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Complicated thin-walled investment casting and method for evaluating casting performance of nickel-based alloy

A casting performance, nickel-based alloy technology, applied in the direction of casting molding equipment, casting mold, casting mold composition, etc., can solve the problems of large and complex thin-walled castings, shorten the development cycle and other problems

Active Publication Date: 2014-04-02
ZHONGCHAO HANGYU INVESTMENT CASTING S&T CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the defects in the prior art, the object of the present invention is to provide a large complex thin-walled investment casting and method for nickel-based alloy casting performance evaluation, so as to optimize the structural design of the casting and effectively solve the problem of forming large complex thin-walled castings. Difficult problems while reducing R&D costs and shortening R&D cycles

Method used

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  • Complicated thin-walled investment casting and method for evaluating casting performance of nickel-based alloy
  • Complicated thin-walled investment casting and method for evaluating casting performance of nickel-based alloy
  • Complicated thin-walled investment casting and method for evaluating casting performance of nickel-based alloy

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Experimental program
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Effect test

Embodiment 1

[0035] like figure 1 As shown, a structural schematic diagram of a complex thin-walled investment casting used for nickel-based alloy casting performance evaluation, the casting structure is a ring-in-ring structure, including an inner ring 1 and an outer ring 2, the inner ring and the outer ring are Concentric circles, through the center of the circle, a cross-shaped runner 3 connecting the inner ring and the outer ring is provided. The runner divides the inner ring and the outer ring into four large fan-shaped areas 4. The cross-shaped runner connects the outer The ends of the rings are all Y-shaped structures 5, four small fan-shaped areas 6 are formed between the four Y-shaped structures 5 and the outer ring 2, and the small fan-shaped areas 6 are located adjacent to the above-mentioned two large fan-shaped areas 4. A plurality of small pillars 7 are provided on the upper two openings of each Y-shaped structure 5, and in this embodiment, four small pillars 7 are provided o...

Embodiment 2

[0048] The concrete parameter of casting among the present embodiment:

[0049] The width of the two groups of variable sections (steps) is 40mm, and the length is 20mm. >2.5mm;

[0050] The dimensions of the four groups of thin plates (thin plates for investigating the filling capacity of large-area thin-walled molds) are shown in Table 1;

[0051] The size of the large-area annular thin plate on the outer circumference is: 365mm×100mm×2.5mm; 340mm×100mm×2mm; 315mm×100mm×1.5mm; 290mm×100mm×1mm;

[0052] The height of the fed thin plate is 100mm, and the thickness of the thin plate is 1mm and 2mm respectively, and the length is 1-24 times of its thickness, that is, 1mm->24mm, 2mm->48mm.

[0053] Use medium temperature wax to press the wax mold, press figure 1 The structure is assembled, and then the ceramic mold shell is made through the traditional shell making process. After the mold shell is prepared, it is dewaxed in a dewaxing kettle, roasted in a roasting furnace at 9...

Embodiment 3

[0055] The concrete parameter of casting among the present embodiment:

[0056] The width of the two groups of variable sections (steps) is 40mm, and the length is 20mm. >2.5mm;

[0057] The dimensions of the four groups of thin plates (thin plates for investigating the filling capacity of large-area thin-walled molds) are shown in Table 1;

[0058] The size of the large-area annular thin plate on the outer circumference is: 365mm×100mm×2.5mm; 340mm×100mm×2mm; 315mm×100mm×1.5mm; 290mm×100mm×1mm;

[0059] The height of the fed thin plate is 100mm, and the thickness of the thin plate is 1mm and 2mm respectively, and the length is 1-24 times of the thickness, that is, 1mm->24mm, 2mm->48mm.

[0060] Use medium temperature wax to press the wax mold, press figure 1 The structure is assembled, and then the ceramic mold shell is made through the traditional shell making process. After the mold shell is prepared, it is dewaxed in a dewaxing kettle, roasted in a roasting furnace at 1...

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Abstract

The invention provides a complicated thin-walled investment casting and a method for evaluating casting performance of nickel-based alloy and a method. The complicated thin-walled investment casting comprises an inner ring and an outer ring, wherein the inner ring and the outer ring are concentric circles. In order to study a sheet design of a large-area thin-walled filling capacity, large-area sheets with different area-thickness ratios are designed; in order to study a variable cross-section design of heat cracking trend, steps of different thickness changes are designed on the outer ring; in order to study a sheet design of a feeding distance, sheets with thicknesses and lengths changing within a certain range are designed; in order to study a bottom pouring type sheet design of a long-distance filling capacity, large-area annular sheets with different thicknesses and different lengths are designed on one side of the outer ring. According to the complicated thin-walled investment casting, comprehensive casting performances of a nickel-based high-temperature alloy, such as large-area thin-walled filling capacity, heat cracking trend, feeding distance and bottom pouring type filling capacity of the nickel-based alloy, are obtained at a time; and meanwhile, a casting experiment is completed once, thus the consistency of experiment conditions is ensured and the research and development time is shortened.

Description

technical field [0001] The invention relates to the field of nickel-based superalloys, in particular to a large complex thin-walled investment casting for nickel-based alloy casting performance evaluation, and the use of the large complex thin-walled investment casting for nickel-based superalloys Methods of casting performance evaluation. Background technique [0002] Due to its excellent comprehensive properties, nickel-based superalloys have been widely used in aviation, aerospace, energy and chemical industries after decades of development, and are one of the important symbols to measure the development level of a country's material science. Castings produced by mold precision casting technology have become an important method in the manufacturing technology of key parts of aircraft because of their good quality and accurate size. In recent years, with the advancement of science and technology and the requirements of energy-saving and environmental protection concepts, ...

Claims

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Application Information

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IPC IPC(8): B22C9/04B22C9/24B22D27/15
Inventor 高海燕康茂东王俊凌李石保孙宝德
Owner ZHONGCHAO HANGYU INVESTMENT CASTING S&T CO
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