CN1836855A - Differential drying shrinkage splicing method in timber deep processing - Google Patents
Differential drying shrinkage splicing method in timber deep processing Download PDFInfo
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- CN1836855A CN1836855A CN 200510016649 CN200510016649A CN1836855A CN 1836855 A CN1836855 A CN 1836855A CN 200510016649 CN200510016649 CN 200510016649 CN 200510016649 A CN200510016649 A CN 200510016649A CN 1836855 A CN1836855 A CN 1836855A
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Abstract
The present invention is one dry shrinkage difference sorting method in timber processing process. The dry shrinkage difference sorting method is that during timber processing and between the drying step and the processing step, one timber sorting step is increased to check timber specification based on the dry shrinkage rate controlling and processing specification list. In the timber sorting step, the blanks of the same or similar tree species and the same cutting plane in the same or near dry shrinkage are sorted for assembly. The present invention has the beneficial effects of reduced time waste caused by desorption, moisture absorption, dry shrinkage, etc, prevention of timber bending, warp, torsion, cracking, swelling and unevenness, and raised economic benefit.
Description
Technical field
The invention belongs to the wood processing technique field.
Background technology
At present, the timber comprehensive utilization ratio of China only reaches about 65-75%, and developed country can reach more than 95%, and its main cause is except that logging operation technology falls behind, and the waste in essence, deep-processing process also is a key factor.Now, aspect essence, deep processing, though upgraded equipment, improved technology, solved timber from hardware and discarded the problem high, that the inferior rate of product is high, but because the problem of wood shrinkage difference, if seeds difference, the tangent plane difference of blank material can produce after the splicing and shrink, is out of shape, ftractures, and causes residual, the inferior problem of product.
The tangent plane of blank material generally is divided into two kinds of radial longitudinal section, tangential sections, and as shown in Figure 1 and Figure 2, two kinds of its dry shrinkage differences of tangent plane are very big.
Summary of the invention
The objective of the invention is:
Differential drying shrinkage splicing method in a kind of wood deep processing is provided, and this method is to splice by classification, timber tangent plane that timber wood is planted.
Method of the present invention is:
Timber processing can be divided into raw material, the processing of becoming a useful person, drying, manufacturing procedure, check, several procedures of finished product.
In the manufacturing procedure process of becoming a useful person, adopt contract with dry rate control processing specification table, the manufactured goods blank gauge lattice of checking out;
Between drying and manufacturing procedure, increase the operation of selecting materials, select identical, close seeds for use, the blank material assembly that tangent plane is identical is promptly selected identical, the close blank material assembly of ratio of tangential to radial shrinkage for use.
The invention has the beneficial effects as follows:
Can overcome because the loss and waste that desorb or moisture absorption, drying shrinkage etc. cause, by processing near numerical value, can avoid bending, warpage, distortion, cracking, expansion, the rough phenomenon of timber to take place, can guarantee advanced, the reasonability in technology ground in the wood deep processing fully, can save timber in large quantities, reach material its usefulness to the greatest extent, can increase economic efficiency significantly, guarantee social benefit fully.
Description of drawings
Fig. 1 is a radial longitudinal section blank flitch material schematic diagram;
Fig. 2 is a tangential section blank flitch material schematic diagram;
Fig. 3 is a timber processing basic flow sheet of the present invention;
The specific embodiment
Embodiment 1:
Produce 100 mm wide toothed oaks wood solid wooden floor board, raw material is big footpath level (raw material footpath level is more than 36 centimetres), trunk top sapwood, radial longitudinal section, and by examination toothed oak wood green moisture content difference dry shrinkage table, drawing contract with dry rate is 3.9%, the wide of blank material both had been 106 millimeters.And be both this toothed oak wood species, and as adopting tangential section, by examination toothed oak wood green moisture content difference dry shrinkage table, its shrinkage factor is 8.1%, the wide of blank material both had been 114 millimeters.
Embodiment 2:
Produce Korean pine splicing sheet material, raw material adopts footpath level bottom sapwood more than 36 centimetres, and the top heartwood, the blank material is radial longitudinal section, looks into Korean pine wood green moisture content difference dry shrinkage table, drawing level bottom, footpath sapwood contract with dry rate is 2.7%, top heartwood contract with dry rate is 2.6%, and because of these two kinds of blank material are same seeds, and the blank material is radial longitudinal section, drying shrinkage rate variance 0.1%, but therefore assembly splicing.
Korean pine greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
| Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position | Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 97.3 | 2.7 | Radial longitudinal section | The bottom sapwood | 100×100 | 98.4 | 1.6 | Radial longitudinal section | The bottom heartwood |
| 100×100 | 98.1 | 1.9 | Radial longitudinal section | The middle part sapwood | 100×100 | 98.8 | 1.2 | Radial longitudinal section | The middle part heartwood |
| 100×100 | 97.2 | 2.8 | Radial longitudinal section | The top sapwood | 100×100 | 97.4 | 2.6 | Radial longitudinal section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 77.4 | 3.1 | Radial longitudinal section | The bottom sapwood | 80×80 | 77.8 | 2.8 | Radial longitudinal section | The bottom heartwood |
| 80×80 | 77.9 | 2.6 | Radial longitudinal section | The middle part sapwood | 80×80 | 78.2 | 2.2 | Radial longitudinal section | The middle part heartwood |
| 80×80 | 77.6 | 3.0 | Radial longitudinal section | The top sapwood | 80×80 | 78.2 | 2.2 | Radial longitudinal section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 48.3 | 3.4 | Radial longitudinal section | The bottom sapwood | 50×50 | 48.4 | 3.2 | Radial longitudinal section | The bottom heartwood |
| 50×50 | 48.5 | 3.0 | Radial longitudinal section | The middle part sapwood | 50×50 | 48.8 | 2.4 | Radial longitudinal section | The middle part heartwood |
| 50×50 | 48.2 | 3.7 | Radial longitudinal section | The top sapwood | 50×50 | 48.5 | 3.0 | Radial longitudinal section | The top heartwood |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 93.7 | 6.3 | Tangential section | The bottom sapwood | 100×100 | 94.9 | 5.1 | Tangential section | The bottom heartwood |
| 100×100 | 94.0 | 6.0 | Tangential section | The middle part sapwood | 100×100 | 94.5 | 5.5 | Tangential section | The middle part heartwood |
| 100×100 | 94.6 | 5.4 | Tangential section | The top sapwood | 100×100 | 94.0 | 6.0 | Tangential section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 74.6 | 6.8 | Tangential section | The bottom sapwood | 80×80 | 75.0 | 6.2 | Tangential section | The bottom heartwood |
| 80×80 | 74.9 | 6.3 | Tangential section | The middle part sapwood | 80×80 | 75.0 | 6.1 | Tangential section | The middle part heartwood |
| 80×80 | 75.9 | 5.1 | Tangential section | The top sapwood | 80×80 | 76.0 | 5.0 | Tangential section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 47.0 | 6.0 | Tangential section | The bottom sapwood | 50×50 | 47.1 | 5.8 | Tangential section | The bottom heartwood |
| 50×50 | 47.0 | 6.1 | Tangential section | The middle part sapwood | 50×50 | 47.4 | 5.3 | Tangential section | The middle part heartwood |
| 50×50 | 47.2 | 5.5 | Tangential section | The top sapwood | 50×50 | 47.5 | 5.0 | Tangential section | The top heartwood |
Fish-scale floss can be shown with reference to this
Abies holophylla greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
| Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position | Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 95.5 | 4.5 | Radial longitudinal section | The bottom sapwood | 100×100 | 95.8 | 4.2 | Radial longitudinal section | The bottom heartwood |
| 100×100 | 95.9 | 4.1 | Radial longitudinal section | The middle part sapwood | 100×100 | 96.3 | 3.7 | Radial longitudinal section | The middle part heartwood |
| 100×100 | 96.7 | 3.3 | Radial longitudinal section | The top sapwood | 100×100 | 94.7 | 3.3 | Radial longitudinal section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 76.2 | 4.8 | Radial longitudinal section | The bottom sapwood | 80×80 | 76.5 | 4.4 | Radial longitudinal section | The bottom heartwood |
| 80×80 | 76.5 | 4.4 | Radial longitudinal section | The middle part sapwood | 80×80 | 76.8 | 4.0 | Radial longitudinal section | The middle part heartwood |
| 80×80 | 76.8 | 4.0 | Radial longitudinal section | The top sapwood | 80×80 | 77.1 | 3.6 | Radial longitudinal section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 47.5 | 5.0 | Radial longitudinal section | The bottom sapwood | 50×50 | 47.6 | 4.8 | Radial longitudinal section | The bottom heartwood |
| 50×50 | 47.7 | 4.6 | Radial longitudinal section | The middle part sapwood | 50×50 | 47.8 | 4.5 | Radial longitudinal section | The middle part heartwood |
| 50×50 | 48.0 | 4.1 | Radial longitudinal section | The top sapwood | 50×50 | 47.9 | 4.2 | Radial longitudinal section | The top heartwood |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 92.7 | 7.3 | Tangential section | The bottom sapwood | 100×100 | 93.2 | 6.8 | Tangential section | The bottom heartwood |
| 100×100 | 93.0 | 7.0 | Tangential section | The middle part sapwood | 100×100 | 93.7 | 6.3 | Tangential section | The middle part heartwood |
| 100×100 | 93.6 | 6.4 | Tangential section | The top sapwood | 100×100 | 94.3 | 5.7 | Tangential section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 73.7 | 7.9 | Tangential section | The bottom sapwood | 80×80 | 74.4 | 7.0 | Tangential section | The bottom heartwood |
| 80×80 | 74.2 | 7.3 | Tangential section | The middle part sapwood | 80×80 | 74.6 | 6.7 | Tangential section | The middle part heartwood |
| 80×80 | 74.4 | 7.0 | Tangential section | The top sapwood | 80×80 | 74.7 | 6.6 | Tangential section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 45.8 | 8.4 | Tangential section | The bottom sapwood | 50×50 | 46.3 | 7.5 | Tangential section | The bottom heartwood |
| 50×50 | 46.1 | 7.8 | Tangential section | The middle part sapwood | 50×50 | 46.5 | 7.1 | Tangential section | The middle part heartwood |
| 50×50 | 46.3 | 7.4 | Tangential section | The top sapwood | 50×50 | 46.5 | 7.0 | Tangential section | The top heartwood |
Larch can be shown with reference to this
Smelly loose greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
| Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position | Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 94.5 | 5.5 | Radial longitudinal section | The bottom sapwood | 100×100 | 95.7 | 4.3 | Radial longitudinal section | The bottom heartwood |
| 100×100 | 94.9 | 5.1 | Radial longitudinal section | The middle part sapwood | 100×100 | 96.0 | 4.0 | Radial longitudinal section | The middle part heartwood |
| 100×100 | 95.4 | 4.6 | Radial longitudinal section | The top sapwood | 100×100 | 96.4 | 3.6 | Radial longitudinal section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 75.3 | 5.9 | Radial longitudinal section | The bottom sapwood | 80×80 | 76.1 | 4.9 | Radial longitudinal section | The bottom heartwood |
| 80×80 | 75.7 | 5.4 | Radial longitudinal section | The middle part sapwood | 80×80 | 76.5 | 4.4 | Radial longitudinal section | The middle part heartwood |
| 80×80 | 75.9 | 5.1 | Radial longitudinal section | The top sapwood | 80×80 | 77.0 | 3.8 | Radial longitudinal section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 47.0 | 6.1 | Radial longitudinal section | The bottom sapwood | 50×50 | 47.5 | 5.0 | Radial longitudinal section | The bottom heartwood |
| 50×50 | 47.2 | 5.7 | Radial longitudinal section | The middle part sapwood | 50×50 | 47.8 | 4.5 | Radial longitudinal section | The middle part heartwood |
| 50×50 | 47.3 | 5.4 | Radial longitudinal section | The top sapwood | 50×50 | 48.1 | 3.9 | Radial longitudinal section | The top heartwood |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 91.9 | 8.1 | Tangential section | The bottom sapwood | 100×100 | 92.5 | 7.5 | Tangential section | The bottom heartwood |
| 100×100 | 92.3 | 5.7 | Tangential section | The middle part sapwood | 100×100 | 93.0 | 7.0 | Tangential section | The middle part heartwood |
| 100×100 | 93.0 | 7.0 | Tangential section | The top sapwood | 100×100 | 94.3 | 6.7 | Tangential section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 73.1 | 8.6 | Tangential section | The bottom sapwood | 80×80 | 73.8 | 7.7 | Tangential section | The bottom heartwood |
| 80×80 | 73.3 | 8.4 | Tangential section | The middle part sapwood | 80×80 | 74.1 | 7.4 | Tangential section | The middle part heartwood |
| 80×80 | 73.6 | 8.0 | Tangential section | The top sapwood | 80×80 | 74.4 | 7.0 | Tangential section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 45.5 | 9.0 | Tangential section | The bottom sapwood | 50×50 | 46.0 | 8.0 | Tangential section | The bottom heartwood |
| 50×50 | 45.7 | 8.6 | Tangential section | The middle part sapwood | 50×50 | 46.2 | 7.7 | Tangential section | The middle part heartwood |
| 50×50 | 46.0 | 81 | Tangential section | The top sapwood | 50×50 | 46.5 | 7.1 | Tangential section | The top heartwood |
Manchurian ash greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
| Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position | Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 95.7 | 4.3 | Radial longitudinal section | The bottom sapwood | 100×100 | 95.9 | 4.1 | Radial longitudinal section | The bottom heartwood |
| 100×100 | 95.9 | 4.1 | Radial longitudinal section | The middle part sapwood | 100×100 | 96.1 | 3.9 | Radial longitudinal section | The middle part heartwood |
| 100×100 | 96.4 | 3.6 | Radial longitudinal section | The top sapwood | 100×100 | 96.9 | 3.1 | Radial longitudinal section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 76.1 | 4.9 | Radial longitudinal section | The bottom sapwood | 80×80 | 76.6 | 4.3 | Radial longitudinal section | The bottom heartwood |
| 80×80 | 76.5 | 4.4 | Radial longitudinal section | The middle part sapwood | 80×80 | 76.8 | 4.0 | Radial longitudinal section | The middle part heartwood |
| 80×80 | 76.8 | 4.0 | Radial longitudinal section | The top sapwood | 80×80 | 77.4 | 3.2 | Radial longitudinal section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 47.4 | 5.3 | Radial longitudinal section | The bottom sapwood | 50×50 | 47.5 | 5.0 | Radial longitudinal section | The bottom heartwood |
| 50×50 | 47.6 | 4.8 | Radial longitudinal section | The middle part sapwood | 50×50 | 47.8 | 4.5 | Radial longitudinal section | The middle part heartwood |
| 50×50 | 47.9 | 4.3 | Radial longitudinal section | The top sapwood | 50×50 | 48.0 | 4.0 | Radial longitudinal section | The top heartwood |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 91.3 | 8.7 | Tangential section | The bottom sapwood | 100×100 | 91.7 | 8.3 | Tangential section | The bottom heartwood |
| 100×100 | 91.8 | 8.2 | Tangential section | The middle part sapwood | 100×100 | 92.0 | 8.0 | Tangential section | The middle part heartwood |
| 100×100 | 92.2 | 7.8 | Tangential section | The top sapwood | 100×100 | 92.5 | 7.5 | Tangential section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 72.8 | 9.0 | Tangential section | The bottom sapwood | 80×80 | 73.1 | 8.6 | Tangential section | The bottom heartwood |
| 80×80 | 73.0 | 8.8 | Tangential section | The middle part sapwood | 80×80 | 73.6 | 8.0 | Tangential section | The middle part heartwood |
| 80×80 | 73.3 | 8.4 | Tangential section | The top sapwood | 80×80 | 74.1 | 7.4 | Tangential section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 45.3 | 9.4 | Tangential section | The bottom sapwood | 50×50 | 45.5 | 9.0 | Tangential section | The bottom heartwood |
| 50×50 | 45.5 | 9.0 | Tangential section | The middle part sapwood | 50×50 | 45.7 | 8.6 | Tangential section | The middle part heartwood |
| 50×50 | 45.7 | 8.6 | Tangential section | The top sapwood | 50×50 | 46.0 | 8.0 | Tangential section | The top heartwood |
Toothed oak wood greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
| Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position | Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 95.5 | 4.5 | Radial longitudinal section | The bottom sapwood | 100×100 | 95.6 | 4.4 | Radial longitudinal section | The bottom heartwood |
| 100×100 | 95.8 | 4.2 | Radial longitudinal section | The middle part sapwood | 100×100 | 96.3 | 3.7 | Radial longitudinal section | The middle part heartwood |
| 100×100 | 96.1 | 3.9 | Radial longitudinal section | The top sapwood | 100×100 | 97.0 | 3.0 | Radial longitudinal section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 75.9 | 5.1 | Radial longitudinal section | The bottom sapwood | 80×80 | 76.5 | 4.4 | Radial longitudinal section | The bottom heartwood |
| 80×80 | 76.2 | 4.8 | Radial longitudinal section | The middle part sapwood | 80×80 | 76.7 | 4.1 | Radial longitudinal section | The middle part heartwood |
| 80×80 | 76.6 | 4.3 | Radial longitudinal section | The top sapwood | 80×80 | 77.6 | 3.0 | Radial longitudinal section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 47.3 | 5.5 | Radial longitudinal section | The bottom sapwood | 50×50 | 47.4 | 5.2 | Radial longitudinal section | The bottom heartwood |
| 50×50 | 47.7 | 4.7 | Radial longitudinal section | The middle part sapwood | 50×50 | 47.7 | 4.7 | Radial longitudinal section | The middle part heartwood |
| 50×50 | 48.0 | 4.0 | Radial longitudinal section | The top sapwood | 50×50 | 48.0 | 4.1 | Radial longitudinal section | The top heartwood |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 91.1 | 8.9 | Tangential section | The bottom sapwood | 100×100 | 91.4 | 8.6 | Tangential section | The bottom heartwood |
| 100×100 | 91.4 | 8.6 | Tangential section | The middle part sapwood | 100×100 | 91.9 | 8.1 | Tangential section | The middle part heartwood |
| 100×100 | 91.9 | 8.1 | Tangential section | The top sapwood | 100×100 | 92.2 | 7.8 | Tangential section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 72.6 | 9.2 | Tangential section | The bottom sapwood | 80×80 | 72.8 | 9.0 | Tangential section | The bottom heartwood |
| 80×80 | 73.0 | 8.7 | Tangential section | The middle part sapwood | 80×80 | 73.1 | 8.6 | Tangential section | The middle part heartwood |
| 80×80 | 73.5 | 8.1 | Tangential section | The top sapwood | 80×80 | 73.5 | 8.1 | Tangential section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 45.2 | 9.6 | Tangential section | The bottom sapwood | 50×50 | 45.4 | 9.2 | Tangential section | The bottom heartwood |
| 50×50 | 45.4 | 9.2 | Tangential section | The middle part sapwood | 50×50 | 45.5 | 9.0 | Tangential section | The middle part heartwood |
| 50×50 | 45.5 | 9.0 | Tangential section | The top sapwood | 50×50 | 45.8 | 8.5 | Tangential section | The top heartwood |
Elm greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
| Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position | Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 96.7 | 3.3 | Radial longitudinal section | The bottom sapwood | 100×100 | 97.0 | 3.0 | Radial longitudinal section | The bottom heartwood |
| 100×100 | 97.0 | 3.0 | Radial longitudinal section | The middle part sapwood | 100×100 | 97.4 | 2.6 | Radial longitudinal section | The middle part heartwood |
| 100×100 | 97.4 | 2.6 | Radial longitudinal section | The top sapwood | 100×100 | 97.9 | 2.1 | Radial longitudinal section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 77.0 | 3.7 | Radial longitudinal section | The bottom sapwood | 80×80 | 77.3 | 3.4 | Radial longitudinal section | The bottom heartwood |
| 80×80 | 77.5 | 3.1 | Radial longitudinal section | The middle part sapwood | 80×80 | 77.6 | 2.9 | Radial longitudinal section | The middle part heartwood |
| 80×80 | 77.5 | 3.0 | Radial longitudinal section | The top sapwood | 80×80 | 77.6 | 2.9 | Radial longitudinal section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 48.0 | 4.0 | Radial longitudinal section | The bottom sapwood | 50×50 | 48.0 | 4.0 | Radial longitudinal section | The bottom heartwood |
| 50×50 | 48.0 | 4.0 | Radial longitudinal section | The middle part sapwood | 50×50 | 48.2 | 3.6 | Radial longitudinal section | The middle part heartwood |
| 50×50 | 48.3 | 3.5 | Radial longitudinal section | The top sapwood | 50×50 | 48.2 | 3.6 | Radial longitudinal section | The top heartwood |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 92.8 | 7.2 | Tangential section | The bottom sapwood | 100×100 | 93.3 | 6.7 | Tangential section | The bottom heartwood |
| 100×100 | 93.9 | 6.1 | Tangential section | The middle part sapwood | 100×100 | 93.3 | 6.7 | Tangential section | The middle part heartwood |
| 100×100 | 93.9 | 6.1 | Tangential section | The top sapwood | 100×100 | 94.0 | 6.0 | Tangential section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 73.8 | 7.8 | Tangential section | The bottom sapwood | 80×80 | 74.4 | 7.0 | Tangential section | The bottom heartwood |
| 80×80 | 74.4 | 7.0 | Tangential section | The middle part sapwood | 80×80 | 75.0 | 6.3 | Tangential section | The middle part heartwood |
| 80×80 | 74.9 | 6.4 | Tangential section | The top sapwood | 80×80 | 75.2 | 6.0 | Tangential section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 46.0 | 8.0 | Tangential section | The bottom sapwood | 50×50 | 46.3 | 7.4 | Tangential section | The bottom heartwood |
| 50×50 | 46.2 | 7.7 | Tangential section | The middle part sapwood | 50×50 | 46.5 | 7.0 | Tangential section | The middle part heartwood |
| 50×50 | 46.5 | 7.0 | Tangential section | The top sapwood | 50×50 | 46.7 | 6.7 | Tangential section | The top heartwood |
Walnut autumn greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
| Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position | Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 95.2 | 4.8 | Radial longitudinal section | The bottom sapwood | 100×100 | 95.5 | 4.5 | Radial longitudinal section | The bottom heartwood |
| 100×100 | 95.7 | 4.3 | Radial longitudinal section | The middle part sapwood | 100×100 | 96.0 | 4.0 | Radial longitudinal section | The middle part heartwood |
| 100×100 | 96.1 | 3.9 | Radial longitudinal section | The top sapwood | 100×100 | 96.0 | 4.0 | Radial longitudinal section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 76.1 | 4.9 | Radial longitudinal section | The bottom sapwood | 80×80 | 75.8 | 5.2 | Radial longitudinal section | The bottom heartwood |
| 80×80 | 76.8 | 4.0 | Radial longitudinal section | The middle part sapwood | 80×80 | 75.8 | 5.2 | Radial longitudinal section | The middle part heartwood |
| 80×80 | 76.8 | 4.0 | Radial longitudinal section | The top sapwood | 80×80 | 76.2 | 4.7 | Radial longitudinal section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 47.5 | 5.0 | Radial longitudinal section | The bottom sapwood | 50×50 | 47.5 | 4.8 | Radial longitudinal section | The bottom heartwood |
| 50×50 | 47.5 | 5.0 | Radial longitudinal section | The middle part sapwood | 50×50 | 47.9 | 4.2 | Radial longitudinal section | The middle part heartwood |
| 50×50 | 47.9 | 4.3 | Radial longitudinal section | The top sapwood | 50×50 | 48.0 | 4.0 | Radial longitudinal section | The top heartwood |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 92.3 | 7.7 | Tangential section | The bottom sapwood | 100×100 | 92.4 | 7.6 | Tangential section | The bottom heartwood |
| 100×100 | 92.7 | 7.3 | Tangential section | The middle part sapwood | 100×100 | 93.0 | 7.0 | Tangential section | The middle part heartwood |
| 100×100 | 92.7 | 7.3 | Tangential section | The top sapwood | 100×100 | 93.0 | 7.0 | Tangential section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 73.0 | 8.7 | Tangential section | The bottom sapwood | 80×80 | 73.2 | 8.5 | Tangential section | The bottom heartwood |
| 80×80 | 73.6 | 8.0 | Tangential section | The middle part sapwood | 80×80 | 73.2 | 8.5 | Tangential section | The middle part heartwood |
| 80×80 | 73.6 | 8.0 | Tangential section | The top sapwood | 80×80 | 73.6 | 8.0 | Tangential section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 45.6 | 8.9 | Tangential section | The bottom sapwood | 50×50 | 45.7 | 8.7 | Tangential section | The bottom heartwood |
| 50×50 | 45.8 | 8.4 | Tangential section | The middle part sapwood | 50×50 | 45.9 | 8.2 | Tangential section | The middle part heartwood |
| 50×50 | 45.6 | 8.9 | Tangential section | The top sapwood | 50×50 | 46.1 | 7.8 | Tangential section | The top heartwood |
Linden greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
| Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position | Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 94.9 | 5.1 | Radial longitudinal section | The bottom sapwood | 100×100 | 95.2 | 4.8 | Radial longitudinal section | The bottom heartwood |
| 100×100 | 95.2 | 4.8 | Radial longitudinal section | The middle part sapwood | 100×100 | 95.7 | 4.3 | Radial longitudinal section | The middle part heartwood |
| 100×100 | 95.7 | 4.3 | Radial longitudinal section | The top sapwood | 100×100 | 96.0 | 4.0 | Radial longitudinal section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 75.7 | 5.4 | Radial longitudinal section | The bottom sapwood | 80×80 | 75.9 | 5.1 | Radial longitudinal section | The bottom heartwood |
| 80×80 | 76.0 | 5.0 | Radial longitudinal section | The middle part sapwood | 80×80 | 76.2 | 4.7 | Radial longitudinal section | The middle part heartwood |
| 80×80 | 76.5 | 4.4 | Radial longitudinal section | The top sapwood | 80×80 | 76.7 | 4.1 | Radial longitudinal section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 47.2 | 5.7 | Radial longitudinal section | The bottom sapwood | 50×50 | 47.4 | 5.3 | Radial longitudinal section | The bottom heartwood |
| 50×50 | 47.4 | 5.3 | Radial longitudinal section | The middle part sapwood | 50×50 | 47.5 | 5.0 | Radial longitudinal section | The middle part heartwood |
| 50×50 | 47.6 | 4.9 | Radial longitudinal section | The top sapwood | 50×50 | 47.9 | 4.3 | Radial longitudinal section | The top heartwood |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 92.9 | 7.1 | Tangential section | The bottom sapwood | 100×100 | 93.0 | 7.0 | Tangential section | The bottom heartwood |
| 100×100 | 93.3 | 6.7 | Tangential section | The middle part sapwood | 100×100 | 93.4 | 6.6 | Tangential section | The middle part heartwood |
| 100×100 | 93.8 | 6.2 | Tangential section | The top sapwood | 100×100 | 94.0 | 6.0 | Tangential section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 73.8 | 7.8 | Tangential section | The bottom sapwood | 80×80 | 74.2 | 7.2 | Tangential section | The bottom heartwood |
| 80×80 | 74.2 | 7.3 | Tangential section | The middle part sapwood | 80×80 | 74.6 | 6.8 | Tangential section | The middle part heartwood |
| 80×80 | 74.5 | 6.9 | Tangential section | The top sapwood | 80×80 | 75.0 | 6.3 | Tangential section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 46.0 | 7.9 | Tangential section | The bottom sapwood | 50×50 | 46.2 | 7.7 | Tangential section | The bottom heartwood |
| 50×50 | 46.4 | 7.2 | Tangential section | The middle part sapwood | 50×50 | 46.6 | 6.9 | Tangential section | The middle part heartwood |
| 50×50 | 46.5 | 7.0 | Tangential section | The top sapwood | 50×50 | 46.7 | 6.7 | Tangential section | The top heartwood |
White poplar can be with reference to these data
Maple wood, maple birch greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
| Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position | Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 97.0 | 3.0 | Radial longitudinal section | The bottom sapwood | 100×100 | 97.2 | 2.8 | Radial longitudinal section | The bottom heartwood |
| 100×100 | 97.3 | 2.7 | Radial longitudinal section | The middle part sapwood | 100×100 | 97.3 | 2.7 | Radial longitudinal section | The middle part heartwood |
| 100×100 | 97.3 | 2.7 | Radial longitudinal section | The top sapwood | 100×100 | 97.5 | 2.5 | Radial longitudinal section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 77.5 | 3.1 | Radial longitudinal section | The bottom sapwood | 80×80 | 77.6 | 3.0 | Radial longitudinal section | The bottom heartwood |
| 80×80 | 77.7 | 2.9 | Radial longitudinal section | The middle part sapwood | 80×80 | 77.7 | 2.9 | Radial longitudinal section | The middle part heartwood |
| 80×80 | 77.8 | 2.7 | Radial longitudinal section | The top sapwood | 80×80 | 77.7 | 2.9 | Radial longitudinal section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 48.4 | 3.3 | Radial longitudinal section | The bottom sapwood | 50×50 | 48.5 | 3.0 | Radial longitudinal section | The bottom heartwood |
| 50×50 | 48.1 | 3.8 | Radial longitudinal section | The middle part sapwood | 50×50 | 48.3 | 3.4 | Radial longitudinal section | The middle part heartwood |
| 50×50 | 48.1 | 3.8 | Radial longitudinal section | The top sapwood | 50×50 | 48.1 | 3.9 | Radial longitudinal section | The top heartwood |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 94.6 | 5.4 | Tangential section | The bottom sapwood | 100×100 | 95.0 | 5.0 | Tangential section | The bottom heartwood |
| 100×100 | 95.0 | 5.0 | Tangential section | The middle part sapwood | 100×100 | 94.7 | 5.3 | Tangential section | The middle part heartwood |
| 100×100 | 95.3 | 4.7 | Tangential section | The top sapwood | 100×100 | 94.0 | 6.0 | Tangential section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 75.4 | 5.7 | Tangential section | The bottom sapwood | 80×80 | 75.8 | 5.2 | Tangential section | The bottom heartwood |
| 80×80 | 75.8 | 5.2 | Tangential section | The middle part sapwood | 80×80 | 75.8 | 5.2 | Tangential section | The middle part heartwood |
| 80×80 | 76.1 | 4.9 | Tangential section | The top sapwood | 80×80 | 76.6 | 4.3 | Tangential section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 47.1 | 5.8 | Tangential section | The bottom sapwood | 50×50 | 47.2 | 5.6 | Tangential section | The bottom heartwood |
| 50×50 | 46.9 | 6.2 | Tangential section | The middle part sapwood | 50×50 | 46.9 | 6.3 | Tangential section | The middle part heartwood |
| 50×50 | 47.0 | 6.0 | Tangential section | The top sapwood | 50×50 | 46.9 | 6.3 | Tangential section | The top heartwood |
Cathay poplar greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
| Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position | Size up mm | Average drying shrinkage size | ％ | Tangent plane | The trunk position |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 95.6 | 4.4 | Radial longitudinal section | The bottom sapwood | 100×100 | 95.7 | 4.3 | Radial longitudinal section | The bottom heartwood |
| 100×100 | 96.0 | 4.0 | Radial longitudinal section | The middle part sapwood | 100×100 | 96.0 | 4.0 | Radial longitudinal section | The middle part heartwood |
| 100×100 | 96.0 | 4.0 | Radial longitudinal section | The top sapwood | 100×100 | 96.0 | 4.0 | Radial longitudinal section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 76.2 | 4.7 | Radial longitudinal section | The bottom sapwood | 80×80 | 76.7 | 4.1 | Radial longitudinal section | The bottom heartwood |
| 80×80 | 76.6 | 4.3 | Radial longitudinal section | The middle part sapwood | 80×80 | 77.0 | 3.7 | Radial longitudinal section | The middle part heartwood |
| 80×80 | 76.8 | 4.0 | Radial longitudinal section | The top sapwood | 80×80 | 77.0 | 3.7 | Radial longitudinal section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 47.7 | 4.7 | Radial longitudinal section | The bottom sapwood | 50×50 | 47.7 | 4.6 | Radial longitudinal section | The bottom heartwood |
| 50×50 | 48.0 | 4.0 | Radial longitudinal section | The middle part sapwood | 50×50 | 47.7 | 4.6 | Radial longitudinal section | The middle part heartwood |
| 50×50 | 47.9 | 4.2 | Radial longitudinal section | The top sapwood | 50×50 | 48.0 | 4.0 | Radial longitudinal section | The top heartwood |
| Former size class: more than the 36cm | Former size class: more than the 36cm | ||||||||
| 100×100 | 93.4 | 6.6 | Tangential section | The bottom sapwood | 100×100 | 94.0 | 6.0 | Tangential section | The bottom heartwood |
| 100×100 | 93.7 | 6.3 | Tangential section | The middle part sapwood | 100×100 | 94.0 | 6.0 | Tangential section | The middle part heartwood |
| 100×100 | 93.7 | 6.3 | Tangential section | The top sapwood | 100×100 | 94.6 | 5.4 | Tangential section | The top heartwood |
| Former size class: 20cm～34cm | Former size class: 20cm～34cm | ||||||||
| 80×80 | 75.1 | 6.1 | Tangential section | The bottom sapwood | 80×80 | 75.4 | 5.8 | Tangential section | The bottom heartwood |
| 80×80 | 75.1 | 6.1 | Tangential section | The middle part sapwood | 80×80 | 75.4 | 5.8 | Tangential section | The middle part heartwood |
| 80×80 | 75.7 | 5.4 | Tangential section | The top sapwood | 80×80 | 76.0 | 5.0 | Tangential section | The top heartwood |
| Former size class: below the 18cm | Former size class: below the 18cm | ||||||||
| 50×50 | 47.0 | 6.0 | Tangential section | The bottom sapwood | 50×50 | 47.0 | 6.0 | Tangential section | The bottom heartwood |
| 50×50 | 47.0 | 6.0 | Tangential section | The middle part sapwood | 50×50 | 47.0 | 6.0 | Tangential section | The middle part heartwood |
| 50×50 | 47.4 | 5.3 | Tangential section | The top sapwood | 50×50 | 47.2 | 5.6 | Tangential section | The top heartwood |
Claims (2)
1, the differential drying shrinkage splicing method in a kind of wood deep processing, its method is:
A, in the manufacturing procedure process of becoming a useful person, adopt contract with dry rate control processing specification table, the manufactured goods blank gauge lattice of checking out;
B, between drying and manufacturing procedure, increase the operation of selecting materials, select identical, close seeds for use, the blank material assembly that tangent plane is identical is promptly selected identical, the close blank material assembly of ratio of tangential to radial shrinkage for use.
2, the differential drying shrinkage splicing method in a kind of wood deep processing according to claim 1, the moisture content difference dry shrinkage table of its method is:
Korean pine greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
Size up mm Average drying shrinkage size ％ Tangent plane The trunk position Size up mm Average drying shrinkage size ％ Tangent plane The trunk position
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 97.3 2.7 Radial longitudinal section The bottom sapwood 100×100 98.4 1.6 Radial longitudinal section The bottom heartwood
100×100 98.1 1.9 Radial longitudinal section The middle part sapwood 100×100 98.8 1.2 Radial longitudinal section The middle part heartwood
100×100 97.2 2.8 Radial longitudinal section The top sapwood 100×100 97.4 2.6 Radial longitudinal section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 77.4 3.1 Radial longitudinal section The bottom sapwood 80×80 77.8 2.8 Radial longitudinal section The bottom heartwood
80×80 77.9 2.6 Radial longitudinal section The middle part sapwood 80×80 78.2 2.2 Radial longitudinal section The middle part heartwood
80×80 77.6 3.0 Radial longitudinal section The top sapwood 80×80 78.2 2.2 Radial longitudinal section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 48.3 3.4 Radial longitudinal section The bottom sapwood 50×50 48.4 3.2 Radial longitudinal section The bottom heartwood
50×50 48.5 3.0 Radial longitudinal section The middle part sapwood 50×50 48.8 2.4 Radial longitudinal section The middle part heartwood
50×50 48.2 3.7 Radial longitudinal section The top sapwood 50×50 48.5 3.0 Radial longitudinal section The top heartwood
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 93.7 6.3 Tangential section The bottom sapwood 100×100 94.9 5.1 Tangential section The bottom heartwood
100×100 94.0 6.0 Tangential section The middle part sapwood 100×100 94.5 5.5 Tangential section The middle part heartwood
100×100 94.6 5.4 Tangential section The top sapwood 100×100 94.0 6.0 Tangential section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 74.6 6.8 Tangential section The bottom sapwood 80×80 75.0 6.2 Tangential section The bottom heartwood
80×80 74.9 6.3 Tangential section The middle part sapwood 80×80 75.0 6.1 Tangential section The middle part heartwood
80×80 75.9 5.1 Tangential section The top sapwood 80×80 76.0 5.0 Tangential section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 47.0 6.0 Tangential section The bottom sapwood 50×50 47.1 5.8 Tangential section The bottom heartwood
50×50 47.0 6.1 Tangential section The middle part sapwood 50×50 47.4 5.3 Tangential section The middle part heartwood
50×50 47.2 5.5 Tangential section The top sapwood 50×50 47.5 5.0 Tangential section The top heartwood
Fish-scale floss can be shown with reference to this
Abies holophylla greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
Size up mm Average drying shrinkage size ％ Tangent plane The trunk position Size up mm Average drying shrinkage size ％ Tangent plane The trunk position
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 95.5 4.5 Radial longitudinal section The bottom sapwood 100×100 95.8 4.2 Radial longitudinal section The bottom heartwood
100×100 95.9 4.1 Radial longitudinal section The middle part sapwood 100×100 96.3 3.7 Radial longitudinal section The middle part heartwood
100×100 96.7 3.3 Radial longitudinal section The top sapwood 100×100 94.7 3.3 Radial longitudinal section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 76.2 4.8 Radial longitudinal section The bottom sapwood 80×80 76.5 4.4 Radial longitudinal section The bottom heartwood
80×80 76.5 4.4 Radial longitudinal section The middle part sapwood 80×80 76.8 4.0 Radial longitudinal section The middle part heartwood
80×80 76.8 4.0 Radial longitudinal section The top sapwood 80×80 77.1 3.6 Radial longitudinal section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 47.5 5.0 Radial longitudinal section The bottom sapwood 50×50 47.6 4.8 Radial longitudinal section The bottom heartwood
50×50 47.7 4.6 Radial longitudinal section The middle part sapwood 50×50 47.8 4.5 Radial longitudinal section The middle part heartwood
50×50 48.0 4.1 Radial longitudinal section The top sapwood 50×50 47.9 4.2 Radial longitudinal section The top heartwood
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 92.7 7.3 Tangential section The bottom sapwood 100×100 93.2 6.8 Tangential section The bottom heartwood
100×100 93.0 7.0 Tangential section The middle part sapwood 100×100 93.7 6.3 Tangential section The middle part heartwood
100×100 93.6 6.4 Tangential section The top sapwood 100×100 94.3 5.7 Tangential section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 73.7 7.9 Tangential section The bottom sapwood 80×80 74.4 7.0 Tangential section The bottom heartwood
80×80 74.2 7.3 Tangential section The middle part sapwood 80×80 74.6 6.7 Tangential section The middle part heartwood
80×80 74.4 7.0 Tangential section The top sapwood 80×80 74.7 6.6 Tangential section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 45.8 8.4 Tangential section The bottom sapwood 50×50 46.3 7.5 Tangential section The bottom heartwood
50×50 46.1 7.8 Tangential section The middle part sapwood 50×50 46.5 7.1 Tangential section The middle part heartwood
50×50 46.3 7.4 Tangential section The top sapwood 50×50 46.5 7.0 Tangential section The top heartwood
Larch can be shown with reference to this
Smelly loose greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
Size up mm Average drying shrinkage size ％ Tangent plane The trunk position Size up mm Average drying shrinkage size ％ Tangent plane The trunk position
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 94.5 5.5 Radial longitudinal section The bottom sapwood 100×100 95.7 4.3 Radial longitudinal section The bottom heartwood
100×100 94.9 5.1 Radial longitudinal section The middle part sapwood 100×100 96.0 4.0 Radial longitudinal section The middle part heartwood
100×100 95.4 4.6 Radial longitudinal section The top sapwood 100×100 96.4 3.6 Radial longitudinal section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 75.3 5.9 Radial longitudinal section The bottom sapwood 80×80 76.1 4.9 Radial longitudinal section The bottom heartwood
80×80 75.7 5.4 Radial longitudinal section The middle part sapwood 80×80 76.5 4.4 Radial longitudinal section The middle part heartwood
80×80 75.9 5.1 Radial longitudinal section The top sapwood 80×80 77.0 3.8 Radial longitudinal section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 47.0 6.1 Radial longitudinal section The bottom sapwood 50×50 47.5 5.0 Radial longitudinal section The bottom heartwood
50×50 47.2 5.7 Radial longitudinal section The middle part sapwood 50×50 47.8 4.5 Radial longitudinal section The middle part heartwood
50×50 47.3 5.4 Radial longitudinal section The top sapwood 50×50 48.1 3.9 Radial longitudinal section The top heartwood
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 91.9 8.1 Tangential section The bottom sapwood 100×100 92.5 7.5 Tangential section The bottom heartwood
100×100 92.3 5.7 Tangential section The middle part sapwood 100×100 93.0 7.0 Tangential section The middle part heartwood
100×100 93.0 7.0 Tangential section The top sapwood 100×100 94.3 6.7 Tangential section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 73.1 8.6 Tangential section The bottom sapwood 80×80 73.8 7.7 Tangential section The bottom heartwood
80×80 73.3 8.4 Tangential section The middle part sapwood 80×80 74.1 7.4 Tangential section The middle part heartwood
80×80 73.6 8.0 Tangential section The top sapwood 80×80 74.4 7.0 Tangential section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 45.5 9.0 Tangential section The bottom sapwood 50×50 46.0 8.0 Tangential section The bottom heartwood
50×50 45.7 8.6 Tangential section The middle part sapwood 50×50 46.2 7.7 Tangential section The middle part heartwood
50×50 46.0 81 Tangential section The top sapwood 50×50 46.5 7.1 Tangential section The top heartwood
Manchurian ash greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
Size up mm Average drying shrinkage size ％ Tangent plane The trunk position Size up mm Average drying shrinkage size ％ Tangent plane The trunk position
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 95.7 4.3 Radial longitudinal section The bottom sapwood 100×100 95.9 4.1 Radial longitudinal section The bottom heartwood
100×100 95.9 4.1 Radial longitudinal section The middle part sapwood 100×100 96.1 3.9 Radial longitudinal section The middle part heartwood
100×100 96.4 3.6 Radial longitudinal section The top sapwood 100×100 96.9 3.1 Radial longitudinal section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 76.1 4.9 Radial longitudinal section The bottom sapwood 80×80 76.6 4.3 Radial longitudinal section The bottom heartwood
80×80 76.5 4.4 Radial longitudinal section The middle part sapwood 80×80 76.8 4.0 Radial longitudinal section The middle part heartwood
80×80 76.8 4.0 Radial longitudinal section The top sapwood 80×80 77.4 3.2 Radial longitudinal section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 47.4 5.3 Radial longitudinal section The bottom sapwood 50×50 47.5 5.0 Radial longitudinal section The bottom heartwood
50×50 47.6 4.8 Radial longitudinal section The middle part sapwood 50×50 47.8 4.5 Radial longitudinal section The middle part heartwood
50×50 47.9 4.3 Radial longitudinal section The top sapwood 50×50 48.0 4.0 Radial longitudinal section The top heartwood
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 91.3 8.7 Tangential section The bottom sapwood 100×100 91.7 8.3 Tangential section The bottom heartwood
100×100 91.8 8.2 Tangential section The middle part sapwood 100×100 92.0 8.0 Tangential section The middle part heartwood
100×100 92.2 7.8 Tangential section The top sapwood 100×100 .92.5 7.5 Tangential section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 72.8 9.0 Tangential section The bottom sapwood 80×80 73.1 8.6 Tangential section The bottom heartwood
80×80 73.0 8.8 Tangential section The middle part sapwood 80×80 73.6 8.0 Tangential section The middle part heartwood
80×80 73.3 8.4 Tangential section The top sapwood 80×80 74.1 7.4 Tangential section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 45.3 9.4 Tangential section The bottom sapwood 50×50 45.5 9.0 Tangential section The bottom heartwood
50×50 45.5 9.0 Tangential section The middle part sapwood 50×50 45.7 8.6 Tangential section The middle part heartwood
50×50 45.7 8.6 Tangential section The top sapwood 50×50 46.0 8.0 Tangential section The top heartwood
Toothed oak wood greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
Size up mm Average drying shrinkage size ％ Tangent plane The trunk position Size up mm Average drying shrinkage size ％ Tangent plane The trunk position
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 95.5 4.5 Radial longitudinal section The bottom sapwood 100×100 95.6 4.4 Radial longitudinal section The bottom heartwood
100×100 95.8 4.2 Radial longitudinal section The middle part sapwood 100×100 96.3 3.7 Radial longitudinal section The middle part heartwood
100×100 96.1 3.9 Radial longitudinal section The top sapwood 100×100 97.0 3.0 Radial longitudinal section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 75.9 5.1 Radial longitudinal section The bottom sapwood 80×80 76.5 4.4 Radial longitudinal section The bottom heartwood
80×80 76.2 4.8 Radial longitudinal section The middle part sapwood 80×80 76.7 4.1 Radial longitudinal section The middle part heartwood
80×80 76.6 4.3 Radial longitudinal section The top sapwood 80×80 77.6 3.0 Radial longitudinal section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 47.3 5.5 Radial longitudinal section The bottom sapwood 50×50 47.4 5.2 Radial longitudinal section The bottom heartwood
50×50 47.7 4.7 Radial longitudinal section The middle part sapwood 50×50 47.7 4.7 Radial longitudinal section The middle part heartwood
50×50 48.0 4.0 Radial longitudinal section The top sapwood 50×50 48.0 4.1 Radial longitudinal section The top heartwood
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 91.1 8.9 Tangential section The bottom sapwood 100×100 91.4 8.6 Tangential section The bottom heartwood
100×100 91.4 8.6 Tangential section The middle part sapwood 100×100 91.9 8.1 Tangential section The middle part heartwood
100×100 91.9 8.1 Tangential section The top sapwood 100×100 92.2 7.8 Tangential section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 72.6 9.2 Tangential section The bottom sapwood 80×80 72.8 9.0 Tangential section The bottom heartwood
80×80 73.0 8.7 Tangential section The middle part sapwood 80×80 73.1 8.6 Tangential section The middle part heartwood
80×80 73.5 8.1 Tangential section The top sapwood 80×80 73.5 8.1 Tangential section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 45.2 9.6 Tangential section The bottom sapwood 50×50 45.4 9.2 Tangential section The bottom heartwood
50×50 45.4 9.2 Tangential section The middle part sapwood 50×50 45.5 9.0 Tangential section The middle part heartwood
50×50 45.5 9.0 Tangential section The top sapwood 50×50 45.8 8.5 Tangential section The top heartwood
Elm greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
Size up mm Average drying shrinkage size ％ Tangent plane The trunk position Size up mm Average drying shrinkage size ％ Tangent plane The trunk position
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 96.7 3.3 Radial longitudinal section The bottom sapwood 100×100 97.0 3.0 Radial longitudinal section The bottom heartwood
100×100 97.0 3.0 Radial longitudinal section The middle part sapwood 100×100 97.4 2.6 Radial longitudinal section The middle part heartwood
100×100 97.4 2.6 Radial longitudinal section The top sapwood 100×100 97.9 2.1 Radial longitudinal section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 77.0 3.7 Radial longitudinal section The bottom sapwood 80×80 77.3 3.4 Radial longitudinal section The bottom heartwood
80×80 77.5 3.1 Radial longitudinal section The middle part sapwood 80×80 77.6 2.9 Radial longitudinal section The middle part heartwood
80×80 77.5 3.0 Radial longitudinal section The top sapwood 80×80 77.6 2.9 Radial longitudinal section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 48.0 4.0 Radial longitudinal section The bottom sapwood 50×50 48.0 4.0 Radial longitudinal section The bottom heartwood
50×50 48.0 4.0 Radial longitudinal section The middle part sapwood 50×50 48.2 3.6 Radial longitudinal section The middle part heartwood
50×50 48.3 3.5 Radial longitudinal section The top sapwood 50×50 48.2 3.6 Radial longitudinal section The top heartwood
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 92.8 7.2 Tangential section The bottom sapwood 100×100 93.3 6.7 Tangential section The bottom heartwood
100×100 93.9 6.1 Tangential section The middle part sapwood 100×100 93.3 6.7 Tangential section The middle part heartwood
100×100 93.9 6.1 Tangential section The top sapwood 100×100 94.0 6.0 Tangential section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 73.8 7.8 Tangential section The bottom sapwood 80×80 74.4 7.0 Tangential section The bottom heartwood
80×80 74.4 7.0 Tangential section The middle part sapwood 80×80 75.0 6.3 Tangential section The middle part heartwood
80×80 74.9 6.4 Tangential section The top sapwood 80×80 75.2 6.0 Tangential section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 46.0 8.0 Tangential section The bottom sapwood 50×50 46.3 7.4 Tangential section The bottom heartwood
50×50 46.2 7.7 Tangential section The middle part sapwood 50×50 46.5 7.0 Tangential section The middle part heartwood
50×50 46.5 7.0 Tangential section The top sapwood 50×50 46.7 6.7 Tangential section The top heartwood
Walnut autumn greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
Size up mm Average drying shrinkage size ％ Tangent plane The trunk position Size up mm Average drying shrinkage size ％ Tangent plane The trunk position
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 95.2 4.8 Radial longitudinal section The bottom sapwood 100×100 95.5 4.5 Radial longitudinal section The bottom heartwood
100×100 95.7 4.3 Radial longitudinal section The middle part sapwood 100×100 96.0 4.0 Radial longitudinal section The middle part heartwood
100×100 96.1 3.9 Radial longitudinal section The top sapwood 100×100 96.0 4.0 Radial longitudinal section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 76.1 4.9 Radial longitudinal section The bottom sapwood 80×80 75.8 5.2 Radial longitudinal section The bottom heartwood
80×80 76.8 4.0 Radial longitudinal section The middle part sapwood 80×80 75.8 5.2 Radial longitudinal section The middle part heartwood
80×80 76.8 4.0 Radial longitudinal section The top sapwood 80×80 76.2 4.7 Radial longitudinal section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 47.5 5.0 Radial longitudinal section The bottom sapwood 50×50 47.5 4.8 Radial longitudinal section The bottom heartwood
50×50 47.5 5.0 Radial longitudinal section The middle part sapwood 50×50 47.9 4.2 Radial longitudinal section The middle part heartwood
50×50 47.9 4.3 Radial longitudinal section The top sapwood 50×50 48.0 4.0 Radial longitudinal section The top heartwood
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 92.3 7.7 Tangential section The bottom sapwood 100×100 92.4 7.6 Tangential section The bottom heartwood
100×100 92.7 7.3 Tangential section The middle part sapwood 100×100 93.0 7.0 Tangential section The middle part heartwood
100×100 92.7 7.3 Tangential section The top sapwood 100×100 93.0 7.0 Tangential section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 73.0 8.7 Tangential section The bottom sapwood 80×80 73.2 8.5 Tangential section The bottom heartwood
80×80 73.6 8.0 Tangential section The middle part sapwood 80×80 73.2 8.5 Tangential section The middle part heartwood
80×80 73.6 8.0 Tangential section The top sapwood 80×80 73.6 8.0 Tangential section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 45.6 8.9 Tangential section The bottom sapwood 50×50 45.7 8.7 Tangential section The bottom heartwood
50×50 45.8 8.4 Tangential section The middle part sapwood 50×50 45.9 8.2 Tangential section The middle part heartwood
50×50 45.6 8.9 Tangential section The top sapwood 50×50 46.1 7.8 Tangential section The top heartwood
Linden greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
Size up mm Average drying shrinkage size ％ Tangent plane The trunk position Size up mm Average drying shrinkage size ％ Tangent plane The trunk position
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 94.9 5.1 Radial longitudinal section The bottom sapwood 100×100 95.2 4.8 Radial longitudinal section The bottom heartwood
100×100 95.2 4.8 Radial longitudinal section The middle part sapwood 100×100 95.7 4.3 Radial longitudinal section The middle part heartwood
100×100 95.7 4.3 Radial longitudinal section The top sapwood 100×100 96.0 4.0 Radial longitudinal section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 75.7 5.4 Radial longitudinal section The bottom sapwood 80×80 75.9 5.1 Radial longitudinal section The bottom heartwood
80×80 76.0 5.0 Radial longitudinal section The middle part sapwood 80×80 76.2 4.7 Radial longitudinal section The middle part heartwood
80×80 76.5 4.4 Radial longitudinal section The top sapwood 80×80 76.7 4.1 Radial longitudinal section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 47.2 5.7 Radial longitudinal section The bottom sapwood 50×50 47.4 5.3 Radial longitudinal section The bottom heartwood
50×50 47.4 5.3 Radial longitudinal section The middle part sapwood 50×50 47.5 5.0 Radial longitudinal section The middle part heartwood
50×50 47.6 4.9 Radial longitudinal section The top sapwood 50×50 47.9 4.3 Radial longitudinal section The top heartwood
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 92.9 7.1 Tangential section The bottom sapwood 100×100 93.0 7.0 Tangential section The bottom heartwood
100×100 93.3 6.7 Tangential section The middle part sapwood 100×100 93.4 6.6 Tangential section The middle part heartwood
100×100 93.8 6.2 Tangential section The top sapwood 100×100 94.0 6.0 Tangential section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 73.8 7.8 Tangential section The bottom sapwood 80×80 74.2 7.2 Tangential section The bottom heartwood
80×80 74.2 7.3 Tangential section The middle part sapwood 80×80 74.6 6.8 Tangential section The middle part heartwood
80×80 74.5 6.9 Tangential section The top sapwood 80×80 75.0 6.3 Tangential section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 46.0 7.9 Tangential section The bottom sapwood 50×50 46.2 7.7 Tangential section The bottom heartwood
50×50 46.4 7.2 Tangential section The middle part sapwood 50×50 46.6 6.9 Tangential section The middle part heartwood
50×50 46.5 7.0 Tangential section The top sapwood 50×50 46.7 6.7 Tangential section The top heartwood
White poplar can be with reference to these data
Maple wood, maple birch greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
Size up mm Average drying shrinkage size ％ Tangent plane The trunk position Size up mm Average drying shrinkage size ％ Tangent plane The trunk position
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 97.0 3.0 Radial longitudinal section The bottom sapwood 100×100 97.2 2.8 Radial longitudinal section The bottom heartwood
100×100 97.3 2.7 Radial longitudinal section The middle part sapwood 100×100 97.3 2.7 Radial longitudinal section The middle part heartwood
100×100 97.3 2.7 Radial longitudinal section The top sapwood 100×100 97.5 2.5 Radial longitudinal section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 77.5 3.1 Radial longitudinal section The bottom sapwood 80×80 77.6 3.0 Radial longitudinal section The bottom heartwood
80×80 77.7 2.9 Radial longitudinal section The middle part sapwood 80×80 77.7 2.9 Radial longitudinal section The middle part heartwood
80×80 77.8 2.7 Radial longitudinal section The top sapwood 80×80 77.7 2.9 Radial longitudinal section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 48.4 3.3 Radial longitudinal section The bottom sapwood 50×50 48.5 3.0 Radial longitudinal section The bottom heartwood
50×50 48.1 3.8 Radial longitudinal section The middle part sapwood 50×50 48.3 3.4 Radial longitudinal section The middle part heartwood
50×50 48.1 3.8 Radial longitudinal section The top sapwood 50×50 48.1 3.9 Radial longitudinal section The top heartwood
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 94.6 5.4 Tangential section The bottom sapwood 100×100 95.0 5.0 Tangential section The bottom heartwood
100×100 95.0 5.0 Tangential section The middle part sapwood 100×100 94.7 5.3 Tangential section The middle part heartwood
100×100 95.3 4.7 Tangential section The top sapwood 100×100 94.0 6.0 Tangential section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 75.4 5.7 Tangential section The bottom sapwood 80×80 75.8 5.2 Tangential section The bottom heartwood
80×80 75.8 5.2 Tangential section The middle part sapwood 80×80 75.8 5.2 Tangential section The middle part heartwood
80×80 76.1 4.9 Tangential section The top sapwood 80×80 76.6 4.3 Tangential section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 47.1 5.8 Tangential section The bottom sapwood 50×50 47.2 5.6 Tangential section The bottom heartwood
50×50 46.9 6.2 Tangential section The middle part sapwood 50×50 46.9 6.3 Tangential section The middle part heartwood
50×50 47.0 6.0 Tangential section The top sapwood 50×50 46.9 6.3 Tangential section The top heartwood
Cathay poplar greenwood-2 grade (9～11%) moisture content difference dry shrinkage table
Size up mm Average drying shrinkage size ％ Tangent plane The trunk position Size up mm Average drying shrinkage size ％ Tangent plane The trunk position
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 95.6 4.4 Radial longitudinal section The bottom sapwood 100×100 95.7 4.3 Radial longitudinal section The bottom heartwood
100×100 96.0 4.0 Radial longitudinal section The middle part sapwood 100×100 96.0 4.0 Radial longitudinal section The middle part heartwood
100×100 96.0 4.0 Radial longitudinal section The top sapwood 100×100 96.0 4.0 Radial longitudinal section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 76.2 4.7 Radial longitudinal section The bottom sapwood 80×80 76.7 4.1 Radial longitudinal section The bottom heartwood
80×80 76.6 4.3 Radial longitudinal section The middle part sapwood 80×80 77.0 3.7 Radial longitudinal section The middle part heartwood
80×80 76.8 4.0 Radial longitudinal section The top sapwood 80×80 77.0 3.7 Radial longitudinal section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 47.7 4.7 Radial longitudinal section The bottom sapwood 50×50 47.7 4.6 Radial longitudinal section The bottom heartwood
50×50 48.0 4.0 Radial longitudinal section The middle part sapwood 50×50 47.7 4.6 Radial longitudinal section The middle part heartwood
50×50 47.9 4.2 Radial longitudinal section The top sapwood 50×50 48.0 4.0 Radial longitudinal section The top heartwood
Former size class: more than the 36cm Former size class: more than the 36cm
100×100 93.4 6.6 Tangential section The bottom sapwood 100×100 94.0 6.0 Tangential section The bottom heartwood
100×100 93.7 6.3 Tangential section The middle part sapwood 100×100 94.0 6.0 Tangential section The middle part heartwood
100×100 93.7 6.3 Tangential section The top sapwood 100×100 94.6 5.4 Tangential section The top heartwood
Former size class: 20cm～34cm Former size class: 20cm～34cm
80×80 75.1 6.1 Tangential section The bottom sapwood 80×80 75.4 5.8 Tangential section The bottom heartwood
80×80 75.1 6.1 Tangential section The middle part sapwood 80×80 75.4 5.8 Tangential section The middle part heartwood
80×80 75.7 5.4 Tangential section The top sapwood 80×80 76.0 5.0 Tangential section The top heartwood
Former size class: below the 18cm Former size class: below the 18cm
50×50 47.0 6.0 Tangential section The bottom sapwood 50×50 47.0 6.0 Tangential section The bottom heartwood
50×50 47.0 6.0 Tangential section The middle part sapwood 50×50 47.0 6.0 Tangential section The middle part heartwood
50×50 47.4 5.3 Tangential section The top sapwood 50×50 47.2 5.6 Tangential section The top heartwood
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510016649 CN1836855A (en) | 2005-03-25 | 2005-03-25 | Differential drying shrinkage splicing method in timber deep processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510016649 CN1836855A (en) | 2005-03-25 | 2005-03-25 | Differential drying shrinkage splicing method in timber deep processing |
Publications (1)
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| CN1836855A true CN1836855A (en) | 2006-09-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105479573A (en) * | 2014-10-11 | 2016-04-13 | 彰武县寰宝木业有限公司 | Preparation technology for elm furniture boards |
| CN112265097A (en) * | 2020-09-30 | 2021-01-26 | 海宁普瑞杰玩具开发有限公司 | Wood connecting method utilizing wood drying shrinkage |
-
2005
- 2005-03-25 CN CN 200510016649 patent/CN1836855A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105479573A (en) * | 2014-10-11 | 2016-04-13 | 彰武县寰宝木业有限公司 | Preparation technology for elm furniture boards |
| CN105479573B (en) * | 2014-10-11 | 2019-03-12 | 彰武县寰宝木业有限公司 | A kind of preparation process of elm Furniture panel |
| CN112265097A (en) * | 2020-09-30 | 2021-01-26 | 海宁普瑞杰玩具开发有限公司 | Wood connecting method utilizing wood drying shrinkage |
| CN112265097B (en) * | 2020-09-30 | 2022-04-26 | 海宁普瑞杰玩具开发有限公司 | Wood connecting method utilizing wood drying shrinkage |
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