vladimirsinisi escribió:Seguramente ya se venia usando en otras cosas y solo siguieron usandolo pero xq cambiaron de cobre a zink y a chapa? Falta de materia prima, costos?
Encontre algo interesante,Willys empezo con el modelo MA a utilizar datas de zinc,mientras que el Bantam BRT y el Ford GP utilizaron el laton (Brass)la tecnica se llama etching que es un porceso de transferencia utilizando acido,creo que fosforico al 35%.
Por otro lado el zinc,en ese momento tenia un precio bajo,y el brass se utilizaba como insumo de municiones.Para mi que el zinc ademas de ser ideal para el etching,es opaco,con lo cual reune todas las condiciones en un vehiculo de guerra.Les paso el link y las frases mas importantes.
http://rdrnl.home.xs4all.nl/4UResearch.htmlThe metals used are chosen to be as close as possible to the original dataplates. By example the Willys dataplates, after mid 1942 Willys started to use zinc instead of brass. The metal brass was destineted to have a more important part in WWII history (ammunition). After the use of brass Wilys started to use zinc, which was a less expensive metal. A remarkable detail is that the Willys used zinc dataplates for their preproduction series Willys MA. The other preproductions Jeeps, the Bantam BRT and Ford GP, did use brass.
Many reproduction dataplates are made of aluminum instead of the correct metal, zinc. Also the technique used are often not correct. Repeatedly reproduction companies use a letter-presse or silk-screen print technique. Both are not correct, because the procede used was the etching technique. This technique gives that special apperience which is so recognizable for a original dataplate.