سختی سنج Webster آلومینیومی سری MW همچنین سختی سنج نوع گیره نیز نامیده می شود، آنها به سه نوع MW، MW-20a، MW-20b تقسیم می شوند، سبک هستند و قابل حمل هستند و می توان آنها را با یک دست نگه داشت، در هنگام آزمایش نیازی به نمونه ندارند، بدون بالا الزامات مهارتی این می تواند تست NDT سریع قطعه کار را در محل انجام دهد و نیازهای کنترل کیفیت و نرخ واجد شرایط را برآورده کند. به طور گسترده در تست تولید، بازرسی پذیرش و بازرسی کیفیت محصولات صنایع آلومینیوم و بسیاری از شرکت های پنجره، درب و دیوار پرده، و همچنین در بخش بازرسی کیفیت مهندسی و نظارت فنی استفاده می شود. یک وسیله ضروری در افزایش نرخ صلاحیت و صرفه جویی در هزینه است.
Function & application
l Confirm the workpiece is heat-treated or not,
l Whether the workpiece is made of improper alloy;
l Testing over-long or over-weight workpiece;
l Project acceptance of aluminum factories
Do project acceptance in companies of windows, door and curtain wall
Working Principle
MW series Webster hardness tester adopts indentation principle. Under pressure, the indentation is inversely proportional to the material hardness. HW is short for hardness of Webster, when the value is 16, it means the hardness is 16HW. The value can be read on the dial and can be changed into HV, HR. If the sample hardness is out of range, the needle will point at 20, if the range is too low, the needle will not move and it will stay at 0.
Working Conditions
The tester should be used in environment of clean, no vibration and no corrosive medium.
Instrument Features
No corrosion and keep precision after we have put them in salty water(5%) for 4 hour. After 100 times 0.5meters falling test, the pointer does not deflect.Thus to ensure the quality of the instrument.
Small portable instrument, small size, light weight, one-handed operation, can quickly measure the hardness of aluminum alloy;
Test process without sampling, can be non-destructive testing of material hardness;
Easy to learn, no high-skill skills of the operation requirements, the human operation on the measurement results less impact, very suitable for the production site for rapid hardness testing of materials;
There is no strict limit on the shape of the workpiece to be measured, suitable for the detection of different shapes of aluminum;
Equipped with calibration sets to solve the problem due to multiple full scale calibration if there is a calibration error;
Detection and display separated, to avoid blocking display so that user can not read the value.
Operating Method and Attentions
Put the specimen between the anvil and the indenter, press down the handle until the bottom is felt. At the time the dial indicator will point at a reading which is the hardness value. Excessive pressure beyond this limit will not damage the tester, but it is unnecessary. Hold tight the handle when reading the value. Any torsion or movement will make the reading incorrect.
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