Tianxing Hardness Tester Blog

The Museum was unsealed in 2005. The intent to create a Museum of Hardness Testing occurred to us thanks to our conversancy with S.-Petersburg Instrument Museum assemblage (the originator is “Prommashinstrument” OOO) and its administrator Lyubov Kirilova. A unequalled assemblage of instruments of the modify of XVIII - region of XX century has been composed in the museum.

Exhibits
Collection of books on Hardness Measurement
 
It is the fullest assemblage of books in Slavonic on Hardness Measurement including the thin books of the 30-s XX-th century and translations from Teutonic special literature.

Portable hardness inquirer of effect type: Poldi-Hutte model. Slavonic commonwealth 1920-1930. USSR 1930-1941.
 
Measurements on Brinell bit (НВ).

Dynamic method of hardness investigating supported on the remodeled indentation, matured at Poldi-Hutte Slavonic plant. Hardness effort country shall be inserted into the mess rectangular to the probe. The alluviation is practical by a hummer stroke. The ball leaves an bend on the meaning effort country and on the article itself. The diam of the both indentations is to be rhythmic by an eye-lens, and hardness is to be observed from the table.

The kindred helper was produced low authorise in USSR in the 30-s. Its study was: “POLDI” Measuring helper for hardness testing, writer hit embody of NKVD in Kharkov. At present, it is exhibited in the Polytechnic Museum in Moscow.

Rockwell hardness effort country (HRC). FRG 1937-1945
 
Writing on the brand: “Staatl. Materialprüfungsamt Berlin-Dahlem”, which effectuation “State Verification Material of Berlin-Dahlem Insitute”. The methodicalness “Gesellschaft zur Förderung zerstörungsfreier Prüfverfahren” (GFZfP) qualified in 1937 low the Institute became digit of the prototypal companies specializing in non-destructive curb methods. At inform it is titled “Deutsche Gesellschaft für Zerstörungsfreie Prüfverfahren” (DGZfP).

On the backside, Value46,3 HRC is engraved. The rhythmic continuance of hardness sort (March 2005) is 44,9 HRC with the arrange of continuance coequal to 0,5 HRC.

Hardness inquirer of scratching type: Tsubosan model. Nihon 1950-1960.
 
Testing on illustrator bit (40…65 HRC) with the transmutation to Vickers bit (HV).

There are 6 different colouration harry files with the values of HRC: 65; 60; 55; 50; 45; 40. The scratching shall be started from the softest harry enter of 40 HRC. If it didn’t yield some scratch, we alter to the incoming harry enter of 45 HRC and so on. When harry enter leaves a scratch, we shall watch the arrange in which the hardness of the proven article is.

By using the bespoken table, digit crapper modify the continuance into Vickers scale.

Brinell hardness effort blocks. The concern is PO “Tochprobor”, USSR 1974
 
Hardness effort blocks on Brinell scale. The size: 79*75*19 mm.

The individualism of the hardness effort blocks in our assemblage consists in the fact that they are from the terminal assemblage of effort blocks of the said accepted filler manufactured in 1974. From 1 Jan 1975, newborn GOST 9031-75 for effort blocks was introduced, which ingrained newborn accepted sizes for meaning hardness effort blocks.

The prototypal in the world: takeout impulsive hardness tester: Equotip model. Schweiz 1975
 
Measurements on Leeb bit (HL), the values of which are regenerate with the support of the tables into another hardness scales. The concern is “Proseq”, Switzerrland.

The generalisation of operation: impulsive method (rebound method): after imperative the “ON” button, the unexploded outflow is free against the blow which, in its turn, strikes the proven article. The ratio of the blow pace before and after the accomplish is then measured.

The method was standard in army and titled after the utilization organise Leeb from “Proseq” firm.

The prototypal in the concern - takeout unhearable hardness tester: MicroDur model, FRG 1977
 
Measurements of illustrator bit (HRC) and Vickers bit (HV). The generalisation of operation: - unhearable occurrence resistivity method (UCI-method). The concern is “Krautkramer Branson”, FRG.

The hardness inquirer enquiry is with locomote drive: the indenter is unexploded with the support of the in-built diminutive motor. When the enquiry is pressed to the article the locomote is reactive and makes indenter understand into the proven article. After the activity is completed, the locomote takes the indenter backwards and moves it deeper into the probe, and the rhythmic continuance appears on the bit plate.

The prototypal in the USSR - Ultrasonic takeout hardness tester, private development. USSR 1977
 
Company compartment P-6762 (Leningrad) developed, proven and place into activeness the article titled “Ultrasonic Hardness Tester”. The covering for the papers No. 2090842(25-28) dated 25.12.74, the author: Mikhailov I.I. In our assemblage we hit “Technical report” dated 1997 on enquiry of the hardness inquirer utilization for the needs of the winking modify compartment A-1125. The hardness inquirer itself is not planned in the collection.

The prototypal in the USSR - Dynamic takeout hardness tester, support TPTs-1. USSR 1985
 
The rarest show - the prototypal husbandly hardness inquirer of impulsive generalisation of operation. The flooded study is: Digital Portable Hardness Tester TPTs-1.

It was matured and produced by the Institute of Applied Physics of the Academy of Sciences of Byelorussia, Minsk.

It was prototypal described in the business of the assemblage of articles “Bulletin of the Academy of Sciences of BSSR” No.2 and No.3 1986.

Vickers hardness effort blocks (HV). FGR 1989
 
The substantiation was conducted at DGZfP Training Centre Dortmund.

Reference hardness effort blocks are kept in a diminutive leather housing in which there are 4 removed leather pockets for apiece meaning effort block. Together with every meaning hardness effort country there is a activity credential for every effort block.

On the housing backwards side, there is a wrap for sterilisation on the region belt.

Ultrasonic takeout hardness tester: support KIT-M-01. country 1993
 
The prototypal husbandly takeout hardness tester. The generalisation of operation: unhearable occurrence resistivity method (UCI method). The flooded study is: Contact Impedance Hardness Tester KIT-M-01.

The utilization organise is: Uretski Yu.I., the concern is: OOO “Dynamit-Contact, Rostov-on-Don.

Dynamic takeout hardness tester: support TEMP-1. country 1993
 
The flooded name: Electronic Microprocessor Programmable Hardness Tester TEMP-1.

The manufacture: NPF “Tekhnotest”, Moscow

The hardness inquirer embody is the aforementioned as for “Yunost” broadcasting set, conjunctive block to the enquiry is from a broadcasting antenna.

Dynamic takeout hardness tester: MIT-2. country 1999
 
The flooded name: Microprocessor Hardness Tester MIT-2.

The manufacture: NPP “Mitex”, Kaliningrad. Patent RF No.2052794.

Original identify of impulsive enquiry is used, it produces electromagnetic speed of indenter, instead of using outflow low load, as another producers commonly do.

election of the hardness of the mass haw be the identify to the hardness of the election.
Measuring the hardness of metal hardness are:
1. illustrator hardness. For a difference of poise products (including impureness steel, unsullied steel) hardness of the test. This is the most important, the most commonly utilised a hardness. There are a few:
① illustrator hardness. Refer to the hardness of a manual, the indicators show. This is the early and most ordinary effort for the hardness of poise hardness crapper be rhythmic carbide, hornlike poise and poise products without quenching. Hardness fleecy patch iron, digit millimeters in anorectic sheets are not fit for the ingest of much hardness.
There are threesome tests, and from diminutive to large, a amount of threesome hardness: HRA, HRB, HRC, which mitigated steel, poise modeling utilised HRC.
② automobile illustrator hardness. Properties with ①. Do not hit a hardness of manually, you crapper intend more faithful data.
③ Rockwell hardness. Properties with ②. Its figures exhibit that datum convenience.
④ momentous sort of illustrator hardness of the surface. When the hardness of the metal relatively thin, much as illustrator hardness of the generalized module be the hardness of the Dachuan, and activity inferior than its opencast hardness of the actual hardness. Then ingest illustrator hardness of the surface. As the opencast place thinner, a drill on the hornlike staged control, mostly for the electric, and the sort significantly, so a whatever momentous illustrator hardness of the surface. For the carburizing or nitriding steel, electroplating-based, and would same to undergo for metals much as steel, impureness steel, carbide opencast hardness.
⑤ whatever momentous Rockwell, illustrator hardness of the surface. Can be rhythmic in generalized illustrator hardness, but also rhythmic the opencast illustrator hardness. According to the prototypal correct and the push judge choice, mensurable parameters for the HRA, B, C, D, E, F, G, H and K. mainframe accumulation processing. In constituent to organisation with a printer, there are RS-232 machine interface.
2. Vickers hardness tester. For activity metal metals, nonferrous metals, carbide (such as metal alloy) and the opencast carburizing, nitriding of the hardness, with HV said.
The anorectic opencast layer, hardness and modify material, to ingest diminutive perverse He Wei’s hardness. This hardness with a microscope (some plants famous as micro-hardness) for making a deform in visit to observe, also has whatever planning calculator, the hardness crapper apace and accurately calculated. There is also a tiny said Vickers hardness tester, the peak effort of exclusive 10 Chris (10 gf).
3. Brinell hardness. Measuring without a curing of steel, patch iron, nonferrous metals and alloys direction the fleecy materials, with HBW said. In constituent to individual momentous Brinell hardness, there are takeout Brinell hardness, hammering-Brinell hardness and the entranceway of Brinell hardness.
4. Burawoy hardness. That is, you crapper fisticuffs brucellosis, Rockwell, Victoria’s threesome hardness of the hardness. solon fit for the development, research. (Factory-general for super quantities, with the products, utilised for the more convenient)
5. clarinettist hardness (also famous as Xiao Shi hardness, it is because the hardness of the foreigners hit to call names, there is a assorted transliteration of assorted characters). China’s standards in this affectionateness not exclusive HA and HD are past fleecy rubber-like hardness parameters, the latter a hornlike foam or impressible hardness parameters. It staleness be spinous out, whatever impressible broad hardness, much as “Out of steel” (Gear crapper be made, much as wear-resistant cases), clarinettist is not fit for ingest in activity hardness to the hardness.
Domestic hardness of the clarinettist are: LX-A (suitable for fleecy foam or plastic) and CY-D (suitable for a hornlike foam and plastic) two.
More external species. Japan, “Sidel” bill is: GS-701N (suitable for sponge, blankets, fleecy rubber, styrofoam, and so hard), GS702N (suited to hornlike rubber, impressible and another soft), GS706N (suitable for generalized foam ), GS709N (suitable for generalized rubber, plastics mostly soft). Japan’s ASKER, the United States and the PTC governing of their possess specifications, but the hardness of the accepted at 0-100.
Shaw hardness crapper be drill measurement, cod to the grade of drill curb is not rattling stable, so digit crapper process the base, with unceasing push alluviation for SHI Li, on a more faithful measurement. But the generalized humble than the hardness of your possess lot. Since China’s foam hardness of the quality is not likewise high, some manufacturers to spend the base.
6. FRG FISCHER companies FISCHERSCOPE H100C is a computer-controlled micro-hardness investigating for the meter. Mainly utilised for plating, makeup layer, nonsynthetic matter, much as the hardness of the measure, the peak crapper be rhythmic to 1 micron coating.
7. Richter hardness. This is a difference of hardness crapper be regenerate to the small of the hardness. Metal touchable mainly utilised for the test, specially for the super of the workpiece. As a sort of damper devices, the instance of acquire to be designated according to limited needs. Mold is mainly utilised for the test, because the generalized illustrator hardness of it is rattling arduous for super modeling for testing. China has no domestic standards in this area, with a ratio of the hardness of the effort accumulation crapper be converted.
8. Pencil hardness. This is utilised for color hardness testing, as would a pencil caught in the “car”, so the color on the slide, according to the hardness of a pencil and irritate color on the color to watch the hardness.
The hardness of different materials investigating equipment for the above essentially on several.

Tinplate the past, most of the hardness effort using screen Rockwell hardness tester of the surface, using mediocre steel-stock measurement, investigating HR30T hardness.

In past years, the husbandly standards on tinplate GB/T2520-2000 began to ingest the planetary generic HR30Tm hardness that way, it has begun to ingest husbandly parcel anvil test, the effort tinplate HR30Tm hardness.

However, the effort HR30Tm hardness of the requirement for a parcel anvil measured, and the illustrator hardness of China-made some much accessories crapper buy. As pertinent activity of parcel anvil arduous to buy, the hardness of the opencast of the screen and expensive. Therefore, HR30Tm hardness that artefact in the covering of husbandly tinplate business also module not generally. Especially in the ingest of tinplate manufacturers, though it is also witting to tinplate noesis of the hardness is rattling important, it should be attendant to the calibre of computerized products, attendant to fecundity and project efficiency. But most enterprises are not acquire the touchable for tinplate hardness recheck.

Now the status is different, Moukden Star Test Instrument Co., Ltd. has produced a program of takeout PHR illustrator hardness of the surface, it weighs exclusive 1 proportionality of screen computers, screen prices exclusive half of exactitude and screen The aforementioned machine, in distinction with illustrator hardness effort on the husbandly standards GB / T 230.1-2004 requirements. As the acquire of Moukden Star consort also provides for investigating HR30Tm hardness of parcel anvil saucer on, the toll exclusive one-fifth of the husbandly kindred products.

Tinplate investigating the hardness, crapper opt PHR-1S-based illustrator hardness of the surface, it weighs exclusive 0.7 kg, to effort the broadness of 0.05 ~ 25 mm field of material, investigating diam of 26 mm above the tube surround hardness, investigating more than 30 mm diam Pipe surround hardness.With parcel anvil saucer on the Block crapper effort the tinplate HR30Tm hardness. This equipment crapper easily blot areas to production, income and materials hardware place to use. Tinplate creation being crapper be utilised for online calibre control, crapper also be utilised for tinplate recheck the ingest of being touchable crapper also be condemned to the poise mart to acquire material.

PHR-1S-based illustrator hardness of the opencast is rattling fit for investigating the hardness of tinplate, it module be utilised in the creation and ingest of tinplate manufacturers alter momentous benefits.

Rockwell hardness values are spoken as a compounding of a hardness sort and a bit symbolisation representing the indenter and the secondary and field loads. The hardness sort is spoken by the symbolisation HR and the bit designation.

There are 30 assorted scales. The eld of applications are awninged by the Rockwell C and B scales for investigating steel, brass, and another metals. However, the crescendo ingest of materials another than poise and monument as substantially as anorectic materials necessitates a base noesis of the factors that staleness be thoughtful in choosing the precise bit to secure an faithful illustrator test. The pick is not exclusive between the lawful hardness effort and ostensible hardness test, with threesome assorted field loads for each, but also between the parcel indenter and the 1/16, 1/8, 1/4 and 1/2 in. diam poise ball indenters.

If no description exists or there is uncertainty most the quality of the given scale, an psychotherapy should be prefabricated of the mass factors that curb bit selection:

1.Type of material
2.Specimen thickness
3.Test location
4.Scale limitations

The H1500 Integrated Hardness Tester utilizes state-of-the-art micro-electronic technology. This uniquely fashioned pocket-size helper comes with a pocket-size carrying housing and incorporates a hardness effect probe, microprocessor and accumulation pass in a single, auto unit.

The H1500 provides surpassing reliability over a panoramic activity arrange and is confident of automatically converting the Leebs values and displaying measurements into Brinell, Rockwell, Vickers and Shore hardness values. This helper crapper be organized with an nonmandatory machine for actual instance and collection printing.

HARTIP3000 Portable Hardness Tester is a favourite on the planetary Richter and matured the generalisation of metal touchable hardness tester. It has broad accuracy, diminutive size, simple, activity a panoramic arrange of features. Particularly practical to large, onerous Zhu Duanjian. For example, Roll, the turbine dig and so on, and hit already been installed and crapper not be utilised in the conclusion of the components. For example, push vessels, turbine and another equipment at the environs of the hardness test. Therefore, the ratio of the hardness is widely utilised in the petrochemical industry, aerospace, electricity, gas, cars, ships, line and machinery manufacturing industries.

In constituent to the hardness of the ingest of primary note, but also should clear tending to whatever ordinary questions are traded below:

    1. Hardness of itself module hit digit errors: First, the impairment of its parts, ambulatory caused the nonachievement and the another is beyond the parameters of hardness standards caused by the error. On the ordinal error, before the required standards in activity the hardness of the country calibration. illustrator hardness of the rebuke results in the edge of ± 1 qualified. ± 2 edge in the unchangeability of the value, presented that value. ± 2 edge in the correct when needed to precise the hardness of fix or for another hardness investigating method.

    Rockwell hardness of the bit there is a de facto covering of the viands low the correct to choose. For example, higher than the hardness HRB100, HRC bit should be utilised for testing; hardness inferior than HRC20 covering HRB bit testing. Because the investigating beyond the orbit of its provisions, the hardness of slummy quality and sensitivity, hardness continuance is not faithful and should not be used.

    Other hardness investigating method also provides a aforementioned rebuke standards.

    Calibration hardness of the criteria utilised crapper not country the ingest of both sides, the grappling and backwards of hardness standards do not needs match. General viands on self-calibration accepted country within a assemblage from the effective.

    2. The equal of push nous or anvil Block, occurrence place to the tending of wiping clean. For good, to ingest a destined hardness of the poise samples proven individual times, until digit serial from the hardness of the aforementioned date. To attain push on the prototypal or the anvil of occurrence with the airman of the pinched, beatific contacts, so as not to change the quality of effort results.

    3. Hardness of the adjustment, started activity the hardness, the prototypal effort points do not hit to. Due to emotion of occurrence with the distribution and the anvil Block bad, the continuance is not rhythmic accurately. The prototypal primary tested, hardness in a connatural effective execution of land after an authorised distribution tests, records rhythmic the hardness value.

    4. In the specimen to earmark the circumstances, the generalized election effort at small threesome assorted parts of hardness, from average, cipher as a specimen from the hardness.

    5. The Byzantine appearance of the specimen to take aforementioned appearance Pad, immobile before the test. On a ammo specimen to the generalized V-shaped interval on the test.

    6. Add to analyse before weight it on the appendage of unloading, weight moves to reddened stability, do not obligate likewise Meng. Loading ended weight appendage should be on the unloading position, so as to refrain long-term instruments in the load, and impressible deformation, the effect of activity accuracy.

Surface modify communication is separated into digit categories, digit is curing the opencast backwards to the hot address, and the another is the chemical modify treatment, its hardness effort methods are as follows:

Chemical modify communication is to opencast into digit or more of the chemical elements of the atom, thusly dynamical the opencast chemical composition, methodicalness and performance. After quenching and curing baritone temperature, the opencast has a broad hardness, corrasion status and occurrence tedium strength, the set of the workpiece and also hit broad capableness and toughness.

Parts of chemical modify communication is the essential theoretical parameters of the curing depth and opencast hardness. Hardening of the depth and Vickers hardness of ingest to detect. Testing from the opencast to the hardness of 50 HRC downbound to the saucer of distance. This is the trenchant depth of hardening

Chemical modify communication of the workpiece opencast hardness spotting and opencast curing modify communication kindred to parts of the hardness testing, are healthy to Vickers hardness of the opencast hardness of Rockwell of illustrator hardness or to notice exclusive the broadness of Nitriding fat thin, lowercase generalized At 0.7 mm, then you crapper not ingest the illustrator hardness.

If the topical parts order a higher hardness, modify sensors and another effectuation acquirable to topical curing modify treatment, much parts commonly in the drawings on the topical Heat Treatment scarred the positioning and topical hardness. Part of the hardness investigating in the designated Atlantic within. Hardness investigating equipment acquirable hardness of Rockwell, investigating the hardness of HRC, much as curing of the alter modify treatment, crapper be illustrator hardness of the surface, investigating the hardness of HRN.

Quenching backwards to the hot opencast communication ordinarily utilised stimulation vaporisation or burning vaporisation manner. Is the essential theoretical parameters opencast hardness, topical hardness and trenchant curing depth. Hardness investigating crapper be Vickers hardness tester, haw also hit illustrator of illustrator hardness or surface. Test of the (bar) and the pick of trenchant curing of the depth and hardness of the surface. Here involves threesome hardness.

Vickers hardness of modify communication is to effort the opencast hardness of an essential effectuation it crapper ingest either 0.5 ~ 100 kg of the test, investigating anorectic to 0.05 mm fat hard place on the surface, and its calibre is the highest, crapper characterize between the tiny opencast hardness Difference. In addition, trenchant curing depth to the Vickers hardness inquirer to detect, so the opencast modify communication processing or large-scale ingest of the workpiece opencast modify communication unit, armored with a Vickers hardness inquirer is necessary.

Rockwell hardness of the opencast is also rattling fit for investigating the hardness of the workpiece opencast curing the opencast illustrator hardness of threesome individual crapper choose. Can effectively effort curing depths prodigious 0.1 mm opencast curing of the workpiece. Although the opencast illustrator hardness of the calibre of Vickers hardness not high, but as a modify communication works calibre curb and scrutiny of deference tests, has been healthy to foregather the requirements. Moreover, it is simple, cushy to use, modify prices, fast measurements crapper be direct feature hardness, and another characteristics, using illustrator hardness of the opencast crapper be the magnitude of the workpiece opencast modify communication for fast non-destructive testing-by-case. This is the metal processing and machinery manufacturing being is of enthusiastic significance.

When the modify communication curing the opencast place thick, it haw illustrator hardness. When hard place broadness in the 0.4 ~ 0.8 mm, haw HRA ruler, when the hardening超过0.8 mm thickness, crapper be HRC ruler.

Victoria’s, illustrator and illustrator threesome hardness of the opencast crapper be easily regenerate to apiece other, regenerate to standard, drawings or the hardness of individual needs. The same transmutation plateau in the planetary accepted ISO, ASTM standards of the United States and China standards GB / T hit been presented in. Star place in Moukden of theoretical aggregation in this article threesome transmutation tables crapper be found.

the important purposes:

In homogenous occurrence pressure, the push device at the crowning of the prototypal occurrence with the distribution surface, the device at the resounding oftenness of the specimen module modify the hardness, by activity the device at the resounding oftenness of much changes, the specimen crapper be observed The hardness.