Diffusion aluminizing of steel, cast iron, copper, and titanium

Conclusion

Investigations of diffusion aluminizing of steels and cast irons by the liquid, powder, and vaporizing methods have made it possible to determine the structure of the coatings and establish the parameters to vary the properties of these coatings. Three original methods of liquid aluminizing were used. Continuous mass production of aluminized wire and aluminizing of finished and semifinished products has been established on the basis of these methods.

Investigations of diffusion aluminizing of copper and titanium have shown their high heat resistance. We have established the basic parameters of chemicothermal treatment providing the required properties and duplication of the results. In my opinion liquid aluminizing of ferrous metals will have far-reaching technical and economic effects.

The favorable results of these investigations have led to the beginning of commercial diffusion aluminizing of iron alloys (vapor or, especially, liquid aluminizing); diffusion aluminizing of parts and semifinished products is also under intensive development in Poland. It is planned to raise the production of aluminized wire to 15,000 and then 30,000 tons a year, to begin production of aluminized pipe of various diameters and lengths up to 10 m in quantities of 20, 000–30, 000 tons a year, to begin production of aluminized sheet, and to expand considerably the use of aluminized parts and semifinished products.