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Alloy fused mold precision casting model material and preparation method and application thereof

An investment precision casting and model material technology, applied in the field of alloy investment casting model materials, can solve the problems of affecting product delivery, excessive model shrinkage, insufficient stability, etc., to achieve enhanced mechanical properties, high surface finish, and difficult deformation effect

Inactive Publication Date: 2019-12-20
QINGDAO RUNQIAN HI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the mold material for investment casting is generally made of wax, natural resin (rosin, etc.) and plastic (synthetic resin), etc., and its comprehensive performance can meet the requirements of general metal investment precision casting. The inventor further researched and found that: this type of existing mold material is not only insufficient in stability, but also cannot meet the increasing requirements of aerospace products in terms of quantity, quality, timeliness, etc.; As a result, the model itself is prone to fatal problems such as excessive shrinkage, air bubbles, surface ripples, and streamlines that affect the quality of precision castings, directly affecting product delivery and causing excessive cost increases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing a titanium alloy investment casting model material for an aero-engine, the steps of which are:

[0033] 1. Selection of raw materials: 45 parts of granular white solid semi-refined paraffin wax, 15 parts of super-grade rosin, 5 parts of linear low-density polyethylene, and a wax material configuration barrel of Φ300×h500.

[0034] 2. Configuration sequence:

[0035] (1) When the configuration barrel is preheated to 40°C, add the paraffin to melt the paraffin;

[0036] (2) When continuing to heat to 70°C, add the super-grade rosin and stir for 10 minutes to fully dissolve the super-grade rosin and paraffin;

[0037] (3) Add polyethylene when heating to 130°C, then stop heating after heating to 160°C, and stir for 30 minutes to make linear low-density polyethylene fully compatible with natural resin and wax; let stand and cool to room temperature to obtain .

Embodiment 2

[0039] A method for preparing a titanium alloy investment casting model material for an aero-engine, the steps of which are:

[0040] 1. Selection of raw materials: 65 parts of granular white solid semi-refined paraffin wax, 30 parts of super-grade rosin, 2 parts of linear low-density polyethylene, and a wax material configuration barrel of Φ300×h500.

[0041] 2. Configuration sequence:

[0042] (1) Add the paraffin when the configuration barrel is preheated to 45°C to melt the paraffin;

[0043] (2) When continuing to heat to 70°C, add the super-grade rosin and stir for 10 minutes to fully dissolve the super-grade rosin and paraffin;

[0044] (3) Add polyethylene when heating to 135°C, then stop heating after heating to 170°C, and stir for 40 minutes to make linear low-density polyethylene fully compatible with natural resin and wax; let stand and cool to room temperature to obtain .

Embodiment 3

[0046] A method for preparing a titanium alloy investment casting model material for an aero-engine, the steps of which are:

[0047]1. Selection of raw materials: 48 parts of granular white solid semi-refined paraffin wax, 24 parts of super-grade rosin, 5 parts of linear low-density polyethylene, and a wax material configuration barrel of Φ300×h500.

[0048] 2. Configuration sequence:

[0049] (1) When the configuration barrel is preheated to 40°C, add the paraffin to melt the paraffin;

[0050] (2) When continuing to heat to 75°C, add the super-grade rosin and stir for 5 minutes, so that the super-grade rosin and paraffin are fully compatible;

[0051] (3) Add polyethylene when heating to 130°C, then stop heating after heating to 160°C, and stir for 30 minutes to make linear low density polyethylene fully compatible with natural resin and wax; then continue heating to 180°C and keep warm for 2 minutes Then stop heating, let stand, cool to room temperature, that is.

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Abstract

The invention relates to the technical field of alloy fused mold casting model materials, and in particular, relates to an alloy fused mold precision casting model material and a preparation method and an application thereof. The model material comprises the raw materials in parts by weight: 45 to 65 parts of a wax material, 15 to 30 parts of natural resin and 2 to 8 parts of linear low-density polyethylene. The preparation method comprises the steps: 1) preheating a mixing container to not lower than 40 DEG C, adding the wax material, and stirring to melt the wax material; 2) continuously heating to the temperature not lower than 70 DEG C, adding natural resin, stirring, and making the natural resin and the wax material fully dissolved; and (3) continuously heating to be not lower than 130 DEG C and not higher than 180 DEG C, adding polyethylene, stirring, and making the linear low-density polyethylene fully dissolved with the natural resin and the wax material; and finally, standingand cooling to room temperature. The model material not only can meet the requirements of fused mold precision casting of important titanium alloy parts for aerospace and improve the yield, but also can effectively improve the surface quality of products.

Description

technical field [0001] The invention relates to the technical field of alloy investment precision casting model materials, in particular to a titanium alloy investment precision casting model material for aero-engines and a preparation method thereof. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] Titanium alloy investment casting technology, with its low cost and high efficiency, is widely used in aviation and aerospace fields. With the rapid development of national defense construction in our country, it is of great significance and imminent to improve the technical level of each link of this technology. Titanium alloy investment casting must use special...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/06C08L93/04C08L23/08C08K3/26C08K3/36B22C7/02
CPCB22C7/02C08K2003/265C08L91/06C08L2205/03C08L93/04C08L23/0815C08K3/26C08K3/36
Inventor 解宏伟
Owner QINGDAO RUNQIAN HI TECH CO LTD
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