Report on The Pickling of Steel Castings
Abstract
The literature on pickling is reviewed and standard pickling practices and the use of inhibitors outlines. The behavior of cast steel in pickling is similar to rolled steel. The steel must be tested in the pickling solution in order to obtain true results. Pickling is responsible for a considerable loss in ductility of the steel. Sorbed atomic hydrogen is responsible for the embrittling effect. The magnitude of the internal stress in the steel or casting is important and determine the degrees of embrittlement. The surface cracking of casting can result from pickling. Castings that do not crack during pickling will regain their ductility in air. The embrittlement is studies by tension, impact and internal friction testing. Because of the high internal stresses in steel castings it is recommended that pickling be discontinued and that sand blasting be substituted as a method of cleaning castings.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 17, 1934
- Accession Number
- AD1145280
Entities
People
- C. W. Briggs
Organizations
- United States Naval Research Laboratory