Ko te paerewa mō te tirotiro whakarewa o te rino ngāwari te pūtake matua mō te hanga rino ngāwari, te tirotiro kounga hua, me te whakahaere kounga. Ka taea te whakahaere i te tātari whakarewa me te whakamātautau pakeke i runga anō i te paerewa o te ao ISO 945-4:2019 Tirotiro Whakarewa o te Rino Mārō, ā, ko te tukanga e whai ake nei:
I.Te Tapahi me te Tauira:
Ka whakamahia he mīhini tapahi whakarewa mō te tapahi tauira. Ka whakamahia te whakamatao wai puta noa i te tukanga tapahi hei ārai i ngā huringa o te hanganga whakarewa o te tauira i puta mai i ngā tikanga tauira hē. Ina koa, ka taea te whiriwhiri i ngā tauira rerekē o ngā mīhini tapahi whakarewa mō te tapahi me te tauira i runga i te rahi o te tauira me ngā tikanga aunoa e hiahiatia ana.
Tuarua.Tauira Huri me te Oro:
I muri i te tapahi, ka hurihia te tauira (mō ngā mahi koretake, me whakamahi hoki te mīhini whakapiri hei hanga i te tauira) ki runga i te mīhini huri me te whakakanapa tauira whakarewa mā te whakamahi i ngā pepa kirikiri o ngā rahi kirikiri rerekē mai i te matotoru ki te matotoru. E toru, e whā rānei ngā momo pepa kirikiri ka taea te whiriwhiri mō te huri kia rite ki ngā mahi rerekē, ā, me whiriwhiri hoki te tere hurihuri o te mīhini huri me te whakakanapa i runga i te hua.
I muri i te huri pepa kirikiri, ka whakakanapahia te tauira mā te whakamahi i te kakahu whakakanapa me te matū whakakanapa taimana. Ka taea te whakarite i te tere hurihuri o te mīhini huri me te whakakanapa kia rite ki te mea mahi.
III.Whakamātautau Whakarewa:
E ai ki ngā whakaritenga o te GB/T 9441-2021 Metallographic Testing Standard for Ductile Iron, ka tīpakohia he karu hiko whakarewa me te whakanui tika hei tango whakaahua o te hanganga whakarewa i mua me muri i te waikura.
IV.Te Whakamātautau Pakeke o te Rino Maeneene:
Ko te whakamātautau pakeke o te rino ngāwari e ahu mai ana i te paerewa o te ao ISO 1083:2018. Ko te Brinell Hardness (HBW) te tikanga whakamātautau pakeke e pai ana, e pumau ana hoki.
- Ngā Tikanga e Pā Ana
Matotoru Tauira: ≥ 10mm (diameter kōpiko d ≤ 1/5 o te matotoru tauira)
Āhua o te Mata: Ko te taratara o te mata Ra i muri i te tukatuka he ≤ 0.8μm (kāore he unahi, he kōhao onepu, he kōhao pupuhi rānei)
- Ngā Taputapu me ngā Tawhā
| Tūemi Tawhā | Whakaritenga Paerewa (mō te rino ngāwari) | Pūtake |
| Diameter o te Indenter (D) | 10mm (e pai ana) 5mm rānei (mō ngā tauira angiangi) | Whakamahia te 10mm ina ≤ 350 te HBW; whakamahia te 5mm ina neke atu i te 350 te HBW |
| Whakamahia te Kaha (F) | Mō te kōhao 10mm: 3000kgf (29420N); Mō te kōhao 5mm: 750kgf (7355N) | F = 30×D² (tātai pakeke Brinell, kia rite ai te kōhao ki te rahi o te karāpeti) |
| Wā Noho | 10-15 hēkona (15 hēkona mō te matihiko ferritic, 10 hēkona mō te matihiko pearlitic) | Te ārai i te whakarerekētanga o te karapiti kei pā ki te ine i te kōhao |
Wā tuku: Whiringa-ā-rangi 26-2025
