manufacturers of screws, twin screws and steel cylinders for the extrusion of plastics
tredviti
High quality comes from competence
Since 2006 TreDViti has been involved in the design and construction of single and double screw cylinders, co-rotating and counter-rotating screws up to 8 metres in length.
Established with the main aim of responding effectively to the specific needs of customers, it focuses on product quality, speed of supply and compliance with delivery terms.
The versatile equipment, the widely tested and constantly updated software, and the ongoing training of personnel allow TreDViti to create high-precision mechanical parts dedicated to any field of application (agri-food, construction, paper, iron and steel).
Specifically, TreDViti is able to respond effectively to the needs of manufacturers and users of machines and plants for the extrusion of plastics.
High quality
standard
TreDViti manufactures twin and single screw systems for every application: injection, extrusion, mixing and transport.
Particularly versatile numerical control machines and latest generation cad-cam systems guarantee a high degree of precision of the processes which are monitored, step by step, throughout the production process.
metallographic control of raw materials
dimensional control of semi-finished products
identification of single pieces with serial numbers to ensure traceability
dimensional control of the finished pieces
hardness control of the details after the heat treatment
High precision
manufacturing
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SINGLE SCREW SYSTEMS
TreDViti manufactures single screw systems for every application:
injection, extrusion, mixing and transport.
Numerical control machines allow for high precision machining. Screws up to 300 mm in diameter and 9000 mm in length are made in one piece.
TreDViti offers, as construction standard, nitriding steels, hardening steels, stainless steels.
Standard treatments include gas and ionic nitriding, through hardening, surface hardening, chrome plating.
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COUNTER-ROTATING TWIN SCREW
SYSTEMS
TreDViti produces counter-rotating twin screw systems.
The twin screw cylinders are available in monolithic, block and modular constructions.
Pairs of counter-rotating screws up to 250 mm in diameter and 9000 mm in length guaranteed, are made in a monolithic version.
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COATINGS
TreDViti is able to apply wear-resistant coatings to screws.
It uses plasma deposition technologies (P.T.A) using a robotic system integrated with its own 3D programming systems which guarantees constant, highly reproducible features.
To guarantee high purity coatings with constant, reproducible features, we operate with plasma deposition technologies (P.T.A.), controlled and constantly evolving processes and a careful choice of basic materials.
With specific coatings – iron based alloys, cobalt based alloys (stellites), nickel based alloys and nickel based alloys with tungsten carbides – problems of wear, abrasion and corrosion are resolved.