HARDNESS OF THE CLASSIFICATION AND SELECTION
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.