Release agent used for precision casting of beryllium-aluminum alloy and preparation method of release agent

A technology of precision casting and beryllium aluminum alloy, which is used in casting and forming equipment, metal processing equipment, casting molds, etc., can solve the problems of inability to use beryllium aluminum alloy precision casting and high price, and achieve the advantages of rapid heat dissipation and cooling, low cost, and high cost. Quick and easy demoulding

Active Publication Date: 2018-12-18
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the price of beryllium metal is relatively high, and alloy precision casting requires the ingot to be easily released from the mold to ensure surface quality, so as to avoid materia...

Method used

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  • Release agent used for precision casting of beryllium-aluminum alloy and preparation method of release agent
  • Release agent used for precision casting of beryllium-aluminum alloy and preparation method of release agent

Examples

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Effect test

Embodiment 1

[0032] A beryllium-aluminum alloy precision casting release agent and a preparation method thereof are realized by the following steps:

[0033] (1) Raw material components and their parts by weight are: deionized water 75.0, sodium silicate 5.5, aluminum oxide 12.0, silicon oxide 2.0, sodium dihydrogen phosphate 0.8, sodium monohydrogen phosphate 0.4, calcium chloride 2.0, graphite oxide Alkene 1.0, sodium tetraborate 1.3. Among them, the particle size of alumina and silicon oxide powder is 400 mesh, and the average size of graphene oxide is 120 microns;

[0034] (2) The preparation method is:

[0035] (1) Put the prepared raw materials into a blast drying oven and dry them at 80 degrees Celsius for 8 hours;

[0036] (2) Add the raw materials into deionized water in the order of sodium silicate, sodium dihydrogen phosphate, sodium monohydrogen phosphate, calcium chloride, and sodium tetraborate, and use mechanical stirring to dissolve the raw materials at a speed of 300r / mi...

Embodiment 2

[0040] A beryllium-aluminum alloy precision casting release agent and a preparation method thereof are realized by the following steps:

[0041](1) Raw material components and parts by weight are: deionized water 80, sodium silicate 4.8, aluminum oxide 10, silicon oxide 2.5, sodium dihydrogen phosphate 1.0, sodium monohydrogen phosphate 0.5, calcium chloride 1.5, graphite oxide Alkene 0.8, sodium tetraborate 1.0. Among them, the particle size of alumina and silicon oxide powder is 200 mesh, and the average size of graphene oxide is 200 microns;

[0042] (2) The preparation method is:

[0043] (1) Put the prepared raw materials into a blast drying oven and dry them at 75 degrees Celsius for 6 hours;

[0044] (2) Add the raw materials into deionized water in the order of sodium silicate, sodium dihydrogen phosphate, sodium monohydrogen phosphate, calcium chloride, and sodium tetraborate, and use mechanical stirring to dissolve the raw materials at a speed of 480r / min for 30 mi...

Embodiment 3

[0048] A beryllium-aluminum alloy precision casting release agent and a preparation method thereof are realized by the following steps:

[0049] (1) Raw material components and their parts by weight are: deionized water 70, sodium silicate 6.0, aluminum oxide 13, silicon oxide 3.5, sodium dihydrogen phosphate 1.3, sodium monohydrogen phosphate 0.7, calcium chloride 2.5, graphite oxide Alkene 1.2, sodium tetraborate 1.8. Among them, the particle size of alumina and silicon oxide powder is 400 mesh, and the average size of graphene oxide is 150 microns;

[0050] (2) The preparation method is:

[0051] (1) Put the prepared raw materials into a blast drying oven and dry them at 85 degrees Celsius for 6 hours;

[0052] (2) Add the raw materials into deionized water in the order of sodium silicate, sodium dihydrogen phosphate, sodium monohydrogen phosphate, calcium chloride, and sodium tetraborate, and use mechanical stirring to dissolve the raw materials at a speed of 600r / min fo...

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Abstract

The invention discloses a release agent used for precision casting of a beryllium-aluminum alloy and a preparation method of the release agent. The release agent comprises, by weight, 70-80% of deionized water, 4.7-6.0% of sodium silicate, 10.0-13.0% of aluminum oxide, 2.0-3.5% of silicon oxide, 0.8-1.3% of sodium dihydrogen phosphate, 0.4-0.7% of disodium hydrogen phosphate, 1.5-2.5% of calcium chloride, 0.8-1.2% of graphene oxide and 1.0-1.8% of sodium tetraborate. The release agent has the advantages of simple ingredients and preparation, scientific component ratio and non-toxic harmless raw materials and can be stored for a long time for later use. The release agent can effectively achieve isolation between the beryllium-aluminum alloy and a die shell wall for protection, ensures fastand easy release from a die, does not affect the surface quality of an alloy part and a die shell and is conducive to repeated use of the die shell as well as the precision casting process of the beryllium-aluminum alloy, thereby greatly improving the working efficiency and reducing the alloy melting-casting cost.

Description

technical field [0001] The invention belongs to the field of metal material precision casting, and in particular relates to a mold spray protection and ingot surface quality control, in particular to a release agent for beryllium aluminum alloy precision casting and a preparation method thereof. Background technique [0002] Beryllium aluminum alloy combines the low density and high strength of metal beryllium with the high plasticity and excellent machinability of metal aluminum. It has good toughness and easy processing. It is a unique light weight, rigidity, high damping and high stable material. After more than 40 years of development, beryllium aluminum alloy has been widely used in aerospace, weapon system and automobile fields. [0003] At present, the production of beryllium aluminum alloy parts mainly adopts two methods: powder metallurgy and casting. The former can obtain alloy products with relatively good comprehensive properties, but its disadvantages are also ...

Claims

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Application Information

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IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 余良波
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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