Function summary:

        Automatic dotting machine is mainly used for dotting the original standard distance of metal bar, steel bar and wire tensile sample。

Main features:

• The needle is made of tungsten steel with a hardness of HRC60-65, and can be punched 150,000 times without grinding and changing the head, with a long service life;

• The needle is driven by air pressure, which is reliable and clean. When facing the specimen with different surface hardness, the pressure can be adjusted to change the strength of the needle, so as to obtain the appropriate effect。

• This type of servo motor drives the ball screw, with high dot accuracy, can be quickly switched between 5mm and 10mm point distance, especially when the 5mm dot distance is obtained, it is no longer necessary to double clamp the sample, to ensure dot accuracy。

Relevant standards:

• GB/T 228.1 "Metal materials tensile test Part I: Room temperature test method"

• Iso 6892-1 metallic materials-tensile testing-part1:method of test at room temperature

Technical indicators:

   Change the automatic dotting machine suitableA test aid used to mark the test distance before the test of the steel bar tensile test specimen。