Quenching Testing Machine Quenching Testing Machine
Impact Specimen Notch Projector

CST-50 Impact Specimen Notch Projector

Usage and Characteristics

CST-50 Type Impact Specimen Gap Projector, based on  the practical requirement of the domestic customers and according to the demand of impact specimen gap in GB/T229-2007,it is the special equipment which checks the Charpy V-type and U-type gaps precision. The instrument magnifies impact specimen gap’s outline and projects it onto screen to compare with standard sample drawing of the impact specimen V-type or U-type gaps. This helps to examine whether the tested impact specimen gap is qualified or not. Which can meet American standard,European standard ASTM E23-02a,EN10045,ISO 148,ISO83 and so on.


Main technical parameters

Diameter of the Screen: 200mm

Size of worktable

Size of square worktable: 110×125mm

Diameter of round worktable: 90mm

Diameter of working screen: 70mm

Journey of worktable

Longitude: ±10mm

Latitude: ±10mm

Rise and fall: ±12mm

Scope of Revolving of the worktable: 0° ~ 360°

Magnification of the instrument: 50X

Magnification of the object lens: 2.5X

Magnification of the objective lens for projection: 20X

Illuminant(Tungsten-halogen lamp):DC 12V 100W



Supply power:220V 50Hz 150W



This machine only needs electrical source and is easy to operate. The screen of this testing equipment has visible graduation and labels tolerance zone, angle value, depth line. So you can read the gap error accurately and it can satisfy ASTM En-23 and some other international standards. We can manufacture projectors which satisfy the demand for testing 3mm or 5mm gap according to clients’ requests.