Engineering Capability
Backed by a highly competent team, coupled with engineering capability and extensive experience in international standards and GD&T, we at GTN review the product configuration base lines prior to our acceptance of contract.
GTN’s journey towards delivering a high quality output begins here, by making use of high-end design software’s for 3D modelling, drafting CAM programing and validation, we eliminate potential defect prior to production by verifying and validating the CNC programs and communication done thru DNC for all the CNC machines. By applying advance tools and fixtures, we optimise the development and manufacturing lead time, besides manufacturing the products with high accuracies & close tolerances.
To ensure a consistent approach, GTN tracks and controls the changes, Configuration Management Process helps us to maintain and trace customer supplied documents, engineering documents and amendments for each product.
Special Process
We are proud to say that our Special Processes are one of our key strengths. We perform different Heat Treatment & Surface Treatment processes in-house to improve the Mechanical and Corrosion resistant properties.
Heat Treatment
We have different furnaces, electrically heated upto 1200 °C temperature and calibrated to International standards with water & oil quenching facilities.
(Job Size & Weight – 1500L x 1200W x 1200H & 1500 Kgs)
Facility
- Gas carburising Furnace
- Vertical forced air circulation Furnace
- Fixed hearth furnace
- High temp oven
- Muffle furnace
Capability
| Normalising | AISI 4130, AISI 4140 |
| Hardening & Tempering | AISI 4130, AISI 4140, AISI 410, SA516 Gr 70, ASTM A106 |
| Furnace Annealing | Aluminium alloys |
| Solution Annealing | 17-4PH, SS316, Aluminium alloys |
| Aging | 17-4PH, Aluminium alloys |
| Stress Relieving | Maraging steel |
| Stage Annealing | Copper alloys |
Surface Preparation
Grit Blasting
We can perform Grit blasting with different grit material like Aluminium oxide & Chilled iron and create different Anchor patterns for further coating.
Cleaning
We do surface cleaning with high pressure water Jet machine of Operating pressure max 300 bar & 100-degree Celsius heat.
Super Finishing
Lapping
We perform lapping process with aluminium oxide grit using single and double side lapping machines to prepare finishing requirements of < 0.2?m surface finish and flatness of 0 to 4 light bands.
Honing
We perform honing process to improve the surface finish < 0.2 Microns for the component size ID 25 mm to 500 mm.
Surface Treatment
Coating
We can perform different types of surface coatings including conversion, diffusion and deposition on different material grades.
Conversion Coating
| Phosphating – Coating Thickness 15 Microns |
| Black oxide coating – Hot Alkaline |
| Passivation – Nitric + Sodium di chromate |
Deposition Coating
| Xylan – PTFE – 20 to 30 Microns |
| Molybdenum di sulphide will be 15 to 20 microns |
| Electroless Nickel – 15 to 100 microns (Nickel > 87 – 91% Phosphorus > 9 – 13%) |
| Rilsan coating – 250 to 350 microns |
Diffusion Coating
Diffusion coating with Liquid Nitriding & Oxidation are done to improve wear and corrosion resistance of Products.
Anodising
Diffusion coating with Liquid Nitriding & Oxidation are done to improve wear and corrosion resistance of Products.
Painting
Finished components are painted using Acrylic or Epoxy primers, followed by Polyurethane or Epoxy top coats so as to improve surface protection.
Assembly & Testing
Our assembly experts are experienced with Aero Structural Assembly including sheet metal riveting, Mechanical Assembly & Torqueing.
- Mechanical Assembly & Torqueing (3000 ft-lbs)
- Structural Assembly & Sheet Metal Riveting
- Vacuum Testing (0.760 mmHg)
- Pressure Testing using Hydraulic (up to 10000 PSI)
- Hydrostatic, Nitrogen Gas as medium (up to 25000 PSI)
- Environment Testing with Hot and Cold chamber (-70 to 250 deg. C)
