Yq-15 Roller Web Drafter,Web Drafter,Nonwoven Drafter Printing Machine, Embossing Machine,Pleating Machine Co., Ltd. , http://www.nsprintingmachine.com
Injection screw tips, screw barrel, injection molding screw barrel, 38CrMoAlA single injection screw barrel
Specification:
Screw Diameter: Φ 15- Φ 300
L/D ratio: 15-46
Product classification:
Aiming at different plastic products the screw can be chosen from: General type, pin type, barrier type, separation type, and gas-exhausting type, etc.
Technical Information
Base Materials:
1)38CrMoAlA(JIS SACM645)
2)42CrMo(AISI 4140)
3)9Cr18MOV
Bimetallic alloy materials:
1)Fe-based alloy
2)Ni-based alloy/Deloro alloy
3)Co-based alloy
4)NiCo-based alloy
5)Tungsten carbide/Wolfram carbide
Technics:
Heat treatment
High-frequency quenching
Nitriding treatment
Hard-chrome electroplating
Bimetallic alloy welding
Bimetallic alloy centrifugal casting
Technical parameter:
Nitrided layer depth: 0.5-0.8mm
Nitrided hardness: 900-1000HV
Nitrided brittleness: Less than grade 1
Surface roughness: Ra0.4
Linearity of screw: 0.015mm
Hard-chrome plating hardness after nitriding: >=950HV
Chrome-plating layer depth: 0.025-0.085mm
Bimetallic layer depth: 3mm
Warranty and service: 1 year
Our advantages:
1)Excellent raw materials
2)Good customer service
3)Rapid delivery
4)Reasonable price
5)Production quickly
Experienced manufacture, we will be the best choice.
single screw barrel Base Materials:
1)38CrMoAlA(SACM 645)
2)42CrMo(AISI 4140)
3)Cr12MoV(SKD11)
4)4Cr5MoSiV1(SKD61)
5)9Cr18MoV
6)40Cr
Bimetallic Alloy Materials:
1)Fe-based alloy
2)Ni-based alloy
3)Co-based alloy
4)Tungsten carbide
Processing Technology:
Heat treatment
High-frequency quenching
Nitriding treatment
Hard-chrome electroplating
Bimetallic alloy welding
Technical Parameter:
 Nitrided layer depth : 0.50-0.80mm
Nitrided hardness: 900-1100HV
Nitrided brittleness: Less than 2 level
Surface roughness: Ra 0.4
Linearity of screw: 0.015mm
Hard-chrome plating hardness after nitriding: ≥950HV
Chrome-plating layer depth: 0.025~0.10mm
Bimetallic layer depth: 2 mm
Bimetallic hardness: HRC50-65
Suitable Plastic Material:
PP, PE, PVC, ABS, AS, PS etc.