NO791849L - PROCEDURE FOR AA PREPARING ROUND AND EDGE TIMES FOR DRYING - Google Patents
PROCEDURE FOR AA PREPARING ROUND AND EDGE TIMES FOR DRYINGInfo
- Publication number
- NO791849L NO791849L NO791849A NO791849A NO791849L NO 791849 L NO791849 L NO 791849L NO 791849 A NO791849 A NO 791849A NO 791849 A NO791849 A NO 791849A NO 791849 L NO791849 L NO 791849L
- Authority
- NO
- Norway
- Prior art keywords
- drying
- wood
- procedure
- treatment
- round timber
- Prior art date
Links
- 238000001035 drying Methods 0.000 title claims description 18
- 238000000034 method Methods 0.000 title claims description 8
- 239000002023 wood Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 6
- 238000002203 pretreatment Methods 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims description 2
- 239000011162 core material Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010875 treated wood Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Description
Fremgangsmåte ved behandling av rundtømmer og skurlast forut for tørkebehandling. Procedure for treating round timber and scrap before drying.
Foreliggende oppfinnelse angår en fremgangsmåte for behandling av rundtømmer og skurlast for å hindre at det oppstår skade under tørkebehandlingen. The present invention relates to a method for treating round timber and scrap to prevent damage occurring during the drying treatment.
For tørking av forskjellige tresorter er det hittil bare be-nyttet skåret tre, som f.eks. rundtømmer eller bord og planker, som forut for tørkebehandlingen er impregnert med en gass. Videre ble bordene lagt kryssvis med tilsvarende innbyrdes avstand idet luft eller annet gassformet medium ble blåst gjennom mellomrommene. Until now, only cut wood has been used for drying different types of wood, such as e.g. round timber or boards and planks, which are impregnated with a gas prior to the drying treatment. Furthermore, the tables were placed crosswise with a corresponding distance from each other as air or other gaseous medium was blown through the spaces.
I sin alminnelighet ble imidlertid bare forbehandlet treverk underkastet tørkebehandling, idet det med uttrykket "forbehandlet" her skal forstås at bare tilskåret og/eller avbarket rundtømmer henholdsvis bord underkastes tørking. In general, however, only pre-treated wood was subjected to drying treatment, as the term "pre-treated" is to be understood here as meaning that only cut and/or debarked round timber or boards are subjected to drying.
En ulempe ved tidligere praksis består i at treverket som følge av at det oppstår indre spenninger under tørkingen får sprekker og at det derfor fås en forholdsvis stor vrakprosent. Dette innebærer en vesentlig fordyrelse idet vrak-materialet jo må innkalkuleres i prisen. A disadvantage of previous practice consists in the fact that the wood cracks as a result of internal stresses arising during drying, and that there is therefore a relatively large percentage of scrap. This entails a significant increase in price as the scrap material must be factored into the price.
For å hindre at de nevnte ulemper skal oppstå angir foreliggende oppfinnelse en fremgangsmåte for forberedelse av rund-tømmer og skurlast for tørkebehandling derav, hvor kjerne-materialet, etter at barken er fjernet, fjernes i lengde-retningen, f.eks. ved en aksial utboring eller fresing, idet diameteren på det utborede eJLler utfresede parti står i et bestemt forhold til de ytre dimensjoner på rundtømmeret henholdsvis skurlasten. In order to prevent the aforementioned disadvantages from occurring, the present invention specifies a method for preparing round timber and scrap for drying treatment thereof, where the core material, after the bark has been removed, is removed in the longitudinal direction, e.g. by axial drilling or milling, as the diameter of the drilled or milled part is in a specific relationship to the outer dimensions of the round timber or the scour load.
Den mest vesentlige fordel ved foreliggende oppfinnelse ligger i at de indre spenninger som følge av tørkingen underbindes ved at kjerneveden er fjernet og at det oppstår hverken noen aksial eller noen radial forvridning idet tørkemediet, f.eks. luft eller gass, kan føres gjennom aksialboringen, mens tørkemediet samtidig stryker over den fullstendige ytre overflate av trematerialet. The most significant advantage of the present invention is that the internal stresses resulting from drying are reduced by the heartwood being removed and that neither axial nor radial distortion occurs as the drying medium, e.g. air or gas, can be passed through the axial bore, while the drying medium simultaneously sweeps over the complete outer surface of the wood material.
Vanninnholdet i trematerialet vil derved trekkes ut både gjennom den ytre overflate og innenfra (gjennom boringen) ved hjelp av tørkemediet og bragt til fordamping. The water content in the wood material will thereby be extracted both through the outer surface and from the inside (through the bore) with the help of the drying medium and brought to evaporation.
En ytterligere fordel ved oppfinnelsen består i at tørketiden reduseres vesentlig og samtidig oppnås det en mer jevn tørking av treverket. Ved den forbehandling som er foreslått er det mulig å redusere tørketiden meget vesentlig, hvorved omkost-ningene også reduseres. Dertil kommer at det oppnås et fullstendig spenningsfritt og ikke-beskadiget, fullstendig uttørket trevirke. A further advantage of the invention is that the drying time is significantly reduced and at the same time a more even drying of the wood is achieved. With the pre-treatment that has been proposed, it is possible to reduce the drying time very significantly, whereby the costs are also reduced. In addition, a completely stress-free and undamaged, completely dried wood is obtained.
Ved bruk av forbehandlingsmetoden i henhold til oppfinnelsen er det også mulig å legge trelasten i lag med mindre innbyrdes mellomrom hvorved det vil spares plass, idet tørkemediet strømmer ikke bare langs de ytre overflater av trematerialet men også gjennom boringene. When using the pre-treatment method according to the invention, it is also possible to lay the wood load in layers with smaller spaces between them, which will save space, as the drying medium flows not only along the outer surfaces of the wood material but also through the bores.
Videre er det mulig - fra rundtømmer av en gitt dimensjon -Furthermore, it is possible - from round timber of a given dimension -
å fremskaffe en vesentlig større mengde bord enn det var mulig med de tidligere kjente metoder uten forbehandlingen i henhold til oppfinnelsen. to produce a significantly larger quantity of boards than was possible with the previously known methods without the pre-treatment according to the invention.
Ved bruk av fremgangsmåten i henhold til oppfinnelsen oppnås en kvalitetsforbedring, idet mindreverdig trevirke, f.eks. trevirke for fyring, ved videreforedling kan vinnes som høyverdig trevirke for møbelindustrien o.l. Videre oppnåes en optisk penere overflate på treverket. When using the method according to the invention, a quality improvement is achieved, as inferior wood, e.g. wood for fuel, by further processing can be obtained as high-quality wood for the furniture industry, etc. Furthermore, an optically nicer surface is achieved on the wood.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0353979A AT383304B (en) | 1979-05-14 | 1979-05-14 | METHOD FOR PREPARING ROUND OR QUANTITY WOOD FOR THE DRYING PROCESS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO791849L true NO791849L (en) | 1980-11-17 |
Family
ID=3551906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO791849A NO791849L (en) | 1979-05-14 | 1979-06-05 | PROCEDURE FOR AA PREPARING ROUND AND EDGE TIMES FOR DRYING |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS55152376A (en) |
| AT (1) | AT383304B (en) |
| CA (1) | CA1129681A (en) |
| DD (1) | DD144304A1 (en) |
| FI (1) | FI791791A7 (en) |
| HU (1) | HU178814B (en) |
| NO (1) | NO791849L (en) |
| PL (1) | PL217550A1 (en) |
| YU (1) | YU130479A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2821581A1 (en) * | 2001-03-01 | 2002-09-06 | Menuiserie Ebenisterie Amedee | Method for preparing solid wooden parts before drying comprises making channel along long fiber axis so as to modify natural fiber organization |
| CN102699972A (en) * | 2012-06-13 | 2012-10-03 | 荣玉石 | Method for preparing log sectional material with drying method |
| CN103009447A (en) * | 2012-12-06 | 2013-04-03 | 嘉善县魏塘镇永兴工艺品厂 | Log cracking prevention method |
| CN103522376B (en) * | 2013-10-29 | 2015-09-02 | 内蒙古农业大学 | A kind of Log high-pressure vacuum treatment device and method |
| CH713511B1 (en) | 2017-02-28 | 2022-07-15 | Meister Thomas | Process and device for drying logs. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5040226U (en) * | 1973-08-06 | 1975-04-24 |
-
1979
- 1979-05-14 AT AT0353979A patent/AT383304B/en not_active IP Right Cessation
- 1979-06-04 YU YU01304/79A patent/YU130479A/en unknown
- 1979-06-04 FI FI791791A patent/FI791791A7/en not_active Application Discontinuation
- 1979-06-05 NO NO791849A patent/NO791849L/en unknown
- 1979-06-15 DD DD79213658A patent/DD144304A1/en unknown
- 1979-07-27 HU HU79LE841A patent/HU178814B/en unknown
- 1979-08-03 PL PL21755079A patent/PL217550A1/xx unknown
- 1979-08-29 JP JP11016179A patent/JPS55152376A/en active Pending
- 1979-11-14 CA CA339,813A patent/CA1129681A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| YU130479A (en) | 1982-10-31 |
| AT383304B (en) | 1987-06-25 |
| FI791791A7 (en) | 1981-01-01 |
| CA1129681A (en) | 1982-08-17 |
| DD144304A1 (en) | 1980-10-08 |
| HU178814B (en) | 1982-06-28 |
| ATA353979A (en) | 1982-06-15 |
| JPS55152376A (en) | 1980-11-27 |
| PL217550A1 (en) | 1981-05-08 |
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