1. The production process of the screw

Prepare raw materials: Screws are usually made of high-strength and wear-resistant materials, such as 38CrMo material.

Preparation work before processing: This includes preparing a pipe with a diameter 10 times smaller than the inner diameter of a thick walled pipe? 15mm, twice the length of the thick walled pipe plus 150mm round steel, then a 100mm long rectangular prism is planed at one end, and a square hole is machined in the middle. The high-speed steel cutting head is fixed in the square hole with screws.

Точність обробка: включає кроки такі як полірування внутрішня отвір машина ствол і різання процес патрон.

2. The production process of the machine barrel

Підготуйте сирі матеріали: The машина ствол є зазвичай виготовлені з високоміцні і зносостійкі матеріали, такі як 38CrMo матеріал.

3. Matching of screw and barrel
The fit between the screw and the barrel is very important, and the size of the fit gap between them can affect the production capacity, power consumption, service life, and machining cost of the extruder. Generally speaking, the fit clearance between the screw and the barrel should be selected based on the processing conditions and the performance of the material being processed, with a general value of (0.002-0.005) d.