低壓灌注是一種快速成型廠家的原型制造工藝，將聚氨酯材料混合，在常溫低壓下注入快速模具，并通過材料聚合、交聯、固化等化學物理過程形成產品。低壓灌注適用于產品開發過程中的小批量生產，也適用于生產結構較簡單的蓋板和大型厚壁和不平整產品。

Low pressure pouring is a prototype manufacturing process of rapid prototyping manufacturers. Polyurethane materials are mixed and injected into rapid molds at room temperature and low pressure, and products are formed through chemical and physical processes such as material polymerization, crosslinking and curing. Low pressure pouring is suitable for small batch production in the process of product development, as well as production of cover plate with simple structure and large thick wall and uneven products.

該工藝生產的零件可以大到汽車保險杠和醫療手推車尺寸的產品，適用數量在15-2000套之間是合適的。在汽車RIM低壓注塑領域，如保險杠、擋泥板、方向盤、儀表板、進氣格柵、門板、前端模組、氣囊蓋板等汽車內外飾件，思駿達原型廠積累了豐富的經驗。大量的生產經驗和經驗技術方法。

The parts produced by this process can be as large as the size of automobile bumper and medical trolley, and the applicable quantity is between 15-2000 sets. Sijunda prototype factory has accumulated rich experience in the field of automobile rim low-pressure injection molding, such as bumper, fender, steering wheel, instrument panel, air inlet grille, door panel, front-end module, airbag cover plate and other automobile interior and exterior trim parts. A lot of production experience and technical methods.

山東快速成型廠家提醒您低壓灌注成型具有以下特點：

Shandong rapid prototyping manufacturer reminds you that low-pressure pouring molding has the following characteristics:

低壓灌注成型工藝不僅受動力學和熱力學決定，還受物理條件的影響；材料凝固時間長，材料凝固和冷卻占用大部分時間；成型材料具有熱固性；加工在低壓下進行，因此只適用于產品結構較簡單的快速成型。

Low pressure pouring molding process is not only determined by kinetics and thermodynamics, but also affected by physical conditions; The solidification time of the material is long, and the solidification and cooling of the material occupy most of the time; The molding material is thermosetting; The processing is carried out under low pressure, so it is only suitable for rapid prototyping with simple product structure.

單體或預聚物以液態通過計量泵按一定比例進入混合頭進行混合。混合物注入模具后，在模具內迅速反應，交聯固化。

The monomer or prepolymer enters the mixing head in liquid state through the metering pump in a certain proportion for mixing. After the mixture is injected into the mold, it reacts rapidly in the mold, crosslinks and solidifies.

低壓灌注成型使用的材料主要是聚氨酯材料。通過改變材料的混合比，可以獲得不同的材料彈性模量，從而獲得所需的材料性能。固化后的材料具有類似于ABS、PP或PS的物理性能。該工藝適用于生產壁厚較大、壁厚不均勻的原型產品。

The materials used in low-pressure pouring molding are mainly polyurethane materials. By changing the mixing ratio of materials, different elastic modulus of materials can be obtained, so as to obtain the required material properties. The cured material has physical properties similar to ABS, PP or PS. The process is suitable for producing prototype products with large and uneven wall thickness.

低壓灌注成型可以生產出堅固、靈活、輕便的零件，并且易于進行表面處理。與典型的真空鑄造材料相比，它的材料制作時間比較短。注入模具中的混合物的粘度比熔融的熱塑性聚合物低得多，因此可以使用RIM技術加工大尺寸、輕量和薄壁的物品。這種輕薄的產品需要較小的夾緊力，因此需要的設備較小，投資成本低。

Low pressure injection molding can produce strong, flexible and lightweight parts, and it is easy to carry out surface treatment. Compared with typical vacuum casting materials, its material manufacturing time is relatively short. The viscosity of the mixture injected into the mold is much lower than that of molten thermoplastic polymer, so rim technology can be used to process large-size, light-weight and thin-walled articles. This light and thin product requires less clamping force, so it requires less equipment and low investment cost.

低壓灌注應用于快速成型行業的特點內容便是如此了，如果您對其有需求的話就來關注我們的網站www.networkcoms.cn咨詢吧！

This is the characteristic content of low-pressure perfusion applied in rapid prototyping industry. If you need it, please pay attention to our website www.networkcoms.cn Com consultation!