Paint Technology Handbook - R. Talbert.pdf

(2457 KB) Pobierz
755241971.002.png
755241971.003.png 755241971.004.png
755241971.005.png
Contents
Preface .............................................................................
xiii
Author ..............................................................................
xv
Chapter 1 Part Preparation Processes and Equipment .........................
1
1.1
Cleaning ....................................................................
2
1.1.1
Types of Soil .....................................................
2
1.1.1.1
Rust Inhibitors ......................................
3
1.1.1.2
Shop Dirt ............................................
3
1.1.1.3
Carbon ...............................................
3
1.1.1.4
Oxidation ............................................
3
1.1.1.5
Wax ..................................................
4
1.1.1.6
Soaps ................................................
4
1.1.1.7
Polymers ............................................
4
1.1.1.8
Silicone ..............................................
4
1.1.2
Mechanical Cleaning ............................................
5
1.1.2.1
Blasting..............................................
5
1.1.2.2
Blast Media .........................................
7
1.1.2.3
Vibratory Cleaning or Tumbling ...................
9
1.1.3
Chemical Cleaning ..............................................
9
1.1.4
Chemical Cleaning Processes ...................................
9
1.1.4.1
Hand Wipe ..........................................
9
1.1.4.2
Immersion Cleaning ................................
10
1.1.4.3
Hand-Held Spray Wand ............................
10
1.1.4.4
Ultrasonic Cleaning .................................
11
1.1.4.5
Recirculating Spray Washers .......................
11
1.1.5
Common Industrial Chemical Cleaners ........................
13
1.1.5.1
Alkaline Cleaning ...................................
13
1.1.5.2
Neutral Cleaners ....................................
16
1.1.5.3
Acid Cleaners .......................................
16
1.1.6
Surfactants .......................................................
17
1.1.7
Factors that Affect the Performance of the Cleaner ............
19
1.1.7.1
Quality of Water Supply ............................
19
1.1.7.2
Soils in Solution ....................................
20
1.1.7.3
Time .................................................
20
1.1.7.4
Temperature .........................................
20
1.1.7.5
Spray Pressure ......................................
20
1.1.7.6
Concentration .......................................
21
iii
755241971.001.png
iv
Contents
1.1.8
Methods Used to Measure Cleaning Results ...................
21
1.1.9
Summary .........................................................
22
1.2
Conversion Coatings .......................................................
22
1.2.1
Iron Phosphate ...................................................
23
1.2.2
Coating Weight ..................................................
24
1.2.3
Iron Phosphate Controls .........................................
24
1.2.3.1
Temperature .........................................
25
1.2.3.2
Chemical Concentration ............................
25
1.2.3.3
Acid Consumed .....................................
25
1.2.4
Zinc Phosphate ..................................................
25
1.2.5
Activating (Prior to Zinc Phosphate) ............................
26
1.2.6
Comparison of Iron Phosphate to Zinc Phosphate .............
27
1.3
Rinsing .....................................................................
28
1.3.1
Rinse and Rinse Seal ............................................
29
1.3.2
Reverse Osmosis (RO) or Deionized (DI) Water Rinse .......
30
1.4
Typical Spray Washer Systems ............................................
32
1.4.1
Stages of Pretreatment...........................................
32
1.5
Substrates ...................................................................
34
1.5.1
Metal Substrates .................................................
34
1.5.1.1
Steel .................................................
35
1.5.1.2
Aluminum ...........................................
38
1.5.2
Plastic Substrates ................................................
38
1.5.3
Wood Substrates .................................................
39
1.6
Washer Design .............................................................
39
1.6.1
Washer Components ............................................
40
1.6.1.1
Solution Tanks ......................................
40
1.6.1.2
Drainage Spaces ....................................
40
1.6.1.3
Tank and Housing Materials .......................
41
1.6.1.4
Zinc Phosphate Tank ...............................
42
1.6.1.5
Sludge Removal Tank ..............................
42
1.6.1.6
Access Doors, Ladders, and Lighting ..............
42
1.6.1.7
Pumps ...............................................
43
1.6.1.8
Nozzles ..............................................
43
1.6.2
Water Conservation .............................................
44
1.7
Washer Maintenance and Control .........................................
45
1.7.1
Mechanical Maintenance ........................................
45
1.7.2
Chemical Maintenance ..........................................
47
1.7.2.1
TDS ..................................................
48
1.7.2.2
Temperature .........................................
48
1.7.2.3
pH Measurement ....................................
48
1.7.2.4
Washer Control Methods ...........................
50
1.7.2.5
Manual Bath Control ...............................
50
1.7.2.6
Automated Control Techniques ....................
50
1.7.2.7
Metering Pumps ....................................
50
1.7.2.8
Theory of Automated Control ......................
51
1.7.2.9
Conductivity Control ...............................
51

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin