CN106926339A - A kind of manufacturing process for carbonizing fast-growing eucalyptus plate - Google Patents
A kind of manufacturing process for carbonizing fast-growing eucalyptus plate Download PDFInfo
- Publication number
- CN106926339A CN106926339A CN201511008776.9A CN201511008776A CN106926339A CN 106926339 A CN106926339 A CN 106926339A CN 201511008776 A CN201511008776 A CN 201511008776A CN 106926339 A CN106926339 A CN 106926339A
- Authority
- CN
- China
- Prior art keywords
- lath
- fast
- growing eucalyptus
- dry
- charing
- 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
- 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
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/10—Butting blanks of veneer; Joining same along edges; Preparatory processing of edges, e.g. cutting
-
- 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 belongs to man-made board technology field, it is related to the manufacturing process of wood-based plate, more particularly to a kind of manufacturing process for carbonizing fast-growing eucalyptus plate.A kind of manufacturing process for carbonizing fast-growing eucalyptus plate, by fast-growing Eucalyptus lath by after charing process, joggle is spelled width of spelling long and is formed, including fast-growing Eucalyptus lath select → carbonize → tongue and groove → joggle → sanding is sized.It is modified through charing in order to efficiently using the tailing of fast-growing Eucalyptus, large-breadth plates are made using dovetail manner.The tailing of fast-growing Eucalyptus, low material usury is used, and reduces the wooden wasting of resources；Using charring process, low grade material dimensional stability, biological rotproofness and against weather are improved, improvement fast-growing Eucalyptus material improves value；Joggle is combined into large format, and the sheet material prepared meets floor, furniture use requirement, improves timber resources utilization rate.The joggle technique of mortise in width of sheet direction, substitutes traditional bright tooth toe joint technique, reduces product surface seam quantity, increases product appearance aesthetic feeling.
Description
Technical field
The invention belongs to man-made board technology field, it is related to the manufacturing process of wood-based plate, more particularly to a kind of charing fast-growing eucalyptus
The manufacturing process of wood plank.
Background technology
Timber is natural material, and the function of its structure, texture, decorative pattern, color and adjustable humiture gives consumer
Favorable impression, its many excellent properties improve the quality of life of the mankind.However, timber there is also many deficiencies, such as timber
Exchange of moisture can occur with surrounding environment when using and produce drying shrinkage and bulking, so as to cause woodwork to deform, ftracture；Timber is again
It is the food of many mushrooms and insect, so woodwork is easily mouldy, infested.Currently, the feelings for falling sharply year by year in natural timber resource
Under condition, how functionality improvement is carried out by the defect to timber and to fast growing wood material, so as to reach efficiently using limited
Precious timber resource purpose, it has also become an important topic of industry.
One of method to Wood property improvement is charing, and more in current industry is to improve timber by charring process
Value.Such as patent CN103753618A《The micro- carbonizing wood floor board preparation technology of nanometer》In, by improving Temperature Treatment, make ground
Plate surface is slightly carbonized；For another example patent CN103692505A《One kind charing glued board and preparation method thereof》In, by heat
Contact of the laminated steel with veneer, makes veneer reach a certain degree of charing, is then made glued board with charing veneer, so that producing
Product have charred effect.From the point of view of disclosed documents and materials, make the technique of the carbonization of wood by heating raising temperature at present, all
Belong to the shallow charing in top layer, do not change the material of timber thoroughly.For the severe charing of sheet material, and make sheet material physicochemical property
The technique for reaching necessary requirement is also less.
From the point of view of timber resources utilization rate angle is improved, there is the tailing that more method can be processed to timber in industry
Treatment recycling, such as solid wood furniture industry are carried out, most commonly seen is that will process remaining small plate to carry out spelling spelling width long, system
It is used again into big breadth.Such as the patent CN202706470U for announcing《Finger joint wood solid wood floor》In, mentioned solid wood
The substrate layer on floor has just applied to the method for referring to and connecing.
By by the small strip of inferior grade fast-growing Eucalyptus, by carrying out joggle after severe charing, so as to be made significantly panel
The technique of material not yet has disclosure at present.
The content of the invention
In order to efficiently recycle the tailing of fast-growing Eucalyptus, the invention discloses a kind of system for carbonizing fast-growing eucalyptus plate
Make technique.
A kind of manufacturing process for carbonizing fast-growing eucalyptus plate, by fast-growing Eucalyptus lath by after charing process, joggle spells length
Width is spelled to form, including fast-growing Eucalyptus lath select → carbonize → tongue and groove → joggle → sanding is sized.
Fast-growing Eucalyptus lath selecting step of the present invention, is first sized re-dry：
1. it is sized：According to the lath specification of 500~1000mm × 100~300mm × 15~35mm, using four side moulder to Eucalyptus
Lath is processed；
2. dry：Lath stacking after being sized, is put into dry kiln drying, and it is 8~10% to control the final moisture content of lath, is done
Dry 41~49d of time.To make dried lath stay in grade, drying process be divided into three sections：1）The early stage of drying, lath moisture content
By being down to 35%, 31 ± 2d of used time more than 60%, it is 1.68%/d to set average decrease speed；
2）Dry mid-term, lath moisture content is down to 20%, 11 ± 1d of used time by 35%, set average decrease speed as 1.38%/
d；
3）The later stage of drying, lath moisture content is down to 15%, 3 ± 1d of used time by 20%, set average decrease speed as 1.56%/
d。
Carbonization of the present invention, by dried lath stacking, is placed in carbonizing kiln, and superheated steam is used as protection gas
Carbonization temperature is set to 180 DEG C, 190 DEG C, 200 DEG C, 210 DEG C, carbonization time correspondence by body, oxygen content≤1% in steam
1~8h of scope.
Carbonization of the present invention includes preheating, rises wet, intensification, insulation, cooling, cooling, 7 steps of damping：
A. preheating step, that is, rise gentle redrying：70 DEG C of dry-bulb temperature, 45 DEG C of wet-bulb temperature, lath moisture content is down to 3~
5%, dry-bulb temperature is then risen to 120 DEG C with the heating rate of 20 DEG C/h, temperature-rise period ensures that dry, wet-bulb depression is 15~20
℃；
B. wet step is risen, wet-bulb temperature is quickly ramped up to 100 DEG C and 30min is incubated；
C. heating step, 180 DEG C, 190 DEG C, 200 DEG C, 210 DEG C are risen to by dry-bulb temperature with the heating rate of 15 DEG C/h, are heated up
Wet-bulb temperature is kept for 100 DEG C in journey；
D. incubation step, it is ensured that dry-bulb temperature is equal to target temperature, wet-bulb temperature is equal to 100 DEG C, and isothermal holding is according to corresponding
Target temperature is set as 3h, 4h, 5h, 6h successively；
E. cooling step, stops heating, keeps 100 DEG C of wet-bulb temperature, is cooled to 110 DEG C；
F. cooling step, treats that lath is naturally cooled to higher than 30 ± 1 DEG C of room temperature；
G. damping step：Lath is put into small-sized dry kiln carries out damping moisture regain, keeps 40 DEG C of dry-bulb temperature, relative humidity 95%,
By moisture content readjustment to 6~9%.
In one preferred embodiment, tongue and groove step of the present invention：By the short side of lath after charing with automatic tenon butting machine edge
Width and output tongue-and-groove and joint tongue, tenon type is positive ladder type tenon, tenon depth 50mm, the big termination thickness 30mm of tenon, small end head
Thickness 10mm, whole tenon is located at lath thickness centre position, and the center of tenon to plate face distance is 30mm.
In one preferred embodiment, joggle step of the present invention：Use one-component vinyl urethane emulsion adhesive
As splicing adhesive, the short side double spread of tongue and groove, glue-spread 50~60g/ ㎡, using plate joggling apparatus, lath first carries out length direction
Splicing, 5~8kg/cm2 of moulding pressure, 1 ± 0.1h of pressing time, 10 ± 0.2h of health；Then after length will be spelled using four side moulder
Lath rabbet plane light long, it is desirable to smooth, is then spliced on width, same to use one-component vinyl urethane emulsion gluing
Agent, single spreading, glue-spread 110~130g/ ㎡, 7~10kg/cm2 of moulding pressure, 1 ± 0.1h of pressing time, conditioned time 10
±0.2h。
In one preferred embodiment, sanding of the present invention is sized：The good sheet material top and bottom of joggle are dug using planer
Flat, then through abrasive finishing machine abrasive finishing, abrasive band is 80~150 mesh coarse sand bands, and length and width are determined with sizing saw machine.
Beneficial effect
The present invention is modified through charing in order to efficiently using the tailing of fast-growing Eucalyptus, and significantly panel is made using dovetail manner
Material, can be applied to floor, furniture raw material.The tailing of fast-growing Eucalyptus, low material usury is used, and reduces the wooden wasting of resources；Make
With charring process, low grade material dimensional stability, biological rotproofness and against weather are improved, improvement fast-growing Eucalyptus material is improved
Value；Joggle is combined into large format, and the sheet material prepared meets floor, furniture use requirement, so as to improve timber resources profit
With rate.The joggle technique of mortise in width of sheet direction, substitutes traditional bright tooth toe joint technique, subtracts product surface seam quantity
It is few, increase product appearance aesthetic feeling.
Brief description of the drawings
Fig. 1 is a kind of front view for carbonizing fast-growing eucalyptus plate.
Fig. 2 is the top view of the charing fast-growing eucalyptus plate.
Fig. 3 is the side view of the charing fast-growing eucalyptus plate.
Fig. 4 is joggle partial enlarged drawing in the charing fast-growing eucalyptus plate front view.
Specific embodiment
With reference to example, the present invention is described in detail, so that those skilled in the art more fully understand the present invention,
But the invention is not limited in following instance.
The present embodiment is as a example by preparing dimensions for the charing tail eucalyptus camaldulensis wood plank of 1200mm × 800mm × 30mm：
First, fast-growing Eucalyptus lath is selected, and is divided into and is sized, dries：
1. it is sized：Eucalyptus lath is processed using four side moulder, makes the slat dimension scope after processing in 500~1000mm
（It is long）× 100~150mm（It is wide）×30mm（It is thick）.
2. dry：By fast-growing Eucalyptus lath according to type of production conventional method stacking, dry kiln drying is placed on, is tried according to Baidu
Test legal system and determine drying schedule, it is 8~10% to control lath moisture content, and whole arid cycle is 46d.To make dried lath product
Matter stabilization, drying process is divided into three sections：1）The early stage of drying, lath moisture content is set by being down to 35%, used time 31d more than 60%
Average decrease speed is 1.68%/d；2）Mid-term is dried, lath moisture content is down to 20%, used time 11d by 35%, and setting is average
Decrease speed is 1.38%/d；3）The later stage of drying, lath moisture content is down to 15%, used time 3d, the averagely lower reduction of speed of setting by 20%
It is 1.56%/d to spend.
2nd, fast-growing Eucalyptus lath charing：
By lath stacking, carbonizing kiln is placed in, using superheated steam as protective gas, oxygen content is 0.5% in steam, by charcoal
Change temperature and be set to 200 DEG C, carbonization time is 5h.Whole carbonization process experience altogether preheating, rise it is wet, heat up, insulation, lower the temperature,
Cooling, damping totally seven stages.
1. warm-up phase（Rise gentle redrying）：Use 70 DEG C of dry-bulb temperature, 45 DEG C of wet-bulb temperature, by lath moisture content
It is down to 5%.Then, dry-bulb temperature is risen to 120 DEG C with the heating rate of 20 DEG C/h, temperature-rise period ensures that dry, wet-bulb depression is 20
℃；
2. liter wet stage：Wet-bulb temperature is quickly ramped up to 100 DEG C and 30min is incubated；
3. temperature rise period：Dry-bulb temperature is risen into 200 DEG C of target temperature, wet bulb temperature in temperature-rise period with the heating rate of 15 DEG C/h
Degree is kept for 100 DEG C；
4. holding stage：Ensure that dry-bulb temperature is equal to target temperature, wet-bulb temperature is equal to 100 DEG C, isothermal holding 5h；
5. temperature-fall period：After holding stage terminates, stop heating, blower fan remains in operation, keep wet-bulb temperature to be equal to 100 DEG C, drop
Temperature is to 110 DEG C；
6. cooling stage：Treat that lath is naturally cooled to higher than 30 DEG C or so of room temperature, processing procedure terminates；
7. damping stage：Lath after heat treatment is put into small-sized dry kiln carries out damping moisture regain treatment, keeps dry-bulb temperature 40
DEG C, relative humidity 95%, by the moisture content readjustment of timber to 8%.
3rd, fast-growing Eucalyptus lath opens tongue and groove：The short side of the lath after charing is opened with automatic tenon butting machine along width
Go out tongue-and-groove and joint tongue, tenon type is positive ladder type tenon, tenon depth（Length）50mm, the big termination thickness 30mm of tenon, small end head thickness
10mm, whole tenon is located at lath thickness centre position, and the center of tenon to plate face distance is 30mm.
4th, fast-growing Eucalyptus lath splicing：Using one-component vinyl urethane emulsion adhesive as splicing adhesive, tongue and groove
Short side double spread, glue-spread 50g/ ㎡, using plate joggling apparatus, lath first carries out length direction splicing, moulding pressure 8kg/cm2,
Pressing time 1h, health 10h.
The lath rabbet plane light long after length will be spelled using four side moulder, it is desirable to smooth, then be spliced on width, equally make
With one-component vinyl urethane emulsion adhesive, single spreading, glue-spread 130g/ ㎡, moulding pressure 10kg/cm2, during pressurization
Between 1h, conditioned time 10 hours.
5th, sanding is sized：The good sheet material top and bottom of joggle are planished using planer, then through abrasive finishing machine abrasive finishing, abrasive band
It is 120 mesh coarse sand bands, sanding determines thickness for 30mm.
Sheet material is cut using sizing saw machine, 1200mm × 800mm × 30mm will be dimensioned to.
Embodiments of the invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification is made, or other related technical fields are directly or indirectly used in,
Similarly it is included within the scope of the present invention.
Claims (8)
1. a kind of manufacturing process for carbonizing fast-growing eucalyptus plate, by fast-growing Eucalyptus lath by after charing process, joggle spells long spelling
Width is formed, it is characterised in that：Select → carbonize including fast-growing Eucalyptus lath → tongue and groove → joggle → sanding is sized.
2. it is according to claim 1 charing fast-growing eucalyptus plate manufacturing process, it is characterised in that：The fast-growing Eucalyptus plate
Bar selecting step, is first to be sized re-dry, described to be sized：According to 500~1000mm × 100~300mm × 15~35mm
Lath specification, Eucalyptus lath is processed using four side moulder；The drying：Lath stacking after being sized, is put into dry
Dry kiln drying is dry, and it is 8~10%, 41~49d of drying time to control the final moisture content of lath.
3. it is according to claim 1 charing fast-growing eucalyptus plate manufacturing process, it is characterised in that：The carbonization,
By dried lath stacking, carbonizing kiln is placed in, used as protective gas, oxygen content≤1% in steam will be carbonized superheated steam
Temperature is set to 180 DEG C, 190 DEG C, 200 DEG C, 210 DEG C, and carbonization time is 1~8h.
4. it is according to claim 1 charing fast-growing eucalyptus plate manufacturing process, it is characterised in that：The tongue and groove step,
The short side of lath after charing is outputed into tongue-and-groove and joint tongue with automatic tenon butting machine along width, tenon type is positive ladder type tenon, tenon depth
Degree 50mm, the big termination thickness 30mm of tenon, small end head thickness 10mm, whole tenon are located at lath thickness centre position, the center of tenon
It is 30mm to plate face distance.
5. it is according to claim 1 charing fast-growing eucalyptus plate manufacturing process, it is characterised in that：The joggle step,
Using one-component vinyl urethane emulsion adhesive as splicing adhesive, the short side double spread of tongue and groove, 50~60g/ of glue-spread
㎡, using plate joggling apparatus, lath first carries out length direction splicing, 5~8kg/cm2 of moulding pressure, 1 ± 0.1h of pressing time, health
10±0.2h；Then the lath rabbet plane light long after length will be spelled using four side moulder, it is desirable to smooth, will then be spliced on width,
Equally using one-component vinyl urethane emulsion adhesive, single spreading, glue-spread 110~130g/ ㎡, moulding pressure 7~
10kg/cm2,1 ± 0.1h of pressing time, 10 ± 0.2h of conditioned time.
6. it is according to claim 1 charing fast-growing eucalyptus plate manufacturing process, it is characterised in that：The sanding scale
It is very little, the good sheet material top and bottom of joggle are planished using planer, then through abrasive finishing machine abrasive finishing, abrasive band is 80~150 mesh coarse sand bands, is used
Sizing saw machine determines length and width.
7. it is according to claim 2 charing fast-growing eucalyptus plate manufacturing process, it is characterised in that：The drying process point
It is three sections：
1）The early stage of drying, lath moisture content by being down to 35%, 31 ± 2d of used time more than 60%, set average decrease speed as
1.68%/d；
2）Dry mid-term, lath moisture content is down to 20%, 11 ± 1d of used time by 35%, set average decrease speed as 1.38%/
d；
3）The later stage of drying, lath moisture content is down to 15%, 3 ± 1d of used time by 20%, set average decrease speed as 1.56%/
d。
8. the manufacturing process of the charing fast-growing eucalyptus plate according to claim 1 or 3, it is characterised in that：The carbonization step
Suddenly, including preheat, rise it is wet, heat up, insulation, cooling, cooling, 7 steps of damping：
A, preheating, rise gentle redrying, and lath moisture content is down to 3~5%, so by 70 DEG C of dry-bulb temperature, 45 DEG C of wet-bulb temperature
Dry-bulb temperature is risen to 120 DEG C with the heating rate of 20 DEG C/h afterwards, temperature-rise period ensures that dry, wet-bulb depression is 15~20 DEG C；
B. rise wet, wet-bulb temperature is quickly ramped up to 100 DEG C and 30min is incubated；
C. heat up, dry-bulb temperature is risen to 180 DEG C, 190 DEG C, 200 DEG C, 210 DEG C, in temperature-rise period with the heating rate of 15 DEG C/h
Wet-bulb temperature is kept for 100 DEG C；
D. it is incubated, it is ensured that dry-bulb temperature is equal to target temperature, wet-bulb temperature is equal to 100 DEG C, and isothermal holding is according to corresponding target
Temperature is set as 3h, 4h, 5h, 6h successively；
E. lower the temperature, stop heating, keep 100 DEG C of wet-bulb temperature, be cooled to 110 DEG C；
F. cool down, treat that lath is naturally cooled to higher than 30 ± 1 DEG C of room temperature；
G. damping, lath is put into small-sized dry kiln carries out damping moisture regain, keeps 40 DEG C of dry-bulb temperature, and relative humidity 95% will contain
Water rate is adjusted back to 6~9%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511008776.9A CN106926339A (en) | 2015-12-30 | 2015-12-30 | A kind of manufacturing process for carbonizing fast-growing eucalyptus plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511008776.9A CN106926339A (en) | 2015-12-30 | 2015-12-30 | A kind of manufacturing process for carbonizing fast-growing eucalyptus plate |
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|---|---|
| CN106926339A true CN106926339A (en) | 2017-07-07 |
Family
ID=59458395
Family Applications (1)
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|---|---|---|---|
| CN201511008776.9A Pending CN106926339A (en) | 2015-12-30 | 2015-12-30 | A kind of manufacturing process for carbonizing fast-growing eucalyptus plate |
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Cited By (3)
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|---|---|---|---|---|
| CN108943286A (en) * | 2018-06-20 | 2018-12-07 | 浙江省林业科学研究院 | A kind of manufacturing method of corner timber production design dalle |
| CN110293616A (en) * | 2019-06-18 | 2019-10-01 | 广州厚邦木业制造有限公司 | A kind of preparation process of Eucalyptus finger-joint flooring |
| CN112207933A (en) * | 2020-10-09 | 2021-01-12 | 安徽美之然木业有限公司 | Production and processing technique of solid wood carbonized wallboard |
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Cited By (4)
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|---|---|---|---|---|
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| CN112207933A (en) * | 2020-10-09 | 2021-01-12 | 安徽美之然木业有限公司 | Production and processing technique of solid wood carbonized wallboard |
| CN112207933B (en) * | 2020-10-09 | 2022-02-15 | 安徽美之然木业有限公司 | Production and processing technique of solid wood carbonized wallboard |
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Application publication date: 20170707 |