Ihe mkpuchi

** ịdọ aka ná ntị dị mkpa:** Nke a bụ ederede ndekọ akụkọ ihe mere eme, ọ bụghị ọkọlọtọ ugbu a, nkọwa nka ma ọ bụ akwụkwọ ntuziaka. A ga-enyocha akara, akụkụ, nnabata, nhazi ọkwa, adhesives na ụkpụrụ teknụzụ ndị ọzọ dị ka ụkpụrụ ziri ezi si dị, akwụkwọ ndị nrụpụta na ihe achọrọ kpọmkwem.

Ederede a abụghị nkọwa nke ngwaahịa dị iche na onyinye Savo Kusić ugbu a. Ihe a na-enye ugbu a na-elekwasị anya na windo, ọnụ ụzọ na ngwọta metụtara ya.

Ụdị veneer na plywood

E nwere ụdị abụọ nke veneer: ịkpụ na sawn. A na-eji ihe mkpuchi sliced ​​eme ihe maka imepụta plywood maka ọnụ ụzọ, mbadamba ọkwa ọkwa, okpokolo agba, ihe owuwu, arịa ụlọ, wdg.  Plywood nwere steepụ atọ ma ọ bụ karịa nke osisi a kpụchara akpụkọkọta ọnụ nke mere na eriri nke otu n’ime ha na-adaba na eriri nke ndị ọzọ.

A na-eme plywood site na birch, alder, ash, elm, oak, beech, linden, aspen, pine, spruce, cedar na fir. A na-akpọ elu elu nke plywood cladding na nke dị n’ime a na-akpọ etiti. Mgbe ọnụ ọgụgụ nke n’ígwé bụ ọbụna, mgbe ahụ abụọ n’ígwé n’etiti kwesịrị inwe yiri eriri direction. N’ihe gbasara nguzogide mmiri, a na-eme plywood nke ụdị ndị a: FSF plywood nwere ụba mmiri na-eguzogide mmiri, nke a na-ejikọta ya na phenol-formaldehyde ụdị adhesives; FK na FBA - plywood nwere mmiri na-eguzogide mmiri, nke jikọtara ya na carbamide ma ọ bụ albumin casein glues; FB plywood nwere oke nguzogide mmiri, jikọtara ya na gluu protein. Dabere n’ụdị nhazi nke mpempe akwụkwọ elu, plywood nwere ike ịgbanye n’otu akụkụ ma ọ bụ n’akụkụ abụọ na enweghị ájá. A na-enye akụkụ ndị bụ isi nke plywood na tebụl.

Akụkụ plywood

A na-atụle ogologo nke otu mpempe akwụkwọ plywood na ntụziaka nke eriri nke mpempe akwụkwọ dị n’èzí. A na-eme ka plywood sie ike1,5;2,0;2,5;3;4;5;6; 8;9;10na12 mm. Achọpụtala oke kacha nta nke birch na plywood alder1,5 mm, na site na ụdị osisi ndị ọzọ -2,5 m. A na-anabata ngbanwe nke plywood enweghị aja site na ọkpụrụkpụ na mm: Maka ọkpụrụkpụ plywood na mm 

• 1,5; 2,0 na 2,5 - ± 0,2
• 3,0 - ± 0,3
• 4,5 na 6,0 - ± 0,4
• 8,0; 9,0 na 10,0 - ± 0,4 ka 0,5
• 12,0 - ± 0,6

Mgbe sanding plywood, Mbelata nke ọkpụrụkpụ ya n’otu akụkụ (na-eburu n’uche na ekwe deviations) ekwesịghị ịbụ ihe karịrị 0,2 mm, n’akụkụ abụọ 0,4 mm. Dị ka àgwà si dị, a na-eme veneer maka plywood n’ụdị ndị a: A, A1, AB, AB1, B, BB, C. A na-enye data maka nhọrọ nke mpempe akwụkwọ na tebụl. 4.

Nhọrọ nke mpempe akwụkwọ na àgwà nke gluing

Ori osisi dị mkpa ekesara n’ụzọ ihe atụ (dị ka ọkpụrụkpụ nke plywood) kwesịrị ịbụ otu ụdị osisi na nha nhata.

Plywood ga-abụ nke ọma glued, na-enweghị afụ, ọ gaghị delaminate mgbe ehulata. A na-enye ike kachasị mma kwa oyi akwa nke gluu na tebụl.5.  

A na-eme nnyefe nke plywood dị ka akụkụ, klaasị, ụdị, ụdị osisi, ntụziaka nke eriri osisi na mpempe akwụkwọ na usoro nhazi dị ka nkọwa ndị ahịa si dị. A na-enweta plywood akpụkpọ anụ site n’ịgba osisi na igwe pụrụ iche maka ịkwanye plywood ma jiri ya mee ihe dị ka ihe mkpuchi maka ngwaahịa osisi.

Ụdị ịkpụ veneer

A na-ekewa mkpuchi akpụkpọ anụ n’ime radial, semi-radial, tangential na tangential - frontal, nke a na-enweta site na stumps osisi (tab.6).

Dị ka àgwà nke osisi si dị, a na-ekewa plywood na klas atọ: I, II na III. 

Akụkụ, iru mmiri na imecha mma nke veneer

A na-eji osisi oak, beech, ukpa, chub, maple, ash, elm, chestnut, sycamore, Amur velvet, pear, apple, poplar, cherry, acacia, birch, elm na hornbeam mee.

Ogologo radial, ọkara radial na tangential veneers na-esi1,0 mya mere na ọzọ; tangential - ihu - si0,3ya mere na ihe na-abawanye nke0,1 m.

Ọkpụrụkpụ nke veneer bụ maka ụdị se -0,8;1,0;1,2;1,5 mm.

A na-anabata ngbanwe site na akụkụ ọkpụrụkpụ nke enyere iwu (na mm):

• Maka ọkpụrụkpụ veneer 0,8 mm - ± 0,05 
• Maka ọkpụrụkpụ veneer 1,0 mm - ± 0,08
• N’ihi na veneer veneer 1,2 - 1,5 mm - ± 0,1

Iru mmiri nke veneer bụ 10 ± 2%.

N’ihe gbasara àgwà osisi, ihe mkpuchi ahụ aghaghị izute ihe ndị a chọrọ nke ọkọlọtọ dị ugbu a. Ibé mpempe akwụkwọ ga-enwerịrị elu dị larịị dị ọcha, na-enweghị ntụpọ, ncha, mgbawa na ntụpọ ígwè.