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Seed cutting device and method for casting single crystal superalloys with different crystal orientations

A technology of crystal orientation and seed crystal, applied in the field of mechanical processing, can solve the problems such as the inability to realize the cutting method of seed crystal with different crystal orientation, the low cost rate of seed crystal preparation, and the complexity of seed crystal preparation.

Active Publication Date: 2022-07-12
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a seed crystal cutting device and method for casting single crystal superalloys with different crystal orientations. Crystal orientation seed crystal cutting method, and the technical problem of low cost rate of seed crystal preparation

Method used

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  • Seed cutting device and method for casting single crystal superalloys with different crystal orientations
  • Seed cutting device and method for casting single crystal superalloys with different crystal orientations
  • Seed cutting device and method for casting single crystal superalloys with different crystal orientations

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Embodiment 1

[0043] like figure 2 As shown, a seed crystal cutting device for casting single crystal superalloys with different crystal orientations consists of a bottom device 3 that controls and corrects the Gamma angle of the primary dendrite direction, and controls to correct the Delta angle of the primary dendrite direction and the Alpha angle of the secondary dendrite direction. The top device 4, the cutting machine 1 and the single crystal test rod 5 of the corner and the Beta angle are composed of; The combination is fixed, and the bottom device 3 and the top device 4 are located on the shelf 2 of the cutting machine 1;

[0044] like image 3 As shown, the bottom device 3 includes a base 9 provided with three parallel slots I10, a fixed support plate 6 with three horizontal parallel slots II 11 above the base 9, and the angle of the Gamma angle in the primary dendrite direction is controlled to be corrected. The indexing plate 7 and the positioning bolts I 8 and II 12 connecting...

Embodiment 2

[0050] see figure 1 , a cutting method for a seed crystal cutting device for casting single crystal superalloys with different crystal orientations comprises the following steps:

[0051] The first step is to measure the primary dendrite angle and secondary dendrite angle of the initial single crystal superalloy test bar used for seed crystal cutting by X-ray diffractometer, and obtain the corresponding primary dendrite direction Gamma angle and Delta angle, Alpha angle and Beta angle of secondary dendrite direction.

[0052] In the second step, the single crystal test rod 5 for seed crystal cutting is placed in the sample holder 15 of the top device 4 and clamped and fixed with bolts. The direction of the surface axis of the single crystal test rod 5 is recorded as the reference direction. Since the primary dendrite direction of the single crystal test rod is parallel to the crystallographic [001] direction, the crystal orientation can be determined according to the dendrite...

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Abstract

The invention discloses a seed crystal cutting device and a method for casting single crystal superalloys with different crystal orientations, belonging to the technical field of mechanical processing. The seed crystal cutting device consists of two parts: the bottom device that controls and corrects the Gamma angle of the primary dendrite direction and the top device that controls and corrects the Delta angle of the primary dendrite direction, the Alpha angle and the Beta angle of the secondary dendrite direction. X-ray diffractometer was used to measure the angles of the primary dendrite and the secondary dendrite, and the middle angle index of the top device was rotated to determine the corresponding angle for direction correction, and the angle index of the bottom device was rotated to the corresponding angle for direction correction; single crystals were obtained. After the direction of the test bar is accurately corrected, the seed crystal block is cut by the cutting machine, and the obtained seed crystal block is the seed crystal with the [001], [011] or [111] orientation. The seed crystal cutting device can easily and quickly cut single crystal sample seed crystals with different crystal orientations, and improves the yield of seed crystal cutting.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a seed crystal cutting device and method for casting single crystal superalloys with different crystal orientations. Background technique [0002] Single crystal casting superalloys have excellent properties such as high temperature resistance, excellent fatigue resistance, and good mechanical properties, and are often widely used as turbine blade materials. Single crystal casting superalloys have obvious anisotropy, and the properties of single crystal superalloys with different crystal orientations are different. The research shows that the creep strength of CMSX-4 alloy is [111]>[001]>[011] from high to low at 950℃; The lifetime is significantly higher than that of the [001] and [011] orientations; the corrosion resistance of DD6 single crystal superalloy in 3.5wt.%NaCl solution is the best in the [001] orientation, followed by (111) and (011)....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28D5/00B28D7/04B28D7/00
CPCB28D5/00B28D5/0082B28D5/0058
Inventor 王富段倩杨强朱鑫涛曲凌峰王迎鑫
Owner XI AN JIAOTONG UNIV
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