Centrifugal casting or rotocasting is a casting technique that is typically used to cast thin-walled cylinders. It is chiefly used to manufacture rotationally symmetric stock materials in standard sizes for further machining, rather than shaped parts tailored to a particular end-use.
Technical Parameters
Product Name : Bimetallic Barrel
Material: JYN3 + JYK Series Alloy
Suitable Machine: Injection / Extrusion / Blowing ...
Available Size: Φ < 500mm, L < 8,000mm
Process Method: Centrifugal Casting
Surface Hardness: 52-62 HRC
Surface Roughness: < Ra 0.8
Screw Straightness: < 0.02mm/m
Advantages
By casting and sintering high quality alloy powder on barrel inside surface with thickness1.5-2.0mm, screws can get higher performance in both wearing & corrosion resistant performance.
Application
General plastics & engineering plastics with below 70% glass fibre filling.
JYK Series Alloy
At this stage, we have JYK-1, JYK-2 and JYK-3 alloy types and treatments for wear fighting
| TYPE | COMPONENTS | HARDNESS (HRC) | Abrasive RESISTANCE | Corrosion resistance | applications |
| JYK-1, C | Fe, Cr, Ni | 56 – 60 | x | x | Recycling & engineering plastics, reinforced additives less than 20%. |
| JYK-2, B | Ni, W, Cr | 58 – 62 | xx | xx | Moderate corrosive, reinforced additives less than 35% |
| JYK-3, D | Ni, W, Cr | 60 – 64 | xxx | xx | High abrasive and moderate corrosive plastics |
Suitability: (x good) to (xxx excellent).
| TYPE | INGREDIENTS (WEIGHT %) |
| Cr | C | Fe | B | Si | W * | Mn | Ni | Others |
| JYK-1, C | 8 | 1.2 | Bal | 4.3 | 4 | / | 0.65 | 10.8 | < 1.0 |
| JYK-2, B | 8 | 1.4 | 5 | 4 | 3.3 | 16.5 | 0.5 | Bal | < 1.0 |
| JYK-3, D | 8 | 1.4 | 5 | 4 | 3.3 | 40 | 0.5 | Bal | < 1.0 |
*Highest composition of tungsten carbide can go up to 45%, which enables the barrels have 5 times wear-resistance capability than normal Bimetallic Barrels and up to 60% glass fibre filling in general & engineering plastics materials.
