Developments in automotive-grade galvanized plate at home and abroad
Automotive products with high efficiency, high reliability, high integration requirements of automotiv
e galvanized steel sheet is galvanized steel in the boutique and the best.
Since 1975 the United States for the first time the hot galvanized plate is applied 20 years of automo
bile industry, the world's automobile production major powers in their efforts to prevent corrosion resea
rch and development as the goal, and considering the welding, coating and high moldability quality hot ga
lvanized plate, and made a series of technological advances, including the chemical composition of the st
eel substrate, rolled steel surface quality, uniformity galvanized coating thickness, alloyed optimal str
ucture and a process control series of technical problems.
After 20 years of research, the above-
mentioned technical problems and to complete the technical requirements of this technology and equipment
has basically been resolved and start widely used in automobiles, the successful application of these tec
hniques can greatly improve the car working condition, prolong life and save energy.
High surface quality, high strength and profound impulse of a car panel must have the basic conditions
, the quality of the coating surface roughness and sheet surface quality, cleanliness, chemical compositi
on and stamping strip has a direct relationship, while Redu craft, zinc liquid composition, hot dip coati
ng surface equipment is an important factor affecting the quality.
High strength and high resistance and galvanized stamping chemical composition, physical properties, h
eat treatment and hot-
dip performance board are closely related, the following discussion will focus on foreign and domestic ca
rs with high-
speed hot galvanized plate coated varieties, substrates, processes and development Status and Trends of e
quipment and so on.
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