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System for casting and pouring propeller of ship

A pouring system and propeller technology, applied in the field of ship propeller casting pouring system, can solve the problems of shrinkage porosity, low yield of molten metal, oxidative slag inclusion in castings, etc.

Active Publication Date: 2009-11-04
WUHU FUJIHENG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, gravity casting is used for ship propellers, and the gating system needs to be equipped with straight gates, horizontal gates and slag collection ladles. Castings are prone to defects such as oxidized slag inclusions and shrinkage porosity. It is difficult to guarantee the quality of ship propeller castings, and the consumption of molten metal is large. The yield of liquid is low

Method used

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  • System for casting and pouring propeller of ship

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Embodiment Construction

[0011] Such as figure 1 As shown, the ship propeller casting gating system includes a closed pressure tank 11, a ladle 10, a liquid riser 7, a gas injection mechanism, a graphite chilling sleeve 6, a core sand sleeve 5, a tile core box 4, a core 3 and The sand mold 2, the gas injection mechanism includes a compressed air inlet pipe 9 and a compressed air outlet pipe 12 connected to the same height in the middle of the closed pressure tank 11, the ladle 10 is placed in the closed pressure tank 11, and the liquid riser 7 is extended to accommodate high temperature. In the ladle 10 of the molten steel 8, a cavity 14 and a riser 1 on the upper part of the cavity 14 are formed between the sand mold 2 and the core 3 located at the center of the sand mold 2. Graphite quenching sleeve 6, core sand sleeve 5 and tile core box 3, core sand sleeve 5 is located above graphite chilling sleeve 6, graphite chilling sleeve 6 and core sand sleeve 5 have a riser pipe 7 through Through the throu...

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Abstract

The invention discloses a system for casting and pouring a propeller of a ship, comprising a sealing pressure tank (11), a steel ladle (10) which is arranged inside the sealing pressure tank (11) and used for containing high temperature molten steel (8), a liquid lifting tube (7) extending inside the steel ladle (10), a gas injection mechanism communicated with the sealing pressure tank (11), as well as a sand mold (2) and a mud core (3) that are arranged on the top of the sealing pressure tank (11); the sand mold (2) and the mud core (3) form a die cavity (14) and a shrink head (1), and the top of the liquid lifting tube (7) is communicated with the die cavity (14). By adopting the structure, the system for casting and pouring the propeller of the ship has stable liquid metal stamping, good formability and compact structure of cast parts as well as high mechanical property, so that the quality of the cast parts of the propeller of the ship can be ensured; the consumption of the metal liquid is reduced, and the yield of the metal liquid is increased, so that the system is applicable to the casting mold of various materials in batches.

Description

technical field [0001] The invention relates to a ship propeller casting gating system. Background technique [0002] Ship propellers are one of the important parts of ship products, especially military propellers must not only have good corrosion resistance and mechanical properties, but also must not have casting defects such as oxidized slag inclusions and pores. The propeller of a ship can be regarded as a wing that rotates while advancing. The blades rotate in sea water to convert the rotational power of the engine into propulsion. It consists of multiple blades and a central hub. The blades are like a The twisted, slender wings are mounted on the hub to which the motor shaft is attached and turns it. At present, gravity casting is used for ship propellers, and the gating system needs to be equipped with straight gates, horizontal gates and slag collection ladles. Castings are prone to defects such as oxidized slag inclusions and shrinkage porosity. It is difficult to ...

Claims

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Application Information

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IPC IPC(8): B22D18/04
Inventor 陶红陈殷舫刘金明颜世民
Owner WUHU FUJIHENG MACHINERY
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