82 results about "Mangalloy" patented technology

The utility model relates to the technical field of silicon-manganese alloy cooling, and discloses a silicon-manganese alloy granulation rapid cooling tower which comprises a storage barrel, a first partition plate is fixedly connected to the middle of the inner wall of the storage barrel, a compressor is fixedly connected to the left side of the top of the first partition plate, and a connecting pipe is fixedly connected to the top of the compressor. A condenser is fixedly connected to one end of the connecting pipe, a water pump is fixedly connected to the right side of the top of the first partition plate, a water outlet pipe is fixedly connected to the front end of the water pump, a water suction pipe is fixedly connected to the top of the water pump, and a cooling box is fixedly connected to one end of the water suction pipe; the right end of the water injection pipe is fixedly connected with the bottom of the left side of the outer wall of the cooling box. According to the utility model, a refrigerant is compressed through the compressor, the refrigerant is sent to the condenser through the connecting pipe for heat exchange, the water pump is started, and the cooling liquid subjected to cooling treatment in the cooling box is sucked back through the water suction pipe.

To provide a method and an apparatus for producing carbon-recovering type manganese-based alloys by which the reduction of CO2 discharge is made possible.SOLUTION: A method for producing a carbon-recovering type manganese-based alloy includes a step (A) of charging a manganese ore-derived raw material having a manganese oxidation degree of 1.0 to 1.1 and a carbonaceous material into an electric furnace to perform refining, and then performing slag / metal separation, and a step (B) of producing a synthetic fuel using carbon monoxide contained in a by-product gas generated from the electric furnace as a raw material.SELECTED DRAWING: None

The utility model provides a silicomanganese alloy flue gas waste heat recovery heating device, and relates to the field of flue gas waste heat recovery, the silicomanganese alloy flue gas waste heat recovery heating device comprises a recovery mechanism, the upper side of the recovery mechanism is provided with a filtering mechanism, the filtering mechanism is internally provided with a switching mechanism, and the upper side of the switching mechanism is detachably provided with three first filter elements; two supporting and adjusting mechanisms are detachably mounted outside the recycling mechanism, and second filter elements are arranged on the upper sides of the supporting and adjusting mechanisms. Through cooperation of the driving motor, the transmission gear, the teeth, the rotating table and other structures, the multiple first filter elements can be integrated in the mounting pipe in a circumferential array mode, when the filtering efficiency is reduced due to blockage of a certain filter element, the driving motor only needs to be started through an external controller, the rotating table can be driven to rotate, and the filtering efficiency is improved. The standby filter element is quickly switched to the working position, shutdown or disassembly is not needed in the process, and the problems that a filter element of a traditional structure is tedious in replacement operation, time-consuming and labor-consuming are solved.

The utility model discloses a manganese alloy additive forming die which comprises stamping equipment and a die plate, fixing bases are evenly distributed at the bottom of the stamping equipment, stamping bases are detachably installed at the bottoms of the fixing bases, the die plate is arranged below the stamping bases, die holes are formed in the die plate, and the die holes and the stamping bases are arranged in a one-to-one correspondence mode. A first supporting plate is arranged below the mold plate, an ejection mold block is arranged at the position, located below the mold hole, of the first supporting plate, a stamping base is detachably installed at the bottom of the fixed base, and the stamping base is stamped into the mold hole and extrudes the ejection mold block, so that manganese alloy stamping forming machining is achieved, stretching and retracting of a first telescopic rod are achieved, and the mold plate is pulled down. And the ejection mold block is ejected into the mold hole, so that the formed manganese alloy block is ejected out, and the demolding production of the manganese alloy block is realized.

The application belongs to the technical field of metallurgy, and discloses a high-purity raw material low-carbon silicon-manganese alloy precise smelting method. The method adds 0.1%-0.3% of nano CaO-Al2O3 composite catalyst in electrolytic manganese, silica and semi-coke raw materials, and then smelts in stages in an inert atmosphere ore-heating electric furnace after mixing and briquetting; the catalyst forms CaAl2O4 active phase at 1550-1650 DEG C, selectively adsorbs and activates SiO2, and reduces the reduction activation energy of SiO2 by 46.4%, while Fe2O3 is inhibited from reduction due to difficult adsorption. The application breaks through the inherent constraints of thermodynamics and kinetics in traditional silicon-manganese alloy smelting by constructing a nano catalyst-selective reduction technology paradigm, significantly reduces energy consumption and carbon emissions, and simultaneously realizes the multiple goals of low carbonization, high purification and greenization without sacrificing production efficiency.

The invention relates to the technical field of silicon-manganese alloy processing, and discloses a low-carbon silicon-manganese alloy processing mixing feeding device which comprises a conveyor, a mixing conveying assembly is arranged on one side of the conveyor, the conveyor comprises a fixed support, a groove-shaped conveying belt is arranged at the upper end of the fixed support, and a closed shell is fixedly arranged on the outer side of the groove-shaped conveying belt; a plurality of groups of discharging hoppers are fixedly mounted at the upper end of the closed shell, a discharging assembly is fixedly mounted at the output end of the groove-shaped conveying belt, and a driving motor is linked with a U-shaped connecting rod to drive a wavy mixing pipeline to achieve periodic movement that the upper section moves downwards to stretch a corrugated pipe and the lower section is lifted upwards to support the pipeline; the materials are disturbed by axial push-pull shearing force, radial centrifugal overturning force and local air pressure, so that the mixing uniformity of the materials is improved to 85% or above from the existing lower than 65%, the form of each material is not changed in the whole process, and the processing key parameters such as the granularity and the density of the raw materials are not influenced.

The invention discloses a low-energy-consumption submerged arc furnace for producing silicon-manganese alloy, and relates to the technical field of submerged arc furnaces. The low-energy-consumption submerged arc furnace for producing the silicon-manganese alloy comprises a submerged arc furnace body and further comprises a self-baking electrode, one end of the self-baking electrode is inserted into the submerged arc furnace body, the other end of the self-baking electrode is exposed above the submerged arc furnace body, an electrode shell is welded to the upper end of the self-baking electrode, die holes are evenly formed in the side wall of the electrode shell, electrode paste is sintered in the electrode shell, and the die holes are formed in the side wall of the electrode shell. The length of the self-baking electrode is continuously increased; the grooving die head is positioned on the periphery of the electrode shell; according to the self-baking electrode in the low-energy-consumption submerged arc furnace for producing the silicon-manganese alloy, the electrode length is increased by sintering the electrode paste in the electrode shell, the conductive fins can be reused, the replacement period of the conductive fins is greatly prolonged, and the cost is saved; therefore, large holes do not need to be formed in the furnace cover, and the amount of spark spraying in the furnace is greatly reduced.

The utility model provides a hot charging and hot conveying device of a large silicon manganese ore heat furnace. The hot charging and hot conveying device for the large-scale silicon manganese submerged arc furnace comprises a rail conveying vehicle body used for conveying silicon manganese alloy materials processed by the submerged arc furnace; the rail transfer cart comprises a rail transfer cart body and two mounting plates arranged on the rail transfer cart body, connecting shafts are rotatably mounted on the two mounting plates, a hot delivery box used for hot charging and hot delivery of silicon-manganese alloy materials processed by a submerged arc furnace is fixedly mounted on the two connecting shafts, and a feeding pipe is arranged on the hot delivery box. According to the hot charging and hot conveying device of the large-scale silicon-manganese hot furnace, hot charging and hot conveying treatment can be conducted on silicon-manganese alloy raw materials processed by the silicon-manganese hot furnace, meanwhile, the problem that the silicon-manganese alloy raw materials make contact with oxygen to be oxidized in the conveying process can be avoided, the safety of hot charging and hot conveying of the silicon-manganese alloy raw materials is improved, and discharging is convenient.

The application discloses a kind of high-strength packing belt raw material steels with strength above 1000MPa, which is characterized in that the chemical components are as follows: C: 0.19-0.25%, Si: 0.05-0.30%, Mn: 1.20-1.57%, P≤0.030%, S≤0.025%, Alt: 0.020-0.050%, Ca: 0.0008-0.0020%, and the balance is Fe and inevitable impurities; and a specific production method is also disclosed. The purpose of the application is to provide a kind of high-strength packing belt raw material steels with strength above 1000MPa and its production method. By adding carbon, silicon, manganese alloying elements to strengthen the design mechanism, using low-temperature controlled rolling and controlled cooling process for hot rolling, and using more than 70% high-pressure reduction ratio for pickling, a high-strength packing belt raw material steel with 1000MPa high strength and certain elongation is obtained.

The invention discloses a polyurethane flame-retardant sound-insulation composite board with a multi-layer structure and a preparation method thereof, and belongs to the technical field of composite boards, nickel nitrate is used as a nickel source, ferric nitrate is used as an iron source, nickel ferrite powder is obtained through a solvothermal method and a high-temperature calcination method, the nickel ferrite powder is compounded with graphene oxide to obtain composite aerogel powder, the surface of the composite aerogel powder is coated with polydopamine, and the flame-retardant sound-insulation composite board with the multi-layer structure is obtained. The enhanced aerogel powder is obtained; the preparation method comprises the following steps: preparing functional rigid polyurethane foam from polyether polyol, polymethylene polyphenyl polyisocyanate, enhanced aerogel powder, ammonium polyphosphate, magnesium hydroxide and a foaming aid through a one-step foaming method, putting the functional rigid polyurethane foam as a core layer between an aluminum-magnesium-manganese alloy color steel plate and a porous sound insulation plate, and carrying out hot-pressing compounding, so as to obtain the aluminum-magnesium-manganese alloy color steel plate / porous sound insulation plate. The polyurethane flame-retardant sound-insulation composite board with the multi-layer structure is obtained; and comprehensive improvement of flame retardance, sound insulation, heat insulation, electromagnetic shielding and dimensional stability is realized.

The application discloses a method for analyzing silicon nitride manganese alloy by glass melting X-ray fluorescence spectrum, and comprises the following steps: step one, mixing a sample and an oxidizing agent and placing them in the middle of a platinum yellow crucible with a flux on the bottom; step two, placing the sample in an electric heating automatic melting furnace to prepare a to-be-detected glass disc by borate melting; step three, completely melting, automatically casting, cooling the sample disc, demolding and obtaining a glass disc for X fluorescence analysis; and step four, optimizing analysis parameters, establishing a working curve, performing sample analysis and obtaining the content of measured elements. The application relates to the technical field of metallurgical chemical analysis and detection, and particularly relates to a method for analyzing silicon nitride manganese alloy by glass melting X-ray fluorescence spectrum.

This application provides a method for smelting a low-phosphorus silicon-manganese alloy, comprising: obtaining raw materials for smelting the low-phosphorus silicon-manganese alloy and pretreating the raw materials to obtain smelting raw materials; adding the smelting raw materials to an electric furnace for smelting to obtain a first low-phosphorus silicon-manganese alloy liquid; transferring the first low-phosphorus silicon-manganese alloy liquid to a shaking ladle and reacting for a first preset time to obtain a second low-phosphorus silicon-manganese alloy liquid; transferring the second low-phosphorus silicon-manganese alloy liquid to a ladle, spraying a first dephosphorizing agent into the ladle for a second preset time, allowing it to stand for a third preset time, and then removing slag to obtain a third low-phosphorus silicon-manganese alloy liquid; pouring the third low-phosphorus silicon-manganese alloy liquid into a mold to cast an ingot, and demolding it after cooling to obtain the finished low-phosphorus silicon-manganese alloy. This application, through pretreatment, shaking ladle operation, and spraying of the first dephosphorizing agent, reduces the phosphorus content and impurities in the finished low-phosphorus silicon-manganese alloy, thereby improving the purity of the finished low-phosphorus silicon-manganese alloy.

The utility model relates to the technical field of slag grabbing machines, and discloses a high-efficiency silicon-manganese alloy electric furnace slag grabbing machine which comprises a mounting block and two sets of grabbing hands, rotating grooves are symmetrically formed in the middles of the bottom ends of the two sides of the mounting block, and driving rods are horizontally welded to the top ends of the grabbing hands. And the middle part of the bottom side of the mounting block is vertically and rotatably connected with a screw rod through a bearing. According to the slag grabbing device, the servo motor is controlled to work, the lead screw can be driven to rotate, the two sets of first racks can be pushed to move downwards through the sliding plate, the driving rod can be driven to rotate through the second rack, and therefore the two sets of grabbing hands are driven to rotate relatively, and slag grabbing is achieved; the sliding plate stops moving, the servo motor continuously works and can drive the stirring rod at the bottom end of the lead screw to rotate, so that the slag on the inner sides of the two groups of grippers is stirred, residual liquid silicon-manganese alloy on the surface of the slag can be discharged through the liquid discharging hole, and resources are saved.

This invention relates to the field of welding materials technology, and more particularly to a low-slag, copper-free, gas-shielded solid welding wire and its preparation method. Molten iron and scrap steel are mixed and subjected to primary refining. After tapping, coke-silicon-manganese alloy is added for deoxidation and alloying. Under argon stirring, zirconium iron and iron-titanium are added to the resulting primary molten steel for alloying, followed by refining and vacuum degassing to obtain welding wire molten steel with the target chemical composition. This is then continuously cast, with iron powder added during the casting process, ultimately casting a welding wire billet. The welding wire billet is then rolled, peeled, and drawn to obtain a gas-shielded solid welding wire. In this invention, high-purity iron powder is fed into the continuous casting stage to provide active oxygen, allowing Ti and Zr to naturally generate nano-sized oxides with the active oxygen during the solidification of the molten steel, exerting the metallurgical fine-grain strengthening effect of oxides. Combined with low-silicon composite deoxidation and copper-free self-passivation treatment, this achieves slag-free, environmentally friendly, high-strength, high-toughness, and high-heat-induction stable welding of the welding wire.

This invention relates to the field of steel bar production technology, specifically to a 400MPa grade hot-rolled ribbed steel bar and its preparation method, comprising the following steps: Step 1: Converter steelmaking, controlling the final carbon content to 0.07%-0.09%, and sequentially adding a composite deoxidizer, silicon-manganese alloy, and ferrotitanium to the ladle; Step 2: Continuous casting, using a crystallizer immersion nozzle protection casting process; employing a secondary cooling process; the superheat of the tundish is 10-15℃; Step 3: Heating, with the heating temperature controlled at 1000-1040℃; Step 4: Rolling, with an initial rolling temperature of 1000-1040℃ and a controlled rolling temperature of 900-950℃; Step 5: Cooling, with a controlled cooling temperature of 860-890℃; Step 6: Producing the finished product. This invention improves the titanium recovery rate, reduces smelting costs, and improves the mechanical properties of hot-rolled ribbed steel bars.

The utility model discloses a spring needle pressing mechanism which comprises a carrier plate and a support, the carrier plate is hinged to the support, a small spring and a large spring are installed on the carrier plate, the large spring is fixedly installed on the face, opposite to the support, of the carrier plate, the small spring penetrates through the carrier plate in a sliding mode, the small spring is connected with a hook, the carrier plate rotates to be closed with the support, the large spring is compressed, and the small spring is reset. The carrier plate rotates to be opened from the support, the large spring resets, and the small spring is pulled to deform. According to the utility model, only two springs are used, the structure is simple, the manufacturing cost of equipment is greatly reduced, the operation is stable, the springs are naturally pressed and the pressing needles are opened during overturning by virtue of the self weight of the carrier plate and the carrier plate support frame, and the spring pressing needles are made of silicon-manganese alloy steel materials, so that the fatigue resistance is very high, and the stability is very good.

The invention relates to an optimization method for a silicon-manganese alloy ore structure, belongs to the technical field of silicon-manganese alloy smelting, and solves the technical problems of poor product quality, low production efficiency, high cost, failure in effective utilization of generated silicon-manganese slag and the like caused by manganese-rich slag in existing silicon-manganese alloy smelting. According to the solution, the method for optimizing the ore structure for the silicon-manganese alloy comprises the following steps: (1) regulating and controlling the component proportion of self-produced silicon-manganese slag; (2) preparing raw materials: preparing the self-produced silicon-manganese slag, sintered ore and manganese-rich slag; (3) determining the proportion of the ore structure: determining that the sum of the mass of the self-produced silicon-manganese slag and the mass of the sintered ore is 30-50 parts and the mass of the manganese-rich slag is 50-70 parts according to the mass fraction; the mass ratio of the self-produced silicon-manganese slag to the sintered ore is 1: (1.5-3); compared with the prior art, the method has the advantages that process indexes are maintained, the fault occurrence rate is reduced, the resource utilization rate is improved, environmental pollution is reduced, and economic benefits are improved.

The invention provides a low-cost method for preparing high-strength building steel from a niobium-phosphorus alloy, and belongs to the technical field of steel preparation. The method comprises the steps that waste steel is smelted in an electric furnace, the P content of molten steel at the end point of the electric furnace is controlled to be smaller than or equal to 0.012%, the C content of the molten steel is controlled to be 0.06%-0.1%, vanadium slag and silicon-manganese alloy are added along with steel flow in the tapping process, and then argon blowing stirring is conducted; molten steel is conveyed to an LF refining furnace, a first batch of ferrosilicon alloy, carbon powder and lime are added, the molten steel is electrified and heated to 1520-1540 DEG C, the P content in the molten steel is controlled to be smaller than or equal to 0.012%, the C content is controlled to be 0.14-0.16%, the silicon content is controlled to be 0.13-0.15%, and the phosphorus content is controlled to be smaller than or equal to 0.012%, the molten steel continues to be electrified and heated to make white slag, the lime and the remaining ferrosilicon alloy are supplemented, and when the molten steel meets the refining requirement, niobium-phosphorus alloy is added into the LF refining furnace; and controlling the temperature of the molten steel at the end of refining to obtain the high-strength building steel. According to the method, the absolute limitation on the phosphorus content of the raw materials in the steelmaking process is broken through, and the high-phosphorus alloy can be safely applied in the steelmaking process through the phosphorus content balance control strategy that the phosphorus content is low in the front and high in the rear.

The application discloses a high-temperature-resistant silicon-manganese alloy pouring ingot mold and belongs to the technical field of ingot molds. The high-temperature-resistant silicon-manganese alloy pouring ingot mold comprises an ingot mold body and a forming cavity formed in the ingot mold body. A lifting lug is arranged at the upper end edge of the ingot mold body. A heat shield is arranged at the side of the ingot mold body. An air guide opening is formed in the heat shield. Heat absorbing particles are filled in the heat shield. A movable column is fixed to the upper and lower ends of the heat shield and is inserted into the middle part of a limiting cover. The high-temperature-resistant silicon-manganese alloy pouring ingot mold is provided with a cooling channel. The fluid in the cooling channel exchanges heat with the ingot mold, so that the ingot mold is cooled. The fluid after heat exchange can pass through a heat storage area, the heat energy in the fluid after heat exchange is utilized, the ingot mold is preheated by using the heat energy, the inner wall of the mold body is prevented from instantaneously expanding due to heat and the outer wall is prevented from shrinking due to low temperature, great thermal stress is avoided, mold cavity cracks and deformation are avoided, and the like.

The invention discloses steel for bridge engineering and a high-purity preparation method thereof. The alkalinity of final slag is controlled to be 3.8-4.3, the mass ratio of MgO is controlled to be 8.0-10.0%, the mass ratio of total iron is controlled to be 15-17%, and the temperature of tapping molten steel is controlled to be 1650-1670 DEG C; during tapping, alloying and slagging are carried out according to the sequence of lime, silicon-manganese alloy or medium-carbon manganese-iron alloy, aluminum ingots and lime, the mass MAl of Al added through the aluminum ingots meets the formula that MAl = 0.0014 MO + 0.75, MO is the mass ratio of O in molten steel during tapping, the unit is ppm, and the unit of MAl is kg / t.

The invention relates to the technical field of steel smelting, in particular to a method for reinforced deoxidation of a slag surface in a rail steel LF refining process. The method comprises the following steps: converter smelting: a converter adopts a top-bottom combined blowing process, inert gas is blown from the bottom, and tapping is carried out when the end point of the converter is reached; after tapping is completed, the steel ladle is conveyed to a furnace rear argon blowing station for argon blowing; wherein in the tapping process, a silicon-calcium alloy is added for deoxidation, then a silicon-manganese alloy and a low-aluminum silicon-iron alloy are added for alloying, active lime is added for slagging, and a carburant is added for recarburization; in the preparation stage, molten steel is conveyed to an LF furnace refining station from the furnace rear argon blowing station, a gas pipe is connected, and the slag surface is blown open in a bottom blowing inert gas mode in the process that the molten steel is about to enter the station; lF refining: adding a silicon-calcium-barium alloy to the slag surface when an LF steel ladle enters a station, electrifying and heating, and then adding refining slag and cryolite for slagging; after the LF slagging is finished, adding the silicon-calcium-barium alloy again, and heating to 1550-1580 DEG C;

The invention discloses a method for producing manganese sulfate by low-temperature roasting and water leaching of manganese alloy slag, which is characterized by comprising the following steps of: drying, crushing and screening the manganese alloy slag, uniformly mixing the manganese alloy slag with a flux according to a mass ratio of (2.5-4.5): 1, heating to 80 DEG C in a tubular furnace under the protection of inert gas, roasting at constant temperature, heating to 280 DEG C, roasting at constant temperature, heating to 630 DEG C, cooling to the room temperature, cooling to the room temperature, cooling to the room temperature, cooling to the room temperature, cooling to the room temperature, cooling to the room temperature, cooling to the room temperature, cooling to the room temperature, and and after roasting is completed, natural cooling is conducted to the room temperature, deionized water is added, manganese sulfate is leached from a roasted sample at the room temperature, filtering separation is conducted, and high-purity manganese sulfate is obtained after classified purification and impurity removal are conducted on filtrate. According to the method, hydrazine hydrate is added into ammonium sulfate, high-valence manganese in the manganese alloy slag is converted into low-valence manganese under the protection of inert gas, and the extraction rate of manganese in the manganese alloy slag is increased.

The utility model discloses a manganese alloy additive development and storage device which comprises a storage box body, a heat preservation box body and an anti-radiation box body, the heat preservation box body and the anti-radiation box body are sequentially arranged outside the storage box body, the storage box body and the heat preservation box body are installed in a clamped mode, and the anti-radiation box body and the heat preservation box body are bonded. The top end surface of the anti-radiation box body and the top end surface of the storage box body are both higher than the top end surface of the heat preservation box body, so that a sealing groove is formed by the top end surfaces of the anti-radiation box body, the storage box body and the heat preservation box body, the interior of the storage box body is kept dry, and manganese alloy additives can be better stored; through the arrangement of the separated storage frames, separated storage of the storage frames is achieved, accumulation storage is prevented, and effective dry ventilation protection is achieved; through the structural mode of the patent, the protective measures of ventilation, radiation protection, constant temperature and heat preservation of the manganese alloy additive are improved, and the use characteristics of the manganese alloy additive are guaranteed.

The utility model provides a circulating water recycling device for silicon manganese alloy, and relates to the field of circulating water recycling, the circulating water recycling device comprises a water tank, a water tank is formed in the upper side surface of the water tank, a drainage groove is formed in the upper side surface of the water tank, the bottom wall of the drainage groove is arranged to be an inclined plane, and the drainage groove is communicated with the interior of the water tank; according to the circulating water treatment device, the slope drainage groove is arranged to guide water flow to flow in stably, and the adaptive design of the lifting plate and the slope storage groove is combined, so that the problem that circulating water impurities sink to the bottom and are difficult to treat is effectively solved, the impurities can be settled through gaps of the partition plates, and the water treatment efficiency is improved. Opening and closing of the lifting plate can accurately control impurities to enter the storage tank, accumulation and residues are avoided, smoothness of a circulating water channel is guaranteed, pipeline blockage and equipment abrasion are reduced, the overall structure is simple, the continuous water circulation requirement of silicon-manganese alloy smelting is met, and the operation stability of the system is improved.

The invention belongs to the technical field of steel smelting, and particularly discloses a method for improving the purity of molten steel by adjusting an LF (ladle furnace) slag system, which comprises the following steps of: firstly, injecting desulfurized molten iron into a converter for smelting until the total iron content in the slag is less than or equal to 1.5 percent; after tapping, lime, fluorite and a deoxidizing agent are added into a steel ladle and heated, and it is ensured that the alkalinity of top slag is 2.5-3.0; then adding a ferrosilicon alloy, a silicon manganese alloy and a high-carbon ferrochromium alloy into the molten steel to enable the components to reach designed components, then adding quartz sand into a steel ladle, and heating to reduce the alkalinity of refining slag; and finally, pure calcium wires are fed into the molten steel, and then the steel ladle is lifted to a continuous casting rotary table for standing and then transferred to a casting position for casting. In order to solve the problem that the dual requirements of molten steel desulfurization and inclusion plasticization control are difficult to consider in the prior art, the purposes of efficiently removing molten steel inclusions and purifying molten steel are achieved by adjusting the alkalinity of the steel slag in different stages of LF furnace refining and changing the alkalinity and components of the steel slag in the smelting process.

The utility model discloses a wear-resistant chain connecting piece, and relates to the technical field of chain connecting pieces, the wear-resistant chain connecting piece comprises a chain piece, the chain piece comprises chain segments, the two chain segments are combined into one chain piece, the chain segments are the same in shape, adjusting assemblies are arranged on the outer walls of the two adjacent sides of each chain segment, and the adjusting assemblies are matched with the chain segments. The outer walls of the chain pieces are coated with wear-resistant pads. According to the utility model, the wear-resistant pads protect the edges of the chain pieces and prevent the chain pieces from being worn in the working process, the chain pieces are made of high-manganese alloy, the wear resistance is better, and the wear resistance of the chain pieces is further improved through the combination of the wear resistance of the chain pieces and the wear resistance of the wear-resistant pads, so that the chain pieces are more durable and not easy to wear; the weight of the chain piece is reduced through the empty groove design of the weight reducing groove, the chain piece is lighter, compared with a traditional chain connecting piece, the abrasion resistance of the chain piece is remarkably improved, meanwhile, the chain piece is lighter, and the chain piece better conforms to the lightweight design of a chain.

This invention relates to an assembled high-strength aluminum-manganese alloy pavement panel, comprising: a pavement panel body and matching pins; the pavement panel body is a square plate structure, with the two sides forming a perpendicular angle extending in the Y and X directions respectively; the pins are provided at the Y-direction edge connection between two adjacent pavement panel bodies; the pavement panel body includes: an upper aluminum-manganese alloy plate as the top, a middle sandwich reinforcement layer, and a lower aluminum-manganese alloy plate as the bottom; the sandwich reinforcement layer is an aluminum alloy honeycomb or equidistantly distributed aluminum alloy reinforcing ribs; the upper aluminum-manganese alloy plate, the sandwich reinforcement layer, and the lower aluminum-manganese alloy plate are integrated into a single structure by brazing or high-temperature and high-pressure bonding. The high-strength aluminum-manganese alloy pavement panel provided by this invention has advantages such as simple structure, convenient assembly and disassembly, high rigidity, and reusability.

This application relates to a continuous casting production method for high-manganese alloy steel slabs, belonging to the field of steel preparation technology. The method includes: casting molten high-manganese alloy steel with a predetermined chemical composition, starting the casting machine, and increasing the casting speed from zero to a target speed with controlled acceleration to obtain a stable casting flow state; introducing the molten high-manganese alloy steel in the stable casting flow state into a crystallizer with a predetermined taper ratio for initial solidification to obtain a slab with a uniform initial shell; during the initial solidification process, continuously adding a low-basicity protective slag to the crystallizer, and controlling the addition method of the low-basicity protective slag; sending the slab that has completed the initial solidification into the secondary cooling zone of the continuous casting machine, and performing segmented cooling of the slab according to a predetermined non-uniform cooling intensity distribution, so that the surface temperature history of the slab avoids the high-temperature brittleness range of high-manganese alloy steel, thereby obtaining a high-manganese alloy steel slab.

The present invention relates to ferrous alloys with high strength, cost-effective corrosion resistance and cracking resistance for refinery service environments, such as amine service under sweet or sour environments. More specifically, the present invention pertains to a type of ferrous manganese alloyed steels for high strength and cracking resistance and methods of making and using the same for applications including, but not limited to, amine units used in oil and gas production, petroleum refining, and chemical production.