



PRODUCT SPECIFICATION | ||||||||
Power of locknut | 100KN-35000KN Capacity of injection: 30g-30000g | |||||||
Diameter of screw | Φ20-Φ220 | |||||||
Screw Structure and compression ratio can be designed according to different raw materials |
TECHNICAL SPECIFICATION | ||||||||
Conventional material | 38CrMoAIA, SACM645, AISI4140, SKD61, GH113 | |||||||
Nitrided hardness | HV950-1200 | |||||||
Nitrided depth | 0.5-0.9MM | |||||||
Quenching hardness | HRC58-62 | |||||||
Nitrided brittleness | Less than grade 2 | |||||||
Surface roughness | Ra 0.4 | |||||||
Screw straightness | 0.015mm | |||||||
Chromium plating layer hardness after nitriding | >=950HV | |||||||
Chrome plate thickness | 0.05-0.10MM | |||||||
Alloy depth | 2.0-3.0MM |
Raw material | The finished product processing equipments | ||||||
38CrMoAIA, SACM645 | Nitriding treatment | ||||||
Cr12MoV, H13 | High frequency quenching | ||||||
38CrMoAIA, SACM645,40Cr, AISI4140, 42CrMo | Inner hole bimetallic centrifugal casting | ||||||
GH113 | Nature hard after high temperature |







Zhoushan. ALVEN is a manufacturing enterprise, with professional design and manufacture of precision screw cylinder and the
ability of rubber and plastic machinery parts.Product design and development manufacturing, sales, after-sale service as one, the
introduction of demestic and foreign advanced processing equipment, plus several years of manufacturing experience, the product
ability in the formation of production process control, production facilities, inspection and testing and other aspects of human
and material resources, to improve the quality of products as the core concept. Companies adhere to the customer as the center, to
strictly control the quality of the production process, the implementation of lean production management to ensure that the
quality of the testing process continues to be effective, excellent product quality.
ALVEN the way forward is very long and very difficult, we will continue to work hard, continue to progress, to win more
customers support and more broad market.
PROFESSIONAL ABILITY
3. SCREW PRODUCTS CUSTOMIZATION
4. SCREW PRODUCTS TRANSFORMATION
5. SCREW PRODUCTS REPAIR