INSPECTION AND ASSAYING of SUBSTANCE DECANTS CASTING METAL ENGINEERING CLASS XII/ SEMESTER 5 ELEMENTARY COMPETENCY 2

Visual Test Visual assaying that is assaying process done by using device indera ocular without other auxiliaries Assaying of direct done by tester by seeing substance coran This assaying limited to equiamplitude surface defects which can be seen by device indera ocular Result reached depended from accuracy, skilled and experience of from tester Teknologi dan Rekayasa

Visual Test Surface roughness and Porositas Retakan Metal flow Inklusi molding sand Deformation or melintir Scale Teknologi dan Rekayasa

Kinds Of Defects Decants Teknologi dan Rekayasa

Non Destructive Test (NDT) Inspection of Equiamplitude surface : Dye penetrant Inspection In : Magnet powder Ultrasonic Modulation echo Radiography X-ray Radiography gammaray Teknologi dan Rekayasa

Inspection of Equiamplitude Surface Defect With Dye Penetrant Investigates smooth defect at equiamplitude surface coran Applicable to all metal types, either magnetic and also no There is 2 inspection : 1. With fluorensen 2. Colourant giving Same inspection principle, difference at fluid colour penetran and its(the developer Teknologi dan Rekayasa

Defect Inspection Procedure With Dye Penetrant Cleans equiamplitude surface of substance decants which will be investigated from rust, other oil and impurity Giving of fluid penetran by way of died or dabbed, or sprayed sehinggga to cover up equiamplitude surface which will be tested. Impurity cleaning Penetrant liguid of giving Teknologi dan Rekayasa

Specimen is let [by] during 10 – 20 minutes, that fluid penetran diffuses at retakan. The duration depends on recommendation from suggested at fluid penetran Cleans equiamplitude surface of substance decants tested by denga road(street is mop with cloth Teknologi dan Rekayasa

Gives fluid developver that fluid penetran is entering at retakan can interest and emerges equiamplitude surface. Be awaited during 5 – 10 minutes to give opportunity of fluid penetran to interest fluid developver Investigates crack which seen at equiamplitude surface by illuminating equiamplitude surface of specimen with ultraviolet [light/ray] in dark room. Teknologi dan Rekayasa

Defect Inspection In With Magnet Powder Inspection applied to know defect below(under equiamplitude surface or equiamplitude surface Only limited to coran is having the character of magnetic Can only know defect situation or location Cannot know depth of defect Teknologi dan Rekayasa

Defect Inspection Procedure With Magnet Powder Substance tested flown with high current, causing yields magnetic field Equiamplitude surface of specimen is sowed with magnet powder Observes line of force manet formed by iron powder. If(when at substance decants there is defect hence at the district will arise stronger magnet attractive force, so that powder gathers at the district Teknologi dan Rekayasa

Kinds Of Way Magnetization Current aksial Pierced current Plot Coil Between poles Teknologi dan Rekayasa

Ultrasonic Defect Inspection Exploits waving inaudible high frequency of man ( 20000 jitters per second /20 Khz) Wave applied 250 – 15000 Khz Waving then at substance, if there is defect will be bounced again Teknologi dan Rekayasa

Inspection of Modulation Defect Echo Applies one probe which is functioning as transmission and receiver Noise jitter transmitted from probe kedalam substance decants Noise jitter is bounced again and received [by] probe, distribute to cathode-ray tube Seen modulation drawing showing wave reflection of the noise Teknologi dan Rekayasa

Inspection of Defect Radiography X-ray Substance decants must clear of oil and impurity Installs film at its(the place Substance decants tested put down between x-ray tube and film Animates x-ray, so that about substance decants and pierced to film Does film cleaning Observes film accurately if there is defect hence at film will seen black stain Teknologi dan Rekayasa

Inspection of Defect Radiography X-ray Teknologi dan Rekayasa

Inspection of Defect Radiography Gammaray Gammaray obtained from radio-activity isotope from a nuclear reactor As energy source is used [by] Cobal – 60, Iridium – 192, and calsium 137 Gammaray can lead to all directions Cooperative principle with X-ray Teknologi dan Rekayasa

THANK YOU CREATED BY : HERU KARYANA, SPd SMKN 2 KLATEN Teknologi dan Rekayasa