Method and device for preparing semi-solid metal slurry through efficient chilling at low degree of superheat
A technology of semi-solid metal and superheat, which is applied in the field of semi-solid metal slurry and equipment prepared by high-efficiency chilling with low superheat, can solve the problems of lack of industrialization demonstration, long process flow, high production cost, etc., and achieve easy automation or manpower Machine-integrated production, less investment, high production efficiency
Active Publication Date: 2015-01-07
慈溪汇丽机电股份有限公司
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[0005] In order to overcome the shortcomings of high production cost, lack of industrialization demonstration and too long process flow in the existing semi-solid metal slurry preparation method, the present invention provides a low-pass method capable of quickly and quantitatively preparing medium or low solid fraction on-line. Method and device for preparing semi-solid metal slurry by thermally efficient chilling
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[0036] refer to Figure 1 to Figure 6 , a method for preparing a semi-solid metal slurry by high-efficiency chilling with low superheat, the steps of the method are:
[0037] (1) Determine the temperature of metal smelting: control the superheat of the liquid metal within the range of 50~70°C during smelting, then refine the liquid metal, stand still after refining, remove slag and measure the gas content, and finally the liquid metal The superheat is controlled within the range of 10~30℃;
[0038] (2) Quantitatively take soup: preheat the spoon, determine the amount of soup to be taken according to the sum of the weight of the casting, slag collecting bag, pouring system and material cake, and pour the taken soup into the preheated preparation crucible 21;
[0039] (3) Preparation of semi-solid slurry: After the preparation crucible 21 is filled with the given soup, start the switch of the slurry preparation system to lower the hollow rod 10 into the preparation crucible 21....
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The invention discloses a method and a device for preparing semi-solid metal slurry through efficient chilling at low degree of superheat. The device comprises a quantitative fluid taking machine matched with a preparation crucible, wherein a temperature sensor for measuring the temperature of molten metal is arranged in the preparation crucible; the device also comprises a slurry preparation system, a dumping system and a control system; the control system controls the slurry preparation system and the dumping system; the slurry preparation system comprises a first support frame and an elevator mechanism, a rotating mechanism and a chilling system, which are arranged on the first support frame; the chilling system comprises a hollow rod with a blind hole; an air pipe for conveying refrigerants is introduced into the hollow rod; the hollow rod is connected with the rotating mechanism and the elevator mechanism; and the dumping system is connected with the preparation crucible to dump the molten metal in the preparation crucible. The device is low in investment and high in production efficiency.
Description
technical field [0001] The invention relates to a method and device for preparing semi-solid metal slurry by high-efficiency quenching with low superheat. Background technique [0002] In semi-solid metal (or alloy) forming technology, the preparation of semi-solid metal slurry or billet with spherical primary phase is at the core. Reducing the preparation cost of slurry and shortening its process flow is the development direction of semi-solid metal forming technology at present and in the next few years, and rapid preparation of slurry online is the focus of engineering and industrialization of this technology. [0003] At present, the existing semi-solid metal slurry preparation methods (including special equipment or equipment for pulping) mainly include the following: mechanical stirring method, electromagnetic stirring method, inclined plate method, liquidus casting method, chemical grain refinement Chemical method, rotating drum method, ultrasonic treatment method, s...
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IPC IPC(8): C22C1/00B22D17/30
Inventor 陈正周徐步银罗军宇
Owner 慈溪汇丽机电股份有限公司