India yamaha motors
1. 1. SUMMER TRAINING PRESENTATION BY – ************** B.TECH
(MECHANICAL) 4TH YEAR 110106250 11SETME517
2. 2. INDIA YAMAHA MOTORS PVT. LTD. • Yamaha was established
in 1887 as a piano and reed organ manufacturer by Torakusu
Yamaha. • Yamaha Motor Company Limited is a Japanese
manufacturer of motorcycles, marine products such as boats and
outboard motors, and other motorized products. • The company was
established in 1955 upon separation from Yamaha Corporation, and
is headquartered in Iwata, Shizuoka, Japan.
3. 3. WELDING • Welding is fabrication or sculptural process that joins
materials,usually metals or thermoplastics, by causing coalescence. •
This is often done by melting the work pieces and adding a filler
material to form a pool of molten material that cools to become a
strong joint, with pressure sometimes used in conjunction with heat,
or by itself, to produce the weld. • This is in contrast with soldering
and brazing, which involve melting a lower-melting-point material
between the work pieces to form a bond between them, without
melting the work pieces.
4. 4. SAFETY DIRECTIONS FOR WELDING : • GLASSES – For
Protecting Eyes. • MASK – For Protecting Lungs from harmful gases.
• APPRON – For Protecting Body. • ARM SLEEVES – For Protecting
Forearms. • GLUBS – For Protecting hands. • LEG GUARD - For
Protecting legs.
5. 5. The types of welding observed in the weld shop are:- • TIG welding
• Resistance spot welding • Seam welding • MIG welding
6. 6. TUNGSTEN INERT GAS WELDING (TIG) • It is an inert gas
shielded arc welding process using non-consumable electrode. •
Thoriated tungsten is used as electrode. • It carries high currents and
can maintain a stable arc with ease.
7. 7. This welding is used in the manufacturing of the exhaust pipes of
the bikes. The exhaust pipes are essentially formed with the help of
two pipes. The inner and outer pipes are welded together with the
help of TIG welding.
8. 8. RESISTANCE SPOT WELDING • This is done to join two sheet
metal jobs in lap joint forming a small nugget at the interference of the
two plates. • The spot welding machine consists of two electrodes,
out of which one is fixed. The other is fixed to a rocker arm for
transmission of mechanical force from a pneumatic cylinder. • Current
density should be proper to obtain satisfactory weld. It depends upon
the contact area between the electrode and the work piece.
9. 9. RESISTANCE SPOT WELDING
10. 10. SEAM WELDING • It a method of making a continuous joint
between two overlapping pieces of sheet metal. Work is placed
between the wheels, which serve as conductors for producing
continuous welds. • As pressure is applied, the drive is started and
welding current switched on. At the same time, over-lapping surfaces
of the metal are forced together as fast as they are heated. A coolant
is applied to conserve the electrodes and cool the work rapidly to
speed the operation.
11. 11. • Seam welding is used to weld the panels together in the
manufacturing of fuel tank. • SEAM WELDING Machine which is
basically used in industries.
12. 12. MIG WELDING (METAL INERT GAS WELDING) • Gas
metal arc welding (GMAW), sometimes referred to by its subtypes
metal inert gas (MIG) welding or metal active gas (MAG)welding, is a
welding process in which an electric arc forms between a
consumable wire electrode and the work piece metal(s), which heats
the work piece metal(s), causing them to melt, and join. Along with
the wire electrode, a shielding gas feeds through the welding gun,
which shields the process from contaminants in the air.
13. 13. • The process can be semi-automatic or automatic. A
constant voltage, direct current power source is most commonly used
with GMAW, but constant current systems, as well as alternating
current, can be used. • There are four primary methods of metal
transfer in GMAW, called globular, short-circuiting, spray, and pulsed-
spray, each of which has distinct properties and corresponding
advantages and limitations. • Originally developed for welding
aluminum and other non-ferrous materials in the 1940s, GMAW was
soon applied to steels because it provided faster welding time
compared to other welding processes. The cost of inert gas limited its
use in steels until several years later, when the use of semi-inert
gases such as carbon dioxide became common. Further
developments during the 1950s and 1960s gave the process more
versatility and as a result, it became a highly used industrial process.
• Today, GMAW is the most common industrial welding process,
preferred for its versatility, speed and the relative ease of adapting
the process to robotic automation. Unlike welding processes that do
not employ a shielding gas, such as shielded metal arc welding, it is
rarely used outdoors or in other areas of air volatility. A related
process, flux cored arc welding, often does not use a shielding gas,
but instead employs an electrode wire that is hollow and filled with
flux.
14. 14. MATERIAL USED FOR MIG WELDING: •Mild and Alloy
•Quench and tempered steels •Ferritic materials •Stainless steel
•Aluminum
15. 15. Welding Defects • BLOW HOLE • POROSITY • WELD
SPATTER • UNDER CUT • NO – LAP • NON UNIFORM WELDING.
