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Superficial Rockwell Hardness Tester TIME HRM-45

China Superficial Rockwell Hardness Tester TIME HRM-45, Find details about China Superficial Rockwell hardness Tester, Hardness Tester from Superficial Rockwell Hardness Tester TIME HRM-45

Model NO.
HRM-45
Calibrating Method
Standard Hardness Test Blocks
Rated Voltage
220V
Support Language
English
Customized
Non-Customized
Trademark
TIME
Transport Package
Wooden Case
Specification
w
Origin
China
HS Code
8090
Model NO.
HRM-45
Calibrating Method
Standard Hardness Test Blocks
Rated Voltage
220V
Support Language
English
Customized
Non-Customized
Trademark
TIME
Transport Package
Wooden Case
Specification
w
Origin
China
HS Code
8090
A Brief Introduction to the Hardness Tester
  1. The hardness is one of the important criteria of the mechanical functions of the materials, and the hardness test is the important means to judge the quality of the metallic materials or parts.
  2. The manual Superficial Rockwell hardness fester is a popularly-used hardness testing instrument to measure the Rockwell hardness of the materials. The speed of loading the test force is regulated by the buffer whereas the change of the test force is made by rotating the carriage-changing hand-wheel. The operation of the present instrument is simple, its functions are stable, and its use is, therefore, widely spread.
 
Technical Parameters of the Hardness Tester
2.1 The initial test force: 29.42N (3kg), the allowed tolerance: ±2.0%
2.2 The Total Test force: 147.1N (15kg), 294.2N (30kg), 441.3N (45kg), the allowed tolerance: ±1.0%
2.3 The specifications of the indenter:
2.3.1 Diamond Rockwell indenters
2.3.2 Ball indenters φ1.5875mm
2.4 The max height of the specimens: 175mm
2.5 The distance from the center of the indenter to the instrument body: 165mm
2.6 The total dimension of the tester (length x width x height): 525×210×730 (mm)
2.7 The total weight of the tester: 78kg.
2.8 The allowed tolerances of the indicated values of the hardness tester (Table 1)
Table 1
ScaleHardness of Standard BlocksDisplay Tolerance
15N(70~94) HR 15N±2 HRN
30N(42~86) HR 30N
45N(20~77) HR 45N
15T(67~93) HR 15T±3 HRT
30T(29~82) HR 30T
45T(10~72) HR 45T
 
The Scales, Indenters, Test Force Values and Application Fields of the Superficial Rockwell Hardness Tests. (Table 2)
Table 2
ScaleIndenter TypeInitial Test ForceTotal Test Force(N)Applications

HR15N

Diamond Indenter29.42 N
(3kg)		147.1(15)Hard alloy steel, nitride steel, carburized steel, various heavy steel plate, etc
HR30N294.2(30)Surface-quenched steel, carburized steel, knife, thin steel plate, etc

HR45N

441.3(45)Quenched steel, tempered steel, hard cast iron and edge of parts, etc
HR15TBall Indenter     φ1.5875mm(1/16 inch)147.1(15)Annealed copper alloy, brass,bronze plate,  mild steel sheet

HR30T

294.2(30)Mild steel sheet, aluminum alloy, copper alloy, brass and bronze, malleable cast iron,
HR45T441.3(45)Pearlite iron, copper -nickel alloy and zinc-nickel alloy plate
 
 

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