TODAY’S PATENT – IRON BASED POWDER MIXTURES
This invention “Iron-based powder mixtures” was invented by Frederick J Semel and granted a patent on 3rd April 2000 by the Denmark patent office bearing patent grant number DK173216B1 to the patentee.
The present invention relates to homogeneous iron-based powder mixtures of the kind containing the iron or steel powders and at least one alloying powder. More particularly, the invention relates to such mixtures which contain an improved binder component and are therefore resistant to segregation or a dusting of the alloy powder.
The use of powder metallurgy techniques in the manufacture of a myriad of metal parts is well known. In such processes, iron or steel powders are often mixed with at least one other alloying element also present in particulate form, followed by compression and sintering. The presence of the alloying element permits the attainment of strength and other mechanical properties of the sintered workpiece which cannot be achieved with non-alloyed iron or steel powders alone.