• Model NO.：Dia20-220mm
• Nitrided Hardness：900-1000hv
• Nitrided Brittleness：Less Than Grade 1
• Surface Roughness：Ra0.4
• Linearity of Screw：0.015mm
• Transport Package：Film Wrapped in Wooden Case
• Specification：ISO9001: 2008
• Trademark：Zhongyang
• Origin：China(Mainland)
• HS Code：84779000
• Production Capacity：200 Sets,Month

Basic Info.

Model NO. Dia20-220mm Nitrided Hardness 900-1000hv Nitrided Brittleness Less Than Grade 1 Surface Roughness Ra0.4 Linearity of Screw 0.015mm Transport Package Film Wrapped in Wooden Case Specification ISO9001: 2008 Trademark Zhongyang Origin China(Mainland) HS Code 84779000 Production Capacity 200 Sets/Month

Product Description

Bimetallic screw in type tungsten carbide for injection

Specification:
Screw diameter: Φ 20mm-Φ 220mm
Mould clamping force: 250T-3200T
Shot weight: 30G-30000G

Technical Information

Base Materials:
1). 38CrMoAlA(JIS SACM645).
2). 42CrMo(AISI 4140).
3). 4Cr5MoSi V1 (JIS SKD-61).
4). 9Cr18MOV
5). HPT

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.