Novel magnesian steering supporting structure
A support structure and magnesium technology, applied in the field of new magnesium steering support structures, can solve the problems of poor surface quality and strength, and achieve the effects of good surface quality, high efficiency and high dimensional accuracy
Inactive Publication Date: 2018-03-09
何志杰
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Problems solved by technology
[0004] In order to overcome the problems of poor strength and poor surface quality of the existing steering support structure, the present invention provides a new type of magnesium steering support structure. This new type of magnesium steering support structure has good support strength and improves its own work ability; on the basis of ensuring the working ability, the quality of the supporting structure is reduced
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[0010] Preferably, according to the structural characteristics of the casting, the inner gate can only be arranged along the outer wall along the length direction of the beam, which is more reasonable, and the selection of the gate position is too single, which restricts the flexibility of the gating system design.
[0011] Preferably, the mold filling flow distance of the middle support is farther than other positions, reaching 473mm, which prevents defects such as insufficient cold insulation pouring due to the rapid drop in the temperature of the molten metal at the far end of the mold filling.
[0012] Preferably, the cavity at the position of the steering column mounting bracket is relatively deep, which is 225mm.
[0013] Preferably, the piece is a large-scale magnesium alloy die-casting, and multi-gates are used to fill the mold in different areas, which prevents convection of the molten metal entering each inner gate.
[0014] Preferably, the casting structure is relat...
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The invention provides a novel magnesian steering supporting structure. The novel magnesian steering supporting structure is composed of a supporting plate, reinforcing ribs and the like. A cross beamis subjected to parting along the upper end face of the cross beam. A middle support is subjected to parting along stiffened edges, on the two inclined sides of the joints between the middle supportand the cross beam, of the upper end face of the cross beam. A safety airbag is subjected to parting along the bottom mounting surface of the safety airbag. A BCM bracket is subjected to parting at anupper mounting surface parallel to the upper end face of the cross beam. In view of the problems that when the filling speed is low, casting filling is incomplete, and when the mold filling speed ishigh, molten metal mold filling is not stable and blowhole defects are formed easily, the filling speed of a magnesium alloy is generally set to be 40 m / s-90 m / s according to the complexity degree andwall thickness of a casting. The injection speed can be divided into the low injection speed and the high injection speed. Slow injection is selected when molten metal is filled up into a pressure chamber and a pouring gate. Fast injection is selected for filling the molten metal through an inner gate to form the casting. The injection speed can be adjusted according to the characteristics of a die-casting machine and the mold filling speed of the casting. The molding filling flow distance of the middle support reaches 473 mm and is greater than the distance from other positions. The defectsof cold shut insufficiency caused by too quick temperature falling of molten metal at the mold filling far end are avoided.
Description
Technical field [0001] The invention relates to a novel magnesia steering support structure, which is especially used in the foundry processing industry. Background technique [0002] With the rapid development of the economy, the problem of energy shortage is becoming more and more obvious. All industries are advocating energy conservation and emission reduction. Especially in the field of manufacturing industry, the urgent task is to improve energy utilization, reduce energy consumption and environmental pollution. A very effective method is to carry out lightweight design on the product, which has become a development trend to achieve product weight reduction. The automobile industry is a major player in energy consumption and exhaust emissions. Energy conservation and emission reduction are the responsibilities that the industry must fulfill, and weight reduction has become the focus of its technological development. At present, the methods used by most automobile compa...
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IPC IPC(8): B22D17/22B22D17/00
CPCB22D17/22B22D17/00
Inventor 何志杰
Owner 何志杰