Search results

The hot dip galvanising process is a well‐established means of rust‐proofing iron and steel. In Western Europe 78,000 tons of zinc are used every year for galvanising sheet and strip. In the U.S.A., where galvanised sheet is widely used, the figure is 132,000 tons p.a. Galvanisers on both sides of the Atlantic can learn much from each other and last month about 200 experts from Britain, the Continent and America met at Oxford for an International Conference on Hot Dip Galvanising under the auspices of the Zinc Development Association. The subjects discussed ranged from the galvanising of wire to an incentive wages scheme for galvanising workers. Here are summaries of some outstanding papers.

Corrosion is one of the chief factors contributing to the wear of the cylinders and piston rings of an automotive engine. It is caused by acids formed in the combustion process, particularly those resulting from the combination of certain gases with water condensed on the cylinder walls in low‐temperature operation. In this article the author discusses the mechanism of corrosive cylinder wear, together with the factors influencing it, and reviews some of the methods of mitigating the attack.

Mixtures of metallic phosphates which are produced as by‐products of the phosphate industry have been found to have superior corrosion‐inhibiting properties in water systems while at the same time preventing scale deposition in those sections where the water has a tendency to form scales. Thus, chemical control of acidity in water systems becomes much less critical. The new technique is considered important and it is thought that metallic phosphates may in the future be applied to fields other than water treatment. The following article is based on the results of work carried out in the laboratories of the Deady Chemical Co., Kansas City, U.S.A.