Indlela yokukhetha impahla yokukhiqiza ama-bolts

Izakhiwo zemishini yama-bolts zithinteka yizinto zokusetshenziswa kanye nokwelashwa kokushisa. Ngokuvamile, izinto zokusetshenziswa zinomthelela omkhulu ezimpahleni zamabhawodi ngoba izakhiwo zezinto ezingavuthiwe zinquma umkhawulo ongaphezulu wokwelashwa kokushisa.. Ngokwesibonelo, izinto zokusetshenziswa ngaphandle kwe-Cr azisoze zafinyelela amandla aqinile we-a 10.9 Ibhawodi lebanga.

Ngokuvamile, lapho amakhasimende engenazo izidingo ezithile, sincoma ukunquma izinto zokusetshenziswa zokukhiqiza amabhawodi ngokusekelwe esimweni sokusetshenziswa kwekhasimende. Ngokwesibonelo, embonini yezokwakha, kunconywa ukusebenzisa amabhawudi ebangeni 8.8 noma ngaphezulu kwezakhiwo zensimbi, nasembonini yezimoto, amabhawodi ebangeni 10.9 noma ngaphezulu kunconyelwe ukuxhumana.

Lapho amakhasimende anezidingo ezithile zebanga lebhawodi, ngokuvamile sikhetha amabhawodi ngokwezinga le-ISO898 lamabhawodi wemethrikhi.

Okulandelayo yizidingo ze-bolt raw materials ku-ISO898:

Impahla ikilasi	Okubalulekile futhi ukushisa ukwelashwa	Amakhemikhali ukwakheka umkhawulo					Ukuthukuthela izinga lokushisa
		(phonsa ukuhlaziywa, %)a
		C		P	S	B^b	°C
		imiz.	ubuningi.	ubuningi.	ubuningi.	ubuningi.	imiz.
4.6^{c d}	Insimbi ye-Carbon noma i-carbon steel enezithasiselo		0,55	0,050	0,060	Akucacisiwe	—-
4.8^d		-
5.6^c		0,13	0,55	0,050	0,060
5.8^d		-	0,55	0,050	0,060
6.8^d		0,15	0,55	0,050	0,060
8.8^f	Insimbi ye-carbon enezithasiselo (isib. Boron noma Mn noma Cr) acimeze futhi athukuthele	0,15e	0,40	0,025	0,025	0,003	425
	noma
	Insimbi ye-Carbon ivaliwe futhi ithambile
	noma	0,25	0,55	0,025	0,025
	Insimbi ye-alloy ivaliwe futhi ithambile	0,20	0,55	0,025	0,025
9.8^f	Insimbi ye-carbon enezithasiselo (isib. Boron noma Mn noma Cr) acimeze futhi athukuthele	0,15e	0,40	0,025	0,025	0,003	425
	noma
	Insimbi ye-Carbon ivaliwe futhi ithambile
	noma	0,25	0,55	0,025	0,025
	Insimbi ye-alloy ivaliwe futhi ithambile	0,20	0,55	0,025	0,025
10.9^f	Insimbi ye-carbon enezithasiselo (isib. Boron noma Mn noma Cr) acimeze futhi athukuthele	0,20e	0,55	0,025	0,025	0,003	425
	noma
	Insimbi ye-Carbon ivaliwe futhi ithambile
	noma	0,25	0,55	0,025	0,025
	Insimbi ye-alloy ivaliwe futhi ithambile	0,20	0,55	0,025	0,025
12.9^{f h} ⁱ	Insimbi ye-alloy ivaliwe futhi ithambile	0,30	0,50	0,025	0,025	0,003	425
12.9^{f h i}	Insimbi ye-carbon enezithasiselo (isib. I-Boron noma i-Mn noma i-Cr noma i-Molybdenum) acimeze futhi athukuthele	0,28	0,50	0,025	0,025	0,003	380
a Uma kunengxabano, ukuhlaziywa komkhiqizo kuyasebenza.
b Okuqukethwe kwe-Boron kungafinyelela 0,005 %, inqobo nje uma i-boron engasebenzi ilawulwa ngokwengezwa kwe-titanium kanye/noma i-aluminium.
c Okwezibophelelo ezibandayo ezifojiwe zamakilasi ezakhiwo 4.6 futhi 5.6, ukwelashwa kokushisa kocingo olusetshenziselwa ukukhanga okubandayo noma obandayo obunjiwe
i-fastener ngokwayo ingadingeka ukuze kuzuzwe i-ductility edingekayo.
d Insimbi yokusika yamahhala ivunyelwe kulawa makilasi ezakhiwo anesulfure ephezulu elandelayo, phosphorus kanye nokuqukethwe komthofu:S: 0,34 %; P: 0,11 %; Pb: 0,35 %.
e Endabeni yensimbi ye-carbon boron engenalutho enokuqukethwe kwekhabhoni ngezansi 0,25 % (ukuhlaziya kwabalingisi), ubuncane be-manganese buzoba 0,6 % okwesigaba sempahla 8.8 futhi 0,7 % amakilasi impahla 9.8 futhi 10.9.
f Okwempahla yalezi zigaba zezakhiwo, kuyoba nekhono elanele lokuqina lokuqinisekisa isakhiwo esihlanganisa
cishe 90 % i-martensite enkabeni yezingxenye ezinentambo zezixhumi esimweni "sokuqina" ngaphambi kokushisa. g Le nsimbi ye-alloy kufanele iqukathe okungenani i-elementi eyodwa kwezilandelayo enanini elincane elinikeziwe: i-chromium 0,30 %, i-nickel 0,30 %, i-molybdenum 0,20 %, vanadium 0,10 %. Lapho ama-elementi ecaciswe ngezinhlanganisela ezimbili, ezintathu noma ezine futhi zinengxubevange engaphansi kwalezo ezinikezwe ngenhla, inani lomkhawulo elizosetshenziselwa ukunqunywa kwesigaba sensimbi 70 % yenani lamanani omkhawulo ngamunye ashiwo ngenhla kokubili, izingxenye ezintathu noma ezine ezithintekayo.
h Izibophelelo ezenziwe nge-phosphated raw zizokhishwa ngaphambi kokwelashwa ngokushisa; ukungabikho kongqimba olunothisiwe lwe-phosphorus kuzotholwa ngendlela yokuhlola efanele.
i Ukuqapha kuyelulekwa lapho ukusetshenziswa kwesigaba sempahla 12.9/12.9 kuyacatshangelwa. Amandla we isixhumi umkhiqizi, kufanele kucatshangelwe izimo zesevisi nezindlela zokuklinya. Izindawo ezizungezile zingabangela ukugqwala kokugqwala kwengcindezi kwezinsimbi njengoba zicutshungulwa kanye nalezo ezimboziwe.

Uma unomunye umbuzo mayelana nokukhiqizwa kwamabhawodi, pls uzizwe uxhumane nathi.

Sherry Cen

I-JMET I-CORP., I-Jiangsu Sainty International Group

Ikheli: Isakhiwo D, 21, I-Software Avenue, Jiangsu, China

Ucingo. 0086-25-52876434

WhatsApp:+86 17768118580

I-imeyili [email protected]