Marine Diesel Engine Tunnel Thruster

Part Name

Type/Material

Advantages/Disadvantages

Diesel Engine Type

Weichai, Changchai and Jingjiang brand

Large torque in the low and medium speed range, continuous output and strong power

Minimum fuel consumption rate of 200g/kW·h, economical and fuel-efficient

Gear chamber cover, cylinder head cover, closed flywheel housing noise reduction design to reduce noise (low noise)

Good quality, cost-effective, long service life.

Other brands

High power consumption, relatively poor quality.

YANMAR

Good quality, high cost, long delivery time.

Propeller

Ni-Al-Bronze (Cu3)

Excellent comprehensive mechanical properties and corrosion resistance.

Ni-Mn Bronze (Cu2)

High strength, good hardness, good wear resistance, good elasticity, no spark, corrosion resistance, non-magnetic, excellent cold working performance, excellent electroplating and welding performance.

Manganese Bronze (Cu1)

It has high strength, hardness and good plasticity, can well withstand pressure processing in hot and cold states, has good corrosion resistance, and has high thermal strength.

Stainless Steel

Good corrosion resistance, high hardness.

Tunnel

WANXIANG / HONGBO

Corrosion resistance, good quality, cost-effective.

Part name

Other low quality suppliers

Result

Our factory

Consequence

Diesel Engine Type

Other brands

High power consumption, relatively poor quality.

Weichai, Changchai and Jingjiang brand

Large torque in the low and medium speed range, continuous output and strong power

Minimum fuel consumption rate of 200g/kW·h, economical and fuel-efficient

Gear chamber cover, cylinder head cover, closed flywheel housing noise reduction design to reduce noise (low noise)

Good quality, cost-effective, long service life.

Propeller

Cast iron

Easy to corrode, easy to rust

Stainless steel

Good corrosion resistance, high hardness

Manganese Bronze (Cu1)

It has high strength, hardness and good plasticity, can well withstand pressure processing in hot and cold states, has good corrosion resistance, and has high thermal strength.

Brass

Dezincification is easy to occur in seawater, resulting in cavitation corrosion and affecting navigation safety.

Ni-Mn Bronze (Cu2)

High strength, good hardness, good wear resistance, good elasticity, no spark, corrosion resistance, non-magnetic, excellent cold working performance, excellent electroplating and welding performance.

Ni-Al-Bronze (Cu3)

Excellent comprehensive mechanical properties, resistance to stress corrosion cracking, corrosion fatigue resistance, cavitation corrosion resistance, erosion resistance, marine biofouling resistance. After heat treatment, it can reach the level of duplex stainless steel. Compared with brass, the corrosion resistance is three times that of brass, and the wear resistance is twice that of brass.

Tunnel

Other brands

Easy to corrode, relatively poor quality

WANXIANG / HONGBO

Corrosion resistance, good quality, cost-effective.