US 11,679,391 B2
Hammermill system, hammer and method
Robert F. Miller, Birmingham, AL (US)
Assigned to POSTLE INDUSTRIES, INC., Cleveland, OH (US)
Filed by Postle Industries, Inc., Cleveland, OH (US)
Filed on Mar. 13, 2019, as Appl. No. 16/351,691.
Application 16/351,691 is a division of application No. 14/525,739, filed on Oct. 28, 2014, granted, now 11,045,813.
Claims priority of provisional application 61/896,657, filed on Oct. 28, 2013.
Prior Publication US 2019/0210032 A1, Jul. 11, 2019
Int. Cl. B02C 13/28 (2006.01); B02C 13/04 (2006.01); B22D 19/06 (2006.01)
CPC B02C 13/28 (2013.01) [B02C 13/04 (2013.01); B22D 19/06 (2013.01); B02C 2013/2808 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of making a hammermill hammer system, the method comprising:
forming a body portion comprising a plurality of voids, said body portion formed of a first material;
placing a second material into the voids of the body portion, said second material includes one or more metals selected from the group consisting of manganese, chromium, molybdenum, titanium, vanadium, niobium, and boron;
solidifying the second material in the voids to form an insert in each of the voids thereby producing a hammer; and
wherein the first material is different from the second material, and
wherein the second material has a greater abrasion resistance than the first material, and
wherein the first material has a greater impact resistance than the second material, and
wherein at least a portion of said body portion is formed by a casting process, and
wherein said body portion surrounds each of the inserts in at least two dimensions, and at least one of the inserts extends from inside the hammer to an end surface along a wearing surface of the hammer, wherein said body portion fully surrounds a plurality of metal inserts except for a bottom end portion of said metal inserts.