33results about How to "Good sand resistance" patented technology

The invention discloses a cast steel alcohol-based paint, as well as a preparation and application method thereof. The cast steel alcohol-based paint comprises the following components: 12-18 wt% of ethyl alcohol, 4.5-8 wt% of isopropanol, 0.4-2.5 wt% of black rosin, 0.35-3 wt% of solvent naphtha, 0.9-2.5 wt% of aluminium-magnesium silicate, 0.5-2.6 wt% of phenolic resin, 0.05-0.5 wt% of poval, 0.1-1 wt% of white carbon black, 0.15-2.5 wt% of attapulgite, 40-60 wt% of zircon powder, 10-25 wt% of fused alumina zirconia powder, 0.1-0.5 wt% of kunzite, 0.8-2.5 wt% of ludox and 0.5-3.5 wt% of pyrophyllite powder. The specific preparation and application method are shown in the specification. The cast steel alcohol-based paint has the following benefits: the refractoriness is high, sintering is easy, and the sand burning resistance is good; in addition, the solid content is high, the suspension property is good, the gas content is low and excellent thixotropic property is realized; moreover, after a coating is hardened, the strength is high, and the hygroscopicity resistance is good.

The invention relates to alcohol-based coating for large castings and a preparation method of the alcohol-based coating, in particular to casting coating for large nuclear power steel castings for basic phenolic resin sand molding production, and belongs to the field of casting coating. The casting coating is prepared from modified zirconium powder, lithium-based bentonite paste, magnesium aluminum silicate paste, alcohol soluble alky acid modified resin, modified rosin, low-viscosity polyvinyl butyral resin and carrier liquid. As for the coating, the suspension property (24 hours) is larger than 98%, the adhesive force is level 1, the gas volume is smaller than 10 ml / g, the solid content is larger than 73%, the coating abrasion performance is 0.06 g, and no burnt-on sand exists on the surfaces of the nuclear power castings of 200 tons of molten steel or above.

The invention discloses a magnesium aluminum spinel powder alcohol-based coating for heavy section steel castings, and relates to a casting coating. The alcohol-based coating comprises the following components in percentage by weight: 55 to 60 percent of magnesium aluminium spinel powder, 0.5 to 1.2 percent of binder, 0.11 to 0.18 percent of suspended thickening agent, 1.1 to 1.8 percent of suspending agent, 2.7 to 4.2 percent of fluxing agent, and the balance of organic solvent. In the magnesium aluminum spinel powder alcohol-based coating, the particle size of the magnesium aluminum spinel powder is between 270 and 320, and Al2O3 is more than or equal to 78 percent. The magnesium aluminum spinel powder is synthesized by electric smelting technology, has the characteristics of low expansion and high smelting point, and meets the requirement of serving as refractory aggregate of the coating for the steel castings; and the magnesium aluminum spinel powder has obvious price and resource advantages than zircon powder.

The invention provides an environment-friendly alcohol group ceramic casting coating. The environment-friendly alcohol group ceramic casting coating comprises, by weight, 250-350 parts of high-alumina powder, 50-150 parts of silica powder, 150-200 parts of pyrophillite powder, 30-50 parts of cosolvent, 20-30 parts of suspending agents, 8-15 parts of binding agents, 1-3 parts of surfactant and 250-350 parts of solvent. The environment-friendly alcohol group ceramic casting coating overcomes the defects in the prior art and is high in refractoriness, good in sintering stripping effect, low in price and excellent in comprehensive performance.

The invention relates to a manufacturing method in a production technique of paint for casting, in particular to a production technique of sand-type water based paint for casting, wherein the sand-type water based paint belongs to a casting accessory. The production technique comprises the following steps of: adding water, tributyl phosphate and CMC (carboxy methylated cellulose) in a dissolving pot firstly, stirring uniformly, dissolving the materials completely; filtering insoluble materials by a filter screen; adding water, sodium benzoate, a sodium base bentonite suspending agent, acetic acid and reducing glue in a stirring kettle, starting up electric stirring; slowly adding white corundum, sodium lignin sulfonate and water in the stirring kettle, stirring for 15-20min; adding water on the basis of the dilution situation, wherein the baum degree of the paint is higher than 95 after being stirred uniformly; transferring the paint prepared by the steps in a colloid mill, continuously milling for 2h, discharging and packaging into barrels to obtain the paint. The invention provides the novel production technique of the sand-type water based paint for casting, which has the following characteristics of environment friendliness, high coating strength and excellent painting property.