rakau poroporo

Whakaahuatanga Poto:

Ko te rakau poroporo he momo rakau momi motuhake e hono ana ki te rakau ngote me te iri kurupae. Kei te tihi o te rakau ngote, me mau te kaha, no reira he nui ake te diameter me te teitei ake o te karaehe rino i te rakau ngote, a he maeneene te mata.

Tukuna he imeera ki a matou

Taipitopito Hua

Tohu Hua

Whakatakotoranga Hua

Ko te 1.Polish te rakau he momo rakau momi motuhake e hono ana ki te rakau ngote me te iri kurupae. Kei te tihi o te rakau ngote, me mau te kaha, no reira he nui ake te diameter me te teitei ake o te karaehe rino i te rakau ngote, a he maeneene te mata.

2.Main mahi:

Whakakotahitia me te huinga takai i roto i te pouaka takai hei hiri i te upoko o te puna me te aukati i te whakaputanga o te hinu, hau, wai.

He hononga mo te wa poto i waenga i te rakau ngote me te iri mahunga muera

Te whakaoti i te whakamatautau hoahoa tohu.

Whakaotia nga momo mahi o te upoko pai, penei i te patu papu, te whakarite i te whakatakoto papu.

Momo tepu korero

Uara ingoa	Te diameter o te tinana o te rakau D +0.127-0.254（+0.005-0.010） mm(i roto)	Roa Lmm士 50mm （Mau 士 2in)	Miro diameter ingoa mm（in）	mm (in）) Miro waho te whanui o waho o te pokohiwi	He pai te rahi o te rakau ngote mm (in)
29	28. 6 (11/8）	2438, 3353, 4877, 6707, 7315, 7925 (8, 11. 16. 22. 24, 26)	24（15/16） PR	一	16 (5/8)
29	28. 6 (11/8）	2438, 3353, 4877, 6707, 7315, 7925 (8, 11. 16. 22. 24, 26)	27 （1 1/16） PR	一	19 (3/4)
29	28. 6 (11/8）) ka whakaparahako te rakau ki tetahi pito	2438, 3353, 4877, 6707, 7315, 7925 (8. 11, 16. 22, 24, 26)	24 (15/16 ) SR	31.8+0.127-0.254 (1.250+0.005-0.010)	16 (5/8)
29	28. 6 (11/8）) ka whakaparahako te rakau ki tetahi pito	2438, 3353, 4877, 6707, 7315, 7925 (8. 11, 16. 22, 24, 26)	27 (1 1/16 ) SR	38.1+0.127-0.254 (1.500+0.005-0.010)	19 (3/4)
32	31.8（1 1/4）	3353, 4877, ,6707,7315, 7925, 9144, 10973 (11, 16, 22 . 24. 26, 30. 36)	30 (1 3/16 ) PR	一	22(7/8)
32	31.8（1 1/4）a-roo-riri ki tetahi pito	3353, 4877, ,6707,7315, 7925, 9144, 10973 (11, 16, 22 . 24. 26, 30. 36)	30 (1 3/16 ) SR	41.3+0.127-0.254 (1.625+0.005-0.010)	22(7/8)
38	38. 1 (1 1/2）	4877, 6707, 7315, 7925. 9144. 10973 (16, 22. 24, 26, 30. 36)	35（1 3/8）PR	一	25(1)
38	38. 1 (1 1/2）) he rakau-pouri ki tetahi pito	4877, 6707, 7315, 7925. 9144. 10973 (16, 22. 24, 26, 30. 36)	40（1 9/16）SR	57.2+0.381-0.381 (2.250+0.015-0.015)	29(1 1/8)

● Taonga Miihini o te Wira Whakakorikori Iwi

KOeke	Te Kaha Hua Iti(0.2% Te Huringa Whakanoho)		Te Kaha Tensile Iti		Te Kaha Tensile Morahi		Whakaroa200mm%	Whakahekenga o te Horahanga Z%	HRC	HB	Te ora rohirohi
	psi	MPa	psi	MPa	psi	MPa	≥13	≥50	/	/	≥1.0X106
C	60000	414	90000	621	115000	793	≥13	≥50	/	/	/
D	85000	586	115000	793	140000	965	≥13	≥50	/	/	/
KD	85000	590	115000	795	140000	965	≥13	≥50	/	/	/
H	115000	795	140000	965	173339	1195	≥13	≥45	/	/	/
EHL	/	/	188500	1300	217500	1500	/	/	≥50	≥320	≥2.5X106
Kia mahara: Ki te kore e taea te ine i te kaha tuku iti, me whakaaro kia tukatukahia hei tauira paerewa me te whakauru i te extensometer hei ine.
A He mea hanga mai i te maitai waro kounga teitei, ka eke ki nga ahuatanga miihini o te tepu b Ko te maitai molybdenum (engari kaore i te iti ki tenei momo rino) ka whakamahia, ka taea e te maimoatanga wera whai hua te whakatutuki i nga ahuatanga miihini o tenei tepu

● Te Tito Matū O Te Waa Whakangote E whakamahia ana

AISI	C	Si	Mn	P	S	Cr	Ni	Mo	V	Cu	Al
4130	0.26-0.33	0.17-0.37	0.4-0.7	≤0.025	≤0.025	0.8-1.1	≤0.3	0.15-0.25	/	≤0.2	/
4140	0.38-0.45	0.17-0.37	0.5-0.8	≤0.025	≤0.025	0.9-1.2	≤0.3	0.15-0.25	0.04-0.09	≤0.2	/
4142	0.38-0.45	0.17-0.37	0.5-0.8	≤0.025	≤0.025	0.9-1.2	≤0.3	0.15-0.25	0.04-0.09	≤0.2	/
4330	0.3-0.35	0.15-0.35	0.8-1.1	≤0.025	≤0.025	0.8-1.1	1.65-2.0	0.2-0.3	0.05-0.10	≤0.2	/
4720	0.19-0.23	0.15-0.35	0.85-1.05	≤0.025	≤0.025	0.8-1.05	0.9-1.2	0.22-0.30	0.02-0.05	0.40-0.60	/