Introduction to Basic Manufacturing Processes and ... - always yours

Hand hammers
Forging 271
There are two major kinds of hammers are used in hand forging: (1) the hand hammer
used by the smith himself and (2) the sledge hammer used by the striker. Hand hammers
(Fig. 14.8) may further be classified as (a) ball peen hammer, (b) straight peen hammer, and
(c) cross peen hammer. Sledge hammers (Fig. 14.8) may further be classified as (a) Double
face hammer, (b) straight peen hammer, and (c) cross peen hammer. Hammer heads are made
of cast steel and, their ends are hardened and tempered. The striking face is made slightly
convex. The weight of a hand hammer varies from about 0.5 to 2 kg where as the weight of
a sledge hammer varies from 4 to 10 kg.
Cross peen hammer
Straight peen hammer
Ball peen hammer
Eye
Straight peen
Cross peen
Face
(a) Double face
(b) Straight peen
(c) Cross peen
Fig. 14.8 Types of hammers
Set hammer
A set hammer generally used in forging shop is
shown in Fig. 14.9. It is used for finishing corners in
shouldered work where the flatter would be
inconvenient. It is also used for drawing out the gorging
job.
Eye
Face
Handle
Fig. 14.9 Set hammer