Bimetallic Screw Barrel For Plastic Extruder Machine
1. Descriptions
Twin screw extruder replacement parts in segment design wear-resistant material
Screw kneading block built on modular principle allows various L/D ratio of screw easily be changed to suit different material.
Screw component made of W6Mo5Cr4V2 (it's a kind of high-speed too-steel), the hardness of screw elements is HRC58-62, and able to be changed according to process requirements.
Screw Process:
Blanking ->Punching ->Rough turning ->Hardening & Tempering ->Finish turning ->Rough Milling ->Finish Milling ->Make grooves for bimetallic ->Bimetallic by PTA ->Rough Grinding ->Rough polishing ->Make splines or Keys ->Nitriding ->Finish Grinding ->Polishing ->Packing & Delivery
Barrel Process:
Blanking ->Punching ->Rough turning ->Rough Boring ->Hardening&Tempering ->Finish Boring(0.4-0.8mm) ->Make grooves for bimetallic ->Bimetallic by PTA ->Finish Grinding ->Finish turning ->Milling the feeding hole & exhausting holes ->Nitriding ->Make other small holes,thermometer hole,location hole->Grinding surface of feeding hole & exhausting hole ->Polishing ->Packing & Delivery
2. Screw&barrel use material
| Raw material | The finished product processing requirements |
| 38CrMoAIA, SACM645 | Nitriding treatment |
| Cr12MoV, Cr12, | Alloy steel |
| 38CrMoAIA, SACM645, 40Cr, AISI4140, 42CrMo | Alloy steel |
| 4Cr5MoSiV1,SKD-61,SKD-11 | Bimetallic of the inner hole centrifugal casting |
| GHII3 | nature hard after high temperature |
3.Techniacal parameter
| Model | L/D | Outpu capacity(kg/h) | Driving motor (kw) | Screw rotation speed(rpm) | Center height |
| BLM20 | 20:1 | 3-5 | 1.1/1.5/2.2 | 10-60 | 1000-1400 |
| BLM25 | 25:1 | 10-60 | 2.2/3.0/4.0 | 10-60 | 1000-1400 |
| BLM30 | 25:1 | 10-60 | 2.2/3.0/4.0 | 10-60 | 1000-1400 |
| BLM45 | 25-36:1 | 10-150 | 5.5-22 | 10-150 | 1000-1400 |
| BLM65 | 25-36:1 | 20-150 | 22-75 | 20-150 | 1000 |
| BLM75 | 25-36:1 | 20-150 | 30-132 | 20-150 | 1000 |
| BLM90 | 25-36:1 | 20-110 | 30-185 | 20-110 | 1000-1100 |
| BLM120 | 25-36:1 | 20-90 | 75-280 | 20-90 | 1000-1250 |
| BLM150 | 25-36:1 | 20-75 | 90-400 | 20-75 | 1000-1300 |
