在進行注塑成型加工時難免會發(fā)生一些質(zhì)量問題，比如說出現(xiàn)空隙問題，下面山東快速成型廠家就來為您講解一番。

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.

表觀

apparent

制品內(nèi)部的空隙表現(xiàn)為圓形或拉長的氣泡形式。只有透明的注塑件才可以從外面看到里面的空隙；不透明的制品無法從外面測出。空隙通常是發(fā)生在壁相對較厚的制品內(nèi)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

當(dāng)注塑件內(nèi)有氣泡時，通常認(rèn)為是模具內(nèi)的空氣被流入模腔的熔料裹入。另一個解釋是料筒內(nèi)的水氣和氣泡會想方設(shè)法進入到注塑件產(chǎn)品的內(nèi)部。開始的時候，生產(chǎn)的產(chǎn)品會形成一層硬皮，視模具冷卻的程度或快或慢的往內(nèi)發(fā)展。然而在厚壁區(qū)域里，中部分仍繼續(xù)保持較長時間的粘性。外皮有足夠強度抵抗任何應(yīng)力收縮。結(jié)果，里面的熔料被往外拉長，在產(chǎn)品中部分形成一個仍然是塑料的空隙。

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、保壓太低，提高保壓壓力

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

2、壁溫度太低，提高模壁溫度

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

3、壓時間太短，提高保壓時間

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

4、熔料溫度太高，降低熔體溫度

4. Melt temperature is too high, reduce melt temperature

5、橫截面太小，增加澆口橫截面，縮短澆道

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

6、孔太小，增大噴嘴孔

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

7、口開在薄壁區(qū)，澆口開在厚壁區(qū)

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現(xiàn)的？以上就是出現(xiàn)的原因了，如果您對此有什么想咨詢的或者有需求的，就來我們網(wǎng)站http://www.ebook5.cn咨詢吧！

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.ebook5.cn Consult!