He aha ka Thermal Spraying

ʻO ka ʻūhā wela he hui o nā kaʻina hana uhi kahi e hoʻoheheʻe ʻia ai nā mea i hoʻoheheʻe ʻia (a i ʻole wela) ma luna o kahi ʻili i hoʻomākaukau ʻia. Hoʻomaʻamaʻa ʻia ka mea uhi a i ʻole  "feedstock" e ka uila (plasma a i ʻole arc) a i ʻole ke ʻano kemika ('ā ahi). Hiki ke mānoanoa ka uhi ʻana o ka wela (mai ka 20 micrometer a hiki i kekahi mm).

ʻO nā mea hoʻoheheʻe wela wela no nā mea metala, nā ʻāpana, nā seramika, nā plastics, a me nā composites. Hānai ʻia lākou i ka pauka a i ʻole ke ʻano uea, hoʻomehana ʻia i kahi ʻano hoʻoheheʻe a i ʻole semi-molten, a hoʻolalelale ʻia i nā substrates ma ke ʻano o nā ʻāpana micrometer-nui. Hoʻohana mau ʻia ka hoʻoheheʻe ʻana a i ʻole ka hoʻoheheʻe ʻana i ke ahi ma ke ʻano he kumu o ka ikehu no ka pulupulu wela. ʻO ka hopena o nā uhi i hana ʻia e ka hōʻiliʻili ʻana o nā ʻāpana he nui. ʻAʻole hiki ke wela nui ka ʻili, e ʻae ana i ka uhi ʻana o nā mea hiki ke hoʻopau ʻia.

Hoʻoholo pinepine ʻia ka maikaʻi o ka Thermal Spray Coating ma ke ana ʻana i kona porosity, ʻike o ka oxide, macro a me micro-hardness, ikaika paʻa, a me ka ʻeleʻele o ka ʻili. ʻO ka mea maʻamau, piʻi ka maikaʻi o ka uhi ʻana me ka piʻi ʻana o ka velocities particle.

ʻO nā ʻano o ka ʻōpala wela:

1. ʻEhu Plasma (APS)

2. Pu Hopu

3. Uea arc spraying

4. Puhi ahi

5. Kiekie-wikiwiki oxygen wahie (HVOF)

6. Kiʻekiʻe-wikiwiki ea wahie (HVAF)

7. Ehu anu

Nā noi no ka hoʻoheheʻe wela

Hoʻohana nui ʻia nā mea hoʻoheheʻe wela i ka hana ʻana i nā turbines kinoea, nā ʻenekini diesel, nā bearings, nā puke pai, nā ʻōpala, nā mea hoʻoheheʻe, a me nā mea hana ʻaila, a me ka uhi ʻana i nā mea lapaʻau.

ʻO ka hoʻoheheʻe wela he mea ʻokoʻa ia i nā uhi welded arc, ʻoiai ua hoʻohana ʻia ʻo ia ma ke ʻano he ʻokoʻa i nā kaʻina hana ʻē aʻe, e like me ka electroplating, ke kino a me ka hoʻoheheʻe kemika, a me ka implantation ion no nā noi ʻenekinia.

Nā Pōmaikaʻi o ka Hoʻopā ʻana i ka Thermal Spraying

1. Ke koho piha o nā mea hoʻopili: nā metala, nā ʻāpana, nā seramika, nā cermets, carbide, polymers, a me nā plastics;

2. Hiki ke hoʻohana ʻia nā uhi mānoanoa i nā kumukūʻai deposition kiʻekiʻe;

3. Hoʻopaʻa ʻia nā mea hoʻoheheʻe wela wela i ka substrate - hiki ke hoʻopuʻi pinepine i nā mea hoʻoheheʻe i hiki ʻole ke hoʻoheheʻe ʻia me ka substrate;

4. Hiki ke kāpīpī i nā mea i uhi ʻia me kahi mea hoʻoheheʻe kiʻekiʻe ma mua o ka substrate;

5. Hiki ke kāpīpī ʻia ka hapa nui o nā ʻāpana me ka liʻiliʻi a i ʻole ka hoʻomaʻamaʻa mua ʻana a i ʻole ma hope o ka wela, a he liʻiliʻi ka distortion o nā mea;

6. Hiki ke kūkulu hou ʻia nā ʻāpana me ka wikiwiki a me ke kumu kūʻai haʻahaʻa, a maʻamau ma kahi hapa o ke kumukūʻai o kahi pani;

7. Ma ka hoʻohana ʻana i nā mea waiwai no ka uhi ʻana i ka wela, hiki ke hoʻonui ʻia ke ola o nā mea hou;

8. Hiki ke hoʻohana ʻia nā mea hoʻoheheʻe wela ma ka lima a me ka mīkini.