Planetary screw YPT72 / K6 (environment-friendly) screw / barrel YPT72 imported full hard alloy steel, high temperature resistance below 650 degrees, overall hardness HRC58 ° -62 °, wear resistance, corrosion resistance, high pressure resistance, smoothness Ra0.4um; barrel K6 cobalt-based alloy material, high temperature resistance, high speed resistance, high pressure resistance, wear resistance, corrosion resistance type, suitable for PM, PP, PBT, ABS + PC, PET + GF, SPVC, RPVC, TPU, PA and other engineering materials plus 40% -60% glass fiber; also suitable for adding iron powder, magnetic powder, copper powder, aluminum powder. SKD61 / K1 screw / barrel SKD61 screw imported materials, high temperature resistance below 500 degrees, vacuum nitriding, overall hardness HRC58 ° -60 °, nitriding surface depth: 0.5-1.0mm, barrel K1 iron-based alloy material, wear-resistant Economical, smoothness: Ra0.4um; suitable for engineering materials plus glass fiber below 20%. Suitable for mixed color PC, PC + ABS alloy, PC + 20% glass fiber, PE + mineral powder, nylon PA + 20% glass fiber, etc.
Planetary screw maintenance precautions
1. Do not start the machine when the screw does not reach the preset temperature.
2, to prevent metal fragments and debris from falling into the hopper, if processing recycled materials, you need to add a magnetic hopper to prevent iron filings from entering the barrel.
3. When using anti-salin, make sure that the plastic in the barrel is completely melted, so as not to damage the transmission system parts when the screw is retracted.
4. When using new plastic, the remaining material of the screw should be cleaned.
5.When the temperature of the molten plastic is normal, but the black spots or discoloration of the molten plastic are continuously found, the rubber screw should be checked.
6. During processing, try to plasticize the material as much as possible, do not allow metal foreign matter to be mixed into the material, and reduce the rotating torque of the screw.