Рroduction
Production Capabilities
Dontechcenter operates its own production facilities, including machining sections, thermal and galvanic treatment units, as well as a cold powder coating zone. We perform a full cycle of restoration and manufacturing of ship equipment components — from restoring part geometry to applying protective coatings — ensuring high precision, compliance with classification society requirements, and the technological reliability of each unit.
Thermal Spraying Section
Scope of work in the thermal spraying section
Restoration of seating surfaces
- • For bearings
- • For gland seals
Housing restoration
- • Pumps
- • Actuators
- • Manufacturing and restoration of babbitt bearings
Spraying materials
- • Bronze
- • Aluminum
- • Babbitt
- • Steel
- • Ceramics
- • Other materials
- • Application of babbitt coating in a cold plasma environment
Application of various materials
- • Wire
- • Powder materials
- • Cord materials
Advantages of spraying technology
Compared to traditional welding, spraying technology avoids overheating of the restored part, thermal corrosion, and mixing of the base and applied metals.
Gas-powder cladding can also be used for material protection and creation of wear-resistant coatings.
Restoration of Ship Mechanism Components
Restoration of housings, shafts, and bearings by powder spraying in a cold plasma environment
Machining of bearings.
Ship Equipment Repair
During operation, ship equipment undergoes significant wear, especially on the most loaded parts of mechanisms that remain in service. Specialists at DONTEXCENTR offer cost-effective repair solutions by restoring geometry and seating surfaces using thermal spraying. This allows avoiding the purchase of new equipment.
Offered restoration services:
- • Restoration of sliding bearings based on babbitt compounds of any size (including work with bronze alloys)
- • Restoration of seating surfaces using various materials to reinforce wear areas
- • Restoration of geometry of working surfaces with the ability to assign required mechanical properties
- • Application of anti-corrosion materials
Advantages over traditional welding methods:
- • No mixing of the material of the repaired part and the applied material
- • Low process temperature, excluding thermal deformation of the item
- • No pores or inhomogeneities in the materials
CNC Machining Section
Machining on CNC equipment
The section is equipped with modern CNC milling machines, including 3- and 5-axis machining centers, as well as electrical discharge machining (EDM) equipment. High-precision parts for various ship systems are manufactured here.
We manufacture parts for the following equipment:
- • Radar stations
- • Logs
- • Steering machines
- • Remote automated control systems (DAC)
- • Gyrocompasses
- • Pneumatic starters
- • Actuators and more
The CNC section also supports all other technological divisions of the company. Custom mechanical elements are manufactured based on individual drawings, including shafts, bushings, flanges, adapters, and other assemblies.
We ensure high processing accuracy, minimal tolerances, and excellent surface quality through multi-axis machining and modern CAM systems.
Galvanics
Dontechcenter performs protective and decorative coating using galvanic and chemical methods.
We ensure corrosion resistance of metal products, extend their service life, and improve appearance in compliance with industry standards and regulations.
Zinc Coating
Zinc is applied by electrochemical method. It protects steel parts from corrosion, suitable for fasteners, housings, and components used in aggressive environments. Post-passivation is available.
Zinc-Nickel Coating
A zinc-nickel alloy (10–15% Ni) provides several times higher corrosion resistance compared to standard zinc coating. It is used for critical parts requiring increased protection and heat resistance.
Passivation
Applied after zinc coating to enhance corrosion resistance and adjust surface color. We perform yellow and clear passivation using trivalent chromium compounds, meeting ecological standards.
Black Oxide Coating
Formation of an oxide film on steel surfaces. Provides basic corrosion protection and improves appearance. Used for tools and mechanical components. Finished with oil preservation.
Nickel Plating
Electrochemical nickel plating increases wear resistance, chemical resistance, and offers decorative shine. Used in mechanical engineering, instrumentation, and for restoring part geometry.
Tinning
Tin coating ensures excellent solderability and oxidation protection. Used for electrical and electronic components and parts that come into contact with food.
Chemical Phosphating
Formation of a phosphate layer on steel surfaces. Improves paint adhesion, reduces wear, and prevents corrosion under fluctuating humidity. Used as pre-painting treatment or for preservation.
Mechanical Processing Section
Processing on Universal Machines
Dontechcenter has its own machining section equipped with universal lathes, milling, drilling, grinding, boring, gear cutting, and keyway slotting machines. This enables the production and restoration of a wide range of ship equipment components with high precision and compliance with technical requirements.
Manufactured and Restored Components
- • Shaft lines and sliding bushings
- • Axles, pins, studs, and dowels for ship mechanisms
- • Housings, covers, and seating parts for gearboxes, pumps, and compressors
- • Keyways, splines, and threads on shafts and hubs
- • Flanges, brackets, and bases for equipment mounting
- • Faceplates, adapter couplings, thrust disks, and retaining rings
Gear Cutting Operations
Using gear cutting machines, we perform precision processing:
- • Cutting straight and helical gears based on standard or custom drawings
- • Restoration of gear transmissions and mating components
- • Manufacturing of gears, gear rims, spline shafts, and gear couplings
Keyway Processing Operations
On specialized machines for keyway slotting, the company performs:
- • Slotting of straight and radius keyways
- • Cutting of internal and external spline connections
- • Restoration of worn connections with fitting adjustment
Heat Treatment: Hardening
To increase hardness, wear resistance, and service life of components, the company performs steel hardening followed by tempering. The treatment is carried out according to individual parameters depending on the material grade and operating conditions. Heat treatment is applied during the repair of shafts, axles, gears, mating elements, and other loaded units.
Inspection and Documentation
After mechanical and heat treatment, all items undergo inspection for geometry, hardness, and surface roughness. The work is supported by a full set of technical documentation and, if required, coordinated with classification societies.
Additional Services:
- • Restoration of pump housings (including bronze and other materials)
- • Restoration of jack rods
- • Application of ceramic coating on shaft journals at contact points with rubber seals, significantly extending shaft life
If the required technological process is not listed — we are ready to develop a custom solution based on your technical requirements.