and the part, thus making ejection of the part from the mold difficult.
the Johnson–Cook model; the Steinberg–Cochran–Guinan–Lund model. the Zerilli–Armstrong model. the Mechanical threshold stress model. the Preston–Tonks–Wallace model. The Johnson–Cook (JC) model [24] is purely empirical and is the most widely used of the five. However, this model exhibits an unrealistically small strain-rate ...
For titanium alloys e.g. Ti 6Al 4V and some stainless steels this is around 900 °C (1,650 °F) and for aluminium alloys e.g. AA5083 it is between 450 and 520 °C. In this state the material becomes soft so processes that are usually used on plastics can be applied, such as: thermoforming, blow forming, and vacuum forming. [1]
Supporting the two divisions is the Group's Component & Services (C&S) function which produces plastic and metal parts, tooling and production equipment for motor and motion-related products. Johnson Electric has its head office in Shatin, Hong Kong, and is listed on the Hong Kong stock exchange. Johnson Electric has over 30,000 employees and ...
Plastics extrusion is a high-volume manufacturing process in which raw plastic is melted and formed into a continuous profile. Extrusion produces items such as pipe/tubing, weatherstripping , fencing, deck railings , window frames , plastic films and sheeting, thermoplastic coatings, and wire insulation.
The schematic diagram of the superplastic forming set-up used for bulge forming with all necessary attachments and the photograph of the top (left) and bottom (right) die for SPF. A circular sheet (blank) of 118 mm diameter was cut from the alloy sheet and the cut surfaces polished to remove burrs.
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Resin code for polyethylene terephthalate Polypropylene lid of a Tic Tac box, with a living hinge and the resin identification code, 5, under its flap. The Resin Identification Code (RIC) is a technical standard with a set of symbols appearing on plastic products that identify the plastic resin out of which the product is made. [1]
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