GOVT. ENGINEERING COLLEGE BHARATPUR RAJ.

Submitted toMr.Rahul ShrivastavHead of mechanical department

HMT Machine tools LTD. Ajmer unit

Submitted fromPukhraj maliRoll no.:-12EELME035ME final year

Summer training presentation on

HMT Machine Tools Ltd., Ajmer

A Centre of Excellence for Grinding Solutions

Welcome

HMT MACHINE TOOLS LIMITED

MACHINE TOOLS DIVISIONAJMER Inception 1967

About HMT

• Established in 1953.

• is a multi-product, multi-technology, engineering complex with strengths of-

-16 Manufacturing units(22 Product Division) -Asserts worth over US $ 250 million -annual turnover of US $ 300 million -the Widest range of machine tools, ranging from products lathes to CNC turning/ machining centres.

• Source of qualified and experienced manpower

• Over the years diversified into Watches, Tractors, Printing Machinery, Metal Forming Presses, Die Casting & Plastic Processing Machinery, CNC Systems & Bearings

Units of Hmt in india

•Major product of Hmt ajmer is— 1.Grinding Machines :-

(cylinderical, centreless,internal,crankshaft,double disc, Horizantal & vertical tools

&cutter etc.) 2. Wide range of CNC

conventional machine:- (CNC turning centre

PUSHKAR, CNC Training Lathes)

Machine ToolsDepartments

MMS Pattern & melting &

CastingHDMS

AssemblyK130 &GCL

Tools room & Round

Foundary shop

1. Casting • In this process, a liquid material is usually poured into a mould,

which contains a hollow cavity of the desired shape, and then allowed to solidify.

The solidified part is known is as a CASTING. Which is ejected or broken out of the mold to complete the process.

2. FURNACE •Furnace is used for melting the metal . •HMT has 3 furnaces, two of 3MT capacity and one of 1.5MT

capacity •All furnaces are induction type & temperature in the furnaces

reaches up to 1400-1450˚C

3.MOULDING SAND•Moulding sand is defined as the granules particles Resulting from the breakdown of rocks.•moulding sand is also known is foundary sand.

•Main constituents of moulding sand- 1. Silica sand :- Silica 86-90% Alumina 4-8% Iron oxide 2-5%And other smaller oxide Ti, Mn and Ca 2. Green Sand :- Bentonite Clay 50-60% pulverized coal 30-40% Water As require

4.SAND MOULD

•Sand mould is a preformed sand container into which molten metal poured and allowed to solidify.

•After casting it is removed from sand mould about after 24 hours. sand mould generally destroyed.

•Manufacturing1. MMS (MEDIUM MACHINE SHOP)There are following main machine in this shop:-

2. Milling Machine (H & V)

3. Lathe Machine (Centre & Turret)

4. Boring (H & V)

5. Radial Drilling

6. Surface Grinding

ROUNDS SHOP

There are main machine in this shop:-

1. Cylindrical grinding 2. Internal Grinding 3. Centre Lathe 4. Slot Cutting 5. Circular Dividing

CLASSIFICATION OF MACHINING PROCESS

1. Drilling 2. Boring 3. Milling 4. Planing 5. Shaping 6. Slotting 7. Grinding 8. Knurling 9. Turning10. Threading 11. tapering12 Chamfering

slotting threading

Boring Grinding

. Knurling . tapering

drilling

Heat Treatment Section

• Heat treatment is expensive and long process. •In the heat treatment three point are important for this process:- 1. Time 2. Temprature 3. Material code ( which mattle use) -:Operation:- 1. Carburising:- material code - C2R,C2A,C2M Box Carburising - 850°C (8 hour ) Liquid Carburising - 1751C (4- 5 hours )

2.Harding:- material code - T1,T2,T5,T8,C45,C1 etc. Tempreature - 840-860°C ( 12- 14 hours )

3.ASSEMBLY

• K130 :- This is a cylindrical grinding machine. Here alphabet K represent the scientist “Keuring” And Numerical value indicates the maximum diameter of work-piece from ground.

Any Question ??

Thank you

HMT Machine Tools LimitedAJMER