| 摘要 |
A seat back frame of a vehicle using a magnesium alloy results in a seat back frame having the properties of a conventional steel press seat back frame. The seat back frame is reinforced regarding its strength and tapers from wider at the lower portion to thinner toward a head rest. The advantageous properties of the alloy seat, such as weight and castability, are much improved over the conventional. The method of molding such a seat back frame include molding the alloy into a mold via even disbursement about a casting gate.
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