Saina [Kopi] DIN7991 Hex Socket Countersunk Screw Grade Carbon Steel Zinc Plated Grade 8.8 10.9 gaosi oloa ma fa'atau

[Kopi] DIN7991 Hex Socket Countersunk Screw Grade Carbon Steel Zinc Plated Grade 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, puna o laupepa 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 mafaufau le dehydrogenation pe a uma ona faʻapipiʻi. A oʻo i le maaa e tusa ma le HRC60, e tatau ona faʻataunuʻuina togafitiga dehydrogenation i le taimi lava e maeʻa ai togafitiga, a leai o le a taʻe vaega uamea i totonu o ni nai itula.