He aha nā hopena o ka inoculation nui o ka hao hao

1. Nā hopena o ka inoculation nui o ka hao hao

1.1 Inā ʻoi aku ka nui o ka inoculation, e kiʻekiʻe ka ʻike silika, a inā ʻoi aku ia ma mua o kahi waiwai, e ʻike ʻia ka brittleness silika. Inā ʻoi aku ka nui o ka ʻike silika hope i ka maʻamau, e alakaʻi pū ia i ka mānoanoa o ka graphite A-type; hiki ke emi a me ka emi, a e piʻi ka nui o ka matrix F; e emi mai ana ka pearlite. Inā nui ka ferrite, e emi ana ka ikaika.

1.2 ʻO ka inoculation nui, akā ʻaʻole ʻoi aku ka nui o ka silicon ma mua o ka maʻamau, maʻalahi e hana i nā lua shrinkage a me ka shrinkage, hoʻomaʻemaʻe ʻia ke ʻano, a hoʻomaikaʻi ʻia ka ikaika.

1.3 Inā nui ka nui o ka inoculation, e emi iho ka ua o ka graphite i ka wā o ke kaʻina hana paʻa, e emi ana ka hoʻonui ʻana o ka hao hao, e hoʻonui ʻia ka nui o nā hui eutectic i ka hānai maikaʻi ʻana, a ʻoi aku ka nui o ka emi ʻana o ka wai, e hopena i ka shrinkage pōʻalo.

1.4 ʻO ka inoculation nui o ka hao nodular e hoʻonui i ka nui o nā pūpū eutectic a hoʻonui i ka manaʻo o ka wehe ʻana, no laila aia ka nui o ka inoculation. Pono e ʻike inā he liʻiliʻi a nui paha ka nui o nā puʻupuʻu eutectic ma lalo o ka metallography, ʻo ia hoʻi, ma lalo o ke kaomi No ke aha e hoʻolohe ai i ka nui o ka inoculum, a ʻo ke kumu o ka nui o ka inoculum o hypereutectic ductile hao e hoʻokumu i ka graphite e lana.

2. ʻO ka hana inoculation o ka hao hao

2.1 ʻO ka hoʻohaʻahaʻa ʻana i ka hao maʻamau ma muli o ka wikiwiki hoʻoluʻu lohi a me ka manawa paʻa lōʻihi, e alakaʻi i ka distortion graphite i waenakonu o ka hoʻolei ʻana, hoʻemi ʻia ka helu o nā pōpō, a me nā pōpō graphite nui. ʻO ka nui o ka magnesium koena, kaohi i ka nui o ke koena o ka honua laha, hoʻohui i nā mea trace, hoʻoikaika i ka inoculation a me nā hana ʻenehana ʻē aʻe.

2.2 I ka inoculating i loko o ductile hao, ka silicon maʻiʻo o ka mua hooheheeia hao mea haʻahaʻa, e hāʻawi iā ʻoe i nā kūlana e hoʻonui i ka inoculation. ʻOkoʻa paha ka nui o ka inoculation i hoʻohui ʻia e nā kānaka like ʻole. Pono wale nō, akā ʻaʻole lawa.

3. Ka nui o ka inoculant i hookomoia i ka hao

3.1 ʻO ke kuleana o ka inoculant: hoʻoikaika i ka graphitization, hoʻomaikaʻi i ka hāʻawi ʻana i ke ʻano a me ka nui o ka graphite, hoʻemi i ka manaʻo o ke keʻokeʻo, a hoʻonui i ka ikaika.

3.2 ʻO ka nui o ka inoculant i hoʻohui ʻia: 0.3% i loko o ka ʻeke, 0.1% i ka mold, 0.4% i ka huina.