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Method for repairing plunger of ship steering engine

A repair method and rudder technology, applied in ship parts, ship construction, ships, etc., can solve the problems of increasing the difficulty of processing, affecting the chrome plating process, destroying the metallographic structure of the plunger of the ship steering gear, etc. The effect of increasing the difficulty of processing

Inactive Publication Date: 2012-04-18
WUHAN MARINE MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the inability to meet all repair requirements in the prior art, and after repair, damage to the original metallographic structure of the ship steering gear plunger, welding deformation, increased processing difficulty, influence on the subsequent chrome plating process and Defects and problems that are difficult to maintain on site, provide a method that can meet all repair requirements, and will not damage the original metallographic structure of the ship steering gear plunger, will not deform during welding, will not increase the difficulty of processing, and will not affect the follow-up The method of repairing the plunger of the ship steering gear with chrome plating process and simple on-site maintenance

Method used

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Embodiment Construction

[0033] The present invention will be described in further detail below by means of specific embodiments

[0034] A method for repairing a ship steering gear plunger comprises the following process steps: a pretreatment process, a spray plating process, a brush plating process, a bath plating process, a simulation assessment process and an acceptance process.

[0035] The pretreatment process includes the following steps: inspection of the ship steering gear plunger, purification treatment, hole reaming treatment, protection of non-repair parts and sandblasting;

[0036] The inspection of the ship steering gear plunger refers to: remove the stains on the outer surface of the ship steering gear plunger, and expose the heavily corroded area on the outer circle surface of the ship steering gear plunger;

[0037] The purification treatment refers to: manual grinding and rust removal and polishing of the severely corroded area on the outer surface of the steering gear plunger found ...

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PUM

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Abstract

The invention relates to a method for repairing a plunger of a ship steering engine, in particular to a method for repairing the plunger of the ship steering engine, which is particularly suitable to the repair of the plunger of the ship steering engine for a sea ship. The method sequentially comprises the following steps: preprocessing, spraying, brush plating, bath plating, simulating and examining, and accepting. The invention not only can fully repair the plunger of the ship steering engine to meet total repair requirements, but also can not damage original metallographic structures and base materials of the plunger of the ship steering engine without causing welding distortion, can not increase the processing difficulty of the plunger of the ship steering machine and can not influence the subsequent bath chromium plating process of the plunger of the ship steering engine after the repair, and is convenient for field maintenance.

Description

technical field [0001] The invention relates to a repair method for a ship steering gear plunger, in particular to a repair method for a ship steering gear plunger, and is particularly suitable for repairing a ship steering gear plunger of a marine ship. Background technique [0002] The base material of the ship steering gear plunger is low-carbon alloy steel, and the surface is plated with double-layer chromium, which are milky white 50-60μm and hard chromium 7-11μm. Due to long-term use in the marine environment, local distribution will appear on the surface at the welding place Uneven and different depths of corrosion pits, as well as multiple bruises and scratches, seriously affect the safety of use, and need to be rebuilt and repaired. Due to the large diameter of the plunger of the ship steering gear, the high working pressure, and the requirement of resistance to seawater immersion, the repair requirements are relatively high. The existing steering gear plunger repa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B9/00
Inventor 张春晖金彩吴平安吴军杨新明
Owner WUHAN MARINE MACHINERY PLANT
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