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459results about How to "Reduce heating" patented technology

Combined plastic forming method of automobile hub and matching forming mold of automobile hub

The invention discloses a combined plastic forming method of an automobile hub and a matching forming mold of the automobile hub. The method comprises the following steps of: 1, forming the automobile hub by using light-alloy blanks through a set of forming mold at two steps under the condition of constant temperature, wherein the forming mold is provided with a split lower mold, two upper extrusion male molds and two upper bulging male molds, and the upper extrusion male molds and the upper bulging male molds are sequentially matched with the split lower mold; 2, matching the blanks in the mold by using the upper extrusion male molds and the upper bulging male molds during forming; 3, pre-forming a spoke part of the hub and the lower part of a rim by adopting an extrusion process; 4, forming the upper part of the rim into a hollow pipe blank; and 5, matching the upper bulging male molds with the lower mold and forming a pre-formed part formed in the step 1 into the hub through the extrusion process. Equipment disclosed by the invention has a simple structure, the deformation resistance of each-step process is lower, the mold size and the equipment tonnage are effectively reduced,the production efficiency is improved, and the production cost is lowered.
Owner:HENAN UNIV OF SCI & TECH

Smelting method of low-carbon aluminium killed steel with low silicon content

The invention relates to a smelting method of the low-carbon aluminium killed steel with a low silicon content, belonging to the steelmaking technical field of the metallurgy industry. The technical scheme in the invention is as follows: before blast furnace vanadium-containing molten iron enters the steelmaking process, the processes of vanadium extraction and silicon removal are performed, the steelmaking process adopts the semi-steel smelting process, low-silicon pre-melted composite refining slag is added in molten iron during the slag-stopping tapping process, the deoxidizing process andthe alloying process for pre-deoxidation; after molten iron enters the ladle furnace (LF) refining process, the conventional mode for preparing white slag through electrode heating is not adopted, white slag is rapidly prepared by covering a cover for heat preservation and using aluminum powder as a deoxidizer in the reducing atmosphere of argon stirring; then calcium treatment and argon soft blowing are performed, the thermodynamic and dynamical conditions of the silicon kickback of molten steel are inhibited under the premise of ensuring the refining quality; and after the argon soft blowing of molten steel is completed, molten steel enters the continuous casting process. By adopting the method, the Si element qualification rate of the low-silicon and low-carbon aluminium killed steel is up to more than 98%; and as the refining electrode heating process is not adopted, the method is characterized by low energy consumption, environmental protection and low production cost.
Owner:HEBEI IRON AND STEEL

Continuous extrusion and continuous rolling process method and production line used for producing oxygen-free copper strip billet

The invention belongs to the field of copper processing, relating to the process method of the production of copper strip material, and in addition, relating to a copper strip material continuous extrusion and continuous rolling device. The invention provides a continuous extrusion and continuous rolling method used for producing oxygen-free copper strip billet, comprising the following steps: taking the oxygen-free copper rod as a raw material to carry out continuous extrusion to obtain the copper slabs; utilizing the heat generated in extrusion to carry out continuous hot rolling on the copper slabs; and cooling the copper bandlets after hot rolling, discharging to obtain the copper strips, wherein protective gas is adopted to protect the space between the extrusion outlet and the cooling inlet. The invention combines the advantages of low content of oxygen of the upper-draw process, great deformation of the continuous extrusion method and good performance of hot rolling method; the product has the advantages of low content of oxygen, compact organization, fine grains and excellent comprehensive performance; and the process method has the advantages of short flow, less heating and annealing processes, energy saving and environmental protection and the like.
Owner:大连康丰科技有限公司

Multi-core reducing multi-ladle co-casting method and device for casting large composite steel ingots

The invention discloses a multi-core reducing multi-ladle co-casting method and device for composite casting large composite steel ingots. The multi-core reducing multi-ladle co-casting method comprises the steps of selecting core blanks, regulating the temperatures of the core blanks, re-removing scales on the surfaces of the core blanks, assembling the core blanks and ingot molds, reducing oxide scales on the surfaces of the core blanks, casting and compositing and cooling composite ingots. The device adopted by the method comprises a tank body, a reducing gas inlet, a heat preservation layer, bolts, a bin door, risers, heat insulation plates, the steel ingot molds, the core blanks, shims, a trolley, an inert gas inlet, a bottom heat insulation layer, an exhaust port, an explosion-proof end cap, a vacuum exhaust valve, a vacuum pump, circulating fans, riser bricks, casting channels, sealing valve rods, sealing valve bodies, sealing valve plates, sealing asbestos, sliding nozzles and steel ladles. Large and ultra-large molded steel ingots which cannot be produced by means of an orthodox casting method can be manufactured. The steel ingots manufactured by means of the multi-core reducing multi-ladle co-casting method and device has the advantages of being low in production cost, high in solidification speed, small in internal segregation, even in components and high in finished product rate.
Owner:佛山市金禾精密模具有限公司

Induction heater and method for realizing non-preheating cladding of alloy on steel rail by using same

The invention discloses an induction heater which comprises a heating zone 1 and a heating zone 2, wherein the heating zone 1 is divided into two heating surfaces; a first heating surface is shaped like a trapezoid without the bottom; a second heating surface is a U-shaped one; the two lateral sides of the trapezoid-shaped heating surface are connected with the U-shaped heating surface; and an included angle is formed between the first heating surface and the second heating surface. When the induction heater is used to perform alloy cladding on a steel rail, preheating does not need to be performed in advance, so that on the premise of the same steel rail cladding speed, heat energy required by the method is only one third or less of the prior art; and meanwhile, the method lays a foundation for miniaturization of a generator or even construction without the aid of a rail car. By performing detailed analysis on structure phase change and heat transmission of a steel rail in the cladding process, the invention breaks through the theory that the steel rail must be preheated prior to welding for the first time, and presents that the steel rail can be directly subjected to alloy cladding without being preheated while generation of martensite can be avoided. The technology disclosed by the invention is put forward for the first time at home and abroad.
Owner:CHENGDU ZHONGGUI TECH CO LTD

Air source heat pump floor heating system

The invention discloses an air source heat pump floor heating system which comprises a circulating water module, an air source heat pump, a heating water tank, a tail end floor heating module, a water pump, an electric heating module, an electromagnetic valve, an expansion tank, a temperature sensor and a controller. An inlet of the circulating water module is connected with the expansion tank, the expansion tank is connected with an inlet of the water pump, an outlet of the water pump is connected with an inlet of the air source heat pump, and an outlet of the air source heat pump is connected with an inlet of the heating water tank. According to the air source heat pump floor heating system, the frequency of the adopted water pump can be automatically adjusted according to the probability of indoor opening, the main engine starting and stopping frequency caused in the circumstance of the large heating capacity of an indoor low load device can be easily reduced, the speed of decreasing of the overall water temperature can be reduced in a defrosting mode, the floor can be heated more rapidly in the primary heating period of a floor heating system, waiting time of users is shortened, and the pressure of the system cannot be reduced in the circumstance that outside water pressure is insufficient.
Owner:QUANTUM ENERGY TECH SUZHOU

Process and device for distilling and separating isoamylol isomeride by heat pump

The invention relates to a process and a device for distilling and separating isoamylol isomeride by a heat pump. The device comprises a distilling tower, the heat pump, a reboiler, a buffer tank, a driving heat exchanger and a reflux pump. The distilling tower is provided with a tower top vapor phase port and a tower top discharge outlet, the tower top vapor phase port is hermetically connected with an inlet of the heat pump through a pipeline, the reboiler is provided with a shell pass inlet, a shell pass outlet, a pipe pass inlet and a pipe pass outlet, the shell pass inlet is hermetically connected with the heat pump through a pipeline, the pipe pass inlet of the reboiler is hermetically connected with a tower bottom of the distilling tower, the pipe pass outlet is connected with a vapor phase port on the lower portion of the distilling tower through a pipeline, and the shell pass outlet is connected with the buffer tank. The bottom of the buffer tank is provided with a liquid phase discharge outlet which is connected with an inlet of the reflux pump. An outlet of the reflux pump is divided into two material flows, one is connected with a tower top reflux port of the distilling tower through a pipeline, and the other one is used as discharge on the tower top.
Owner:山东凯利生物科技有限公司
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