ApplicationCâu 71 / 100
Why should airless spray tips be selected based on the coating and orifice size/fan width?
a.Tip size and fan width control flow rate and pattern; the wrong tip causes poor atomization, uneven film, or excess overspray
b.Tip size only affects the paint color
c.All tips spray every coating identically
d.Tip choice has no effect on finish quality
Giải thích
Airless tips are rated by orifice size (flow) and fan angle (pattern width), and they must match the material's viscosity and the surface. A tip too large for a thin coating floods the surface, while a worn or wrong tip causes tails, stripes, and orange peel. Selecting and maintaining the correct tip is key to a quality sprayed finish.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
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