Nā māka lāʻau lāʻau Baltic birch (nā māka B, BB, CP, C)

Hoʻoholo ʻia ka pae o ka plywood baltic birch ma muli o nā hemahema e like me nā knots (nā puʻupuʻu ola, nā puʻupuʻu make, nā puʻupuʻu leaking), palaho (palapala puʻuwai, pala sapwood), nā maka pepeke (nā maka pepeke nui, nā maka pepeke liʻiliʻi, nā ʻōpala epidermal insect), nā māwae (ma nā māwae, ʻaʻole ma nā māwae), ke kulou (kūlou ʻana, ke kulou pololei, ke kuʻi ʻana, ke kulou ʻana o ka ʻaoʻao hoʻokahi, ka piko ʻaoʻao lehulehu), ka palaoa wili, nā ʻeha o waho, nā ʻaoʻao blunt, etc., ma muli o ke alo, ka nui, a me ka nui. o keia mau hemahema.ʻOiaʻiʻo, ma muli o nā ʻokoʻa o nā ʻano mea (ka hoʻohana pololei ʻana i nā lāʻau, nā lāʻau sawn, nā lāʻau ʻili, a me nā mea ʻē aʻe), nā kumu (ma ka home a i lawe ʻia mai paha), a me nā kūlana (nā kūlana aupuni a ʻoihana paha), aia nā lula like ʻole.Eia kekahi laʻana, aia nā māka I, II, a me III, a me nā māka A, B, a me C, a pēlā aku.No ka ʻike hohonu ʻana i kēia ʻike, e ʻoluʻolu e nānā i nā kūlana lāʻau kūpono a i ʻole nā ​​​​mea hana.

ʻO ka lāʻau lāʻau baltic birch i hoʻokaʻawale ʻia i ka Papa B, BB, CP, a me C. Penei ka loiloi:

Papa B

Nā hiʻohiʻona o ka lāʻau baltic birch veneer maoli:

ʻAe ʻia nā puʻupuʻu māmā me ke anawaena kiʻekiʻe o 10 millimeters;Ua ʻae ʻia ka nui o 8 knots no ka mika square, me ke anawaena ʻaʻole iʻoi aku ma mua o 25mm;

No nā nodes me nā māwae a i ʻole nā ​​puʻupuʻu i wehe ʻia, inā ʻoi aku ko lākou anawaena ma lalo o 5 millimeters, ʻaʻole i kaupalena ʻia ka helu;

No nā puʻupuʻu ʻāhaʻi a ʻāpana paha me ke anawaena o ʻoi aku ma mua o 5 millimeters, ʻae ʻia ka nui o 3 nodes no ka mika square.ʻAʻole ʻae ʻia ka hāʻule ʻana o 3 knots no kēlā me kēia mika square, a ʻaʻole ʻae ʻia nā wahi ʻeleʻele;ʻAʻole ʻae ʻia nā māwae a me nā mea kumu.

Nā hiʻohiʻona pae hana:

ʻAʻole ʻae ʻia ka paʻi ʻana, ʻaʻole ʻae ʻia ka paʻi pālua, ʻaʻole ʻae ʻia ka paʻi putty, ʻaʻole ʻae ʻia ka pollution hana, a ʻaʻole ʻae ʻia ka splicing.

Papa BB

Nā hiʻohiʻona o ka lāʻau baltic birch veneer maoli:

ʻAe ʻia nā puʻupuʻu ʻeleʻele a ʻulaʻula paha me ke anawaena kiʻekiʻe o 10mm: ʻaʻole i ʻoi aku ma mua o 20 knots me ke anawaena o 25mm a i ʻole ka liʻiliʻi. ʻO nā puʻupuʻu make hāmama a semi hāmama paha me ke anawaena o lalo o 15mm.E ʻae i 3 wehe a hāmama paha nā puʻupuʻu make i kēlā me kēia mika square.Natural ʻokoʻa kala kala ma lalo o 50% papa. ʻAʻole iʻoi aku ka lōʻihi ma mua o 250 millimeters e loaʻa iā 5 mau māwae no 1.5 mika.

Nā hiʻohiʻona pae hana:

ʻAʻole ʻae ʻia ka paʻi pālua, ka paʻi putty, ka hana ʻana i nā ʻili, a me ka splicing.

ʻO ka palena o ka helu o nā pākuʻi e like me ka helu o nā pālima i ʻōlelo ʻia ma luna.

Papa CP

Nā hiʻohiʻona o ka lāʻau baltic birch veneer maoli:

ʻAe nā wili:

ʻAʻole ʻoi aku ka nui o ka māwae ma mua o 1.5mm:

ʻAe ʻia nā puʻupuʻu make hāmama a i ʻole semi open: ʻaʻohe palena i ka helu o nā puʻupuʻu make wehe me ke anawaena o lalo o 6 millimeters. ʻaʻole ʻoi aku ma mua o 2 millimeters a ʻaʻole i ʻoi aku ka lōʻihi ma mua o 600 millimeters.

Nā hiʻohiʻona pae hana:

ʻAʻole ʻae ʻia ka hoʻopili ʻana i ka putty, ka hana ʻana i nā stains, a me ka splicing.

ʻO nā puʻupuʻu make a pau me ke anawaena ʻoi aʻe ma mua o 6mm pono e hoʻopaʻa ʻia a ʻae ʻia ka paʻi pālua.

Papa C:

Nā hiʻohiʻona o ka lāʻau birch maoli:

ʻAe ʻia nā puʻupuʻu ʻeleʻele a māmā;

Ua ʻae ʻia nā deadlocks hāmama a semi wehe paha;ʻAʻole hiki ke hoʻohana ʻia nā puka ma hope o ka hāʻule ʻana o nā puʻupuʻu make symmetrical no ka ʻāpana o waho.

Nā hiʻohiʻona pae hana:

ʻAʻole ʻae ʻia ka splicing, hiki ke hoʻohana ʻia nā goosebumps ma ka ʻili me ka ʻole o ka sila ʻana, a ʻae ʻia ka hoʻohaumia ʻana o ka hui hana.