In this article we learn about new topic Casting Inspection Methods so without wasting of time let's see,
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| Casting Inspection Method |
Casting Inspection
Casting inspection is a process of evaluating the quality and integrity of cast metal components. It involves various techniques and methods to identify potential defects, ensure dimensional accuracy, and verify the structural soundness of the casting. The inspection is typically performed after the casting process is complete but before the final product is used or assembled.
Casting inspection is act of checking the goodness of casting. Once the castings have been cleaned, and inspected to check if they will perform specified functions. It broadly covers a number of methods and techniques used to check the quality of techniques to check quality of casting. Casting inspection methods are classified into following categories.
Casting inspection methods are below
1) Visual inspection
In Visual inspection visible defects that can be detected allow a means for discovering in pattern equipment casting process. Visual inspection may prove insufficient only in detection of sub surface or internal defects.
2) Dimensional Inspection
Dimensional inspection is important inspections for castings. When precision castings required, we make samples for inspection in tolerance, Shape size and also count the profile of the cast. Various methods of dimensional inspection of casting,
a) Special fixtures.
b) Co-ordinate count and marking system.
c) Standard measuring instruments to check size of the cast.
d) Gauges for checking of profile, curves, and shapes.
3 X- Ray Radiography
The flow detection teats are performed in casting the defects are not visible. Flaw detection test carried out for performed for internal, defects, surface defects etc. Radiography is important flaw detection test for casting. Radiography use in radiography testing is higher energy type of electromagnetic waves see as visible light. The radiation comes from radioactive source.
4) Magnetic particle inspection
Magnetic particle inspection test is useful to reveal the location of cracks that extend to surface of iron or steel castings, which are magnetic nature. Foremost casting magnetized and then iron particles are dredge all over track of magnetic field. The particles align themselves in direction of lines of force. Discontinuity in casting the line of force to bypass the breach and to concentrate around extremities in the defect.
5) Fracture test
Fracture test is done by inspect fracture surface of the casting. It is possible to observe coarse graphite and shrinkage cavity, pin hole etc.
6) Ultrasonic testing
Ultrasonic testing is used for detecting internal voids in the casting based on principal of reflection of high frequency sound waves. The advantage of this test over test that defect, even if in the interior, is only detected and located accurately, and its dimensions can measured quickly without any damaging the casting.
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| Ultrasonic Testing |
7) Fluorescent dye penetration test
This method is simple and applied for all cast metals. In this method we use use ultraviolet light for detecting cracks easily detect under this light, and thus defects are easily revealed.
8) Microscopic examination
Microscopic examination can be enable the study of microstructure of metal alloy, the type and nature of any treatment given it and mechanical properties. Composition analysis can be done by using microscopic inspection. Distribution of nanometalic inclusion can also be found from in this inspection method.
9) Sulphur print test
Sulphur exist in iron or steel in one of two forms either iron sulphide or magnetic sulphide. In this test the distribution of Sulphur inclusions easily examined by this test.
10) Micro etching test (Macroscopic examination)
Macroscopic inspection test is used as routine control test in production of steel because it offer a convenient and effective for control internal defects in the metal.
11) Chill test
Chill test is convenient for approximate evaluation of graphitizing tendency of iron forms an important and quick shop floor test for ascertaining iron will ne of class desired. Depth of chill obtained on test piece is affected by carbon and silicon present. Therefore related to carbon equivalent, whose value determines iron grade.
So in this article we study the Casting Inspection Methods hope you understand well. Thanks for reading.
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