102 results about "Fused glass" patented technology

The present invention is a method for producing a silica container having a substrate containing gaseous bubbles in its outer peripheral part and an inner layer comprised of a transparent silica glass formed on an inner surface of the substrate, wherein a powdered raw material for forming a substrate containing Li, Na, and K with the total concentration of 50 or less ppm by weight and a powdered raw material for forming an inner layer containing Ca, Sr, and Ba with the total concentration of 50 to 2000 ppm by weight are prepared; a preliminarily molded substrate is formed in a frame; a preliminarily molded inner layer is formed on an inner surface of the preliminarily molded substrate; and the preliminarily molded substrate and molded inner layer are heated from inside thereof by a discharge-heat melting method under a gas atmosphere containing a hydrogen gas or a helium gas or a gas mixture thereof with the ratio of more than 10% by volume thereby making an outer peripheral part of the preliminarily molded substrate to a sintered body and an inner peripheral part of the preliminarily molded substrate and the preliminarily molded inner layer to a fused glass body. With this, a method for producing a silica container, producible with a low cost and having a high durability and dimensional precision, and a container of this sort can be provided.

The invention relates to a kind of microcrystalline glass and a preparation method thereof. The preparation raw materials include 10-90wt% of iron, vanadium and titanium-containing tailings, 5-50wt% of fluorite tailings, 1-50wt% of dolomite and 0-20wt% of soda ash. The preparation method of the microcrystalline glass comprises the following steps: uniformly mixing and fusing raw materials in proportion so as to obtain fused glass fluid; and shaping the fused glass fluid, then cooling the shaped glass fluid, and carrying out heat treatment on the obtained product so as to obtain the microcrystalline glass. The microcrystalline glass provided by the invention can be widely used for manufacturing high wear-resisting, acid and alkali erosion resistant and impact resistant products, and the performance of the microcrystalline glass is far higher than that of cast stone, thereby not only solving the pollution problem of tailings and manufacturing high-technical-content and high value-added products.

This invention relates to lead-free and low-melting-point sealing glass powder doped with rare earth oxides. The sealing glass powder is composed of base glass oxides (V2O5-P2O5-Sb2O3) and mixed rare earth oxides at a weight ratio of 100: (0.0013-10), preferential 100: (0.3-6.0). The mixed rare earth oxides are La2O3, CeO2, Y2O3 and Nd2O3 at a weight ratio of (0.001-5.0): (0.1-10.0): (0.001-8.0): (0.001-6.0). This invention adopts the modification technique by adopting rare earth oxides, thus can reduce the sealing temperature of the glass, save energy, raise productivity, improve chemical stability of the glass, and reduce expansion coefficient of the glass. The glass powder can be used for nontoxic and nonpollutive sealing of electronic elements.

A fused glass crucible includes a collar of doped aluminum silica that defines uppermost and outermost surfaces of the crucible. The melt line that defines the surface of molten silicon in the crucible may be substantially at the lower end of the collar or slightly above it. Crystallization of the collar makes it hard and therefore supports the remaining uncrystallized portion of the crucible above the melt line. The melt line may also be below the lower end of the collar, especially if the melt is drawn down or poured early in the process. Because there is little or no overlap or because the overlap does not last long, the doped aluminum collar is not damaged by the heat of from the melt.

The invention discloses a temperature evening device and method in the glass moulding course, which comprises the following parts: moulding bulk to overflow fusing glass, heating moulding space with top heating element and lateral heating element, insulating part on the exterior of top heating element and lateral wall heating element, board-shaped temperature evening device on the periphery between overflow glass liquid moulding bulk and heating element, wherein the board-shaped temperature evening device gathers glass fusing heat to heat glass at face irradiation pattern, which makes glass flow obtain even temperature; the distance between board-shaped temperature evening device and fusing glass and relative position of back heating element are adjusted to control temperature of fusing glass temperature.

The invention relates to a method of adhering sensor chips and in particular to a method of adhering sensor chips on metal membranes through a glass micro-fusion method. The method comprises the steps of: firstly preparing a metal pedestal and a sensor chip, wherein a sealing bottom used for forming a metal membrane is arranged on one end of the metal pedestal, and an end port is reserved on the other end of the metal pedestal, the sensor chip comprises a silicon chip, four foil gauges are integrated on the silicon chip, and the four foil gauges are connected to a Wheatstone bridge through metallization deposition; and then, processing the outer surface of the metal membrane to a rough surface; printing glass powder on the rough surface; putting the metal pedestal with the glass powder in a tubular furnace with temperature of 450-550 DEG C for heating, putting the sensor chip on the glass powder when the glass powder on the metal membrane is at a semi-fusion state, and continuing to heat to embed the sensor chip in the fused glass solution; and finally, stopping heating and naturally cooling the sensor chip.

The disclosed Ga-Ge-Bi-Pb fluorescent glass material doped with rare earth is prepared by: mixing and fusing the Ga2O3, Bi2O3, GeO2, lead-contained compound and rare earth compound to obtain the fused glass liquor; clearing and pouring the liquor into the mold to obtain the glass; putting the glass rapidly into a muffle furnace with temperature as the glass transformation temperature for heat preservation; finally, cooling to room temperature. This product can be manufactured into different shape, and has wide application as the gain medium.

The invention provides a glass reagent for preparing glass fuse pieces used for metallurgical flux X-ray fluorescence analysis, consisting of anhydrous lithium tetraborate or mixture of anhydrous lithium tetraborate and lithium metaborate, and boric acid. A method for preparing the glass fuse pieces includes: firstly adding the anhydrous lithium tetraborate or the mixture of anhydrous lithium tetraborate and lithium metaborate in the metallurgical flux, then fusing at a high temperature for 12-15mins in a platinum yellow pot, preparing the glass fuse pieces after cooling; or fully mixing the boric acid with the anhydrous lithium tetraborate or the mixture of the anhydrous lithium tetraborate and lithium metaborate in advance, preparing the fast fused glass reagent and then mixing with the metallurgical flux, then fusing at the high temperature for 12-15mins in the platinum yellow pot, and preparing the glass fuse pieces after cooling. The glass reagent has accurate and stable analysis results, and greatly shortens the analysis period of the metallurgical fusing agent.

The invention relates to silicate material field used in repair and substitution for bone and tooth. Wherein, mixing materials with weight share in alumina ball mill tank; putting into alumina crucible, hot smelting in silicomolybdic bar furnace; pouring fused glass into water for quenching, drying and smashing; remelting the glass powder to cast in graphite mould at 500-700Deg for one hour; cooling to room temperature and obtaining even glass parent body; heating to 800-110Deg for 4-24h to separate controlled glass ceramic contained fluorine bronze mica and fluorapatite. The product has bending strength and elastic modulus fit to mechanical property of bone and teeth of human body, and can generate strong chemical bond with human bone group. This invention is simple and convenient to operate.

A in-situ deep overcold process for preparing the oriented alloy material includes such steps as using HF induction heater and the combination of fused glass protection with cyclic overheat to make the Ni-Fe-Ga, Co-Ni-Ga, or Fe-Ga alloy in overcold state, heating the alloy to the soft point of quartz tube, and flowing the alloy from the first quartz tube to the second one whose bottom is in contact with molten Ga-In alloy.

Coordinated preforms made of COE (coefficient of expansion) compatible glass are shaped for making predictable decorative patterns in fused glass. When color design preforms 40, 50, 60 are positioned using the indentations 11, 31 in base sheet preforms 10, 20, 30 they will deform into predictable mosaic patterns when the arrangement is fused together.

Provided is a glass fiber cotton felt used for sound insulation and heat insulation. The glass fiber cotton felt used for sound insulation and heat insulation is characterized in that the glass fiber cotton felt is made by the following method: fusing glass blocks to clear glass melt through a kiln, through primary drawing and flame injection, obtaining glass wool, through spraying an adhesive, the glass wool bonding to form a felt, and finally curing through a curing oven. Average fiber diameter of the glass fiber cotton felt is 0.5-3.5 [mu]m, volume-weight is 6.5-20.5 kg/m<3>, gum content is 1-25%, 1000 Hz sound transmission loss is 5.2-11.4 dB, heat conductivity coefficient is 0.020-0.045 W/(m.K), and air permeability is 250-715 mm/s. The invention also discloses a manufacturing method for the glass fiber cotton felt used for sound insulation and heat insulation. The method comprises the following steps: (1) feeding in materials; (2) performing primary drawing; (3) performing secondary drawing; (3) collecting cotton and spraying adhesive; (5) curing and drying; (6) trimming and rolling cotton. Beneficial effects of the glass fiber cotton felt are that 1, the sound insulation and heat insulation performance are excellent; 2, quality is stable and cotton felt uniformity is good; 3, the cotton felt is light and high in strength.

The invention provides a Ni-W-nanometer CeF3 composite plating used on the surface of a glass die. The composite plate has a Ni-W basal body interlarded with nanometer CeF3 micro-particles. The invention also provides a method for electroplating the Ni-W-nanometer CeF3 composite plating onto the surface of the glass dire and the electrolyte thereof. Na tungstates and Ni sulphamates are taken as the main salts of the electrolyte; nanometer CeF3 powder is added to form the bath; and the Ni-W-nanometer CeF3 composite plating is obtained through controlling the content of the Na tungstates, the Ni sulphamates and the CeF3, the variety and content of codeposition promoters, the pH value and the current density, and stirring the bath. The composite plating has a simple process, little pollution, safety, low overall cost, high plating hardness, corrosion resistance, wear resistance and high temperature resistance, and good self lubrication performance. When the Ni-W-nanometer CeF3 composite plating is ground with fused glass, the Ni-W-nanometer CeF3 composite plating has a lower frictional coefficient, thereby bringing about good demoldability of the die.

The invention discloses a technological method for preparing LTCC amorphous glass ceramic powder with a microwave plasma torch. The technological method comprises the following steps: mixing raw materials of glass, ball milling, drying, and granulating into particles with diameters of 1-3mm, and sintering into ceramic balls at 650-850DEG C; and rapidly fusing the hot ceramic balls into glass droplets through the microwave plasma torch with the temperature of 3000-5000DEG C, falling into deionized water, chilling to obtain an amorphous glass ceramic material with the particle size of 15-500mum, carrying out wet ball milling, and drying to a product the LTCC amorphous glass ceramic powder. According to the invention, methods for fusing glass with platinum and ceramic crucibles in traditional technologies are abandoned, and the glass droplets are in a suspending state in the process of fusing with the microwave plasma torch and do not contact with any vessels, so the technological methodof the invention which has the advantages of guarantee of the glass purity, convenient operation, uniform glass chilling, obvious effect better than the traditional technologies, good product consistency, and good economy is in favor of the large scale production.

The invention provides a production process of colorfully-painted and back-engraved crystal glass. The production process is realized by sequential steps of prefabricating a colorfully-painted pattern mould, mixing and agitating, drying material powder, granulating, heating and fusing, dropping materials into the mould, cooling and de-molding, annealing, carrying out cold machining and the like. According to the production process, a laser precision engraving machine is used for engraving patterns on a metal mould; then fused glass liquid is processed by the process of dropping the materials into the mould, cooling and de-molding, and annealing to obtain a semi-finished product; and then, the cold machining is carried out and manners of back engraving, circular engraving, floating engraving and the like are utilized to machine back loss of a product and fuzzy pattern details in a previous production process to enable to the patterns to be vivid. When paint is used for gradually coloring the product layer by layer, an outer layer needs to be colored under the precondition that the inner layer is completely dried. After the coloring is finished, the product is dried to guarantee the durability of colorfully-painted colors. Compared with an existing product, the product prepared by the production process disclosed by the invention has the characteristics of long preservation time, bright pattern colors and capability of vividly presenting three-dimensional patterns.

The present invention relates to a 3D printer printhead, a 3D printer using the same, a method for manufacturing a molded product by using the 3D printer, a method for manufacturing an artificial tooth by using the 3D printer, and a method for manufacturing a machinable glass ceramic molded product by using the 3D printer, the 3D printer printhead comprising: an inlet through which glass wire, which is a raw material, is introduced; a heating means for heating the glass wire introduced through the inlet; a melting furnace for providing a space in which the glass wire is fused; and a nozzle connected to the lower part of the melting furnace so as to temporarily store the fused glass or discharge a targeted amount of the fused glass, wherein the melting furnace includes an exterior frame made from a heat resistant material and an interior frame having a crucible shape, and the interior frame is made from platinum (Pt), a Pt alloy or graphite, which have a low contact angle, or a material having a surface coated with Pt or a diamond-like carbon (DLC) so as to prevent the fused glass from sticking thereto. According to the present invention, the molded product, the artificial tooth, and the machinable glass ceramic molded product can be manufactured with excellent mechanical properties, thermal durability, chemical durability and oxidation resistance and outstanding texture by using the glass wire as a raw material.

A process for preparing orientated Ni-Pb alloy difficult to mix and dissolve mutural by deep over-cold features that the HF induction heater isused, and the fused glass cleaning and cyclic over-heat are combined to obtain the over-cold (77-110 deg.K). Its advantages are easy control, no need of vacuum environment, and less loss of Pb.

The invention provides a low-melting glass powder of crystalline silicon solar energy battery front side silver paste, and the powder is processed from the following substances in percentage by weight: 30-60% of PbO, 10-30% of B2O3, 5-30% of ZnO, 5-14% of SiO2, 0.5-2% of Li2O, 0.5-2% of Ag2O, 1-5% of MgO and 1-10% of ZrO. The preparation method comprises the following steps: 1. weighing materials, and uniformly mixing the materials in a ceramic mortar; 2. pouring the mixed powder into a corundum crucible, covering the crucible with a cover, and placing the crucible into a muffle furnace for fusion at an assigned furnace temperature; 3. carrying out water quenching of the fused glass liquid; 4. carrying out a drying; 5. milling and crushing the glass material after water quenching. The prepared glass powder has a suitable softening temperature, and has a good wetting capability for silver and silicon, simultaneously the glass contains silver oxide, and thereby better conveying and precipitating silver crystal grains in the sintering process, obtaining more contact points, improving the generation probability of tunnel effect, and reducing the contact resistor. Because the lead content is low, corrosion to silicon is reduced and possibility for breakdown of PN junction is effectively decreased, and thereby improving photoelectric conversion efficiency and life of solar energy battery in the prerequisite for guarantying the contact resistor.

The invention discloses a fluorescence detection method of the zirconia content in TFT glass. The method comprises: a, finely grinding a glass sample to obtain glass powder; b, mixing the glass powder obtained from the step a with a fusing agent and a releasing agent for fusion sample preparation to obtain a fused glass sheet, wherein the mass ratio of the glass powder to the fusing agent to the releasing agent is 1: (0.5-2): (0.01-0.1), and the fusing agent is a mixture of lithium tetraborate and lithium metaborate with the mass ratio being (1-5): 1; and c, performing fluorescence detection of the fused glass sheet obtained from the step b to obtain the zirconia content in the glass sample. According to the method, the zirconia content in glass can be quickly, accurately, and efficiently measured.

The present invention discloses a preparation method for a ferromolybdenum sample melting glass body. The preparation method comprises the following process steps: preparation of a sample, acid digestion of the sample, preparation of a melting glass body sample, and preparation of a glass body in a shaped crucible by the melting glass body sample. According to the method of the present invention, nitric acid is adopted to digest the ferromolybdenum sample; a treatment of low temperature drying is performed; regents of lithium tetraborate and ammonium iodide are added, the melting glass body is prepared at the high temperature of 1100 DEG C by high temperature melting. According to the present invention, a new melting sample preparing approach is provided for the ferromolybdenum synthesis by the X-ray spectrometry; the difficulties in the ferromolybdenum melting glass body preparation in the prior art are solved; the method of the present invention has characteristics of convenient operation, rapidness, easy control; with the method, the platinum crucible is not damaged, the service life and the use period of the platinum crucible are prolonged, the cost for repeatedly repairing the crucible is saved; the formed ferromolybdenum melting glass body is bright and transparent, meets the requirements of the detection by the XRF method, and has a strong application prospect.