I-China DIN7991 Hex Socket Countersunk Screw Ibanga Le-Carbon Steel Zinc Plated Ibanga 8.8 10.9 abakhiqizi nabaphakeli

I-DIN7991 Hex Socket Countersunk Screw Grade Carbon Steel Zinc Plated Ibanga 8.8 10.9

Incazelo emfushane:

Okujwayelekile: DIN7991

Igama Lomkhiqizo: I-Hex Socket Flat Head Screw

Amagama Abalulekile: I-DIN7991, isikulufu se-Hex socket flat head, Countersunk Screw

Usayizi: M3-M42

Izinto: 10B21, 35CrMo, 40Cr

Ibanga Lokuqina: 8.8, 10.9

Ukwelapha Okungaphezulu: I-White Zinc Plated

Ubude Bomucu: Intambo Egcwele/Uhhafu

Ukupakisha: Isikhwama / Ibhokisi / Ikesi lezinkuni

Ezinye izici: Nikeza umaki wekhanda owenziwe ngezifiso

Thumela i-imeyili kithi

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Incazelo

SHESHAImpendulo

SHESHAIkhotheshini

SHESHAUkulethwa

ILUNGELE UKULETHWA NGOMKHUMBA

10000+ I-SKU endaweni yokugcina impahla

Sizibophezela ezintweni ze-RTS:

70% izinto ezilethiwe ezinsukwini ezi-5

80% izinto ezilethiwe phakathi kwezinsuku ezingu-7

90% izinto ezilethiwephakathi kwezinsuku eziyi-10

Ama-oda amaningi, sicela uxhumane nesevisi yamakhasimende

d		M3	M4	M5	M6	M8	M10	M12	(M14)	M16	(M18)	M20	(M22)	M24
d
P	Iphimbo	0.5	0.7	0.8	1	1.25	1.5	1.75	2	2	2.5	2.5	2.5	3
α	inani.(+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=Izibizo	6	8	10	12	16	20	24	27	30	33	36	36	39
dk	Okuncane	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=Izibizo	3	4	5	6	8	10	12	14	16	18	20	22	24
ds	Okuncane	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	Okuncane	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	Ubukhulu	1.7	2.3	2.8	3.3	4.4	5.5	6.5	7	7.5	8	8.5	13.1	14
s	Ngokuzisholo	2	2.5	3	4	5	6	8	10	10	12	12	14	14
	Okuncane	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
	Ubukhulu	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=Izibizo	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	Okuncane	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

Incazelo yemininingwane

Izinsimbi eziqinile eziphakeme zizokhiqiza ukucwebezela lapho zifakwe uthayela. Udinga ukunakwa okukhethekile.

I-hydrogen embrittlement ngokuvamile ibonakala ngokuphuka kwesikhashana ngaphansi kwengcindezi. Kube khona iziphethu zezimoto, amawasha, izikulufu, iziphethu zeshidi nezinye izingxenye zikathayela, emahoreni ambalwa ngemva kokwephulwa komhlangano, isilinganiso sokuphuka singu-40% ~ 50%. Enqubweni yokusebenzisa izingxenye ze-cadmium-plated zomkhiqizo okhethekile, kwaba nokuqhekeka kwe-batch crack, futhi inkinga yokhiye kazwelonke yaxazululwa futhi kwenziwa inqubo eqinile ye-dehydrogenation. Ngaphezu kwalokho, kukhona ezinye embrittlement hydrogen akubonisi ukubambezeleka mkhuba ukuphuka, ezifana: electroplating isiphanyeko (insimbi yensimbi, ucingo lwethusi) ngenxa izikhathi eziningi electroplating futhi pickling plating, hydrogen Ukungena kubi kakhulu, ngokuvamile avele ukusetshenziswa fold kwenzeka i-brittle fracture phenomenon; I-mandrel ye-shotgun, ngemva kwezikhathi eziningana ze-chroming, yawela phansi futhi yaphuka; Ezinye izingxenye ezicishiwe (ukucindezeleka okukhulu kwangaphakathi) zizoqhekeka lapho zikhetha. Lezi zingxenye zine-hydrogenated kakhulu futhi ziyaqhekeka ngaphandle kokucindezeleka kwangaphandle, ezingasakwazi ukusetshenziselwa ukubuyisela ukuqina kwangempela nge-dehydrogenation.

Ukuphakama kwamandla ezinto ezibonakalayo, kukhulu ukuzwela kwe-hydrogen embrittlement. Lona umqondo oyisisekelo okufanele ucaciswe ochwepheshe bokwelapha okungaphezulu lapho behlanganisa imininingwane yenqubo ye-electroplating. Izinsimbi ezinamandla aqinile σb>105kg/mm2 ezidingwa izindinganiso zamazwe ngamazwe kufanele zibe ngaphansi kwengcindezi yangaphambi kokucwenga kanye nokwelashwa kwe-post-plating dehydrogenation ngokufanele. Imboni yezokundiza yaseFrance idinga ukwelashwa okuhambisanayo kwe-dehydrogenation ezingxenyeni zensimbi ezinamandla okukhiqiza angu-σs>90kg/mm2.

Ngenxa yokuxhumana okuhle phakathi kwamandla ensimbi nobulukhuni, kunembile futhi kulula ukwahlulela ukuzwela kwe-hydrogen embrittlement yezinto ngobulukhuni kunamandla. Ngoba umdwebo womkhiqizo ophelele kanye nenqubo yokwenza imishini kufanele imakwe ngobulukhuni bensimbi. Ku-electroplating, sithole ukuthi ubulukhuni bensimbi ezungeze i-HRC38 buqale ukukhombisa ubungozi bokuphuka kwe-hydrogen embrittlement. Ezingxenyeni ezingaphezulu kune-HRC43, ukukhishwa kwe-hydrogen kufanele kucatshangelwe ngemva kokucwetshwa. Uma ubulukhuni bucishe bube yi-HRC60, ukwelashwa kwe-dehydrogenation kufanele kwenziwe ngokushesha ngemva kokwelashwa kwendawo, ngaphandle kwalokho izingxenye zensimbi zizoqhekeka phakathi namahora ambalwa.