summry of industrial scenario

8/11/2019 Summry of industrial scenario

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INDUSTRY PROFILE

Established in 1982, Toyo Springs was setup nearDelhi in Rai, Sonepat, Haryana (India) underentrepreneurship of Mr.P.K.Sharma. Over the lasttwo decades, Toyo Springs has fast emerged on

the horizon of Multileaf and Parabolic Springs asa leading manufacturer. Toyo's successfulendeavors truly reflects on its clientele with OEMlike TATA MOTORS, MAHINDRA, MARUTI SUZUKI,

SWARAJ MAZDA, VOLVO, SCOOTERS INDIA,ASHOK LEYLAND and exports to USA,EUROPE,AUSTRALIA.


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PRODUCTS

Leaf spring

Parabolic spring

Multi leaf spring


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MANUFACTURING SYSTEM

TOYO Springs has a highly qualified team of

professionals especially trained by technical

partner DAEWON CORP of South Korea.

TOYOs design department uses 2D & 3D CAD

programs such as AutoCAD, CATIA, PRO-E and

stress analysis is done by ANSYS.


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CAPABILITIES OF TOYO

To design & develop conventional & parabolic

leaf springs as per customer's requirement.

To do value engineering of existing springs

resulting in weight reduction & reduced cost.

To conduct FEA analysis, endurance test, load

test, metallography, chemical analysis and salt

spray test.


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DESIGN SOFTWARE

AUTOCAD

PRO-E

CATIA Leaf Spring Design Software L028


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RAW MATERIALS

Chrome manganese steel; sup 9, sup

9achrome vanadium steel; 50crv4

Chromium boron steel; sup 11a.

Chrome molybdenum vanadium steel;

51crmov


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HEAT TREATMENT

Heat treatment is a process which is used to

change the physical and chemical Properties

of a material.

Heat treatment involves heating at very high

temperatures so that hardening or softening

of material is obtained.

Heat treatment is an important operation in

imparting high mechanical properties.


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Annealing

Annealing is a process in which first heating of

metal is done and then cooling is done at

slower rate so that refined microstructures are

formed.

Here heating is done to a point where

recrystalization takes place.


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PURPOSE OF ANNEALING

To reduce hardness.

To relieve internal stresses.

To improve machinability

To increase or to restore ductility

To refine grain size

To reduce or eliminate structural inhomogeneity

To prepare steel for subsequent heat treatment


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Hardening

Hardening is a process in which steel is heated

to austenite temperature and then quenching

is done in water oil or molten salt baths.

In the manufacturing of leaf springs hardening

is done by heating material from 850 to 950 C


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QUENCHING

Quenching is a process in which cooling of

material is done at rapid rate. This process is

done so that martensite transformation of

material is obtained.

Quenching is done by heating it from 350 to

500 C and after that it is cooled rapidly in oil

and when cooling is done then its hardness isincreased.


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TEMPERING

Tempering is a process in which heating is

done to increase the toughness of material

and this is done after hardening so that some

extra hardness that occurs in a material can be

reduced


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ADVANTAGES

Residual stresses are relieved

Ductility is improved

Toughness is increased Higher the tempering temperature more will

be the residual stresses due to which hardness

is reduced and toughness is increased.


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PRIMER PAINTING


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ASSEMBLING OF LEAF SPRING


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FINAL PRODUCTION


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REFRENCES

Heat and mass transfer by P. K. Nag.

Strength of materials by R. K. Rajput.

www.toyosprings.com. Machine design by R. S Khurmi.


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THANK YOU

summry of industrial scenario

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