PROCESS STOPS RUSTING

Sun (Auckland), Volume III, Issue 864, 7 January 1930, Page 6

PROCESS STOPS RUSTING

FOG AND SALT SPRAY The effect of rust on the mudguards and other metal parts of motor-cars, especially in the district where the salt air from the ocean causes an unusual deteriorating effect on these' parts, has been overcome on De Soto cars. “The De Soto Six has been added to the Chrysler Motors line of cars using a rust-proofing process which eliminates to a great degree this chance for rust. “Tests reveal that fenders and other metal parts that have been treated with this rust-proofing process show nearly seven times as much resistance against rust as those treated only in the usual manner. During these tests-, the parts were subjected to a severe salt spray. Salt is one of the worst known enemies of steel that has been painted or enamelled, and in order to determine the value of the rust-proofing process, samples of fenders were subjected to a spray of salt water for hundreds of horn's. It was found that those pieces of metal that had not received the rust-proofing process began to deteriorate after about 72 hours, while the other metals that had been treated, stood up well for 500 hours and more. “It requires about 45 minutes to rust-proof a fender or any other metal part of a De Soto Six. During the process the metal part passes through nine different stages.”