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

The invention discloses a preparation method of far infrared ceramic tile. The preparation method of the far infrared ceramic tile comprises the following steps: forming and drying a body; applying afar infrared ground coat on the surface of the dried body, drying; applying a far infrared cover coat on the surface of the dried far infrared ground coat, and drying; 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 ground coat comprises the components of aluminum oxide, silicon dioxide, calcium oxide, potassium oxide, magnesium oxide, barium oxide and a far infrared additive; thefar infrared cover coat comprises the components of aluminum oxide, silicon dioxide, calcium oxide, potassium oxide, magnesium oxide, barium oxide, sodium oxide and the far infrared additive; the farinfrared additive comprises the components of kaolin, feldspar, quartz, nano-tourmaline, zirconium carbide and zirconium dioxide. Due to the technical scheme, the ceramic tile has the function of transmitting far infrared rays.

The invention discloses a far infrared ceramic tile. The far infrared ceramic tile comprises a green body layer, a far infrared ground coat layer and a far infrared cover coat layer which are sequentially stacked; the far infrared ground coat layer comprises the components of aluminum oxide, silicon dioxide, calcium oxide, potassium oxide, magnesium oxide, barium oxide and a far infrared additive;the far infrared cover coat layer comprises the components of aluminum oxide, silicon dioxide, calcium oxide, potassium oxide, magnesium oxide, barium oxide and the far infrared additive; the far infrared additive comprises the components of kaolin, feldspar, quartz, nano-tourmaline, zirconium carbide and zirconium dioxide. Due to the technical scheme, the ceramic tile has the function of transmitting far infrared rays.

The invention discloses a low-oxidizability continuous casting covering slag comprising the following chemical components in percentage by weight: 15-25% of CaO, 20-35% of Al2O3, 10-20% of SiO2, 2-5% of Li2O+K2O, 2-10% of B2O3, F<=10%, Na2O<=10%, 5-15% of MgO+BaO+SrO, and the balance of carbon and inevitable impurities. Furthermore, the hemispheric point temperature of the continuous casting covering slag is controlled within a range from 1000 DEG C to 1200 DEG C, and the viscosity is controlled within a range from 0.2 pa. s to 0.6 pa. s. Practices show that the low-oxidizability continuous casting covering slag has good combination property and meets the requirements of continuous casting processes of steel types, i.e. TRIP (Transformation-Induced Plasticity) steel with high-content oxidizable elements i.e. Al, Ti or rare earth, and the like, silicon steel, container steel, and the like and realize the multi-furnace continuous casting.

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 belongs to the technical field of material science, and particularly relates to Yb-sensitized environment-friendly germanium tellurite luminescent glass and a preparation method of the luminescent glass. The glass is prepared from the following raw materials: GeO2, a Mo-V-Te-Nb-O catalyst waste material, Na2O, BaF2, YbF3 or Yb2O3, and MF3 or M2O3, wherein the M is a rare-earth light-emitting ion. According to the invention, the Mo-V-Te-Nb-O catalyst waste material is used for replacing tellurium oxide, and the problem that the mechanical property of the germanium tellurite glassis reduced due to the tellurium oxide can be effectively improved while the melting temperature is reduced. Good visible, near-infrared and mid-infrared fluorescent lights can be obtained by using theobtained rare-earth-doped environment-friendly germanium tellurite glass under the pumping of a laser diode with a wavelength of 980 nm, and meanwhile, the physical and chemical properties are excellent, the thermal stability is good, the parameter delta T is larger than or equal to 170 DEG C, and the Vickers hardness of the glass is larger than 680 kgf / mm<2>.

The invention provides a flux for aluminum and aluminum alloy melt refining as well as an aluminum and aluminum alloy melt refining method, and relates to the technical field of aluminum and aluminum alloy melt treatment. The flux comprises a first flux body which comprises the following components in percentage by mass: 10-20% of an alkali metal fluoroaluminate, 20-40% of an alkali metal chloride, 20-40% of an alkali metal carbonate, 5-10% of an alkali metal fluoroborate and 10-20% of a halide used for removing alkali metal, wherein the alkali metal chloride comprises NaCl and / or KCl; the alkali metal carbonate comprises Na2CO3 and / or K2CO3; the alkali metal fluoroborate comprises NaBF4 and / or KBF4; and the alkali metal halide comprises MgCl2 and / or AlF3. According to the aluminum and aluminum alloy melt refining method provided by the invention, the above flux is sprayed into an aluminum and aluminum alloy melt by adopting N2 as a carrier; and the flux can adsorb and dissolve alumina inclusions of the aluminum and aluminum alloy melt, and refine crystal grains.

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 of forming a blank, and drying; applying bottom glaze to the surface of the dried blank, and sintering the blank after applying of bottom glaze for 30 to 45min at the temperature of 1200 to 1280 DEG C, so as to obtain a plain blank; applying far-infrared surface glaze to the surface of the plain blank, and sintering the blank after applying of far-infrared surface glaze for 60 to 110min at the temperature of 600 to 1120 DEG C, 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 surface glaze comprises the following components of aluminum oxide, silicon oxide, calcium oxide, potassium oxide, magnesium oxide, barium oxide, sodium oxide,and the far-infrared additive; the far-infrared additive comprises the following components of kaolin, feldspar, quartz, nanometer tourmaline, zirconium carbide, and zirconium dioxide. By adopting the technical scheme, the prepared far-infrared ceramic tile is characterized in that the far-infrared ray transmission function is realized.

The invention relates to a chrome-containing glass component. The glass component comprises the following ingredients in percentage by weight: 70.5-71.8% of SiO2, 7.4-8.0% of CaO, 4.0-4.6% of MgO, 0.1-0.14% of Fe2O3, 0.8-1.0% of Al2O3, 4.6-5.0% of Li2O, 0.07-0.08% of K2O, 9.9-9.94% of Na2O, 0.43-0.47% of PbO and 0.10-0.35% of Cr2O. The chrome-containing glass component comprises the following raw materials, namely, silica sand, dolomite, limestone, albite, lithium carbonate, sodium nitrate, lead nitrate and potassium dichromate. The chrome-containing glass component which is prepared according to the formula is bright and sparkling in appearance, and is particularly applicable to manufacturing of jadeite imitations.

The invention relates to a chrome-containing glass component. The glass component comprises the following ingredients in percentage by weight: 70.5-71.8% of SiO2, 7.4-8.0% of CaO, 4.0-4.6% of MgO, 0.1-0.14% of Fe2O3, 0.8-1.0% of Al2O3, 4.6-5.0% of Li2O, 0.07-0.08% of K2O, 9.9-9.94% of Na2O, 0.43-0.47% of PbO and 0.10-0.35% of Cr2O. The chrome-containing glass component comprises the following raw materials, namely, silica sand, dolomite, limestone, albite, lithium carbonate, sodium nitrate, lead nitrate and potassium dichromate. The chrome-containing glass component which is prepared according to the formula is bright and sparkling in appearance, and is particularly applicable to manufacturing of jadeite imitations.

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 discloses a preparation method of foam glass, relating to the technical field of building materials. The preparation method adopts the following raw materials in parts by weight: cathode-ray tube, pearlite, calcium carbonate, mirabilite, foaming accelerant, foam stabilizer and borax. The preparation method comprises the following steps: A, separating a glass shell of the cathode-ray tube; B, mixing the glass shell, the perlite, the calcium carbonate, the mirabilite and the borax to obtain a mixture, and grinding the mixture in a ball mill to obtain powder; C, filtering the powder by virtue of a screen; D, uniformly mixing the powder, the foaming accelerant and the foam stabilizer, and placing the mixture into a mold; E, placing the mold into a kiln, and preheating; F, after the preheating is ended, heating the kiln; and G, annealing the kiln, and taking out the mold after the annealing. Compared with the prior art, the problem of environmental pollution caused by the abandoned waste cathode-ray tube can be solved.

The invention belongs to the technical field of material science and in particular relates to Nd-sensitized environmental-friendly germanium tellurite luminescent glass and a preparation method thereof. The glass is prepared from the following raw material components: GeO2, Mo-V-Te-Nb-O catalyst waste, Na2O, BaF2, NdF3 or Nd2O3, and MF3 or M2O3, wherein M refers to a rare earth luminescent ion. The tellurium oxide is replaced with the Mo-V-Te-Nb-O catalyst waste, and the problem that the mechanical property of germanium tellurite is reduced by tellurium oxide can be effectively improved when the melting temperature is reduced, so that the obtained rare-earth doped environmental-friendly germanium tellurite glass can obtain good visible, near-infrared and mid-infrared fluorescence under laser diode pumping with the wavelength of 808nm. Meanwhile, the physical and chemical properties are excellent, the thermal stability is high, the parameter Delta T is more than or equal to 170 DEG C, and the Vickers hardness of the glass is more than 680 kgf / mm<2>.

The invention discloses a manganese-zinc ferrite magnetic core with high saturation magnetic flux density and a preparation method thereof, belonging to the technical field of magnetic materials. Thepreparation method of the manganese-zinc ferrite magnetic core adopts manganese powder, zinc oxide powder, silicon dioxide, calcium oxide, vanadium pentoxide and ferrous powder as raw materials. The preparation method comprises the steps of: performing synthetic reaction on manganese powder, zinc oxide powder and ferrous powder with hydrochloric acid and liquid ammonia in sequence; and performingpresintering, doping and ball milling, press forming, sintering treatment and air gap cutting treatment to obtain a manganese-zinc ferrite magnetic core. According to the invention, ferrous powder, manganese powder, zinc oxide powder and the like are used as initial raw materials, and the ferrous powder, the manganese powder and the zinc oxide powder are subjected to synthetic reaction and pre-sintering treatment with hydrochloric acid and liquid ammonia in sequence, so that ferric oxide, manganese oxide and zinc oxide with less impurity content can be obtained, and the subsequent sintering treatment can enable the physicochemical reaction of each component to be uniform, thereby achieving the purposes of reducing the porosity of the magnetic core, improving the density of the magnetic core and improving the saturation magnetic flux density.