what is solidworks ? SolidWorks is a popular 3D computer-aided design (CAD) software that is used for creating and designing complex models and assemblies in mechanical engineering, product design, and other industries. It is developed by Dassault Systèmes, a French software company that also owns other popular software such as CATIA and SIMULIA. SolidWorks provides a range of tools and features for creating 3D models, such as sketching, surface modeling, solid modeling, sheet metal design, and assembly modeling. It allows users to simulate and analyze the performance of their designs before manufacturing, including motion analysis, finite element analysis (FEA), and computational fluid dynamics (CFD). It also supports collaboration and sharing of designs with other users through various formats such as STEP, IGES, and STL. SolidWorks is known for its user-friendly interface and intuitive design, which makes it easy for beginners to learn and use. It is widely used in industries such a...
Casting Process :
It is the process in which material is liquefied by heating and poured into previously prepared mould cavity where it is allowed to solidify .
Solidified products are taken out of the mould cavity , trimmed and cleaned to shape .
Classification of casting processes :
1. Based on type of mould :
1. Expendable mould
2. Permanent mould
2. Based on purpose of casting :
1. Ingot , slab and billet casting
2. Remelt ingots
3. Shape casting
Other Casting Process :
1. Sand Casting
2. Die Casting
3. Shell moulding
4. Investment Casting or Lost wax Process
5. Centrifugal Casting
6. Plaster Casting
7. Slush Casting
8. Continuous Casting
1. Sand Casting :
Silica sand is used more universally for making casting than any other mould material and it is called sand casting .
Sand Casting Defect :
1. Open blows and blow holes
2. Entrained air and other gases
3. Shrinkage defects
4. Hot tears (cracks)
5. Misruns and cold shuts
6. Inclusions
7. Gears in metals , pin hole porosity
8. Cuts and washes
9. Metal Penetration
10. Mold Shift
Inspection methods for defects :
1. Process Inspection
2. Visual inspection
3. Dimensional inspection
4. Pressure Testing
5. Radiography
6. Magnetic Particle Testing
7. Penetrant Testing Methods
8. Ultrasonic Testing Methods
2. Die Casting :
In die casting process, pressure is used to inject molten metal into the die cavity .
Die casting have excellent surface finish and dimensional accuracy .
3. Shell moulding :
This is modification of sand casting in which a relatively thin shell forms the mould cavity into which the molten metal is poured .
Casting produced by this process have better surface finish and closer dimensional tolerances than sand Casting.
4. Investment casting or lost wax process :
In this method , a wax pattern of part of the mould is embedded (invested ) in a fluid ceramic material that subsequently becomes solid .
Extremely complex sections can be produced by this method .
5. Centrifugal Casting :
Castings that have rotational symmetry , such as long cylinders ,are conveniently made by pouring the casting alloy into a metal , graphite or sand mould rotating above its axis of symmetry .
Modification of Centrifugal Casting :
Three types :
1. True centrifugal casting
2. Semi centrifugal casting
3. Centrifuging
6. Plaster Casting :
If the sand casting process is changed so that plaster of Paris is substituted for sand as the moulding material , the method is called plaster Casting .
7. Slush Casting :
Hollow casting ,such as statues , can be made by pouring a low melting point alloy into a bronze or a plaster mould and quickly pouring out the excess molten metal after a thin solid sheet has formed .
8. Continuous Casting :
Generally this is used for the production of rods , pipes , sheet metals , and other particles known as semifinished products in an uninterrupted process .
Normally copper will be used for mold sufficient cooling system .
Comments