Saina DIN7991 Hex Socket Countersunk Screw Grade Carbon Steel Zinc Plated Grade 8.8 10.9 gaosi oloa ma fa'atau |Hongji

DIN7991 Hex Socket Countersunk Screw Grade Carbon Steel Zinc Plated Grade 8.8 10.9 Ata Fa'aalia

DIN7991 Hex Socket Countersunk Screw Grade Carbon Steel Zinc Plated Vasega 8.8 10.9

Fa'amatalaga Puupuu:

Tulaga masani: DIN7991

Igoa Oloa: Hex Socket Flat Head Screw

Upu Autu: DIN7991, Hex socket flat head screw, Countersunk Screw

Tele: M3-M42

Mea: 10B21, 35CrMo, 40Cr

Vasega Malosi: 8.8, 10.9

Togafitiga i luga: Paʻepaʻe Zinc Plated

Umi ole filo: filo atoa/ afa filo

afifiina: Ato/Katoni/Mata laupapa

Isi Fa'ailoga: Tuuina atu fa'ailoga ulu fa'apitoa

Auina imeli ia matou

Fa'amatalaga Oloa

Faailoga o oloa

Fa'amatalaga

VAVETali

VAVEUpusii

VAVETilivaina

SAUNIUNE E FA'A'AI FA'ATA'U

10000+ SKU ile faleteuoloa

Matou te tautino mo mea RTS:

70% mea na avatu i totonu ole 5 aso

80% mea na avatu i totonu ole 7 aso

90% mea na avatui totonu ole 10 aso

Fa'atonuga tele, fa'amolemole fa'afeso'ota'i le au'aunaga fa'atau

d		M3	M4	M5	M6	M8	M10	M12	(M14)	M16	(M18)	M20	(M22)	M24
d
P	Pitch	0.5	0.7	0.8	1	1.25	1.5	1.75	2	2	2.5	2.5	2.5	3
α	tol.(+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	Max=Numera	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	Max=Numera	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	Nominal	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	Max=Numera	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

Fa'amatalaga fa'amatalaga

O mea fa'apipi'i malosi maualuga o le a maua ai le mafiafia pe a fa'a'umea.Manaomia le gauai faapitoa.

O le fa'aleagaina o le hydrogen e masani ona fa'aalia i le tuai ona gau i lalo o le fa'alavelave.O loʻo i ai vaipuna taʻavale, fufulu, sikulima, vaipuna ma isi vaega uʻamea, i ni nai itula talu ona malepe le faʻapotopotoga, o le gau o le 40% ~ 50%.I le faagasologa o le faʻaaogaina o vaega faʻapipiʻi cadmium o se oloa faʻapitoa, sa i ai le gau gau, ma o se faʻafitauli autu a le atunuʻu na foia ma faia ai se faiga faʻamaʻi faʻamaʻi.E le gata i lea, o loʻo i ai nisi o le hydrogen embrittlement e leʻo faʻaalia le tuai o gau gau, e pei o le: faʻapipiʻi faʻamau (uaea uʻamea, uaea apamemea) ona o le tele o taimi o le faʻaogaina o le eletise ma le faʻapipiʻiina, e sili atu le ogaoga o le faʻaogaina o le hydrogen, e masani ona faʻaalia i le faʻaaogaina o se gaugau. fa'alavelave gau gau;O le mandrel o se fana, ina ua mavae ni nai taimi o chroming, na pau i lalo ma gau;O nisi vaega ua tineia (tetele i totonu) o le a ta'e pe a pikiina.O nei vaega e matua'i fa'afefeteina ma ta'e e aunoa ma se fa'alavelave i fafo, lea e le mafai ona toe fa'aaogaina e toe fa'afoisia ai le malosi muamua e ala i le dehydrogenation.

O le maualuga o le malosi o meafaitino, o le sili atu lea o le faʻaogaina o le hydrogen embrittlement.Ole manatu fa'avae lea e tatau ona fa'amaninoina e tekinisia togafitiga ile fa'apipi'iina ole fa'asologa ole fa'asologa ole eletise.O u'amea e iai le malosi fa'amalosi σb>105kg/mm2 e mana'omia e tulaga fa'ava-o-malo e tatau ona fa'atatau i le fa'amamafaina muamua ma le fa'amama fa'ama'i fa'ama'i.E mana'omia e le kamupani vaalele a Farani se togafitiga fa'ama'i fa'ama'i mo vaega u'amea e maua ai le malosi σs>90kg/mm2.

Ona o le fetaui lelei i le va o le uʻamea malosi ma le maaa, e sili atu le faʻaogaina ma faigofie e faʻamasino ai le faʻaogaina o le hydrogen embrittlement lagona o mea e ala i le faigata nai lo le malosi.Ona o se oloa atoatoa ata tusi ma machining faagasologa e tatau ona faailoga i le maaa uamea.I le electroplating, na matou iloa ai o le maaa o le uamea i le HRC38 na amata ona faʻaalia le lamatiaga o le gau o le hydrogen.Mo vaega e maualuga atu i le HRC43, e tatau ona iloiloina le dehydrogenation pe a uma ona faʻapipiʻi.A oʻo i le maaa e tusa ma le HRC60, e tatau ona faʻatinoina togafitiga faʻamaʻi i le taimi lava e maeʻa ai togafitiga, a leai o le a taʻe vaega uamea i totonu o ni nai itula.