A kind of cast steel high density alcohol-base paintTechnical field
Alcohol radical alcohol-base paint is used the present invention relates to a kind of foundry facing, more particularly to a kind of casting.
Background technology
Find that the cast paint typically using aluminous refractory as aggregate is all to select one in the patent retrieval of prior artPlant or several different refractory material compoundings are formed, and for the distribution of particles of every kind of aggregate, often from a kind of size specification,And defined is not very specific.
And the aggregate in traditional high-quality cast steel alcohol-base paint selects zirconium English powder mostly, the same of high-quality is being obtainedWhen, substantial amounts of zirconium English powder also brings high material cost to pay.
The content of the invention
The technical problems to be solved by the invention are to provide for a kind of lower high density high-quality casting of price and applied with alcohol radicalMaterial.
In order to solve the above technical problems, technical scheme is as follows：
A kind of cast steel high density alcohol-base paint, it is characterised in that：Including refractory aggregate 66~75%, binding agent 0.5~1.5%th, suspending agent 1.0~2.5%, isopropanol 21~30%；
Wherein, described refractory aggregate includes white fused alumina 50~70%, Brown Alundum 20-40% and mullite 10~30%；And the size distribution of each refractory aggregate accounts for accounting between 10-20%, 38-53 μm of diameter by below 38 μm of diameter30-50% is accounted between 40-60%, 53-75 μm of diameter, and more than 75 μm of diameter accounts for 0-10%；
Described binding agent is made up of newtrex and maleic rosin, and its weight ratio is 1:2；
Described suspending agent is organobentonite,
Above each component ratio is classified as percentage by weight.
The refractory aggregate of the high density alcohol-base paint of the present invention is mainly made up of the corundum material of High-Alumina, and these materials are certainlyPurity is high, good sharp property, acid-alkali-corrosive-resisting, high temperature resistant, hot performance stable.White fused alumina is to aoxidize powder as raw material using fine aluminum, warpElectric smelting is refined crystallization and formed, and white fused alumina hardness is slightly above Brown Alundum, and toughness is slightly lower.Brown Alundum is with bauxite, anthracite, iron filingsFor primary raw material, formed in electric arc furnaces through pyrolytic semlting, in sepia, good toughness.White fused alumina is utilized respectively when actual useHigh refractoriness and Brown Alundum toughness so that dope layer both ensures refractoriness, there is bright and clean surface again.Mullite is used as one kindThe conditioning agent of refractoriness, mullite is that a series of mineral being made up of aluminosilicate are referred to as.It is that aluminosilicate is generated at high temperatureMineral.Crystal is for elongated needle-like and in radiation tufted.Mullite can decomposite corundum and liquid phase at high temperature, can be according to notSame casting demand adjustment addition, it is ensured that melt surface only occurs for dope layer in the whole cast of casting and process of setting.So, we just can use cost it is lower refractory aggregate substitution zirconium English powder aggregate, using we by lot of experiments, summary,Research obtains the mixing refractory aggregate of comprehensive proportioning and performance complement, equally obtains high refractoriness, possesses the characteristic of melt surface,And with more interval than larger softening temperature.
For cast paint, the different grain size distribution of aggregate directly reflects the difference of its specific surface area.Coating is matched somebody with somebodySolvent, binding agent and suspending agent in side etc. are determined according to the property of aggregate, and the additional proportion of these additivesThen there is direct relation with the specific surface area of aggregate.If not considering general in the size distribution of aggregate, traditional handicraft comprehensivelyThe weight of refractory aggregate is than that can only account for the 60%-70% of whole coating, if the score for continuing to increase aggregate will directly make paintingExpect hydraulic performance decline, the present invention pass through rational granularity type selecting, specific binding agent optimize so that aggregate content can reach 75% withOn.
The specific surface area of refractory aggregate is distributed and is effectively ensured by granulate, so that it is guaranteed that the stabilization of coating qualityProperty.Stable outer-area in unit-quantity can ensure that the addition of binding agent in coating, it is ensured that the surface of coating in use is strongDegree.The different granularity of refractory material, can produce different melt temperatures at high temperature, it is possible to use varigrained uniform pointCloth so that refractory material gradually melts in different temperature ranges, so as to control the softening of dope layer at high temperature andThe temperature range of melting.So that the high density alcohol-base paint of the present invention obtains excellent combination property.
Brief description of the drawings
Fig. 1 shows the production technology of cast steel high density alcohol-base paint of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, completeSite preparation is described.
A kind of cast steel high density alcohol-base paint, including refractory aggregate 66~75%, binding agent 0.5~1.5%, suspending agent1.0~2.5%, isopropanol 21~30%；
Wherein, described refractory aggregate includes white fused alumina 50~70%, Brown Alundum 20-40% and mullite 10~30%；And the size distribution of each refractory aggregate accounts for accounting between 10-20%, 38-53 μm of diameter by below 38 μm of diameter30-50% is accounted between 40-60%, 53-75 μm of diameter, and more than 75 μm of diameter accounts for 0-10%；
Described binding agent is made up of newtrex and maleic rosin, and its weight ratio is 1:2；
Described suspending agent is organobentonite,
Above each component ratio is classified as percentage by weight.
Then coating finished product of the present invention is produced according to the production technology shown in Fig. 1.
The content of component is as follows in wherein each embodiment：
| Component | | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Refractory aggregate | 66~75% | 66 | 72 | 73 | 75 |
| Binding agent | 0.5~1.5% | 1.5 | 0.5 | 1.2 | 1.5 |
| Suspending agent | 1.0~2.5% | 2.5 | 2.0 | 1.0 | 2.5 |
| Isopropanol | 21~30% | 30 | 25.5 | 24.8 | 21 |
Refractory aggregate component is as follows in wherein each embodiment：
| Component | | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| White fused alumina | 50~70% | 50 | 50 | 55 | 70 |
| Brown Alundum | 20-40% | 40 | 20 | 25 | 20 |
| Mullite | 10~30% | 10 | 30 | 20 | 10 |
The size distribution of each of which refractory aggregate is as follows：
High refractoriness is resulted in for above-specified high density alcohol-base paint in sand mold casting production, possess the spy of melt surfaceProperty, and with more interval than larger softening temperature.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, anyThose familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be containedCover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.