Technical Information
Main Base materials
1.38CrMoAlA (SACM645)
Main Alloy Materials
1. Ni-based alloy/Deloro alloy
2. SKD-61 (Special Tool Steel)
2. Tungsten carbide/Wolfram carbide
3. 42CrMo (Ultrahigh StrengthSteel)
3. NiCo-based alloy
4. DC53 (Cold WorkDie Steel)
4. Fe-based alloy
5. W6Mo5Cr4V2 (High-SpeedToolSteel)
5. Co-based alloy
Processing Technics
1. Heat treatment
Technical parameters
Nitriding layer depth:0.5-0.8mm
2. Quenching
Nitrided hardness:900-1000HV
3. Nitriding treatment
Bimetallic layer depth:3 mm
4. Bimetallic alloy welding for screw
Bimetallic hardness:57~69HRC
5. Bimetallic alloy centrifugal casting for barrel
Hard-chrome plating hardness after nitriding:≥950HV
6. Hard-chrome electroplating
Chrome-plating layer depth:0.03-0.09mm
Linearity of screw:0.015mm
Surface roughness:Ra 0.4
EXTRUDER MACHINE SCREW AND BARREL
Material
Alloy-Steel of High-quality
1) 38CrMoALA (JIS SACM645)
2) 42CrMo (JIS SCM440)
3) SKD61
Heat-treatment
Nitriding Treatment
Electroplated hard-chrome finish
High-frequency quenching
Spray coating Bimetallic-alloy
Vacuum quenching
Standards of single screw and cylinder of extruder machine:
Φ20mm~Φ300mm
Ratio of length to diameter L/D= 15~55
Ningbo JAIHO Machinery Co.,Ltd.(JAIHO Group) | Address:Room 3-11,Green Apple Business Plaza,NO.672,Yongfeng West Road,Haishu District,Ningbo City | Tel: 0574-87359334
Fax: 0574-89086758 | E-Mail: thomas@jaihogroup.com.cn Website: www.jaihogroup.com.cn