31results about How to "Play a role in melting" patented technology

The invention discloses continuous casting crystallizer mold powder of a sheet billet at a high casting speed. The mold powder comprises chemical components in percentage by weight as follows: 34%-44% of CaO, 2%-8% of Al2O3, 20%-30% of SiO2, 1%-9% of MgO, 5%-15% of F, smaller than or equal to 6.5% of Na2O, smaller than or equal to 5% of K2O, smaller than or equal to 6% of Li2O and the balance of carbon and uncontrollable impurities. Content of CaO in the mold powder is high, content of SiO2 in the mold powder is low, accordingly, the degree of purity of molten steel can be improved, simultaneously, MgO and CaO in the mold powder are alkaline earth metal oxides, Li2O, Na2O and K2O are alkali metal oxides, the melting temperature is low, the fluxing effect is achieved, the usage amount of a fluxing agent can be reduced, the probability of various crystal precipitation is reduced, so that the glass performance of the mold powder is improved, and the mold powder has a good lubrication effect at the high casting speed; accurate control on F content meets requirements of surface quality at the high casting speed, and lubrication is improved by means of an appropriate amount of Al2O3; and the mold powder can meet technological requirements of continuous casting of medium carbon steel such as SS400, Q345 and the like, moreover, the mold powder components have stable performance, and sequence casting can be realized.

The invention provides a preparation method for a doped and modified spinel-type lithium manganite cathode material, which comprises the following steps of: mixing a lithium source compound, a manganese source compound, doped metal salt with a roasting accelerator to obtain a mixture; then, roasting the mixture to obtain metal element-doped spinel-type lithium manganite, wherein the roasting accelerator comprises one or more than one of acetylene black, active carbon powder, coke powder and charcoal powder. The preparation method provided by the invention is low in roasting temperature and is short in roasting time, and meanwhile, the obtained doped and modified spinel-type lithium manganite is stable in product quality and is uniform in performance.

Disclosed is an alloy element additive used for aluminum alloy production. The alloy element additive is composed of alloy element powder to be added, mgcl2-group fusion powder and an adhesive. The components comprise, by mass, 70%-90% of the alloy element powder, 10%-30% of the mgcl2-group fusion powder and 0-5% of the adhesive. The sum of the mass percents of the three components is 100%. Alloy elements are organically combined with a refining agent, so that the alloy element additive not only has an alloying function, but also has a refining effect. According to the alloy element additive and a preparation method thereof, mgcl2-group fusion serves as a fusing agent, so that not only is the fusing function to the alloy element powder achieved, but also the refining function to aluminum water is achieved, and accordingly the agent is multipurpose indeed. The alloy element additive does not contain toxic substances, thereby being safe and environmentally friendly

The invention relates to wide-spectrum high-absorption-rate black glass and a preparation method and application thereof. The wide-spectrum high-absorption-rate black glass is prepared from the following raw materials in parts by weight: 40 to 60 parts of iron tailings, 5 to 15 parts of silicon dioxide, 2 to 5 parts of sodium carbonate, 5 to 10 parts of magnesium oxide, 10 to 20 parts of aluminum hydroxide, 0.5 to 1 part of sodium hexametaphosphate, 1 to 2 parts of potassium carbonate, 10 to 20 parts of calcium carbonate and 2 to 3 parts of titanium dioxide. The preparation steps include material proportioning, material mixing, high-temperature fusion, forming and annealing. Test results prove that the prepared black glass has the advantages that the folding resistance strength is great, and reaches 100 to 140 Mpa; a high light absorption rate is realized in the wide spectrum range of 250 nm to 2500 nm, and reaches 90 percent or higher; the black glass can be applied to the preparation of solar energy heat absorption materials, building heat insulation energy-saving materials and the like.

The invention discloses microporous foam glass and a preparation method thereof, and relates to the field of glass products. The foam glass is prepared from the following raw materials of crushed glass powder, mordenite zeolite, hyalophane mica, modified quartz powder, kaolin, titanium dioxide, sodium fluoride, reinforced fiber, adhesive, foaming agent and foam stabilizer. The preparation method comprises the following steps: smashing raw materials, melting, cooling, standing, foaming, annealing, foaming and polish. The production raw materials of the foam glass are wide in source, and are simple in a preparation process; the finished product of foam glass contains a large amount uniform, unique and enclosed micropores inside, so that the heat-insulation high temperature and compressive resistance of the foam glass product are improved remarkably, as well as long service life, wide application field and suitability for popularization and application are achieved.

The invention relates to a manufacturing process of high-brightness chromium-containing glass. The manufacturing process comprises the following steps of: (1) taking silica sand, dolomite, limestone, albite, lithium carbonate, sodium nitrate and lead nitrate, mixing, uniformly stirring, then adding potassium dichromate, and then stirring uniformly to obtain glass batch; (2) melting; (3) carrying out secondary crystallization on the glass; and (4) cooling and forming to obtain a glass product. The process method of the chromium-containing glass manufactured by the invention has the advantages that by selection of a reasonable glass material formula and strict control for the heating rate in the melting process, the glass batch can be fully melted, the operation of twice crystallization is adopted, the manufactured chromium-containing glass is high in brightness and looks more sparkling, and the problem of poor brightness of the chromium-containing glass is solved.

The invention discloses a far-infrared ceramic tile. The far-infrared ceramic tile is prepared from a green body layer, a far-infrared ground glaze layer and a far-infrared surface glaze layer which are successively arranged in a stacking manner; the far-infrared ground glaze layer is prepared from the components: aluminum oxide, silicon oxide, calcium oxide, potassium oxide, magnesium oxide, barium oxide, a far-infrared additive, styrene and trisiloxane glycol; the far-infrared surface glaze layer is prepared from the components: aluminum oxide, silicon oxide, calcium oxide, potassium oxide,magnesium oxide, barium oxide, sodium oxide, far-infrared additive, styrene and trisiloxane glycol; and the far-infrared additive is prepared from the components: kaolin, feldspar, quartz, nano tourmaline, zirconium carbide, and zirconium dioxide. The far-infrared ceramic tile has the advantages that the ceramic tile is enabled to have a far-infrared transmitting function.

Alkali-free substrate glass comprises the components in percentage by mass: 58.9% to 62.5% of SiO2, 14.2% to 18.4% of Al2O3, 4.3% to 13.7% of B2O3, 1.4% to 1.9% of MgO, 4.1% to 7.6% of CaO, 1.0% to 2.1% of SrO, 0 to 8.3% of BaO and 0.1% to 0.2% of SnO2. The thinning method comprises the following steps: immersing the alkali-free substrate glass into a chemical etching solution composed of hydrofluoric acid, a glacial acetic acid surfactant and the balance being water, thinning the alkali-free substrate glass to 0.4 mm-0. 5mm, taking out the alkali-free substrate glass, and carrying out ultrasonic cleaning and drying; and placing the alkali-free substrate glass on a grinding disc of a grinding and polishing machine, and carrying out mechanical polishing, thinning the alkali-free substrate glass to 0.3 mm-0.35 mm, and thus obtaining the flexible substrate glass. The alkali-free substrate glass is reasonable in composition, the specific modulus value of the prepared alkali-free glass is moderate, the glass has good flexibility, the thinning method is convenient to operate, the alkali-free substrate glass with the thickness of 0.7 mm is thinned by combining two modes of chemical etching thinning and mechanical polishing thinning, and the flexible substrate glass with smooth surface and bendable performance is obtained.

The invention discloses a preparation method of a far-infrared ceramic tile. The preparation method comprises the following steps of forming a green body and drying; applying a ground glaze on the surface of the dried green body, and drying; applying a far-infrared over glaze on the surface of the dried ground glaze, and drying; firing to obtain a semi-finished product; polishing and edging the semi-finished product to obtain a finished product; performing super cleaning and brightening on the surface of the finished product to obtaining the far-infrared ceramic tile; the components of the far-infrared over glaze comprises aluminum oxide, silicon oxide, calcium oxide, potassium oxide, magnesium oxide, barium oxide, sodium oxide, a far-infrared additive, styrene, and trisiloxane glycol; thecomponents of the far-infrared additive comprises kaolin, feldspar, quartz, nano tourmaline, zirconium carbide, and zirconium dioxide. By adoption of the technical solution of the invention, the ceramic tile has a far-infrared ray emitting function.

The invention discloses a preparation method of a far infrared tile. The method comprises the following steps that green body moulding and drying are conducted; ground glaze is applied on the surfaceof a dried green body, and the green body subjected to ground glaze application is dried; far infrared cover glaze is applied on the surface of the dried ground glaze, and the green body subjected tofar infrared cover glaze application is dried; the green body subjected to ground glaze application and far infrared cover glaze application is fired to obtain a semi-finished product; by means of polishing lines containing resin abrasion blocks and elastic abrasion blocks, the semi-finished product is subjected to polishing and edging to obtain a finished product; pure bright treatment is conducted on the surface of the finished product, and then the far infrared tile is obtained; the far infrared cover glaze is prepared from the components of aluminium oxide, silicon oxide, calcium oxide, potassium oxide, magnesium oxide, barium oxide, sodium oxide and a far infrared additive, and the far infrared additive is prepared from the components of kaolin, feldspar, quartz, nano-tourmaline, zirconium carbide and zirconium dioxide. According to the technical scheme, the tile can have the far infrared ray emitting function.

The invention discloses an instantly soluble hard alloy block and a preparation method and application thereof. The instantly soluble hard alloy block is made from materials in following percent by weight by binding with an adhesive: 25-35% of high carbon ferro-chrome, 0.5-1%. of rare earth, 15-40% of ferro-boron, 25-55% of ferro-vanadium, 2-6% of ferrosilicon, and 2-3% of ferronickel, wherein the adhesive is a resin adhesive. The instantly soluble hard alloy block has high hardness (Rockwell hardness HRC >/=73), good wear resistance, manufacture process simplicity, low cost, low surfacing current, convenience of selecting dimensions and shape, low time and labor consumption for a welder, etc., the problem that a quick-wear apparatus is short in life is solved, and the life of an original member is prolonged by 3-10 times.

The invention discloses a preparation method of a far-infrared ceramic tile. The preparation method comprises the following steps: forming a green body, and drying; applying far-infrared ground glazeonto the surface of the dried green body, sintering, and obtaining a biscuit; applying far-infrared surface glaze onto the surface of the biscuit, sintering, and obtaining a semi-finished product; polishing and trimming the semi-finished product, and obtaining a finished product; and performing the ultra-brightness treatment on the surface of the finished product, thus obtaining the far-infrared ceramic tile. The far-infrared ground glaze is prepared from the components: aluminum oxide, silicon oxide, calcium oxide, magnesium oxide, barium oxide, and a far-infrared additive; the far-infrared surface glaze is prepared from the components: aluminum oxide, silicon oxide, calcium oxide, potassium oxide, magnesium oxide, barium oxide, sodium oxide, and the far-infrared additive; and the far-infrared additive is prepared from the components: kaolin, feldspar, quartz, nano tourmaline, zirconium carbide, and zirconium dioxide. The far-infrared ceramic tile has the advantages that the ceramic tile is enabled to have a far-infrared transmitting function.

The invention relates to the field of steelmaking, and discloses casting powder for a PSB830 steel cast blank and a preparation method of the casting powder. The casting powder is prepared from basisslag, a cosolvent and a melting rate modifier, wherein the basis slag is prepared from CaO and SiO2, the cosolvent is prepared from Al2O3, MgO, F and Na2O; and the melting rate modifier is prepared from C. The problem of cast blank surface indentation defects commonly present in current PSB830 finish-rolled threaded steel is solved.

The invention discloses a preparation method of a far-infrared ceramic tile. The preparation method comprises the following steps of forming a blank, and drying; applying far-infrared bottom glaze tothe surface of the dried blank, and sintering, so as to obtain a biscuit; applying far-infrared surface glaze to the surface of the biscuit, and sintering, so as to obtain a semi-finished product; polishing the semi-finished product, and grinding edges, so as to obtain a finished product; performing super-bright treatment on the surface of the finished product, so as to obtain the far-infrared ceramic tile, wherein the far-infrared bottom glaze comprises the following components of aluminum oxide, silicon oxide, calcium oxide, potassium oxide, magnesium oxide, barium oxide, far-infrared additive, styrene and trisiloxane glycol; the far-infrared surface glaze comprises the following components of aluminum oxide, silicon oxide, calcium oxide, potassium oxide, magnesium oxide, barium oxide, sodium oxide, far-infrared additive, styrene, and trisiloxane glycol. By adopting the technical scheme, the prepared far-infrared ceramic tile has the far-infrared ray transmission function.

The invention discloses a preparation method of a far infrared ceramic tile. The preparation method of the far infrared ceramic tile comprises the following steps: forming and drying a body; applyinga ground coat on the surface of the dried body, and sintering, to obtain a green body; applying a far infrared cover coat on the surface of the green body, and sintering, to obtain a semi-finished product; polishing and edging the semi-finished product to obtain a finished product; conducting super clean and bright treatment on the surface of the finished product, to obtain the far infrared ceramic tile. The far infrared cover coat comprises the components of aluminum oxide, silicon dioxide, calcium oxide, potassium oxide, magnesium oxide, barium oxide, sodium oxide, a far infrared additive, styrene, and trisiloxane ethylene glycol; the far infrared additive comprises the components of kaolin, feldspar, quartz, nano-tourmaline, zirconium carbide, and zirconium dioxide. Due to the technicalscheme, the ceramic tile has the function of transmitting far infrared rays.

The invention discloses a preparation method of a far-infrared ceramic tile. The preparation method comprises the following steps of forming a blank, and drying; applying far-infrared bottom glaze tothe surface of the dried blank, and drying; applying far-infrared surface glaze to the surface of the far-infrared bottom glaze after drying, and drying; firing, so as to obtain a semi-finished product; polishing the semi-finished product, and grinding edges, so as to obtain a finished product; performing super-bright treatment on the surface of the finished product, so as to obtain the far-infrared ceramic tile, wherein the far-infrared bottom glaze comprises is prepared from the following components of aluminum oxide, silicon oxide, calcium oxide, potassium oxide, magnesium oxide, barium oxide, far-infrared additive, styrene and trisiloxane glycol; the far-infrared surface glaze is prepared from the following components of aluminum oxide, silicon oxide, calcium oxide, potassium oxide, magnesium oxide, barium oxide, sodium oxide, far-infrared additive, styrene, and trisiloxane glycol. By adopting the technical scheme, the prepared far-infrared ceramic tile has the far-infrared ray transmission function.