CN102989998B - Chilling alcoholic-group coating absorbing heat by using melting, sublimation and vaporization of substances - Google Patents

Chilling alcoholic-group coating absorbing heat by using melting, sublimation and vaporization of substances Download PDF

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Publication number
CN102989998B
CN102989998B CN201210567072.5A CN201210567072A CN102989998B CN 102989998 B CN102989998 B CN 102989998B CN 201210567072 A CN201210567072 A CN 201210567072A CN 102989998 B CN102989998 B CN 102989998B
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coating
alcohol
quench
heat absorption
solvent
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CN102989998A (en
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王建华
陈一磊
苏旭平
刘亚
吴长军
涂浩
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Shandong Xuedi Aluminum Technology Co., Ltd
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Changzhou University
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Abstract

The invention relates to a coating, particularly relates to a coating for a casting metal mold, and more particularly relates to a chilling alcoholic-group coating absorbing heat by using melting, sublimation and vaporization of substances. The chilling alcoholic-group coating is characterized by comprising the following components in percentage by weight: 27-28% of graphite powder, 21-22% of zinc oxide, 1-2% of tin powder, 1-2% of sulphur powder, 1-2% of hexamethyl benzene, 1.2-1.4% of a binding agent, 1.3-1.5% of a suspending agent, 0.2-0.3% of an addition agent and the balance of an alcoholic-group solvent. The powders in the coating have good thermal conductivity; and few tin powder, sulphur powder and hexamethyl benzene are added, so that through heat absorption due to the melting of the tin powder, the sublimation of the sulphur powder and the vaporization of the hexamethyl benzene, the cooling speed of the surface of a metal mold casting, the thickness of the chilling layer of the surface of a zinc alloy casting and the surface properties of the castings can be increased.

Description

A kind of Quench alcohol-base paint that utilizes material fusing and distillation and vaporization heat absorption
Technical field
The present invention relates to a kind of coating, relate in particular to a kind of zinc alloy metal mold casting coating, concrete finger oneplant the Quench alcohol-base paint that utilizes material fusing and distillation and vaporization heat absorption.
Background technology
Compared with ordinary sand casting, because organizing of die casting and Metal mould casting is dense, therefore its mechanical property is higher.But in continuous flow procedure, due to the rising of mold temperature, cooling velocity when casting solidification will reduce, thereby affect microscopic structure and the mechanical property of foundry goods.A large amount of experiments show: on casting mold, brushing swashs effectively refinement foundry goods tissue of cold type paint, improves quality and the mechanical property of foundry goods.
Owing to Metal mould casting and die casting surface conventionally need to repairing processing, if fine grained region, top layer is too thin, the good fine grained region of mechanical property by processed fall, cause the exposure of non-fine grained region, simultaneously the defect such as spilehole (pin sky) and impurity of nexine also can come out, thereby makes greatly to reduce through the surface quality of the foundry goods of Surface Machining processing.In the situation that fine grained region thickness is not too thick, if still remain with parts of fine crystalline region tissue at finished surface, just must improves the design accuracy of compression mod, thereby affect design efficiency, increase cost.Therefore by the surface layer grain tissue of Quench coating fining metal type and die casting, increase the thickness of fine grained region, can improve the mechanical property on top layer on the one hand, can improve on the other hand design efficiency, the reduction castings production cost of die casting.
Know-why of the present invention is the fusing heat absorption of low melting point glass putty while utilizing molten metal casting, the distillation heat absorption of Cosan and the vaporization of hexamethylbenzene heat absorption, the cooling velocity on Zinc alloy casting top layer is improved, the grain structure of refinement zinc alloy surface, the thickness of increase fine grained region.
The object of the invention is by metal mold and the strong coating of die-casting die external coating Quench ability, make foundry goods top layer obtain the thickness of tiny grain structure, increase fine grained region, thereby improve the mechanical property of Zinc alloy casting superficial layer, meanwhile can reduce the requirement to Design of Die precision, thereby reduce costs production cost.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of reasonably powder formulation, improves coating thermal conductivity and chill effect thereby reach.
The present invention solves the problems of the technologies described above the technical scheme adopting to be: a kind of zinc alloy metal mold casting Quench alcohol-base paint, it is characterized in that: graphite powder has wherein improved the thermal conductivity of coating, glass putty fusing heat absorption, Cosan distillation heat absorption, hexamethylbenzene vaporization heat absorption.
Further the weight percentage of the concrete component of this coating is as follows:
Graphite powder 27 ~ 28%, zinc oxide 21 ~ 22%, glass putty 1 ~ 2%, Cosan 1 ~ 2%, hexamethylbenzene 1-2%, binding agent 1.2 ~ 1.4%, suspending agent 1.3 ~ 1.5, auxiliary agent 0.2 ~ 0.3%, all the other are alcohol-based solvent.
The raw material that configuration coating adopts all can have been bought on the market.Graphite powder is flake-like crystal graphite, and binding agent is epoxy resin, preferably bisphenol A type epoxy resin, and suspending agent is sodium bentonite, auxiliary agent is sodium carboxymethylcellulose; Described alcohol-based solvent is that the purity that is not less than 96% alcohol solvent and 33 ~ 35% by the purity of percentage by weight 65 ~ 67% is not less than 97% acetone solvent and mixes.
The preparation process of this Quench coating: weighing, add volume by Quench formulation for coating material is in the container of 100 milliliters, notes suspending agent, binding agent and auxiliary agent and solvent to add successively graphite powder, zinc oxide, glass putty, Cosan and hexamethylbenzene after evenly again when reinforced; Employing glass bar stirs, and reinforced complete mixing time is 30-35min; Adopt being coated with property, buoyancy, surface strength and the gas forming amount key property of routine techniques means inspection coating, finally make Quench coating finished product, single batch of output is being 1 kilogram.
The present invention is that to select graphite powder be main powder, and graphite is its thermal conductivity of nonmetallic heat conductive material and metal approach; The fire resistance of graphite is splendid simultaneously, and not by liquid metal is infiltrated; Graphite is a kind of mineral that nature extensively exists, and graphite has good thermal conductivity with electronics, the acting in conjunction of phonon double mechanism; Flake-like crystal and high kish, as heat filling, have very high research and development to be worth; What the present invention selected is flaky graphite; Thermal conductivity improves, and the crystal grain of Metal mould casting obtains refinement, and performance is improved; In the present invention's formula, there is glass putty 1 ~ 2%, Cosan 1 ~ 2%, hexamethylbenzene 1-2%, under casting condition, can realize glass putty fusing heat absorption, Cosan distillation heat absorption, hexamethylbenzene vaporization heat absorption, endothermic process improves the cooling velocity on Zinc alloy casting surface, the crystal grain of refinement zinc alloy surface, significantly increases the thickness of fine grained region, top layer, improves the performance on Zinc alloy casting surface.
Brief description of the drawings
Fig. 1 is the preparation flow schematic diagram of a kind of zinc alloy metal mold casting of the present invention alcohol-base paint;
Fig. 2 does not use brushing of the present invention, and mold temperature is at the fine grained region of 60 DEG C of kirsite apperances thickness;
Fig. 3 does not use brushing of the present invention, and mold temperature is at the fine grained region of 100 DEG C of kirsite apperances thickness;
Fig. 4 does not use brushing of the present invention, and mold temperature is at the fine grained region of 160 DEG C of kirsite apperances thickness;
Fig. 5 is the coating brushing that uses example 1 of the present invention, and mold temperature is at the fine grained region of 60 DEG C of kirsite apperances thickness;
Fig. 6 is the coating brushing that uses example 1 of the present invention, and mold temperature is at the fine grained region of 100 DEG C of kirsite apperances thickness;
Fig. 7 is the coating brushing that uses example 1 of the present invention, and mold temperature is at the fine grained region of 160 DEG C of kirsite apperances thickness;
Fig. 8 is the coating brushing that uses example 2 of the present invention, and mold temperature is at the fine grained region of 60 DEG C of kirsite apperances thickness;
Fig. 9 is the coating brushing that uses example 2 of the present invention, and mold temperature is at the fine grained region of 100 DEG C of kirsite apperances thickness;
Figure 10 is the coating brushing that uses example 2 of the present invention, and mold temperature is at the fine grained region of 160 DEG C of kirsite apperances thickness.
Detailed description of the invention
For allowing above-mentioned purpose of the present invention, feature and a little can become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
Percentage by weight (%) the preparation zinc alloy metal mold casting alcohol-base paint of expressing as follows respectively:
Table 1 formulation for coating material
Table 2 alcohol-based solvent formula
As Fig. 1 according to above table through the suspension of the coating of filling a prescription, weigh, stir, check, surface strength, gas forming amount key property, adjustment, stir inspection and make coating finished product again; Wherein: when reinforced, note suspending agent, binding agent and auxiliary agent and solvent to add successively again graphite powder, zinc oxide, glass putty, Cosan and hexamethylbenzene after evenly; Prepare 1 kilogram of Quench coating for single batch, the mixing time after feeding in raw material must not be lower than 30-35min.
Concrete effect
Fine grained region, table 3 each situation surface average thickness
As shown in the metallographic structure of the foundry goods under 200 of Fig. 5-Figure 10 times, adopt the thickness of energy refinement foundry goods surface layer grain tissue of the present invention, increase fine grained region, because grain refinement can improve the mechanical property on foundry goods top layer.The increase of fine grained region thickness can improve the quality after cast(ing) surface polishing, also can reduce the requirement to Design of Dies precision, improves Design of Dies efficiency, reduces production cost.
The effect of observing from figure is mainly the variation of fine grained region, top layer thickness.Total rule is at the same temperature, along with the raising of the Quench agent content in coating, fine grained region thickness is increased.

Claims (5)

1. oneplant the Quench alcohol-base paint that utilizes material fusing and distillation and vaporization heat absorption, it is characterized in that: the component of described coating is calculated as follows according to weight percentage: graphite powder 27 ~ 28%, zinc oxide 21 ~ 22%, glass putty 1 ~ 2%, Cosan 1 ~ 2%, hexamethylbenzene 1-2%, binding agent 1.2 ~ 1.4%, suspending agent 1.3 ~ 1.5, auxiliary agent 0.2 ~ 0.3%, all the other are alcohol-based solvent.
2. as claimed in claim 1 oneplant the Quench alcohol-base paint that utilizes material fusing and distillation and vaporization heat absorption, it is characterized in that: described graphite powder is flake-like crystal graphite, described binding agent is epoxy resin, and described suspending agent is sodium bentonite, and described auxiliary agent is sodium carboxymethylcellulose; Described alcohol-based solvent is that the purity that is not less than 96% alcohol solvent and 33 ~ 35% by the purity of percentage by weight 65 ~ 67% is not less than 97% acetone solvent and mixes.
3. as claimed in claim 2 oneplant the Quench alcohol-base paint that utilizes material fusing and distillation and vaporization heat absorption, it is characterized in that: described binding agent is bisphenol A type epoxy resin.
4. as claimed in claim 1 oneplant the preparation method of the Quench alcohol-base paint that utilizes material fusing and distillation and vaporization heat absorption, it is characterized in that: weigh by Quench formulation for coating material, when reinforced, note suspending agent, binding agent and auxiliary agent and solvent to add successively again graphite powder, zinc oxide, glass putty, Cosan and hexamethylbenzene after evenly; Employing glass bar stirs, and the mixing time after feeding in raw material is controlled at 30-35min; Make Quench coating finished product.
5. as claimed in claim 4 onethe preparation method who plants the Quench alcohol-base paint that utilizes material fusing and distillation and vaporization heat absorption, is characterized in that: single batch of output of described coating is 1 kilogram.
CN201210567072.5A 2012-12-25 2012-12-25 Chilling alcoholic-group coating absorbing heat by using melting, sublimation and vaporization of substances Active CN102989998B (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106077444A (en) * 2016-07-15 2016-11-09 江苏迅隆科技发展有限公司 A kind of Quench coating of novel replacement chill usefulness and preparation method thereof
CN110433722A (en) * 2019-08-22 2019-11-12 张源 Wall water-repellent paint system of processing and processing method and a kind of wall water-repellent paint
CN110538963A (en) * 2019-10-21 2019-12-06 徐州市国艺铝合金包装箱有限公司 Packaging coating suitable for aluminum alloy
CN110732632A (en) * 2019-11-08 2020-01-31 徐州丰华金属材料有限公司 Preparation method of novel zinc alloy coatings

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86100032A (en) * 1986-01-04 1987-07-15 陕西机械学院 Light-coloured coating for iron-casting core
CN1596322A (en) * 2001-11-29 2005-03-16 艾弗里·丹尼森公司 Process for making angstrom scale and high aspect functional platelets
CN1847336A (en) * 2006-04-07 2006-10-18 沈阳金安铸造材料厂 Light-colored alcohol-base paint
CN101088660A (en) * 2007-07-13 2007-12-19 沈阳铸造研究所 Light-color cast iron paint with high aluminium polycrystalline composite aggreagte
CN102366814A (en) * 2011-10-11 2012-03-07 许立新 Method for preparing paint used for aluminum alloy low pressure casting metal type
WO2012048712A1 (en) * 2010-10-14 2012-04-19 Hempel A/S High solids antifouling paint composition

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86100032A (en) * 1986-01-04 1987-07-15 陕西机械学院 Light-coloured coating for iron-casting core
CN1596322A (en) * 2001-11-29 2005-03-16 艾弗里·丹尼森公司 Process for making angstrom scale and high aspect functional platelets
CN1847336A (en) * 2006-04-07 2006-10-18 沈阳金安铸造材料厂 Light-colored alcohol-base paint
CN101088660A (en) * 2007-07-13 2007-12-19 沈阳铸造研究所 Light-color cast iron paint with high aluminium polycrystalline composite aggreagte
WO2012048712A1 (en) * 2010-10-14 2012-04-19 Hempel A/S High solids antifouling paint composition
CN102366814A (en) * 2011-10-11 2012-03-07 许立新 Method for preparing paint used for aluminum alloy low pressure casting metal type

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Effective date of registration: 20201130

Address after: Shandong Yuejin Road 277300 Zaozhuang City Yicheng Economic Development Zone No. 8

Patentee after: Shandong Xuedi Aluminum Technology Co., Ltd

Address before: Gehu Lake Road Wujin District 213164 Jiangsu city of Changzhou province No. 1

Patentee before: CHANGZHOU University