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Schloetter Plating Heaters

Schloetter Plating Heaters

 

Chemical Resistance

Resistance Evaluation of Immersion Tube Materials

+ =  Resistant
0 =  limited resistance (see Legend point 1)
- =  Not Resistant
Blank =  Not Assessed

Code Letters of Immersion Tube Materials

PS = Special hard-glazed porcelain
SS = Stainless steel (material no. 14571)
MS = Mild steel St 34-2
Ti = Titanium (material no. 3.7035)
PTFE = Polytetrafluoroethylene (PTFE) compound

Legend

  1. The resistance depends on various parameters, such as the concentration, the temperature and the processing method.
  2. The specific surface load may not exceed 1.5 Watts/cm² in order to avoid adverse effects on the immersion tube material.
  3. It is recommended that the heater is used with an RCD for safety reasons.
  4. The solution tends to form encrustations on hot surfaces. These deposits hinder the transfer of heat from the immersion tube to the liquid and would result in failure of the immersion heater over time. For this reason, the specific surface load of the immersion tube may not exceed 2 Watts/cm².
  5. Our PTFE rod heaters are particularly suitable for heating these electrolytes.
Process Solution Immersion Tube Material
  PS SS MS Ti PTFE
Pre Treatment
Potassium & Sodium Hydroxide (KOH & NaOH)      (1)
- 0 0 0 +
Inorganic Acids
Hydrofluoric Acid (HF)
- - - - +
Aqua Regia, all acids chemically pure (3HCl + HNO3) + - -   +
Mixed Acid, all acids chemically pure (HNO3/H2SO4/H2O) + - - - +
Phosphoric Acid, chemically pure (H3PO4)              (1) 0 0 - 0 +
Nitric Acid, chemically pure   (H3NO3) + 0 - + +
Hydrochloric Acid, chemically pure (HCl) + - - - +
Sulphuric Acid, chemically pure (H2SO4) + - - - +
Organic Acids
Formic Acid (HCOOH)
+ - - - +/0
Benzoic Acid (C6H5COOH) + + - + +
Acetic Acid (CH3COOH) + + - + +
Lactic Acid (CH3CHO.COOH) + - - + +
Oxalic Acid (C2O4H2.2H2O) + - - - +
Tartaric Acid (C4H6O6) + 0 - + +
Citric Acid (C3H4OH(COOH)3.H2O) + + - 0 +
Dipping
Dipping & pickling, all acids chemically pure (H2SO4/HCl/HNO3)
+ - -   +
Electrolytes
Lead Bath (Fluoborate)
- - - - +
Cadmium bath, cyanide 0 + (3) - + (3) +
Chromium bath (mixed acid)                      (5) 0 - - - +
Iron Bath (FeCl2.4H2O) + - - + (3) +
Iron Bath (FeSO4 or FeBF4) 0 - - - +
Gold bath, cyanide 0 + (3) - + (3) +
Gold bath, acid + - - - +
Copper bath, cyanide 0 + (3) - + (3) +
Copper batch, acid + - -   +
Brass bath, cyanide 0 + (3) - + (3) +
Nickel bath (Nickel chloride / Nickel sulphate) + - - 0 (3) +
Platinum bath, acid + - - - +
Rhodium bath (H2SO4) + - - - +
Silver bath, cyanide 0 + (3) - + (3) +
Zinc bath, alkaline cyanide 0 + (3) - + (3) +
Zinc bath, acid + - - - +
Tin bath, alkaline - + (3) - 0 (3) +
Tin bath, fluoborate - - - - +
Tin bath (H2SO4) + - - - +
Electrolyte, autocatalytic
Copper bath (electroless), alkaline       (4)  (5)
Suitability depends on the type of bath solution.
Further information available upon request.
Nickel bath (electroless), alkaline        (4)  (5) Suitability depends on the type of bath solution.
Further information available upon request.
Nickel bath (electroless), acidic           (4)  (5) +   -    
Other treatment solutions
Pickle bath (HCl and/or H2SO4 free of fluoride)
+ - -   +
Potassium permanganate, dilute solution (KMnO4)  (1) (4) + +   + +
Blackening bath (HNO3 + FeCl3) + - - 0 +

Heater Sizing Chart

°C °F Heater Size (KW)
100 212 1.4 2.7 4.0 5.4 6.7 8.0 9.4 10.7 13.4 16.1 18.7 21.4 24.1 26.8 29.5 32.2 34.8 37.5 40.2 42.8 45.5 48.2 50.9 53.6
94 200 1.3 2.5 3.7 4.9 6.2 7.4 8.6 10.0 12.3 14.8 17.3 19.7 22.2 24.7 27.1 29.6 32.0 34.5 37.0 39.4 41.9 44.4 46.8 49.3
88 190 1.2 2.3 3.4 4.6 5.7 6.9 8.0 9.2 11.4 13.7 16.0 18.3 20.6 22.9 25.2 32.2 29.7 32.0 34.3 36.6 38.9 41.2 43.5 45.7
82 180 1.1 2.1 3.2 4.2 5.3 6.3 7.4 8.5 10.6 12.7 14.8 16.9 19.0 21.1 23.2 25.3 27.4 29.6 31.7 33.8 35.9 38.0 40.1 42.2
77 170 1.0 1.9 2.9 3.9 4.8 5.8 6.8 7.7 9.7 11.6 13.5 15.5 17.4 19.3 21.3 23.2 25.1 27.1 30.0 31.0 32.9 34.8 36.7 38.7
71 160 0.9 1.7 2.6 3.5 4.4 5.3 6.1 7.0 8.8 10.5 12.3 14.0 15.8 17.6 19.3 21.0 22.8 24.6 26.3 28.0 29.9 31.6 33.4 35.1
65 150 0.8 1.6 2.4 3.2 4.0 4.7 5.5 6.3 8.0 9.5 11.0 12.6 14.2 15.8 17.4 18.9 20.5 22.1 23.7 25.2 26.8 28.4 30.0 31.6
60 140 0.7 1.4 2.1 2.8 3.5 4.2 4.9 5.6 7.0 8.4 9.8 11.2 12.6 14.0 15.4 16.8 18.2 19.6 21.0 22.4 23.8 25.2 26.6 28.0
55 130 0.6 1.2 1.8 2.5 3.0 3.7 4.3 4.9 6.1 7.4 8.6 9.8 11.0 12.2 13.5 14.7 15.9 17.1 18.4 19.6 20.8 22.0 23.2 24.5
49 120 0.5 1.0 1.6 2.1 2.6 3.2 3.7 4.2 5.2 6.3 7.3 8.4 9.4 10.5 11.5 12.6 13.6 14.7 15.7 16.7 17.8 18.8 20.0 21.0
43 110 0.5 0.9 1.3 1.7 2.2 2.6 3.0 3.5 4.4 5.2 6.0 7.0 7.9 8.7 9.6 10.5 11.3 12.2 13.0 13.9 14.8 15.7 16.5 17.4
38 100 0.4 0.7 1.0 1.4 1.7 2.1 2.4 2.8 3.5 4.2 4.9 5.5 6.2 6.9 7.6 8.3 9.0 9.7 10.4 11.0 11.8 12.5 13.2 13.8
32 90 0.3 0.5 0.8 1.0 1.3 1.6 1.8 2.0 2.6 3.0 3.6 4.2 4.6 5.2 5.7 6.2 6.7 7.2 7.7 8.3 8.7 9.3 9.8 10.3
27 80 0.2 0.4 0.5 0.7 0.9 1.0 1.2 1.4 1.7 2.0 2.4 2.7 3.0 3.4 3.7 4.0 4.4 4.7 5.0 5.4 5.7 6.0 6.4 6.7
21 70 0.1 0.2 0.25 0.3 0.4 0.5 0.6 0.7 0.8 1.0 1.1 1.3 1.5 1.6 1.8 1.9 2.1 2.3 2.4 2.6 2.7 2.9 3.0 3.2
Imp Gallons 11 22 33 44 55 66 77 88 110 132 154 176 198 220 242 264 286 308 330 352 374 396 418 440
Litres 50 100 150 200 250 300 350 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

N.B. This chart indicates the kilowatt requirement for heating water (S.G. 1.0) from ambient temperature of 16 °C (61°F) in a 4 hour period.
(Figures shown include 10% added to allow for heat losses).

Specification subject to change without prior notice

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Schloetter Co Ltd

Abbey Works
New Road
Pershore
Worcs, UK
WR10 1BY

Tel:      +44(0)1386 552331

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E-mail:  info@schloetter.co.uk

Registered in England 947371

VAT No. GB 274 7177 31

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