Gear Housing

Gear Housing

The gear housing was made of 18CrNiMo7-6 material, and forged to a 5 tons column block, through series of testing and process to reach the target profile and function

The gear housings are used for wind turbine installation vessel, as a part of jacking system to support the vessel on seabed stably. The manufacture procedure as following:

1. Material certificate inspection,

2. Mechanical properties test for raw material,

3. Forged and ultrasonic test (EN10228-3) class 3,

4. Pre-turning according to drawing, and remaining decent clearance,

5. Heat treatment to make the mechanical properties to reach the target value,

6. Mechanical properties, ultrasonic test and hardness test for the accompany specimen,

7. Semi-fine machining for the tooth and fine machining for the rest,

8. Carburization, check the required values of hardness and hardening depth,

9. Milling of tooth, and carry out of liquid penetrate test,

10. Full dimension inspection including tooth profile inspection by gear test center,  

11. Protection and package class depend on store environment /period and transport way,

12. Documentation archive and copy to client.