相关模具注塑加工过程中有时会出现一些问题，如果不及时处理就会造成产品质量问题，从而让厂家以及消费者都会受到损失，比如说出现喷流纹问题，这是很多人想了解的，下面就来了解了解吧。

　　Sometimes there are some problems in the process of injection molding of relevant molds, if not dealt with in time, it will cause product quality problems, so that manufacturers and consumers will suffer losses, such as jet flow problem, which is a lot of people want to know, let's understand it.

　　注塑加工过程中出现的喷流纹是从浇口沿着流动方向，弯曲如蛇行一样的痕迹，故也叫蛇形流。那它是怎么出现的呢？其一，当熔融材料高速流过喷嘴、流道或浇口等狭窄区域时，会突然进入开放的、相对较宽的区域。熔体在流动方向上像蛇一样弯曲，并在与模具表面接触后冷却。如果这部分材料没有与随后进入型腔的树脂很好地融合，则会在产品上形成喷射图案。

　　In the process of injection molding, the jet flow pattern is curved like a snake along the flow direction from the gate, so it is also called the snake flow. So how did it come about? First, when the molten material flows through a narrow area such as nozzle, runner or gate at high speed, it will suddenly enter an open and relatively wide area. The melt bends like a snake in the direction of flow and cools upon contact with the die surface. If this material does not blend well with the resin that then enters the cavity, a spray pattern will form on the product.

　　其二，树脂从浇口射出的速度太高。注射速度不当，塑料进入浇口后，在接触型腔前没有障碍物，飞得很远，很快冷却，形成射流图案。此外，还有模具设计方面出现了问题，比如：浇口位置和类型不合理，尺寸太小；流道尺寸太小；浇口到型腔的截面积突然增大，流动性不稳定，容易产生射流。等等。

　　Second, the resin shoots out of the gate too fast. Injection speed is not appropriate, after the plastic enters the gate, there is no obstacle before the contact cavity, flies far, cools quickly, forming jet pattern. In addition, there are mold design problems, such as: the location and type of gate is unreasonable, the size is too small; Runner size is too small; The cross section area from the gate to the cavity increases suddenly, the fluidity is unstable, and the jet is easy to produce. And so on.

　　那么针对这个问题，可以怎么去呢？济南注塑加工人员建议，模具设计时，在浇口前面加阻逆针，防止料流喷射，扩大浇口横截面；在成型工艺方面，调低注射速度，提高模具温度，也能减缓与型腔表面接触的树脂的冷却速率，这对防止在充填初期形成表面硬化皮，也具有良好的效果，另外要调低材料的流动性以及降低熔体温度。

　　So how can we solve this problem? Ji 'nan injection molding processing personnel suggest, mold design, in front of the gate resistance needle, prevent material flow jet, expand the gate cross section; In terms of molding process, lower injection speed and higher mold temperature can also slow down the cooling rate of the resin in contact with the cavity surface, which has good effect on preventing the formation of surface hardening skin at the initial stage of filling. In addition, it is necessary to lower the fluidity of the material and reduce the melt temperature.

　　注塑加工过程中为何出现喷流纹的问题？以上就是问题的相关解答了，所以要想避免类似问题的出现，就要在开始注塑加工前做好准备工作，比如相应材料的检查。更多内容就来网站www.sdlqmj.com看看吧！

　　Why does jet flow appear in injection molding process? The above is the relevant answer to the problem, so in order to avoid similar problems, it is necessary to make preparations before the injection molding process, such as the corresponding material inspection. For more information, please visit www.sdlqmj.com.