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Welding method for coating main engine cylinder sleeve with zinc plate

A welding method and zinc plate technology, applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of difficult control of welding operation, difficult installation of zinc plate, and unstable quality, so as to achieve stable welding quality and prolong life , The effect of simple process

Active Publication Date: 2019-04-26
广州文冲船舶修造有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a welding method for enclosing the zinc plate on the cylinder liner of the main engine, so as to solve the problem that the zinc plate is difficult to be installed on the cylinder liner of the main engine of the ship in the prior art, and the welding operation is difficult to control, the efficiency is low and the quality is low. unstable problem

Method used

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  • Welding method for coating main engine cylinder sleeve with zinc plate
  • Welding method for coating main engine cylinder sleeve with zinc plate
  • Welding method for coating main engine cylinder sleeve with zinc plate

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Embodiment 1

[0031] Please also refer to Figure 1-3 , figure 1 It is a schematic diagram of the piston cylinder liner structure of the main engine, figure 2 It is the A-A sectional view of the piston cylinder liner of the main engine, image 3 It is a schematic diagram of the piston cylinder liner structure of the main engine after welding the zinc plate. An innovative welding method for a main engine cylinder liner wrapped zinc plate described in this embodiment includes the following steps:

[0032] Preparation before S1 welding:

[0033] ① Self-made welding wire: select the zinc plate wrapped with the cylinder liner, and cut the zinc plate into 2-3mm lines with a shearing machine;

[0034] ② Zinc plate surface treatment: Use a wire brush to clean the oxide skin on the surface of the zinc plate to prevent the oxide layer on the surface of the zinc plate from hindering the fusion between the metals;

[0035] ③Strengthen the ventilation of the construction site, and the staff must w...

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Abstract

The invention discloses a welding method for coating a main engine cylinder sleeve with a zinc plate. The TIG direct-current welding method is adopted, the zinc plate coating the main engine cylindersleeve is welded, and therefore multiple components of a ship main engine system are prevented from being corroded by sea water. By means of the welding method, the quality of a molten pool is stable,fusion performance is good, no complex technical process is needed in the welding process, a welding wire and base metal are matched, no cracking is generated, operation is simple, and welding quality is high.

Description

technical field [0001] The invention relates to the technical field of ship repairing, in particular to a welding method for a main engine cylinder liner wrapped with a zinc plate. Background technique [0002] The main engine piston and cylinder liner are the power generation system of the ship. The explosive force generated by the up and down movement of the piston drives the crankshaft, which drives the tail shaft to make the propeller push the ship forward. The piston cylinder liner of the main engine needs cooling water to cool the high temperature generated by the piston movement, but the microorganisms in the cooling water will corrode the piston cylinder liner and the frame; The service life of these components, so it is necessary to add a zinc plate on the main engine piston cylinder liner to prevent corrosion and rust spots. [0003] Both the cylinder liner and frame of the main engine are made of cast iron. How to fix the zinc plate to the cylinder liner of the ...

Claims

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Application Information

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IPC IPC(8): B23K9/167B23K9/235B23K9/32
CPCB23K9/167B23K9/235B23K9/32
Inventor 黄建伟揭斌黄上钊陈晓斌黄名章胡志铳
Owner 广州文冲船舶修造有限公司
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