More timber - less saw dust
|Luleå tekniska universitet - LTU Skellefteå
|Funding from Vinnova
|SEK 6 390 000
|March 2008 - June 2011
Purpose and goal
The costs for the raw material amount to about 70% of the total costs for most sawmills. Consequently it is very important to improve the saw yield for the economy and competitiveness of sawmills. The aim of this project is to build knowledge and develop methods and techniques that enable an increase of the sawing yield with 2 percent units. This yield increase will be achieved through thinner kerfs, adapted shrinkage allowance and lower sawing allowance. The main project idea is to control the sawing process based on the unique properties of every single log.
Results and expected effects
Through the project scientifically based methods for process control and manufacturing and maintenance of saw-blades will be developed and implemented in the industry. An increase of the sawing yield with 2 percent unit´s means that the total product value in the Swedish sawmills will increase with 1.2 billion Swedish crowns.
Approach and implementation
Most of the experimental work will be carried out at sawmills that are partners in the project. Work packages: 1. Equipment for measurement of board thickness and cross section profile. 2. Tooth shape studies. 3. Adapted shrinkage allowance 4. Process control based on wood properties 5. Saw-blade manufacturing and maintenance. 6. Optimal cutting parameters