Production method for welded cylinder block of marine diesel engine

A technology for marine diesel engines and manufacturing methods, applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problems of increasing the difficulty of component manufacturing and assembly, large welding stress, and difficult welding process, etc., to reduce production and processing costs, The effect of reducing assembly errors and saving the amount of machining

CN103878498AActive Publication Date: 2014-06-25HUDONG HEAVY MACHINERY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-06-25

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Abstract

The invention discloses a production method for a welded cylinder block of a marine diesel engine. The welded cylinder block comprises a scavenging device and a cylinder block box of a welded structure. The cylinder block box comprises a baseplate, a plurality of first transverse webs, a plurality of second transverse webs, a plurality of middle partitions, a first side palate, a second side plate, a plurality of triangular tube plates and a face plate. The production method includes step 1, scribing lines on a platform; step 2, assembling the cylinder block box; step 3, assembling the triangular tube plates; step 4, assembling the scavenging device. Technological measures such as control of scribing and mounting errors and proper shrinkage allowance are adopted, so that quality of the welded cylinder block is improved.
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Description

technical field

[0001] The invention relates to the processing of diesel engine components, in particular to a method for manufacturing a welded cylinder block of a marine diesel engine, which belongs to the technical field of diesel engines. Background technique

[0002] The structure of the marine diesel engine cylinder block is usually a combination of the cylinder block and the scavenging manifold. At present, the cylinder block is generally produced by casting process, because the casting process of the cylinder block is easy to produce defects such as cold cracks, and it is not easy to weld and repair. Welding repair is also very difficult, and there is often color difference in the welding repair area, so the casting blank of the cylinder block has a certain scrap rate, resulting in an increase in production cost. In addition, the casting also has defects such as large machining dust.

[0003] Recently, a welded cylinder block has appeared, and its biggest feature is ...

Examples

Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention cannot be limited by this.

[0041] The invention provides a manufacturing method for manufacturing welded cylinder blocks of marine diesel engines, please refer to figure 1 , the welded cylinder block includes a cylinder block box 1 and a scavenging device 2 . The cylinder body box 1 includes a bottom plate 18, a plurality of first transverse webs 11, a plurality of second transverse webs 12, a plurality of intermediate partitions 15, a first side plate 13, a second side plate 14, and a plurality of triangular tubes plate 17 and panel 16; said bottom plate 18 is arranged horizontally at the bottom; see Figure 4 , the plurality of first transverse webs 11, the plurality of second transverse webs 12 and the plurality of intermediate partitions 15 are arranged in the transverse direction and are w...