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Crystalloid laminae composited from single crystal and directional column crystal and preparing method

A technology of compound crystallization and manufacturing method, which is applied in the direction of single crystal growth, single crystal growth, blade support elements, etc., can solve the problems of heavy weight, difficulty of single crystal blade, high heat, etc., and achieve performance improvement and simple manufacturing method Effect

Inactive Publication Date: 2005-08-31
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
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Problems solved by technology

Due to the characteristics of large size, heavy weight and high heat of gas turbine blades, it is quite difficult to develop the directional crystallization process of such large blades, and it is even more difficult to make single crystal blades

Method used

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  • Crystalloid laminae composited from single crystal and directional column crystal and preparing method
  • Crystalloid laminae composited from single crystal and directional column crystal and preparing method
  • Crystalloid laminae composited from single crystal and directional column crystal and preparing method

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Embodiment Construction

[0033] In this embodiment, the large blade (300 mm, weighing 2500 grams) of a 5000 series gas turbine is selected as the research object, and the research work is carried out. The material of the blade is directionally solidified superalloy GTD-111. figure 1 The photo shows the comparison of the shape and size of the aero-engine and the selected industrial gas turbine blades.

[0034] The present invention not only completes the research on the directional crystallization process of large blades during the development process of the gas turbine blade directional crystallization process, but also develops large blades with directional crystallization, such as figure 2 shown. At the same time, a new type of blade with single crystal and directional compound crystal has been successfully developed. The blade is composed of two crystal forms: oriented columnar crystals in the middle of the blade, and single crystals with a certain width (20-30 mm in this embodiment) at the inlet...

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Abstract

A monocrystal and orientational cylindrical crystal combined blade used for gas turbine features that its middle region is orientational cylindrical crystals and its gas inlet and outlet edges have monocrystal form. Its manufacture method includes such steps as installing a composite crystallizer to the crystallizer of orientational crystallizing furnace, smelting by 100-150 of overheat, regulating the temp of mould heater to 1500-1530 deg.C for upper region and 1550-1580 deg.C for lower region, casting, and moving mould downward at 5-7 mm / S.

Description

technical field [0001] The invention belongs to the category of high-temperature alloy precision casting, new materials and new technology fields, and specifically relates to a novel single-crystal and directional columnar-crystal compound crystallization blade and its manufacturing technology, which are used to develop and produce various types of materials and blades for directional solidification of high-temperature alloys . Background technique [0002] Energy is the driving force of national economic construction. The research and development of high-performance gas turbines is an ideal power system required for sustainable development. All developed countries attach great importance to the research and development of gas turbines as a priority development strategy of science and technology, and have received key and rapid development. develop. In order to realize my country's energy sustainable development strategy, the country's energy policy has also made important ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D27/00C30B29/32F01D5/00
Inventor 楼琅洪宁国山赵惠田李瑾伟文怡
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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