7 results about "Melting temperature" patented technology

The present invention relates to an apparatus and method for growing a high melting point single crystal having a predetermined orientation, which is grown from a culture rod (3) by a floating zone method or a suspension zone method. The device comprises: culture rods (3) and crystal nuclei (4), a strip-shaped resistance heating type heating strip (6) provided with at least one opening is installed between its ends and next to it, and it is heated To the crystal melting temperature, so as to form the melting zone (5), drive mechanism (8, 11), so that relative movement occurs between the heating belt (6) and the crystal nucleus (4) and the culture rod (3) that are installed next to the heating belt , the molten liquid material of the culture rod (3) is obtained through each opening of the heating belt, and causes single crystal growth on the crystal nucleus (4) by cooling, and another heating device (15, 16), which is arranged at the melting The vicinity of the zone (5) in order to set the temperature gradient within the range of the melting zone (5). In order to reduce the temperature gradient in the melting zone, said further heating device (15, 16) comprises at least one heating coil (17, 19), which is driven with radio frequency, wherein the heating strip (6) and the respective heating coil are thus mounted opposite each other (17, 19) so that radio frequency radiation is coupled on the heating strip in order to generate an additional inductive heat input in the heating strip and to set a temperature gradient across the melting zone (5). This enables an inductive heat input into the heating strip, which can be varied or varied in a targeted manner.

The invention discloses a high-purity titanium ingot purification method. The method comprises the steps of preparation of materials, loading of the materials into a furnace and electron beam melting.An electron beam furnace is adopted for melting, the temperature is raised to start electron beam smelting when the vacuum degree of a hearth of the electron beam melting furnace is maintain to be higher than or equal to 2.0*10<-2> pa, the melting temperature is controlled to be higher than or equal to 2350 DEG C, the melting speed is controlled to be higher than or equal to 25 kg/h, a titanium strip is fully melted, and a titanium ingot formed after electron beam melting is cooled in the hearth and then discharged out from the furnace. The content of iron, silicon, carbon and other impurityelements is effectively reduced, correspondingly the high-purity titanium ingot is obtained, and high-purity metallic titanium has no pores and no impurities.

A process for forming a thermal barrier coating system on a substrate is disclosed including preparing a slurry including a donor powder, an activator powder, and a binder. The donor powder includes a metallic aluminum alloy having a melting temperature higher than aluminum, and the binder includes at least one organic polymer gel. The process further includes applying the slurry to the substrate, heating the slurry to form an aluminide bond coating including an additive aluminide layer and an aluminide interdiffusion zone disposed between the substrate and the additive aluminide layer, and applying a thermal barrier coating to the aluminide bond coating. The thermal barrier coating may be a dense vertically-cracked thermal barrier coating, and the substrate may be a gas turbine component. Thermal barrier coating systems formed by the process are also disclosed.

The invention provides a polypropylene thin film and a preparation method thereof. The thin film comprises a polypropylene core layer and a smooth surface layer adhered to at least one side surface of the polypropylene core layer. The smooth surface layer is a polypropylene layer with dispersed self-lubricating micro-particles. Fusion index of the polypropylene in the polypropylene core layer and the smooth surface layer under 230 DEG C and 2.16Kg are higher than 5g/10min and lower than or equal to 20g/10min. The self-lubricating micro-particles are high-molecular micro-particles with melting temperature higher than or equal to 250 DEG C and with both static friction coefficient and dynamic friction coefficient smaller than or equal to 0.6. The polypropylene thin film provided by the invention has excellent smooth performance, optical performance, and mechanical performance.

A method of manufacturing a fuse includes stacking a base plate, an at least partially conductive fabric over the base plate and a cover layer over the fabric, each with an intervening bonding layer. At least one cavity is provided on both sides of the fabric, adjoining the fabric, between the respective edge regions. In addition, the fabric includes at least one first fiber which is electrically conductive and second fibers which are non-conductive and which have a lower melting temperature than the first fiber. The method further includes heating the stacked elements to a temperature below the melting temperature of the first fiber and above the melting temperature of the second fibers.

Provided is an ash melting temperature estimation device capable of quickly estimating the melting temperature of ash generated by combustion of a plurality of types of fuel. The device is provided with: a theoretical ash composition calculation unit which is provided with a mixing ratio acquisition unit for acquiring the mixing ratio of a plurality of types of fuel included in a target fuel, a fuel-corresponding ash composition acquisition unit that acquires a plurality of fuel-corresponding ash compositions comprising ash compositions of each of a plurality of types of fuel included in the target fuel, and a calculation unit that calculates a theoretical ash composition, which is an ash composition relating to a specific ash content of ash when the plurality of types of fuel are mixed atthe mixing ratio, on the basis of the mixing ratio and the plurality of types of fuel-corresponding ash compositions; an estimation model creation unit that creates an estimation model in which a relationship between a reference ash composition and a reference melting temperature for reference ash generated by combustion of the reference fuel is learned; and a melting temperature calculation unitthat uses the estimation model to calculate an estimated value of the melting temperature of the ash of the target fuel corresponding to the theoretical ash composition.

The invention relates to a multifunctional self-propelled hot melt line-marking vehicle belonging to the field of construction machinery vehicles, which not only has functions of marking ordinary road marking lines and different types of raised vibration road marking lines, but also can automatically control the running of the whole vehicle, the melting temperature of paint and the marking lines.Compared with the prior art, the multifunctional self-propelled hot melt line-marking vehicle greatly enhances the automation degree and the work efficiency, reduces the labor intensity, ensures the operation quality and also reduces the construction cost. The invention fills the blank of the multifunctional self-propelled hot melt line-marking vehicle in china.