低压灌注是一种快速成型厂家的原型制造工艺，将聚氨酯材料混合，在常温低压下注入快速模具，并通过材料聚合、交联、固化等化学物理过程形成产品。低压灌注适用于产品开发过程中的小批量生产，也适用于生产结构较简单的盖板和大型厚壁和不平整产品。

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.

该工艺生产的零件可以大到汽车保险杠和医疗手推车尺寸的产品，适用数量在15-2000套之间是合适的。在汽车RIM低压注塑领域，如保险杠、挡泥板、方向盘、仪表板、进气格栅、门板、前端模组、气囊盖板等汽车内外饰件，思骏达原型厂积累了丰富的经验。大量的生产经验和经验技术方法。

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.

山东快速成型厂家提醒您低压灌注成型具有以下特点：

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

低压灌注成型工艺不仅受动力学和热力学决定，还受物理条件的影响；材料凝固时间长，材料凝固和冷却占用大部分时间；成型材料具有热固性；加工在低压下进行，因此只适用于产品结构较简单的快速成型。

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.

单体或预聚物以液态通过计量泵按一定比例进入混合头进行混合。混合物注入模具后，在模具内迅速反应，交联固化。

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.

低压灌注成型使用的材料主要是聚氨酯材料。通过改变材料的混合比，可以获得不同的材料弹性模量，从而获得所需的材料性能。固化后的材料具有类似于ABS、PP或PS的物理性能。该工艺适用于生产壁厚较大、壁厚不均匀的原型产品。

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.

低压灌注成型可以生产出坚固、灵活、轻便的零件，并且易于进行表面处理。与典型的真空铸造材料相比，它的材料制作时间比较短。注入模具中的混合物的粘度比熔融的热塑性聚合物低得多，因此可以使用RIM技术加工大尺寸、轻量和薄壁的物品。这种轻薄的产品需要较小的夹紧力，因此需要的设备较小，投资成本低。

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.

低压灌注应用于快速成型行业的特点内容便是如此了，如果您对其有需求的话就来关注我们的网站www.metferro.com咨询吧！

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.metferro.com Com consultation!