To fight wear MAXI MELT offers twin screw elements in a large scale of materials resistant to abrasive and corrosive wear.
For screw elements we offer a wide scale of materials and treatments to fight wear. For less severe wear conditions the most economical solution is a nitrided element. Whether wear resistance is requested hardened screw elements offer a longer life time reducing your costs. Different solutions are indicated in the table below indicating the specific resistance to abrasive and corrosive wear. For the shaft we recommend nitrided steel with a high torque resistance.
Base materials for plasticizing screws
|DIN standard||Material||Type steel||Treatment||Hardness||Abrasion resistance||Corrosion resistance|
|1.8509||41CrAlMo7||Nitriding steel||Nitrided||950 – 1100 HV5||x||x|
|1.8550||34CrAINi7||Nitriding steel||Nitrided||950 – 1100 HV5||x||x|
|1.2379||X155CrVMo121||Tool steel||Hardened||59 – 63 HRC||xxx||xx|
|–||KPM1||PM material||Hardened||58 – 63 HRC||xxxx||xxx|
|–||KPM2||PM material||Hardened||55 – 60 HRC||xxx||xxxxx|