Performance Charts. Graco 3A8476A, SST Switch3D Gun
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19.00
18.00
17.00
16.00
F IG . 42
22.00
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20.00
Performance Charts
Performance Charts
Pattern Width Versus Spray Stream Style Nozzle Sizes
The following tests were performed using a typical PVC
• 600,000 centipose
• Specific gravity 0.82
The graph below shows a fixed flow rate of 9.4 cc / sec and a fixed robot speed of 300 mm / sec.
Pattern Width Versus Nozzle Sizes
17V673
17V669
Smaller
17V674
17V670
Orifice Size
17V675
17V671
Larger
17V676
17V672
Nozzle
Width
0.03 mm
0.038 mm
40 3A8476A
2,000
1,800
1,600
1,400
1,200
1,000
800
600
Performance Charts
Material Pressure Versus Spray Stream Style Nozzle Sizes
The graph below represents the pressures for each tip to achieve the width shown in the
the pressure limitation of the metering equipment. See F IG . 43.
17V669
Material Pressure Versus Nozzle Sizes
17V670
17V671
17V673
17V672
Smaller
17V674
Orifice Size
17V675
Larger
17V676
Nozzle
Width
0.03 mm
0.038 mm
F IG . 43
3A8476A 41
Performance Charts
Pattern Height / Width Versus cc/sec for Spray Stream Style
Nozzles
Pattern Height / width Versus cc/sec
30 3.0
25
20
15
9.4 cc/sec
11.8 cc/sec
10
5
0
1
17V676 Nozzle
2
F IG . 44
Bead Pattern Spray Stream Style
Nozzle
Distance from the target affects the quality of the boundary layer between the sealer and the metal surface. Excessive distance can trap air in-between the bead and the metal surface, which could result in
moisture penetrating between the layers. See F IG . 45**
14.1 cc/sec
3
Correct distance for clean bead pattern.
2.5
2.0
1.5
1.0
0.5
Width
Height
0
Excessive distance results in faulty bead pattern.*
F IG . 45
* Your results may vary.
** Heat curing may reduce this effect
42 3A8476A
Performance Charts
Pattern Thickness Versus flow Rate and Robot Speed for 0.50 mm
LASD Nozzle, 25U016
NOTE: Typical robot speed is 300mm/sec. Bead
Thickness is determined by robot speed.
0.50 mm LASD Tip
F IG . 46
145
135
125
115
105
95
85
75
65
45 55
Better Quality
Bead
65
Lesser Quality
Bead
75 85 95 105
Dispense Height (mm)
115 125
3000 cc/m in.
3000 cc/m in.
3000 cc/m in.
3A8476A 43
Performance Charts
Pattern Thickness Versus flow Rate and Robot Speed for 0.40 mm
LASD Nozzle, 25U017
NOTE: Typical robot speed is 300mm/sec. Bead Thickness is determined by robot speed.
0.40 mm LASD Tip
175
165
155
145
135
125
115
105
95
85
75
45 55
Better Quality
Bead
65 75 85 95
Lesser Quality
Bead
Dispense Height (mm)
105 115
F IG . 47
Spray Pattern LASD Nozzle
The width of the bead is consistent with the height above the surface. The thickness of the bead depends
on the speed of the robot. See F IG . 48.
125
3000 cc/m in.
3000 cc/m in.
3000 cc/m in.
3.98 in
100 mm Bead thickness
+_
+_
F IG . 48
44 3A8476A

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