Koho ʻana o nā pahi ʻoki no nā mea ʻoki Metallographic

I ka hoʻohana ʻana i kahi mea ʻoki metallographic kikoʻī e ʻoki i nā ʻāpana hana, pono e koho i nā pahi ʻoki e kūlike me nā waiwai o ka mea hana ma muli o kāna mau mea like ʻole, i mea e loaʻa ai nā hopena ʻoki kūpono. Ma lalo nei, e kūkākūkā mākou i ke koho ʻana o nā pahi ʻoki mai ʻekolu mau manaʻo:

1. Koho ʻana ma muli o nā waiwai o nā mea

1) No nā mea metala e like me ke kila, ka hao, a me nā hui like ʻole, pono e hoʻohana ʻia nā pahi ʻoki i hoʻopaʻa ʻia me ka resin. ʻO ko lākou mānoanoa ma waena o 1-2 mm, kahi kūpono no ka ʻoki pono ʻana i nā mea metala e like me ke kila paʻakikī. Hoʻohana pū ʻia ka Heat-Affected Zone no nā hiʻohiʻona ʻoki pololei e like me ka nānā ʻana i ka metallographic. Eia kekahi, hiki ke hoʻemi maikaʻi ʻia ka pōʻino ʻoki ma ka hoʻoponopono ʻana i ka helu hānai.

2) No nā mea hao ʻole palupalu e like me nā keramika a me ke aniani, pono nā pahi ʻoki daimana. He paʻakikī kiʻekiʻe ko kēia mau pahi a he conductivity wela maikaʻi, hiki ke hōʻemi i ka pilikia o ka hōʻino wela.

3) I loko o nā ʻoihana semiconductor, integrated circuit, a me PCB, hoʻohana nui ʻia nā pahi ʻoki daimana kikoʻī ultra-thin no ka kaohi maikaʻi a me ka nānā ʻana i ka hemahema.

2. Koho ʻana ma muli o nā koi ʻili ʻoki a me nā koi pono

1) Ke ʻole e pono ka hana i ka deformation a me ka maʻemaʻe kiʻekiʻe o ka ʻili, koho i nā pahi ʻoki lahilahi (mānoanoa: 0.3-1.0 mm). Hoʻemi kēia mau pahi i ka papa hōʻino ʻoki a hoʻomaʻalahi i nā kaʻina hana wili ma hope.

2) Ke koi ʻia ka wikiwiki ʻoki a me ka pono kiʻekiʻe, koho i nā pahi ʻoki mānoanoa (mānoanoa: 1.2-3.0 mm). He paʻakikī kiʻekiʻe kēia mau pahi, ʻaʻole maʻalahi e haki, a kūpono no ka ʻoki ʻana i ka nui.

3. Koho ʻana ma muli o ka paʻakikī o ka ʻāpana hana

ʻO ka paʻakikī o ka ʻāpana hana e hoʻoholo pololei i ke koho ʻana o ka mea o ka pahi ʻoki. I kēia manawa, pono e noʻonoʻo i nā koi i ʻōlelo ʻia ma luna no nā pahi lahilahi a mānoanoa paha (ma muli o ka maikaʻi/ka pono o ka ʻili). ʻO ke kiʻekiʻe o ka paʻakikī o ka ʻāpana hana, ʻoi aku ka paʻa a me ka paʻa o ka pahi ʻoki.

1) Nā ʻāpana hana paʻakikī kiʻekiʻe (>HRC 50, e laʻa, kila paʻakikī, carbide sima, kila kalapona kiʻekiʻe)

Nā pahi ʻoki kūpono: Nā pahi ʻoki daimana a i ʻole nā ​​pahi ʻoki cubic boron nitride (CBN)

Mānoanoa i ʻōlelo ʻia: Hāʻawi ʻia ka mea nui i nā pahi mānoanoa (1.2-3.0 mm). Loaʻa iā lākou ke kūpaʻa kiʻekiʻe a me ke kūpaʻa i ka ʻaʻahu ʻana, hiki ke pale i ka nahā ʻana i ka wā ʻoki. Hoʻopilikia pinepine nā ʻāpana hana paʻakikī i nā pahi ʻoki maʻamau, no laila hiki i nā mea kūpaʻa i ka ʻaʻahu ke hōʻoia i ka pono o ka ʻoki ʻana; kūpono ke ʻano mānoanoa no ka ʻoki ʻana i ka ukana kiʻekiʻe.

2) Nā ʻāpana hana paʻakikī waena (HRC 30-50, e laʻa, kila kalapona maʻamau, hao i hoʻolei ʻia, kila kila)

Nā pahi ʻoki kūpono: Nā pahi ʻoki daimana i hoʻopaʻa ʻia me ka resin a i ʻole nā ​​pahi ʻoki alumina kiʻekiʻe

Mānoanoa i ʻōlelo ʻia: Koho maʻalahi - koho i nā pahi lahilahi (0.3-1.0 mm) no ka maʻemaʻe kiʻekiʻe o ka ʻili, a i ʻole nā ​​pahi mānoanoa (1.2-3.0 mm) no ka hana ʻana i ka ʻāpana. Ma muli o ka paʻakikī o ka mea, hiki i nā pahi ʻoki maʻamau ke hoʻokō i nā pono ʻoki, a hiki ke hoʻohālikelike ʻia nā pahi lahilahi/mānoanoa e like me ke ʻano o ka ʻili a i ʻole nā ​​​​koi pono.

3) Nā ʻāpana hana paʻakikī haʻahaʻa (

Nā pahi ʻoki kūpono: Nā pahi ʻoki alumina maʻamau a i ʻole nā ​​pahi ʻoki daimana lahilahi

Mānoanoa i ʻōlelo ʻia: Hāʻawi ʻia ka mea nui i nā pahi lahilahi (0.3-0.8 mm); hiki ke koho ʻia nā pahi 1.0 mm no kekahi mau mea. Hiki i nā ʻāpana hana paʻakikī haʻahaʻa ke hoʻopili a hoʻololi i ke ʻano o ka mea hana; hōʻemi nā pahi ʻoki lahilahi i ka wahi pili, e pale ana i ka hoʻopili ʻana o ka mea hana a me ka hōʻino ʻana o ka mea hana. Ua lawa nā mea pahi ʻoki maʻamau e hoʻokō i nā pono ʻoki.

Nā memo hope loa no ke koho ʻana i ka pahi ʻokiʻoki:

E emi nui ana ka hopena ʻoki a me ke ola lawelawe o nā pahi ʻoki no ke kumu maʻamau ke hoʻohana ʻia ma nā mea kikoʻī.

Pono e koho ʻia ka pahi ʻoki e like me ke ʻano o ka mea ʻoki metallographic e hoʻohana ʻia nei. No ka laʻana, e pale i ka hoʻohana ʻana i nā pahi ʻoki mānoanoa ma nā mea ʻoki mana haʻahaʻa i ka hiki, no ka mea hiki ke hoʻonui maʻalahi i ka mīkini a haki paha ka pahi ʻoki.