Application第 71 / 100 题
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
解析
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.
免费刷完整 100 道题库 — 无需注册。
同考点相关题目
- What is 'cutting in' when painting a room?
- Why is adequate ventilation and lighting important during interior application?
- A specification calls for 5 mils wet film thickness. Which tool confirms this during application?
- What commonly causes 'brush marks' (ridges) to remain in a dried brushed finish?
- For an oil-based enamel on trim, which brush type is generally preferred?
- What is the benefit of 'boxing' (combining) multiple gallons of the same color into one larger container before starting?