China DIN7991 Hex Socket Countersunk Screw IBanga leCarbon Steel Zinc ePlated iBanga 8.8 10.9 abavelisi kunye nababoneleli |Hongji

DIN7991 Hex Socket Countersunk Screw IBanga leCarbon Steel Zinc ePlated Grade 8.8 10.9

Inkcazelo emfutshane:

Umgangatho: DIN7991

Igama leMveliso: I-Hex Socket Flat Head Screw

Amagama aPhambili: DIN7991, Hex socket flat head screw, Countersunk Screw

Ubungakanani: M3-M42

Izinto eziphathekayo: 10B21, 35CrMo, 40Cr

IBanga lokuqina: 8.8, 10.9

Unyango loMphezulu: I-Zinc emhlophe ePlated

Ubude boMsonto: Umsonto opheleleyo/ Umsonto osiqingatha

Ukupakisha: Ibhegi/Ibhokisi/Ityala leMithi

Ezinye iimpawu: Nikela ngophawu lwentloko olulungiselelweyo

Thumela i-imeyile kuthi

Iinkcukacha zeMveliso

Iithegi zeMveliso

Inkcazo

KHAWULEZAImpendulo

KHAWULEZAUcaphulo

KHAWULEZAUkuhanjiswa

ILUNGELE UKUTHUMELA NGENQANABA

10000+ SKU kwindawo yokugcina impahla

Sizibophelela kwizinto ze-RTS:

70% izinto ezizisiweyo phakathi kweentsuku ezi-5

80% izinto ezizisiweyo phakathi kweentsuku ezisi-7

90% izinto ezizisiweyophakathi kweentsuku ezili-10

Iiodolo ezininzi, nceda uqhagamshelane nenkonzo yabathengi

d		M3	M4	M5	M6	M8	M10	M12	(M14)	M16	(M18)	M20	(M22)	M24
d
P	I-pitch	0.5	0.7	0.8	1	1.25	1.5	1.75	2	2	2.5	2.5	2.5	3
α	intlawulo.(+2)	90°	90°	90°	90°	90°	90°	90°	90°	90°	90°	90°	60°	60°
b	L≤125mm	12	14	16	18	22	26	30	34	38	42	46	50	54
	125＜L ≤ 200	/	/	/	24	28	32	36	40	44	48	52	56	60
	L＞200	/	/	/	/	/	45	49	53	57	61	65	69	73
dk	Ubukhulu=Esibizo	6	8	10	12	16	20	24	27	30	33	36	36	39
dk	Min	5.7	7.64	9.64	11.57	15.57	19.48	23.48	26.48	29.48	32.38	35.38	35.38	38.38
ds	Ubukhulu=Esibizo	3	4	5	6	8	10	12	14	16	18	20	22	24
ds	Min	2.86	3.82	4.82	5.82	7.78	9.78	11.73	13.73	15.73	17.73	19.67	21.67	23.67
e	Min	2.3	2.87	3.44	4.58	5.72	6.86	9.15	11.43	11.43	13.72	13.72	16	16
k	Max	1.7	2.3	2.8	3.3	4.4	5.5	6.5	7	7.5	8	8.5	13.1	14
s	Ngobizo	2	2.5	3	4	5	6	8	10	10	12	12	14	14
	Min	2.02	2.52	3.02	4.02	5.02	6.02	8.025	10.025	10.025	12.032	12.032	14.032	14.032
	Max	2.1	2.6	3.1	4.12	5.14	6.14	8.175	10.175	10.175	12.212	12.212	14.212	14.212
t	Ubukhulu=Esibizo	1.2	1.8	2.3	2.5	3.5	4.4	4.6	4.8	5.3	5.5	5.9	8.8	10.3
t	Min	0.95	1.55	2.05	2.25	3.2	4.1	4.3	4.5	5	5.2	5.6	8.44	9.87

Inkcazo yeenkcukacha

Izibophelelo zokuqina eziphezulu ziya kuvelisa ukuqaqamba xa zifakwe igalvanized.Kufuneka ingqalelo ekhethekileyo.

I-Hydrogen embrittlement idla ngokubonakaliswa ngokulibaziseka ukuphuka phantsi koxinzelelo.Kubekho imithombo yemoto, iiwasha, izikrufu, izithonga zamashiti kunye nezinye iindawo ezifakwe amazimba, kwiiyure ezimbalwa emva kokuba indibano yaphukile, umlinganiselo wokwaphuka wama-40% ~ 50%.Kwinkqubo yokusebenzisa iinxalenye ze-cadmium-plated zemveliso ekhethekileyo, kwakukho i-batch crack fracture, kwaye ingxaki engundoqo yelizwe yasonjululwa kwaye inkqubo engqongqo ye-dehydrogenation yenziwe.Ukongeza, kukho ezinye i-hydrogen embrittlement ayibonisi isenzeko sokulibaziseka kokwaphuka, okufana: i-electroplating hanger (intambo yentsimbi, ucingo lobhedu) ngenxa yamaxesha amaninzi e-electroplating kunye ne-pickling plating, ukungena kwe-hydrogen kubi kakhulu, kaninzi kubonakala xa kusetyenziswa isibaya. kwenzeke into eyenzeka ngokuqhekeka;I-mandrel yompu, emva kwamaxesha amaninzi e-chroming, yawa phantsi yaza yaphuka;Ezinye iindawo ezicinyiweyo (uxinzelelo olukhulu lwangaphakathi) ziya kuqhekeka xa zikhetha.Ezi nxalenye zine-hydrogenated kakhulu kwaye ziqhekeka ngaphandle koxinzelelo lwangaphandle, olungasayi kuphinda lusetyenziswe ukubuyisela ubunzima bokuqala nge-dehydrogenation.

Ukuphakama kwamandla ezinto eziphathekayo, lukhulu uvakalelo lwe-hydrogen embrittlement.Le ngcamango esisiseko ekufuneka icaciswe ngabachwephesha bonyango lomphezulu xa bequlunqa iinkcukacha zenkqubo ye-electroplating.Iintsimbi ezinamandla okuqina σb>105kg/mm2 ezifunwa yimigangatho yamazwe ngamazwe kufuneka zibe phantsi koxinzelelo lwangaphambili kunye nonyango lwe-post-plating dehydrogenation ngokufanelekileyo.Ishishini lenqwelomoya laseFransi lifuna unyango oluhambelanayo lwe-dehydrogenation kumalungu entsimbi anamandla esivuno σs>90kg/mm2.

Ngenxa yembalelwano elungileyo phakathi kokuqina kwentsimbi kunye nokuqina, kuyaqondakala kwaye kulula ukugweba uvakalelo lwe-hydrogen embrittlement yezinto ngobulukhuni kunokuba ngamandla.Ngenxa yokuba umzobo ogqibeleleyo wemveliso kunye nenkqubo yomatshini kufuneka imakwe ngobulukhuni bentsimbi.Kwi-electroplating, safumanisa ukuba ukuqina kwentsimbi ejikeleze i-HRC38 yaqala ukubonisa umngcipheko wokuqhekeka kwe-hydrogen embrittlement.Kwiindawo ezingaphezulu kune-HRC43, i-dehydrogenation kufuneka ithathelwe ingqalelo emva kokubekwa.Xa ukuqina malunga ne-HRC60, unyango lwe-dehydrogenation kufuneka lwenziwe ngokukhawuleza emva konyango lwangaphezulu, ngaphandle koko iindawo zentsimbi ziya kuqhekeka kwiiyure ezimbalwa.