CN103009447A - Log cracking prevention method - Google Patents
Log cracking prevention method Download PDFInfo
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- CN103009447A CN103009447A CN2012105740003A CN201210574000A CN103009447A CN 103009447 A CN103009447 A CN 103009447A CN 2012105740003 A CN2012105740003 A CN 2012105740003A CN 201210574000 A CN201210574000 A CN 201210574000A CN 103009447 A CN103009447 A CN 103009447A
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- log
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- cracking prevention
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Abstract
The invention discloses a simple log cracking prevention method with obvious effects. The log cracking prevention method is characterized in that a cylindrical pressure-reducing through hole is drilled in the axial center of a log. According to the log cracking prevention method provided by the invention, by virtue of the pressure-reducing through hole drilled in the center of the log, water of the log is released through the pressure-reducing through hole in the center of the log and an outer circumference surface of the log simultaneously. Therefore, the center and the outer surface of the log are more uniformly dried, the inner and outer contraction consistency of the log is good, and cracks are difficult to generate. Particularly, in a log drying and contraction process, the middle of the log is hollow, so that relative tension disappears when the former outward surrounding tension loses a center object supplying center counter-acting force (or supporting force) according to a principle of acting force and counter acting force. Therefore, the cracks are prevented on the four sides of the log, and the yield and the use rate of timber can be greatly improved.
Description
Technical field
The present invention relates to a kind of method of wood preservation, more specifically to a kind of method of log anticracking.
Background technology
Trees are after felling, becoming a section columned log is saved, be sawn into again as required the timber of dimension during use, owing to have a large amount of moisture in the tree bar, in depositing process, the moisture of log outer surface at first is released and inwardly shrinks, and the moisture of former core section is also higher, cause inconsistent that wood materials shrinks in the former outer surface of wood, timber heart section outwards produces a kind of powerful tension force all around, this tension force stops the timber of outer surface inwardly to shrink, finally cause at crackle from the circumferential surface of log to the center to occur, and the larger crackle of log diameter is just more much larger, this can have a strong impact on kind and the utilization rate of log, cause the waste of annual a large amount of timber, very unfortunate.Some enterprises can only continually on the timber of stacking water all the year round, this can cause the waste of great lot of water resources and energy, and can have a strong impact on the quality of log, in case cut off the water or water inhomogeneous or crackle can occur, numerous wood industry enterprises are at a complete loss as to what to do to this.
Summary of the invention
The phenomenon that cracks easily in order to overcome log, it is simple to the purpose of this invention is to provide a kind of method, the method for the log anticracking of successful.
The technical scheme that the method for a kind of log anticracking of the present invention adopts: it is characterized in that boring a columniform decompression through hole in the axial centre of log.
The diameter of described decompression through hole is the 3%-10% of butt maximum outside diameter.
Method according to above-mentioned a kind of log anticracking, owing to be drilled with the decompression through hole at the center of log, its effect is when log moisture discharges, moisture discharges simultaneously by center decompression through hole and the outer round surface of log, the center of log and appearance drying are more even, the inside and outside contraction of log is unanimously better, is not easy to crack; Especially in the Logs drying contraction process, because the centre of log has been hollow, principle according to active force and reaction force, when original outside around tension force when having lost the reaction force at center or being called the central object of support force, this relative tension force also just disappeared, thus avoided log around the phenomenon of crackle appears.Although this method has been processed the decompression through hole at the center of log, but for the veneer of the method manufacturing glued board that adopts rotary-cut with log, the intensity of its core own is low, and the position of thimble need to be arranged at the log center, therefore, core part is not used for making veneer yet.And for using the log blanking, major part also is sawn into sheet material or bar uses, although the decompression through hole can affect the utilization rate of material, but the yield rate and the utilization rate that have numerous crackles to compare its timber with original log will improve greatly, and this will efficiently solve crackle appears all around in log in preservation phenomenon.
Description of drawings
Fig. 1 is the stereogram that is drilled with cylindrical decompression through hole in the axial centre of log.
Wherein: 1, log; 2, decompression through hole.
The specific embodiment
The invention will be further described below in conjunction with embodiment.
Fig. 1 is the stereogram that is drilled with cylindrical decompression through hole in the axial centre of log.As seen from the figure, it is to bore a columniform decompression through hole 2 in the axial centre of log 1.The diameter d of described decompression through hole 2 is 3%-10% of butt maximum outside diameter D.
Claims (2)
1. the method for a log anticracking is characterized in that boring a columniform decompression through hole in the axial centre of log.
2. the method for a kind of log anticracking according to claim 1, the diameter that it is characterized in that described decompression through hole is the 3%-10% of butt maximum outside diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105740003A CN103009447A (en) | 2012-12-06 | 2012-12-06 | Log cracking prevention method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105740003A CN103009447A (en) | 2012-12-06 | 2012-12-06 | Log cracking prevention method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103009447A true CN103009447A (en) | 2013-04-03 |
Family
ID=47958826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105740003A Pending CN103009447A (en) | 2012-12-06 | 2012-12-06 | Log cracking prevention method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103009447A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103659986A (en) * | 2013-12-25 | 2014-03-26 | 陆斌 | Method for preventing log against seasoning cracking |
| EP3367032A1 (en) * | 2017-02-28 | 2018-08-29 | Thomas Meister | Method and device fro drying logs |
| CN112917606A (en) * | 2021-01-25 | 2021-06-08 | 蓬莱正泰木业有限公司 | Log drilling method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1129681A (en) * | 1979-05-14 | 1982-08-17 | Josef Leisser | Method of and means for facilitating the curing of timber |
| JP2003117904A (en) * | 2001-10-15 | 2003-04-23 | Yamashita Iwao | Cracking stopping and core drawing apparatus for long- sized timber |
| CN102699972A (en) * | 2012-06-13 | 2012-10-03 | 荣玉石 | Method for preparing log sectional material with drying method |
-
2012
- 2012-12-06 CN CN2012105740003A patent/CN103009447A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1129681A (en) * | 1979-05-14 | 1982-08-17 | Josef Leisser | Method of and means for facilitating the curing of timber |
| JP2003117904A (en) * | 2001-10-15 | 2003-04-23 | Yamashita Iwao | Cracking stopping and core drawing apparatus for long- sized timber |
| CN102699972A (en) * | 2012-06-13 | 2012-10-03 | 荣玉石 | Method for preparing log sectional material with drying method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103659986A (en) * | 2013-12-25 | 2014-03-26 | 陆斌 | Method for preventing log against seasoning cracking |
| EP3367032A1 (en) * | 2017-02-28 | 2018-08-29 | Thomas Meister | Method and device fro drying logs |
| CN112917606A (en) * | 2021-01-25 | 2021-06-08 | 蓬莱正泰木业有限公司 | Log drilling method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130403 |