38results about How to "Wide melting temperature range" patented technology

The invention discloses a low-temperature, high-hardness and high-abrasion-resistance fully-polished glaze which contains a base material and an admixture. The base material is prepared from, by weight, 15-25% of albite, 8-16% of potassium feldspar, 6-10% of kaolin, 5-8% of calcined talc, 5-10% of dolomite, 4-12% of barium carbonate, 3-5% of calcined zinc oxide, 4-20% of transparent frit, 16-28% of high-temperature frit, 5%-18% of quartz and 7-15% of alumina micro-powder, wherein the admixture is an organic silicon nano-solution or white carbon black, and the usage amount of the admixture is 15-2% by weight. In addition, the invention further discloses a preparation method of the low-temperature, high-hardness and high-abrasion-resistance fully-polished glaze and a product prepared by the same. The melting temperature is reduced through a reasonable formula system, the melting temperature range of the glaze is enlarged while energy saving and emission reduction are promoted, the hardness and abrasion resistance of the glaze surface are remarkably improved, the higher usage requirements can be very well met, and technical progress and application development of the industry of architectural ceramics are promoted.

The invention discloses raw full-polish glaze with high abrasion resistance and a method for preparing the raw full-polish glaze. The raw full-polish glaze comprises, by weight, 28-38 parts of potassium feldspar, 4-7 parts of kaolin, 5-10 parts of sintered talc, 5-10 parts of dolomite, 16-22 parts of barium carbonate, 5-8 parts of sintered zinc oxide, 10-18 parts of fused quartz, 3-12 parts of corundum micro-powder, 1-5 parts of lithium-containing mineral and 5-10 parts of additives. The raw full-polish glaze and the method have the advantages that corundum particles and fused quartz particles are led into the raw full-polish glaze, accordingly, the availability of partial original abrasion-resistant particles can be guaranteed, large quantities of anorthite and celsian micro-crystals further can be generated, and the abrasion resistance of glaze surfaces can be improved; the lithium-containing mineral is added into the raw full-polish glaze, and accordingly liquid phases can be generated by the raw full-polish glaze at the low temperatures; lithium element ions have small radiuses, tight glass networks can be formed, and accordingly the abrasion resistance of the glaze surfaces can be improved.

The invention relates to Longquan celadon jasper green glaze, a jasper green Longquan celadon product and a preparation method of the product.The Longquan celadon jasper green glaze is prepared from, by weight, 30-50% of potassium feldspar, 10-20% of quartz, 15-25% of violet gold, 7-13% of limestone, 6-10% of fluorite, 3-5% of ZnO and 2-4% of SnO2, wherein the total percentage of all the ingredients is 100%.On the basis of ensuring the traditional aesthetic effect of Longquan celadon, the violet gold with the high iron content is introduced as a coloring agent, meanwhile, the ZnO and the SnO2 are introduced as emulsion, the Longquan celadon glaze similar to jasper in appearance, color and texture is obtained by adjusting the formula of the glaze, and the purpose of enriching colors and enamels of Longquan celadon is achieved.

The invention relates to light ceramsite prepared from oil shale semi-coke and a preparation method thereof. The light ceramsite consists of the raw materials such as oil shale semi-coke, oil shale ash, clay and water glass. The preparation method comprises the process steps such as pulverization, pelletizing, sintering and cooling. The light ceramsite provided by the invention has the advantages of widely available raw materials, easiness in preparation, low production cost, environmental friendliness and the like; by implementing the technical scheme, much land occupation caused by stacking oil shale semi-coke and ash can be reduced, consequent severe threat to the ecology, environment and human health is relieved, the problems such as low capacity value, low water absorption and low cylinder compressive strength of the commercially available ceramsite products are solved, and the use value of the oil shale semi-coke is increased so that the oil shale semi-coke is turned into wealth; and the light ceramsite is suitable for industrial production.

The invention provides a composite rare earth RE cast aluminum alloy material and a preparation method thereof. The alloy is mainly prepared from the following components in percentage by mass: 0.12%-0.85% of Er, 0.18%-0.68% of Sc, 5.8%-7.5% of Si, 0.15%-0.48% of Mg, 0.08%-0.20% of Ti, less than 0.25% of Fe, less than 0.10% of Cu, less than 0.05% of Mn, less than 0.08% of Zn and the balance of Al.Eutectic silicon is refined into 1[mu]m granules, and the structure of the cast aluminum alloy is improved, a Al3.21Si0.47 phase, a Al3Sc phase, a Sc Phase, a ScSi2 phase, an ErSi2 phase and other hard phases are formed, the performance is greatly improved, especially the erbium and scandium elements are dispersed and distributed in the aluminum alloy, so that the aluminum alloy has higher strength, plastic deformation, elastic modulus and wider melting temperature range and has stronger practicability.

The invention discloses a lightweight and high-strength ceramsite prepared by taking slate as a raw material, and a preparation method thereof, and relates to the technical field of preparation of building materials. The lightweight and high-strength ceramsite is prepared from the raw materials by mass percent: 50% -90% of slate, 5% -30% of fly ash, 2% -6% of metal magnesium slag, 1% -10% of oil shale semicoke and 1% -4% of dolomite. The fly ash added into the lightweight and high-strength ceramsite taking slate as the raw material can reduce SiOs as well as increase the Al2O3 content; the occupation on a large amount of land by the slate tailings piling can be reduced, thereby relieving the serious threat on the ecology, the environment and the human health, and further solving the problem that the ceramsite product on the former market is high in piling density, high in water absorption and low in cylinder pressure strength; a value in use of the slate taiings, the metal magnesium slag, the oil shale semicoke and flyash are improved, the solid wastes are changed into valuables, and the lightweight and high-strength ceramsite is suitable for the industrial production.

The invention discloses a slurry for craft ceramic and a composition for preparation of the slurry. The composition comprises the following matters in parts by weight: 40 to 60 parts of washed clay, 5 to 10 parts of kaolin, 3 to 8 parts of ball clay, 3 to 5 parts of potassium feldspar, 3 to 5 parts of lithium feldspar, 10 to 15 parts of dolomite, 8 to 15 parts of diopside and 0.01 to 0.03 part of cobalt blue. The slurry prepared from the composition provided by the invention has the advantages of low sintering temperature, short sintering time, low energy consumption, and high product strength and whiteness.

The invention discloses a heat insulation hot runner system of an automobile injection mold. The heat insulation hot runner system comprises a fixed die, a movable die and a hot runner, wherein the fixed die comprises a fixed seat plate; a positioning screw is arranged on the fixed seat plate; the movable die comprises a movable plate; a pouring gate sleeve is arranged on a fixed plate; one end of the pouring gate sleeve is connected with an injection molding machine, and the other end of the pouring gate sleeve is connected with a nozzle through the hot runner; a needle valve is arranged in the nozzle, so that the phenomenon of tape casting of melted plastic is avoided; the hot runner and a surrounding hot runner plate are made of a heat insulation material, and the hot runner and the hot runner plate are fixed through a sealing plug; the hot runner is also provided with a spring pressing ring; an electrothermal ring for keeping the temperature of the nozzle is arranged round the nozzle; the nozzle is connected with a molded core through a pouring gate lining; a push rod is arranged on a movable plate panel; the head of the push rod leans against a piece pushing plate. The heat insulation hot runner system is used for die opening, has a heat insulation function and keeps the constant temperature; plastic in a pouring system is always in a melted state, and a multi-point pouring gate can be realized; the forming period is short, and the production efficiency is high.

A disclosed zirconite tailing and coal gangue ceramic grinding ball is prepared from the following components in percentage by mass: 40-80 percent of zirconite tailings, 5-30 percent of coal gangue, 5-20 percent of aluminum oxide, 2-10 percent of feldspar, 1-5 percent of dolomite, 1-5 percent of talc, 1-5 percent of calcite, 1-5 percent of barium carbonate and 1-10 percent of quartz. The inventionfurther discloses a preparation method of the zirconite tailing and coal gangue ceramic grinding ball. The ceramic grinding ball prepared by taking the zirconite tailings and the coal gangue as mainraw materials is suitable for the related fields of mine metal mineral grinding, white mineral grinding, petroleum fracturing propping agents and the like, solid waste resource utilization is realized, and the production cost is greatly reduced.

The invention relates to a manufacturing method of a downward blowing water-cooling blow polyethylene film. The invention is characterized in that downward blowing wind-cooling is first carried out to polyethylene bulb which is extruded out of a finish mold and water-cooling is carried out thereof so as to implement the sudden reduction of the temperature of a fused mass film. The temperature of the fused mass film is reduced rapidly to ensure that the viscosity of the fused mass is increased rapidly, the active capability of molecular chain is weakened, the crystallisation process is not perfect, the formed crystal is small, the film with low degree of crystallisation has wider melting temperature range, good transparency and flexible performance; meanwhile, after being cooled by water, the film adsorbs part of the low molecules which are separated out of the surface and reduces the peculiar smell of the film.

The invention relates to a ceramic product and a preparation method thereof, in particular to a velvet glaze ceramic product and a preparation method thereof. A blank after bisque firing adopts a glazed velvet glaze for glaze firing to obtain the velvet glaze ceramic product. The velvet glaze with modern ceramic feature is developed through the technology innovation of the production technique; the surface of the glaze presents the texture touch enjoyment with jade-like crystal clearness and the visual effect; unique style is achieved without belonging to the traditional glaze; the velvet glaze is one development and breakthrough of the ceramic decoration technology. Furthermore, compared with the low-temperature color glaze, the velvet glaze has the advantages of good stability of surface high temperature resistance and capability of reburning for many times, so that the products can execute a plurality of subsequent techniques such as pattern color drawing and stained paper decoration, and the modern ceramic style is shown more perfectly.

The invention belongs to the technical field of electric porcelain glaze, and particularly relates to black glaze for an insulator and a preparation method of the black glaze. The black glaze comprises the following raw materials in parts by mass: Hunan high-potassium low-sodium feldspar 27-31 parts, Hunan high-sodium low-potassium feldspar 4-8 parts, ball clay 3-7 parts, hard kaolin 18-22 parts,calcined talc 9-13 parts, limestone 5-9 parts, quartz powder 21-25 parts, barium carbonate 1-3 parts and black color base 6-10 parts. After the black glaze for the insulator and a green body form porcelain, the surface of the porcelain body is bright black, smooth, bright, fine, mild and moist, and the requirements of customers on black electric porcelain can be well met. Moreover, the black glazein the scheme can be well combined with the blank body, an excellent middle layer can be generated between the glaze and the blank body after the black glaze is formed into the porcelain, the performance of the porcelain can be greatly improved (the strength of the porcelain is improved by 22% or above), and the black glaze for the insulator is developed to achieve the design purpose and meet theprocess and industry standards of companies.

The invention belongs to the technical field of electric porcelain glaze, and particularly relates to purple glaze for insulator processing and a processing method of the purple glaze, and the purpleglaze for insulator processing comprises the following components in parts by weight: 26-31 parts of potassium feldspar, 5-10 parts of albite, 3-7 parts of ball clay, 19-23 parts of hard kaolin, 9-13parts of calcined talc, 5-9 parts of limestone, 22-26 parts of quartz powder, 1-3 parts of barium carbonate and 6-10 parts of purple color base. After the purple glaze for an insulator and a green body form porcelain, the surface of the porcelain body is bright purple, smooth, bright, fine, mild and moist, and the requirements of customers on purple electric porcelain can be well met. Moreover, the purple glaze of the scheme can be well combined with the green body, an excellent middle layer can be generated between the glaze and the green body after the porcelain is formed, the performance ofthe porcelain can be greatly improved (the strength of the porcelain is improved by 22% or above), and the development of the purple glaze for the insulator achieves the design purpose and meets theprocess and industry standards of companies.

The invention discloses a preparation process of a transmuted tile with a uniform transmutation effect. Chromogenic glaze slip is applied to the surface of a ceramic tile bisque, the surface of a bisque body with a glaze slip layer is dried, and a transmuted tile finished product is obtained by firing. The ceramic tile bisque is prepared from the following raw components in percentage by mass: 50to 60 percent of plastic pug, 10 to 20 percent of clinker particles, 10 to 15 percent of a sandy raw material, 5 to 15 percent of a flux and 0.5 to 2 percent of lithium feldspar. The chromogenic glazeslip is prepared from the following raw components in percentage by mass: 50 to 65 percent of crude ore pug, 4 to 8 percent of rock flour, 6 to 8 percent of fine sand, 6 to 10 percent of a soluble metal salt, 10 to 15 percent of a chromogenic auxiliary and the balance of water. According to the preparation process of the transmuted tile with the uniform transmutation effect, a chromogenic glaze slip application manner is adopted, so that the problem of high occurrence of unstable transmutation effect on the surface of the bisque body is solved, and the yield is high.

The invention belongs to the technical field of cables, and discloses a high-temperature fire-resistant watertight insulating rubber for a cable applied to safe return of a ship to a port, and a manufacturing method of the high-temperature fire-resistant watertight insulating rubber. The rubber comprises the following raw material components in parts by weight: 20 parts of methyl vinyl silicone rubber 110-3-B, 20 parts of EPDM (ethylene propylene diene monomer) Mitsui EPT 4045M, 0.6 to 1 part of bis(tert-butylperoxyisopropyl)benzene (BIPB), 0.2 to 0.3 part of trimethylolpropane trimethacrylate (LS-3-80); 0.4 to 0.6 part of an amine aldehyde compound anti-aging agent XH-3, 0.2 to 0.4 part of 2-mercapto benzimidazole (MBI), 5 to 9 parts of white carbon black having undergone gas-phase-method surface treatment, 4 to 8 parts of low-temperature low-melting-point glass powder with a softening temperature of 400-700 DEG C, 4 to 8 parts of high-temperature low-melting-point glass powder with a softening temperature of 600-1100 DEG C, 0.5 to 1.5 parts of iron sesquioxide, 0.4 to 1 part of diphenylsilanediol and and 0.1 to 0.2 part of SI69-50. The manufacturing method comprises the following steps: firstly, carrying out two-side mixing operation in an open mill, then adding the methyl vinyl silicone rubber 110-3-B and the raw rubber of EPDM Mitsui EPT 4045M, conducting mixing for 2-3 minutes, then sequentially adding other components, carrying out mixing for 7-8 minutes, performing discharging, conducting extruding and granulating on a double-screw granulator, and preforming cooling for separate use.