RAPID DETERMINATION OF SMALL AMOUNTS OF CARBON IN IRON AND STEEL (II)
Acidimetric Method
1955 Volume 41 Issue 6 Pages 621-626
Details
1955 Volume 41 Issue 6 Pages 621-626
In order to determine rapidly the small amounts(under O.05%) of the carbon in iron and steel without usjng any complicated apparatus, the authors studied the titration method.
(1) For the purpose of increasing the absorption efficiency of the carbon dioxide, the helical-type absorption tube(1ength about 1.6m, inside diameter of tube 4mm, diameter of turn 8cm, number cf turn 6) was used instead of the ordinary vertical type.
(2) The results of comparison of the absorption solutions(N/100 KOH, N/100 NaOH, N/100 Ba(OH)2) indicated that potassium hydroxide and sodium hydroxide solutions were most suitable.
(3) The best rate of the oxyge flow at the carbon dioxide detection bulb was 40ml per minute.
(4) By the above method, 0.01 to 0.05% carbbn in iron and steel could be determined with the accuracy of ±0.001% within 17 to 23 minutes.
(5) The authers'method was recommendable for the control analysis in the plant.
