April 2022 ~ MECHTECH GURU

Sand casting: Cope and Drag, Mold Cavity, Pattern, Pouring Cup, Sprue, Runner, Gate, Risers, Vents, Cores and Important considerations for casting

Sand casting: Cope and Drag, Mold Cavity, Pattern, Pouring Cup, Sprue, Runner, Gate, Risers, Vents, Cores and Important considerations for c...

MINIMUM FACILITIES & MACHINERIES REQUIRED FOR MANUFACTURE OF CMS CROSSING

Casting methods

Casting methods Metal casting process begins by creating a mold, which is the ‘reverse’ shape of the part we need. The mold is made from a r...

Summarizes different types of castings, their advantages, disadvantages and examples

Shell-mold casting

Shell-mold casting Shell-mold casting yields better surface quality and tolerances. The process is described as follows: - The 2-piece patte...

Expendable-pattern casting (lost foam process)

Expendable-pattern casting (lost foam process) The pattern used in this process is made from polystyrene (this is the light, white packaging...

Shrinkage Allowance

Shrinkage Allowance As the casting cools, the metal shrinks. For common cast metals, a 1% shrinkage allowance is designed in all linear dim...

Parting line

Parting line The parting line is the boundary where the cope, drag and the part meet. If the surface of the cope and drag are planar, then...

Drafts and tapers

Drafts and tapers allowance It is not good for a casting to have surfaces whose normal is perpendicular to the direction along which the par...

Casting design and quality

Casting design and quality Several factors affect the quality/performance of cast parts – therefore the design of parts that must be produce...

Die casting: Hot chamber process and cold chamber process

Die casting Die casting is a very commonly used type of permanent mold casting process. It is used for producing many components of home ap...

Permanent mold casting

Permanent mold casting Here, the two halves of the mold are made of metal, usually cast iron, steel, or refractory alloys. The cavity, inclu...

Investment casting (lost wax process)

Investment casting (lost wax process) This is an old process, and has been used since ancient times to make jewellery – therefore it is of g...

Ceramic mold casting

Ceramic mold casting Similar to plaster-mold casting, except that ceramic material is used (e.g. silica or powdered Zircon ZrSiO4). Ceramics...

Plaster-mold casting

Plaster-mold casting The mold is made by mixing plaster of paris (CaSO4) with talc and silica flour; this is a fine white powder, which, whe...

Industrial Automation: What is Automation?, History of Automation, Manual Control, Pneumatic Control, Hard wired logic control, Electronic Control using Logic Gates, Programmable Logic Controllers, Advantages of PLCs, Industrial Automation Components, Sensors ( Field Instruments ), Widely used Sensors ( Field Instruments ) and Leading Manufacturers in Sensors ( Field Instruments )

Industrial Automation •Automation is encompassing virtually every walk of life. •Automation solutions are required right from agricultural ...

Types of Derailing Switch on PSC sleeper: 1 in 8.5 Perpendicular derailing switch ( RT- 6068/ 60 Kg, RT- 5836/ 52 Kg) and 1 in 8.5 Symmetrical split derailing switch ( RT- 8153/ 52 Kg, RT- 8077/ 60 Kg)

Types of Derailing Switch on PSC sleeper: 1 in 8.5 Perpendicular derailing switch ( RT- 6068/ 60 Kg, RT- 5836/ 52 Kg) and 1 in 8.5 Symmetri...

Sand casting: Cope and Drag, Mold Cavity, Pattern, Pouring Cup, Sprue, Runner, Gate, Risers, Vents, Cores and Important considerations for casting

MINIMUM FACILITIES & MACHINERIES REQUIRED FOR MANUFACTURE OF CMS CROSSING

Casting methods

Summarizes different types of castings, their advantages, disadvantages and examples

Shell-mold casting

Expendable-pattern casting (lost foam process)

Shrinkage Allowance

Parting line

Drafts and tapers

Casting design and quality

Die casting: Hot chamber process and cold chamber process

Permanent mold casting

Investment casting (lost wax process)

Ceramic mold casting

Plaster-mold casting

Types of Derailing Switch on PSC sleeper: 1 in 8.5 Perpendicular derailing switch ( RT- 6068/ 60 Kg, RT- 5836/ 52 Kg) and 1 in 8.5 Symmetrical split derailing switch ( RT- 8153/ 52 Kg, RT- 8077/ 60 Kg)

CI Bracket for 52 Kg Check Rail on PSC sleeper BG 60 Kg LEVEL CROSSING Drawing no. RT- 4917

Rail seat assembly for 52 Kg Check Rail arrangement on PSC sleeper BG 60 Kg LEVEL CROSSING Drawing no. RT- 4916

Rail seat assembly on concrete sleepers with elastic rail clips

Concrete sleepers for main line and special locations for 25 MT axel load

Concrete Sleepers for Special locations

Quantity of materials per set of PSC sleeper for TURNOUT

Design Details of concrete sleepers for 1 in 10 D- Xing

Design Details of Concrete Sleepers of 1 in 8.5 Scissor Cross- over ( Track Centres 4725 mm)

Design Details of Concrete Sleepers for 1 in 8.5 Diamond Crossing

Design Details of Turnout Concrete Sleeper: 1 in 12, 1in 8.5, 1 in 16 and 1 in 20

DO’s AND DON’Ts FOR RAIL SEAT ASSEMBLY ON CONCRETE SLEEPERS WITH ELASTIC RAIL CLIPS

Cost of 6400 OR Curved Switch 1 IN 8.5, RT 4966 / RT 4866

WEIGHT CALCULATION FOR JOGGLED FP 52KG TO DRG NO. RT-5848 AND WEIGHT CALCULATION FOR JOGGLED FP 60KG TO DRG NO. RT-5849

Distinguish between different types of ELASTIC RAIL CLIP: MARK-II, MARK-III AND MARK- V

ELASTIC RAIL CLIP MARK- V WITH FLAT TOE FOR 60 Kg UIC/ 52 Kg RAIL SECTION DRG. NO.- RDSO/T- 5919

ELASTIC RAIL CLIP ERC- J ( HIGHER TOE LOAD) FOR FISH PLATED JOINT/ INSULATED GLUED JOINT RDSO/T- 8258- DRAWING

ELASTIC RAIL CLIP (ERC) MARK-II WITH FLAT TOE RDSO/T- 3722- DRAWING

ELASTIC RAIL CLIP (ERC) MARK-III WITH FLAT TOE RDSO/T- 3701

Properties of Elastic Rail Clips

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