Mechanical Engineering & Documents

E book : Mechanical Engineering Design by McGraw-Hill

What is the difference between EN8 and MS material? Answer : EN 8  Material MS Material EN 8 material has higher tensile strength. MS material has comparatively low tensile strength. EN 8 material applicable when high strength required. MS material is applicable when high strength not required. EN 8 material contain 0.4% C MS material contain up to 0.25% C EN 8 material is use when other heat treatment process is carried out on it. MS material is use when no need of other heat treatment process on it. EN 8 material can use instead of MS material. MS material can not use instead of EN 8 material. Material is more expensive then MS. Material is less expensive then EN 8. Let me know if there is a addition of point or correction in any point.

Product Development Canvas is now available in PDF format.

Observation Canvas / Matrix is now available in PDF format.

Idea Funnel Canvas now available in PDF format.

Ideation Canvas now available in PDF format.

Business Model Canvas is now available in PDF format.

Annealing is a opposite process of hardening process . Why annealing process have to perform :  Relieve internal stress Soften material Increase ductility Refine the grain structure Process : Material is heated above the re-crystallization temperature and hold material at specific temperature and time. And last material is cool at room temperature. Cooling process is depend upon the metal and required properties. Usually material are cooled inside the furnace. Also material is cooled by burying them in ashes, lime, or other insulating materials.

Difference between Annealing & Tempering is as per below. Annealing Tempering Annealing is a primary process. Tempering is a secondary process. Usually done after hardening process. Material is heated above re-crystallization temperature. Material is heated below re-crystallization temperature. Cooling process of material is take place inside the furnace. Cooling process of material is take place outside the furnace. Please let me know if there is a any query or want to add points.

Strengths of material Strength of material is a ability of material to withstand an applied load without failure or plastic deformation. Tensile Strength Tensile strength is a ability of material to be stretched or pulled without breaking. Toughness Toughness is the amount of energy per unit volume that a material can absorb before rupturing. Brittleness A material called brittle, when material subjected to stress then it breaks without significant plastic deformation. Plasticity Property of a material to be deformed repeatedly without rapture by the action of a force, and remain deform after force removed. Elasticity Property of a material to be deformed repeatedly without rapture by the action of a force, after removing material it regain it's original shape.

E book: Treatise on Thermodynamics Download PDF file from here .

Tempering is process use to increase toughness of metal. This process is perform on iron based material and usually used after hardening process for reducing excess hardness. This process is done by heating metal below critical point and usually cool by air. There are some steel that are quenched after tempering process for avoiding brittleness. Tensile strength of harden steel may increase when tempering process is done about 450°F. And above this temperature it decrease. Hardness is reduce according to temperature at which tempering process done. Note : Only for high-speed steel material, hardness is increase during tempering process about temperature 1550 °F . Minimum time required for 1 mm thick material for tempering process is : 1 Hour. Time increase for every addition of 1 mm is : 1 Hour. Tempering increases softness, ductility, malleability, and impact resistance.

E book: Fluid Mechanics with Engineering Applications Download PDF file form here .

E book: Centrifugal Pumps, Designs & Application Download PDF file from here .

E book: Heat and Mass Transfer a practical approach Download PDF file from below link: 1. Table of contents 2. Preface 3. Chapter 1 : Basics of Heat Transfer 4. Chapter 2 : Heat Conduction Equation 5. Chapter 3 : Steady Heat Conduction 6. Chapter 4 : Transient Heat Conduction 7. Chapter 5 : Numerical Methods in Heat Conduction 8. Chapter 6 : Fundamentals of Convection 9. Chapter 7 : External Forced Convection 10. Chapter 8 : Internal Forced Convection 11. Chapter 9 : Natural Convection 12. Chapter 10 : Boiling & Condensation 13. Chapter 11 : Fundamentals of Thermal Radiation 14. Chapter 12 : Ration Heat Transfer 15. Chapter 13 : Heat Exchangers 16.  Chapter 14 : Mass Transfer 17. Chapter 15 : Cooling of Electronic Equipment

E book : Fluid Mechanics by P. K. KUNDU Download PDF file from here .

E book: Machine Design by Khurmi Download PDF file here .

E book : Thermodynamics by Yunus and Michael Download PDF file from here .

E book : The Finite Element Method in Engineering S.S.Rao Download from here .

Download PDF file of welding PPT. Click here for download.