Gas-Assisted Injection Molding (GRIM) is a new type of injection molding process that has been widely used abroad in recent years and is increasingly used in China.
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People use high-speed injection molding machines mostly to shorten the injection cycle and improve production efficiency. However, the slippage of the injection molding machine screw is...
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1.Insufficient or uneven cooling,In not completely cooled ejected, the ejector rod thrust often deforms the molded parts, so not fully cooled on the forced release will produce deformation.
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Modified plastics are better than general-purpose plastics in terms of flame retardancy, strength, impact resistance, toughness and other properties, and have a wide range of downstream applications...
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Plasticizing components of the injection molding machine here refer to screw, melt cylinder, over rubber head, over rubber ring, over rubber washer.When the injection molding machine is working...
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Product seam marks are usually caused by low temperature and low pressure at the seam line.1、Temperature problem, 1). The temperature of the barrel is too low,2). Nozzle temperature is too low.
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I. What is bad gate cutting? It is a phenomenon that the gate connecting the molded products, main flow channel and manifold is not easily cut off when using point gate and other moldings...
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The pump is the "heart" of all hydraulic systems. So any time there is a problem with the hydraulic system, the problem is often blamed on the pump.In fact, as far as the cause of pump damage is concerned...
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The basic principle of fusible core injection molding is to first cast a fusible core using a low melting point alloy, then put the fusible core into the mold as an insert for injection molding...
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In the manufacture of molds, mold exhaust is a very important part. Mold exhaust can represent the overall structure of the mold to the greatest extent.Even if the excellent mold is without good exhaust...
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Advantages, Shortened cycle time, The cycle time is shortened because there is no limitation on the cooling time of the sprue system, so the part can be ejected in time after it is formed and cured...
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Therefore, how to ensure the normal and stable operation of injection machines in continuous production is a problem worthy of attention and effort for both injection machine manufacturers and users.
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Therefore, how to ensure the normal and stable operation of injection machines in continuous production is a problem worthy of attention and effort for both injection machine manufacturers and users.
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With the wide application of plastic products, such as daily chemical products and beverage packaging containers, the appearance needs often require the surface of plastic mold cavities to reach the degree of mirror polishing.
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Introduction,Except for the main flow gate, most of the gates are the smallest part of the pouring system, with a cross-sectional area of only 3% to 9% of the cross-sectional area of the manifold.
(1) the injection nozzle hole is too large to cause the melt material reflux and shrinkage, too small resistance to a large amount of material is not enough to appear shrinkage.
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PVC is a heat-sensitive material, its injection molding process is poor, the reason is that too high a melt temperature or too long a heat time can easily make PVC decomposition, so controlling the melting temperature is the key to injection molding PVC p
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1）Viscosity curve,The viscosity curve is made to select a suitable injection speed that will not cause large changes in melt viscosity when there are small fluctuations in each parameter. The fluctuation between each mold should be as small as possible to
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1. Cavity arrangement. The number of cavities and their arrangement are determined according to the geometric structure characteristics of plastic parts, dimensional accuracy requirements, batch size, ease of mold manufacturing, mold cost, etc...
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1: What is laser welding? A: Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source.
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The barrel and the screw make up the extrusion system. Like the screw, the barrel works under high pressure, high temperature, severe wear and tear, and certain corrosion conditions.
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For an injection molding factory, the energy consumption occupied by the injection molding process accounts for about 60%, thus effectively reducing the energy consumption of the injection molding machine is an important way to save energy in the injectio
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1、Commonly used plastic engineering materials and shrinkage rate?ABS: 0.5% (super unbreakable glue),PC : 0.5% (bulletproof glass glue),PMMa ：0.5%: (plexiglass),PE ：2% polyethylene
What is the main flow channel sticking to the mold (appearance), Main runner residue is a phenomenon that the main runner of molded products fails to break away from the mold.
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In the work of the mold, in addition to the requirement that the substrate has a reasonable match of high enough strength and toughness, its surface properties are crucial to the working performance and service life of the mould.
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