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

Abstract

This study was conducted to determine the bending mode of rubber wood with the size of 21×35×460 mm and bend radius R700 mm used in furniture manufacturing by the method of bending, shaping with steam heating, bending temperature 100-105 °C, bending pressure 6 kG/cm2 . The experiment was designed in a completely randomized design. Research results have built a correlation equation showing the relationship between steaming time and bending time with failure rate Y1 and the elasticity of the rubber wood Y2

Y1= 1,36 – 0,95X1 – 1,45X2 + 0,58X1X2 + 0,94X1 2 + 1,84X2 2

Y2 = 0,83 – 0,70X1 – 0,93X2 + 0,93 X1 2 + 0,79 X2 2

The results have determined the optimal parameters for rubber wood bending: corresponding to the steaming time of 28.4 minutes and the bending time of 43.9 minutes, the sample failure rate is 1.36% and the elasticity of the rubber wood 0.43 mm. The technological process of bending curved wood parts of the above dimensions can be completely applied in practice due to its simplicity, ease of implementation and low cost.