Binks Spray Tips

1
Binks Spray Tips

• July 2010

2
(No Transcript)
3
Surface Preparation - General

• Anything you dont want to see in the final
  finish must be removed from the surface
• Surface must be clean
• Lint Dirt Oil
• Contaminant
• Substrate determines pretreatment
• The greatest single cause of paint failure is
• poor surface preparation

4
Surface Preparation - Trash Defect
5
Introduction - Why Spray?

• Increase Quality
• Increase Production
• Reduce Costs - Paint and Labor
• Government Regulations
• Coatings Change
• Maintenance Reduction

6
Introduction - Have we changed?
7
Coatings - Wet Film Thickness Gauge
8
Viscosity - Characteristics

• The Property Of Liquid Which Enables It To Resist
  Flow
• Measured By The Time Required For A Given Volume
  Of Liquid To Flow Through A Small Hole In The
  Bottom Of A Metal Cup Under Controlled
  Conditions.
• Standardized at 77o F

9
Viscosity - Cups

• Accuracy Is Best In Middle
• Of Cups Range
• Types Of Cups
• Ford
• Fischer
• Zahn
• DIN
• Others

10
Viscosity - Cups

• Accuracy Is Best In Middle
• Of Cups Range
• Types Of Cups
• Ford
• Fischer
• Zahn
• DIN
• Others

11
Viscosity - Cups Range Specifications
Zahn 1 31- 60 Ford 2 37 - 110 Zahn 2 19-
60 Ford 3 23 - 110 Zahn 3 11 - 60 Ford 4 16 -
120 Zahn 4 10 - 60 Zahn 5 10 - 60 All times in
seconds Gardner Company
12
Viscosity - Cups Range Specifications
Zahn 1 31- 60 Ford 2 37 - 110 Zahn 2 19-
60 Ford 3 23 - 110 Zahn 3 11 - 60 Ford 4 16 -
120 Zahn 4 10 - 60 Zahn 5 10 - 60 All times in
seconds Gardner Company
13
Viscosity - Timing
14
Atomization - External Mix Air Cap
15
Atomization - Air Cap Ratings

• Type
• Pressure
• Suction
• Finish Material
• Type
• Viscosity
• Flow Rate
• Operating Pressure Range
• Air Volume (CFM) Required

16
Atomization - Internal vs External Mix Caps
Internal External
17
Air Spray Guns - Three Ways To Feed

• Suction Feed
• Gravity Feed
• Pressure Feed

18
Air Spray Guns Fluid Feed Types
Suction Gravity
Pressure
19
Air Spray Guns Major Components
20
Atomization - Nozzle Combination
21
Atomization - Suction vs Pressure Feed Cap
Suction Pressure
22
Atomization - Air Cap Selection

• Volume of air (CFM) available
• Material feed system suction or pressure
• Type and volume of material to be sprayed
• Size of fluid tip
• Size and nature of object being sprayed
• (Pattern size)

23
Spray Gun Technique - Arcing
24
Spray Gun Technique Too Far / Too Close
25
Spray Gun Technique - Gun Distances
26
Spray Gun Technique Tilting the Gun
27
Spray Gun Technique - Vertical
28
Spray Gun Technique - Pattern Size
29
Spray Gun Technique - Open Work
30
Spray Gun Technique - Horizontal
31
Spray Gun Technique - Wide Mat'l
32
Spray Gun Technique - Corners
33
Troubleshooting - Spray Gun
Fluid Leaking from Packing Nut Packing nut
loose Packing worn or dry Air leaking from front
of gun Sticking air valve stem Foreign matter on
air valve or seat Worn or damaged air valve or
seat Broken air valve spring Bent valve stem Air
valve gasket damaged or missing
34
Troubleshooting - Spray Gun
Fluid Leaking from Front of Gun Packing nut too
tight. Fluid tip or needle worn or
damaged Foreign matter in tip Fluid needle spring
broken Wrong size needle or tip Dry packing
35
Troubleshooting - Spray Gun
Fluttering Material Level Low Fluid Passage
Obstruction Loose or damaged fluid tip/seat Dry
or loose needle packing Material too heavy
(suction) Air vent clogged (suction)
36
Troubleshooting - Patterns
Right/Left - Top/Bottom Heavy Reverse the air cap
180o. If the problem reverses, the problem is
with the air cap. If not, the problem is with the
fluid tip/needle.
37
Troubleshooting - Patterns
Center Heavy Spreader adjustment in too
far Atomizing pressure too low Fluid pressure too
high Fluid tip incorrect size for material and
flow
38
Troubleshooting - Patterns
Split Pattern Fluid needle adjustment in too
far Atomization air too high Fluid pressure too
low
39
Spray Gun Maintenance Rule 1
40
Spray Gun Maintenance - Lubrication
Use Spray Gun Lubricant
41
Spray Gun Maintenance - Air Cap
42
(No Transcript)
43
(No Transcript)
44
(No Transcript)
45
(No Transcript)
46
(No Transcript)
47
(No Transcript)
48
(No Transcript)
49
(No Transcript)
50
(No Transcript)
51
(No Transcript)