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Rockwell block / Brinell block Portable Hardness Tester support HRA, HRC, HRB Hardness Test Blocks
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Brand Name:HUATEC
Model Number:HRA,HBW,HV,HR,HLD,HLG
Delivery Time:1-4days
Payment Terms:T/T, Paypal, Western Union
Certification:ISO, CE, GOST
Supply Ability:500pcs per month
Company Data
Verified Supplier
Contact Person
JingAn Chen
Business Type:
Manufacturer Exporter Trading Company
Officials:
7th Floor, Chengyuan Building B, the Mid. Road of Jiancaicheng Haidian Dist.BeiJing,CHINA 100096
Quality:
Quality Certifitation Available
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Product Details
Company Profile
Product Details
Rockwell block / Brinell block Portable Hardness Tester support
HRA, HRC, HRB Hardness Test Blocks
Brinell hardness block:Range of 8 ~ 650 HBW
Brinell hardness measurement principle is to use a certain test
force F (N), the size of the diameter D (mm) of the quenching steel
or hard alloy ball pressure into the surface of the metal being
measured (figure 1), after the prescribed time unloading test
force, with a reading microscope to measure indentation average
diameter D (mm), and then, according to the formula and brinell
hardness HB value or D from has been prepared based on brinell
hardness scale found in HB values.
As the metal materials are hard and soft, the measured workpiece is
thick and thin, large and small, if only a standard test force F
and pressure head diameter D, will appear to some workpiece and
material inappropriate phenomenon. Therefore, in the production of
brinell hardness test, can use different size of test force and the
pressure head diameter, for the same kind of materials with
different F when testing and D, it can get the same brinell
hardness value, the key lies in the geometry of the indentation of
the similar, can establish and D F a matching relationship, to
ensure the invariance of brinell hardness.
Features: generally speaking, the smaller the brinell hardness, the
softer the material, the larger the indentation diameter;
Conversely, the larger the brinell hardness, the harder the
material, the smaller the indentation diameter. The advantage of
brinell hardness measurement is that it has high measurement
accuracy, large indentation area, can reflect the average hardness
of the material in a large range, the hardness measured is also
more accurate, the data repeatability is strong.
Application: brinell hardness measurement method is applicable to
cast iron, non-ferrous alloy, all kinds of annealed and tempered
steel, it is not suitable to measure too hard, too small, too thin
and the surface is not allowed to have larger indentation pattern
or workpiece.
According to the national standard (GB231-84), the ratio of 0.102f
/D commonly used in brinell hardness test is 30, 10 and 2.5.
According to the types of metal materials, hardness range and
thickness of samples, the diameter D, test force F and retention
time of test head (steel head) are selected according to the
following table (brinell hardness test specification).
Rockwell hardness test is a simple and rapid hardness test method.
Rockwell hardness test method is widely used in manufacturing and
scientific research. Rockwell hardness test is to apply the test
force (initial test force and total test force) on the surface of
the tested material with the standard pressure head twice, and then
press the pressure head into the surface of the sample under the
action of the test force. In total test force after a certain
period of time, remove the main test force, to keep the initial
test force under the condition of measuring depth, pressure to the
total test force down into the depth and in the early test force
under the difference between the pressure into the depth of the
residual pressure (the so-called depth) to characterize the level
of hardness, residual pressure into the depth, the greater the
hardness value is lower, and vice versa. The sign for rockwell
hardness is HR. In order to adapt to the application of different
materials, rockwell hardness scale (A, B, C, D, E, F, G, H, K, L,
M, P, R, S, V...
Vickers hardness measurement principle is basically the same as
brinell hardness, is also based on the indentation unit area of the
load to calculate the hardness value. The difference is that the
pressure head of vickers hardness test is the regular quadric
pyramid of diamond. During the test, under the action of a certain
load, a square cone indentation is pressed on the surface of the
sample. The diagonal length of the indentation is measured and
divided by the surface area of the indentation. The value of the
load divided by the surface area is the hardness value of the
sample, represented by the symbol HV.
Vickers hardness code: HV
Unit: kN/was
Vickers hardness - a criterion for hardness of a material. It was
first proposed by British scientist vickers. With the load of
49.03~ 980.7n, press the material surface of the square tapered
diamond press with the opposite Angle of 136°, keep the specified
time, measure the diagonal length of the indentation, and then
calculate the hardness according to the formula. It is suitable for
the hardness measurement of larger workpiece and deeper surface
layer. Vickers hardness still has a small load vickers hardness,
test load 1.961~< 49.03n, it is suitable for thinner workpiece,
tool surface or coating hardness measurement; Microvickers
hardness, test load <1.961N, suitable for the hardness
determination of metal foil, very thin surface layer.
HV- is suitable for microscopic analysis. Vickers hardness (HV) is
determined by pressing a diamond square cone press with a load of
less than 120kg and a top Angle of 136° into the material surface
and dividing the load value by the surface area of the indentation
pits.
The vickers hardness tester has a wide range of measurements, from
very soft materials (several vickers hardness units) to very hard
materials (3,000 vickers hardness units).
Shore hardness block:
TYPE D shore block:1 box of 7 pieces, each in a different color
Test range HA32 HA46 HA52 HA55 HA72 HA81 HA87
Purple coffee green orange red yellow black
Shore hardness - introduction to shore hardness
TYPE A shore block: 1 box of 3 pieces, each in a different color
Test range HD14 HD29 HD88
Orange black gray transparent
Generally, feel elasticity is relatively large or soft products,
testers can directly determine the use of shore A hardness tester
test, such as: stationery bottles, TPU TPR plastic film bags and
other products. And feel is basically not elastic or hard can be
tested with shore D hardness tester, such as: PC ABS PP and other
products. If the degree is shaw Axx, the hardness is relatively
low, if the degree is shaw Dxx, the hardness is relatively high.
Supplement:
Shaw's units are not enough:
1. The unit expression for type A is :HA
2. Type D unit expression is :HD
| Products | Specification | Measure(u. mm) |
| Rockwell block | (28-88)HRA | Φ60×10 |
| (20-65)HRC | ||
| (88-100)HRB | ||
| Rockwell Superficial block | (79-91)HR15N | Φ60×10 |
| (42-80)HR30N | ||
| (20-70)HR45N | ||
| (88-93)HR15T | ||
| (70-82)HR30T | ||
| (55-72)HE45T | ||
| Brinell block | (150-600)HBW 10/3000 | Φ90×15 |
| (150-600)HBW 5/750 | ||
| (150-600)HBW 2.5/187.5 | Φ64×12 | |
| (75-125)HBW 10/1000 | Φ90×15 | |
| (75-125)HBW 5/250 | ||
| (75-125)HBW 2.5/62.5 | Φ64×12 | |
| Hammer Brinell block | (150-500)HBW 5/750 | 12×12×150 |
| (150-500)HBW 5/3000 | 14×14×150 | |
| Vickers block | (150-750)HV5 | Φ60×10 |
| (150-750)HV10 | ||
| (150-750)HV30 | ||
| Micro vickers block | (200-300)HV0.05 | Φ25×5 |
| (200-300)HV0.1 | ||
| (400-500)HV0.1 | ||
| (400-500)HV0.2 | ||
| (700-800)HV0.2 | ||
| (700-800)HV0.5 | ||
| (700-800)HV1 | ||
| Leeb hardness block | (490-570)HLD | Φ90×55 |
| (590-670)HLD | ||
| (750-830)HLD | ||
| Leeb hardness block for device G | (460-540)HLG | Φ120×70 |
| (550-630)HLG |
Company Profile
HUATEC GROUP CORPORATION
Established in year 2000,HUATEC Group is a reliable manufacturer and supplier of testing instruments in Beijing China. HUATEC Group combines all the R/D and production advantage of all its own subsidiaries, takes advantage of its years marketing and sales experience in global market, contributes to offering most qualified competitive products and service to international markets.
HUATEC Group products are composed of all kinds of metal and non-metal testing equipments, such as portable hardness tester, micro hardness tester, shore durometer, vickers hardness tester, Rockwell hardness tester, Brinell hardness tester, portable X-ray flaw detector, mobile X-ray flaw detector, Real-time X-ray image flaw system, holiday detector, digital portable eddy current electrical conductivity meter, digital ultrasonic flaw detector, coating/painting thickness gauge, ultrasonic thickness gauge, vibration tester, surface roughness tester, profile projector, etc, and all of their accessories such as ultrasonic transducer, test block, IQI, lead screen, densimeter, film viewer etc.
HUATEC Group employees include a highly trained staff of engineers for sales and service, that are committed to offer satisfactory products and prompt service to all home and abroad customers.
HUATEC Group, based on most advanced technology in China, is an China famous industry group, focus on development & research and precision production of various testing equipment. The group has two own factories and two sister factories located in area of Beijing, Liaoning, Shandong and Guangzhou. All the products are produced following ISO9001 regulations and the products have been exported to most of world markets in passed years.
Our promise: Reliable quality, competitive price, fast delivery, satisfactory service.
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