Plastic molds are tools used in the plastics processing industry to match plastic molding machines, giving plastic products a complete configuration and precise dimensions. The general plastic mold consists of two parts: a movable mold and a fixed mold. The movable mold is mounted on the moving template of the injection molding machine, and the fixed mold is mounted on the fixed template of the injection molding machine. In the injection molding, the movable mold and the fixed mold close constitute a casting system and a cavity, and when the mold is opened, the movable mold and the fixed mold are separated to take out the plastic product. At present, the proportion of plastic molds in the entire mold industry is about 30%, and the proportion in the import and export of molds is as high as 50-70%. In recent years, China's plastic molds have developed rapidly. The application of plastic products is becoming more and more extensive, providing a very broad market for plastic molds. The overall heat trend of the mold market is stable and upward. In the future mold market, the development speed of plastic molds will be higher than other molds, and the proportion in the mold industry will gradually increase. Among them, the plastic mold processing technology generally presents the following development trends:
Analysis of the five major trends in the development of plastic molds in the future
1. The increasing size of mold-forming parts and the high productivity of parts require multiple cavities, resulting in larger and larger molds. Large-scale molds with large tonnage can reach 100 tons, and a few hundred cavities and thousands of cavities require mold processing equipment. Large workbench, increased y-axis z-axis travel, large load-bearing, high rigidity, high consistency.
2. The mold steel material processed by the mold has high hardness, and the mold processing equipment is required to have thermal stability and high reliability.
3. For complex cavity and multi-functional composite molds, with the complexity of the shape of the workpiece, it is necessary to improve the design and manufacture level of the mold. A variety of grooves and materials are formed or assembled into a set of molds. Functional composite molds require a large amount of machining programming procedures, high cutting depth and high stability, and high processing difficulty.
4. The refinement of mold processing makes the compounding and high efficiency of processing equipment more attractive. High-speed milling has many advantages such as high-hardness materials that can be processed, smooth processing, small cutting force, and small temperature rise and deformation of the workpiece, which makes mold companies pay more and more attention to high-speed machining.
5. High dynamic accuracy. The static performance introduced by the machine tool manufacturer does not reflect the actual machining situation when the mold is three-dimensionally machined. The high-precision machining of the three-dimensional surface of the mold also requires high dynamic precision performance, and high-speed and high-precision can be realized only by matching the high rigidity, thermal stability, high reliability and high-quality control system of the machine tool.
With the rapid development of automobile manufacturing and IT manufacturing, the domestic mold industry has achieved rapid development. It is understood that the proportion of plastic molds in China's mold industry can reach 30%. It is expected that in the future mold market, plastic molds will account for the total molds. The proportion of the volume will continue to increase gradually, and the development speed will be faster than other molds.
1. Product introduction
Coal-based Column Denitrification Column Activated Carbon is cylindrical black particles. It has many characters, such as high porosity, high sulfur capacity, high desulfurization efficiency, large surface area, light weight, strong adsorption capacity, wear resistance, good water resistance, low air resistance, easy regeneration, not easy to break under high pressure etc. It is a commonly used in adsorbent.
2. Adsorption purification principle and process
Coal-based denitrification Activated Carbon is divided into large pores (pore size greater than 50nrrt), the middle hole (pore size between 2 ~ 50nm) and micro-pore (pore size less than 2nm) three categories.
The denitrification activated carbon is by active carbon`s adsorption and catalytic activity of activated carbon. The strong catalytic effect of the active carbon for sulfur dioxide in gas, and a small amount of Oxygen in the oxidation reaction, the reaction of elemental S adsorbed the surface of activated carbon. When activated carbon desulfurization agent the adsorption reaches saturation, the desulfurization efficiency decreased obviously, it must carry on the regeneration. The regeneration of active carbon adsorption depends on the material, sulphur began to melt under atmospheric pressure is 190 degrees, 440 degrees Celsius will sublimate into gas, therefore, the general use of superheated steam temperature of about 450-500 degrees Celsius for the regeneration of activated carbon desulfurization agent. When the desulfurization agent reach high temperature, the elemental sulfur separate out activated carbon, the precipitation of sulfur into sulfur recovery pool, water cooled to form solid sulfur.
Column Denitrification Column Activated Carbon
Column Denitrification Column Activated Carbon,Activated Carbon,Biochemical Activated Carbon,Black Amorphous Activated Carbon
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