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An investigation into chipped surface quality problems at canter lines

https://library.fpinnovations.ca/en/permalink/fpipub5565
Author
Wang, A.
Szathmary, G.
Date
September 2001
Edition
37595
Material Type
Research report
Field
Wood Manufacturing & Digitalization
the heads Clean-up sawing for top boards Yes Yes No Yes No Species SPF and Fir/L SPF and Fir/L
Author
Wang, A.
Szathmary, G.
Date
September 2001
Edition
37595
Material Type
Research report
Physical Description
28 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Studs
Saw mills
Equipment
Sawing
Quality control
Qualitative analysis
Series Number
2166
W-1807
Location
Vancouver, British Columbia
Language
English
Abstract
The purpose of this study is to investigate and record the principal problems associated with chipped surface quality at canter lines and evaluate degrade and value losses due to these problems. Mill measurements were conducted in five member sawmills in British Columbia to evaluate the value losses and lumber degrades due to chipped surface defects. The test lumber was sampled from the planing mills to identify the chipping losses and main problems. The five types of chipped surface defects influencing lumber grade are: knot tear-out; failure to remove chipped spline channel; torn grain without knots; scalloping; and chipped thin end. Average value losses for all mills were $11.4/MBF and $12.6/MBF in freezing and non-freezing conditions respectively. Removing the non-freezing data from one mill changed this to $11.4/MBF and $9.0/MBF respectively. Knot tear out caused 60% of lumber to be degraded. On average, over 55% of knots had tear-out. 42.3% of trim length was caused by failure to remove chipped spline channel.
Sawing - Quality control
Defects - Knots
Sawmilling studies
Sawmills - Equipment
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Essai opérationnel de trois outils dans des travaux d'élagage

https://library.fpinnovations.ca/en/permalink/fpipub40337
Author
St-Amour, Michel
Date
March 2001
Material Type
Research report
Field
Fibre Supply
Author
St-Amour, Michel
Date
March 2001
Material Type
Research report
Physical Description
4 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Saws
Sawing
Tools
Advantage
Series Number
Avantage ; Vol. 2, No. 11
Language
French
Abstract
Élagage
Outils d'élagage
Essais
Scie à élaguer manuelle
Guillotine motorisée
Scie à chaîne
Sécateur motorisé
Abstract
FERIC a étudié des opérations d'élagage dans des peuplements résineux afin de déterminer la productivité et le coût de traitement selon différents outils. Un outil manuel (scie à élaguer) et deux outils motorisés (guillotine et la scie à chaîne) ont été évalués. Les ouvriers préféraient la scie à élaguer qui donnait le coût de traitement le plus bas et le travail de meilleure qualité. La guillotine avait un coût de traitement comparable, mais elle laissait de grands bouts de branches. La scie à chaîne était le dernier choix des ouvriers; son coût de traitement était le plus élevé et elle causait les plus sérieuses blessures aux arbres.
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Huileurs conventionnels ou continus pour scie à chaîne d'abatteuse-façonneuse

https://library.fpinnovations.ca/en/permalink/fpipub40334
Author
McPhee, Brent
Date
February 2001
Material Type
Research report
Field
Fibre Supply
Author
McPhee, Brent
Date
February 2001
Material Type
Research report
Physical Description
2 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Saws
Sawing
Feller
Advantage
Series Number
Avantage ; Vol. 2, No. 3
Language
French
Abstract
Huileurs de scie à chaîne
Abatteuses-façonneuses
Lubrification
Huileur Easy Greasy GM220
Huileur Hultdins
Consommation d'huile
Étude comparative
Abstract
Les plus récents systèmes de lubrification pour les scies à chaîne d'abatteuse-façonneuse fournissent un débit continu d'huile en fonction des besoins de la chaîne, offrant ainsi la possibilité de réduire les coûts. FERIC a mesuré la consommation d'huile avec des huileurs conventionnels et continus, et a constaté que la période de récupération de l'investissement pouvait être aussi courte que 1,5 an pour un huileur continu installé au moment de l'achat et 2,5 ans lorsque monté après coup sur l'abatteuse-façonneuse.
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Improving bandsaw performance : effect of side grinding swaged bandsaws on cutting accuracy and surface finish

https://library.fpinnovations.ca/en/permalink/fpipub5567
Author
Wang, A.
Taylor, J.
Szathmary, G.
Date
December 2001
Edition
37598
Material Type
Research report
Field
Wood Manufacturing & Digitalization
-gauge bandsaws respectively improved sawing accuracy up to 22% and 44%, reduced sawblade lateral
Author
Wang, A.
Taylor, J.
Szathmary, G.
Date
December 2001
Edition
37598
Material Type
Research report
Physical Description
13 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Band saws
Saw bands
Saws
Bands
Blades
Sawing
Series Number
1996
W-1817
Location
Vancouver, British Columbia
Language
English
Abstract
The primary objective of the study is to measure the effect on cutting accuracy of side grinding swaged tooth bandsaws. The effect of side grinding on surface finish is included for comparison with previous work. Swaged tooth bandsaws tend to leave quite a rough sawn surface. Cutting with large bites or uneven teeth aggravates this problem. Previous studies have shown that side grinding could improve surface finish but it was not shown to have any effect on cutting accuracy. However, sawmills and saw manufacturers have indicated that side grinding can improve cutting accuracy. Therefore, this contradiction needs to be resolved in order to quantify any benefits from side grinding. The results indicate significant improvements in cutting accuracy and surface finish are possible. Side grinding 17-gauge and 16-gauge bandsaws respectively improved sawing accuracy up to 22% and 44%, reduced sawblade lateral displacement up to 36% and 68% and improved the sawn surface finish up to 24% and 11%. Extremely careful bandsaw fitting and tooth alignment was necessary in the preparation of side ground saws. This cost-time-effectiveness has to be considered when adding side grinding to swaged saw preparation.
Saws - Band
Saws - Maintenance
Sawing - Blades
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Relationship among resource characteristics, sawing strategy, and lumber quality and value in black spruce

https://library.fpinnovations.ca/en/permalink/fpipub42022
Author
Zhang, S.Y. (Tony)
Date
March 2001
Material Type
Research report
Field
Sustainable Construction
Author
Zhang, S.Y. (Tony)
Contributor
Canada. Canadian Forest Service
Date
March 2001
Material Type
Research report
Physical Description
34 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Pinus
Spruce
Sawing
Quality control
Qualitative analysis
Black spruce
Series Number
Canadian Forest Service No. 34
E-3526
Location
Sainte-Foy, Québec
Language
English
Abstract
Black spruce
Lumber quality
Resource characteristics
Sawing
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