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Anti-rust coating for precision castings

An anti-rust coating and precision casting technology, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of loss of angular structure of castings, affecting the accuracy of casting surface dimensions, increasing workload, etc., to achieve Effects of prolonging service life, strong rust resistance, and improving lubricity

Inactive Publication Date: 2018-11-13
ANHUI SOLID FOUNDRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since precision castings do not need to be finished, special attention should be paid to their rust prevention to prevent castings from rusting and need to be derusted, because the derusting process not only increases the workload, but also easily causes rust during the derusting process. The loss of the angular structure of the casting, which affects the surface dimensional accuracy of the casting

Method used

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Examples

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Effect test

Embodiment 1

[0021] An antirust coating for precision castings, made of the following raw materials in parts by weight: 30 parts of phenolic resin, 8 parts of polyurethane emulsion, 5 parts of modified ceramic rubber powder, 3 parts of palm wax, 3 parts of titanium dioxide, 5 parts of methyl cellulose, 2 parts of ethyl acetate, 0.8 parts of calcium fluoride phosphate, 1 part of coupling agent, 0.5 parts of leveling agent.

[0022] The coupling agent is selected from a silane coupling agent or a titanate coupling agent.

[0023] The modified ceramic rubber powder is prepared by modifying ceramic fiber, silicone resin, and polyacrylamide emulsion. The modification method is: add silicone resin to the ceramic fiber, mix well and use frequency 2250MHz, power 800W Microwave reflux treatment for 10 minutes, then add polyacrylamide emulsion, mix evenly and continue microwave reflux treatment for 5 minutes, and transfer to 5°C environment to seal and stand for 30 minutes, stir with a mixer at a sp...

Embodiment 2

[0031] A kind of antirust paint for investment castings, made of the following raw materials in parts by weight:

[0032] 45 parts of phenolic resin, 12 parts of polyurethane emulsion, 8 parts of modified ceramic rubber powder, 5 parts of palm wax, 4 parts of titanium dioxide, 7 parts of methyl cellulose, 3 parts of ethyl acetate, 1.5 parts of calcium fluorophosphate, coupling agent 1.3 parts, 0.8 parts of leveling agent.

[0033] The coupling agent is selected from a silane coupling agent or a titanate coupling agent.

[0034] The modified ceramic rubber powder is prepared by modifying ceramic fiber, silicone resin, and polyacrylamide emulsion. The modification method is: add silicone resin to the ceramic fiber, mix well and use frequency 2250MHz, power 800W Microwave reflux treatment for 15 minutes, then add polyacrylamide emulsion, mix evenly and continue microwave reflux treatment for 10 minutes, and transfer to 10°C environment to seal and stand for 30 minutes, stir with...

Embodiment 3

[0042] An antirust coating for precision castings, made of the following raw materials in parts by weight: 60 parts of phenolic resin, 15 parts of polyurethane emulsion, 10 parts of modified ceramic rubber powder, 6 parts of palm wax, 5 parts of titanium dioxide, 8 parts of methyl cellulose, 5 parts of ethyl acetate, 2 parts of calcium fluoride phosphate, 1.5 parts of coupling agent, 1 part of leveling agent.

[0043] The coupling agent is selected from a silane coupling agent or a titanate coupling agent.

[0044] The modified ceramic rubber powder is prepared by modifying ceramic fiber, silicone resin, and polyacrylamide emulsion. The modification method is: add silicone resin to the ceramic fiber, mix well and use frequency 2250MHz, power 800W Microwave reflux treatment for 20 minutes, then add polyacrylamide emulsion, mix evenly and continue microwave reflux treatment for 10 minutes, and transfer to 10°C environment to seal and stand for 30 minutes, stir with a mixer at a ...

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Abstract

The invention discloses an anti-rust coating for precision castings, and relates to the technical field of casting manufacturing. Phenolic resin is taken as a main raw material, and various additivesare added to prepare the composite coating. The coating can form a dense and hard coating layer on the surface of a metal casting, has stronger rust resistance, corrosion resistance and oxidation resistance, and can effectively prolong the service life of metal valves and expand the application range of metal castings.

Description

Technical field: [0001] The invention relates to the technical field of foundry industry, in particular to an antirust coating for precision castings. Background technique: [0002] Precision casting is a special casting, and the parts obtained by this method generally do not need to be finished. Precision casting has the characteristics of high precision, casting complex castings, unlimited alloy materials and high flexibility, which can be used for mass production, small batch or even single piece production. [0003] Since precision castings do not need to be finished, special attention should be paid to their rust prevention to prevent castings from rusting and need to be derusted, because the derusting process not only increases the workload, but also easily causes rust during the derusting process. The loss of the angular structure of the casting, which affects the surface dimensional accuracy of the casting. In order to solve this problem, people began to apply anti...

Claims

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Application Information

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IPC IPC(8): C09D161/06C09D175/04C09D5/08C09D7/61C09D7/62
CPCC08K2003/2241C08L2201/08C09D5/08C09D7/61C09D7/62C09D7/70C09D161/06C08L75/04C08K9/10C08K7/04C08K3/22
Inventor 何祥炎孙国政周万波
Owner ANHUI SOLID FOUNDRY CO LTD
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