Nano titanium dioxide improved pasty demolding agent for valve casting

A technology of nano-titanium dioxide and mold release agent, which is used in casting molding equipment, molds, mold components, etc., can solve the problems of affecting the quality of valve body blanks, increase production input costs, and short service life, and achieve good mold release effect. , long service life, easy to use effect

Inactive Publication Date: 2015-10-07
HEXIAN KEJIA VALVE CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The valve body release agent currently used has the characteristics of poor release effect and short service life, which will not only affect the quality of the valve body blank, but also increase the production input cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A nano-titanium dioxide modified paste release agent for valve body casting, made of the following raw materials in parts by mass:

[0022] 70kg of methyl silicone oil, 15kg of nano-titanium dioxide, 12kg of talc, 10kg of diatomaceous earth, 8kg of fumed silica, 6kg of abietic acid, 5kg of petrolatum, 4kg of alkyl naphthalene sulfonate, 3kg of lard, 2kg of concentrated nitric acid, methyl ethyl Base ketone 10kg, ethanol 20kg, water 50kg;

[0023] Its preparation method is as follows:

[0024] (1) Disperse nano-titanium dioxide in ethanol, soak for 1h, then add methyl silicone oil dissolved in methyl ethyl ketone, mix well, then add concentrated nitric acid, heat up to 50-60°C for 30min, and then Ultrasonic at 22kHz, power 50W for 20min, to obtain modified methyl silicone oil;

[0025] (2) Dry diatomaceous earth at 70-80°C for 8 hours, then calcined at 400-500°C for 3 hours, then add it to a ball mill, and after ball milling for 15 minutes, add talcum powder, fumed sil...

Embodiment 2

[0030] A nano-titanium dioxide modified paste release agent for valve body casting, made of the following raw materials in parts by mass:

[0031] 75kg of methyl silicone oil, 18kg of nano-titanium dioxide, 13kg of talc, 11kg of diatomaceous earth, 9kg of fumed silica, 7kg of abietic acid, 6kg of petrolatum, 5kg of alkyl naphthalene sulfonate, 4kg of lard, 3kg of concentrated nitric acid, methyl ethyl Base ketone 11kg, ethanol 25kg, water 55kg.

[0032] The preparation method of the release agent of this embodiment is the same as that of Example 1.

Embodiment 3

[0034] A nano-titanium dioxide modified paste release agent for valve body casting, made of the following raw materials in parts by mass:

[0035] 80kg of methyl silicone oil, 20kg of nano-titanium dioxide, 15kg of talc, 13kg of diatomaceous earth, 10kg of fumed silica, 9kg of abietic acid, 8kg of petrolatum, 6kg of alkyl naphthalene sulfonate, 5kg of lard, 4kg of concentrated nitric acid, methyl ethyl Base ketone 12kg, ethanol 30kg, water 60kg.

[0036] The preparation method of the release agent of this embodiment is the same as that of Example 1.

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Abstract

The invention discloses a nano titanium dioxide improved pasty demolding agent for valve casting and relates to the technical field of demolding agent production. The nano titanium dioxide improved pasty demolding agent is prepared by, by mass, 70-80 parts of methyl silicone oil, 15-20 parts of nano titanium dioxide, 12-15 parts of talcum powder, 10-13 parts of diatomite, 8-10 parts of gas-phase silica, 6-9 parts of abietic acid, 5-8 parts of vaseline, 4-6 parts of alkyl naphthalene sulfonate, 3-5 parts of lard, 2-4 parts of concentrated nitric acid, 10-12 parts of methyl ethyl ketone, 20-30 parts of alcohol and 50-60 parts of water. The nano titanium dioxide improved pasty demolding agent is good in demolding effect, demolding can be realized after a valve is fulled cooled and shaped without having influence on size accuracy and surface quality of the valve, and the nano titanium dioxide improved pasty demolding agent is long in service life.

Description

Technical field: [0001] The invention relates to the technical field of release agent production, in particular to a nano-titanium dioxide modified paste release agent for valve body casting. Background technique: [0002] The valve body is a major part of the valve. There are different mechanical manufacturing methods according to the pressure level, such as casting and forging. Generally, the valve body of the medium and low pressure specifications is usually produced by the casting process. Casting is one of the basic processes of the modern device manufacturing industry. It is a process in which metals are melted into liquids that meet certain requirements and poured into molds, cooled and solidified, and cleaned to obtain castings with predetermined shapes, sizes and properties. Because the casting blank is almost shaped, it achieves the purpose of free machining or a small amount of machining, which reduces the cost and reduces the production time to a certain extent. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
Inventor 黎宏
Owner HEXIAN KEJIA VALVE CASTING
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