How to prolong the service life of cold wire drawing

Cold wire drawing with the same qualities, and many other iron objects, such as common a kitchen knife in the air will rust, later will also touched water rust, long time not to use a kitchen knife will become a pair of rust corrosion, cold wire drawing, too, if you accidentally touch the water, it will produce rust, rusty iron wire is known to all, if you only have a little rust then it won't keep using, if rust is badly is very serious, so its quality problems, in the process of use will appear a lot of problems. So cold wire drawing need good maintenance and maintenance.