Tel: 86-13470016753
XINLU OEM & OD – YOUR MOST STABLE LONG-TERM PARTNER!
Types of screws [Screws with different structures can be selected for different physical properties of plastics to improve the plasticizing effect.
Gradual type, mutant type, wavy type, barrier type, double screen type, diversion type, separation type, exhaust type, pin type, hybrid type, double head type, triple head type . Multi-head type, granulation type, etc.
| Technical Parameters | |||
| material (that sth is made of) | 38CrMoAlA | Tempering hardness | HB240°～280° |
| Nitriding hardness | HV900°～1000° | Nitriding depth | 0.5 to 0.7mm |
| Nitriding embrittlement | ≤ Level 2 | surface roughness | Ra0.4 |
| Screw straightness | 0.015mm | Surface hard chromium plating after nitriding | HV≥950HV |
| Chrome layer thickness | 0.05 to 0.10mm | Alloy Depth | 0.8 to 2.0mm |
| Bi-alloy hardness | HRC56°～65° | straightness | 0.015mm/m |
| Inner and outer diameter tolerance | ≤0.02mm | circular jump | <0.04mm |
| Tolerance of total screw length | ≤0.03mm | Keyway Spline Tolerance Grade | 7 |
NO.8, Liuhang Road Xihou IndustrialEstate,Jintang Town, Dinghai District,Zhoushan City, ZhejiangProvince China
86-13470016753
86-13470016753
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