在进行注塑成型加工时难免会发生一些质量问题，比如说出现空隙问题，下面山东快速成型厂家就来为您讲解一番。

It is inevitable that some quality problems will occur during the injection molding process, such as the gap problem, and the Shandong rapid prototyping manufacturer will explain it to you.

表观

apparent

制品内部的空隙表现为圆形或拉长的气泡形式。只有透明的注塑件才可以从外面看到里面的空隙；不透明的制品无法从外面测出。空隙通常是发生在壁相对较厚的制品内并且是在zui厚的地方。

The gap inside the product is in the form of round or elongated bubbles. Only transparent injection molded parts can see the gaps inside from the outside; Opaque products cannot be measured from the outside. Voids usually occur in products with relatively thick walls and in places with thick zui.

物理原因

Physical causes

当注塑件内有气泡时，通常认为是模具内的空气被流入模腔的熔料裹入。另一个解释是料筒内的水气和气泡会想方设法进入到注塑件产品的内部。开始的时候，生产的产品会形成一层硬皮，视模具冷却的程度或快或慢的往内发展。然而在厚壁区域里，中部分仍继续保持较长时间的粘性。外皮有足够强度抵抗任何应力收缩。结果，里面的熔料被往外拉长，在产品中部分形成一个仍然是塑料的空隙。

When there are bubbles in the injection molded part, it is generally considered that the air in the mold is wrapped by the molten material flowing into the mold cavity. Another explanation is that the moisture and bubbles in the barrel will try to enter the interior of the injection molded part. At the beginning, the products produced will form a layer of hard skin, depending on the degree of mold cooling, or fast or slow to develop inward. However, in the thick wall region, the middle part still remains sticky for a long time. The outer skin has sufficient strength to resist any stress shrinkage. As a result, the molten material inside is stretched out, forming a gap in the product that is still plastic.

1、保压太低，提高保压压力

1. The holding pressure is too low, increase the holding pressure

2、壁温度太低，提高模壁温度

2. The wall temperature is too low, increase the mold wall temperature

3、压时间太短，提高保压时间

3. The pressure holding time is too short, so the pressure holding time is increased

4、熔料温度太高，降低熔体温度

4. Melt temperature is too high, reduce melt temperature

5、横截面太小，增加浇口横截面，缩短浇道

5. If the cross section is too small, increase the cross section of gate and shorten the gate

6、孔太小，增大喷嘴孔

6. The hole is too small, increase the nozzle hole

7、口开在薄壁区，浇口开在厚壁区

7. The gate is opened in the thin wall area, and the gate is opened in the thick wall area

注塑快速成型缺陷之空隙怎么出现的？以上就是出现的原因了，如果您对此有什么想咨询的或者有需求的，就来我们网站http://www.metferro.com咨询吧！

How does the gap of injection molding rapid prototyping defects appear? The above is the reason. If you have any questions or needs, please come to our website http://www.metferro.com Consult!