Basic Lumber Manufacturing and QC Workshop
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Basic Lumber Manufacturing and QC Workshop October 16th, 2012 Red Lion Hotel, Portland, OR |
This workshop will expose new personnel in the industry to the basics of softwood lumber manufacturing as well as present experienced personnel information on new technologies adding value to the industry. The workshop will consist of an overview of softwood lumber manufacturing, softwood lumber markets, log yard operations, trimming and sorting, headrigs, kiln drying planer operations and grading. Attendees will receive free admission to the Timber Processing & Energy Expo, which will be held October 17-19 at the Portland Exposition Center.
8:00 am - Introductions, workshop overview [Scott Leavengood, Oregon State University]
8:30 am - Softwood lumber manufacturing – “the 30,000 foot view” (step-by-step - logging, transporting, scaling, log yard, debark, buck, headrig, edge, trim, sort, dry, plane, grade); examples of different mill layouts – ‘virtual mill tours’, raw material flows [Terry Brown, Lumber Quality Institute]
9:30 am – Overview of softwood lumber markets (dimension, boards, timbers, MSR lam stock, etc.) [Frank Stewart, Western Wood Products Association]
10:15 am - Break
10:30 am – Bringing Scanning Technology to Log Procurement and Yard Operations [Mario Angel, Woodtech Measurement Solutions]
11:00 am – Modern Transverse Bucking Systems [Josh Krauss, Baxley Equipment/Price LogPro, LLC]
11:30 am – Expanding the Market for Wood Products through Education [Ethan Martin, WoodWorks]
12:00 pm - Lunch
1:30 pm – Primary breakdown continued - Scanning and optimization systems [Laurent Poudrier, COMACT]
2:30 pm – Improved Multi-Zone Kiln Control [John Robinson, Drying Technology, Inc.]
3:00 pm - Break
3:30 pm – 'Stressed Out' (Machine Stress Rated Lumber Grading) [Dan Uskoski, Metriguard Inc.]
4:00 pm – Overview of lumber QC (e.g., size control) [Terry Brown, Lumber Quality Institute]
5:00 pm - Adjourn
Cost: $225
For more information, contact Fred Kurpiel at 678-642-1238; e-mail fredkurpiel@aol.com
Presentation Abstracts:
Bringing Scanning Technology to Log Procurement and Yard Operations, Mario Angel, Woodtech Measurement Solutions - Mr. Angel will present the latest developments in scanning technology for measuring the volume of log loads and other biometric characteristics of individual logs such as diameters, taper and length and the detection of defects such as sweep and crook. The presentation will include examples of how this technology is utilized in Latin America, the U.S. South and the Pacific North West and its benefits for sawmill operations.
For Mario's biography, please see the speaker bios page.
Modern Transverse Log Merchandising, Josh Krauss, Price LogPro, LLC - This presentation will be targeted to green end supervisors and will provide an overview of modern transverse bucking systems. Josh will provide an overview comparison of conventional lineal bucking systems vs. transverse systems, present the advantages over lineal bucking (e.g., speed production gains of 300%, trim accuracy, and optimized defect trimming), and discuss the ease of retrofitting into existing linear bucking systems as well as yield improvements from accurate trim lengths. Videos will be shown of recent systems.
For Josh's biography, please see the speaker bios page.
Developments in Primary & Secondary Breakdown, Laurent Poudrier, Comact - Mr. Poudrier will present the latest developments in primary and secondary breakdown equipment from Comact based on new optimization philosophies including scanning for visual defects. He will demonstrate the different operation theories of optimization which drive new concepts of sawlines. Shorter machines, high throughput systems and very high efficient producing centers showing highest lumber recovery. The presentation will include discussion of typical layouts, optimizer screen shots, and videos of systems in action.
For Laurent's biography, please see the speaker bios page.
Improved Multi-Zone Kiln Control, John Robinson, Drying Technology Inc. - Concurrent development of multi-zoned lumber kilns and the use of total drop across the load (TDAL) occurred in the early 1980’s. Both were significant improvements in lumber drying. However, the heterogeneity of wood continues to challenge traditional lumber sensing and control methods in the primary goal of reducing over and under-dried lumber. Fortunately, a theoretically based control method has been developed, and proven capable of effecting further reductions in degrade and drying time throughout the entire drying time. This method is based on a first-principles-derived mathematical model,
MC = K3(∆T)s – K4(θ)r,
that relates the moisture MC of lumber being dried to the temperature drop (∆T) of hot air after contacting the wet lumber and the elapsed drying time (θ). The model provides the theoretical basis for TDAL; however, due to the varying air flow rate and air temperature of the heating air to each zone, TDAL or ∆T is not sufficiently accurate for use in comparing zone drying. The Delta T model enables continuous calculation and display of individual zone drying rates, which are free from such errors; therefore, they can be used for accurate comparison of individual zone drying. Additionally, the fiber saturation point (FSP) of each zone can be detected, at which point drying rate control appropriately applies steam to each zone based on need. Thereafter, each zone is controlled such that its mean MC converges toward the target overall mean MC. The result of improved comparison of zone drying is a further reduction in degrade and drying time.
For John's biography, please see the speaker bios page.
'Stressed Out', Dan Uskoski, Metriguard Inc - Uncertainty about visually graded lumber design values has raised the stress level of many lumber consumers. Come find out how machine stress graded lumber can relieve that stress. It is a product that had, has and always will have predictable properties.
For Dan's biography, please see the speaker bios page.
Other presentation abstracts will be inserted here as they are received