سختی سنج وبستر سری MW-B92

 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
Aluminum outer material

Doors and windows curtain wall, decoration works

Tourism, sports, stationery aluminum processing

Aluminum tubes, aluminum, aluminum, aluminum rods and other aluminum products production and processing

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
Sample surface should be clean and clean without oil, the surface of the dirt, especially fine sand will greatly affect the measurement accuracy;

Sample surface coating will seriously affect the measurement accuracy, with sandpaper or solvent to remove the coating after the hardness measurement;

The instrument should be used in environments with strong vibrations, damp and corrosive gases;

This series of products according to the different thickness of the four models available for users to choose, different models have different display and measurement range.User according to the shape size and thickness of the sample to select the appropriate The instrument is measured.

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
For materials with a thickness less than 0.88mm, the use would meet an "anvil effect". At this time  a small trace will appear on the back of the measured material. this "anvil effect" will cause measurement error, the larger the traces, the greater the error; the more soft the material, the thinner the thickness, this error will be greater .The For thinner materials, it is helpful to reduce the error caused by the "anvil effect" by superimposing the two materials with the same material.

Instrument Maintenance
The instrument is a precision instrument, its life depends whether in proper use or good maintenance.User should always remember:

Prevent contamination, use soft cloth to clean the dust or stain of the tester especially remove the contamination on the dial head or it will cause error.

Prevent rust, when using pay special attention to its waterproof performance except clean it frequently, many parts will bear rust with water, the rust in the dial head will cause the instrument useless.

Prevent falling off, the tester is made up of many precision components, falling off will result in permanent damage to some parts.

Do not dismantle, all the components had already been put together properly in factory except calibration.