Casting technique for bracket casting of marine pod-type electric propulsion system

A technology of electric propulsion and casting process, applied in the direction of manufacturing tools, casting equipment, casting molding equipment, etc., can solve the problems of inability to guarantee the deviation requirement range of castings, difficult to meet the requirements of MT flaw detection, difficult to guarantee the wall thickness of castings, etc. The effect of wrong R&D production method, shortening R&D cycle and reducing shrinkage defects

Active Publication Date: 2012-06-27
KOCEL EQUIP
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AI Technical Summary

Problems solved by technology

Both ends of the casting are large, and the flat and thin fish-shaped connection in the middle is a streamlined structure. The fish-shaped aspect ratio is (4-5): 1. The sand core is easy to deform and difficult to fix, and the wall thickness of the casting is not easy to guarantee.
At present, this kind of casting adopts the process of flat pouring. Due to the great difference in height between the two ends of the casting, the flat and large p

Method used

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Embodiment Construction

[0022] A casting process for a bracket casting of a marine pod type electric propulsion system, the process comprises the following steps:

[0023] a. Three-dimensional process design: Use three-dimensional software for three-dimensional process design, that is, all processes are presented in a three-dimensional manner. The main process plan is to select the parting surface at the largest cross-section of the casting for parting, that is, parting along the length of the fish shape. The parting surface is arranged with an open bottom pouring system, the filter is placed in the runner, the horizontal molding, the core is lowered, and the box is closed; after the box is closed, the pouring is vertically erected, the pouring position is parallel to the parting surface, and the wall thickness of the support meets no riser The modulus condition of self-feeding is Mc>2.5cm, adopt the idea of ​​no riser, properly add overflow riser to overflow slag and balance the weight fluctuation of...

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Abstract

The invention relates to a casting technique, in particular to a casting technique for bracket casting of a marine pod-type electric propulsion system, characterized by comprising the following steps of: designing a three-dimensional technique, performing analog simulation conformation on the casting technique, manufacturing a mould and a sand box tool set, horizontally configuring, manufacturinga core, assembling the core and closing the box, pouring, cooling and opening the box. The casting technique provided by the invention has the advantages of improving the casting cleanness, reducing the shrinkage defects, meeting a wall thickness demand, satisfying UT and MT flaw detection demands, reducing the production cost, and realizing safe production and excellent batch production of bracket casting.

Description

technical field [0001] The invention relates to a casting process, in particular to a casting process for a bracket casting of a marine pod type electric propulsion system. Background technique [0002] The pod-type electric propulsion system has first-class hydrodynamic force and operating efficiency. It integrates the functions of slurry and rudder, and can realize 360° rotation of large ships in situ, and precise GPS positioning. It is mainly installed on ocean-going scientific research ships and deep-water drilling ships. On large high-tech ships such as ice-breaking offshore support ships, the electric propulsion system has occupied more than half of the global pod propulsion device market. The bracket casting is a key part of the propulsion module of the pod-type electric propulsion system. It is installed at the rear of the ship, soaked in water, and can rotate 360°. The material is EN-GJS-400-18U-LT. , UT, MT, PT and other inspections. [0003] Casting weight 5000-...

Claims

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Application Information

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IPC IPC(8): B22C9/10B22C9/08B22C9/22B22D37/00B22D25/02
Inventor 刘利平徐国强张守全刘兴军
Owner KOCEL EQUIP
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