A Method for Reducing Drying Shrinkage of Wood Horizontal Grain
A wood shrinkage technology, applied in wood heating, wood treatment, wood heat treatment, etc., can solve the problems of wood strength loss, high cost, uneven treatment process, etc., and achieve the effect of reducing deformation and shrinkage difference
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0025] Step 1, using eucalyptus wood and adjusting its moisture content to 30%.
[0026] Step 2, place the eucalyptus in step 1 in a drying kiln, adjust the temperature in the kiln to 50°C, and slowly reduce the moisture content of the eucalyptus in this temperature environment; Apply a fixed pressure, the pressure value is 15% of the limit of elastic ratio along the grain.
[0027] In step three, the moisture content of the eucalyptus in step two is reduced to 15%, and the fixed pressure is continuously applied.
[0028] Step 4, place the eucalyptus in step 3 under vacuum conditions for flash heat treatment, the temperature is 160° C., the time is 10 minutes, the vacuum degree is 0.01 MPa, and the fixed pressure is continuously applied.
[0029] Step 5, after cooling the wood in step 4, fix the length, width and thickness, and inspect.
Embodiment 2
[0031] Step 1, adopt Chinese fir wood, and adjust its moisture content to 20%.
[0032] Step 2, put the fir in step 1 in an oven, adjust the temperature in the kiln to 70°C, and slowly reduce the moisture content of the fir in this temperature environment; while reducing the moisture content, apply fixation to the length and width of the fir. Pressure, the pressure value in the length direction is 5% of the elastic proportional limit along the grain, and the pressure value in the width direction is 10% of the transverse elastic proportional limit.
[0033] In step three, the moisture content of the Chinese fir in step two is reduced to 10%, and the fixed pressure is continuously applied.
[0034] Step 4, place the Chinese fir in step 3 under vacuum conditions for flash heat treatment, the temperature is 180°C, the time is 5min, the vacuum degree is 0.05MPa, and the constant pressure is continuously applied;
[0035] Step 5, after cooling the wood in step 4, fix the length, wi...
Embodiment 3
[0037] Step 1, adopt sylvestris pine wood, and adjust its moisture content to 30%.
[0038] Step 2, the sylvestris sylvestris in step 1 is placed in a constant temperature and humidity box, and the temperature in the kiln is adjusted to be 40°C, so that the sylvestris sylvestris slowly reduces the moisture content in the temperature environment; while reducing the moisture content, the A fixed pressure is applied in the length and thickness directions of Pinus sylvestris pine, the pressure value in the length direction is 10% of the elastic proportional limit along the grain, and the pressure value in the thickness direction is 10% of the transverse elastic proportional limit.
[0039] Step 3, reducing the moisture content of Pinus sylvestris in Step 2 to 8%, and applying constant pressure continuously.
[0040] Step 4, place the sylvestris sylvestris in step 3 in a vacuum condition for flash heat treatment, the temperature is 200°C, the time is 10min, the vacuum degree is 0.0...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com