Mold for casting joint and method for casting joint
A technology of casting joints and molds, which is applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of low process yield rate, low utilization rate of molten iron, and scrapped joint materials, so as to improve the yield rate and reduce the ratio of sand to iron , Reduce the effect of pouring time
Active Publication Date: 2020-05-01
CRRC CHANGZHOU AUTO PARTS CO LTD +1
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Problems solved by technology
[0003] The traditional joint casting method is to use the conventional mold opening method, which does not use stacked boxes, only the upper sand mold and the lower sand mold, and the cavity parts are combined to form a casting (joint). The yield rate of this method is often low, and the iron-sand ratio is also low Low, relatively high casting cost
However, for small joints weighing less than 2kg, if the traditional casting method is used, the ratio of sand to iron is often high, and the utilization rate of molten iron is very low. The prolongation of the joint leads to the decline of spheroidization, which makes the joint material scrapped and there is a certain quality risk
Method used
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Embodiment 1
[0045] This embodiment provides a mold for casting joints, the structure of which is as follows figure 1 and figure 2 As shown, the mold 1 is composed of a static mold 1-1 and a movable mold 1-2 stacked front and back. Among them, the static mold 1-1 includes the static template 1-1-1 and the static mold core 1-1-2 embedded in the static template 1-1-1, and the dynamic mold 1-2 includes the dynamic template 1-2-1 and the embedded mold core 1-1-2. In the dynamic template 1-2-1, the dynamic mold core 1-2-2, the static mold core 1-1-2, and the dynamic mold core 1-2-2 are all female molds, and the static mold core 1-1-2 and the The movable mold core 1-2-2 offsets and forms a closed molding cavity, and the static mold plate 1-1-1 is also equipped with a feed port 1-1-3 connected with the molding cavity, and the static mold core 1-1 -2. The cross-sections of the movable mold core 1-2-2 are all cross-shaped structures, and the three ends of the static mold core 1-1-2 cross-shaped ...
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The invention relates to a joint casting mold. The mold is composed of a stationary mold body and a movable mold body, wherein the stationary mold body and the movable mold body are superposed in the front-back direction. The stationary mold body comprises a stationary mold plate and a stationary mold core, wherein the stationary mold core is inlaid in the stationary mold plate. The movable mold body comprises a movable mold plate and a movable mold core, wherein the movable mold core is inlaid in the movable mold plate. The stationary mold core abuts against the movable mold core, and a closed molding mold cavity is formed. The molding mold cavity comprises a joint cavity and a material guiding channel cavity, wherein the joint cavity and the material guiding channel cavity communicate with each other. A moving block can be arranged in the material guiding channel cavity. The joint casting mold has the beneficial effects that mold development cost is lowered, and the sand-iron ratio is reduced; in addition, the utilization ratio of molten iron is increased, the number of pouring boxes is decreased, and meanwhile, pouring time is shortened, so that balling of joints is guaranteed; and the yield of the joints is increased.
Description
technical field [0001] The invention relates to a casting method for a small joint of a turbocharger, belonging to the technical field of casting. Background technique [0002] With the continuous development of society, the turbocharger has become an indispensable accessory of the engine, and the turbocharger can increase engine power and improve economic performance. With the development of the turbocharger industry, most of the joints of turbocharger casings are now made of ductile iron. Therefore, the requirements for nodularization of joints are getting higher and higher, and material risk has become a red line for foundry companies. In addition, casting Cost has also become an important factor in determining the success or failure of an enterprise. [0003] The traditional joint casting method is to use the conventional mold opening method, which does not use stacked boxes, only the upper sand mold and the lower sand mold, and the cavity parts are combined to form a c...
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IPC IPC(8): B22C7/04B22C9/02B22C9/20
CPCB22C7/005B22C7/04B22C9/02B22C9/20
Inventor 陈呈祥刘军明李卫忠王学青
Owner CRRC CHANGZHOU AUTO PARTS CO LTD