CN107891494A - It is a kind of to sheet material timber profound level heat-treating methods - Google Patents
It is a kind of to sheet material timber profound level heat-treating methods Download PDFInfo
- Publication number
- CN107891494A CN107891494A CN201711212365.0A CN201711212365A CN107891494A CN 107891494 A CN107891494 A CN 107891494A CN 201711212365 A CN201711212365 A CN 201711212365A CN 107891494 A CN107891494 A CN 107891494A
- Authority
- CN
- China
- Prior art keywords
- timber
- heating
- vacuum tank
- sheet material
- heated
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/0085—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C
- B27K5/009—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C using a well-defined temperature schedule
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/02—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by compressing
Abstract
The timber of Midst density is selected to sheet material timber profound level heat-treating methods, (1) the invention discloses a kind of；(2) timber is cut into by cuboid-type by electric saw machine；(3) timber after cutting is put into heating in vacuum tank, heating in vacuum tank is heated with 40~50 DEG C/min firing rate, while vacuumized with 0.01Mpa/min decompression rate；(4) and then timber is removed and placed in forcing press out of heating in vacuum tank and timber is compressed；(5) timber after compression is taken out again in heating in vacuum tank, heating in vacuum tank is heated with 30~40 DEG C/min firing rate, while vacuumized with 0.01Mpa/min decompression rate；(6) and then timber is removed and placed in forcing press from heating in vacuum tank and timber is compressed again；(7) when Wood temperature is down to normal temperature, finished product.The present invention enables the profound carbonization of timber, the occurrence of so as to reduce when timber uses expansion or strain cracking.
Description
Technical field
The present invention relates to a kind of to sheet material timber profound level heat-treating methods, belong to wood processing technique field.
Background technology
Sheet material is mainly process by timber or bamboo at present, due to from trees cut down under its interior moisture content of timber compared with
Greatly, as being directly processed into sheet material, then can cause after being easily heated during subsequent use due to sheet material inside sheet material
Moisture evaporation, so as to cause the situation that sheet material occurs being recessed or ftractureed, or the sheet material being directly prepared into using fresh timber is existed
After meeting water the cell membrane in sheet material can be caused to absorb water so as to be expanded, so may result in the feelings that sheet material occurs protruding or expanded
Condition, either depression still protrude the normal use that can all cause sheet material out-of-flatness finally to influence sheet material, therefore in order to overcome this
Individual problem, at present timber cut down from trees it is latter as timber can be all heat-treated so that the cell membrane in timber is broken
Split, and then the moisture of inside is deviate from, the effect to timber sizing is finally reached, then using the timber system after this heat treatment
Into sheet material, it is not only less prone to the situation of depression after heated, and is not easy to projection after water is met, consequently facilitating sheet material
Use.But current heat_treated wood technology is mainly by the way that timber is put into large-scale heating kiln cylinder, then the bottom of at
Portion is heated, and such heat treatment process can only make the surface carbonation of timber, profound timber can not be carbonized, made
After timber usage time length, will expand or strain cracking.
The content of the invention
In view of the above-mentioned problems of the prior art, the present invention provides a kind of side to sheet material with the profound heat treatment of timber
Method, enable the carbonization that timber is profound, the occurrence of so as to reduce when timber uses expansion or strain cracking.
To achieve these goals, the technical solution adopted by the present invention is：It is a kind of that sheet material is heat-treated with timber is profound
Method, comprise the concrete steps that：
(1) timber of Midst density is selected；
(2) timber is cut into by cuboid-type by electric saw machine；
(3) timber after cutting is put into heating in vacuum tank, then makes heating in vacuum tank adding with 40~50 DEG C/min
Thermal velocity is heated, while is vacuumized with 0.01Mpa/min decompression rate, until internal temperature reach 300 DEG C~
350 DEG C, while stop when internal atmospheric pressure value is not more than 0.01Mpa；
(4) and then timber is removed and placed in forcing press out of heating in vacuum tank and timber is compressed, continued
15min, compaction pressure are 1.1~1.5Mpa；
(5) timber after compression is taken out again in heating in vacuum tank, then makes heating in vacuum tank with 30~40 DEG C/min
Firing rate heated, while vacuumized with 0.01Mpa/min decompression rate, until internal temperature reaches 200
DEG C~260 DEG C, while stop when internal atmospheric pressure value is not more than 0.01Mpa；
(6) and then timber is removed and placed in forcing press from heating in vacuum tank and timber is compressed again, continued
10min, compaction pressure are 2.1~2.5Mpa；
(7) when Wood temperature is down to normal temperature, finished product.
Preferably, the temperature reached after being heated in described step (3) is 330 DEG C.
Preferably, the temperature reached after being heated in described step (5) is 240 DEG C.
Compared with prior art, the present invention is by the way of secondary compression and reheating are combined, so as to make timber
Density increase, while preferably carbonization effect can be carried out to wood internal, therefore the present invention enables the profound carbonization of timber,
So as to reduce when timber uses expansion or the occurrence of strain cracking.
Embodiment
The invention will be further described below.
It is a kind of to sheet material timber profound level heat-treating methods, comprise the concrete steps that：
(1) timber of Midst density is selected；
(2) timber is cut into by cuboid-type by electric saw machine；
(3) timber after cutting is put into heating in vacuum tank, then makes heating in vacuum tank adding with 40~50 DEG C/min
Thermal velocity is heated, while is vacuumized with 0.01Mpa/min decompression rate, until internal temperature reach 300 DEG C~
350 DEG C, while stop when internal atmospheric pressure value is not more than 0.01Mpa；
(4) and then timber is removed and placed in forcing press out of heating in vacuum tank and timber is compressed, continued
15min, compaction pressure are 1.1~1.5Mpa；
(5) timber after compression is taken out again in heating in vacuum tank, then makes heating in vacuum tank with 30~40 DEG C/min
Firing rate heated, while vacuumized with 0.01Mpa/min decompression rate, until internal temperature reaches 200
DEG C~260 DEG C, while stop when internal atmospheric pressure value is not more than 0.01Mpa；
(6) and then timber is removed and placed in forcing press from heating in vacuum tank and timber is compressed again, continued
10min, compaction pressure are 2.1~2.5Mpa；
(7) when Wood temperature is down to normal temperature, finished product.
The optimum temperature reached after being heated in described step (3) is 330 DEG C.
The optimum temperature reached after being heated in described step (5) is 240 DEG C.
Claims (3)
- It is 1. a kind of to sheet material timber profound level heat-treating methods, it is characterised in that to comprise the concrete steps that：(1) timber of Midst density is selected；(2) timber is cut into by cuboid-type by electric saw machine；(3) timber after cutting is put into heating in vacuum tank, then makes heating in vacuum tank with 40~50 DEG C/min heating speed Degree is heated, while is vacuumized with 0.01Mpa/min decompression rate, until internal temperature reaches 300 DEG C~350 DEG C, while stop when internal atmospheric pressure value is not more than 0.01Mpa；(4) and then timber is removed and placed in forcing press out of heating in vacuum tank and timber is compressed, continue 15min, pressure Compaction forces are 1.1~1.5Mpa；(5) timber after compression is taken out again in heating in vacuum tank, then make heating in vacuum tank with 30~40 DEG C/min's plus Thermal velocity is heated, while is vacuumized with 0.01Mpa/min decompression rate, until internal temperature reach 200 DEG C~ 260 DEG C, while stop when internal atmospheric pressure value is not more than 0.01Mpa；(6) and then timber is removed and placed in forcing press from heating in vacuum tank and timber is compressed again, continued 10min, compaction pressure are 2.1~2.5Mpa；(7) when Wood temperature is down to normal temperature, finished product.
- It is 2. according to claim 1 to sheet material timber profound level heat-treating methods, it is characterised in that described step (3) temperature reached after being heated in is 330 DEG C.
- It is 3. according to claim 1 to sheet material timber profound level heat-treating methods, it is characterised in that described step (5) temperature reached after being heated in is 240 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711212365.0A CN107891494A (en) | 2017-11-28 | 2017-11-28 | It is a kind of to sheet material timber profound level heat-treating methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711212365.0A CN107891494A (en) | 2017-11-28 | 2017-11-28 | It is a kind of to sheet material timber profound level heat-treating methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107891494A true CN107891494A (en) | 2018-04-10 |
Family
ID=61806318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711212365.0A Withdrawn CN107891494A (en) | 2017-11-28 | 2017-11-28 | It is a kind of to sheet material timber profound level heat-treating methods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107891494A (en) |
-
2017
- 2017-11-28 CN CN201711212365.0A patent/CN107891494A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180410 |