Wednesday, 19 December 2018

job notification

job notification

Monday, 17 December 2018

MECHANICAL ENGINEERING NOTES

Strength of Material


Strength Of Materials & Mechanics of Solids



Vibrations

Rao Mechanical Vibrations

Theory of Machine
Theory of Machine by S.S Ratan

Engineering Mechanics
Mechanics of Solids by S.S. Bhavikatti

Application
Internal Combustion Engines Fundamentals – Heywood

Thermodynamics
Thermodynamic R.K Rajput.zip.

Manufacturing Engineering

all mechanical books pdf

Engineering notes PDF Download now 


  • CIVIL ENGINEERING
  • ELECTRICAL ENGINEERING

Sunday, 19 August 2018

[pdf] mechanical engineering gate notes/ books free for Gate, ssc JE, other comparative exam free download

[pdf] mechanical engineering gate notes/ books free for Gate, ssc JE, other comparative exam free download. free download gate made easy and ecs hand written notes. by using this notes you can crack aby gov. exam. this notes na dalso book more helpful for BE , DIPLOMA, GATE, SSC JE, OR OTHER COMPATATIVE EXAM.




 Below link click here for download.

Strength of Material

Strength Of Materials & Mechanics of Solids

Strength of Materials and Structures-Malestrom

Strength of Materials- S.K Mondal





Vibrations


Theory of Machine



Engineering Mechanics



Application



Thermodynamics



Manufacturing Engineering



Industrial Engineering



Heat-Transfer



Material Science



Kalpakjian-Schmid

Fluid Mechanics



Machine Design





[pdf] mechanical engineering gate notes/ books free for Gate, ssc JE, other comparative exam free download

Saturday, 7 July 2018

murgi palan ki puri jankari type, process, important tips hindi me

MURGI PALAN KAISE KARNA CHAHIYA 

Murgi palan hi ku ?
murgi palan karne ke liya jada paisa nahi lagata hai. bahar desh me chicken yani mass or ande ki mang jada ha. es liya ya acha business ha future ke liya acha ha or ese kum paise lagte ha to ya village se bhi shuru kar sakte ha. agar apko es murgi palan ki puri jankari chahiya to niche pura pade ese apko faida bhi hoga or puri jankari milegi. so friend age pade.



Wednesday, 4 July 2018

career zone llp, pulachi wadi, deccan gymkhana, pune, Maharashtra- process and review



career zone llp consultancy, pune  process and review or this consultancy fraud  or not.
Hello, friend aj hum career zone llp consultancy  ke bare me bat karege jo pune me ha..ya  fraud ha ya  nhi ha eske bare me bath karege or eske review dekhege.or aj me apko eski puri process bata voga.   Es consultancy ke maximum review negative ha yani fraud ha Ase maximum logo ka kehana he. 


Ya consultancy ka address :- Office No 45 and 46, First Floor, Bhosale-Shinde Arcade, Jangli Maharaj Road, Deccan Gymkhana, Pune - 411004, Opposite Bank Of Maharashtra (Map) ya ha. Jo bhi es consultancy me jata ha. Use pehle line me bithate ha. Jab number ata ha tab under  office me chodate ha. Office ke under  ek khubsurat si madam baithi rehti ha. Vo madam puri detail batati ha. Jaise apko  vaha pe Rs. 500/- ka registration karna padega. Vaha se 2 tarike se vacancy bhari jati ha. 1) front door 2) back door

Friday, 22 June 2018

DBA--dynamic beneficial accord marketing pvt ltd--Fraud company

DBA Dynamic beneficial accord-- Marketing pvt. ltd.

Hello friends, aj mai apko DBA ke bareme batane ja raha hu. DBA froud company ha ki nahi ?  DBA ya company ka pura nam ha dynamic beneficial accord-Marketing pvt. ltd. ha. Ya ek fraud company nahi ha per indirectly fraud ha. inka jo bulane ka tarika ha vo bohot galat ha. Agar ap inke document dekhege to pure original or sahi ha. ya company Roshan singh bist ki ha. vo bolte ha ki vo fasion ke sath deal karte ha. or direct selling karte ha. es ke centre pure India me ha punjab, nashik, pune, chandrapur etc.



ya company fraud es liya lagti ha es company ke employ dusare  achi company ka nam leke or acha payment ka package milega, permanent job ha yasa batakar bulate ha. example jaise jinka diploma huva ha unko mahindra and mahindra ltd. ka nam lete ha.ya other company ka nam lete ha. yase zut bolkar bulate ha. 

Tuesday, 10 April 2018

quadcopter kaise banaye Five steps mechanicalgatenotes

How to made quadcopter? quadcopter yani use dron bhi kehte ha. Quadcopter kaise banate ha. Ya dron kaise banate ha aj hum dekhege. Jo chihe gharme ha usi se hum banayage. Point wise niche dekhege kaise banate ha.


quadcopter kaise banaye Five steps mechanicalgatenotes

Main component of qurdcopter. (dron banane ke liya lagne vale part)

Max box 8 (अधिकतम बॉक्स 8)
DVD motors 4 (डीवीडी मोटर्स 4)
Fan
Wire (तार)
Gum (गम)
Battery (बैटरी)
Power distributor (विद्युत वितरक)
Small switch (छोटा स्विच)

All this above part is important for making a quad copter.


(क्वाडकोपर बनाने के लिए यह सब ऊपर वाला हिस्सा महत्वपूर्ण है.)
quadcopter kaise banaye Five steps mechanicalgatenotes


Step 1
You joint all this 8 max box in + form. 2 box or other 2 box in + form.
You want you can use candy stick or plastic stick instead of max box but in light weight.
All this joint in + shape and central of this cross is equal distance from all corner of plus shape. ( हम सभी माचिस बॉक्स नहीं तो आइस क्रीम की स्टिक को प्लस की शेप में आत्ताच करेंगे। हम उसको प्लस की शेप में आत्ताच करेंगे और सभी कार्नर सेण्टर से सामान डिस्टेंस पैर रहने चाहिए।)

Step 2
Place all 4 motors all side of plus at a corner. You must use high RPM motors. For quadcopter easy lift upward by using more rotation of motors. This motors you can purchase from shop otherwise you can use motors from DVD and computer fan its more RPM in this motors. attach fan to motors.
These motors attach at the end of + shape by using gum. And attach wire for all this motors.( स्टेप में हम मोटर्स कार्नर पैर आत्ताच करेंगे। या मोटर्स आप दुकान से खरीद सख्ते है नहीं तो आप अपने घरके पुराने डीवीडी  या कॉम्पटर के फैन भी यूज़ केर सख्ते है. कुकी उस फैन का आरपीएम  बोहोत ज्यादा रहता है. आसानी से कम पावर में भी ज्यादा रोटेशन हमें मिलते है.)

Step 3
In this step you can use power distributor. Because main function of power distributor distributes all power equal amount and supply to motors. Motors can run same RPM.
This power distributor attaches middle of quad copter. And attach all motors cable to power distributor. But cable attach cross wise because we want motor run alternate to each other.
Like that one motors run clockwise so other motors run in counter clock wise or opposite to each other. For more balance and lift in upward direction. (पावर डिस्ट्रीब्यूटर इसका यूज़ हम पावर को डिस्ट्रीब्यूट  करने के लिया करते है. इसका यूज़ करके हम आसानी से ही पावर सामान पावर में डिस्ट्रीब्यूट करके मोटर्स को सप्लाई कर सख्ते है. इस पावर डिस्ट्रीब्यूटर को हम प्लस के सेण्टर में गम से चिपका देंगे। और सभी मोटर्स उसे आत्ताच कर देंगे पर अपोजिट करेंगे  यानि मोटर सीधी घूमेगी तो वाली उसके अपोजिट घूमने चाहिए तभी वो उप्पेर उड़ेगा।)

Step 4
Output of power distributor attach to battery for power supply. And in between you can place switch for power supply on / off. (पावर डिस्ट्रीब्यूटर को हम बेट्टारी आत्ताच करेंगे उसके बिच में हम स्विच लगयागे। स्विच से हम पावर को ऑन ऑफ कर सख्ते है)

Step 5
All this apply normal step ready your quad copter. Attach battery then on switch all this motors run opposite to each other and automatically copter lift in upward direction.
This copter made using small budget you want attractive wireless. So you can attach camera over the power distributor and also attach sensor, remove control. (ये सभी स्टेप फॉलो करके क्वाडकॉप्टर बना सख्ते है वो भी कम बजट में. अगर आपका बजट अच्छा हो तो आप उसमे कैमरा यूज़ कर सख्ते हो  और उसे रिमोट कण्ट्रोल पे भी चला सख्ते हो।)

Thursday, 5 April 2018

Salman khan ko 5 saal ki saja or 10,000 rs fine Jodhpur court ka faisala (blackbuck poaching case)

Salman khan ko 5 saal ki saja or 10,000 rs fine bhi Bharna padega. Jodhpur court ka faisala (blackbuck poaching case)



Kala hiran jise Black Buck kehte ha. Shikar ke case me 5 saal ki saja salman khan ko  jodhpur court  me sunai ha. Une jodhpur central jail me rakha jayaga. Central jail me kategi salman khan ki rat.Or 1 bar salman khan poche salakho ke piche. Saif ali, tabbu,nilam, sonali bender ko court ne  bari kiya gaya. Salman khan ke wakil kal bel ke liya appeal  karege.
salman khan ko 5 saal ki saja

Saja sunane ke badh salman khan ko medical test ke liya leke gaya tha. Uske badh. Usko jodhpur central jail me rakha jayaga. Salman khan ko marne ki ghamki milne ke karan use asaram ke sath jail me rakha jayaga.
salman khan ko 5 saal ki saja

Kala hiran unki prajati bohot kum ho gaya ha. Uske karan usper shikar karne per rokh lagya gya ha.

Salman khan or unke sath or bollywood ke sitare the. Saif ali, tabbu,nilam, sonali bendare ya October 1998 me hum sath sath hai movie ki shooting ker rahe the.  Ya sabhi ghumane jeep se gya the. Jeep salman khan chala raha tha. Salman khan ko kala hiron ka zund dikha. To unone goli chalaiya. 2 hirano ko goli lagi thi vaha se salman khan farar ho gya the. Uske  badh salaman khan per case hova. Or aj vo doshi sabit ho yaha ha.

Salaman khan ko saja sunane ke badh curt ke baher.Uske fan the. Police ko unke upper lathi charge karma pada. 4 bar salman khan pehle jail gya the.

Wednesday, 4 April 2018

R k jain heat and mass transfer mechanical engineering books pdf free download

R k jain heat and mass transfer mechanical engineering books pdf free download


R k jain s chand heat and mass transfer book free download from mechanicalgatenotes.com in pdf form. Gate books for mechanical engineering and made easy book for gate mechanical pdf by made easy publication available on this side.
Which is more helpful for Gate, PSU, SSC JE, BE and Diploma and also other competitive exam. In this book contain more topic related to heat transfer all theory and numerical and also whole topic cover of BE and diploma.
HEAT AND MASS TRANSFER BOOK PDF


R K gain heat and mass transfer download pdf click below on download 





Monday, 2 April 2018

Made easy hand written class notes and book of thermodynamics for gate 2018 pdf

Hello friends, I provide made easy handwritten notes and other book for gate and other exam. This notes with pdf available on this side. you want and like you can download from this site free and you want more so comment in comment box. which is more helpful for gate, ies, BE, Diploma and other comparative exam.

you want Made easy hand written class notes and book of thermodynamics for gate click below on download
MADE EASY HAND WRITTEN NOTES PDF




Saturday, 31 March 2018

how carburetor works in Suzuki gs150r motorcycle spare part and types

how carburetor works in Suzuki gs150r motorcycle


In this article learn about carburetor working , types of suzuki GS 150R and also spare part.The carburetor is a heart of internal combustion engine. It is a part of a gasoline engine in which controlled quantity of fuel gets atomized and mixes with the control quantity of air and sends to the engine cylinder in this article you will learn about The
  •  Working of carburetor
  • Types of carburetors
  • Circuits in a carburetor
  • Components and working of BS type carburetors.

Friday, 30 March 2018

Top Highest Mechanical Engineer job Salary

Top Highest Mechanical Engineer job Salary



Mechanical engineering has been the most demanded after the world's engineering disciplines. Want to earn the highest mechanical engineer salary?
Each year, a stream of mechanical engineers has graduated from their undergraduate degree and is the best job of getting a job which will give them the most technical engineer’s salary for their services. The reason for this is clear - Mechanical Engineering is one of the many demanding engineering subjects in the world and one of the many industries.

total complete information of different oil with difference number

total complete information of different oil with difference number



number of question asked about oil related to diesel oil best synthetic oil, oil viscosity, which oil for car, 10w30 oil, engine oil flush or more other information about oil 5 V30 instead of 5V 20, use of 5V 40 oil, Mobil 5W-40 Oil, rough 5 or 30 or 10 or 30, rough 5W30 or 5V20, 5w 30 mean, 

What is the best oil for your car?
Your best bet for motor oil is synthetic like Mobil 1, Valvolin Syncro or Castrol Edge, so you can get a moderate price if you are looking for sales and discounts. If your car and your driving habit deliver an artificial oil, you do not demand extra protection, you can save money using conventional oil.

Wednesday, 28 March 2018

Konse difference ha petrol and diesel engine me

konse difference ha petrol and diesel engine me



Hello friend aj ham janege petrol or diesel engine me kya difference ha. yani petrol or diesel engine me kya kya difference ha. so petrol engine ko ham SI engine kehte ha or diesel engine ko ham CI engine kehte ha. SI engine ka matlab ha spark ignition eska matlab petrol engine me power stroke ke time pe power produce hota ha. air fuel mixture jalane ke liya electric spark ki jarurat hoti ha. vo spark produce hone ke liya spark plug use karte ha. or vo spark 20,000V (DC) power pe produce hota ha. or diesel engine ko ham CI engine matlab compress ignation bhi kehte ha. eska matlab air +fuel mixture ko burn karne ke liya power stroke ke time per jis external factore ko use Kiya jata ha use compression kehte ha. jab piston TDC to BDC piston travel hota ha us samai compression se jo temperature or pressure generate hota ha vo sahi hona chahiya  tabhi air + fuel mixture sahi se jalta ha.

2 stroke or 4 stroke engine me kya फरक है

2 stroke or 4 stroke engine me kya फरक है





Hello friend aj hum 2 stroke or 4 stroke engine ke main difference ke bare me janege. app image me dono engine dekh sakhte ha jo pehla engine ha vo four stroke engine ha and dusara vo two stroke engine ha. yaha pe hamne dono single cylinder engine liya ha.
2 stroke 4 stroke difference
aj hum dono engine me difference dekhege jaise power stroke, balance, torque, weight, engine output, temperature engine running hoga tab ka, cooling system, mileage, lubrication, Design, and friction. aj hum etne 2 stroke or 4 stroke engine ke point difference dekhege.

Tuesday, 27 March 2018

spark plug ko kaise clean karte ha

Spark plug ko kaise clean karte ha.





Spark plug clean ku karna padta ha. hum jab bike lete ha us bike ko jada din hone ke karan kabhi kabhi bike start nahi hoti ha to kabhi bandh pad jati ha. kuki spark plug per carbon chud jata ha. us carbon ko time pe clean karna padta ha nhi to bike bar bar bund hogi ya. start bhi nahi hogi. ya problem new bike me nhi hoti maximum ya 1 to 2 year old bike me hoti ha. is liya es article me hum janege spark pluge clean kaise karte ha. ho bhi gharme hi clean kar sakhte ha
spark plug before and after wash
spark plug clean karne ke liya hame thoda petrol, sin paper, gris, tooth brush, spark plug nikalne ke liya spanner 

Friday, 16 March 2018

FLUID MECHANICS & MACHINERY ki jankary gate ke liya

PROPERTIES OF FLUID

         Matter exists in three phase solid, liquid and gas. The phase of matter depends upon the inter-molecular attraction between two molecules. Solid is inter-molecular forces are very strong. Molecules very close to one another. Liquid is inter-molecular forces are weak. More space between the molecules. Gases is inter-molecular forces are very weak. More space between the molecules. Fluid is defined as substance which has capacity to flow. That deform continuously under the action of shear stress, no matter if it is small. NO definite shape of its own, but conforms to the shape of container. Fluid mechanic is branch of engineering science which is deals with the behaviors of the fluids at rest as well as in motion HYDRAULICS is topic in applied science and engineering dealing with the mechanical properties of liquids.

HEAT AND MASS TRANSFER ke important kuch point

HEAT AND MASS TRANSFER

                 INTRODUCTION TO HEAT TRANSFER Transmission of energy from one area to the other as a result of the temperature gradient is known as heat transfer. APPLICATION  Internal combustion engine, Refrigeration and air conditioning, Design of cooling systems for electrical motors, generation and transformer, Heating and cooling of fluid, Heat treatment of metals, Dispersion of atmospheric pollutants. MODE OF HEAT TRANSFER is CONDUCTION, CONVECTION and RADIATION.

Friday, 9 March 2018

Made easy handwritten class notes gate free download basic thermodynamics 2018[ PDF ]

Basic thermodynamics 

                 
Made easy study material and books  for mechanical engineering gate notes available on this site you can download free and made easy books for mechanical engineering available.
Thermodynamics is the branch of science which deals with energy interaction and it's effect on system and surrounding Energy is can be understood as the ability to cause changes System System can be a fixed mass or a region in space where our study in focused Surroundings is a Every thing except the system is called surrounding. The part of the surrounding which is directly affected by the system is called immediate surrounding Boundary is a real or imaginary surface which separates the system from the surrounding Boundary can be fixed or movable.





TYPES of system Pressure (gases) Acceleration to kinetic theory of gases the molecules of the gases are in continuous random motion and due to there random motion they collide with one or other and the walls of the container due to this collision force is extorted and avg normal force per unit area is termed pressure.

YOU WANT GATE MATERIAL FREE DOWNLOAD

MADE EASY HAND WRITTEN CLASS NOTES BASIC THERMODYNAMICS:- CLICK  BELOW
Properties of the system:-Any characteristics of the system is called property of the system Properties can be classified as 1) Intensive, 2) Extensive .Intensive (intrinsic) Independent of mass of the system under consideration eg. Pressure, temperature, density etc. All specific properties are intensive property eg. Sp.  Volume, sp. Enthalpy, sp.  Internal energy etc. Extensive (Extrinsic):-Depends on mass of system under consideration eg.  Volume, Internal energy, Enthalpy, entropy etc. State of the system and processes:-Any condition of the system is called as state of System State is specified by the properties of system If any one of the property changes, the state of the system changes.  The change in state of system is called process. the infinite state through which the system pass, while going the initial state to a final state is called process path.

The processes can be classified as : 1) Quasi-static 2) Non-Quasi-static A process is said to be a quasi-static process if it takes place infinitely slowly otherwise non quasi-static In quasi-static process the properties remain uniform throughout where as in non-quasi-static process the properties are non-uniform Friction-less quasi-static processes are reversible processes and also most efficient processes Reversible and Irreversible processes :- If  process is said to be a reversible processes If it can be reversed in direction following the same path as that of the forward process without leaving any change in the system and surrounding Note :- Ideal flow through a nozzle ,  diffuser etc. Will be considered as reversible.

Macroscopic approach in this approach the avg.  Molecular behavior is studied and individual behavior is disregarded. This approach is applied when the continue concept is solid Continuum is a   matter is treated as continuously distributed without in void present continuum can be considered if the mean free path is much smaller than the system dimension. Mean free path it is the avg.  Distance traveled by the molecules between two successive collisions. Microscopic approach this approach is applied when the matter become rare (Density is very less) hence the avg.  Property become meaningful in this approach we focus on individual molecules. It is used in space exploration. One of the methods is ratified gas flow theory.

Thermodynamics Equilibrium is the system is said to be said to be thermodynamics equilibrium if it satisfied the following equilibrium conditions. Thermal equilibrium Equality of temperature , mechanical  equilibrium Equality of forces, chemical equilibrium Chemical reaction potential should not be present , Phase equilibrium Mass of each phase remains constant with time .Pure substance :- A substance is said to be pure substance if it is of Homogeneous chemical composition throughout (P+ F = C + n ), P is a  No.  Of phase (solid, liquid, gas), C is a No.  Of chemical component, N is a No. Of non-composition variable. DOF degree of freedom DOF is the minimum no. Of independent intensive variables required to fix the state of the system. 

 Zeroth law of thermodynamics According to Zeroth law if a body ‘A’ is in thermal equilibrium with body ‘C’ and also body ‘B’ is in thermal equilibrium with body ‘c’ then body ‘A’ and body ‘B’ is in thermal equilibrium with each other In Zeroth law body ‘c’ acts as thermometer Zeroth law gives the concept of temperature measurement Hotness or coolness is the feeling associated with the rate of Heat transfer Temperature is a parameter which represents random energy per unit molecules. 

TYPES of thermometer Thermometers are based on finding thermometric property. Thermometric property is a property which helps in finding temperature for volume and length in mercury thermometer Temperature exactly show the physical condition of given fluid 1) Resistance Thermometer or Thermistor It is based on Wheatstone bridge principle and the Thermometric property is the resistance 2) Thermocouple It is based on see Beck effects acceleration to this effect of two metals are joint to form two different junction and they are maintain of different temperature then emf is generated which is directly properties to the temperature difference by measuring the emf the unknown temperature can be found Emf , voltage or current is the Thermometric property Peltier effects is opposite of see back effects and it is used for thermo- electric refrigeration 3) constant volume gas thermometer :- IV)  constant pressure gas thermometer Both cv and cp gas thermometer are called ideal gas thermometer because material of construction is ideal gas Ideal gas thermometer are independent of material of construction that is if the gas is an ideal gas it does not matter which gas it is.

It is more important subject as a gate point of view and also important in SSC JE exam near about 30 number of question asked in SSC JE exam. In gate exam number numerical basis question asked and also in je exam objective type question asked. in this subject contain thermodynamic law more numerical asked on this basis. Thermodynamics are used in the heat conversion area areas Mechanical Engineering Thermo-Science design engine and power strips, heating, ventilation and air conditioning (HVAC) systems, heat exchange, gas sink, radiator, refrigeration, insulation and others are used. i will provide important notes for gate and ssc je very soon.

STRENGTH OF MATERIALS ke bare me jankari

STRENGTH OF MATERIALS

Elasticity = when an external force acts on a body, the body tends to undergo some deformation. If the external force is removed and the body returns to its original shape and size, then the body is known as elastic body. If the body comes in its original shape then it is called completely elastic body. Elastic limit marks the partial break down of elasticity beyond which removal of load result in a degree of permanent deformation. Steel, aluminum, and copper, concrete can be considered completely elastic within a certain range.

ENGINEERING MECHANICS lecture 1 ki jankari

ENGINEERING MECHANICS


               Mechanics this science is defined as a branch whose condition describes and predicts Body or body movement under powerful operation the engineering mechanism applies Principle for design, taking into consideration the principles of military effectiveness. Static Static’s are associated with the balance of the body. Hard body A strict body is defined as a certain amount of substance, the portion of which has been fixed The physical body is never completely related to each other, but it is quite rare Under the load's proceedings. If the deformation is negligible if compared to its size the body is called strict. Forced Persistent can be defined as any action that prompts someone to change the state of rest or movement. To whom it is applicable To define the full force, the required three numbers are called its S.


Thursday, 8 March 2018

JOB NOTIFICATION

JOB NOTIFICATION



NAGPUR METRO RAIL CORPORATION LIMITED. {17 POST} POST NAME = Deputy General Manager/ Account Assistant/ Assistant manager/ office assistant EDUCATION = B.Com/M.B.A{Finance/HR}/CA/ICWA AGE = 18-35 Year age on 27-03-2018 PAYMENT = Depend on post EXAM FEES = OBC/Gen-Rs.400/,--Women/SC/ST= No Fees LAST DATE = 27-3-2018 APPLICATION= ONLINE LINK = http://www.metrorailnagpur.com

POWER PLANT ENGINEERING kya ha jankari exam point of view

POWER PLANT ENGINEERING


Gas Turbine It is a mechanical device converts one form of energy into useful form of energy. Type of engine:-1} I C engine:- In the case of  IC engine the product of combination itself is the working fluid and produces output Compression and expansion takes place at Same location 2}E C engine :- In the case the case of EC engine the product of combustion are transferred their heat to the another working fluid and which it used for providing some useful output. Advantage of gas Turbine over IC engine Simple mechanism ,High speeds can developed due to the rotary engine ,Easy balancing, Compact that is weight to power ratio is less Disadvantage :-1}The comp.  Which is used in gas Turbine handling the gaseous phase of working fluid which is not negligible in comparison to the Turbine work, therefore the net workout put reduce and it's efficiency work, therefore the net workout put reduce and it's efficiency is less as that IC engine.2) high speed reduction gear are required as the value of centrifugal force are high. 3) High heat resistant material are required for the gas Turbine because these are subjected to higher temperature continuously for a long period of time. (Creep failures changes) 

CASTING AND WELDING

 CASTING AND WELDING


Manufacturing process :-It is process of converting raw material into a finished product It is a process of value addition to the raw material Classification :-1) casting -- zero process ( casting ), 2) Forming - Additive process ( Rapid prototype ), 3) Fabrication process -- subtractive process, 4) material removal process -- subtractive process. Casting  :-It is process in which molten liquid metal will be allow to solidify in a pre defined mould cavity. ORE = RAW material of casting1) pattern 2) mounding sand  3) tools Mould box :-Two box, Three box Advantage 1) complex shape of object produce ,2) It is simple and leas expensive process ,3) Ductile and brittle material can be produced, 4) large size object can produce by casting only, Ex. Machine tool beds ,  engine blocks,  gear box housing ,  Road rollers. Limitations :- Poor surface finish due to liquid  metal is contact with grains of mounding sand Ra = 10.15 um Due to permeability of mounding bond (press different )  gas defects are more so casting is not used for domestic cylinder Bcs  of non - uniform condition. 1) casting objects are not having smooth surface finish 2) it is laborious and time consuming process 3) there is a possibility of gas defect in the casting 4) casting object are not having uniform mechanical properties due to non uniform cooling.

MATERIAL SCIENCE

MATERIAL SCIENCE 

Material science:-A study of relationship between structure and properties of engineering material Microstructure:-microstructure is defined as the internal structure details of a material, which can be observed at high magnification under a microscope  Microstructure include, 1) Grain and grain boundaries 2) phase and phase Boundary 3) grain orientation luster Microscope us observed at magnification more then or equal to 100x Metallic sample are opaque - metallurgical micro-structure atom Transparent sample :- pathological microstructure examine (blood  and urine sample )  To change microstructure :- manufacturing process Properties are depend of phase change :- microstructure change Macrostructure :-It is defined as the external geometrical characteristics of an object which can observed by naked eye or under the microscope at lower magnification of the order of less than 100x Only to achieved Macro structure improvement welding ,  forming ,  machine.