▎ 摘　　要

NOVELTY - Formation of U-shaped support involves (S101) adding each chemical component to the smelting furnace for smelting according to the formula, and keeping the temperature for 20-30 minutes, (S102) adding a refining agent to the alloy melt, injecting an inert gas for refining, and sequentially removing slag and filtering, (S103) pouring the alloy melt into the mold, then performing vacuum die-casting, and demolding after cooling, (S104) normalizing, tempering and annealing on the blank in sequence, (S105) flanging according to design requirements, and (S106) trimming, shaping, punching, and edge trimming on the workpiece that has been flanged and formed in step (S105). USE - Formation of U-shaped support used for automobile (claimed). ADVANTAGE - The method enables formation of the U-shaped support having high product qualification rate and processing efficiency, can effectively improve the quality stability of the product, and improve the mechanical strength and corrosion resistance of the product.