A kind of manufacturing method of ceramic sprue cup for casting
A manufacturing method and sprue cup technology, which are applied to casting equipment, casting molding equipment, casting molten material containers, etc., can solve the problems of low production efficiency and high production cost, improve strength and service life, reduce costs, and reduce running The effect of the risk of fire
Active Publication Date: 2017-08-25
KOCEL EQUIP
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Problems solved by technology
Therefore, the commonly used sprue cup is made of resin sand. This kind of sprue cup is disposable, with low production efficiency and high production cost.
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[0008] In the embodiment of the present invention to make as figure 1 The pear-shaped sprue cup shown is taken as an example. In the manufacturing method of the ceramic sprue cup for casting, bauxite and steel wire fibers are used to sinter, and the weight amount of steel wire fibers accounts for 10-20% of the total weight of the material. Soil is ground into 50-70 mesh powder, Al in bauxite 2 o 3 content greater than 70%. The steel wire diameter of the steel wire fiber is φ1-2mm, and the pellets are cut into 30-40mm long; mix the bauxite and the steel wire fiber evenly, then add water with 10-15% of the total weight of the mixture and stir evenly to form a mud, and use the sprue cup mold Make the sprue cup mud mold, then transfer to the sintering furnace, raise the temperature to 1500±30°C at a heating rate of 25-35°C / h, keep it warm for 15-20 days, and then reduce the temperature at a cooling rate of 25-35°C / h room temperature; the outer periphery of the ceramic sprue cup...
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The invention relates to a manufacturing method of a ceramic sprue cup for casting in the technical field of casting gating systems. The ceramic sprue cup is sintered by alumina and steel wire fibers, and the weight consumption of the steel wire fibers accounts for 10% of the total weight of the material. —20%: the bauxite is ground into 50-70 mesh powder, the steel wire diameter of the steel wire fiber is φ1-2mm, and the shot is cut into 30-40mm long; the bauxite and the steel wire fiber are mixed evenly, and then the total weight of the mixture is added 10-15% water is stirred evenly and becomes muddy, and the sprue cup mud mold is made with the help of the sprue cup mold, and then transferred to the sintering furnace, the temperature is raised to 1500±30°C at a heating rate of 25-35°C / h, and the temperature is kept 15-20 days, and then lower the temperature to room temperature at a rate of 25-35°C / h to make a ceramic sprue cup; cover the outer periphery of the sintered ceramic sprue cup with a layer of iron sheet. The ceramic sprue cup produced by the method of the invention has low manufacturing cost and long service life, and can be used repeatedly for 40-50 times.
Description
technical field [0001] The invention relates to the technical field of casting pouring systems, in particular to a method for manufacturing a ceramic sprue cup for casting. Background technique [0002] In casting, the function of the sprue cup is to receive the molten metal from the ladle. On the one hand, it plays the role of drainage, preventing splashing and overflowing, so as to facilitate pouring; on the other hand, it reduces the direct impact of the molten metal on the mold; Part of the slag and impurities can be skimmed in the sprue cup to prevent them from entering the sprue. Therefore, the commonly used sprue cup is made of resin sand. This sprue cup is disposable, with low production efficiency and high production cost. Contents of the invention [0003] The object of the present invention is to provide a manufacturing method of a ceramic sprue cup for casting that can be used repeatedly, so as to reduce the production cost of the sprue cup and improve the qua...
Claims
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IPC IPC(8): B22C9/08B22D41/00
Inventor 程行东王蒙柴润川
Owner KOCEL EQUIP