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Plastic products are inseparable in people's production and life. This supply and demand relationship also promotes the rapid development of the injection molding industry. Focusing on the rarity of future oil, controlling costs is a must for business. As injection molding products are widely used in various industries, plastic parts are The requirement for precision has also become a problem in the industry.
Nitrogen-assisted injection as a high-tech has not been widely recognized in the industry. The following highlights the advantages of nitrogen-assisted injection.
The traditional injection is to inject molten plastic into the cavity by high-pressure injection of mechanical energy. However, the stress generated during injection, pressure holding, cooling and shrinking, and the wall thickness of the plastic parts shrink, which makes the plastic parts deform and warp, thus affecting Precision of plastic parts. Nitrogen-assisted injection is also called nitrogen pressure. It is introduced into the cavity (plastic part) by high-pressure nitrogen (up to 350 bar) to replace the traditional injection pressure. It is clear that the injection molding machine only It is necessary to complete the metering of 75-95 required for the injection cavity, and the remaining holding pressure is completed by nitrogen. Since nitrogen forms a hollow nitrogen high pressure bubble inside the plastic part, and the pressure is outwardly expanded by the characteristics of the gas, it is expanded. The stress is constant. Remember that the bubble will always be in the middle, and it will automatically fill the thicker wall according to the shape of the plastic part. After cooling, the pressure will be released before the mold is opened, so that the result is guaranteed. The pressure is averaged (without injection stress) and the shrinkage stress is averaged, thereby obtaining a stable high-precision size of the molded part.
The above actions can get more help at the same time:
1. Under the severely reduced stress, the size of the plastic parts is accurately guaranteed;
2. Since only 75-95 metering is required, the weight of the plastic part itself is reduced, and depending on the shape of the plastic part, raw materials with a saving of 35 or more can be obtained;
3. We have said that a hollow is formed inside the plastic part, and the structure of the plastic part is strengthened by the action of the circle;
4. Because it is formed by high pressure, the shrinkage marks on the appearance are also obviously gone;
5. The meat is hollow, the cooling time is reduced by about 35, and the forming cycle is also changed;
6. Because of the randomness of the gas shape, product design restrictions are reduced, and core drawing or overmolding processing is no longer desired;
7. Nitrogen is the pressure that forms inside the plastic part. Therefore, the clamping pressure is reduced. To allow the mold size, you can produce it on a smaller machine, thereby reducing equipment loss.
Hard-plate has many years experience to fabricate the nearly full set of vertical mill internal wear parts. The fabrications are mainly made from chromium carbide hardfacing plates, which has abrasion resistant property and could make the service life last longer than carbon steel.
Bimetal welding wear resistant alloy steel plate, its substrate using common Q235B steel plate, and Wear-resisting layer is composed of advanced alloy welding which was joint research and development by our company and scientific research institutions.
1, The chrome plate is a kind of the spray welding technology to produce the high wear resistance, resistance to erosion of composite materials
2, The wear-resisting layer with high hardness has good wear-resistant performance, and the substrate have most widely using because of its moderate carbon, good comprehensive performance , strength and welding
3, This plate can be easily formed to suit curves and contours. Welded studs or countersunk inserts can be fitted so the plates can easily replaceable.
4, The chromium carbide allow this wear plate to be supported under extreme wear and strong impact including of truck deck liners, hoppers, shutes
5, The substrate is not fixed, the plate can be chose according to customers needing. Different thickness is allowed according to your demand.
Cement Industry Feeder Cone,Chromium Carbide Ring Liner,Chromium Carbide Scraper Plate,Wear Sealing Ring Liner
SHENYANG HARD WELDING SURFACE ENGINEERING CO.,LTD , https://www.hardfacingplate.com