HARDNESS TESTER

HARDNESS TESTER

Manual Rockwell hardness tester

Manual Rockwell hardness tester apply to test the hardness of metal materials. It has stable and reliable performance , it is economical Rockwell machine without electric power supply.

 

Main function and features:

1. The dial will display hardness value directly, indicator responses sensitively, show the hardness value accurately, the test value is more accurate than national standard;

2. One-time casted molding shell, stable structure and it is not easy to be out of shape. It can work under harsh environment; the shell coating adopted car paint technology with white color. it has strong scratch resistance capability and still look bright as new after use many years;

3. Factory directly supply, we have products develop &design & produce ability, all the parts provide life-time replacement and maintenance service;

 

Working principle of Rockwell hardness test:

The Rockwell scale is a hardness scale based on indentation hardness of a material. The Rockwell test determines the hardness by measuring the depth of penetration of an indenter under a large load compared to the penetration made by a preload. There are different scales, denoted by a single letter, that use different loads or indenters. The result is a dimensionless number noted as HRA, where A is the scale letter.

 

 

Main application

Hardened steel, quenched and tempered steel, annealing steel, bearing steel, strip steel, hardened steel sheet, hard alloy, etc.;

 

Technical parameters

Model

HR-150A

Rockwell scale

HRA,HRB,HRC,HRD,HRE,HRF,HRG,HRH, HRK,HRL,HRM,HRR

Conversion scale

Conversion table

Preliminary test force

10Kg(98N)

Total test force

60Kg (588N), 100Kg (980N), 150Kg (1471N)

Tolerance range:±1.0%

Resolution

0.5HR

Hardness value range

HRA:2088  HRB:20100  HRC:2070 

Hardness data read

Dial

Loading method

Manual

Dwell time

Manual

Allowed specimen measurement space

Maximum height :155mm

Maximum throat depth:130mm

Size / weight

Instrument size:455*175*610mmL×W×H/Net Weight: 65kg

Executive standard

GB/T230.2 , ASTM E18 , ISO 6508 , JJG112

Standard accessories

Rockwell hardness tester host: 1 set

Diamond Rockwell indenter:1 pc

1.588mm diameter hard alloy steel ball indenter :1 pc,

Standard hardness block: 4 pcs

Large testing table: 1 pc

Medium testing table: 1pc

V-shape testing table: 1pc

1.588 mm diameter steel ball :5 pcs

Dust-proof cover: 1 pc,   Accessory case :1 pc

Operating instruction :1pc   Quality certificate :1 pc

Hardness conversion table:1pc   Warranty card :1 pc.

Optional accessories

Block, Indenter

 

Hardness scale, force, Indenter relation:

 

Scale

Indenter

Preliminary test force (N)

Total test force (N)

Applications

A

Diamond indenter

coning angle 120°0.2mm radius  of top sphere  

 

 

 

 

 

98

588

Horniness alloy, cementite steel

D

980

Thin steel, quenched case

C

1471

Quenched steel, thermal refined steel, cast steel

F

Diameter of steel ball

1.588mm

(1/16 inch

588

Anneal copper alloy, thin soft steel

B

980

Soft steel, aluminum alloy, copper alloy, casting

G

1471

Pearliest iron, copper, nickel, zinc, nickel alloy

H

Diameter of steel ball

3.175mm

(1/8 inch

588


E

980


K

1471




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