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Heavy type gas turbine compressor exhaust cylinder casting process

A technology for compressor exhaust and casting process, applied in manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of difficult feeding, complex structure, uneven wall thickness of castings, etc., to reduce the probability of deformation and improve the quality of castings Effect

Active Publication Date: 2015-09-16
LIAONING FU-AN HEAVY INDUSTRY CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a casting process for the exhaust cylinder of a heavy-duty gas turbine compressor, which aims to solve the problem of complex structure, large volume, uneven local wall thickness, difficult feeding and easy deformation of heavy-duty gas turbine exhaust cylinder castings. , easy to produce technical problems such as looseness, cracks, deformation and other defects

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  • Heavy type gas turbine compressor exhaust cylinder casting process
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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings, but it should be pointed out that the implementation of the present invention is not limited to the following embodiments.

[0023] Such as Figure 1-Figure 2 As shown, a heavy-duty gas turbine compressor exhaust cylinder casting process, the casting process includes the following:

[0024] 1) The vertical casting method is adopted, that is, the upper flange 6 of the exhaust cylinder casting is placed above, and the rib plate 10 is placed below, which can reduce the deformation probability of the casting and improve the quality of the casting;

[0025] 2) Because the thickness of the upper flange 6 reaches 318mm, two open risers 1 with a diameter of 1500mm are placed directly above the upper flange 6 of the exhaust cylinder, which can fully feed the thick part; Design the two subsidy 5 corresponding to the open riser 1, and carry out good feeding on the middle part of...

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Abstract

The present invention discloses a heavy type gas turbine compressor exhaust cylinder casting process, in order to fully feed the casting solidification process, a cylinder body is vertically poured, an annular open riser is placed on the upper part of the cylinder body, a plurality of annular blind risers are placed on a sector, a chiller and a patch are simultaneously assembled for feeding the casting; a wood-type skin sample is used for shaping to ensure a precision casting size; an alkaline phenolic resin sand is used as back sand, chrome ore sand is used as a surface sand, and the air permeability and deformability of the sand mold surface can be increased; an open-type water nozzle is used for pouring, the chance of casting distortion can be reduced, and the casting quality is improved. Compared with the prior art, the beneficial effects are that: the technical problems of the defects of being complex in structure, large in volume, uneven in partial casting wall thickness, difficult to feed, easy to deform, easy to loosen, crack and deform, and the like of a heavy type gas turbine compressor exhaust cylinder steel casting part can be effectively solved.

Description

technical field [0001] The invention relates to the field of casting technology, in particular to a casting process for exhaust cylinders of heavy-duty gas turbine compressors. Background technique [0002] The heavy-duty gas turbine is a part of the gas turbine engine that uses high-speed rotating blades to work on the air to increase the air pressure. It needs to withstand a high temperature environment of thousands of degrees, and has the characteristics of high pressure, high temperature, high speed and emergency stop and start. The main manufacturers in demand are the world's top 500 companies such as GE of the United States, Mitsubishi of Japan, and Siemens of Germany. The products are mainly used in large engines in aerospace, marine and power generation fields. Gas engine is a clean energy, which has been widely used in developed countries, and our country is also intensifying its development efforts, with broad prospects in the future. [0003] The exhaust cylinde...

Claims

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Application Information

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IPC IPC(8): B22C9/22B22C9/08
Inventor 李敏穆建华张嘉树薛喜利沈维军苏盛喜
Owner LIAONING FU-AN HEAVY INDUSTRY CO LTD
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