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Pouring technology for marine propeller

A marine propeller and process technology, applied in the field of ships, can solve the problems of air bubbles on the surface of the propeller and poor pouring process, etc., and achieve the effect of less charcoal smoke and impurities

Inactive Publication Date: 2016-08-03
TAIZHOU JIAOJIANG YONGGU SHIP PROPELLER FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pouring process is simple and easy to cause air bubbles to form on the surface of the propeller

Method used

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Embodiment Construction

[0053] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contribution as required after reading this specification, but as long as they are within the rights of the present invention All claims are protected by patent law.

[0054] (1) Sprue cup preparation

[0055] (1.1) The sprue cup is made by a molder, and its capacity should be compatible with the pouring weight of the product. It is strictly forbidden to be made into a funnel shape;

[0056] (1.2) The newly made sprue cup is dried in the oven along with the sand mold, and the old sprue cup is repaired smoothly, and then dried with a blowtorch after painting with graphite paint;

[0057] (1.3) Each product should be assembled with a sprue cup before pouring. Temporary placement is strictly prohibited. The mouth of the sprue cup is covered with high-temperature-re...

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Abstract

The invention discloses a pouring process for a marine propeller, which solves the problem that air bubbles are easily formed on the surface of the propeller due to the simple pouring process. The key points of the technical scheme are the following steps: determining the opening time of the blast furnace; preparing the sprue cup; and preparing the pouring ladle; Pouring operation; the inspector records the pouring temperature, pouring time, pouring sequence and the pouring status of each product during the entire pouring process, so that the propeller cast by this process has a firm texture, a smooth surface, and no air bubbles inside. Effect.

Description

technical field [0001] The invention relates to a propeller pouring process and belongs to the technical field of ships. Background technique [0002] The propeller is the main component 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. Because the propeller cuts the water flow in the water, if there are small protrusions on the surface of the propeller, a large number of cavitation will be generated when the propeller cuts the water, and the explosion of the cavitation will make the surface of the propeller very easy to be damaged, directly affecting the quality of the propeller . [0003] A Chinese patent document propeller pouring process whose publication number is CN103878314A is now retrieved. The pouring process is simple and easy to cause air bubbles to form on the surface of the propeller. Contents of the invention [0004] The purpos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/22B22C9/02B22C9/08B22D41/02
CPCB22C9/22B22C9/02B22C9/082B22C9/088B22D41/02
Inventor 王以军
Owner TAIZHOU JIAOJIANG YONGGU SHIP PROPELLER FACTORY
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