< Volver MUKARATI (Burkea africana) Vista Imprimible
MUKARATI (Burkea africana)
Nombre comercial
Mukarati
Nombre científico (con autor)
Burkea africana Hook.
Familia
LEGUMINOSAE
Nombres Comunes
Combo kourou (Guinea); Mukarati (Uganda); Burkea (Uganda); Mkarati (Tanzania); Burkea (Tanzania); Burkea (Kenya); Burkea (Ethiopia); Mucarala (Mozambique)
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
The tree reaches 15 to 20 m in height, with a bole length of 5 to 6 m. The trunk diameter is between 30 to 60 cm.
Hábitat natural
Burkea africana is widely distributed in dry savanna forests.
Distribución natural
From Nigeria southward to south Africa.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 to 150 micras (small). Brown-colored deposits in heartwood vessels. Vestured pits. Vessels per mm2 6 to 10 (medium). Simple perforation plates. Ve Axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma lozenge-aliform. Axial parenchyma confluent. Non-crystals in axial parenchyma cells. 3 to 4 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays non-storied. Rays 1 to 4 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Non-septate fibers. Fibers with simple to minutely bordered pits.
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Color
The sapwood is white with yellow or pink tones, it has a thickness of 2.5 cm. The heartwood is brown with green or grey tinges, turning dark brown or red brown on exposure, it is not clearly demarcated.
Grano
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Veta
The wood is mostly fine in texture.
Brillo
The wood surface is low in luster.
Durabilidad Natural
Durable to decay; this species can be utilized without preservative treatment for exterior joinery or similar uses. Resistant to termites attack. Heartwood is resistant to Lyctus attacks.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
1
Dificultad para impregnar
Nearly impossible to treat with a too much low penetration of the preservative substances.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.75
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.85
Defectos por secado
Ease of Drying: It was noted that the wood has no difficulties in drying. The rate of shrinkage from green to oven dry is 2.9% radial and 6.4% tangential. Drying Defects: It can stand very rapid drying without suffering any appreciable damage. But end-splitting may occurs when green wood is kiln dried too fast. The wood color is said to improve by the kiln-seasoned. And once it's dry, the wood is exceptional stable in serv Kiln Schedules: Pre-drying is recommended. The temperature during kiln drying should be 43-71oC and the corresponding relative humidity should decrease from 84% to 38%.
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
1365
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
166097
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
723
Cizallamiento radial CH12% (kgf/cm²)
170
TRABAJABILIDAD
Aserrado
Sawing of this species requires powerful equipment.
Corte de chapa rotativa
Not suitable for veneering.
Chapa tranchada
Not suitable for veneering.
Pérdida de filo_romado
Moderate blunting effect; stellited blades for sawing and carbide tools for machining are advised.
Maquinado general
It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported.
Cepillado
Rather difficult; special tools are needed.
Moldurado
Moderately easy; tools must be cautiously sharpened.
Torneado
30
Taladrado
Moderately easy; tools must be cautiously sharpened.
Escopleado, caja y espiga
Moderately easy; tools must be cautiously sharpened.
Clavado
Pre-boring is necessary.
Encolado
Difficult to glue because of high density.
Lijado
Particular care is needed to avoid woolly aspect of the surface.
Sacar lustre
Can be polished without surface preparation.
Facilidad para herramientas manuales
Working with hand tools is difficult.
Usos Reportados
USOS FINALES (RESUMEN)
EXTERIOR GENERAL, poles, stakes posts, crossties, HOUSING GENERAL, parquet, fittings, FURNITURE AND CABINETS, cabinets, TURNING, SPORTS, TOOLS, tool handles, agricultural tools, NAVAL CONSTRUCTION, boats, OTHER AND MUSICAL INSTRUMENTS, handicrafts
EXTERIOR GENERAL
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Postes de transmisión
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Postes cerca
- 5 - Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii
Durmientes
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
VIVIENDA GENERAL
- 10 - Silica in Timbers
Parquet
- 15 - Empire Timbers
Accesorios de madera
- 19 - Silica in Timbers
MUEBLES Y GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Gabinetes
- 24 - Empire Timbers
Torneado
- 30 - Embassy of Honduras in Japan
IMPLEMENTOS DEPORTIVOS
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
HERRAMIENTAS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Mangos herramientas
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Mangos agrícolas
- 44 - Atlas of Peruvian Woods
CONSTRUCCIÓN NAVAL
- 55 - Tropical Timber Atlas of Latin America
Botes
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
artesanía
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Please Provide Information To View Producer Information