CN104959530A - Nano titanium dioxide improved pasty demolding agent for valve casting - Google Patents
Nano titanium dioxide improved pasty demolding agent for valve casting Download PDFInfo
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- CN104959530A CN104959530A CN201510342027.3A CN201510342027A CN104959530A CN 104959530 A CN104959530 A CN 104959530A CN 201510342027 A CN201510342027 A CN 201510342027A CN 104959530 A CN104959530 A CN 104959530A
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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:
The present invention relates to releasing agent production technical field, be specifically related to the nano-titanium dioxide modified type paste releasing agent of a kind of valve body casting.
Background technology:
Valve body is a main parts size in valve, has different mechanical manufacturing method according to pressure rating, and as casting and forging etc., the valve body of general mesolow specification adopts casting technique to produce usually.Casting is one of fundamental technology of modem devices process industry, is to become meet necessarily required liquid and water in casting mold by metal melting, through cooled and solidified, level process after obtain the technical process of predetermined shape, size and performance foundry goods.Cast blank is shaped because being close to, and reaches the object exempting from machining or a small amount of processing, reduces cost, and less to a certain extent Production Time.And to cast the demoulding be a step important in casting technique, be directly connected to the quality of casting.Releasing agent be a kind of be used in two each other easily with the interface coating of the body surface of adhesion, it can make body surface be easy to depart from, smooth and clean.Therefore, releasing agent is directly connected to the quality of castability.There is stripping result difference in the valve body releasing agent of current use, the feature that service life is short not only can affect the quality of valve body blank, and can increase Productive statistics cost.
Summary of the invention:
Technical problem to be solved by this invention is to provide the valve body casting that a kind of production cost is low, stripping result is good nano-titanium dioxide modified type paste releasing agent.
Technical problem to be solved by this invention adopts following technical scheme to realize:
The nano-titanium dioxide modified type paste releasing agent of a kind of valve body casting, be made up of the raw material of following mass fraction:
Methyl-silicone oil 70-80 part, nano titanium oxide 15-20 part, talcum powder 12-15 part, diatomite 10-13 part, aerosil 8-10 part, rosin acid 6-9 part, vaseline 5-8 part, alkylnaphthalene sulfonate 4-6 part, lard 3-5 part, red fuming nitric acid (RFNA) 2-4 part, methyl ethyl ketone 10-12 part, ethanol 20-30 part, water 50-60 part;
Its preparation method is as follows:
(1) first nano titanium oxide is scattered in ethanol, soak 1-2h, then the methyl-silicone oil being dissolved in methyl ethyl ketone is added, red fuming nitric acid (RFNA) is added again after mixing, be warming up to 50-60 DEG C of insulation 20-30min, ultrasonic 15-20min under supersonic frequency 22kHz, power 50W, obtains modified methyl silicone oil again;
(2) by diatomite dry 8-10h at 70-80 DEG C, then calcine 2-3h at 400-500 DEG C, then add in ball mill, after ball milling 10-15min, add talcum powder, aerosil, vaseline and water, continue ball milling 20-30min, obtain material I;
(3) first material I is joined in high-speed mixer, add rosin acid, alkylnaphthalene sulfonate and lard again, be warming up to 40-50 DEG C after mixing 5-10min, after lard melts completely, add material I and modified methyl silicone oil, continue mixing 10-15min, obtain material II;
(4) add in vacuum concentration pot by material II, material being concentrated into solvent is 15-20%, is down to discharging after room temperature, finally carries out metering packing until temperature of charge.
The particle diameter of described nano titanium oxide is 30-50 nanometer, and needs vacuum drying 3-5h at 40-50 DEG C before using.
The heating-up temperature of described vacuum concentration pot is 50-60 DEG C.
The invention has the beneficial effects as follows:
(1) made releasing agent is paste, is convenient to packaging and transport, and easy to use, directly paste releasing agent is coated on die surface, solidifies completely after 15-20min, can carry out the casting of valve body;
(2) releasing agent has high temperature resistant and wear-resisting characteristic in the coating that die surface is formed, and is applicable to the casting of valve body;
(3) stripping result is good, after the abundant cooling and shaping of valve body, get final product the demoulding, can not affect dimensional accuracy and the surface quality of valve body;
(4) long service life, disposable be coated on die surface after can carry out thousands of time smooth demouldings.
Detailed description of the invention:
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.
Embodiment 1
The nano-titanium dioxide modified type paste releasing agent of a kind of valve body casting, be made up of the raw material of following mass fraction:
Methyl-silicone oil 70kg, nano titanium oxide 15kg, talcum powder 12kg, diatomite 10kg, aerosil 8kg, rosin acid 6kg, vaseline 5kg, alkylnaphthalene sulfonate 4kg, lard 3kg, red fuming nitric acid (RFNA) 2kg, methyl ethyl ketone 10kg, ethanol 20kg, water 50kg;
Its preparation method is as follows:
(1) first nano titanium oxide is scattered in ethanol, soak 1h, then the methyl-silicone oil being dissolved in methyl ethyl ketone is added, red fuming nitric acid (RFNA) is added again after mixing, be warming up to 50-60 DEG C of insulation 30min, ultrasonic 20min under supersonic frequency 22kHz, power 50W, obtains modified methyl silicone oil again;
(2) by diatomite dry 8h at 70-80 DEG C, then calcine 3h at 400-500 DEG C, then add in ball mill, after ball milling 15min, add talcum powder, aerosil, vaseline and water, continue ball milling 30min, obtain material I;
(3) first material I is joined in high-speed mixer, add rosin acid, alkylnaphthalene sulfonate and lard again, be warming up to 40-50 DEG C after mixing 5min, after lard melts completely, add material I and modified methyl silicone oil, continue mixing 15min, obtain material II;
(4) add in vacuum concentration pot by material II, arranging heating-up temperature is 50-60 DEG C, and material being concentrated into solvent is 15-20%, is down to discharging after room temperature, finally carries out metering packing until temperature of charge.
Wherein, the particle diameter of nano titanium oxide is 30-50 nanometer, and needs vacuum drying 5h at 40-50 DEG C before using.
Embodiment 2
The nano-titanium dioxide modified type paste releasing agent of a kind of valve body casting, be made up of the raw material of following mass fraction:
Methyl-silicone oil 75kg, nano titanium oxide 18kg, talcum powder 13kg, diatomite 11kg, aerosil 9kg, rosin acid 7kg, vaseline 6kg, alkylnaphthalene sulfonate 5kg, lard 4kg, red fuming nitric acid (RFNA) 3kg, methyl ethyl ketone 11kg, ethanol 25kg, water 55kg.
The preparation method of the present embodiment releasing agent is with embodiment 1.
Embodiment 3
The nano-titanium dioxide modified type paste releasing agent of a kind of valve body casting, be made up of the raw material of following mass fraction:
Methyl-silicone oil 80kg, nano titanium oxide 20kg, talcum powder 15kg, diatomite 13kg, aerosil 10kg, rosin acid 9kg, vaseline 8kg, alkylnaphthalene sulfonate 6kg, lard 5kg, red fuming nitric acid (RFNA) 4kg, methyl ethyl ketone 12kg, ethanol 30kg, water 60kg.
The preparation method of the present embodiment releasing agent is with embodiment 1.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. the nano-titanium dioxide modified type paste releasing agent of valve body casting, is characterized in that, be made up of the raw material of following mass fraction:
Methyl-silicone oil 70-80 part, nano titanium oxide 15-20 part, talcum powder 12-15 part, diatomite 10-13 part, aerosil 8-10 part, rosin acid 6-9 part, vaseline 5-8 part, alkylnaphthalene sulfonate 4-6 part, lard 3-5 part, red fuming nitric acid (RFNA) 2-4 part, methyl ethyl ketone 10-12 part, ethanol 20-30 part, water 50-60 part;
Its preparation method is as follows:
(1) first nano titanium oxide is scattered in ethanol, soak 1-2h, then the methyl-silicone oil being dissolved in methyl ethyl ketone is added, red fuming nitric acid (RFNA) is added again after mixing, be warming up to 50-60 DEG C of insulation 20-30min, ultrasonic 15-20min under supersonic frequency 22kHz, power 50W, obtains modified methyl silicone oil again;
(2) by diatomite dry 8-10h at 70-80 DEG C, then calcine 2-3h at 400-500 DEG C, then add in ball mill, after ball milling 10-15min, add talcum powder, aerosil, vaseline and water, continue ball milling 20-30min, obtain material I;
(3) first material I is joined in high-speed mixer, add rosin acid, alkylnaphthalene sulfonate and lard again, be warming up to 40-50 DEG C after mixing 5-10min, after lard melts completely, add material I and modified methyl silicone oil, continue mixing 10-15min, obtain material II;
(4) add in vacuum concentration pot by material II, material being concentrated into solvent is 15-20%, is down to discharging after room temperature, finally carries out metering packing until temperature of charge.
2. valve body casting according to claim 1 is with nano-titanium dioxide modified type paste releasing agent, it is characterized in that: the particle diameter of described nano titanium oxide is 30-50 nanometer, and needs vacuum drying 3-5h at 40-50 DEG C before using.
3. valve body casting according to claim 1 is with nano-titanium dioxide modified type paste releasing agent, it is characterized in that: the heating-up temperature of described vacuum concentration pot is 50-60 DEG C.
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| CN201510342027.3A CN104959530A (en) | 2015-06-18 | 2015-06-18 | Nano titanium dioxide improved pasty demolding agent for valve casting |
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| CN201510342027.3A CN104959530A (en) | 2015-06-18 | 2015-06-18 | Nano titanium dioxide improved pasty demolding agent for valve casting |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344925A (en) * | 2015-10-26 | 2016-02-24 | 无锡市永亿精密铸造有限公司 | Pipeline mold releasing agent for precise casting |
| CN105344921A (en) * | 2015-10-26 | 2016-02-24 | 无锡市永亿精密铸造有限公司 | Mold releasing agent for precise casting fan shell |
| CN105363994A (en) * | 2015-10-26 | 2016-03-02 | 无锡市永亿精密铸造有限公司 | Releasing agent for precisely cast blades |
| CN105945212A (en) * | 2016-06-20 | 2016-09-21 | 安徽宜安精密机械零部件有限公司 | Environment-friendly release agent for precise casting and preparing technology for environment-friendly release agent |
| CN106141075A (en) * | 2016-08-27 | 2016-11-23 | 安徽龙泉硅材料有限公司 | A kind of sand casting releasing agent utilizing precipitated silica to prepare |
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| JPH09216034A (en) * | 1996-02-07 | 1997-08-19 | Nok Corp | Release agent of metallic mold for casting |
| CN102974751A (en) * | 2012-10-31 | 2013-03-20 | 高金菊 | Mold release agent for precision casting |
| CN104117628A (en) * | 2014-07-30 | 2014-10-29 | 吴江市液铸液压件铸造有限公司 | Graphite powder casting coating and preparation method thereof |
| CN104588573A (en) * | 2015-01-09 | 2015-05-06 | 湖南大学 | Water-base graphite lubrication drawing agent |
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2015
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09216034A (en) * | 1996-02-07 | 1997-08-19 | Nok Corp | Release agent of metallic mold for casting |
| CN102974751A (en) * | 2012-10-31 | 2013-03-20 | 高金菊 | Mold release agent for precision casting |
| CN104117628A (en) * | 2014-07-30 | 2014-10-29 | 吴江市液铸液压件铸造有限公司 | Graphite powder casting coating and preparation method thereof |
| CN104588573A (en) * | 2015-01-09 | 2015-05-06 | 湖南大学 | Water-base graphite lubrication drawing agent |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344925A (en) * | 2015-10-26 | 2016-02-24 | 无锡市永亿精密铸造有限公司 | Pipeline mold releasing agent for precise casting |
| CN105344921A (en) * | 2015-10-26 | 2016-02-24 | 无锡市永亿精密铸造有限公司 | Mold releasing agent for precise casting fan shell |
| CN105363994A (en) * | 2015-10-26 | 2016-03-02 | 无锡市永亿精密铸造有限公司 | Releasing agent for precisely cast blades |
| CN105945212A (en) * | 2016-06-20 | 2016-09-21 | 安徽宜安精密机械零部件有限公司 | Environment-friendly release agent for precise casting and preparing technology for environment-friendly release agent |
| CN106141075A (en) * | 2016-08-27 | 2016-11-23 | 安徽龙泉硅材料有限公司 | A kind of sand casting releasing agent utilizing precipitated silica to prepare |
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Application publication date: 20151007 |