Steering rudder rudder bearing hole wear-resistant layer alloy material

Abstract

The invention discloses a novel steering rudder rudder bearing hole wear-resistant layer alloy material which is prepared from the Ni-Cu-P ternary alloy material and comprises the following components by weight percent: 65-70% of Ni, 15-20% of Cu and 10-15% of P. Cu is introduced into the Ni-P chemical plating solution to bring the change of the content of P in the plating, thereby influencing the microstructure and crystallization of the Ni-Cu-P chemical plating, improving the thermal stability, weldability and corrosion resistance of the plating, increasing the service life of the whole rudder blade by 3-5 years, reducing the rudder replacement frequency for large ships, reducing the maintenance cost of ships and enabling the ships to create more economic benefits.

Description

technical field [0001] The invention relates to an alloy material, in particular to an alloy material suitable for use in a steering rudder bearing hole with an alloy wear-resistant layer for large ocean transport ships, engineering ships and inland water ships. Background technique [0002] The steering rudder is installed behind the propeller of the ship. During the normal running of the ship, the direction of the steering rudder is consistent with the sailing direction. Once the ship needs to turn, the steering rudder rotates at a certain angle under the action of power, and the thrust generated by the propeller Converted to lateral force, pushing the ship to turn. At present, most of the rudder bearing materials at home and abroad are 20Mn, its performance is similar to that of 15Mn steel, its hardenability, strength and plasticity are better than that of No. 20 steel, its cutting performance has also been improved, and its low temperature impact toughness and welding pe...

AI Technical Summary

Problems solved by technology

However, its wear resistance and corrosion resistance are poor. Since large ocean transport ships and engineering ships mostly travel in the ocean, seawater is corrosive, which greatly affects the service life of the steering rudder. Generally, the service life of the steering rudder is In 20-25 years, when the steering rudder is corroded to a certain extent, it must be replaced. Each replacement requires a lot of time and money. Especially for large ocean transport ships, the loss is quite large every day when the rudder is suspended. wear resistance and corrosion resistance, a layer of alloy wear-resistant layer is chemically plated on the rudder bearing hole, the Ni-P alloy plated material currently used in the market, but the thermal stability and weldability of the Ni-P alloy plated material and poor corrosion resistance, can not achieve the desired effect