保定塑料机械设备厂

It is the most common and effective way for plastic processing units to remove the plastic fixed on the screw by burning or roasting, but acetylene flame must not be used to clean the screw. The temperature of acetylene flame can reach 3000 C. Cleaning the screw with acetylene flame will not only destroy the metal characteristics of the screw, but also significantly affect the mechanical tolerance omojulj.37ix.com.cnpeidianfb.37ix.com.cnweilan.37ix.com.cntuoliutacc.37ix.com.cnjiaqiaob.37ix.com.cnchu

weiji.37ix.com.cnf the screw. If the flame of acetylene flame becomes persistent blue when roasting a part of the screw, it means that the metal structure of this part of the screw has changed, which will lead to the reduction of wear resistance of this part, and even the abrasion resistance layer and matrix metal peeling. In addition, local heating with acetylene flame can also cause overheating on one side of the screw, leading to screw bending. Most of the screw rods are made of 4140HT steel, and the tolerance is very close, generally within 0.03mm. The flatness of the screw is mostly within 0.01 mm. When the screw is baked and cooled by acetylene flame, it is usually difficult to return to the original flatness. Correct and effective method: use blowtorch to clean the screw immediately after use. Because the screw has heat in the process of processing, the heat distribution of the screw is still uniform.