What are the mediums used in sculpture?
An enormous variety of media may be used, including clay, wax, stone, metal, fabric, glass, wood, plaster, rubber, and random “found” objects.
When found objects are combined in a work of art the media or process is called?
Assemblage is an artistic process whereby two- or three-dimensional artistic compositions are created by combining found objects. While similar to the process of collage, it is distinct in its deliberate inclusion of non-art materials.
What is the name for the largest form of sculpture usually additive but sometimes subtractive which uses the surface of the globe or the natural environment as its primary material?
The Great Serpent Mound is considered as the largest sculpture in the world.
What are different casting defects?
TYPES OF CASTING DEFECTS
- Gas Porosity: Blowholes, open holes, pinholes.
- Shrinkage defects: shrinkage cavity.
- Mold material defects: Cut and washes, swell, drops, metal penetration, rat tail.
- Pouring metal defects: Cold shut, misrun, slag inclusion.
- Metallurgical defects: Hot tears, hot spot.
What are the common welding defects?
So below we’ll learn about the 7 most common welding defects, their types, causes and remedies.
- Weld Crack. 1.1 Causes of cracks: 1.2 Remedies:
- Porosity. 2.1 Causes of porosity:
- Undercut. 3.1 Causes:
- Incomplete Fusion. 4.1 Causes:
- Incomplete Penetration. 5.1 Causes:
- Slag Inclusion. 6.1 Causes:
- Spatter.
Which of the following defects are the examples of pouring material defects?
5. Which of the following defects is not an example of type “pouring material defects”? Explanation: Misruns, cold shut, shrinkage cavity, micro porosity, mismatch and metal penetration are the pouring metal defects. Among these, misrun is caused when the metal is unable to fill the mould cavity completely.
What are the common defects of casting state their causes and remedies?
You and your supplier can typically address these casting defects and causes by modifying the mold.
- Cuts and washes. Cuts and washes are areas of excess metal.
- Fusion. Fusion occurs when sand grains fuse with molten metal.
- Run out.
- Swells.
- Drops.
- Rat tails, veins and buckles.
- Metal penetration.
How do you test for casting defects?
Non-destructive testing (NDT) is a common method for inspecting castings without having to damage the product under assessment. NDT can help identify defects that adversely affect the material strength. Cracks appear after a melt has solidified in the form of thin fissures on the casting surface.
What is Draft allowance also known as?
Explanation: Draft allowance is also known by the name of tapering allowance, as the diameter of the cast goes on increasing in a trapezoidal shape from the bottom. A pattern has a draft allowance of an order of 1 and 3 degrees for external and internal surfaces respectively.
What are the different types of pattern allowances?
Types of Pattern Allowances
- Shrinkage or Contraction Allowance.
- Draft Allowance.
- Finishing or Machining Allowance.
- Distortion or Camber Allowance.
- Rapping or Shaking Allowance.
Which type of allowance is negative?
4. Which one of the following is a negative allowance? Explanation: All metals shrink when cooling except perhaps bismuth. This is because of the inter-atomic vibrations which are amplified by an increase in temeprature.
Which is a negative allowance?
There are no standard values for this allowance, as it is heavily dependent on the personnel. This allowance is a negative allowance, and a common way of going around this allowance is to increase the draft allowance. Shaking of the pattern causes an enlargement of the mould cavity and results in a bigger casting.
Which of the following is pattern allowance?
The following allowances are commonly provided on a pattern: 1. Draft Allowances 2. Shrinkage Allowance 3. Machining Allowance 4.
Which allowance is neglected in small casting?
The Magnitude of shake allowance can be reduced by increasing the tapper. For Small And Medium Sized Castings, This Allowance can be ignored,but for large sized and precision castings, however Shrinking Allowance is to be considered.
Which of the following is not a pattern allowance?
Which of the following is ‘not’ an allowance given to the pattern for casting? Explanation: A hole is made during the machining or finishing of the casting and is not a type of allowance given to the pattern.