Aratohu Irahiko Karāpiti

Ngā Irahiko Karāpiti

E whakamahia ana ngā irahiko karāpiti i roto i te hanga maitai i roto i te oumu pewa hiko nā te mea he teitei te kawe hiko o roto.

Whakaahuatanga

Ko ngā irahiko karāpiti anake ngā hua e wātea ana i tēnei wā he nui ngā taumata kawe hiko me te kaha ki te pupuri i ngā taumata wera tino tiketike e puta ana i tēnei taiao uaua. Ka whakamahia ēnei hei whakamahine i te maitai i roto i ngā oumu koko me ētahi atu tukanga whakarewa. Ka mahi ēnei hei kawe hiko i roto i te oumu, ka whakaputa i te wera e ranea ana hei whakarewa i te konganuku para, te rino, ētahi atu rauemi mata rānei e whakamahia ana hei whakaputa maitai, ētahi atu konganuku rānei. I roto i tētahi oumu noa e whakamahi ana i te au hurihuri me te mahi i te maha o ngā huringa whakaputa ia rā, ka pau katoa tetahi o ngā irahiko e iwa (me tāpiri he irahiko hou), i te toharite, i ia waru ki te tekau hāora mahi. Ko te tere tuturu o te kai me te tāpiri i ngā irahiko mō tētahi oumu motuhake e whakawhirinaki ana ki te whai huatanga me te hua o te oumu.

Tūtohi Rahi/Taumaha

Ingoa		Te whānui o te hiko		Te roa o te hiko		Taumaha hiko (uara tohutoro)
Te whānui x te roa		Mōrahi	Te iti rawa	Mōrahi	Te iti rawa	Taumaha o te hua hiko (haunga te nipple)
inihi	mm	mm	mm	mm	mm	kg
14×60	350×1500	357	352	1550	1400	253
14×72	350×1800			1875	1700	304
14×96	350×2400			2475	2275	406
16×60	400×1500	409	403	1550	1400	334
16×72	400×1800			1875	1700	395
16×96	400×2400			2475	2275	532
18×72	450×1800	460	454	1875	1700	496
18×96	450×2400			2475	2275	665
18×110	450×2700			2850	2550	766
20×72	500×1800	511	505	1875	1700	614
20×84	500×2100			2175	1975	715
20×96	500×2400			2475	2275	824
20×110	500×2700			2850	2550	927
22×84	550×2100	562	556	2175	1975	873
22×96	550×2400	562	556	2475	2275	995
24×84	600×2100	613	607	2175	1975	1040
24×96	600×2400			2475	2275	1190
24×110	600×2700			2850	2550	1340
26×110	650×2700	663	657	2850	2550	1580
28×110	700×2700	714	708	2850	2550	1830
30×110	750×2700	765	759	2850	2550	2060

He Aratohu ki ngā Irahiko Karāpiti

	Wāhanga	Oumu AC			Ōumu DC
		350~450mm		500~700mm	550~800mm
		14" ~ 18"		20" ~ 28"	22" ~ 30"
Ngā Āhuatanga		RP	UHP	UHP	UHP
Kīanga papatipu	karamu/cm3	1.58～1.70	1.65～1.76	1.66～1.74	1.68～1.75
Ātete motuhake	μΩm	6.0～8.5	4.5～6.5	4.5～6.5	4.2~5.5
Te modulus a Young	kN/mm2	8~12	11~16	9~14	9~13
	GPa	8~12	11~16	9~14	9~13
	kgf/mm2	800～1,200	1,100～1,650	950～1,400	900~1,300
Te kaha piko	N/cm2	1,000~1,400	1,200～1,800	1,000~1,500	1,000~1,500
	MPa	10~14	12~18	10~15	10~15
	kgf/cm2	100~140	120~180	100~150	100~150
Tauwehenga whānui wera	×10-6/ﾟC	0.8~1.5	0.8~1.5	0.5~1.0	0.5~0.9
(Whakamahana ki te 400°C)	×10-6/ﾟF	0.4~0.8	0.4~0.8	0.3~0.6	0.3~0.5
Te mātotoru tūturu	karamu/cm3	2.20～2.23	2.20～2.23	2.20～2.23	2.20～2.23
Te pūngao katoa	％	23~29	20~26	21~26	20~25
Te nui o te pungarehu	％	Iti iho i te 0.3	Iti iho i te 0.3	Iti iho i te 0.3	Iti iho i te 0.3