CE certified , portable hardness tester AHT120 with printer, Leeb hardness
USD $550 - $680 /Piece
Min.Order:1 Piece
Beijing Filter Trade Company Limited
CE certified , portable hardness tester AHT120 with printer, Leeb hardness
portable hardness tester AHT120
Technical Specification
Measuring range | (170-960)HLD (17.9-69.5)HRC |
Hardness scale | HLD,HB,HS,HRA,HRB,HRC,HV |
Measuring direction | 360° |
Tolerance | ±6HLD(when HLD=760) |
Repeatability | 6HLD(when HLD=760) |
Diameter of printer paper | 40mm |
Width of printer paper | 44.5±0.5mm |
Power | 12V/600mmA |
Charging time | 2-3.5 hour |
Humidity | 90% |
Operating temperature | 0°C-40°C |
Weight | 0.6kg |
Overall dimensions | 234×88×46mm |
Max.Workpiece Hardness |
Refer to Technical specification of impact devices below |
Min.Radius of Workpiece (convex concave) | |
Min. Workpiece weight | |
Min. Workpiece thickness | |
Min. thickness of hardened layers | |
Measuring range | Refer to wide measuring range of TIME hardness testers and testing accuracy and repeatability" below |
Accuracy |
Standard Delivery:
Main unit
Impact device type D
Small support ring
Printing paper
Nylon brush
Leeb hardness test block
Charger
Certificate
Warranty card
Instruction manual
Certification: CE , ISO9001
Global Cooperators:
package in carton
Transportation :
Delivered by DHL,TNT,UPS,EMS,FEDEX or by AIR or by SEA
Guarantee period :1 year
1 The application of Leeb hardness tester
It can be wildly used in petroleum, mechanism, chemical engineering, metallurgy, aeration and space, pressure vessel and so on industries. It works primarily by checking the hardness to do the invalidation analysis.
The advantage of Leeb hardness tester (compared with the bench one): convenience: when the checked unit is large-sized, hard to move or need check on the spot, under this circumstances, only the Leeb hardness tester fits.
2 What methods of portable hardness testing are available, and which is most reliable?
There are several portable hardness testers available, with some more appropriate to certain situations than others. The particular hardness tester for the job would depend on what you needed to find out and why.
For example, a Barcol hardness tester for use on Al alloys is generally used as a comparative tool; to indicate a loss in strength in damaged regions of a structure compared with undamaged regions or virgin material. Barcol hardness testers are very portable, and are good for this type of comparative work, but the conversion to more widely recognised hardness scales is only approximate.
Telebrineller testers. These types of tester determine hardness by comparison of steel ball indentation in a standardised bar with indentation in the test material. The standardised bars are consumable, and should be close to the hardness of the test material. The method is relatively straightforward, but would be subject to similar limitations to the rebound testing method.
The three main principles behind many other types of portable hardness testers are:
1. Ultrasonic Contact Impedance (UCI) such as KUB100
2. Rebound methods Such as AHT120, AHT160,AHT190,AHT200
3. Rockwell principle - Such as CHR-150D CHR-150, CHR-45/150D
The principle of UCI is based on the shift in resonant ultrasonic frequency arising from the contact of a Vickers diamond indenter on the end of the probe, and the material under test. The shift in frequency arises from the additional mass on the end of the probe, upon contact with the test material. The frequency shift is proportional to the area of contact, which is the area of indentation generated by the Vickers diamond. The frequency shift also depends on the Young's Modulus of the material, and calibration on a material with a similar Young's modulus to the test material must be carried out before testing. The following equations are employed in the UCI method: