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Points to pay attention to and their handling during the use of the hot runner system

Publisher: Administrator Date: 2023-11-02

There is no big problem with using ordinary plastic in the hot runner system, but general engineering materials can sometimes cause a lot of trouble for the hot runner system. Some products containing fiberglass have poor flowability and can corrode the tip, so there are few domestic hot runner companies using pointed nozzles to make products with high fiberglass content.

The tip of the hot runner tip is easily worn off by fiberglass. After the tip is worn out, there is too much cold glue in the gate area, and the injection pressure is not enough to flush it out, so the glue will not come out. So many companies cannot produce glue after using their hot nozzles a few times. If the tip of the mouth is made of materials such as high-speed steel, the thermal conductivity of high-speed steel is poor, and the temperature difference between the tip of the mouth and the flow channel is too large, which will also produce cold materials and make it difficult to inject.

Foreign hot runner companies have seized many orders in this field relying on the thermal conductivity and wear resistance of their own steel, which can only be said that our skills are inferior. Sometimes, the hot runner ratio is not the difference between foreign companies and domestic companies, but the entire country's metal processing, including steel, including heat treatment. Many people who make domestic hot runners understand this.

Since hard power cannot compare with foreign hot runner companies, we can only rely on soft power. We can only make up for these shortcomings by relying on flexible design, excellent after-sales service, and injection molding technology.

When designing, try to avoid designing a pointed nozzle form, and needle valves are also acceptable. The needle of a needle valve is sometimes difficult to punch, and there will be professional articles introducing this. Da Shui Kou is relatively simple, we won't talk about it here. When designing a pointed hot runner for fiberglass materials, there should be sufficient space in the tip area to ensure sufficient plastic. In fact, plastic is still a good insulation layer during the injection molding process. This is the first point to pay attention to, and secondly, the contact points between the hot nozzle and the mold. Of course, the fewer the contact points, the better, but it is necessary to ensure the premise of the structure.

The only thing that domestic hot runners can do better than foreign hot runners is after-sales service. As our after-sales service will definitely do our best when encountering such cases, problems will be solved immediately. However, it all depends on the skills of the after-sales engineer.

In short, everything has a difficult side, and there are always more methods than problems. By calming down, one can definitely solve all hot runner problems.



Dongguan Haochen Hot Runner Technology Co., Ltd
Contact Us:
Mobile: 13712972461
Tel: 0769 85478528/400 0988 117
Fax: 0769-85478508
Email: sales@hostar888.com
Website: www.hanfu78.cn
Address: No. 11 Zhenlang Road, Wusha Caiwu Industrial Second Road, Chang'an Town, Dongguan City

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