Impeller lotus leaf drainage decompression casting system and casting process thereof

A casting system and casting process technology, applied in the field of impeller casting, can solve problems such as impeller production process defects, and achieve the effects of enhancing the scour resistance of high temperature and high pressure airflow, avoiding scouring time, and enhancing scouring ability.

Pending Publication Date: 2021-12-10
HEFEI RUIHONG HEAVY MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

b class="d_n">[0004] The technical problem to be solved by the present invention is to provide an impeller lotus leaf drainage and decompression casting system and its casting process to solve the defects in the impeller production process in the prior art described in the background technology The problem

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  • Impeller lotus leaf drainage decompression casting system and casting process thereof
  • Impeller lotus leaf drainage decompression casting system and casting process thereof
  • Impeller lotus leaf drainage decompression casting system and casting process thereof

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Embodiment Construction

[0033] The following is a detailed description of the embodiments of the present invention. The specific casting process methods not indicated in the following implementations are carried out by the enterprise in accordance with the international foundry standards and the program files formulated by the IOS9001 passed by the enterprise. Unless otherwise defined or stated, All professional and scientific terms used herein have the same meanings as those familiar to those skilled in the art of foundry engineering.

[0034] Such as Figure 1-7 , an impeller lotus leaf drainage and decompression casting system, including a casting body 14, the lower end of the casting body 14 is provided with a drainage and decompression gate 7, and the inner wall of the drainage and decompression gate 14 is provided with four inner runners Buffer risers 15, each of the ingate buffer risers 15 is connected to the ingate 6 respectively, every two ingates 6 are connected to the U-shaped ingate split...

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Abstract

The invention discloses an impeller lotus leaf drainage decompression casting system and a casting process thereof and relates to the technical field of impeller casting. According to the impeller lotus leaf drainage decompression casting system and the casting process thereof, a large amount of gas is prevented from rolling to form oxides in the metal liquid casting process by controlling the moisture, the compactness, the strength, dust, the mesh number, the air permeability, the burning loss and the hardness of molding sand; the high-temperature molten metal scouring resistance of the surface of a sand mold cavity is enhanced, the high-temperature and high-pressure airflow scouring resistance of the surface of the sand mold cavity is enhanced, and the crack resistance of the coating of the cavity is ensured; casting of a casting is completed within 16 s, the rising speed of metal liquid in the sand mold cavity is effectively controlled, and the too long scouring time of high-temperature and high-pressure metal liquid and airflow on the surface of the mold cavity is avoided; and casting defects of air holes, cold shut, cracks, slag inclusion, wrinkles and the like caused by excessive double-layer oxide film slag inclusion are inhibited by effectively controlling the flowing speed of the metal liquid entering the mold cavity and the internal flowing speed of the metal liquid in the mold cavity.

Description

technical field [0001] The invention relates to the technical field of impeller casting, in particular to an impeller lotus leaf drainage and decompression casting system and a casting process thereof. Background technique [0002] The technology of turbulent double-layer oxide film involvement was born in Europe in the 1990s. John Campbell proposed in the book "Foundry Principles" (translated by Li Dianzhong, academician Li Yiyi) to control the turbulent flow of molten metal and the flow rate of filling mold so as to Measures to suppress the involvement of oxide film, thus theoretically confirm that the casting quality is planned and designed through the digitalization of casting process parameters, and the casting quality grade standard can be determined through casting numerical simulation. [0003] The existing impeller process causes too much oxide to be involved in the metal liquid during production, the liquid metal fluid flows in disorder during the casting and moldi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/08B22C9/02B22C9/22
CPCB22C9/082B22C9/088B22C9/02B22C9/22
Inventor 费文杰杜厚柏
Owner HEFEI RUIHONG HEAVY MACHINERY
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