Why is it difficult to maintain the set temperature in a cold-feed rubber extruder?
Time：
2018-02-27
Today, the trend of replacing hot-feed rubber extruders with cold-feed rubber extruders has become increasingly evident, reflecting advances in technology. Currently, cold-feed rubber extruders are being adopted more widely and play a crucial role in the rubber industry. However, during the operation and maintenance of rubber-processing machinery, certain technical issues are inevitable—and cold-feed rubber extruders are no exception. Therefore, in daily production, operators must approach these challenges with diligence and strive to resolve them promptly. During the extrusion process, if the temperature controlled by the mold‑temperature unit proves difficult to reduce, then in the course of production…
Today, the trend of replacing hot-feed rubber extruders with cold-feed rubber extruders has become increasingly pronounced, reflecting advances in technology. Currently, cold-feed rubber extruders are being adopted more widely and play a vital role in the rubber industry.
However, during the operation and maintenance of rubber machinery, certain production‑related technical issues are inevitable—and cold‑feed rubber extruders are no exception. Therefore, in daily production, operators must approach these challenges with diligence and strive to resolve them. During the extrusion process, a common problem is that the temperature set on the mold‑temperature controller becomes difficult to reduce. So why does this phenomenon—where the set temperature is hard to control—occur in cold‑feed rubber extruders? As we all know, mold‑temperature controllers rely on circulating cooling water to regulate temperature; and there are primarily three reasons behind this issue:
1. The cooling water has not been connected at all; in this case, the relevant operators must inspect the system and take appropriate corrective measures.
2. The cooling water valve has not been opened; be sure to check it before starting the extrusion process to avoid potential issues.
3. The cooling water valve is not fully open.
During the extrusion process, a cold-feed rubber extruder generates frictional heat, causing the temperature to rise—this is the principle of frictional heating. At this point, cooling water is required to regulate and control the temperature.
In summary, the supply of cooling water is the primary factor in controlling the extruder’s temperature. The extruder temperature must be maintained within an appropriate range—neither too high nor too low—since either extreme will directly affect the quality of the extruded product. Therefore, careful attention must be paid during extrusion operations with a rubber extruder.
Related news
Shuangda
Hebei Shuangda Rubber Machinery Co., Ltd.
Tel：400-0319-386
Landline：+86-319-6017632
Email：shuangdaxiangsu@126.com
Official website：www.shuangdajx.com
Addr：Liyuantun Industrial Zone, Weixian County, Xingtai City, Hebei Province
Copyright © 2022 Hebei Shuangda Rubber Machinery Co., Ltd.