- Contact Person : Mr. Yuan Nengjun
- Company Name : Zhejiang Dongbin Rubber Machinery Screw Co., Ltd.
- Tel : 0086-0580-8591200,13905804506
- Fax : 0086-580-8592427
- Address : Zhejiang,Zhoushan,No.28 Donghou Road,Jintang Town,Dinghai District,Zhoushan City
- Country/Region : China
- Zip : 316031
screw and barrel
1 Φ250 screw&barrel for pinned type extruder
2 Technical Specification
3 Hardness After Hardending&Tempering : HB240~280
4 Nitrided Hardness : HV900~950
5 Nitrided Case Depth : 0.55~0.7mm
6 Nitrided Brittleness :Less Than Grade 1
7 Surface Roughness :Ra 0.4
8 Screw Straightness :0.015mm
9 Surface Chromium-Plating’s Hardness After Nitriding≥900HB
10 Chromium –plating Depth :0.05~0.10mm
11 Alloy Hardness : HRC55~62
12 Alloy Depth :1.5~2.0mm
13 Material&Processes
14 Quality 38CrMoALA
15 Qulity Duplex Stainless Steels
16 GH3#Steel
17 Quality Powder Metallurgy Raw Materials
18 Cold/Thermal Spray Hard Metal Process
19 Advanced nitriding Process
20 Corrosion & Abrasion Resistance Bimetal Spraying Process
21 Horniness screw (HTP1:abrasion HTP2:corrosion resistance,HTP3:abrasion and corrosion resistance)
screw and barrel
