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Preparation method of plate high-temperature alloy casting with high complexity

A complex and high-temperature alloy technology, which is applied in the field of high-temperature alloy casting and can solve problems such as the difficulty of castings

Inactive Publication Date: 2011-01-12
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will bring a certain degree of difficulty to the preparation of castings

Method used

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  • Preparation method of plate high-temperature alloy casting with high complexity
  • Preparation method of plate high-temperature alloy casting with high complexity
  • Preparation method of plate high-temperature alloy casting with high complexity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] First select a high-purity quartz tube with a diameter of 3 mm, place the quartz tube in a mold, and prepare a wax model with a length of 200 mm, a width of 100 mm, and a height of 5 mm. The wall thickness of the wax model is 1 mm. The distance between the outer walls of the tube is 1 mm. One end of the quartz tube is a fixed end, and the other end is a free end. Platinum wires are used for positioning. Coating the wax model, the specific coating process is as follows: use 320 mesh corundum powder for the surface coating, silica sol as the binder, the powder-liquid ratio is 2:1, the air temperature is 25°C, the relative humidity is 50%, the first layer The drying time after the surface coating is 4 hours, the second layer of surface coating is 320 mesh corundum paint, the sanding material is 80 mesh fused corundum, the drying time is 8 hours, and the third layer is 200 mesh corundum paint , the sanding material is 60 mesh fused corundum powder, the drying time is 8 hou...

Embodiment 2

[0020] First select a high-purity quartz tube with a diameter of 3 mm, place the quartz tube in a mold, and prepare a wax model with a length of 200 mm, a width of 100 mm, and a height of 5 mm. The wall thickness of the wax model is 1 mm. The distance between the outer walls of the tube is 1 mm. One end of the quartz tube is a fixed end, and the other end is a free end. Platinum wire is used for positioning. Coating the wax model, the specific coating process is as follows: the coating is made of 320 mesh corundum powder, the binder is silica sol, the powder-to-liquid ratio is 2:1, the air temperature is 25°C, and the relative humidity is 50%. The drying time after the surface coating is 4 hours, the second layer of paint is 320 mesh corundum paint, the sanding material is 80 mesh zircon powder, the drying time is 8 hours, the third layer is 200 mesh corundum paint, and the sanding material is 60 mesh zircon powder, drying time is 8 hours, the fourth to sixth layers of paint ...

Embodiment 3

[0022] First select a silica ceramic core with a core diameter of 3 mm and a length of 215 mm, place the core in a mold, and prepare a wax model with a length of 200 mm, a width of 100 mm, and a height of 5 mm. The wall thickness is 1 mm, the distance between the outer walls of the core is 1 mm, one end of the core is a fixed end, the length is 10 mm, the other end is a free end, and the length is 5 mm, the specific value of the gap between the free end in the radial and axial directions is: radial The diameter is 50 microns, the axial length is 2 mm, and the ceramic cores are positioned with tungsten-rhenium wires. After the wax model is prepared, the wax model is coated. The specific coating process is as follows: 320 mesh corundum powder is used for the surface coating, the binder is silica sol, the powder-liquid ratio is 2:1, the air temperature is 20 °C, and the relative humidity is 60%, the drying time of the first layer of surface coating is 4 hours, the second layer of...

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Abstract

The invention relates to a preparation method of a plate high-temperature alloy casting with high complexity, comprising the following steps of: firstly preparing a ceramic mould core, then putting into a mould for preparing a wax mould, locating the ceramic mould core, then assembling the wax mould, treating the wax mould via coating, dewaxing and roasting, then putting into a box, casting, finally removing the core for obtaining the casting; in order to meet the requirements of the high-temperature alloy casting which is complex in structure and light in weight of the parts, the invention provides a preparation method of the modern high-temperature alloy casting which is thin in wall and complex in internal hollow cavity structure, thereby filling the technical blank, and having excellent economical and social value.

Description

technical field [0001] The invention relates to high-temperature alloy casting technology, and in particular provides a preparation method of high-complexity flat-type high-temperature alloy castings. Background technique [0002] Cast superalloys are a very important category in the field of superalloys. Due to the deepening of the research on the microstructure and properties of cast alloys and the promotion of various advanced melting and casting technologies, the performance of cast superalloys has been continuously improved, and the types and application ranges have been continuously expanded. , will occupy a dominant position at present and for a long period of time in the future. The high performance of modern aviation and aerospace engines puts forward new requirements for high-temperature alloy castings. Especially in order to meet the needs of modern ultra-high-performance engines, the structure of high-temperature alloy castings is becoming increasingly complex an...

Claims

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Application Information

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IPC IPC(8): B22C9/04
Inventor 姜卫国胡壮麒楼琅洪
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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