Proto-mold help many Automobile customers to make the scope of sheet metal parts. For example : Front cover, rear cover, roof, left front wing panel, right front wing panel, left rear wing panel, right rear wing panel, left front door, left rear door, right front door, right rear door; In addition, there are sheet metal parts on the left of the A column, B column, C column, the lower left threshold, the right of the A column, B column, C column, the lower right threshold; Then there are the left and right rail on both sides of the engine compartment, the front bar skeleton, the rear plate inside the rear bar, and the rear bar skeleton.
Automotive sheet metal material group to be divided into two categories: ferrous metals and non-ferrous metals. Due to performance and price reasons, ferrous metal consumption accounted for 90%, non-ferrous metals accounted for only 10%.
Body sheet metal mainly carbon steel, alloy steel, cast iron, non-ferrous metals and various alloys, non-metallic materials and composite materials.
And the most widely used, the most basic is steel plate, steel plate according to the quality classification can be divided into low carbon steel, medium carbon steel and high carbon steel. The carbon content of low carbon steel is less than 0.25%, the carbon content of medium carbon steel is between 0.25%-0.6%, and the carbon content of high carbon steel is greater than 0.6%.
At present, the sheet metal base material used by major oEMS is mostly steel plate. In order to meet performance requirements, galvanized steel is mostly used. And there are two main means of galvanized steel plate: hot dip galvanized and electric galvanized:
uniform gray, mainly imported, fingerprint resistant, with excellent corrosion resistance, and maintain the processability of cold rolled sheet.
dip plated, bright white, small zinc flower, in fact, it is difficult to see the zinc flower, the large zinc flower is very obvious to see the hexagonal flower block.
Electrogalvanizing and hot-dip galvanizing, the former coating is thinner than the latter
D: Cold-formed flat steel
X: hot rolling C: cold rolling
51-57: The higher the number, the better the stamping performance
D: indicates galvanized
Z: Pure galvanized
H300LAD+Z: Low alloy high strength steel
H340LAD+Z: Cold formed high strength steel
H380LAD+Z: Galvanized coil
22MnB5: Pickling hot formed high strength steel