在注塑模具（jù）的設計過程中，除了注塑模具的（de）結構設計外，每個部件（jiàn）的材料選（xuǎn）擇也（yě）是一項非常重要的工作，它直接影響注塑模具的使用壽命、加工成本和質量。的塑（sù）料零件。成型質量。模具的工（gōng）作（zuò）類型是選擇模具材料的主要依據。

In the design process of injection mold, in addition to the structural design of injection mold, the material selection of each component is also a very important work, which directly affects the service life, processing cost and quality of injection mold. Plastic parts. Forming quality. The working type of die is the main basis for selecting die materials.

由於塑料原料、產品生產細度、工作條件和（hé）質（zhì）量要求的不同，注塑模具的工作條件也有很大的（de）不同。因此，在選擇注塑模具材料時，需要從經濟和技術兩方麵綜合考慮。從經濟角度看，對於大批量生產的塑件，無論使用何種（zhǒng）塑料，工藝條件（jiàn）如何，成（chéng）型質（zhì）量有多高（gāo），通常都應采用較好的模具材料和必要的熱處理或其他（tā）強化措施。加以選擇，從而使此類模（mó）具具有較長的使用壽命。

Due to the different plastic raw materials, product production fineness, working conditions and quality requirements, the working conditions of injection mold are also very different. Therefore, when selecting injection mold materials, we need to consider both economic and technical aspects. From an economic point of view, for mass-produced plastic parts, no matter what kind of plastic is used, what the process conditions are, and how high the forming quality is, better mold materials and necessary heat treatment or other strengthening measures should be adopted. So as to make such molds have a long service life.

注（zhù）塑模具一般（bān）在一定的溫度和壓（yā）力下工作。普通熱（rè）塑性塑料注塑模具（jù）的工作（zuò）溫度通常在150℃以下，模（mó）腔成型壓力為25~50MPa。熱（rè）塑性工程塑料精密注塑時，模腔壓力有時可達100MPa以上；而熱固（gù）性塑料注射（shè）成型模具的工作溫度通常為150~220℃，模（mó）腔成型壓（yā）力為30~80MPa。

Injection mold usually works under certain temperature and pressure. The working temperature of ordinary thermoplastic injection mold is usually below 150 ℃, and the molding pressure of mold cavity is 25~50mpa. When thermoplastic engineering plastics are precisely injected, the cavity pressure can sometimes reach more than 100MPa; The working temperature of thermosetting plastic injection molding mold is usually 150~220 ℃, and the molding pressure of mold cavity is 30~80mpa.

在注（zhù）射過程中，模具（jù）型腔、型芯（xīn）和澆注係統都（dōu）受到流動摩擦和（hé）衝擊，因為熔（róng）融塑（sù）料被填充。在脫模過程中（zhōng），模具型腔和澆注係統也受到固化塑件和澆注係統冷凝水的刮擦，會導致模具型腔、型芯和（hé）澆注係統麵壁產生（shēng）一（yī）定程度的損壞。磨損，特別是用（yòng）玻璃纖維等硬質（zhì）填料成型塑料件時，磨損（sǔn）現象更為（wéi）嚴（yán）重。

During the injection process, the mold cavity, core and gating system are subject to flow friction and impact because the molten plastic is filled. In the process of demoulding, the mold cavity and gating system are also scratched by the solidified plastic parts and the condensate of the gating system, which will lead to a certain degree of damage to the mold cavity, core and the surface wall of the gating system. Wear, especially when plastic parts are molded with hard fillers such as glass fiber, is more serious.

濟南注塑（sù）加工廠（chǎng）家提（tí）醒，在注（zhù）塑某些類（lèi）型的塑（sù）料件時，注塑模具在工作過程中有時會受到腐蝕，即塑料在高溫下分解，分解出揮發性腐蝕性氣體到模具型腔、型芯和模具中（zhōng）。澆注（zhù）係統的表麵壁具有腐蝕作用。例如，在（zài）成型聚氯乙（yǐ）烯塑料（liào）、聚甲醛塑（sù）料、氟塑料（liào）、阻燃或（huò）難燃塑料時，在高溫下分解（jiě）的HCl、SO2、HF等氣體對注塑模具有腐蝕作用。因此，在成型不同的塑件時，必須綜合考慮（lǜ）不同的工況。

Jinan injection molding manufacturers remind that during the injection of certain types of plastic parts, the injection mold will sometimes be corroded during the working process, that is, the plastic will decompose at high temperature and decompose volatile corrosive gases into the mold cavity, core and mold. The surface wall of the gating system is corrosive. For example, when forming PVC plastics, polyoxymethylene plastics, fluoroplastics, flame-retardant or flame-retardant plastics, HCl, SO2, HF and other gases decomposed at high temperature have a corrosive effect on the injection mold. Therefore, different working conditions must be comprehensively considered when forming different plastic parts.

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