Φ250–Φ1570 mm · up to 7,584 holes
Pelletizing Die Plates
For PP, PE and specialty polymers on lines from 200,000 to 600,000 t/a, with a TiC-NiCr cermet hard face.
Die plates · Pelletizer knives · Cutter hubs
Underwater Pelletizing Die Plates for Large PP and PE Lines
Made to your drawing or sample, with a cermet hard face developed and vacuum brazed by JINFENG. Reference plates run on lines from 200,000 to 600,000 t/a.
- 1993
- Making pelletizing components since
- 71
- Reference die plates for polyolefin lines
- Φ1570 mm
- Largest die plate, with 7,584 die holes
- 600,000 t/a
- Largest line supplied, PP on Coperion ZSK 380
What we make
Die Plates, Pelletizer Knives and Cutter Hubs
The parts at the cutting end of an underwater pelletizer, from one manufacturer.
Cermet knives: 3+ months reference life
Pelletizer Knives
Complete knives with TiC-NiCr cermet, TiC-Fe or tool-steel working areas, made to your drawing or sample.
Flexible or rigid
Cutter Hubs
Supplied on their own or fitted with complete knives. Worn hubs can be reconditioned.
Also available: EVA, POE and EVOH die plates · die plate repair · underwater pelletizer parts
Why JINFENG
What Goes Into a JINFENG Die Plate
Our own cermet hard face
JINFENG developed its TiC-NiCr cermet in-house. It keeps its hardness up to about 800 °C, resists knife wear and cavitation, and bonds well to the stainless steel body.
Thermal design for large plates
Thermal and melt-flow simulation checks the heating-channel layout before machining, to keep temperature even across thousands of die holes and reduce the risk of frozen holes.
Machined and brazed in-house
Machining, die-hole drilling, grinding and vacuum brazing all take place in JINFENG's own workshop in Shenyang.
- 0.01 mm
- Die-hole roundness on five CNC double-head drilling machines
- 0.005 mm
- Parallelism on 1.2 m and 1.8 m circular-table grinders
- 2.5 m
- CNC gantry milling machine
- ±2 °C
- Temperature uniformity in the 1.5 m and 1.7 m vacuum brazing furnaces
References
Die Plates for Large PP and PE Lines
Since the 450,000 t/a Tianjin Sinopec SABIC plate in 2012, the largest of its type at the time, JINFENG has supplied die plates to world-scale polyolefin plants.
600,000 t/a
PP · Coperion ZSK 380
- Die plate
- Φ1223 × 112.5 mm
- Die holes
- 3,375
- First run
- 2023
500,000 t/a
PE · JSW CIM 510
- Die plate
- Φ1570 × 135 mm
- Die holes
- 7,584
- First run
- 2025
450,000 t/a
PE · Kobe LCM 500 / LCM 560
- Die plate
- Φ1430 × 165 mm
- Die holes
- 4,652–4,850
- First run
- 2018–2024
450,000 t/a
PP · JSW CMP 387
- Die plate
- Φ1300 × 160 mm
- Die holes
- 2,832
- First run
- 2012
Project work
Selected Projects
Die plate for a 450,000 t/a polypropylene line
A Φ1300 mm die plate with 2,832 die holes for a JSW CMP387 line, at that time the largest die plate of its type.
Same-day knife supply for pellet tails
Imported PE knives chipped and the line began producing pellets with tails. JINFENG sent knives from stock with a technician by air the same day and helped sharpen them until the line produced qualified pellets again.
EVA die plate for a high melt-index grade
An EVA-specific JINFENG die plate solved the pellet shape and sticking problems the line had with an imported plate on a high melt-index grade.
How we work
From Drawing to Delivery
Send drawing or sample
A drawing, photos or the existing part, with the polymer, extruder and pelletizer data.
Technical review
Our engineers check interfaces, die-hole layout, hard face and heating channels, then quote.
Manufacturing
CNC machining, die-hole drilling, grinding and vacuum brazing in our own workshop.
Inspection
Dimensions, hardness, die holes, surfaces and heating-channel pressure, checked against the drawing.
Packing and delivery
Crated for shipment. Lead time for a new die plate is 4–10 months.
Frequently Asked Questions
Can you make a die plate from a drawing or a sample?
Yes. Send the drawing with its revision, or the existing plate or photos with its main dimensions, together with the polymer, quantity and operating conditions.
How long does a new die plate take?
Lead time for a new die plate is 4–10 months, depending on its size and design.
What size die plates can JINFENG make?
Reference die plates range from about Φ250 mm to Φ1570 mm, the largest with 7,584 die holes for a 500,000 t/a PE line.
Can you repair a worn die plate?
Yes. JINFENG inspects the plate first, then quotes the work, such as regrinding or replacing the hard face. See die plate repair.
Discuss Your Die Plate Requirement
Send a drawing, sample details or photos with your line data. Our engineers will come back with questions or a quotation.