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CN104057021A - Preparing and painting methods of coating of metal mould casting and rising system - Google Patents

Preparing and painting methods of coating of metal mould casting and rising system Download PDF

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Publication number
CN104057021A
CN104057021A CN201410197884.4A CN201410197884A CN104057021A CN 104057021 A CN104057021 A CN 104057021A CN 201410197884 A CN201410197884 A CN 201410197884A CN 104057021 A CN104057021 A CN 104057021A
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China
Prior art keywords
coating
pouring
mold
metal type
waterglass
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CN201410197884.4A
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Chinese (zh)
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CN104057021B (en
Inventor
张殿喜
张在玉
杨秀凡
周士芸
卢春华
闫万珺
谌兰樱
陈召松
邓永荣
张忠政
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Guangdong Pioneer Mould Frame Technology Co Ltd
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Anshun University
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Publication of CN104057021A publication Critical patent/CN104057021A/en
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Publication of CN104057021B publication Critical patent/CN104057021B/en
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  • Mold Materials And Core Materials (AREA)

Abstract

本发明涉及金属型模具浇冒系统涂料的配置及涂刷方法。配置方法是将无水氧化锌、水玻璃、无水石棉粉进行混合,搅拌均匀后,将其倒入65℃~75℃的去离子水中,边倒边搅拌直至完全均匀为止;喷涂方法包括以下步骤:倒取已经配置好的涂料;将吹砂完毕的模具预热;用涂料笔对模具浇冒系统进行涂刷,厚度为0.3~0.5mm;冒口涂料厚度控制在1~3mm;预热固定,将喷涂好的金属型模具装入保温炉中烘烤,预热至模具工作温度350~420℃,并保持1~2h。本发明所述的方法配制的涂料和涂刷方法能够有效解决金属型生产过程中浇不足、冷隔等铸造缺陷。起到更好的保护金属型,进一步保证模具尺寸、质量稳定。The invention relates to the configuration and brushing method of the paint of the gating system of the metal mold. The configuration method is to mix anhydrous zinc oxide, water glass, and anhydrous asbestos powder. After stirring evenly, pour it into deionized water at 65 ° C ~ 75 ° C, and stir it until it is completely uniform; the spraying method includes the following Steps: Pour out the prepared paint; preheat the mold after sand blowing; paint the mold pouring system with a paint pen, with a thickness of 0.3-0.5mm; control the thickness of the riser paint at 1-3mm; preheat Fix it, put the sprayed metal mold into the holding furnace for baking, preheat to the working temperature of the mold at 350-420°C, and keep it for 1-2 hours. The paint prepared by the method of the invention and the brushing method can effectively solve the casting defects such as insufficient pouring and cold shut during the production process of metal molds. It can better protect the metal mold and further ensure the stability of the mold size and quality.

Description

Configuration and the brushing method of metal type dies pouring and riser systems coating
Technical field
The present invention relates to configuration and the brushing method of metal type dies pouring and riser systems coating, belong to metal type dies application of paints technical field.
Background technology
Compare with sand casting, permanent mold casting can Reusability, meets the theory of united nations environment programme division (UNEP)/green casting, technically with have economically many advantages.But metal mold is airtight, and without deformability, easily cause the casting flaws such as mould misrun, cold shut.For fear of defects such as mould misrun, cold shuts, conventionally at metal type dies pouring and riser systems working surface spray coating, thus the cooling velocity of adjusting mould, to reach the object that improves die quality.But existing coating and spraying and brushing method are still difficult to meet above requirement.
Summary of the invention
In order to overcome above technical problem, the object of the present invention is to provide a kind of preparation and brushing method of metal type dies pouring and riser systems coating, adopt the coating of the method preparation and this brushing method can effectively solve in metal mold production process the defects such as mould misrun, cold shut, sticking to mould.
To achieve these goals, the present invention is by the following technical solutions:
The collocation method of metal type dies pouring and riser systems coating, dry oxidation zinc, waterglass, anhydrous flake asbestos are mixed, after stirring, be poured in the deionized water of 65 ℃~75 ℃, limit bevelling stirs until completely evenly, the proportioning of described dry oxidation zinc, waterglass, anhydrous flake asbestos and deionized water is by weight percentage: dry oxidation zinc 9~11%, waterglass 8~10%, anhydrous flake asbestos 8~11%, all the other are deionized water.
The particle size diameter of described zinc oxide and flake asbestos is less than 0.6mm.
The modulus of described waterglass is 2.5~3.0; Density is 1.50~1.60g/cm 3.
The brushing method that adopts the metal type dies pouring and riser systems coating of said method configuration, comprises the following steps:
1) get the coating having configured in 24 hours;
2) the complete metal type dies of blast is preheating to coating brushing temperature: 280~350 ℃;
3) with coating pen, mould pouring and riser systems is brushed, running channel paint thickness is controlled at 0.3~0.5mm; Rising head paint thickness is controlled at 1~3mm;
4) pre-heat fixation, packs the metal type dies having sprayed in holding furnace into and toasts, and is preheated to 350~420 ℃ of mold work temperature, and keeps 1~2h.
Compared with prior art, the invention has the beneficial effects as follows:
1, the coating of the method for the invention configuration, its viscosity is fine, spray convenience, can on metal mold surface, form uniform thin layer, effectively protect metal mold pouring and riser systems, adjust the cooling velocity at mould each position in metal mold, control solidification sequence, improve gas in die cavity and discharge condition, effectively avoid the defects such as misrun, cold shut, sticking to mould; Can guarantee die size, steady quality, between molten metal and die cavity, form fire-resistant shield layer, improve the scouring capability of molten metal to die cavity, the service life of improving metal mold.
2, brushing method of the present invention is simple to operate, brushing is convenient, and cost of material is cheap.Can effectively avoid the defects such as mould misrun, cold shut, and difficult drop-off, be specially adapted to the magnesium alloys such as aviation, automobile, the production of aluminum alloy metal-type gravitational casting.
3, the particle size diameter of refractory material zinc oxide and flake asbestos is less than 0.6mm, and its fire resistance is good, and adopting modulus is 2.5~3.0, and density is 1.50~1.60g/cm 3waterglass, its caking property is good.
4, before spraying brush material, mould is carried out to sandblast and preheating, sandblast can make the adhesiveness of coating better, and preheating is evaporated rapidly moisture in coating, and the dope layer of spary is even and fine and close.Preheat temperature adopts 280~350 ℃, and spraying effect is best, if preheat temperature is too low, coating can not be dried very soon; Preheat temperature is too high, the easy bubbling of coating or peel off.
5, running channel paint thickness is controlled at 0.3~0.5mm, and rising head paint thickness is controlled at 1~3mm, if spraying is too thin, does not have the effect of the cooling velocity that regulates mould; If spray too thickly, dope layer easily comes off, and can have influence on running gate system size.
The specific embodiment
Below by specific embodiment, the invention will be further described, but claimed scope is not limited to content described in the present embodiment.
Embodiment 1, the collocation method of metal type dies pouring and riser systems coating, dry oxidation zinc, waterglass, anhydrous flake asbestos are mixed, after stirring, be poured in the deionized water of 65 ℃, limit bevelling stirs until completely evenly, the proportioning of described dry oxidation zinc, waterglass, anhydrous flake asbestos and deionized water is by weight percentage: dry oxidation zinc 9%, waterglass 8%, anhydrous flake asbestos 8%, all the other are deionized water.
The particle size diameter of described zinc oxide and flake asbestos is less than 0.6mm.
The modulus of described waterglass is 2.5; Density is 1.50g/cm 3.
The brushing method that adopts the metal type dies pouring and riser systems coating of said method configuration, comprises the following steps:
1) get the coating having configured in 24 hours;
2) the complete metal type dies of blast is preheating to spray painting temperature: 280~350 ℃;
3) with coating pen, mould pouring and riser systems is brushed, running channel paint thickness is controlled at 0.3~0.5mm; Rising head paint thickness is controlled at 1~3mm;
4) pre-heat fixation, packs the metal type dies having sprayed in holding furnace into and toasts, and is preheated to 350~420 ℃ of mold work temperature, and keeps 1~2h.
Embodiment 2, the collocation method of metal type dies pouring and riser systems coating, dry oxidation zinc, waterglass, anhydrous flake asbestos are mixed, after stirring, be poured in the deionized water of 75 ℃, limit bevelling stirs until completely evenly, the proportioning of described dry oxidation zinc, waterglass, anhydrous flake asbestos and deionized water is by weight percentage: dry oxidation zinc 11%, waterglass 10%, anhydrous flake asbestos 11%, all the other are deionized water.
The particle size diameter of described zinc oxide and flake asbestos is less than 0.6mm.
The modulus of described waterglass is 3.0; Density is 1.60g/cm 3.
The brushing method that adopts the metal type dies pouring and riser systems coating of said method configuration, comprises the following steps:
1) get the coating having configured in 24 hours;
2) the complete metal type dies of blast is preheating to spray painting temperature: 280~350 ℃;
3) with coating pen, mould pouring and riser systems is brushed, running channel paint thickness is controlled at 0.3~0.5mm; Rising head paint thickness is controlled at 1~3mm;
4) pre-heat fixation, packs the metal type dies having sprayed in holding furnace into and toasts, and is preheated to 350~420 ℃ of mold work temperature, and keeps 1~2h.
Embodiment 3, the collocation method of metal type dies pouring and riser systems coating, dry oxidation zinc, waterglass, anhydrous flake asbestos are mixed, after stirring, be poured in the deionized water of 70 ℃, limit bevelling stirs until completely evenly, the proportioning of described dry oxidation zinc, waterglass, anhydrous flake asbestos and deionized water is by weight percentage: dry oxidation zinc 10%, waterglass 9%, anhydrous flake asbestos 9%, all the other are deionized water.
The particle size diameter of described zinc oxide and flake asbestos is less than 0.6mm.
The modulus of described waterglass is that 2.8 density are 1.55g/cm 3.
The brushing method that adopts the metal type dies pouring and riser systems coating of said method configuration, comprises the following steps:
1) get the coating having configured in 24 hours;
2) the complete metal type dies of blast is preheating to spray painting temperature: 280~350 ℃;
3) with coating pen, mould pouring and riser systems is brushed, running channel paint thickness is controlled at 0.3~0.5mm; Rising head paint thickness is controlled at 1~3mm;
4) pre-heat fixation, packs the metal type dies having sprayed in holding furnace into and toasts, and is preheated to 350~420 ℃ of mold work temperature, and keeps 1~2h.
Embodiment 4, the collocation method of metal type dies pouring and riser systems coating, dry oxidation zinc, waterglass, anhydrous flake asbestos are mixed, after stirring, be poured in the deionized water of 66 ℃~74 ℃, limit bevelling stirs until completely evenly, the proportioning of described dry oxidation zinc, waterglass, anhydrous flake asbestos and deionized water is by weight percentage: dry oxidation zinc 9~11%, waterglass 8~10%, anhydrous flake asbestos 8~11%, all the other are deionized water.
The particle size diameter of described zinc oxide and flake asbestos is less than 0.5mm.
The modulus of described waterglass is 2.6~2.9, and density is 1.50~1.60g/cm 3.
The brushing method that adopts the metal type dies pouring and riser systems coating of said method configuration, comprises the following steps:
1) get the coating having configured in 20 hours;
2) the complete metal type dies of blast is preheating to spray painting temperature: 300~330 ℃;
3) with coating pen, mould pouring and riser systems is brushed, running channel paint thickness is controlled at 0.35~0.45mm; Rising head paint thickness is controlled at 1.5~2.5mm;
4) pre-heat fixation, packs the metal type dies having sprayed in holding furnace into and toasts, and is preheated to 380~400 ℃ of mold work temperature, and keeps 1~2h.

Claims (4)

1. the collocation method of metal type dies pouring and riser systems coating, it is characterized in that: dry oxidation zinc, waterglass, anhydrous flake asbestos are mixed, after stirring, be poured in the deionized water of 65 ℃~75 ℃, limit bevelling stirs until completely evenly, the proportioning of described dry oxidation zinc, waterglass, anhydrous flake asbestos and deionized water is by weight percentage: dry oxidation zinc 9~11%, waterglass 8~10%, anhydrous flake asbestos 8~11%, all the other are deionized water.
2. the collocation method of metal type dies pouring and riser systems coating as claimed in claim 1, is characterized in that: the particle size diameter of described dry oxidation zinc and anhydrous flake asbestos is less than 0.6mm.
3. the collocation method of metal type dies pouring and riser systems coating as claimed in claim 1, is characterized in that: the modulus of described waterglass is 2.5~3.0, and density is 1.50~1.60g/cm 3.
4. the brushing method of the metal type dies pouring and riser systems coating that the method for claim 1 configures, is characterized in that: comprise the following steps:
1) get the coating having configured in 24 hours;
2) by the complete mould and die preheating of blast to coating brushing temperature: 280~350 ℃;
3) with coating pen, mould pouring and riser systems is brushed, running channel paint thickness is controlled at 0.3~0.5mm; Rising head paint thickness is controlled at 1~3mm;
4) pre-heat fixation, packs the metal type dies having sprayed in holding furnace into and toasts, and is preheated to 350~420 ℃ of mold work temperature, and keeps 1~2h.
CN201410197884.4A 2014-05-12 2014-05-12 The configuration of metal type dies pouring and riser systems coating and brushing method Active CN104057021B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104439205A (en) * 2014-11-28 2015-03-25 常熟市勤丰铸件厂 Casting pouring process method
CN105537507A (en) * 2015-12-07 2016-05-04 禹州市神运机械有限公司 Paint for aluminum alloy casting and use method thereof
CN110102705A (en) * 2019-04-09 2019-08-09 启东市聚旺铸造有限公司 Metal mold casting head coating and preparation method thereof
CN114453555A (en) * 2022-01-26 2022-05-10 安顺学院 A kind of preparation technology of high temperature resistant coated sand

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5884655A (en) * 1981-11-12 1983-05-20 Kubota Ltd Painting method of die for centrifugal casting
CN1480272A (en) * 2003-05-16 2004-03-10 西北工业大学 Enthalpy-changing paint for metal mold casting of aluminum alloy thin-walled parts and its coating method
CN101480700A (en) * 2009-01-23 2009-07-15 安徽省恒泰活塞制造有限公司 Aluminum piston bottom riser head shrink-compensating casting technique
CN101658899A (en) * 2009-09-17 2010-03-03 上海交通大学 Magnesium-alloy metal-type casting coating and preparation method thereof
CN103182486A (en) * 2011-12-28 2013-07-03 上海航天精密机械研究所 Method for coating alloy metal mould casting die
CN103722122A (en) * 2013-12-31 2014-04-16 安顺学院 Spraying material for metal mold and spraying process thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5884655A (en) * 1981-11-12 1983-05-20 Kubota Ltd Painting method of die for centrifugal casting
CN1480272A (en) * 2003-05-16 2004-03-10 西北工业大学 Enthalpy-changing paint for metal mold casting of aluminum alloy thin-walled parts and its coating method
CN101480700A (en) * 2009-01-23 2009-07-15 安徽省恒泰活塞制造有限公司 Aluminum piston bottom riser head shrink-compensating casting technique
CN101658899A (en) * 2009-09-17 2010-03-03 上海交通大学 Magnesium-alloy metal-type casting coating and preparation method thereof
CN103182486A (en) * 2011-12-28 2013-07-03 上海航天精密机械研究所 Method for coating alloy metal mould casting die
CN103722122A (en) * 2013-12-31 2014-04-16 安顺学院 Spraying material for metal mold and spraying process thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104439205A (en) * 2014-11-28 2015-03-25 常熟市勤丰铸件厂 Casting pouring process method
CN105537507A (en) * 2015-12-07 2016-05-04 禹州市神运机械有限公司 Paint for aluminum alloy casting and use method thereof
CN110102705A (en) * 2019-04-09 2019-08-09 启东市聚旺铸造有限公司 Metal mold casting head coating and preparation method thereof
CN114453555A (en) * 2022-01-26 2022-05-10 安顺学院 A kind of preparation technology of high temperature resistant coated sand
CN114453555B (en) * 2022-01-26 2023-04-28 安顺学院 Preparation process of high-temperature-resistant precoated sand

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Effective date of registration: 20200110

Address after: No. 613, 615 and 617 Heshan Industrial City Heshun Road, Heshan City, Jiangmen City, Guangdong Province

Patentee after: Guangdong Pioneer Mould Frame Technology Co., Ltd.

Address before: 561000 No. 25, Anshun Development Zone, Guizhou, Xueyuan Road

Patentee before: ANSHUN UNIVERSITY

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