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A Nitrogen Filling System for Propeller Mold

A technology of propellers and casting molds, which is applied in the direction of casting molds, casting mold components, casting molding equipment, etc., can solve the problems of easy oxidation and oxidation slag, and achieve the effect of avoiding easy oxidation, simple operation mode and improving practicability

Active Publication Date: 2017-12-22
ZHENJIANG TONGZHOU PROPELLER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a propeller mold nitrogen filling system to solve the problem of easily oxidized oxidized slag in the casting process of copper liquid in view of the above-mentioned deficiencies in the prior art

Method used

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  • A Nitrogen Filling System for Propeller Mold
  • A Nitrogen Filling System for Propeller Mold

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Experimental program
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Embodiment Construction

[0014] Technical scheme of the present invention is realized like this:

[0015] A nitrogen charging system for a propeller mold as shown in the figure includes a supporting shell 1, a casting mold 2, a pouring pipe 3, a pouring box 4 and a nitrogen injection device 5, and a mold cavity 6 is provided in the casting mold 2. A first exhaust outlet 7, a second exhaust outlet 8, a first pouring inlet 9 and a second pouring inlet 10 are provided, the first exhaust outlet 7 is located at the top of the mold 2, the second exhaust outlet 8 is located at the side wall of the mold, Both the first pouring inlet 9 and the second pouring inlet 10 are located at the bottom of the casting mold, the casting mold 2 is fixed in the supporting shell 1, the first exhaust outlet 7 is exposed outside the supporting shell 1, and the first exhaust outlet 7 is provided with A cover plate 11, the cover plate 11 is provided with an overflow hole 12, and the second exhaust outlet 8 is provided with a sea...

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PUM

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Abstract

The invention relates to a novel propeller casting mold nitrogen charging system which comprises a supporting shell, a casting mold, a pouring pipeline, a pouring box and a nitrogen injecting device. A mold cavity is formed in the casting mold which is provided with a first exhaust outlet, a second exhaust outlet, a first pouring inlet and a second pouring inlet. The pouring box is fixed to the top end of the supporting shell and provided with a pouring hole, the pouring pipeline is provided with a pouring inlet and two pouring outlets, the pouring inlet penetrates through the pouring hole to be communicated with the pouring box, and the two pouring outlets are connected with the first pouring inlet and the second pouring inlet in the casting mold. The nitrogen injecting device comprises a nitrogen cylinder, a reducing valve, a gas inlet pipeline and a connector. The problem that copper liquid is prone to oxidation and consequently oxidized slag is generated in the pouring process is solved.

Description

technical field [0001] The invention relates to a propeller molding process, in particular to a nitrogen filling system for a propeller mold. technical background [0002] The propeller is the main part that provides power for the hull. At present, the propeller is driven by the main engine. The quality of the propeller is directly related to the sailing performance of the ship. It is very long. During the pouring process, the copper liquid contacts with the air in the runner and the mold, resulting in secondary oxidation of the copper liquid; the traditional gravity bottom pouring method has the following disadvantages: the pouring height is large, and the copper liquid is prone to turbulent flow. It reacts with oxygen in the air in the runner to produce oxidized slag; the pouring time is long, the contact time between the copper liquid and the air in the mold is long, the oxidation reaction occurs, and oxidized slag is produced; in order to remove the oxidized slag of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/08B22D21/02
Inventor 陈永道王湘来施小建徐高峰
Owner ZHENJIANG TONGZHOU PROPELLER