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Field remanufacturing method for upper seam allowance of cylinder body of marine diesel engine

A marine diesel engine and remanufacturing technology is applied in the field of diesel locomotive engines to achieve obvious economic benefits, shorten the remanufacturing maintenance period, and restore the size.

Inactive Publication Date: 2016-03-16
河南汉工机械再制造技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are no related technologies, methods and processes in the existing literature and patents to solve this problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: On-site remanufacturing method of the upper seam of marine diesel engine cylinder block based on one-step flame spray welding

[0018] An on-site remanufacturing method for an upper seam of a marine diesel engine cylinder block comprises the following steps: end face milling rough machining → oil and rust removal → coating strengthening layer → end face milling finishing → end face grinding → quality inspection.

[0019] Use an end milling machine to rough mill the upper seam of the 620V12 diesel engine cylinder to a depth of 1.8mm from the upper plane of the diesel engine cylinder, and the outer diameter of the upper seam ,the inside diameter of: .

[0020] Use oil and rust remover to remove oil and rust on the upper seam surface to ensure that the upper seam surface is free of oil and rust.

[0021] A tooling is placed on the inner wall of the upper seam of the diesel engine, and the outer diameter of the tooling ,the inside diameter of , height 10m...

Embodiment 2

[0026] Example 2: On-site remanufacturing method of upper seam of marine diesel engine cylinder based on induction melting

[0027] An on-site remanufacturing method for an upper seam of a marine diesel engine cylinder block comprises the following steps: end face milling rough machining → oil and rust removal → coating strengthening layer → end face milling finishing → end face grinding → quality inspection.

[0028] Use an end milling machine to rough mill the upper seam of the 620V12 diesel engine cylinder to a depth of 1.2mm from the upper plane of the diesel engine cylinder, and the outer diameter of the upper seam ,the inside diameter of: .

[0029] Use oil and rust remover to remove oil and rust on the upper seam surface to ensure that the upper seam surface is free of oil and rust.

[0030] A tooling is placed on the inner wall of the upper seam of the diesel engine, and the outer diameter of the tooling ,the inside diameter of , height 10mm, protects the inner...

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Abstract

The invention discloses a field remanufacturing method for an upper seam allowance of a cylinder body of a marine diesel engine. The field remanufacturing method includes the following steps that end face milling and rough machining are conducted; oil removing and rust removing are conducted; coating of a strengthening layer is conducted; end face milling and finish machining are conducted; end face grinding is conducted; and quality inspecting is conducted. An adopted coating method includes one-step method flame spray welding or induction melt coating. According to the field remanufacturing method for the upper seam allowance of the cylinder body of the marine diesel engine, the problem that difficulty and cost are high when the marine diesel engine is moved out of a cabin is solved, corrosion of the upper seam allowance of the cylinder body of the marine diesel engine is successfully repaired, the size of the upper seam allowance is recovered, the problem of water leakage between the cylinder body and a cylinder sleeve is solved, the remanufacturing cost is obviously reduced, the remanufacturing and maintaining period is greatly shortened, and obvious economic benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of internal-combustion locomotive engines, in particular to an on-site remanufacturing method for an upper spigot of a marine diesel engine cylinder block. Background technique [0002] The function of the marine diesel engine is to provide power for the safe navigation of the ship and ship machinery, and it is the core part of the ship's power system. Marine diesel engines often fail due to corrosion, ablation and wear during operation, which seriously affects the service life of these parts and the working reliability of marine diesel engines. The National Patent Office has disclosed the application publication number CN102699620A of "a method for repairing a cylinder bore of a diesel engine". The invention relates to the technical field of internal combustion locomotive engines, in particular to a method for repairing cylinder bores of diesel engines. It includes micro-grinding repair process, filling p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/02
CPCB23P6/02
Inventor 翟长生王菡晢翟腾
Owner 河南汉工机械再制造技术有限公司
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