STUDY OF DETERMINING A BENDING REGIME OF RUBBER WOOD FOR WOODEN PRODUCTS

Abstract

This study was conducted to determine a bending regime of Rubber wood for furniture production (21×35×460) mm (thickness×width×length) mm, R700mm by shaped molding method using steam heating, bending temperature 100-105⁰C, bending pressure 6kG/cm². The experiment was designed completely random. The experimentals results dertermined related equations in order to predict boiling time and bending time on a failure rate Y₁ and a elasticity of curvature Y₂.

Y₁= 1,36 – 0,95X₁ – 1,45X₂ + 0,58X₁X₂ + 0,94X₁² + 1,84X₂²

Y₂ = 0,83 – 0,70X₁ – 0,93X₂ + 0,93 X₁² + 0,79 X₂²

The resuls of solving optimal problem gave optimal regimes of bending process: at boiling time 28,4 minutes, bending time 42,9 minutes, a failure rate 1,36% and a elasticity of curvature 0,43mm. The process of bending curved wood details shall be applied to the actual application of the production, which is easily implemented and saving cost.