Design and using method of combined type insulating riser sleeve for casting steel casting of revolving body
A heat-insulating riser sleeve and combined technology, which is applied to casting molding equipment, molds, mold components, etc., can solve the problems of high cost, large space occupation and high cost of fan-shaped riser sleeves, and achieve orderly management. The effect of reducing production costs and simplifying the pouring process
Inactive Publication Date: 2011-07-13
CITIC HEAVY INDUSTRIES CO LTD
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Problems solved by technology
[0004] There are also fan-shaped riser sleeves. Although the process is simplified, a set of molds for making riser sleeves is required due to the size of the riser sleeves for steel castings of different sizes and different rim thicknesses. Therefore, fan-shaped riser sleeves are used. The cost is high, especially for single-piece, small-batch production of steel castings.
[0005] There are many types of molds formed by full-circle riser sleeves and fan-shaped riser sleeves, which take up a lot of space, which adds difficulty to the orderly management of on-site production
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[0026] Usually, rotary steel castings such as tires, flanges, and ring gears have specific maximum outer rim diameters and minimum inner rim diameters regardless of their shape and size, and considering the casting characteristics of rotary steel castings, it is necessary to reserve There are increments of the largest outer rim and decrements of the smallest inner rim, where the diameter of the largest outer rim and the smallest diameter of the inner rim are determined according to the design drawings of the steel to be cast, the increment of the largest outer rim and the smallest inner rim The reduction is determined according to casting requirements (experience), and then according to the casting process manual or experience, a certain amount of scaling ratio is reserved for the riser sleeve and a certain amount of processing allowance is reserved for subsequent machining. Therefore the largest outer rim diameter, the smallest inner rim diameter, the increment of the largest ...
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The invention discloses a design and using method of a combined type insulating riser sleeve for casting a steel casting of a revolving body. The combined type insulating riser sleeve comprises an outer ring arc plate (1), an inner ring arc plate (2), a left positioning baffle (3) and a right positioning baffle (4). The arc curvature diameter D of the outer ring arc plate can form 12 outer-diameter series standard values and 5 arc-length series standard values. The arc curvature diameter d of the inner ring arc plate can form 12 outer-diameter series standard values and corresponding arc lengths. The left positioning baffle and the right positioning baffle are structurally symmetrical, and the total length of the left positioning baffle and the right positioning baffle can form L-series standard values. The combined type insulating riser sleeve disclosed by the invention not only simplifies the pouring process of the steel casting of the revolving body, but also lowers the production cost and can reduce hundreds of types of insulating riser sleeves to dozens of types, thereby facilitating ordered management of the field production.
Description
technical field [0001] The invention belongs to the technical field of casting accessories, and in particular relates to a method for designing and using a combined thermal insulation riser sleeve for casting steel castings of a revolving body. Background technique [0002] The thermal insulation riser sleeve is mainly used for the thermal insulation of molten steel after casting steel castings, which can slow down the critical solidification time of molten steel in the riser, prolong the feeding of molten steel to the steel casting body, form sequential solidification, ensure the internal quality of steel castings, and improve Utilization of molten steel. [0003] For the insulation riser sleeves of steel castings such as tires, flanges, and ring gears, the entire circle of riser sleeves is usually used. The entire circle of riser sleeves is surrounded by plate-shaped insulation boards, and the insulation boards cannot stand upright on the mold. To hammer the molding sand,...
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Inventor 石秀娟付学志苗小岑赵永让岳宗格
Owner CITIC HEAVY INDUSTRIES CO LTD