Processing methods of High temperature alloy GH4169 special-shaped hole and hole edge fillet

A GH4169, superalloy technology, applied in the field of mechanical processing, can solve the problems of thin wall, poor rigidity, difficult cutting and processing, etc., and achieve the effect of broad application prospects

Inactive Publication Date: 2015-03-04
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The turbine rotor part is one of the important core hot-end parts of the aero-engine. The material of the turbine part must have high yield strength, tensile strength and good thermal stability, which can meet the requirements of reliable work at high temperature. With the engine thrust-to-weight ratio With the improvement of high-temperature alloy GH4169, more and more materials are used. On the one hand, it brings great difficulties to cutting. Whether it is turning, milling, broaching, or drilling, the general processing efficiency is low and the processing quality

Method used

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  • Processing methods of High temperature alloy GH4169 special-shaped hole and hole edge fillet
  • Processing methods of High temperature alloy GH4169 special-shaped hole and hole edge fillet
  • Processing methods of High temperature alloy GH4169 special-shaped hole and hole edge fillet

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Effect test

Embodiment 1

[0023] Due to the high broaching force in the broaching process of high-temperature alloy GH4169 disc ring parts, the traditional broaching method can no longer meet the actual processing needs, so a milling process was selected to effectively reduce the deformation during processing , to meet processing needs.

[0024] The processing method of the superalloy GH4169 special-shaped hole, the maximum outer dimension of the processed and formed special-shaped hole is (1mm-3.5 mm)×(2mm-8mm), and the processing steps are as follows:

[0025] ① Drilling and drilling the bottom hole: first use the center drill to do the spot, and then choose to use the Ф3 drill bit to drill the bottom hole to remove most of the margin;

[0026] ② Rough milling: use Ф3 milling cutter for rough milling, and move the tool along the contour of the special-shaped hole through the tool center programming, use the three-coordinate machining center, the speed (350r-450r) / min, the feed rate 0.1mm; remove the ...

Embodiment 2

[0036] The processing method of the superalloy GH4169 special-shaped hole, the maximum outer dimension of the processed special-shaped hole is 3.5 mm × 5mm, and the processing steps are as follows:

[0037] ① Drilling and drilling the bottom hole: first use the center drill to do the spot, and then choose to use the Ф3 drill bit to drill the bottom hole to remove most of the margin;

[0038] ② Rough milling: use Ф3 milling cutter for rough milling, and move the tool along the contour of the special-shaped hole through the tool center programming, using a three-coordinate machining center with a speed of 400r / min and a feed rate of 0.1mm; remove the allowance and guarantee it for the next step A uniform margin of 0.2mm is reserved for fine milling;

[0039] ③Finish milling: use Ф3 milling cutter for fine milling, and use the three-coordinate machining center to move along the contour of the special-shaped hole through contour programming, with a speed of 500r / min, and mill to m...

Embodiment 3

[0047]The processing method of the superalloy GH4169 special-shaped hole, the maximum outer dimension of the processed and formed special-shaped hole is 1mm×2mm, and the processing steps are as follows:

[0048] ① Drilling and drilling the bottom hole: first use the center drill to do the spot, and then choose to use the Ф3 drill bit to drill the bottom hole to remove most of the margin;

[0049] ② Rough milling: use Ф3 milling cutter for rough milling, and use tool center programming to move along the contour of the special-shaped hole, using a three-coordinate machining center with a speed of 450r / min and a feed rate of 0.1mm; remove the allowance and ensure that it is the next step A uniform margin of 0.2mm is reserved for fine milling;

[0050] ③Finish milling: use the Ф3 milling cutter for fine milling, move the tool along the contour of the special-shaped hole through contour programming, use a three-coordinate machining center with a speed of 450r / min, and mill to meet ...

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Abstract

The invention relates to processing methods of a high temperature alloy GH4169 special-shaped hole and a hole edge fillet. The molded special-shaped hole has the biggest outline size of (1mm-3.5mm)* (2mm-8mm); the processing method of the special-shaped hole comprises the following steps: (1) dotting and drilling a bottom hole, namely, firstly dotting by a center drill, then selecting a phi 3 drill bit to drill the bottom hole, and removing most of the margin; (2) rough milling, namely, carrying out rough milling by a phi 3 milling cutter. After the processing methods of the high temperature alloy GH4169 special-shaped hole and the hole edge fillet are adopted, the problems that the small-sized special-shaped holes and the hole edge fillets of high temperature alloy GH4169 material disc ring parts are low in processing efficiency and instable in processing quality, the milling cutter is short in service life, the cutting edge of the milling cutter is easily broken, and the like can be solved. The processing methods of the high temperature alloy GH4169 special-shaped hole and the hole edge fillet can be popularized and used in similar parts, and have wide application prospect in manufacture of an aero-engine and a ground turbine combustion engine.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, and in particular provides a processing method for a superalloy GH4169 special-shaped hole and hole edge rounding. Background technique [0002] The turbine rotor part is one of the important core hot-end parts of the aero-engine. The material of the turbine part must have high yield strength, tensile strength and good thermal stability, which can meet the requirements of reliable work at high temperature. With the engine thrust-to-weight ratio With the improvement of high-temperature alloy GH4169, more and more materials are used. On the one hand, it brings great difficulties to cutting processing. Whether it is turning, milling, broaching, or drilling, the processing efficiency is generally low and the processing quality is unstable. On the other hand, the prominent features of the part structure are complex shape, thin wall, poor rigidity, and easy deformation during processing. ...

Claims

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Application Information

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IPC IPC(8): B23P13/02
CPCB23P13/02
Inventor 郭艳华张印周瑜罗恒雨
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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