In the precision field of the manufacturing industry, the precision of injection-molded parts is of utmost importance as it directly relates to the performance, quality, and reliability of products. Different injection molding methods with distinct characteristics have varying requirements and safeguard measures for the precision of injection-molded parts. The following will delve into the differences in this regard between high-precision injection molding and general injection molding.
High-Precision Injection Molding: Stringent Standards for Ultimate Precision
High-precision injection molding is characterized by extremely high requirements for the specification precision of injection-molded parts, with very small dimensional tolerances. To meet such high-precision injection requirements, a series of stringent standards must be satisfied.
Firstly, the selection of mold materials is crucial. High-quality materials must be used to ensure that the mold has sufficient rigidity to withstand the enormous pressure during the injection molding process without deformation. At the same time, the specification precision of the cavity must reach an extremely high level, and the smoothness should be nearly perfect. The precise positioning accuracy between mold plates is also indispensable, as only in this way can a solid foundation be laid for the molding of high-precision injection-molded parts.
Secondly, the selection of high-precision injection molding machines is essential. These injection molding machines are equipped with highly accurate control systems that can precisely control key parameters such as injection speed, pressure, and temperature. This ensures that each injection molding process can stably and accurately replicate the shape and dimensions of the mold, thereby guaranteeing the high precision of injection-molded parts.
Thirdly, the formulation and implementation of high-precision injection molding processes are also critical. From the pre-treatment of raw materials, the optimization of injection molding parameters to the precise control of the cooling process, every link needs to be carefully designed and strictly controlled to minimize errors and improve the precision of injection-molded parts.
Finally, the selection of plastic materials cannot be overlooked. Special plastic materials suitable for high-precision injection molding processes should be used. These materials have stable physical and chemical properties and can maintain good fluidity and moldability during the injection molding process, ensuring the dimensional precision and quality stability of injection-molded parts.
General Injection Molding: Precision Considerations Focused on Appearance
Unlike high-precision injection molding, general injection molding has relatively low requirements for the specification precision of injection-molded parts, usually taking the ability to be assembled smoothly as the basic standard. However, it has relatively high requirements for the appearance of injection-molded parts. If necessary, secondary processing methods such as grinding and spraying will be used to improve appearance flaws and enhance the overall aesthetics of the product.
Precision Enigma: The True Definition of Qualified Products
However, does a product that merely meets the basic requirements of the above-mentioned molding methods truly qualify? In fact, high-precision injection molding needs to reach a fairly high level to be considered qualified, while general injection molding, although not requiring extremely precise injection molding machines or specified materials and can be produced with commonly used thermoplastic materials, the determination of qualified products is far from simple.
Meeting the standards of product samples is not the only criterion for qualified products. Even if the mold meets certain requirements and materials, processes, machines, and processing technologies are stable, shortcuts can still be taken during the production process. For example, finding low-price alternative materials to meet customers’ price requirements or using mold materials different from those quoted in advance can seriously affect the precision and quality of injection-molded parts, resulting in unqualified products.
Established in 2007, Dongguan Yize Mold Co., Ltd. has been dedicated to the design and manufacturing of precision molds and the production of precision injection-molded products. With profound technical accumulation and rich industry experience, the company provides a complete set of solutions from product design, precision mold manufacturing, injection molding and assembly to after-sales service for fields such as automotive connectors, medical product injection molding, cleanroom injection molding, and PFA custom injection molding. We ensure the precision of injection-molded parts with a rigorous attitude and superb craftsmanship to create high-quality products for customers. Welcome to call +86 13302615729 (same number for WeChat and WhatsApp).
