Method for casting and producing automobile cast-steel hubs by using V method
A technology for the production of automobile wheels and castings, which is applied in the direction of casting molding equipment, casting molds, and casting mold components. It can solve the problems of increased blank weight, high production costs of cast steel wheels, and affecting the overall performance and economic benefits of trucks. The effect of improving quality, improving process yield and pass rate
Inactive Publication Date: 2012-10-24
济南中森机械制造有限公司
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Problems solved by technology
[0002] For a long time, due to structural material design and other reasons, the traditional wheel hub has caused fracture failure, which affects the overall performance of the truck and the economic benefits of the user. The claim for cast iron wheel hub failure has become a large item of expenditure for automobile manufacturers.
[0003] At present, the blanks of automobile hubs are generally made of ductile iron. The fatigue resistance and comprehensive mechanical properties of ductile iron are lower than those of cast steel. Low production cost of cast steel hub is much higher than that of cast iron hub. To replace cast iron hub with cast steel hub, the above three problems must be solved
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[0023] Such as figure 1 As shown, the automobile hub 2 is a rotating body with a hole in the center and a flange in the middle, the part above the flange on the automobile hub 2 is the upper bearing seat, and the part below the flange on the automobile hub 2 is the lower bearing seat , The wall thickness of the lower bearing seat is smaller than that of the upper bearing seat.
[0024] This specific embodiment records a kind of V method casting production figure 1 The method for casting steel automobile wheel hub shown, described method comprises the steps:
[0025] (1) Manufacture sand core 1 corresponding to the shape of the inner cavity of the automobile wheel hub and sand core 2 3 corresponding to the shape of the lower bearing seat of the automobile wheel hub. The side of the side is provided with the side runner that communicates with inrunner 4, and inrunner 4 communicates with the bottom of the mold cavity of sand core two 3, and ingate 4 is positioned at the tangent...
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The invention discloses a method for casting and producing automobile cast-steel hubs by using a V method. A transverse ingate is arranged at the bottom of a second sand core, a side pouring gate which is communicated with the ingate is arranged on a side of the second sand core, and the ingate is communicated with the bottom of a cavity of the second sand core, and is positioned in a tangential direction of the cavity of the second sand core; a sprue and a pouring gate are arranged in a cope box, a cavity for mounting the second sand core is arranged in a drag box, and a cross gate is arranged on a parting surface of the drag box; and liquid steel is added from the pouring gate, and flows through the sprue, the cross gate, the side pouring gate and the ingate to tangentially enter the cavity, and spirally rises in the cavity from bottom to top until the cavity is filled with the liquid steel, the cope box and the drag box keep in a negative pressure state during pouring, and the negative pressure state of the cope box and the drag box are kept for a certain period of time after pouring is finished. The method effectively solves the problem that oxidized scum and other impurities in the liquid steel float upwards in a pouring process, and the cavity of a mold is integrally filled well.
Description
technical field [0001] The invention relates to a method for producing automobile wheel hubs, in particular to a method for producing cast steel automobile wheel hubs by V casting. Background technique [0002] For a long time, due to structural material design and other reasons, the traditional wheel hub has caused fracture failure, which affects the overall performance of the truck and the economic benefits of users. The claim for cast iron wheel hub failure has become a large item of expenditure for automobile manufacturers. [0003] At present, the blanks of automobile hubs are generally made of ductile iron. The fatigue resistance and comprehensive mechanical properties of ductile iron are lower than those of cast steel. The low production cost of cast steel hubs is much higher than that of cast iron hubs. To replace cast iron hubs with cast steel hubs, the above three major problems must be solved. Contents of the invention [0004] The technical problem to be solve...
Claims
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IPC IPC(8): B22C9/28B22D18/06
Inventor 崔健高永庆吴建庆
Owner 济南中森机械制造有限公司