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A mosaic chassis for directionally solidified blade wax mold combination and its preparation method

A directional solidification, inlay technology, applied in the field of investment casting, can solve the problems of breakout, a large number of production sites, and environmental pollution.

Active Publication Date: 2016-06-29
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of operation will bring a large amount of dust to the production site, thereby causing environmental pollution on site. If the bottom of the shell is not ground properly, the small shell will be damaged, and the shell will often be damaged when pouring. In addition, the directional solidification blade The manufacturing cost is expensive, and any problem with a small detail will bring large economic losses, so it is necessary to make creative technical improvements to the chassis of the existing directional solidification blade wax model combination

Method used

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  • A mosaic chassis for directionally solidified blade wax mold combination and its preparation method
  • A mosaic chassis for directionally solidified blade wax mold combination and its preparation method
  • A mosaic chassis for directionally solidified blade wax mold combination and its preparation method

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Embodiment 1

[0034] A mosaic chassis for directional solidification blade wax mold combination, such as Figure 1-11 shown, for a diameter A cylinder with a height of 8 mm to 15 mm, which is composed of a non-metallic disc 1 and a metal disc 2 with the same diameter;

[0035] Wherein, the non-metallic disc 1 is the diameter A cylinder with a height of 0.5 mm to 3 mm; the upper surface of a non-metallic disc is flat, and the lower surface is close to the edge of 15 mm to 25 mm, and 6 to 36 diameters are evenly distributed along the radial direction of the disc. A cylindrical protrusion 3 with a height of 4 mm to 6 mm is provided in the center of the non-metallic disc 1 with a diameter of The central through hole 4 of the cylinder is rounded at R0.5-R1 at the joint between the cylindrical protrusion 3 and the lower surface of the non-metal disc;

[0036] The metal disc 2 is a cylinder with the same diameter as the non-metal disc 1 and a height of 6.5 mm to 12 mm; the upper surface of ...

Embodiment 2

[0042] The preparation method of the mosaic chassis for the directional solidification blade wax mold combination of embodiment 1 is:

[0043] 1. Place the precision-machined metal disc 1 made of forged aluminum LD8 in the wax injection mold, and preheat the mold to 25°C to 35°C. The inner wall of the wax injection mold is diameter High 8mm ~ 15mm;

[0044] 2. Put the filling wax F28-44B into the wax storage tank of the MPI wax press machine and heat it to 75 ° C ~ 85 ° C, stir evenly, and set the process parameters of the MPI wax press machine to press the wax mold: the clamping pressure is 4MPa ~5MPa, template preheating temperature is 31℃~34℃, wax injection temperature is 68℃~80℃, injection pressure is 0.6MPa~2.0MPa, holding time is 50s~100s;

[0045] 3. Use a gauze or brush to soak in an appropriate amount of methyl silicone oil release agent, and evenly rub it on the inner surface of the wax injection mold. Do not brush the methyl silicone oil on the outer surface of th...

Embodiment 3

[0047] 1. The diameter of the cast magnesium alloy ZM5 after precision machining A metal disc with a height of 12mm is placed in the wax injection mold, and the mold is preheated to 25°C to 28°C. The inner wall of the wax injection mold is the diameter 15mm high;

[0048] 2. Put the filling wax F102 rosin powder mold material into the wax storage tank of the MPI wax press machine and heat it to 75 ° C ~ 80 ° C, stir evenly, and set the process parameters of the MPI wax press machine to press the wax mold as: mold clamping pressure 5MPa, template preheating temperature 31℃~32℃, wax injection temperature 68℃~75℃, injection pressure 1.5MPa~2.0MPa, holding time 50s;

[0049] 3. Dip a proper amount of methyl silicone oil type agent with gauze or a brush, and evenly rub it on the inner surface of the wax injection mold. Do not brush the methyl silicone oil type on the outer surface of the metal disc and the inner surface of the evenly distributed through holes. The wax injection...

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Abstract

The invention provides an inlaid base disc for a directionally freezing blade wax mold combination and a preparing method thereof to overcome the insufficiency of the preparing technology of the conventional base disc for the directionally freezing blade wax mold combination. The base disc consists of a nonmetal disc and a metal disc of which the diameters are the same, wherein 6 to 36 cylindrical protrusions are uniformly distributed on the lower surface of the nonmetal disc, and a through hole is formed in the center of the nonmetal disc; the metal disc is a cylinder of which the diameter is the same as that of the nonmetal disc, 6 to 36 petaloid grooves, circular rings and reinforcing ribs are formed in or arranged on the lower surface, a thread which penetrates through the metal disc is formed in the center, and a plurality of through holes are also formed in the metal disc. Moreover, the invention further provides the preparing method of the base disc. The base disc for the directionally freezing the blade wax mold combination has the advantages of little deformation, fast dewaxing, environmental protection and lean production. Besides, for a mold casing prepared by the base disc, the bottom part of the mold casing does not need to be ground levelly before the mold casing is put into a furnace to be casted, the operation efficiency can be greatly improved, the environment can be protected, at the same time, the mold casing is not expanded, the steel leakage is not easy to occur, and the casting pass rate of castings can be increased.

Description

technical field [0001] The invention belongs to the field of investment casting, and in particular relates to a metal and non-metal inlaid chassis for directional solidification blade wax mold combination and a preparation method thereof. Background technique [0002] In order to meet the development needs of aero-vehicles, it is necessary to continuously increase the thrust-to-weight ratio of aero-engines. The current solution is to increase the gas temperature in front of the aeroengine turbine and improve the cooling structure of the blades. The manufacture of blades has developed from the initial equiaxed polycrystalline blades to directionally solidified columnar crystal blades and single crystal blades with complex air-cooling channels. As we all know, the directionally solidified blades in my country are generally prepared by the HRS method at this stage. After being heated to a certain temperature in the heater, pouring is carried out. After standing still for a per...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/04B22C7/02
CPCB22C7/02B22C9/04
Inventor 孙长波尚伟周君华邹建波史凤岭
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION