Nickel-chromium-molybdenum alloy automatic surfacing technology for diesel engine cylinder head for ship

Abstract

The invention discloses a nickel-chromium-molybdenum alloy automatic surfacing technology for a diesel engine cylinder head for a ship, which is used for surface hardening machining of a diesel jetting area of a combustion chamber of a cylinder head. In the technology, an automatic surfacing machine is used to carry out surfacing hardening of the nickel-chromium-molybdenum alloy on the surface of the diesel jetting area of the combustion chamber of the cylinder head with one surfacing layer, wherein the automatic surfacing machine comprises a rotating worktable which can swing and rotate and a numerical control soldering machine of which the position of a soldering gun can be adjusted. The invention changes the conventional manual surfacing mode, and realizes the automation of the nickel-chromium-molybdenum alloy surfacing technology for the cylinder head, thereby reducing the labor intensity, simplifying the technological steps, shortening the machining period and decreasing the consumption of soldering materials.

Description

technical field [0001] The invention relates to a welding processing method, in particular to a nickel-chromium-molybdenum alloy automatic surfacing welding process method for the cylinder head of a large marine diesel engine. Background technique [0002] The cylinder head is one of the important parts of the high-power low-speed marine diesel engine, which together with the cylinder liner, piston head and exhaust valve constitute the combustion chamber of the diesel engine. Because the atomization and combustion of diesel oil are carried out in the combustion chamber, the working conditions of the cylinder head are relatively harsh, and it has to bear great thermal and mechanical stress, especially the area where the inner wall of the combustion chamber of the cylinder head is located at the injection point of the fuel valve. It is to withstand the impact of high-temperature and high-pressure gas, so in the processing of the cylinder head, this area must be surfacing with ...

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to overcome the deficiencies of the existing marine diesel engine cylinder head manual surfacing welding method, and provide a nickel-chromium-molybdenum alloy automatic surfacing welding process method for the marine diesel engine cylinder head, which changes the traditional manual surfacing welding method. The automatic surfacing machine realizes the nickel-chromium-molybdenum alloy surfacing process of the diesel engine cylinder head, thereby reducing labor intensity, simplifying process steps, shortening the processing cycle, and reducing the consumption of welding materials

Images