| The bracket shown below must have precise dimensions and
carry heavy loads. The alternative material-cast steel-would be more expensive because of
alloying, machining, and heat treatment costs. Ductile Iron is also superior in its
dimensional accuracy. The casting is used in the as cast condition.
|
Courtesy: Ferrovorm, Republic of South Africa
Mounting bracket on a mold board plow produced by Fedmech Holdings Limited. The reason for switching to a grade 72,500 p.s.i. (500 mPa) Ductile Iron casting was the many field failures of the heavily welded steel part. Repeated attempts to improve the fabricated design resulted in too many components which led to warping and dimensional accuracy problems during welding. There was also a high reject level during fabrication of the part. Since switching to a Ductile Iron casting there have been no field failures. |
