CN101762139A - High-temperature lumber convective treatment method for balancing lumber moisture content - Google Patents
High-temperature lumber convective treatment method for balancing lumber moisture content Download PDFInfo
- Publication number
- CN101762139A CN101762139A CN200810230064A CN200810230064A CN101762139A CN 101762139 A CN101762139 A CN 101762139A CN 200810230064 A CN200810230064 A CN 200810230064A CN 200810230064 A CN200810230064 A CN 200810230064A CN 101762139 A CN101762139 A CN 101762139A
- Authority
- CN
- China
- Prior art keywords
- lumber
- kiln
- hours
- temperature
- timber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Drying Of Solid Materials (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention relates to a high-temperature wood convective treatment method for balancing lumber moisture content. The adopted technical scheme includes that lumber pieces are bonded and stored for over 72 hours in natural conditions; the naturally dried lumber pieces are piled in layers in a steam lumber drying furnace, stripped cushions are put in parallel on each layer of lumber, the lumber pieces are erected in the middle space of the furnace, the lumber volume takes up 60 percent of the cubage of the steam lumber drying furnace; the furnace is heated and the temperature is kept under 50-55 degrees Celsius to dry the lumber for 48 hours and moisture is discharged once every four hours; the furnace temperature is kept under 60-65 degrees Celsius for 36 hours to dry the lumber and moisture is discharged once every six hours; the furnace temperature is kept under 70-80 degrees Celsius for 24 hours to dry the lumber and moisture is discharged once every eight hours; the steam lumber drying furnace is stopped for 3-5 hours after drying for 10-14 hours; the furnace is cooled down and the temperature of the lumber being taken out of the furnace is controlled. The invention guarantees the moisture content difference between every two lumber pieces within 1 percent and prevents lumber from shrinkage, cave-in, warp, distortion and cracking in a long period; the woodwork produced by the invention has stable quality and long service life.
Description
Technical field
The present invention relates to the method for drying wood field, the timber method is handled in the high-temperature gas convection current that particularly relates to the balance moisture content.
Background technology
Along with improving constantly of drying of wood technology, artificial steam drying technology has obtained using widely.But its weak point is the woodwork that gummed is made, service time one is of a specified duration, be prone to subside, quality problems such as warpage, distortion, cracking, influence the attractive in appearance and serviceability of product, its main cause: the one,, the timber ubiquity moisture content of existing artificial steam drying of wood technology processing is variant; To exceed 5～10% at the moisture content of dry kiln middle part than the timber at dry kiln top, than dry kiln bottom low about 10%, upper and lower moisture content is the highest to differ about 20%, in case behind the gummed, service time one is of a specified duration, when indoor air humidity was lower than moisture content numerical value, the contained water evaporates of timber was fallen, and can cause subsiding behind the wood shrinkage; The 2nd,, at present the wooden gummed of forest product industry generally selects for use is the water-based binder, the gummed back, is kept away in the unavoidable moisture entrapment timber body because of wooden gummed dry run time weak point by timber self suction and external normal temperature air dry, cause lumber fibre to expand, subside behind the drying shrinkage; The 3rd,, the moisture absorption of the warp of timber, plain-sawed lumber and coefficient of shrinkage difference mutually about 3 times, easily the subsiding, be out of shape, ftracture after mixing the gummed drying shrinkage that is stitched together of timber through, plain-sawed lumber; The 4th,, timber grows at nature, geographical environment difference because of growth, arboreal growth morning the late wood and lumber fibre density different, the moisture content and the moisture absorption are all variant in going into worker's steam drying and gummed process, subside behind time one wood shrinkage of a specified duration, warpage, distortion.With the timber of this type of artificial steam drying technology processing, the easy drying shrinkage of product that gummed is made subsides, warpage, distortion, cracking, so carefully make furniture and decorations are used.
Summary of the invention
In order to address the above problem, it is unbalanced to the invention provides behind a kind of difference that can eliminate dry back moisture content and the wood gluing between the inside and outside and timber of body moisture content, prevent to subside, be out of shape, ftracture, the timber method is handled in the high-temperature gas convection current of stay-in-grade balance moisture content.
To achieve these goals, the technical solution used in the present invention is: the timber method is handled in a kind of high-temperature gas convection current of balance moisture content, comprises the steps:
A, air dry: after wood gluing processing, in natural free from dampness environment, deposit naturally more than 72 hours;
B, stacking: the timber layering after the air dry stacked and frame in the steam lumber kiln that is provided with moisture exhausting port and commutation blower fan, horizontal parallel is put filler strip on every layer of timber, the timber of stacking is erected at middle part in the kiln, and the timber measurement of stacking accounts for 60% of steam lumber kiln volume;
C, heat and hydrofuge: make in the steam lumber kiln by hot air apparatus and steam heat abstractor and heat up, the kiln temperature rise was opened the moisture exhausting port hydrofuge once to 50-55 ℃ of insulation oven dry 48 hours every 4 hours; Rise the kiln temperature again to 60-65 ℃ of insulation oven dry 36 hours, once every 6 hours hydrofuges; Rise the kiln temperature again to 70-80 ℃ of insulation oven dry 24 hours, every 8 hours hydrofuges once, the steam lumber kiln is whenever dried to be needed to shut down 3～5 hours in 10～14 hours;
D, kiln discharge: stop to heat, cooling, control timber kiln discharge temperature,
Summer: kiln discharge when steam lumber kiln, kiln temperature are not higher than 10 ℃ of kiln external environment temperature;
Spring and autumn: kiln discharge when steam lumber kiln, kiln temperature are not higher than 15 ℃ of kiln external environment temperature;
Winter: kiln discharge when steam lumber kiln, kiln temperature are not higher than 20 ℃ of kiln external environment temperature.
Stacking step, in 200mm, timber is stacked overall height and is no more than 2000mm at interval for the filler strip that horizontal parallel is put on every layer of timber, filler strip;
The above-mentioned steam lumber kiln that is provided with moisture exhausting port and commutation blower fan, the commutation blower fan is the two-way or unidirectional blower fan that commutates in opposite directions.
The invention has the beneficial effects as follows:
1, because now wood gluing generally selects for use is the water-based binder, the gummed back, because of natural drying process time weak point thereby is kept away in the unavoidable moisture entrapment timber body by timber self suction and external normal temperature air dry.The present invention is after air dry, and is further dry again.Timber after the artificial steam drying is stacked, be erected at middle part in the dry kiln body, the timber measurement of stacking accounts for 60% of steam lumber kiln volume, on making in the kiln, down, a left side, volume space is all left on the right side, the timber that layering is stacked, horizontal parallel is put filler strip on every layer of timber, in the 200mm of filler strip interval, timber is stacked in the limit for height degree 2000mm, like this, make by filler strip and to leave the gaseous exchange space between the two-layer timber, realize that by the commutation blower fan hot-air forces to pass through in this space convection current, make in the dry kiln on, in, the drying of wood condition of upper/lower positions is consistent, and has avoided on the moisture content, down poor.Through the timber of method drying of the present invention, the difference of timber monolithic moisture content and then has been avoided subsiding behind the drying shrinkage in 1%.
2, the warp of timber, the plain-sawed lumber moisture absorption and coefficient of shrinkage difference is about 3 times, and timber is carrying out drying with method of the present invention after mixing and piecing together gummed, and the difference of timber monolithic moisture content has been avoided subsiding behind the drying shrinkage, warpage and distortion in 1% equally;
3, the present invention is because behind wood gluing, digs, before the sanding processing, carries out secondary artificial drying technology, promptly adopts high-temperature gas to method for stream processing, upgrades and filled up blank in the timber artificial drying technical field, improved the quality of the product of forest product industry.
The specific embodiment
The timber method is handled in the high-temperature gas convection current of balance moisture content, comprises the steps:
A, normal temperature air dry:
After the processing of pending horizontal jigsaw (integrated timber or solid wooden floor board or solid wooden compound floor or core-board plate core or furniture parts) gummed, in natural environment (free from dampness environment), naturally deposit more than 72 hours, make the moisture content that is deposited in together reach dynamic equilibrium naturally, reduce moisture content difference.
B, stacking:
Timber layering after the normal temperature air dry balance stacked and frame in the steam lumber kiln that is provided with moisture exhausting port and commutation blower fan, the timber of stacking is erected at middle part in the kiln, the timber measurement of stacking accounts for 60% of steam lumber kiln volume, on making in the kiln, down, a left side, volume space is all respectively left on the right side, horizontal parallel is put filler strip on every layer of timber, the filler strip that horizontal parallel is put in each layer will be controlled in the 200mm at interval, timber is stacked in the limit for height degree 2000mm, the timber of stacking standard filler strip end socket, to go up, following alignment, prevent that timber at high temperature is out of shape, the termination cracking, make by filler strip and to leave the gaseous exchange space between the two-layer timber, realize that by the commutation blower fan hot-air forces to pass through in this space convection current.
Commutation blower fan in the steam lumber kiln adopts two-way commutation blower fan.The timber of being stacked is the timber of single seeds, and the made protective layer of bedding timber is wanted in the timber above and below after stacking, and wants smooth compacting above it, in case the timber after handling is out of shape, variable color.
C, heat and hydrofuge:
Make in the steam lumber kiln by hot air apparatus and steam heat abstractor and to heat up, the kiln temperature rise was opened the moisture exhausting port hydrofuge once to 50-55 ℃ of insulation oven dry 48 hours every 4 hours; Rise the kiln temperature again to 60-65 ℃ of insulation oven dry 36 hours, once every 6 hours hydrofuges; Rise the kiln temperature again to 70-80 ℃ of insulation oven dry 24 hours, once every 8 hours hydrofuges.
The steam lumber kiln is whenever dried to be needed to shut down 4 hours in 12 hours, was the dynamic natural balanced state processing time of balancing water content of wood treatment technology, in case timber implosion and plate face cracking take place.
D, kiln discharge:
Stop to heat cooling, control timber kiln discharge temperature.
Summer: kiln discharge when steam lumber kiln, kiln temperature are not higher than 10 ℃ of kiln external environment temperature;
Spring and autumn: kiln discharge when steam lumber kiln, kiln temperature are not higher than 15 ℃ of kiln external environment temperature;
Winter: kiln discharge when steam lumber kiln, kiln temperature are not higher than 20 ℃ of kiln external environment temperature.
Claims (3)
1. the timber method is handled in the high-temperature gas convection current of a balance moisture content, it is characterized in that comprising the steps:
A, air dry: after wood gluing processing, in natural environment, deposit naturally more than 72 hours;
B, stacking: the timber layering after the air dry stacked and frame in the steam lumber kiln that is provided with moisture exhausting port and commutation blower fan, horizontal parallel is put filler strip on every layer of timber, the timber of stacking is erected at middle part in the kiln, and the timber measurement of stacking accounts for 60% of steam lumber kiln volume;
C, heat and hydrofuge: make in the steam lumber kiln by hot air apparatus and steam heat abstractor and heat up, the kiln temperature rise was opened the moisture exhausting port hydrofuge once to 50-55 ℃ of insulation oven dry 48 hours every 4 hours; Rise the kiln temperature again to 60-65 ℃ of insulation oven dry 36 hours, once every 6 hours hydrofuges; Rise the kiln temperature again to 70-80 ℃ of insulation oven dry 24 hours, every 8 hours hydrofuges once, the steam lumber kiln is whenever dried to be needed to shut down 3～5 hours in 10～14 hours;
D, kiln discharge: stop to heat, cooling, control timber kiln discharge temperature,
Summer: kiln discharge when steam lumber kiln, kiln temperature are not higher than 10 ℃ of kiln external environment temperature;
Spring and autumn: kiln discharge when steam lumber kiln, kiln temperature are not higher than 15 ℃ of kiln external environment temperature;
Winter: kiln discharge when steam lumber kiln, kiln temperature are not higher than 20 ℃ of kiln external environment temperature.
2. the timber method is handled in the high-temperature gas convection current of balance moisture content according to claim 1, it is characterized in that: stacking step, in 200mm, timber is stacked overall height and is no more than 2000mm at interval for the filler strip that horizontal parallel is put on every layer of timber, filler strip.
3. the timber method is handled in the high-temperature gas convection current of balance moisture content according to claim 1, it is characterized in that the described steam lumber kiln that is provided with moisture exhausting port and commutation blower fan, and the commutation blower fan is the two-way or unidirectional blower fan that commutates in opposite directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810230064A CN101762139A (en) | 2008-12-23 | 2008-12-23 | High-temperature lumber convective treatment method for balancing lumber moisture content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810230064A CN101762139A (en) | 2008-12-23 | 2008-12-23 | High-temperature lumber convective treatment method for balancing lumber moisture content |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101762139A true CN101762139A (en) | 2010-06-30 |
Family
ID=42493445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810230064A Pending CN101762139A (en) | 2008-12-23 | 2008-12-23 | High-temperature lumber convective treatment method for balancing lumber moisture content |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101762139A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172934A (en) * | 2011-01-29 | 2011-09-07 | 广东省宜华木业股份有限公司 | Rotary drying method for timbers |
| CN104501542A (en) * | 2013-12-11 | 2015-04-08 | 融安华海木业有限公司 | Method for rapidly drying small-size fir board strips |
| CN104654742A (en) * | 2014-06-11 | 2015-05-27 | 梁未 | Method for drying plates |
| CN104669375A (en) * | 2015-03-27 | 2015-06-03 | 广西南宁侨盛木业有限责任公司 | Natural drying method for wooden cores |
| CN105043015A (en) * | 2015-05-29 | 2015-11-11 | 柳州市东汇木业有限公司 | Drying method of eucalyptus core for manufacturing decorative plate |
| CN105674699A (en) * | 2016-02-02 | 2016-06-15 | 安徽恒昊科技有限公司 | Technological method for rapid high-humidity drying and sterilization |
| CN106288689A (en) * | 2016-09-22 | 2017-01-04 | 四川南格尔生物科技有限公司 | A kind of drying room drying system and product furnace drying method |
| CN106369938A (en) * | 2016-11-07 | 2017-02-01 | 广西南宁侨盛木业有限责任公司 | Drying method for fast-growing eucalyptus sawn timber |
| CN109629694A (en) * | 2018-12-09 | 2019-04-16 | 常德湘联木业有限公司 | A kind of waterproof log cabin and preparation method thereof based on assembled mortise-tenon joint technique |
| CN110006954A (en) * | 2019-03-12 | 2019-07-12 | 黄劻湛 | A kind of moisture content gradient of wood test sensor using the anti-down mistake of piezoelectricity |
| CN110173964A (en) * | 2019-05-23 | 2019-08-27 | 安徽繁盛木业包装有限公司 | A kind of lumber kiln |
| CN113715129A (en) * | 2021-09-01 | 2021-11-30 | 中国热带农业科学院橡胶研究所 | Method for producing root carving and wood pier by using rubber tree log and tree root material |
-
2008
- 2008-12-23 CN CN200810230064A patent/CN101762139A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172934A (en) * | 2011-01-29 | 2011-09-07 | 广东省宜华木业股份有限公司 | Rotary drying method for timbers |
| CN102172934B (en) * | 2011-01-29 | 2013-12-11 | 广东省宜华木业股份有限公司 | Rotary drying method for timbers |
| CN104501542A (en) * | 2013-12-11 | 2015-04-08 | 融安华海木业有限公司 | Method for rapidly drying small-size fir board strips |
| CN104654742A (en) * | 2014-06-11 | 2015-05-27 | 梁未 | Method for drying plates |
| CN104669375A (en) * | 2015-03-27 | 2015-06-03 | 广西南宁侨盛木业有限责任公司 | Natural drying method for wooden cores |
| CN105043015A (en) * | 2015-05-29 | 2015-11-11 | 柳州市东汇木业有限公司 | Drying method of eucalyptus core for manufacturing decorative plate |
| CN105674699A (en) * | 2016-02-02 | 2016-06-15 | 安徽恒昊科技有限公司 | Technological method for rapid high-humidity drying and sterilization |
| CN105674699B (en) * | 2016-02-02 | 2018-04-20 | 安徽恒昊科技有限公司 | A kind of process of quick high humidity dry sterilization |
| CN106288689A (en) * | 2016-09-22 | 2017-01-04 | 四川南格尔生物科技有限公司 | A kind of drying room drying system and product furnace drying method |
| CN106369938A (en) * | 2016-11-07 | 2017-02-01 | 广西南宁侨盛木业有限责任公司 | Drying method for fast-growing eucalyptus sawn timber |
| CN109629694A (en) * | 2018-12-09 | 2019-04-16 | 常德湘联木业有限公司 | A kind of waterproof log cabin and preparation method thereof based on assembled mortise-tenon joint technique |
| CN110006954A (en) * | 2019-03-12 | 2019-07-12 | 黄劻湛 | A kind of moisture content gradient of wood test sensor using the anti-down mistake of piezoelectricity |
| CN110173964A (en) * | 2019-05-23 | 2019-08-27 | 安徽繁盛木业包装有限公司 | A kind of lumber kiln |
| CN113715129A (en) * | 2021-09-01 | 2021-11-30 | 中国热带农业科学院橡胶研究所 | Method for producing root carving and wood pier by using rubber tree log and tree root material |
| CN113715129B (en) * | 2021-09-01 | 2022-07-19 | 中国热带农业科学院橡胶研究所 | Method for producing root carving and wood pier by using rubber tree log and tree root material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101762139A (en) | High-temperature lumber convective treatment method for balancing lumber moisture content | |
| CN103017485B (en) | A kind of timber hot and humid rapid draing process | |
| CN100418715C (en) | Production method of carbonizing wood floor board | |
| CN102229162B (en) | Balance humidifying technology method of artificial board | |
| CN100500401C (en) | High temperature water heat processing method for timber | |
| CN105690512A (en) | Production method for high-temperature heat treatment of bamboo bunch | |
| CN103481348A (en) | Integral reinforced solid wood section bar and manufacturing method thereof | |
| CN107486915A (en) | A kind of production technology of two layer solid wood floors of floor heating | |
| CN103932375A (en) | Nine-step loose-leaf bulk curing technique for tobacco | |
| CN106938486A (en) | A kind of processing method of redwood timber | |
| CN105235040A (en) | Processing method of solid wood floor blanks used for floor heating | |
| CN1676044A (en) | Scattered leaf stacked tobacco-roasting house and its leaf roasting method | |
| CN105475525A (en) | Prophyll black brick tea and making method thereof | |
| CN102068028B (en) | Intensive curing barn baking process for airflow alternate-operation flue-cured tobacco | |
| CN107186850A (en) | A kind of preparation method of heat modification floor heating solid wooden floor board blank | |
| CN106546069A (en) | A kind of timber can batch drying meanss | |
| CN106871593A (en) | A kind of timber active drying means | |
| CN104501542A (en) | Method for rapidly drying small-size fir board strips | |
| CN111660388A (en) | Wood balance health preserving method | |
| CN214490932U (en) | Timber health preserving room | |
| CN101726162A (en) | Method for balancing water content of wood and high-temperature gas convection drying kiln thereof | |
| CN114311203A (en) | Water content control method for solid wood furniture production process | |
| CN112856939A (en) | Medium temperature heat treatment method for floor timber | |
| CN207600098U (en) | A kind of novel timber storage rack | |
| CN205368306U (en) | Distiller's yeast fermenting cellar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100630 |