415 results about "Ingot casting" patented technology

The invention belongs to the technical field of aluminum alloy materials, and particularly discloses a preparation method of a cast-rolled 8021 alloy aluminum foil, an 8021 alloy blank with the thickness of 6-8 mm is produced through cast rolling, the blank is subjected to direct homogenizing annealing under the condition of not cooling, is rolled through a cold rolling production process, and then is subjected to edge cutting, secondary intermediate annealing and foil rolling to be subjected to multi-pass rolling to obtain the finished product with the thickness. Compared with a traditional direct-cooling cast ingot hot rolling process, multiple links such as hot-rolled plate ingot casting, ingot blank sawing and face milling, uniform annealing and large-machining-amount hot roughing mill cogging rolling are omitted, energy is saved, consumption is reduced, carbon dioxide emission is reduced, the performance of a finished product is equal to or even superior to that of a hot-rolled product, and the use requirements of customers are met.

The invention provides a manganese-silicon alloy and a production method thereof, and the production method comprises the following steps: respectively crushing a manganese-containing material, silica and coke in proportion, mixing with a dephosphorizing agent, adding a binder and a proper amount of water to prepare a premix, pressing the premix into smelted pellets, and drying; the dried smelting pellets are put into a closed electric furnace to be smelted, and alloy melt is obtained; transferring the alloy melt into a steel ladle, and blowing magnesium powder for desulfurization; the desulfurized alloy melt is subjected to slagging-off, and manganese-silicon alloy molten iron is obtained; and the manganese-silicon alloy molten iron is poured into a mold for ingot casting, and a manganese-silicon alloy finished product is obtained after cooling. According to the method, the raw materials such as the manganese material, the silica, the coke and the dephosphorizing agent are crushed respectively and then mixed, briquetted and smelted, so that the dephosphorizing and desulfurizing effects can be improved, and sulfur in the alloy can be further removed by spraying magnesium powder outside the furnace for desulfurization, so that the quality of the manganese-silicon alloy is improved.

The present invention belongs to the technical field of aluminum alloy materials, and specifically discloses a method for preparing cast-rolled 8021 alloy aluminum foil. The method comprises the following steps: producing an 8021 alloy billet with a thickness of 6-8 mm by casting and rolling; directly homogenizing annealing the billet without cooling; rolling the billet through a cold rolling production process; and then rolling the billet through multiple passes such as trimming, secondary annealing, and foil rolling to obtain the finished product thickness. Compared with the traditional direct-chill ingot hot rolling process, the method omits multiple steps such as hot-rolled plate ingot casting, ingot sawing and milling, uniform annealing, and hot roughing mill opening and rolling with a large processing capacity, thereby saving energy and reducing carbon dioxide emissions. The finished product has performance equivalent to or even better than that of a hot-rolled product, thus meeting customer needs.

The invention discloses a preparation method of a TA11 alloy bar with high creep resistance. The preparation method comprises the following steps: S1, ingot casting preparation: performing VAR smelting on an alloy for three times to obtain a TA11 alloy ingot with components meeting requirements; s2, intermediate billet forging is conducted, specifically, the qualified cast ingot obtained in the S1 is subjected to two-heating-number forging at the temperature higher than the beta phase transformation point temperature, and an intermediate billet is obtained; s3, multi-heating-number circulating forging is conducted, specifically, the TA11 alloy intermediate blank obtained in the S2 is subjected to five-heating-number forging deformation within the range above and below the beta phase transformation point temperature, and an intermediate precision forging blank which is uniform in structure and high in alpha phase content is obtained; and S4, finish forging machining of a finished product bar is conducted, specifically, finish forging machining is conducted on the TA11 alloy intermediate finish forging blank obtained in the S3 at the temperature below the phase transformation point temperature, and the TA11 alloy bar with the high creep resistance is obtained. The TA11 alloy bar prepared through the method is high in alpha-phase content and stable in control, the structure is uniform and consistent, and the high-temperature creep resistance is stably controlled to be smaller than or equal to 0.15%.

The invention discloses a TA4-xB alloy and a preparation method thereof, the content of B in the alloy is 0.01-0.5 wt%, and the balance is Ti and other impurities. The preparation method comprises the following steps: dividing sponge titanium and TiB2 wrapped by pure titanium foil into three equal parts, smelting in three times by adopting a vacuum non-consumable arc smelting furnace to obtain three button ingots, then putting the three button ingots into the smelting furnace for secondary smelting to obtain an alloy ingot, and finally overturning and repeatedly smelting the alloy ingot obtained by cooling after secondary smelting for three times. A TA4-xB alloy cast ingot with uniform components is obtained through smelting, the cast ingot is machined through a cast ingot machine and subjected to forging-free direct rolling to form a plate, the rolling temperature is 940 DEG C, the finish rolling temperature is 880 DEG C, five passes of rolling are conducted, the rolling deformation of the first pass is 50% or above, and the accumulative deformation is 90%. According to the method, a proper amount of B element is added, a TiB phase is generated in the TA4 titanium material, grains are refined, and then the mechanical property of the TA4 titanium material is improved through multi-pass large-deformation rolling. The method is low in process cost, short in flow, good in material comprehensive performance and free of large-scale equipment transformation.

The invention discloses an automatic control method and device for a furnace plug of an aluminum ingot casting holding furnace, the device comprises a holding furnace (11), the holding furnace (11) is connected with an annular distributor through a chute (16), and the annular distributor is connected with a casting mould (15), and the automatic control method is characterized in that after production is started, a furnace mouth of the holding furnace (11) is closed firstly, and after the temperature and the liquid level of molten aluminum in the holding furnace (11) reach the standard, the furnace mouth of the holding furnace (11) is opened; molten aluminum flows into a chute (16), passes through an annular distributor and then enters a casting mold (15); when molten aluminum flows into the annular distributor, the conveying speed of the casting mould (15) is controlled by detecting the liquid level of the molten aluminum, and accurate casting of aluminum ingots is achieved. The opening degree of the furnace plug and the conveying speed of the aluminum ingot casting mold can be adjusted, so that the flow of molten aluminum is stable, and the quality of cast aluminum ingots reaches the standard; in addition, the casting mold conveying speed can be adjusted in time according to liquid level fluctuation, and the situation that molten aluminum overflows or is cut off is avoided.

The invention relates to the field of aluminum alloy ingot casting, in particular to an aluminum alloy ingot casting device facilitating slagging-off. The existing aluminum alloy ingot casting device has the defects that the existing aluminum alloy ingot casting device depends on a worker to fish dross in aluminum alloy liquid by using a dross-off spoon or a dross-off rake, the casting efficiency is low, the dross in the aluminum alloy liquid is difficult to fully fish out, and the quality of subsequently cast aluminum alloy ingots is poorer. An aluminum alloy ingot casting device facilitating slagging-off comprises a bottom frame and the like. The bottom frame is fixedly connected with a frame body, the frame body is rotationally connected with two first transmission assemblies, and the two first transmission assemblies are symmetrically arranged. The dross on the surface of the aluminum alloy liquid in the casting basin is scraped through the dross skimming plate and the two dross scraping plates together, the aluminum alloy ingot casting efficiency is improved, meanwhile, the dross in the aluminum alloy liquid can be more sufficiently scraped, and therefore the quality of the cast aluminum alloy ingot is better.

The invention relates to a crack defect detection method, system, equipment and medium in an alloy slab ingot casting process, and the method comprises the following steps: synchronously collecting acoustic emission signals through at least two acoustic emission sensor arrays arranged along the width direction of a slab ingot; adaptive segmentation processing is carried out on the acoustic emission signals, and comprehensive characteristic parameters are extracted through wavelet packet decomposition and Hilbert transform collaborative analysis; processing the comprehensive characteristic parameters based on a pre-trained multi-modal deep forest model to obtain crack category information; and configuring a propagation path weight coefficient corresponding to the category for the identified crack feature information, and outputting crack defect characterization information by combining anisotropic correction of sound wave propagation in the slab ingot according to a time difference and a spatial geometrical relationship when an acoustic emission signal reaches each sensor array. Therefore, through a multi-dimensional perception and intelligent analysis cooperation mechanism, all-directional monitoring and accurate characterization of crack defects in the slab ingot solidification process are achieved.

The invention relates to multi-workpiece production scheduling and scheduling optimization in the field of industrial production, in particular to an order delivery time workshop task scheduling method based on an improved sled dog optimization algorithm, which comprises the following steps: constructing a multi-target scheduling model of an aluminum ingot casting workshop; based on the multi-target scheduling model, improving initialization of a sled dog algorithm to obtain an initial population; performing sled dog group iteration updating according to the initial population by using a grey wolf algorithm to obtain an optimized population; carrying out discretization coding on the optimized population, and solving a scheduling scheme to obtain a scheduling scheme candidate solution; retaining an optimal scheduling scheme candidate solution as a final scheduling scheme through multi-round iteration and screening; and performing task scheduling of the aluminum ingot casting workshop based on the final scheduling scheme. According to the method, the total production cost is reduced, the idle and switching frequency of equipment is reduced, the default rate of the order delivery time can be strictly controlled, and the overall production efficiency of a workshop is remarkably improved.

The invention provides a low-sulfur manganese-silicon alloy and a production method thereof.The method comprises the steps that silica, coke and manganese ore are crushed and then mixed with lime, and smelting raw materials are obtained; a closed electric furnace is filled with smelting raw materials for smelting, and alloy melt is obtained; the alloy melt is transferred into a ladle, a desulfurizing agent is added for the desulfurization process, and manganese-silicon alloy molten iron is obtained; and the manganese-silicon alloy molten iron is poured into a mold for ingot casting, and a manganese-silicon alloy finished product is obtained after cooling. According to the method, the method capable of effectively reducing the sulfur content in the manganese-silicon alloy is provided through the steps of raw material crushing and mixing, in-furnace power transmission refining, out-of-furnace desulfurization, casting molding and the like, the low-sulfur manganese-silicon alloy is produced, and therefore control over the sulfur element content in a steelmaking product is facilitated.

The invention discloses a preparation method of a martensitic stainless steel medium plate. The stainless steel comprises the following chemical elements in percentage: 0.21-0.28% of C; 0.15% to 0.30% of Si; 0.50% to 0.80% of Mn; less than or equal to 0.020% of P; s < = 0.005%; cr: 13.00% to 14.00%; 0.20% to 0.30% of Mo; 0.60% to 0.80% of Ni; the Cu accounts for 0.20%-0.25%, the V accounts for 0.10%-0.20%, and the Nb accounts for 0.03%-0.08%; 0.080% to 0.12% of N; and the balance of Fe and inevitable impurities. The preparation method comprises the steps that molten steel is smelted, steel ingot pouring is conducted, the steel ingot cast into an electrode blank is subjected to double-slag-system electroslag remelting under the protective atmosphere, and a slag system for the first time of electroslag remelting comprises a CaF2-Al2O3-CaO-MgO quaternary slag system with the proportion being 40%: 25%: 30%: 5%; a slag system for secondary electroslag remelting comprises a five-membered slag system of CaF2-Al2O3-CaO-MgO-SiO2 with the proportion of 40%: 30%: 23%: 5%: 2%, and the processes of forging cogging, blank hot rolling, cooling, low-temperature normalizing and spheroidizing annealing heat treatment are carried out. The martensitic stainless steel prepared through the method has the characteristics of being good in corrosion resistance, high in heat treatment hardness, uniform in structure and stable in performance.

The invention provides a preparation method of a titanium alloy plate with high structure uniformity. The preparation method comprises the following steps that S1, a plate blank is designed; s2, calculating raw materials required by the cast ingot according to plate blank parameters, mixing the raw materials, pressing the mixed raw materials into a plurality of electrode blocks, welding the electrode blocks into a whole-circle electrode, and finally smelting to prepare the titanium alloy cast ingot; s3, the titanium alloy cast ingot is forged, and a plate blank is obtained; s4, the plate blank is subjected to primary fire rolling, and a semi-finished plate is obtained; s5, the semi-finished plate is subjected to blanking and crack polishing; s6, the semi-finished plate is subjected to secondary heating rolling; and S7, the semi-finished plate is subjected to annealing, blanking and surface treatment, and a finished plate is obtained. According to the method, a multi-time reversing strategy of first-fire transverse broadening, reversing longitudinal rolling, blanking reversing, second-fire transverse broadening to the target width and reversing rolling to the target thickness is adopted, and a uniform plate structure is obtained through multi-time reversing rolling.

The invention relates to the technical field of rare earth permanent magnet materials, in particular to a preparation process of a core-shell structure enhanced neodymium iron boron magnet. Through a multi-component composite formula of high-abundance rare earth and a small amount of heavy rare earth and in combination with a magnesium interface catalytic pretreatment and grain boundary diffusion technology, a Dy-rich shell layer is formed on the surface of a main phase grain, a core-shell structure is constructed, and the coercivity and the high-temperature stability are remarkably improved. An integrated continuous production technology is adopted in the preparation process and comprises the steps of vacuum melting, continuous ingot casting, jet milling, magnetic field forming and continuous sintering, laser-electrochemical integrated machining is integrated, and high-precision cutting and surface corrosion prevention are achieved. The invention further relates to special equipment, such as a multi-zone intelligent temperature control vacuum sintering furnace and double-shaft stirring-composite magnetic field powder equipment, so that the temperature uniformity and the powder orientation degree are ensured. According to the process, heavy rare earth dependence is reduced, the coercive force reaches 24 kOe or above, the high-temperature magnetic performance attenuation is smaller than or equal to 5%, the production cost is reduced, the efficiency is improved, and the process is suitable for the fields of motors, electronics and the like.

The present application relates to a kind of rack steel layered casting composite flux and its preparation, method for using, the component and content of composite flux are as follows: high-purity iron powder: 40%~50%, high-purity rare earth powder: 20%~30%, analytical pure sodium pyrovanadate: 20%~40%.Using layered casting process of composite flux with rack steel, the macrosegregation and shrinkage cavity defects of large rack steel ingot can be significantly improved, which provides a simple, feasible and effective way to improve the composition homogenization degree of ingot, helps to improve the overall quality of rack steel ingot, also shortens the production cycle and improves the production efficiency, thereby improves the production capacity of large rack steel ingot, reduces the production energy consumption and production cost;The present application has important significance for breaking through the bottleneck of high homogenization large rack steel ingot manufacturing, laying the new technical theoretical foundation and industrialization application of large rack steel ingot casting, and improving the manufacturing technology level of key components of large equipment in China.

The silver ingot casting mold comprises a cast iron body, a first graphite plate and a second graphite plate, the cast iron body is of a groove-shaped structure with an opening in the top, the cast iron body is provided with a first inner wall and a second inner wall, the first inner wall and the second inner wall are oppositely arranged, the first inner wall is provided with a first vertical guide groove, and the second inner wall is provided with a second vertical guide groove. The first inner wall is provided with a first vertical guide groove, the second inner wall is provided with a second vertical guide groove, the first graphite plate is arranged in the first vertical guide groove in a vertically sliding mode, the second graphite plate is arranged in the second vertical guide groove in a vertically sliding mode, and a first embossment pattern is arranged on the face, facing the second graphite plate, of the first graphite plate. A second embossment pattern is arranged on the face, facing the first graphite plate, of the second graphite plate, and a cooling channel is formed in the cast iron body. The technical scheme is used for solving the problem that embossment pattern design is difficult to achieve in an existing integrated silver ingot casting mold.

The utility model discloses an aluminum ingot casting ingot stripping detection device which comprises a fixed plate, movable rods and an arc-shaped supporting arm, the movable rods are rotationally connected to the two sides of the fixed plate through supports, air cylinders are arranged outside the movable rods, hammer heads are arranged at the bottoms of the movable rods, and the arc-shaped supporting arm is arranged on the fixed plate on the inner sides of the supports. The number of the arc-shaped supporting arms is two, a connecting rod is arranged between the two arc-shaped supporting arms, a laser range finder is arranged in the middle of the connecting rod, and the laser range finder is electrically connected with the controller. According to the device, a formed aluminum ingot in an equipment mold can be knocked, so that the aluminum ingot can be quickly demolded; the laser range finder is arranged on the connecting rod, so that measured distance data can be transmitted to the controller in real time, and whether the aluminum ingot is completely demoulded or not is judged; automatic detection and judgment of the aluminum ingot demolding state are achieved, manual intervention is not needed, and the production efficiency and the automation level are greatly improved.

The invention discloses a magnesium alloy with ultrahigh electromagnetic shielding effectiveness and excellent strength and a preparation method thereof. According to the magnesium alloy, through specific component design (Gd, Zn and Zr), the working procedures of cast ingot casting, homogenization pretreatment, hot extrusion forming and aging treatment are combined, a double-peak grain structure is successfully constructed in the magnesium alloy, and a large number of fine beta'strengthening phases are induced and separated out; wherein the excellent strength and plasticity of the magnesium alloy are guaranteed through the double-peak grain structure; the strength of the material is remarkably improved through the fine beta'strengthening phase, and meanwhile, a formed interface network is beneficial to enhancing multiple times of reflection and absorption of electromagnetic waves, so that the strength is improved, the ultrahigh electromagnetic shielding effectiveness is guaranteed, the tensile strength of the material reaches and exceeds 370 MPa, and meanwhile, in the broadband range of 30 MHz to 3000 MHz, the electromagnetic shielding performance of the material is greatly improved. The electromagnetic shielding effectiveness stability is larger than 105 dB, breakthrough collaborative improvement of performance indexes is achieved, and the electromagnetic shielding material is suitable for being applied to the fields with extremely strict requirements for the weight, the structural reliability and the electromagnetic environment.

The utility model relates to metal ingot casting field especially nickel iron ingot casting demoulding device, including conveyor, pouring mold, mobile shovel plate, movable plate and elastic expansion link etc. ; The conveyor is installed with a plurality of pouring molds, each pouring mold is slidably connected with a mobile shovel plate, and the mobile shovel plate is attached to the pouring mold surface, each mobile shovel plate is slidably connected with a movable plate, and each movable plate is provided with a scraper department on both sides, each mobile shovel plate is fixedly connected with a plurality of elastic expansion links. The flow edge on the pouring mold surface is scraped down through the mobile shovel plate movement, thereby alleviating the difficulty of subsequent demoulding, and the movable plate is driven to move, the oxidation impurities attached to the ingot surface and the pouring mold are scraped, thereby separating the oxidation impurities and the pouring mold, facilitating the demoulding of subsequent ingot.

The invention relates to milling machine cast ingot transfer equipment and method.The milling machine cast ingot transfer equipment comprises a transverse moving rail, the transverse moving rail is arranged on one side between an inlet roller way and an outlet roller way of a milling machine, and an inlet longitudinal rail leading to the inlet roller way is arranged at one end, close to the side of the inlet roller way, of the transverse moving rail; an outlet longitudinal rail leading to the outlet roller way is arranged at the other end, close to one side of the outlet roller way, of the transverse moving rail; a plurality of pairs of storage saddles used for temporarily storing cast ingots are arranged on the other side of the transverse moving rail at intervals in the transverse direction, and a longitudinal material level rail leading to the storage saddles is arranged on the other side of the transverse moving rail. A main vehicle system capable of transversely moving is arranged on the transverse moving rail, and an auxiliary vehicle system capable of longitudinally moving to the inlet longitudinal rail, the outlet longitudinal rail and the longitudinal material level rail and used for lifting and falling cast ingots is arranged on the main vehicle system. The equipment and the method are beneficial to solving the problem of waiting time of a milling machine caused by returning and overturning of the cast ingot in the traditional process, so that continuity and high efficiency of the production process are realized.

The application discloses an aluminum alloy ingot casting device, which comprises a mounting frame, a plurality of molds are rotatably installed in the inner cavity of the mounting frame, a feeding pipe is fixedly installed on the top of the mounting frame, and a water tank is fixedly installed on one side of the mounting frame; the device further comprises a drying mechanism which is used for drying the aluminum alloy ingot cooled by water; the drying mechanism comprises a fan, the fan is fixedly installed on one side of the water tank, a gas pipe is fixedly connected to one side of the fan, an electric heating wire is fixedly installed in the inner cavity of the gas pipe, a plurality of air outlet pipes are fixedly installed on the outer surface of the gas pipe, a plurality of rolling shafts are rotatably installed in the inner cavity of the water tank, and a connecting box is fixedly installed on the top of the water tank; due to the self-gravity of the aluminum alloy ingot, the aluminum alloy ingot slowly slides on the top of the rolling shafts through the inclined arrangement of the rolling shafts, the fan blows air into the inner cavity of the gas pipe, the air is heated by the electric heating wire in the inner cavity of the gas pipe, hot air blows towards the aluminum alloy ingot to blow off the water on the surface of the aluminum alloy ingot, and the aluminum alloy ingot is dried.

The invention provides a gold and silver ingot multi-mold static ingot casting machine. The gold and silver ingot multi-mold static ingot casting machine comprises a melting and cooling mechanism, a mold moving mechanism, a weighing and feeding mechanism, a cover taking mechanism, an ingot discharging and cooling mechanism, a furnace conveying mechanism, an ingot overturning mechanism, a mold spacer block, a mold and a mold cover. The conveying and furnace entering mechanism is used for moving the mold filled with the raw materials from the tail end of the cooling station to the front end of the heating station and conveying the mold into the heating station; the mold moving mechanism is used for achieving mold transferring, and the cover taking mechanism, the weighing and feeding mechanism, the ingot overturning mechanism and the ingot discharging and cooling mechanism are arranged on one side of the cooling station. When the heating station of the melting and cooling mechanism completes melting of the raw materials in the mold, the mold is sent to the cooling station. And at the moment, the conveying and charging mechanism can convey another mold filled with the raw materials into a heating station of the melting and cooling mechanism in time for melting and casting. In this way, the heating station is fully utilized, continuous ingot casting of the heating station is achieved, and then the ingot casting efficiency can be more effectively improved.

The invention belongs to the technical field of aluminum alloy production, and particularly relates to a short-process aluminum alloy slab ingot casting system which comprises a conveying device arranged in a T shape, the conveying device comprises a first machine box and a second machine box, and a roller conveying mechanism is arranged on the first machine box; the roller transmission mechanism comprises a plurality of conveying rollers arranged on the first case, and gaps for the detection mechanism to extend out are formed between the conveying roller in the middle and the conveying rollers on the two sides; a detection mechanism is arranged in the first case, the detection mechanism comprises a lifting air cylinder, a base, a weighing device and a carrier roller assembly, and the carrier roller assembly can extend out of the upper end of the first case through the gap and support the slab ingot for weight measurement; a pushing mechanism is arranged on one side of the first machine box and right faces the second machine box. By means of the design, slab ingots can be rapidly and accurately jacked and weighed, unqualified slab ingots are recycled and directly returned to a furnace for recasting, and the technological process is further simplified.

The utility model relates to aluminium big slab ingot casting well deepening structure, including anchor line, big steel cylinder, protection steel cylinder, concrete cushion, protection cylinder and flange base, the both sides of casting well set anchor line, the bottom center of casting well sets up big steel cylinder, concrete cushion and protection cylinder are set up in big steel cylinder, and the concrete layer is poured between the protection cylinder circumferential side and big steel cylinder inner wall, and the flange base for installing hydraulic cylinder is anchored in the top of protection cylinder, protection steel cylinder is coaxially arranged in big steel cylinder, and the top end of protection steel cylinder is close to flange base lower plane, and protection steel cylinder vertically downward passes through protection cylinder and concrete cushion and then extends out of big steel cylinder, the ground on one side of the top end of casting well is built to have the pit, and the auxiliary turnover device and steel backing plate are set up in the pit, and the straight up slab ingot is laid to the steel backing plate by auxiliary turnover device, the utility model discloses can increase the structural strength of casting well, and gradually lays down the straight up slab ingot again, and then hoists and transports to the next process, is applicable to the casting operation of bigger specification slab ingot.

This invention discloses a rare earth molten salt electrolysis system and method. The rare earth molten salt electrolysis system includes a rare earth molten salt electrolysis device, a base, liquid guiding pipes, and a rare earth metal ingot casting device. Multiple bases are arranged in parallel. Each base has multiple receiving tanks. Multiple rare earth molten salt electrolysis devices are used. Each device includes an electrolysis cell body and a tubular cathode. A portion of the tubular cathode extends into the electrolysis cell body, and another portion is located outside the electrolysis cell body. The tubular cathode has a hollow structure. At least a portion of the electrolysis cell body is disposed within the receiving tanks. Multiple liquid guiding pipes are connected to the tubular cathode and the rare earth metal ingot casting device, respectively, for guiding the electrolyzed liquid rare earth metal into the rare earth metal ingot casting device. The rare earth metal ingot casting device is configured to form multiple ingot casting chambers. The rare earth molten salt electrolysis system of this invention can improve electrolysis efficiency.

The invention provides a method and device for predicting the crack risk in the preparation process of a nuclear power steel material, and the method comprises the steps: building and training a high-precision crack risk prediction model through the quantification of the interaction of the die casting temperature, the cooling time, the austenite grain size, the precipitate size and the ferrite film thickness; through the trained crack risk prediction model, the crack risk coefficient of the to-be-tested nuclear power steel material can be predicted based on the preparation process parameters and the structural characteristic parameters of the to-be-tested nuclear power steel material, and the process adjustment necessity assessment is carried out according to the crack risk coefficient of the to-be-tested nuclear power steel material. Crack defects are pre-judged in advance, die casting process parameters are optimized, and ingot casting quality is improved.

The utility model discloses a device for measuring the dry slag rate of liquid reduced lead. The device comprises a sampling mechanism for sampling reduced lead liquid from a liquid lead bag, and an ingot casting mold for preparing the reduced lead liquid taken by the sampling mechanism into a lead ingot for measuring the oxygen content and the sulfur content so as to calculate the dry slag rate of the reduced lead, the sampling mechanism comprises a sampling rod, a sealing plug matched with the sampling rod for sampling, and a handle connected to the outer wall of the sampling rod; the top end of an inner hole of the sampling rod is in a circular truncated cone shape facilitating installation of the sealing plug. The lower part of the sealing plug is in a big-end-up circular truncated cone shape matched with the top end of the inner hole of the sampling rod; the ingot casting mold is in a hollow cylinder shape with a bottom, and the interior of the ingot casting mold is in a big-end-up circular truncated cone shape so that a circular truncated cone-shaped lead ingot can be cast. The dry slag rate measuring device is simple in structure, rapid in dry slag rate measurement and high in accuracy, solves the problems that a conventional wet lead dry slag rate measurement period is long, measured data are easy to interfere, and measured values have deviation, and can better guide adjustment in the production process.

The utility model discloses a vacuum melting ingot furnace for ingot casting of high-purity reduced germanium powder. The vacuum melting ingot furnace comprises a furnace body, a furnace cover, a vacuum pump and a graphite boat bracket, the furnace cover is arranged on the furnace body, the furnace cover is provided with a water circulating pipeline, and the furnace cover is provided with a discharge pipeline and a pressure gauge; the furnace body is a hollow cylinder, a vacuum hearth is arranged in the furnace body, the furnace body is provided with an exhaust pipe, and the exhaust pipe is connected with a vacuum pump; and a heating resistance tape is arranged around the furnace body and is wound into a corrugated shape. By means of the reasonable structural design, the reduction germanium powder can be fully subjected to melting ingot casting, the single efficiency is greatly improved, meanwhile, the power consumption is reduced, and the production time is shortened. A plurality of graphite boats and supports thereof are placed in the vacuum hearth, so that the efficiency of single ingot casting is improved, and electric energy is saved.

The invention discloses a production technology for a semiconductor silicon device ingot casting crucible. The production technology for the semiconductor silicon device ingot casting crucible comprises the steps that raw materials are prepared, wherein the raw materials of a quartz coating, the raw materials of a fused quartz ceramic sleeve, the raw materials of a silicon nitride coating and the raw materials of a fused quartz ceramic crucible are prepared; the raw material of the quartz coating is natural high-purity quartz sand containing 99.99% of silicon dioxide, and the raw material of the fused quartz ceramic sleeve and the raw material of the fused quartz ceramic crucible are both mixtures of D50 quartz fine slurry with the size of 8-12 micrometers and quartz coarse sand with the size of 20-200 meshes. According to the production process of the ingot casting crucible for the semiconductor silicon device, the fused quartz ceramic sleeve can be provided with a porous structure, and stress can be released when silicon liquid adheres; the overall stability of the composite structure is enhanced through injection coagulation, slip casting and drying treatment, crucible breakage or silicon ingot defects caused by stress concentration are avoided, and ingot casting stability is guaranteed.

This utility model belongs to the field of ingot casting processing, specifically disclosing a water inlet structure for a smelting furnace. It includes a feed tank located at the furnace opening, with a feed inlet at the top and a cover for sealing it. A discharge outlet is located on the side of the feed tank, communicating with the furnace opening. The bottom of the feed tank is inclined, with its lower end facing the furnace opening. A limiting ring is installed on the cover, with a sealing element on its inner wall. The limiting ring engages with the outer wall of the upper part of the feed tank, and the sealing element seals the gap between the limiting ring and the outer wall of the upper part of the feed tank. This utility model solves the problems of molten aluminum oxidizing upon contact with air and forming slag when flowing through the water inlet, and some molten aluminum remaining on the inner wall of the water inlet due to temperature drop, forming hardened aluminum slag, requiring regular slag removal and causing raw material waste.

The invention belongs to the technical field of alloy heat treatment, and particularly relates to a cobalt-based high-temperature alloy pipe, a preparation method and a high-temperature component. The invention discloses a preparation method of a cobalt-based high-temperature alloy pipe. The cobalt-based high-temperature alloy pipe comprises the following components in percentage by weight: 0.05%-0.15% of C, 0.2%-0.5% of Si, less than or equal to 1.50% of Mn, less than or equal to 0.020% of P, less than or equal to 0.010% of S, 20.0%-24.0% of Cr, 20.0%-24.0% of Ni, 13.0%-16.0% of W, less than or equal to 3.0% of Fe, 0.02%-0.12% of La and the balance of Co and inevitable impurities. And then ingot casting, electroslag remelting, forging cogging, hot extrusion cogging, intermediate pipe cold machining, intermediate pipe solid solution heat treatment, finished product cold machining, finished product solid solution heat treatment and finishing are conducted, and finally the cobalt-based high-temperature alloy pipe is obtained.