CN106217547A - A kind of processing method promoting redwood dimensional stability - Google Patents
A kind of processing method promoting redwood dimensional stability Download PDFInfo
- Publication number
- CN106217547A CN106217547A CN201610667453.9A CN201610667453A CN106217547A CN 106217547 A CN106217547 A CN 106217547A CN 201610667453 A CN201610667453 A CN 201610667453A CN 106217547 A CN106217547 A CN 106217547A
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- CN
- China
- Prior art keywords
- redwood
- temperature
- dimensional stability
- processing method
- heat treatment
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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
- 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
- B27K5/0005—Cryogenic treatment
-
- 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
- B27K5/001—Heating
-
- 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
Abstract
A kind of processing method promoting redwood dimensional stability, belongs to Wood treatment method technical field and comprises the following steps: delivered in airtight greenhouse by the redwood through drying and processing；Performing cold treatment, refrigeration plant starts starts working, and temperature indoor temperature is slowly dropped to preset temperature lower limit, keeps temperature indoor temperature；After continuing the specific duration of cold treatment, close refrigeration plant；Performing heat treatment, firing equipment starts starts working, and temperature indoor temperature is slowly heated to preset temperature higher limit, hereafter keeps this temperature；Indoor dehumidification device work simultaneously, absorbs because temperature rises the steam produced, and keeps greenhouse to be dried；After continuing the specific duration of heat treatment, close firing equipment；It is repeated in cold-heat treatment 36 times.Above-mentioned a kind of processing method promoting redwood dimensional stability, by hot and cold process is repeated, makes redwood expand and constriction coefficient effective attenuation simultaneously, improves the dimensional stability of redwood itself.
Description
Technical field
The invention belongs to Wood treatment method technical field, a kind of process side promoting redwood dimensional stability
Method.
Background technology
Redwood dimensional stability is significant for the quality promoting mahogany furniture.Along with mahogany furniture enjoys vast
Consumer parent looks at, and current mahogany furniture has occurred in the many families between south to Singapore, north to Heilungkiang.Target marketing
North and south, region latitude, across huge, causes weather can not ignore the impact of mahogany furniture.In order to ensure mahogany furniture indeformable,
Not rupturing, producer and consumer propose higher requirement to the dimensional stability of redwood so that redwood is in hot weather condition
Under expansion and contraction under cold weather conditions reach the scope that redwood material can be born.
Existing typical method is, grant number is that the Chinese patent of ZL201220471781.9 discloses a kind of anti-expansion change
The plank of shape, but the method is not to improve from plank processing and treating method, but by filling out in plank upper and lower surface
The pore of board surface is filled up by the fibre board filling middle-high density, prevents moisture from entering the pore of board surface, and reaches
Prevent the purpose that plank expands.But for redwood, the method the most inherently promotes the dimensional stability of timber, once table
Face packing material comes off or unclamps, and still suffers from the risk of dilatancy.Additionally, mahogany furniture component not only only has flat board,
Also comprising round bar, the side's rod etc. taking measurements greatly different, its surface is filled and is realized difficulty, the restricted application of this inventive method.
And material is filled on surface, directly affects the distinctive quality of mahogany furniture and color and luster.
Summary of the invention
For the problems referred to above existing for prior art, it is an object of the invention to design provides one to promote redwood size
The technical scheme of the processing method of stability, its pass through the hot and cold alternate treatment in greenhouse, make redwood the most slowly travel through height,
Low temperature environment, reduces the coefficient of expansion and the constriction coefficient of redwood simultaneously, and then promotes redwood dimensional stability.
Described a kind of processing method promoting redwood dimensional stability, it is characterised in that comprise the following steps:
Step one: the redwood through drying and processing is delivered in airtight greenhouse；
Step 2: perform cold treatment, refrigeration plant starts starts working, and temperature indoor temperature is slowly dropped to preset temperature lower limit
Value, keeps temperature indoor temperature；After continuing the specific duration of cold treatment, close refrigeration plant；
Step 3: perform heat treatment, firing equipment starts starts working, and temperature indoor temperature is slowly heated to the preset temperature upper limit
Value, hereafter keeps this temperature；Indoor dehumidification device work simultaneously, absorbs because temperature rises the steam produced, and keeps greenhouse to be dried；
After continuing the specific duration of heat treatment, close firing equipment；
Step 4: be repeated in step 2, step 33 times to 6 times.
Described a kind of processing method promoting redwood dimensional stability, it is characterised in that in above-mentioned steps one, at drying
The redwood moisture content of reason is 7-9%.
Described a kind of processing method promoting redwood dimensional stability, it is characterised in that in above-mentioned steps two, presets temperature
Degree lower limit is subzero 18 DEG C to subzero 38 DEG C, and refrigerating speed is 40 DEG C/24h to 50 DEG C/24h, and cold treatment duration is 10
It was to 15 days.
Described a kind of processing method promoting redwood dimensional stability, it is characterised in that in above-mentioned steps three, presets temperature
Degree higher limit is 40 DEG C to 50 DEG C, and rate of warming is 40 DEG C/24h to 50 DEG C/24h, and heat treatment duration is 10 days to 15 days.
Above-mentioned a kind of processing method promoting redwood dimensional stability, has the advantages that
1) by hot and cold process is repeated, make redwood expand and constriction coefficient effective attenuation simultaneously, improve redwood itself
Dimensional stability；
2) by the hot and cold process in greenhouse, the high and low temperature bound that redwood may bear in specific latitude interval is simulated, suitable
All regions in the range of this.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the present invention is expanded on further.
As it is shown in figure 1, redwood furnace drying method of the present invention comprises the following steps:
Step one: the redwood through drying and processing is delivered in airtight greenhouse；The redwood of drying, controls its moisture content and is about 7-
9%；Through the redwood of drying and processing, owing to eliminating certain moisture, the size of redwood has reduced, and redwood can be suppressed in sweltering heat
Expansion under weather condition and the contraction under cold weather conditions.
Step 2: perform cold treatment, refrigeration plant starts starts working, and arranging preset temperature lower limit is subzero 18 DEG C,
Temperature from ambient in greenhouse is slowly dropped to preset temperature lower limit, and refrigerating speed is 45 DEG C/24h；Through the fall of about 1 day
Temperature, reaches preset temperature lower limit；Keep temperature indoor temperature, after continuing cold treatment 15 days, close refrigeration plant.
Step 3: perform heat treatment, firing equipment starts starts working, and arranging preset temperature higher limit is 50 DEG C, by temperature
Indoor temperature is slowly heated to preset temperature higher limit, and programming rate is 45 DEG C/24h；Simultaneously indoor dehumidification device work, absorb because of
Temperature rises the steam produced, and keeps greenhouse to be dried；After the heating of about 2 days, reach preset temperature higher limit；Hereafter protect
Holding temperature, lasting heat treatment, after about 15 days, closes firing equipment；
Being repeated in step 2, step 33 times to 6 times, number of repetition rationally can be arranged according to the cold and hot degree of objective area weather.
In above-mentioned steps two preset temperature lower limit be subzero 20 DEG C, subzero 25 DEG C, subzero 30 DEG C, subzero 35 DEG C or lower 38
DEG C, refrigerating speed is 40 DEG C/24h, 42 DEG C/24h, 47 DEG C/24h or 50 DEG C/24h, continue cold treatment 10 days, 11 days, 12 days, 13
It or 14 days；In above-mentioned steps three, preset temperature higher limit is 40 DEG C, 42 DEG C, 45 DEG C or 48 DEG C, rate of warming be 40 DEG C/24h,
42 DEG C/24h, 47 DEG C/24h or 50 DEG C/24h, heat treatment 10 days, 11 days, 12 days, 13 days or 14 days；Other is as it has been described above, also can
Reach technique effect of the present invention.
The present invention the most hot and cold long-time alternate treatment by redwood, reduces the coefficient of expansion of redwood and shrinks system
Number, promotes the dimensional stability of redwood.
Following for the effectiveness of explanation the inventive method, as a example by the purple light wingceltis in redwood, the method performing the present invention
Test.
After selection drying under the conditions of 25 DEG C a size ofPurple light sandalwood plate.Often pass through
After cold treatment or heat treatment, all measure the length of a purple light sandalwood plate.Length measured by record plank, and unit is mm, and
Comparing with initial length, the difference of gained compares with original length and obtains the coefficient of expansion and constriction coefficient, and its calculation expression is
Experimental condition describes according to the detailed description of the invention of the present invention, but is repeated in the step 2 of the inventive method, step 33
Secondary, complete test.
As a comparison, under the conditions of selection dries latter 25 DEG C a size ofPurple light sandalwood plate,
Under the conditions of being warming up to 50 DEG C, the coefficient of expansion measuring purple light sandalwood plate is 5 ‰.
Result of the test is as shown in table 1.
As shown in Table 1, the redwood after processing through the inventive method, the absolute value of its coefficient of expansion and constriction coefficient all becomes
Little, can effectively promote the dimensional stability of redwood.
Should be understood that these embodiments are merely to illustrate the present invention rather than limit the scope of the present invention.In addition, it is to be understood that
After having read the content that the present invention lectures, the present invention can be made various changes or modifications by those skilled in the art, these
The equivalent form of value falls within the application appended claims limited range equally.
Claims (4)
1. the processing method promoting redwood dimensional stability, it is characterised in that comprise the following steps:
Step one: the redwood through drying and processing is delivered in airtight greenhouse；
Step 2: perform cold treatment, refrigeration plant starts starts working, and temperature indoor temperature is slowly dropped to preset temperature lower limit
Value, keeps temperature indoor temperature；After continuing the specific duration of cold treatment, close refrigeration plant；
Step 3: perform heat treatment, firing equipment starts starts working, and temperature indoor temperature is slowly heated to the preset temperature upper limit
Value, hereafter keeps this temperature；Indoor dehumidification device work simultaneously, absorbs because temperature rises the steam produced, and keeps greenhouse to be dried；
After continuing the specific duration of heat treatment, close firing equipment；
Step 4: be repeated in step 2, step 33 times to 6 times.
A kind of processing method promoting redwood dimensional stability the most as claimed in claim 1, it is characterised in that above-mentioned steps one
In, the redwood moisture content of drying and processing is 7-9%.
A kind of processing method promoting redwood dimensional stability the most as claimed in claim 1, it is characterised in that above-mentioned steps two
In, preset temperature lower limit is subzero 18 DEG C to subzero 38 DEG C, and refrigerating speed is 40 DEG C/24h to 50 DEG C/24h, and cold treatment is lasting
Shi Changwei 10 days to 15 days.
A kind of processing method promoting redwood dimensional stability the most as claimed in claim 1, it is characterised in that above-mentioned steps three
In, preset temperature higher limit is 40 DEG C to 50 DEG C, and rate of warming is 40 DEG C/24h to 50 DEG C/24h, and heat treatment duration is 10
It was to 15 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610667453.9A CN106217547B (en) | 2016-08-15 | 2016-08-15 | A kind of processing method for lifting redwood dimensional stability |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610667453.9A CN106217547B (en) | 2016-08-15 | 2016-08-15 | A kind of processing method for lifting redwood dimensional stability |
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| CN106217547A true CN106217547A (en) | 2016-12-14 |
| CN106217547B CN106217547B (en) | 2017-11-03 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009095687A1 (en) * | 2008-02-01 | 2009-08-06 | Titan Wood Limited | Process for wood acetylation and product thereof |
| CN101664949A (en) * | 2009-09-10 | 2010-03-10 | 浙江林学院 | Preparation method of colored surface compressive plate |
| CN102862201A (en) * | 2011-07-06 | 2013-01-09 | 潘平 | Fast growing wood flame retardant enhanced solid wood section material and its manufacturing method |
| CN103465325A (en) * | 2013-09-10 | 2013-12-25 | 天津晋绥木业有限公司 | Physical modification method for timber |
-
2016
- 2016-08-15 CN CN201610667453.9A patent/CN106217547B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009095687A1 (en) * | 2008-02-01 | 2009-08-06 | Titan Wood Limited | Process for wood acetylation and product thereof |
| CN101664949A (en) * | 2009-09-10 | 2010-03-10 | 浙江林学院 | Preparation method of colored surface compressive plate |
| CN102862201A (en) * | 2011-07-06 | 2013-01-09 | 潘平 | Fast growing wood flame retardant enhanced solid wood section material and its manufacturing method |
| CN103465325A (en) * | 2013-09-10 | 2013-12-25 | 天津晋绥木业有限公司 | Physical modification method for timber |
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| Publication number | Publication date |
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| CN106217547B (en) | 2017-11-03 |
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Denomination of invention: A processing method for improving the dimensional stability of mahogany Effective date of registration: 20230516 Granted publication date: 20171103 Pledgee: Industrial Commercial Bank of China Ltd. Dongyang branch Pledgor: DONGYANG RONGXUAN ARTS & CRAFTS Co.,Ltd. Registration number: Y2023980040660 |