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Why Do Solid Wood Panels Crack And Deform
Nov 28, 2018

What is the condition of cracking and deformation of solid wood panels?

Cracking refers to the cracking of the structure of the wood, which has affected the strength and use of the product. Although cracking and deformation are different, the root cause of the problem is the internal stress of the wood. Or start with a specific case to analyze:

As has been analyzed before, when the wood expands and contracts, the speed is inconsistent in all directions, which is the cause of cracking and deformation. At the same time, the internal stress is generated during the growth and drying of the tree. If the stress is not well balanced and released, the stress itself will cause deformation and cracking of the wood.

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There is also a specific reason. The factory did not understand the jigsaw process. The width of the strip was not controlled within 10 cm according to the specification, and the 20-30 cm plate was directly made into a jigsaw. The reason for controlling the width of the slats is to avoid excessive stress in the single-sheet material. The excessive stress generated by the excessively wide sheets cannot be balanced by the slabs, which will cause severe cracking. Another often overlooked specification is that the difference in moisture content of the slats must be within 2%. After the over-range, it will easily cause the sag to sink and greatly increase the risk of cracking.

What is the condition of cracking and deformation of solid wood panels?

Cracking refers to the cracking of the structure, the root cause of the problem is the internal stress of the wood. To analyze:

As has been analyzed before, when the wood expands and contracts, the speed is inconsistent in all directions, which is the cause of cracking and deformation. At the same time, the internal stress is generated during the growth and drying of the tree. The stress is not well balanced and released, the stress itself will disease deformation and cracking of the wood.

The factory did not understand the jigsaw process. The width of the strip was not controlled within 10 cm according to the specification, and the 20-30 cm plate was directly made into a jigsaw. The reason for controlling The excess of the slats is to avoid excessive stress in the single-sheet material. The excessive stress generated by the excessively wide sheets cannot be balanced by the slabs, which will cause severe cracking. Of the slats must be within 2%. After the over-range, it will easily cause the sag to sink and greatly increase the risk of cracking.

After the machining is completed, it is better to allow the white embryo to have a curing time of more than 24 hours before the upper coating line. In a humidity-controlled health room, the white embryo is allowed to have sufficient time and environmental humidity balance and release internal stress. This is especially true for large workpieces that have a large change in wood shape. This will greatly reduce the probability of deformation and cracking of the finished product.

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