HJDK550 raupapa-waho whakamatao drill
He pai mo te keri rino, he kowiri tira, he rino maka, he taonga kore-ferrous.
Whakakikorua Nano AlTiN
Rauemi: tungsten carbide
Tauākī kupu:
HJDK550 drill i whakawhanakehia mo te miihini matatini o nga rawa rino. Ka kaha te whakaaro me ona uara tapahi teitei me te kounga o te kohao pai tonu. Ka puta he mata tapahi tino pumau me te tika na te miihini-hangahanga motuhake. Ko te tino maeneene o te mata o te paetukutuku angiangi me te kōtaha putorino ka whakaiti i te waku i waenga i te maaka me te maramara. Ka whakahekehia te pāmahana miihini me te pai ake o te wehenga maramara. Ka whakaitihia nga kaha tapahi. Ko enei ahuatanga taputapu ka puta te kounga teitei o te kohao me te oranga taputapu.
He pai mo te keri rino, he kowiri tira, he rino maka, he taonga kore-ferrous.
He whao, he tino pai te kaha ki te pokapu whaiaro.
Ira torotoro, iti ake te aukati tapahi.
Ko te ngutu ngutu, teitei ake te reeti kai, te pai ake.
Rahi auau:
Nga Mahi Waara
Waehere tono | Waho Diamita | Putorino Te roa | Te roa Takaroa | Te Diamita |
(D) | (l) | (L) | (D) | |
HJDK550-005S | 0.5 | 6 | 26 | 0.5 |
HJDK550-006S | 0.6 | 6 | 26 | 0.6 |
HJDK550-007S | 0.7 | 6 | 26 | 0.7 |
HJDK550-008S | 0.8 | 6 | 26 | 0.8 |
HJDK550-009S | 0.9 | 6 | 26 | 0.9 |
HJDK550-0100S | 1 | 6 | 26 | 1 |
HJDK550-011S | 1.1 | 7 | 28 | 1.1 |
HJDK550-012S | 1.2 | 8 | 30 | 1.2 |
HJDK550-013S | 1.3 | 8 | 30 | 1.3 |
HJDK550-014S | 1.4 | 9 | 32 | 1.4 |
HJDK550-015S | 1.5 | 9 | 32 | 1.5 |
HJDK550-016S | 1.6 | 10 | 34 | 1.6 |
HJDK550-017S | 1.7 | 10 | 34 | 1.7 |
HJDK550-018S | 1.8 | 11 | 36 | 1.8 |
HJDK550-019S | 1.9 | 11 | 36 | 1.9 |
HJDK550-020S | 2 | 12 | 38 | 2 |
HJDK550-021S | 2.1 | 12 | 38 | 3 |
HJDK550-022S | 2.2 | 13 | 40 | 3 |
HJDK550-023S | 2.3 | 13 | 40 | 3 |
HJDK550-024S | 2.4 | 14 | 43 | 3 |
HJDK550-025S | 2.5 | 14 | 43 | 3 |
HJDK550-026S | 2.6 | 14 | 43 | 3 |
HJDK550-027S | 2.7 | 16 | 46 | 3 |
HJDK550-028S | 2.8 | 16 | 46 | 3 |
HJDK550-029S | 2.9 | 16 | 46 | 3 |
HJDK550-030S | 3 | 16 | 46 | 3 |
HJDK550-031S | 3.1 | 18 | 49 | 4 |
HJDK550-032S | 3.2 | 18 | 49 | 4 |
HJDK550-033S | 3.3 | 18 | 49 | 4 |
HJDK550-034S | 3.4 | 20 | 52 | 4 |
HJDK550-035S | 3.5 | 20 | 52 | 4 |
HJDK550-036S | 3.6 | 20 | 52 | 4 |
HJDK550-037S | 3.7 | 20 | 52 | 4 |
HJDK550-038S | 3.8 | 20 | 52 | 4 |
HJDK550-039S | 3.9 | 22 | 55 | 4 |
HJDK550-040S | 4 | 22 | 55 | 4 |
HJDK550-041S | 4.1 | 22 | 55 | 5 |
HJDK550-042S | 4.2 | 22 | 55 | 5 |
HJDK550-043S | 4.3 | 22 | 55 | 5 |
HJDK550-044S | 4.4 | 24 | 55 | 5 |
HJDK550-045S | 4.5 | 24 | 55 | 5 |
HJDK550-046S | 4.6 | 24 | 58 | 5 |
HJDK550-047S | 4.7 | 24 | 58 | 5 |
HJDK550-048S | 4.8 | 24 | 58 | 5 |
HJDK550-049S | 4.9 | 26 | 58 | 5 |
HJDK550 -050S | 5 | 26 | 58 | 5 |
HJDK550-051S | 5.1 | 26 | 62 | 5.1 |
HJDK550-052S | 5.2 | 26 | 62 | 5.2 |
HJDK550-053S | 5.3 | 28 | 62 | 5.3 |
HJDK550-054S | 5.4 | 28 | 62 | 5.4 |
HJDK550-055S | 5.5 | 28 | 66 | 5.5 |
HJDK550-056S | 5.6 | 28 | 66 | 5.6 |
HJDK550-057S | 5.7 | 28 | 66 | 5.7 |
HJDK550-058S | 5.8 | 28 | 66 | 5.8 |
HJDK550-059S | 5.9 | 28 | 66 | 5.9 |
HJDK550-060S | 6 | 31 | 66 | 6 |
HJDK550-061S | 6.1 | 31 | 70 | 7 |
HJDK550-062S | 6.2 | 31 | 70 | 7 |
HJDK550-063S | 6.3 | 31 | 70 | 7 |
HJDK550 -064S | 6.4 | 31 | 70 | 7 |
HJDK550 -065S | 6.5 | 31 | 70 | 7 |
HJDK550-066S | 6.6 | 31 | 70 | 7 |
HJDK550-067S | 6.7 | 31 | 70 | 7 |
HJDK550-068S | 6.8 | 34 | 74 | 7 |
HJDK550-069S | 6.9 | 34 | 74 | 7 |
HJDK550-070S | 7 | 34 | 74 | 7 |
HJDK550-071S | 7.1 | 34 | 74 | 8 |
HJDK550-072S | 7.2 | 34 | 74 | 8 |
HJDK550-073S | 7.3 | 34 | 74 | 8 |
HJDK550-074S | 7.4 | 34 | 74 | 8 |
HJDK550-075S | 7.5 | 34 | 74 | 8 |
HJDK550-076S | 7.6 | 37 | 79 | 8 |
HJDK550-077S | 7.7 | 37 | 79 | 8 |
HJDK550-078S | 7.8 | 37 | 79 | 8 |
HJDK550-079S | 7.9 | 37 | 79 | 8 |
HJDK550-080S | 8 | 37 | 79 | 8 |
HJDK550-081S | 8.1 | 37 | 79 | 9 |
HJDK550 -082S | 8.2 | 37 | 79 | 9 |
HJDK550 -083S | 8.3 | 37 | 79 | 9 |
HJDK550 -084S | 8.4 | 37 | 79 | 9 |
HJDK550-085S | 8.5 | 37 | 79 | 9 |
HJDK550-086S | 8.6 | 40 | 84 | 9 |
HJDK550-087S | 8.7 | 40 | 84 | 9 |
HJDK550-088S | 8.8 | 40 | 84 | 9 |
HJDK550-089S | 8.9 | 40 | 84 | 9 |
HJDK550-090S | 9 | 40 | 84 | 9 |
HJDK550-091S | 9.1 | 40 | 84 | 10 |
HJDK550-092S | 9.2 | 40 | 84 | 10 |
HJDK550-093S | 9.3 | 40 | 84 | 10 |
HJDK550-094S | 9.4 | 40 | 84 | 10 |
HJDK550 carbide Drills
Waehere tono | Waho Diamita | Putorino Te roa | Te roa Takaroa | Te Diamita |
(D) | (l) | (L) | (D) | |
HJDK550-095S | 9.5 | 40 | 84 | 10 |
HJDK550-096S | 9.6 | 43 | 89 | 10 |
HJDK550-097S | 9.7 | 43 | 89 | 10 |
HJDK550-098S | 9.8 | 43 | 89 | 10 |
HJDK550-099S | 9.9 | 43 | 89 | 10 |
HJDK550-100S | 10 | 43 | 89 | 10 |
HJDK550-101S | 10.1 | 43 | 89 | 11 |
HJDK550-102S | 10.2 | 43 | 89 | 11 |
HJDK550-103S | 10.3 | 43 | 89 | 11 |
HJDK550-104S | 10.4 | 43 | 89 | 11 |
HJDK550-105S | 10.5 | 43 | 89 | 11 |
HJDK550-106S | 10.6 | 43 | 89 | 11 |
HJDK550-107S | 10.7 | 43 | 89 | 11 |
HJDK550-108S | 10.8 | 43 | 89 | 11 |
HJDK550-109S | 10.9 | 43 | 89 | 11 |
HJDK550-110S | 11 | 47 | 95 | 11 |
HJDK550-111S | 11.1 | 47 | 95 | 12 |
HJDK550-112S | 11.2 | 47 | 95 | 12 |
HJDK550-113S | 11.3 | 47 | 95 | 12 |
HJDK550-114S | 11.4 | 47 | 95 | 12 |
HJDK550-115S | 11.5 | 47 | 95 | 12 |
HJDK550-116S | 11.6 | 47 | 95 | 12 |
HJDK550-117S | 11.7 | 47 | 95 | 12 |
HJDK550-118S | 11.8 | 47 | 95 | 12 |
HJDK550-119S | 11.9 | 47 | 95 | 12 |
HJDK550-120S | 12 | 51 | 102 | 12 |
HJDK550-121S | 12.1 | 51 | 102 | 13 |
HJDK550-122S | 12.2 | 51 | 102 | 13 |
HJDK550-123S | 12.3 | 51 | 102 | 13 |
HJDK550-124S | 12.4 | 51 | 102 | 13 |
HJDK550-125S | 12.5 | 51 | 102 | 13 |
HJDK550-126S | 12.6 | 51 | 102 | 13 |
HJDK550-127S | 12.7 | 51 | 102 | 13 |
HJDK550-128S | 12.8 | 51 | 102 | 13 |
HJDK550-129S | 12.9 | 51 | 102 | 13 |
HJDK550-130S | 13 | 51 | 102 | 13 |
HJDK550 Paerewa Drills:
Waehere tono | Waho Diamita | Putorino Te roa |
(D) | (l) | |
HJDK550-0030 | 0.3 | 5.5 |
HJDK550-0035 | 0.35 | 5.5 |
HJDK550-0040 | 0.4 | 7 |
HJDK550-0045 | 0.45 | 7 |
HJDK550-0050 | 0.5 | 8.5 |
HJDK550-0055 | 0.55 | 8.5 |
HJDK550-0060 | 0.6 | 9.5 |
HJDK550-0065 | 0.65 | 9.5 |
HJDK550-0070 | 0.7 | 9.5 |
HJDK550-0075 | 0.75 | 9.5 |
HJDK550-0080 | 0.8 | 9.5 |
HJDK550-0085 | 0.85 | 9.5 |
HJDK550-0090 | 0.9 | 9.5 |
HJDK550-0095 | 0.95 | 9.5 |
HJDK550-0100 | 1 | 10.5 |
HJDK550-0105 | 1.05 | 10.5 |
HJDK550-0110 | 1.1 | 10.5 |
HJDK550-0115 | 1.15 | 10.5 |
HJDK550-0120 | 1.2 | 10.5 |
HJDK550-0125 | 1.25 | 10.5 |
HJDK550-0130 | 1.3 | 12 |
HJDK550-0135 | 1.35 | 12 |
HJDK550-0140 | 1.4 | 12 |
HJDK550-0145 | 1.45 | 12 |
HJDK550-0150 | 1.5 | 12 |
HJDK550-0155 | 1.55 | 12 |
HJDK550-0160 | 1.6 | 12 |
HJDK550-0165 | 1.65 | 12 |
HJDK550-0170 | 1.7 | 12 |
HJDK550-0175 | 1.75 | 12 |
HJDK550-0180 | 1.8 | 12 |
HJDK550-0185 | 1.85 | 12 |
HJDK550-0190 | 1.9 | 12 |
HJDK550-0195 | 1.95 | 12 |
HJDK550-0200 | 2 | 12 |
HJDK550-0205 | 2.05 | 12 |
HJDK550-0210 | 2.1 | 12 |
HJDK550-0215 | 2.15 | 12 |
HJDK550-0220 | 2.2 | 12 |
HJDK550-0225 | 2.25 | 12 |
HJDK550-0230 | 2.3 | 12 |
HJDK550-0235 | 2.35 | 12 |
HJDK550-0240 | 2.4 | 12 |
HJDK550-0245 | 2.45 | 12 |
HJDK550-0250 | 2.5 | 12 |
HJDK550-0255 | 2.55 | 12 |
HJDK550-0260 | 2.6 | 12 |
HJDK550-0265 | 2.65 | 12 |
HJDK550-0270 | 2.7 | 12 |
HJDK550-0275 | 2.75 | 12 |
HJDK550-0280 | 2.8 | 12 |
HJDK550-0285 | 2.85 | 12 |
HJDK550-0290 | 2.9 | 12 |
HJDK550-0295 | 2.95 | 12 |
HJDK550-0300 | 3 | 12 |
HJDK550-0305 | 3.05 | 12 |
HJDK550-0310 | 3.1 | 12 |
HJDK550-0315 | 3.15 | 12 |
HJDK550-03175 | 3.175 | 12 |
Ka taea e matou te whakaputa i nga akoako 3D, 5D, 8D i runga i nga whakaritenga a te kaihoko, i nga akoako kore paerewa ranei kua whakaritea. Ka taea hoki e matou te whakaputa i nga mira mutunga kore i runga i te ritenga.
Hanganga rauemi taputapu:
1.Ahuatanga Tinana:
A) Maamaa nui ake i te rite ranei ki te 92.8 HRA;
B) He nui ake, he rite ranei ki te 14.2 g/cm³;
C) TRS nui ake i te rite ranei ki te 4200 N/mm²;
D) Karekau o te wahanga ETA;
E) Karekau he poke i etahi atu rawa;
F) Porosity = A00 / B00 / C00 ;
G) He rite te rahi o te witi. Kaore he rahi o te witi e nui ake i te mea kua tohua.
H) Chromium carbide aukati tipu witi anake.
2.Ko nga taputapu katoa o te hanga, ko nga paninga ka whakamahia i Germany, Switzerland, taputapu tukatuka;
paninga:
Whakakikorua Nano AlTiN
Nga Ahuatanga me te Mahi
1, Ko te ihirangi konumohe teitei e whakarato ana i te pakeke wera me te aukati i te waikura.
2、Ko te tikanga motuhake ka arotau i te hanganga o te paninga, ka tino pai ake te pumau, te whakaiti i te maha o te maturuturu o te mata.
Tawhā whakamahinga whakahau whakamatao waho: | |||||||||||
Rauemi pepa mahi | Te tere tapahi | Rere whangai(mm/rev) | |||||||||
(m/mene) | |||||||||||
Te whakamatao o waho | D3 | D4 | D6 | D8 | D10 | D12 | D14 | D16 | D18 | D20 | |
whakawiri | |||||||||||
He rino waro iti, maramara roa | 100 | 0.09 | 0.11 | 0.14 | 0.19 | 0.23 | 0.24 | 0.28 | 0.3 | 0.33 | 0.34 |
(<125HB) | 80 | 0.13 | 0.15 | 0.19 | 0.25 | 0.3 | 0.33 | 0.38 | 0.42 | 0.42 | 0.43 |
50 | 0.16 | 0.19 | 0.23 | 0.31 | 0.38 | 0.41 | 0.45 | 0.5 | 0.5 | 0.51 | |
He rino waro iti, he tapahi poto, | 100 | 0.09 | 0.11 | 0.14 | 0.19 | 0.23 | 0.24 | 0.28 | 0.3 | 0.33 | 0.34 |
he maitai totika | 75 | 0.13 | 0.15 | 0.19 | 0.25 | 0.3 | 0.33 | 0.38 | 0.42 | 0.42 | 0.43 |
(<125HB) | 50 | 0.16 | 0.19 | 0.23 | 0.31 | 0.38 | 0.41 | 0.45 | 0.5 | 0.5 | 0.51 |
Te waro teitei | 90 | 0.09 | 0.11 | 0.14 | 0.19 | 0.23 | 0.24 | 0.28 | 0.3 | 0.33 | 0.34 |
me te rino waro waenga | 70 | 0.13 | 0.15 | 0.19 | 0.25 | 0.3 | 0.33 | 0.38 | 0.42 | 0.42 | 0.43 |
(<25HRC) | 45 | 0.16 | 0.19 | 0.23 | 0.31 | 0.38 | 0.41 | 0.45 | 0.5 | 0.5 | 0.51 |
He rino, he rino taputapu | 90 | 0.09 | 0.11 | 0.14 | 0.19 | 0.23 | 0.24 | 0.28 | 0.3 | 0.33 | 0.34 |
(<35HRC) | 70 | 0.13 | 0.15 | 0.19 | 0.25 | 0.3 | 0.33 | 0.38 | 0.42 | 0.42 | 0.43 |
45 | 0.16 | 0.19 | 0.23 | 0.31 | 0.38 | 0.41 | 0.45 | 0.5 | 0.5 | 0.51 | |
Te maitai, te rino taputapu | 80 | 0.09 | 0.1 | 0.13 | 0.17 | 0.21 | 0.22 | 0.26 | 0.28 | 0.31 | 0.31 |
(35-48HRC) | 60 | 0.12 | 0.14 | 0.17 | 0.23 | 0.28 | 0.3 | 0.35 | 0.37 | 0.38 | 0.39 |
40 | 0.14 | 0.17 | 0.22 | 0.29 | 0.35 | 0.37 | 0.41 | 0.44 | 0.46 | 0.47 | |
PH me ferritic, martensitic maitai | 70 | 0.09 | 0.1 | 0.13 | 0.17 | 0.21 | 0.22 | 0.26 | 0.28 | 0.31 | 0.31 |
(<35HRC) | 50 | 0.12 | 0.14 | 0.17 | 0.23 | 0.28 | 0.3 | 0.35 | 0.37 | 0.38 | 0.39 |
30 | 0.14 | 0.17 | 0.23 | 0.29 | 0.35 | 0.37 | 0.41 | 0.44 | 0.46 | 0.47 | |
Austenitic kowiri tira | 0.05 | 0.06 | 0.07 | 0.08 | 0.09 | 0.1 | 0.11 | 0.12 | 0.13 | 0.14 | |
(130-200HB) | 0.08 | 0.1 | 0.12 | 0.13 | 0.15 | 0.17 | 0.18 | 0.2 | 0.22 | 0.24 | |
0.1 | 0.12 | 0.14 | 0.18 | 0.2 | 0.22 | 0.24 | 0.24 | 0.26 | 0.28 | ||
Austenitic kaha teitei | 0.03 | 0.04 | 0.05 | 0.06 | 0.07 | 0.08 | 0.09 | 0.1 | 0.1 | 0.12 | |
me te hanga kowiri tira | 0.06 | 0.08 | 0.08 | 0.1 | 0.11 | 0.13 | 0.13 | 0.14 | 0.14 | 0.16 | |
(<25HRC) | 0.08 | 0.1 | 0.1 | 0.12 | 0.14 | 0.16 | 0.18 | 0.18 | 0.2 | 0.22 | |
He kowiri tira matarua | 0.03 | 0.04 | 0.05 | 0.06 | 0.07 | 0.08 | 0.09 | 0.1 | 0.1 | 0.12 | |
(<30HRC) | 0.06 | 0.08 | 0.08 | 0.1 | 0.11 | 0.13 | 0.13 | 0.14 | 0.14 | 0.16 | |
0.08 | 0.1 | 0.1 | 0.12 | 0.14 | 0.16 | 0.18 | 0.18 | 0.2 | 0.22 | ||
Te rino hina | 100 | 0.13 | 0.15 | 0.17 | 0.2 | 0.25 | 0.26 | 0.28 | 0.3 | 0.32 | 0.36 |
(<32HRC) | 80 | 0.17 | 0.02 | 0.26 | 0.32 | 0.36 | 0.38 | 0.4 | 0.42 | 0.44 | 0.48 |
60 | 0.21 | 0.26 | 0.32 | 0.4 | 0.42 | 0.46 | 0.5 | 0.52 | 0.54 | 0.56 | |
Te rino o te reo | 100 | 0.11 | 0.13 | 0.15 | 0.17 | 0.22 | 0.22 | 0.24 | 0.26 | 0.3 | 0.34 |
he uaua te tukatuka, | 80 | 0.15 | 0.18 | 0.23 | 0.26 | 0.28 | 0.34 | 0.35 | 0.4 | 0.4 | 0.43 |
te rino maka nodular | 60 | 0.18 | 0.22 | 0.27 | 0.38 | 0.38 | 0.42 | 0.44 | 0.48 | 0.46 | 0.5 |
(<28HRC) | |||||||||||
Te rino whakarewa teitei, | 90 | 0.06 | 0.08 | 0.1 | 0.13 | 0.15 | 0.17 | 0.19 | 0.2 | 0.23 | 0.23 |
te rino maka nodular | 70 | 0.09 | 0.1 | 0.13 | 0.17 | 0.2 | 0.22 | 0.26 | 0.27 | 0.28 | 0.29 |
(<28HRC) | 60 | 0.11 | 0.13 | 0.16 | 0.21 | 0.26 | 0.28 | 0.31 | 0.33 | 0.34 | 0.35 |
Te konumohe kua mahia | 0.06 | 0.13 | 0.16 | 0.18 | 0.2 | 0.22 | 0.24 | 0.28 | 0.32 | 0.34 | |
(Si<12%) | 0.09 | 0.2 | 0.22 | 0.26 | 0.3 | 0.34 | 0.36 | 0.38 | 0.4 | 0.42 | |
0.11 | 0.26 | 0.28 | 0.32 | 0.38 | 0.42 | 0.44 | 0.46 | 0.48 | 0.48 | ||
Makahia te konumohe | 0.06 | 0.13 | 0.16 | 0.18 | 0.2 | 0.22 | 0.24 | 0.28 | 0.32 | 0.34 | |
(Si<12%) | 0.09 | 0.2 | 0.22 | 0.26 | 0.3 | 0.34 | 0.36 | 0.38 | 0.4 | 0.42 | |
0.11 | 0.26 | 0.28 | 0.32 | 0.38 | 0.42 | 0.44 | 0.46 | 0.48 | 0.48 | ||
Makahia te konumohe | 0.06 | 0.13 | 0.16 | 0.18 | 0.2 | 0.22 | 0.24 | 0.28 | 0.32 | 0.34 | |
(Si>12%) | 0.09 | 0.2 | 0.22 | 0.26 | 0.3 | 0.34 | 0.36 | 0.38 | 0.4 | 0.42 | |
0.11 | 0.26 | 0.28 | 0.32 | 0.38 | 0.42 | 0.44 | 0.46 | 0.48 | 0.48 | ||
Parahi, parapara parapara | 0.06 | 0.13 | 0.16 | 0.18 | 0.2 | 0.22 | 0.24 | 0.28 | 0.32 | 0.34 | |
(<200HB) | 0.09 | 0.2 | 0.22 | 0.26 | 0.3 | 0.34 | 0.36 | 0.38 | 0.4 | 0.42 | |
0.11 | 0.26 | 0.28 | 0.32 | 0.38 | 0.42 | 0.44 | 0.46 | 0.48 | 0.48 |
aro:
Me mohio kei te mau tonu te mahi me te miihini me te whakamahi i te putunga tika, te whakamahi i nga tiihi waipēhi, nga tiihi collet kounga teitei.
Me mohio kei te iti iho i te 0.02mm te omatanga kua tohua (TIR).
Ko te tikanga tapahi e tika ana mo te tono wai whakarewa.
Mena kaore te rahi o te taputapu i te ripanga. Tena koa tirohia te tepu tepu ki te kowhiringa rahi o te rahi o te mata o nga tawhā tapahi, whakatika i nga tawhā tapahi kia rite ki nga tikanga mahi i te wa e tukatuka ana.
Kei te kamupene he raina whakangao taputapu hanga mata katoa mai i te paura te whakarite rauemi mata, te hanga pokepokea, te pehi, te pehanga sintering, te huri, te paninga me te paninga i muri i te maimoatanga. Ka arotahi ki te rangahau me te auahatanga o te rauemi turanga, te hanga haehae, te hanga tika me te paninga mata o nga whakaurunga carbide NC, me te whakapai tonu i te mahi miihini, te oranga ratonga me etahi atu waahanga tapahi o nga whakaurunga carbide NC. I muri i te tekau tau o te rangahau pūtaiao me te mahi auaha, kua mohio te kamupene ki te maha o nga hangarau matua motuhake, he R&D motuhake me nga mana hoahoa, a ka taea e ia te whakaputa i nga mahi mo ia kaihoko.