97results about How to "Convenient smelting" patented technology

The invention provides an extrusion casting method for a wrought aluminum alloy lampshade. The extrusion casting method comprises the following steps of S1, preparing an aluminum alloy precursor; S2, adding the aluminum alloy precursor into a smelting furnace, and heating to 690-710 DEG C until the aluminum alloy precursor is completely molten to obtain molten aluminum, introducing nitrogen or mixed inert gas to the molten aluminum by rotary blowing equipment for refining, purifying and skimming; S3, regulating the smelting temperature to 710-730 DEG C, and adding an AlSr alterant to react for 10-30 minutes; and then, regulating the smelting temperature to 700-720 DEG C again, adding an AlTiB grain refiner, uniformly stirring for 5-10 minutes, and next, adding a hexachloroethane refining agent to react, and skimming after ending to obtain refined molten aluminum; S4, pouring the refined molten aluminum into a die cavity, and carrying out extrusion casting to obtain a cast-state casting; and S5, carrying out thermal treatment on the cast-state casting to obtain the wrought aluminum alloy lampshade. The wrought aluminum alloy lampshade prepared by using the extrusion casting method is compact in tissue and high in corrosion resistance, tensile strength and elongation percentage.

An aluminum profile is annular and is prepared by components in percentage by weight: 91-93% of Al, 5.5-5.7% of Zn, 0.15-0.2% of Si, 0.80-0.86% of Mg, 0.1-0.14% of Cu, 0.2-0.35% of Fe, 0.1-0.12% of Cr, 0.15-0.2% of Mn, 0.1-0.25% of Zr and 0.1-0.2% of Ti. A heating processing technology comprises following steps of: (1) smelting and casting raw material aluminum ingots, enabling a casting speed to be 85-95mm/min, enabling a pouring temperature to be 715-730 DEG C, and enabling cooling water pressure to be 0.04-0.08MPa; (2) extruding, enabling an extruding temperature to be 440-460DEG C, and enabling an extruding speed to be 3-6M/min; (3) conducting stretcher strengthening, and enabling strengthening deformation quantity to be 0.5%-1.5%; (4) conducting aging furnace heating, enabling a furnace temperature of an aging furnace at a first section of aging to be 100 DEG C, enabling heat preservation time to be 3h, enabling the furnace temperature of the aging furnace at a second section of aging to be 160 DEG C, and enabling heat preservation time to be 5h; and (5) testing and packaging. The aluminum profile mainly solves the problem that the aluminum profile in the prior art is not high in strength, poor in breakage toughness and poor in fatigue performance.

The invention relates to a device used in non-vacuum smelt casting oxidizable metal and alloy. Wherein, the furnace has heater and pot; the furnace cover has gas inlet and material inlet; and it has cooler; the bottom of furnace has lower irrigator; the bottom of pot has bottom bowl; the irrigator of bottom bowl contacts the plug rod vertically; the bottom plug rod is connected to the dummy ingot head; the dummy ingot head adjusts the position of plug rod; the bottom bowl is connected to crystallizer connected to the cooler; the crystallizer has graphite sheath and cooling water groove, to reduce the casting ingot temperature; the dummy ingot head has dovetail groove to solidify the fusion as drawing function; the dummy ingot head is connected to adjuster. The invention processes the whole process under protective gas, with low hurt rate and improved quality.

The invention provides a PC alloy material and a preparation method thereof. The PC alloy material is prepared by mixing the following components in parts by weight: 100 parts of PC resin, 18-25 parts of aluminium coated modified magnesium oxide powder, 12-16 parts of surface modified aluminum oxide powder, 5-8 parts of rutile type titanium dioxide, 6-12 parts of modified graphene, 3-8 parts of a composite toughing agent, 3-6 parts of a composite flame-retardant agent, 8-20 parts of a compatilizer, 1.5-2.5 parts of a silane coupling agent, 0.5-1.5 parts of an oxidation inhibitor, 0.5-1.2 parts of an anti-dripping agent and 1.5-2 parts of an ultraviolet absorber. According to the PC alloy material, the PC resin and the various kinds of powder are fused; the powder is modified so that the powder can be fused in the PC resin fused body well; and the composite flame-retardant agent and the composite toughing agent are innovated, so that the prepared PC alloy material has good mechanical property, thermal property, optical property and electrical property, belongs to a brand-new PC alloy material, and has wide market popularization and application prospects.

The invention discloses a sintering combined oxygen-enriched side-blown smelting process of a vertical drying kiln in the technical field of environmental protection systems. The smelting process comprises the following steps of adding little lime and fine anthracite to copper and nickel-contained sludge, mixing the lime, the fine anthracite and the copper and nickel-contained sludge proportionally and stirring evenly to obtain a mixture; pelletizing the mixture by a pelletizer to obtain pellets, and adding the pellets evenly into the vertical drying kiln from a kiln crown by a feeding device,wherein the pellets move down by dead weight; adding obtained agglomerated cakes from the furnace top of an oxygen-enriched side-blown smelting furnace continuously together with inorganic hazardouswastes, such as waste anode scraps, quartz stone, limestone, non-ferrous metal smelting waste and incineration disposal residues; making obtained slag enter an electric slag cleaning furnace after theobtained slag is discharged from the oxygen-enriched side-blown smelting furnace, reheating and clarifying and separating the slag by the electric slag cleaning furnace, thereby clarifying and separating copper and nickel mechanically entrained in the slag once again, and discharging the slag from the electric slag cleaning furnace and performing water quenching to make the slag become water-quenched slag; and disposing generated flue gas by processes of waste heat recovery, shock chilling, bag dust collection, sulfur removal, denitration, fluorine and chlorine removal and the like, thereby realizing up-to-standard discharge.

The invention discloses a method for preparing a CuTi alloy material by vacuum induction melting. The method specifically comprises the following steps: matching 3.6% of Ti and 96.4% of Cu in percentage by weight, adding Ti in the form of an intermediate alloy, arranging an insulated riser at the upper part of a steel die during loading, wrapping the upper edge of the outer wall of the steel die with insulation cotton, mounting an electrolytic copper plate first, inserting the intermediate alloy at the upper part of the electrolytic copper plate, closing a furnace cover, starting a Roots pumpwhen P is smaller than or equal to -0.1 MPa by a vacuum gauge, switching on a composite vacuum gauge, and making preparation for heating when low vacuum is 10 Pa; performing melting according to powergradient, carrying out casting first slowly, then quickly and then slowly, rotating a potentiometer to a 0 position after casting, and carrying out discharging, cooling and demolding. The method forpreparing a CuTi alloy material by vacuum induction melting is more efficient, more environmentally friendly, lower in cost and suitable for wide promotion.

The invention belongs to the technical field of metallurgical equipment and discloses a tunnel kiln device suitable for the iron smelting technology. The tunnel kiln comprises a kiln body, a rail penetrating the kiln body and kiln cars arranged on the rail. The tunnel kiln comprises a drying section, a preheating section and a roasting section in the length direction of the kiln body. The working temperature of the drying section ranges from the normal temperature to 80 DEG C. The working temperature of the preheating section ranges from 80 DEG C to 600 DEG C. The working temperature of the roasting section ranges from 600 DEG C to 1500 DEG C. The tunnel kiln device is used for drying, preheating and roasting furnace burden briquettes, so that the requirement for smelting is met, energy consumption is low, and environment friendliness is achieved.

The invention discloses a medical suture material and a preparation method. The medical suture material comprises components in parts by weight as follows: 110-140 parts of magnesium, 1-2 parts of zinc, 0.1-0.4 parts of aluminum, 3-5 parts of molybdenum, 2-2.5 parts of calcium, 0.1 parts of carbon, 4-6 parts of niobium, 0.5-1 part of iron, 1-2 parts of manganese, 0.5-1 part of germanium, 1-2 parts of zirconium and 0.05-0.1 parts of titanium. The medical suture material has very high strength and elongation at break, is easily degradable and has good corrosion resistance and biocompatibility.

The invention discloses a high zinc-silicon-boron-ferro-copper alloy. The copper alloy is characterized by comprising the components in percentage by weight: 38.0-44.0 percent of zinc, 0.001-0.5 percent of silicon, 0.001-0.025 percent of boron, 0.005-0.5 percent of ferro, 0.001-0.01 percent of rare earth, 0.0005-0.1 percent of other element including at least one of phosphorus, magnesium, potassium, calcium, sodium, aluminum and barium, and the balance of copper and inevitable impurity elements. The copper alloy is used for manufacturing a cutting line for one-way wiring; compared with the prior art, the copper alloy has the advantages that the manufactured cutting line for one-way wiring is high in mechanical performance, stable in discharging performance and high in cutting speed; the cutting line is simple in processing procedures, wide in application and low in cost and has wide market prospect.

The invention discloses a copper-contained waste metal copper recycling process. The process comprises the following steps of firstly, preparing copper-contained clinker; secondly, preparing copper-contained powder; thirdly, brick making, wherein the copper-contained clinker prepared in the first step, and the copper-contained powder made in the second step are burdened until the copper containingamount reaches above 25wt%, and then enter a brick making system, and a solidifying agent is prepared for preparing a copper brick block; fourthly, smelting; and fifthly, smelting furnace smoke treatment. According to the copper-contained waste metal copper recycling process, metal copper in the copper-contained waste can be recycled, meanwhile, non-copper metal elements in the recycled copper alloy can be reduced, and a raw material can be provided for subsequent preparing of refined copper.

The heat resistant no-aluminum die cast Mg-RE alloy consists of Y 2-4 wt%, Gd 0.2-0.6 wt%, Zn 0.3-0.6 wt%, Mn 0.1-0.3 wt%, and Mg for the rest. Y as the excellent additive for raising the performance of Mg alloy can refine the dendrite crystal in the alloy, increase the rate of fiber structures in alloy fracture and raise the plasticity of the alloy; and Gd and Zn serve as the alloy reinforcing elements too. The heat resistant no-aluminum die cast Mg-RE alloy has excellent room temperature mechanical performance, high temperature mechanical performance superior to that of AE44 alloy, and excellent creep resistance in the conditions up to 250 deg.c and 30 MPa.

The invention relates to a production method of a high-strength and high-toughness aluminum bar. The production method comprises a workbench, an L-shaped frame plate, a crushing box, a crushing mechanism, a smashing mechanism, a screening mechanism, a smelting barrel, a stirring mechanism and an adjusting mechanism. The crushing mechanism, the smashing mechanism and the screening mechanism are combined, so that the size of fed aluminum alloy raw materials is reduced, and the aluminum alloy raw materials are conveniently conveyed and smelted. The small-size aluminum alloy raw materials are conveniently smelted, so that the smelting speed of the aluminum alloy raw materials is increased, and meanwhile the aluminum alloy raw materials are completely smelted. Therefore, the production efficiency of the aluminum bar is improved, and the situation that the production efficiency of the aluminum bar is low is avoided, Meanwhile, the size of a discharge chute is adjusted through the adjusting mechanism, therefore the amount of aluminum alloy raw material liquid injected into an aluminum bar casting cavity mold can be effectively controlled, the raw materials are prevented from spreading out of the aluminum bar mold, and resource waste can be effectively avoided.

The invention discloses a metal additive for aluminum alloy smelting and a using method thereof. 1.0-1.5% of -325-mesh titanium hydride powder is added into the metal additive; experiments find that when the metal additive is added under a condition that temperature of smelted aluminum is 680-700 DEG C, the titanium hydride powder occurs decomposition reaction similar to little explosion in the smelted aluminum, metal elements are uniformly dispersed in the smelted aluminum, and segregation of metal components of aluminum alloy is eliminated completely; a lot of heat is released during decomposition reaction, local temperature of the smelted aluminum is increased, and smelting of the metal elements is facilitated; adding temperature is low, energy consumption is low, burning up of the metal elements is reduced, and actual yield is increased; temperature of the smelted aluminum is increased to 730-750 DEG C, and alloying reaction rate is increased.

A burner of a reverberatory furnace comprises a natural gas main pipe. The front end of the natural gas main pipe is connected with a spray head with a throat. The spray head with the throat comprises a spray head body and the throat. The pray head body is a hollow diffusion-type semi-closed structure with the sectional area of the end face A larger than the sectional area of the end face B, the end face A is fully open, a connecting port connected with the front end of the natural gas main pipe is formed in the end face B, the cross section of the throat is rectangular, and the throat is fixedly connected with the end face A of the spray head body. The spray head with the throat is located in an oxygen distribution chamber, the oxygen distribution chamber is a closed cavity connected with a combustion chamber, a partition plate is arranged between the oxygen distribution chamber and the combustion chamber, oxygen spray holes are distributed in the surface of the partition plate, an installing hole matched with the spray head with the throat is formed in the partition plate, the upper edge of an outlet of the spray head with the throat is fixedly connected with the upper edge of the installing hole in a sealed mode, and gap is reserved between the lower edge and the two side edges of the outlet and the partition plate. The burner is wide in flame coverage, high in fuel utilization rate and little in damage to a vault of the combustion chamber.

The invention relates to a slag-forming constituent in casting lead and lead-base alloy, which comprises 35-70wt% of CaF2, 3-5wt% of Na3AlF6, 3-8wt% of KCl, 8-10wt% of NaCl, 2-5wt% of ZnCl2, 20-50wt% of C powder and 3-5wt% of NH4Cl. The invention makes use of the principle that inorganic salt can improve interfacial force and boundary tension between lead fondant and oxidate so as to de-slag in casting and using of lead-base product, improve quality of casting and using, ensure slag to carry on powder, and recovery metal efficiently. The invention the properties of simple preparation, low input of apparatus and capital and extensive usages such as lead ingot casting, lead-base alloy product casting and lead-base product later usage.

Disclosed is titanium-iron-carbon alloy with low cost and high strength. The titanium-iron-carbon alloy is characterized by comprising, by mass, 11%-12% of Fe, 0.03%-0.07% of C, the balance Ti and inevitable impurities. According to the titanium-iron-carbon alloy, a titanium alloy system serves as an object; the two elements of titanium and iron serve as a main alloy body; the titanium alloy with high strength and ductility is obtained by adding trace carbon element. The titanium alloy adopting the matching ratio is not only easy to smelt, but also low in cost.

The invention provides a device for non-vacuum smelting easy- to-oxidize metals and alloys, and its main parts comprise furnace body and furnace cover, where the furnace body is equipped with a heater, and a pot is placed inside the furnace body; and the furnace cover has an gas inlet, an gas outlet and a feed inlet and is equipped with a cooling mechanism; the bottom of the hearth is equipped with a bottom pouring orifice, a vertical stopper is arranged inside the furnace body, the lower end of the stopper is connected with the bottom pouring orifice, the upper end of the stopper is equipped with an adjustment mechanism which adjusts the vertical position of the stopper to prevent metal melt from flowing down in the smelting course; the lower side of the furnace body is directly connected with a crystallizer or iron mold, it adopts a down-pouring mode and the connecting channel is made with an gas inlet and an gas outlet. And its whole smelting and casting course is performed in the industrial pure protective gas, having low melting loss rate and good deoxidizing and dehydrogenating effects, easy to implement large-scale continuous operation and obviously improving the pouring quality.

The invention discloses an amorphous-nanocrystalline Fe-based composite soft magnetic alloy and a preparation method thereof. The amorphous-nanocrystalline Fe-based composite soft magnetic alloy is formed by compounding a Fe-based soft magnetic alloy A and a Fe-based soft magnetic alloy B, wherein the Fe-based soft magnetic alloy A is prepared from the following raw materials of Al, Si, B, Fe andunavoidable impurities; the Fe-based soft magnetic alloy B is prepared from the following raw materials of Al, Si, Ni, Co, Cr, Ti, Mo, Sm, B, composite rare-earth metal, Fe and unavoidable impurities;and the preparation method comprises the following steps of (S1) preparing powder of the Fe-based soft magnetic alloy A; (S2) preparing the powder of the Fe-based soft magnetic alloy B; (S3) preparing the powder of a Fe-based composite soft magnet; and (S4) smelting and rapidly quenching the powder of the Fe-based composite soft magnet to obtain the amorphous-nanocrystalline Fe-based composite soft magnetic alloy. The composite soft magnetic alloy disclosed by the invention is reasonable in formula, low in coercivity, simple in preparation method and suitable for industrial production.