Tag Archives: promyshlennoct and equipment

Molding Plastic – The Basic Requirements For The Process

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The main requirement, which is presented in injection molding, is to provide the required temperature in injection molding with a maximum uniformity in size and provision of a minimum content destruktirovannogo material prepared for the formation of portions of the alloy. To meet this requirement are selected design of the injection site and the mode in injection molding. Processes in injection molding in injection cylinder piston and screw type differs substantially. Plastic injection molding in a cylinder piston type is carried out mainly by heat from external heat sources. Casting plastic during the passage of the cylinder, plastic slightly mixed, and therefore has a noticeable temperature fluctuations in cross-section portion and along its length. Go to NYC marathon for more information. Molding of plastic in the screw cylinder as a result of heat transfer from the external heater and cylinder under internal heat produced during its shear deformation in the channels of the auger.

In plastikatorah screw injection molding subjected to vigorous stirring. It evens out the temperature over the cross section prepared portions for molding plastics. However, some of the temperature inhomogeneity in the plastic molding along the portions prepared for injection, is preserved. In injection molding flow following physical processes: heating, melting, changing the volume of plastic under the influence of temperature (thermal expansion), compression of the melt and compaction of granules or powder (as a result of changes in the depth of the screw channel at a constant step or change pitch at a constant depth, and external pressure), shear deformation of the plastic. Just when casting Plastics can take place, the destruction processes. In injection molding processes are mainly determined by thermal properties of plastics, the parameters determining the heating process (heat conduction, diffusivity, in particular, the specific teploemkoeib). As important parameters in injection molding, which determine the melting process, the parameters of volume expansion and contraction, processes determining changes in the volume of plastics in injection molding.

Roll Machine Production

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Roll forming equipment for the production of galvanized profiles for frame construction is a mini-factory for the production of a complex profiles for frame construction and for construction and reconstruction of the loft. Mini production of rolled sections include: cutting the line, production line for hat profile height 25mm. and 45mm. performing the role of the sheathing; line for production of C and U shaped profiles (Rack and guide), thermo. Forming equipment is optimal, economical and modern tool for the creation of galvanized profiles. Technology of light steel thin- (LSTC) is combined with any conventional technology, by adding them to their advantage: the high rate of construction, low operating cost, free planning, environmental friendliness, completeness of delivery structures on the object, the geometric precision of design and a variety of external finishes.

Building structures based on thin-walled galvanized profiles allow you to apply shallow foundations and produce reconstruction of the roof of the old buildings without increasing substructure due to its low weight. Roll forming equipment for the production of metal intended for the manufacture of metal "Monterrey" "Cascade", "Dune" roll of metal with a lacquer coating. Roll forming equipment for manufacturing, often called simply – Roll Machine. Metal simulates natural tile and is a corrugated steel sheet. The most common is a metal roofing profiles Monterrey, reliable, high-quality, beautiful roofing material, which combines spectacular tiled pattern and practicality. Line for the profile of the Cascade – 21 "produces just 3 types of products: metal" Cascade ", roof profiled MP-20, wall corrugated board CH-20. Profiles produced in the line of the Cascade-21 "are among the the most economical, used for finishing the roofs and facades.

Surface Pump

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A surface mounted on the shore and with a reservoir connected to an ordinary hose. Surface Pump PLUS: easy to assemble and dismantled, requiring only cleaning and lubrication of parts ejector. DISADVANTAGES: Can be used only where ground water come close to the surface. For deep wells and water wells unusable. Self-priming Surface pumps Speroni (Italy) Ideal for use in the water-supply stations and more. Surface pumps can pump water to a height of 30-50 meters (some models – and above), but suck in water from 15 to 20 meters depth they can not – is simply impossible. Meanwhile, in the suburbs is not uncommon, when the water is located precisely at such a depth below ground.

What should I do? If the water does not want sucked, because the pump from her too far, let's reduce this distance. Until when will diminish? A zero! That is, throw the pump into the water. For example, I have to testify artesian well – the depth of 18 meters. So, to get water, surface pump is not suitable. This task is quite handle a submersible pump with a capacity of 200 watts. Two hundred watts – this is quite a bit, believe me.

Submersible Pump PLUS: can be used in wells and boreholes to a depth of 40-50 meters. Not requires no special installation, does not take much space in the water works almost noiselessly. DISADVANTAGES: inconvenient to maintain, because you must remove it from the well or wells. Submersible pump hard parsed due sealed enclosure.