Microwave vacuum drying process of wood for solid wood ground heating flooring

Abstract

The invention discloses microwave vacuum drying process of wood for solid wood ground heating flooring. The microwave vacuum drying process comprises the following steps that a. the wood is placed into microwave processing equipment and the equipment is started; b, an accelerating drying stage is carried out, specifically, when the wood moisture content is more than 40-50%, first-time microwave radiation treatment is carried out on the wood, the radiation power is 1.3-1.6KW, the vacuum degree is adjusted to -0.065-(-0.07)Mpa, the radiation time is 4-6min, and the drying rate is maintained at 1.30-1.40% / min; c, a constant-speed drying stage is carried out, specifically, when the wood moisture content is between 45%-25%, second-time microwave radiation treatment is performed on the wood, theradiation power is 0.8-1.2KW, the vacuum degree is maintained at -0.055-(-0.065)Mpa, the radiation time is 18-25min, and the drying rate is maintained at 0.90-1% / min; d, a reduced drying stage is carried out, specifically, when the wood moisture content is less than 20-25%, the wood is subjected to third-time microwave radiation treatment, the radiation power is 0.4-0.7KW, the vacuum degree is maintained at -0.050-(-0.055)Mpa, the radiation time is 13-17min, and the drying rate is maintained at 0.5-0.6% / min; and e, a cooling stage is carried out, specifically, the wood is subjected to coolingto complete the microwave treatment process of the flooring.

Description

technical field [0001] The invention relates to a wood microwave vacuum drying process for solid wood floor heating, and relates to the field of wood floor and furniture manufacturing. Background technique [0002] In recent years, with the improvement of people's consumption level, people pay more and more attention to high-quality home life experience, and high-end home products are gradually popularized. Natural advantages such as comfortable feet, warm in winter and cool in summer, quiet and non-slip, and temperature and humidity adjustment can significantly improve the comfort of the living room environment; Solid wood flooring is the first choice for floor heating. In addition, solid wood floor heating maintains the natural properties of wood, with natural and beautiful patterns and unique texture aesthetics. This is a quality that wood-based panels and ceramic tiles do not have. From the "floor heating hazard theory" spread on the Internet in 2014, the "American pois...

AI Technical Summary

Problems solved by technology

However, due to the problems of long drying time, high energy consumption, poor drying quality and serious pollution, conventional wood drying methods cannot meet the market demand and environmental protection requirements well. Therefore, people began to seek and study new wood drying technologies to meet the needs Other auxiliary effects

Microwave vacuum drying technology originated in the 1930s and became a hot spot in the world due to the discovery of its thermal effect. Then in the 1960s and 1970s, many countries began to apply this technology to wood drying. Immature, although it can significantly increase the drying rate of wood, it is easy to damage the wood, cannot effectively guarantee the quality of wood after drying, and is difficult to achieve large-scale industrialization