Decorative vs Industrial or Hard Chromium Plating Chromium plating manifests itself in two commercial forms namely “decorative” and “industrial” or “hard” chromium plating. The nature, functions and purposes of the two types are distinctly different, and they are not interchangeable.…
HARD CHROMIUM PLATING FOR THE PLASTICS INDUSTRY The purpose of this paper is to fully analyze the relevant technical problems of the electroplater and those of the plastics mold, tool, die and equipment manufacturer in an effort to effect a…
What hardness for plastic molds? How hard should a plastic mold be? A tempest in a teacup has been raging since the first attempt to swap ideas on plastic mold design. To one molder, 48 Rockwell “C” is sufficient; to…
Mould cooling systems The most effective cooling method for any mould would be to pump the coolant through the cooling channels counter-current to the flow of molten plastic into the mould- This method is adopted for pressure die casting and…
What is 3 plates plastic mould? The three-plate mould differs from the more common two-plate design format in terms of utilizing more than one split or parting line. The tool construction is divided into three distinct plate build-ups which separate…
The mould impression Often incorrectly referred to by some engineers as the cavity,the mould impression is a hollow area contained inside the mould into which molten polymer is injected and allowed to cool. When a mould tool contains more than…
New Plastic Molding Part Development: Process, Timing & Shipment | Topworks Topworks Plastic Mold · Huangyan, China sales@plasticmoulds.net · +86 159 6865 2523 Complete Development Guide New Plastic Molding PartDevelopment Guide From CAD concept to shipped products — a 10-step…
Optimising time cycle and machine productive time Whatever ideas for cost saving are introduced into the injection moulding of plastic components,ultimately the time cycle of the machine and the rate at which it can be made to produce good saleable…
Fixed and variable costs The main fixed cost of the injection moulding process is,of course,the capital cost of the equipment, but other fixed costs—rent of property,rates,etc.— must not be lost sight of. In the world of the entrepreneur—and such people…
Internal stress is invisible on a fresh part. It shows up weeks later as a warped housing, a cracked boss, or a lid that no longer fits. Two mechanisms create it: uneven cooling and frozen molecular orientation. Most warped parts…
