Uburyo bwo guhitamo icyuma gipima ubukana bwo gupima ingero z'imiterere y'imiyoboro

1) Ese Rockwell ishobora gupima ubukana bw'urukuta rw'umuyoboro w'icyuma ishobora gukoreshwa mu gupima ubukana bw'urukuta rw'umuyoboro w'icyuma?

Ibikoresho byo gupima ni umuyoboro w'icyuma wa SA-213M T22 ufite umurambararo wo hanze wa mm 16 n'ubugari bw'urukuta bwa mm 1.65. Ibisubizo by'ikizamini cya Rockwell hard tester ni ibi bikurikira: Nyuma yo gukuraho okiside n'urwego rwakuweho karuboni ku buso bw'ingero hakoreshejwe icyuma gisya, sampuli yashyizwe ku meza y'akazi ifite ishusho ya V maze ikizamini cya Rockwell hard tester cyakorewe ku buso bwayo bwo hanze, hakoreshejwe icyuma gipima ubukana cya HRS-150S Rockwell hard tester ku mutwaro: 980.7N.

Nyuma y'ikizamini, bigaragara ko umuyoboro w'icyuma uri ku rukuta ufite ikibazo gito, kandi igisubizo ni uko agaciro gato kapimwe k'ubukana bwa Rockwell gatuma ikizamini kitagira agaciro.

Dukurikije GB/T 230.1-2018 « Ikizamini cyo gukomera kwa Rockwell ku bikoresho by'icyuma Igice cya 1: Uburyo bwo gupima », ubukana bwa Rockwell ni 80HRBW kandi ubunini buke bw'icyitegererezo ni 1.5mm. Ubunini bw'icyitegererezo No.1 ni 1.65mm, ubunini bw'urwego rwakuweho karubone ni 0.15~0.20mm, kandi ubunini bw'icyitegererezo nyuma yo gukuraho urwego rwakuweho karubone ni 1.4~1.45mm, ari na byo biri hafi y'ubunini buke bw'icyitegererezo cyavuzwe muri GB/T 230.1-2018.

Mu gihe cy'ikizamini, bitewe n'uko ikigo cy'ikizamini kidashyigikiwe, bizatera imihindagurikire yoroheje (ishobora kutagaragara ku maso), bityo agaciro kapimwe k'ubukana bwa Rockwell kaba gake cyane.

2) Uburyo bwo guhitamo ikintu cyo hejuruRockwellipima ubukana bw'imiyoboro y'icyuma:

Isosiyete yacu yagiye igerageza ubukana bw'ubuso bw'umuyoboro w'icyuma kandi igera ku myanzuro ikurikira.:

Ikizamini cyo gukomera cya Rockwell cyo hejuru cyangwa ikizamini cyo gukomera cya Rockwell ku buso bw'umuyoboro w'icyuma ufite inkuta nto. Inkunga idahagije ku rukuta itera imihindagurikire y'ibipimo kandi igatanga ibisubizo bike by'ikizamini;

Iyo ushyize inkingi y'icyuma hagati y'umuyoboro w'icyuma wo ku rukuta rugufi, kuko idashobora kwemeza ko umurongo w'imbere n'icyerekezo cy'umutwaro w'umuzigo n'ubuso bw'umuyoboro w'icyuma bigororotse ku buso, n'ubuso bw'inyuma bw'umuyoboro w'icyuma na byo bizatera icyuho cy'inkingi y'icyuma y'icyuho kiri hagati y'ubuso bw'uruziga rw'umuyoboro w'icyuma n'ubuso bw'inkingi y'icyuma, nabyo bizatuma ibisubizo by'ikizamini biba bike cyane.

Guhindura ikizamini cy'ubukana bwa Vickers kikajya kuri Rockwell nyuma yo gusiga irangi ry'umuyoboro w'icyuma, bizahabwa agaciro k'ubukana bwa Rockwell gakwiye.

2. Nyuma yo gukuraho urwego rwa okiside na decarburization ku buso bw'umuyoboro w'icyuma no gutunganya urwego rw'igerageza ku buso bwo hanze no kurushyiramo, Agaciro kaba gafite ishingiro ugereranije na Superficial Rockwell hardness tester hamwe na Rockwell hardness tester.