This document discusses forging technology and provides details on various types of forging processes like hot forging, cold forging, and examples of each. It also lists common forging tools and equipment used like hammers, anvils, furnaces. Forging has advantages like no weight loss, smooth surfaces, and improved mechanical properties, but also has disadvantages such as high tooling costs and maintenance. Common defects in forging include pitted surfaces, buckling, and microcracking.
3. TYPES OF FORGING
HOT FORGING
Following are some of the examples of hot forging
1.HAMMER OR SMITH FORGING
2.DROP OR DIE FORGING
3.PRESS FORGING
4.UPSET FORGING
5.ROLL FORGING
6.SWAGGING HOT FORGING
4. Cold Forging
Cold Forging is a cold working process
where the material is squeezed into a die
and the finished parts assume the shape
of the die. This process is also known as
Cold Heading.
5. Applications of forging
• The portion of work in which forging is done is
termed as forge and the work is mainly performed by
hammers, machines, and presses.
• Forging processes are among the most important
manufacturing techniques as it is used in small tools
,guns,weapons,automobile sector, as well as home
and other accessories.
6. FORGING TOOLS AND
EQUIPMENTS
• TONGS : USED FOR HOLDING WORK EHILE DOING A
FORGING WORK.
• HAMMER : USED FOR HAND FORGING.
• ANVIL : ACTS AS A SUPPORT FOR FORGING WORK.
• SWAGE BLOCK : USED FOR SIZING, SQARING AND
BENDING.
• FURNACE : USED FOR IN HOT FORGING FOR
HEATING THE METAL PIECE TO RED HOT.
7. ADVANTAGE DISADVANTAGES
OF FORGING
• Advantage Disadvantages
No weight loss. High tool cost.
Smooth surface. High tool maintenance.
High speed of Cost more than cast
production production.
Improved mech
property
8. TYPICAL
FORGING DEFECTS
•Pitted surface, due to oxide scales occurring at high
temperature stick on the dies.
•Buckling, in upsetting forging. Subject to high
compressive stress.
•Microcracking, due to residual stress.
