COMPANY PRODUCT

1.Hardness is one of the important mechanic characteristics of the material while the hardness testing is an important method to judge the quality of the metal material or its component parts. The hardness of the metal is correspondent to its mechanic characteristics, and so its mechanic characteristics such as the strength, tiredness, wriggling and wearing out can be tested out approximately through its hardness testing.
2.Digital multi-functional hardness tester with Brinell, Rockwell, Vickers three testing methods, multi-functional hardness tester of seven grade test force, it can meet the needs of a variety of hardness tests. Test force loading, dwell, unload adopted automatic switching mechanism, test force transformation ained by the rotation of hand wheel, indentation measured by precision encoder and sensor and calculated the hardness value by the internal system program. So it is easy to operate, fast and intuitive interface, basically, no human operation error, with its high sensitivity, stability, it is suitable for workshops and laboratories.
The main function as follows：

2.1 Brinell, Rockwell, Vickers three testing methods；
2.2 Conversion of different hardness scales
2.3 Selection of dwell time
2.4 Modifications of time and date
2.5 Output of testing results
2.6 RS232 interface for optional functions, this model can save testing results and browse testing pages.
 
Technical specifications
1. The Power Source and the Voltage:       AC220V±5%, 50-60 Hz
2. Time-delayed control:                 0-60 seconds, adjustable
3. The Distance from the Indenter Center to the Instrument Body:    165mm
4. Overall Dimension (Length×Width×Height):     551×260×800 mm
5. The Net Weight of the Tester:                    80kg (Approx)
 
Rockwell Hardness
6. Specifications of Rockwell Hardness

Testing force（N）	Initial Testing Force	98.07（10kg）		Tolerance ±2.0%
	Total testing force	588.4（60kg）		Tolerance ±1.0%
		980.7（100kg）
		1471（150kg）
Indenter	Diamond Cone Indenter
	Ф1.5875mm Ball Indenter
Scales	HRA	HRB	HRC	HRD
Max height of samples	175mm

 
 
7. The Tolerance of Rockwell Hardness Display Value

Hardness Scale	Hardness Range of  The Standard Testing Blocks	The Max. Tolerance of  Display Value	Repeatability a
HRA	（20~≤75）HRA	±2HRA	≤0.02（100－H）or  0.8 Rockwell Unit b
	（＞75~≤88）HRA	±1.5HRA
HRB	（20~≤45）HRB	±4HRB	≤0.04（130－H）or  1.2 Rockwell Unit b
	（＞45~≤80）HRB	±3HRB
	（＞80~≤100）HRB	±2HRB
HRC	（20~≤70）HRC	±1.5HRC	≤0.02（100－H）or  0.8 Rockwell Unit b
a：H is average hardness value      b：Confirm as higher value

 
 
Brinell Hardness
8. The Technical Specification of Brinell Hardness Tester

Testing force	294.2N（30kg）			Tolerance ±1.0%
	306.5N（31.25kg）
	612.9N（62.5kg）
	980.7N（100kg）
	1839N（187.5kg）
Indenter	φ2.5mm、φ5mm Ball Indenter
Scales	HBW1/30	HBW2.5/31.25	HBW2.5/62.5
	HBW5/62.5	HBW10/100	HBW2.5/187.5
Eyepiece magnification	15×
Objective	2.5×（resolution 0.5μm）、5×（resolution 0.25μm）
Max Height of Sample	For 2.5×：Max Height is 95mm For 5×：Max height is 115mm

 
 
9. The Tolerance and Repetition of Displayed Value for Brinell Hardness Tester

Hardness Block（HBW）	Tolerance（%）	Repeatability （%）
≤125	±3	3
125＜HBW≤125	±2.5	2.5
＞225	±2	2

 
Vickers Hardness
10. Technical Specifications of Vickers Hardness

Test force	294.2N（30kg）	Tolerance ±1.0%
	980.7N（100kg）
Indenter	Diamond Vickers Indenter
Scale	HV30	HV100
Eyepiece magnification	15×
Objective magnification	5×（Resolution 0.25μm）
Max. Height of Specimen	115mm

 










11. The Tolerance and Repetition of Displayed Value for Vickers Hardness Tester

Tolerance of Displayed Value			Repetition of Displayed Value
Hardness scale	Value of  Hardness Block	Tolerance of  Displayed Value	Value of  Hardness Block	Repetition of  Displayed Value
HV30 HV100	≤250HV	±3%	≤225HV	6%
	300~1000HV	±2%	＞225HV	4%