CN106272834A - A kind of board surface carbonization treatment technique - Google Patents
A kind of board surface carbonization treatment technique Download PDFInfo
- Publication number
- CN106272834A CN106272834A CN201610839328.1A CN201610839328A CN106272834A CN 106272834 A CN106272834 A CN 106272834A CN 201610839328 A CN201610839328 A CN 201610839328A CN 106272834 A CN106272834 A CN 106272834A
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- CN
- China
- Prior art keywords
- plank
- temperature
- board surface
- carbonization treatment
- water content
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- 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
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- 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
- B27M1/06—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by burning or charring, e.g. cutting with hot wire
-
- 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
- B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
Abstract
The invention discloses a kind of board surface carbonization treatment technique, belong to wood processing field, specifically include following steps: (1) plank cuts, the pre-dry-cure of (2) plank, the process of (3) redrying, (4) carbonization treatment, (5) modifier treatment.The collocation of the present invention each step is rationally, can well avoid the generation of the cracking phenomenon of timber in the course of processing, and the finished product after processing has stronger cracking resistance, within more conventional plank only declines 8%, and its cracking resistance reduces about 40% and is significantly improved effect, additionally, the whole handling duration of present invention process shortens 30 ~ 35% after relatively conventional process, in hgher efficiency, there is good promotional value.
Description
Technical field
The invention belongs to wood processing field, be specifically related to a kind of board surface carbonization treatment technique.
Background technology
The timber that carbide wood obtains after referring to, in hot environment, timber is carried out homogeneity carbonization treatment, after carbonization treatment
Timber in addition to surface aesthetic, also there is anticorrosion and antibiont invasion and attack, resistant to elevated temperatures advantage, and owing to it has moisture content
Low, the most hygroscopic, stable material quality, defat indeformable, complete do not overflow fat, heat-proof quality good, without features such as special odors, be preferable
Furniture and indoor and outdoor decoration material.
The carbonization of timber can be divided into again surface carbonation and degree of depth carbonization, as the term suggests, the degree of depth that surface carbonation processes is shallower,
It is generally used for compared with light sheet or the treating of wood relatively low to performance requirement, and the degree of depth of degree of depth carbonization treatment is relatively deep, is generally used for
The treating of wood of thicker plate material or higher to performance requirement, this two ways without quality point, the simply difference of processing technique demand
Different.Although carbide wood has above-mentioned more advantage, but after usual carbonization, the cracking resistance of timber, bending resistance all can decline, for
For relatively light sheet, most because not being used in support, load-bearing etc., therefore the impact of its bending resistance is negligible, but it is multiplex
In decoration, doing surface etc., cracking resistance can have a strong impact on its use value, and people are for relatively thin plate surface carbonization pair at present
Less in the research of sheet material impact, the freshest rare to the process technique improving emphatically, promoting its cracking resistance.
Summary of the invention
It is desirable to provide a kind of board surface carbonization treatment technique.
The present invention is achieved through the following technical solutions:
A kind of board surface carbonization treatment technique, comprises the steps:
(1) plank cuts:
Plank to be processed is cut by the requirement of fabrication design, standby then rinse the impurity such as wood flour with clear water after；
(2) the pre-dry-cure of plank:
Dry kiln put into by plank after step (1) being processed, is dried after 14 ~ 16% standby by its water content；
(3) redrying processes:
Plank after processing step (2) proceeds dried, and now keeping the temperature in dry kiln is 100 ~ 110 DEG C,
It is that the ultrasound wave of 48 ~ 50KHz carries out processing for the first time that plank applies frequency simultaneously, until the water content of plank is dried to 6 ~
8%, then the temperature in dry kiln is risen to 140 ~ 145 DEG C, plank is applied the ultrasound wave that frequency is 55 ~ 58KHz the most again and enters
Row second time processes, until being dried after 3 ~ 4% standby by the water content of plank；It is that plank carbonization is dried that redrying processes
The most important thing in journey, is also the stage that cracking incidence rate is bigger, and during water content 6 ~ 16%, the tangential stress of timber is relatively big, the
During single treatment, control temperature be 100 ~ 110 DEG C, ultrasonic frequency be 48 ~ 50KHz, control the direction of ultrasound wave along wood simultaneously
Material tangential, now can well reduce tangential producing the problem that stress is excessive because being dried, and is dried to during water content 3 ~ 6%, wood
Material radial stress is relatively big, when second time processes, controls corresponding temperature, ultrasonic frequency and direction, can well reduce radially
Producing, because being dried, the problem that stress is excessive, under this mating reaction, the season cracking rate comparability in this stage declines about 50%,
Can well shorten again dry duration, have good action effect；
(4) carbonization treatment:
Plank after step (3) dried is put into carbonizing chamber, and the temperature keeping indoor is 190 ~ 200 DEG C, simultaneously to wood
Plate applies the ultrasound wave that frequency is 33 ~ 35KHz and processes, and after being persistently jointly processed by 1 ~ 2h, obtains carbonization plank standby；In carbonization
During process, its internal moisture is dried completely, and inside is tangential, radial stress is less, its surface wood fibre carbon under the high temperature conditions
Change, surface and longitudinally produce stress, now apply ultrasound wave and be beneficial to improve this stress, simultaneously can also homogenizing board surface temperature
Uniformity, and then improve carbonization treatment effect, shorten handling duration；
(5) modifier treatment:
After step (4) carbonization treatment, first the temperature of plank being down to 150 ~ 155 DEG C, the water content then regulating plank is 1.5
~ 2.5%, then the temperature of plank is down to 90 ~ 100 DEG C, and the water content regulating plank is 4.5 ~ 5.5%, finally by the temperature of plank
Degree is down to 50 ~ 55 DEG C, regulates after the water content of plank is 7 ~ 8% simultaneously, is taken out by carbonization plank, be put under normal temperature and pressure conditions
Natural cooling, finally carries out grinding process to board surface.Plank is carried out the modifier treatment of temperature, moisture, one can be entered
After step lifting carbonization, the stability of plank, enhances its durable, anti-cracking performance.
Further, the thickness of the plank to be processed described in step (1) is not more than 15mm.
Further, the temperature in the dry kiln described in step (2) controls is 70 ~ 80 DEG C.
Further, tangential along plank of the direction of sound wave during carrying out described in step (3) ultrasonic Treatment for the first time
Apply, carry out second time ultrasonic Treatment time sound wave direction along plank radial direction apply.
Further, direction being longitudinally applied to along plank of sound wave during ultrasonic Treatment described in step (4).
Further, the cooling described in step (5) and conditioning are by being passed through the realization of low-temperature atomizing water.
Further, the temperature of described low-temperature atomizing water is 3 ~ 5 DEG C.
There is advantages that
The present invention is dried at plank, carbonization treatment time, strictly control temperature conditions, decrease the temperature bad shadow to sheet material
Ring, the different condition ultrasonic Treatment simultaneously carried out, tangential in each stage timber can be improved very well, stress radially and longitudinally
Difference, and the phenomenon of cracking generation may be caused, moreover it is possible to make being more uniformly distributed of board surface carbonization treatment, whole carbonization treatment
Efficiency promoted the most very well.Final under the mating reaction of each step, carbonization treatment technique of the present invention can well improve
The cracking resistance of plank, within more conventional plank only declines 8%, and after relatively conventional process, its cracking resistance reduces 40% left side
The right side is significantly improved effect, and the whole handling duration of present invention process shortens 30 ~ 35% simultaneously, in hgher efficiency, has well
Promotional value.
Detailed description of the invention
Embodiment 1
A kind of board surface carbonization treatment technique, comprises the steps:
(1) plank cuts:
Plank to be processed is cut by the requirement of fabrication design, standby then rinse the impurity such as wood flour with clear water after；
(2) the pre-dry-cure of plank:
Dry kiln put into by plank after step (1) being processed, is dried after 14 ~ 16% standby by its water content；
(3) redrying processes:
Plank after processing step (2) proceeds dried, and now keeping the temperature in dry kiln is 105 DEG C, simultaneously
Plank applies the ultrasound wave that frequency is 49KHz carry out processing, until being dried the water content of plank to 6 ~ 8%, then for the first time
Temperature in dry kiln is risen to 140 DEG C, plank is applied the ultrasound wave that frequency is 55KHz the most again and carries out processing for the second time,
Until the water content of plank is dried after 3 ~ 4% standby；
(4) carbonization treatment:
Plank after step (3) dried is put into carbonizing chamber, and the temperature keeping indoor is 190 DEG C, executes plank simultaneously
Add the ultrasound wave that frequency is 33KHz to process, after being persistently jointly processed by 1h, obtain carbonization plank standby；
(5) modifier treatment:
After step (4) carbonization treatment, first the temperature of plank being down to 150 DEG C, the water content then regulating plank is 1.5 ~ 2%,
Again the temperature of plank is down to 90 DEG C, and the water content regulating plank is 4.5 ~ 5%, finally the temperature of plank is down to 50 DEG C, with
Time regulation plank water content be 7 ~ 7.5% after, by carbonization plank take out, be put in natural cooling under normal temperature and pressure conditions, the most right
Board surface carries out grinding process.
Further, the thickness of the plank to be processed described in step (1) is not more than 15mm.
Further, the temperature in the dry kiln described in step (2) controls is 70 DEG C.
Further, tangential along plank of the direction of sound wave during carrying out described in step (3) ultrasonic Treatment for the first time
Apply, carry out second time ultrasonic Treatment time sound wave direction along plank radial direction apply.
Further, direction being longitudinally applied to along plank of sound wave during ultrasonic Treatment described in step (4).
Further, the cooling described in step (5) and conditioning are by being passed through the realization of low-temperature atomizing water.
Further, the temperature of described low-temperature atomizing water is 3 DEG C.
Embodiment 2
A kind of board surface carbonization treatment technique, comprises the steps:
(1) plank cuts:
Plank to be processed is cut by the requirement of fabrication design, standby then rinse the impurity such as wood flour with clear water after；
(2) the pre-dry-cure of plank:
Dry kiln put into by plank after step (1) being processed, is dried after 15 ~ 16% standby by its water content；
(3) redrying processes:
Plank after processing step (2) proceeds dried, and now keeping the temperature in dry kiln is 110 DEG C, simultaneously
Plank applies the ultrasound wave that frequency is 50KHz carry out processing, until being dried the water content of plank to 7 ~ 8%, then for the first time
Temperature in dry kiln is risen to 145 DEG C, plank is applied the ultrasound wave that frequency is 58KHz the most again and carries out processing for the second time,
Until the water content of plank is dried after 3 ~ 4% standby；
(4) carbonization treatment:
Plank after step (3) dried is put into carbonizing chamber, and the temperature keeping indoor is 200 DEG C, executes plank simultaneously
Add the ultrasound wave that frequency is 35KHz to process, after being persistently jointly processed by 2h, obtain carbonization plank standby；
(5) modifier treatment:
After step (4) carbonization treatment, first the temperature of plank being down to 155 DEG C, the water content then regulating plank is 2 ~ 2.5%,
Again the temperature of plank is down to 100 DEG C, and the water content regulating plank is 5 ~ 5.5%, finally the temperature of plank is down to 55 DEG C,
Regulate after the water content of plank is 7.5 ~ 8% simultaneously, carbonization plank is taken out, is put in natural cooling under normal temperature and pressure conditions, finally
Board surface is carried out grinding process.
Further, the thickness of the plank to be processed described in step (1) is not more than 15mm.
Further, the temperature in the dry kiln described in step (2) controls is 80 DEG C.
Further, tangential along plank of the direction of sound wave during carrying out described in step (3) ultrasonic Treatment for the first time
Apply, carry out second time ultrasonic Treatment time sound wave direction along plank radial direction apply.
Further, direction being longitudinally applied to along plank of sound wave during ultrasonic Treatment described in step (4).
Further, the cooling described in step (5) and conditioning are by being passed through the realization of low-temperature atomizing water.
Further, the temperature of described low-temperature atomizing water is 5 DEG C.
Comparative example 1
This comparative example 1 compared with Example 1, step (3) redrying process whole during, do not apply ultrasound wave
Processing operation, method step in addition is the most identical.
Comparative example 2
Compared with Example 2, it is each rank in the process of step (3) redrying, step (4) carbonization treatment for this comparative example 2
Section apply ultrasound wave direction all differ, specially embodiment 2 correspondence tangential, radially and longitudinally in two other in
Any one, method step in addition is the most identical.
Matched group
Existing wood surface carbonization treatment technique.
Experimental example 1
In order to contrast effect of the present invention, select with the Fructus Jujubae wood plank that a batch of thickness is 12mm, cut into specification equally after, with
Machine is divided into five groups, and correspondence processes by above-mentioned five kinds of modes respectively, and following table is corresponding correction data:
| Cracking rate (%) in dry run | Cracking rate (%) in carbonisation | The total duration (h) of PROCESS FOR TREATMENT | Finished product relatively original plate cracking resistance rate of descent (%) | |
| Embodiment 1 | 2.5 | 1.9 | 21 | 7.6 |
| Embodiment 2 | 2.4 | 2.0 | 20 | 7.4 |
| Comparative example 1 | 4.9 | 2.4 | 26 | 21.5 |
| Comparative example 2 | 3.5 | 2.2 | 23 | 11.6 |
| Matched group | 5.1 | 2.6 | 28 | 37.8 |
As can be seen from the above table, the present invention processes technique can well strengthen the cracking resistance of plank, can also improve finished product simultaneously
Rate, shortens and makes duration, have good promotional value.
Experimental example 2
In order to contrast effect of the present invention, selecting is the Paulownia wood board of 10mm with a batch of thickness, cut into specification equally after, with
Machine is divided into five groups, and correspondence processes by above-mentioned five kinds of modes respectively, and following table is corresponding correction data:
| Cracking rate (%) in dry run | Cracking rate (%) in carbonisation | The total duration (h) of PROCESS FOR TREATMENT | Finished product relatively original plate cracking resistance rate of descent (%) | |
| Embodiment 1 | 3.2 | 2.3 | 19.5 | 5.5 |
| Embodiment 2 | 3.1 | 2.4 | 19.8 | 5.3 |
| Comparative example 1 | 6.0 | 2.8 | 24.7 | 20.4 |
| Comparative example 2 | 5.0 | 2.6 | 22.3 | 10.5 |
| Matched group | 6.3 | 3.1 | 26.0 | 36.7 |
As seen from the above table, the present invention processes technique can well strengthen the cracking resistance of plank, can also improve yield rate simultaneously, contracting
Short making duration, has good popularizing value.
Claims (7)
1. a board surface carbonization treatment technique, it is characterised in that comprise the steps:
(1) plank cuts:
Plank to be processed is cut by the requirement of fabrication design, standby then rinse the impurity such as wood flour with clear water after；
(2) the pre-dry-cure of plank:
Dry kiln put into by plank after step (1) being processed, is dried after 14 ~ 16% standby by its water content；
(3) redrying processes:
Plank after processing step (2) proceeds dried, and now keeping the temperature in dry kiln is 100 ~ 110 DEG C,
It is that the ultrasound wave of 48 ~ 50KHz carries out processing for the first time that plank applies frequency simultaneously, until the water content of plank is dried to 6 ~
8%, then the temperature in dry kiln is risen to 140 ~ 145 DEG C, plank is applied the ultrasound wave that frequency is 55 ~ 58KHz the most again and enters
Row second time processes, until being dried after 3 ~ 4% standby by the water content of plank；
(4) carbonization treatment:
Plank after step (3) dried is put into carbonizing chamber, and the temperature keeping indoor is 190 ~ 200 DEG C, simultaneously to wood
Plate applies the ultrasound wave that frequency is 33 ~ 35KHz and processes, and after being persistently jointly processed by 1 ~ 2h, obtains carbonization plank standby；
(5) modifier treatment:
After step (4) carbonization treatment, first the temperature of plank being down to 150 ~ 155 DEG C, the water content then regulating plank is 1.5
~ 2.5%, then the temperature of plank is down to 90 ~ 100 DEG C, and the water content regulating plank is 4.5 ~ 5.5%, finally by the temperature of plank
Degree is down to 50 ~ 55 DEG C, regulates after the water content of plank is 7 ~ 8% simultaneously, is taken out by carbonization plank, be put under normal temperature and pressure conditions
Natural cooling, finally carries out grinding process to board surface.
A kind of board surface carbonization treatment technique the most according to claim 1, it is characterised in that described in step (1)
The thickness of plank to be processed is not more than 15mm.
A kind of board surface carbonization treatment technique the most according to claim 1, it is characterised in that described in step (2)
It is 70 ~ 80 DEG C that temperature in dry kiln controls.
A kind of board surface carbonization treatment technique the most according to claim 1, it is characterised in that described in step (3)
Carry out the direction of sound wave during first time ultrasonic Treatment and, along the tangential applying of plank, carry out sound wave during second time ultrasonic Treatment
Direction applies along the radial direction of plank.
A kind of board surface carbonization treatment technique the most according to claim 1, it is characterised in that described in step (4)
Direction being longitudinally applied to along plank of sound wave during ultrasonic Treatment.
A kind of board surface carbonization treatment technique the most according to claim 1, it is characterised in that described in step (5)
Cooling and conditioning are by being passed through the realization of low-temperature atomizing water.
A kind of board surface carbonization treatment technique the most according to claim 6, it is characterised in that described low-temperature atomizing water
Temperature is 3 ~ 5 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610839328.1A CN106272834A (en) | 2016-09-22 | 2016-09-22 | A kind of board surface carbonization treatment technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610839328.1A CN106272834A (en) | 2016-09-22 | 2016-09-22 | A kind of board surface carbonization treatment technique |
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| CN201610839328.1A Pending CN106272834A (en) | 2016-09-22 | 2016-09-22 | A kind of board surface carbonization treatment technique |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160519A (en) * | 2017-04-18 | 2017-09-15 | 阜南县永盛工艺品有限公司 | A kind of carbonization treatment method of wooden boards |
| CN108407018A (en) * | 2018-03-21 | 2018-08-17 | 中铁四局集团建筑工程有限公司 | A method of preservative treatment is carried out to timber |
| CN112358335A (en) * | 2020-11-10 | 2021-02-12 | 贵州欧瑞欣合环保股份有限公司 | Method for carbonizing surface of sludge compost wood conditioner |
| CN112976211A (en) * | 2020-10-16 | 2021-06-18 | 临沂智木家居有限公司 | Production method of household wood door |
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| CN112976211A (en) * | 2020-10-16 | 2021-06-18 | 临沂智木家居有限公司 | Production method of household wood door |
| CN112358335A (en) * | 2020-11-10 | 2021-02-12 | 贵州欧瑞欣合环保股份有限公司 | Method for carbonizing surface of sludge compost wood conditioner |
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Application publication date: 20170104 |