2022 China New Design Double Screw Extruder Machine - Manufacturer of PTN Series Ring Die for Pellet mill spare parts – Zhengyi
- SHH.ZHENGYI
2022 China New Design Double Screw Extruder Machine - Manufacturer of PTN Series Ring Die for Pellet mill spare parts – Zhengyi Detail:
● PTN series ring die
PTN pellet mill series ring die is made of high-quality alloy steel or high-chromium stainless steel (German standard X46cr13). It is processed by forging, cutting, drilling, heat treatment and other processes. Through strict production management and quality system, the hardness, die hole uniformity and die hole finish of the production ring die have reached very high quality.
Parameter
S/N | Model | Size OD*ID*overall width*pad width -mm | Hole size mm |
1 | PTN450 | 560*450*180*106 | 1-12 |
2 | PTN580 | 680*580*216*140 | 1-12 |
3 | PTN650 | 791*650*245*175 | 1-12 |
Analysis of Abnormal Situation and Recommended Improvements
Reason Analysis for Broken (normally occurred in
continuous casting of small enterprises)
1. Die broken by drive wheel matching surface
2. Die broken by wearing and deformation of die lining ring.
3. Die broken by waring of driving key.
4. Indentation impressed on the surface of the die for the weakening effect of the de-ironing device, and then cause die to crack.
5. Small opening between the die and the compression roller.
6. Die broken by small compression ratio, small diameter fish feed die without pressure-relief vent.
No. | Appearance | Reasons | Solutions |
1 | Particle bends, with cracks |
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2 | With transversal crack |
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3 | Vertical cracks |
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4 | Radiative cracks | Large particles exist (half an oorn or whole corns left) | Control the fineness of raw materials, increase grinding evenness. |
5 | Surface unevenness |
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6. | Whisker like pellet | Too much steam and too large pressure, pellet cracks when left the die. | 1. Reduce steam pressure, use low-pressure steam (15 – 20psi)for conditioning. 2. Check the position of the reducing valve. |
Product detail pictures:


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We strive for excellence, services the customers, hopes to be the top cooperation team and dominator business for personnel, suppliers and prospects, realizes benefit share and continual promotion for 2022 China New Design Double Screw Extruder Machine - Manufacturer of PTN Series Ring Die for Pellet mill spare parts – Zhengyi , The product will supply to all over the world, such as: Czech republic , Iran , Tanzania , Due to good quality and reasonable prices, our products have been exported to more than 10 countries and regions. We are looking forward to cooperating with all customers from at home and abroad. Moreover, customer satisfaction is our eternal pursuit.

The sales manager has a good English level and skilled professional knowledge, we have a good communication. He is a warm and cheerful man, we have a pleasant cooperation and we became very good friends in private.
