EBONY (Diospyros crassiflora)
Nome comercial
Ebony
Nome científico (autor)
Diospyros crassiflora Hiern
Família
EBENACEAE
Nomes comuns
Ebene (Benin); Ebène (France); Ebène (Belgium)
Nome científico sinônimo (autor
Diospyros evila Pierre ex A. Chev.; Diospyros ampullacea Gurke
DESCRIÇÃO DA ÁRVORE
Descrição botânica
The tree may reach a height of 15 m. The bole is short, up to 10 m, straight and fluted. The trunk diameter may attain 100 cm.
Habitat natural
Diospyros crassiflora grows in semi-deciduous forests. It is a gregarious species found in almost pure stands near riverbanks.
Distribuição natural
From Nigeria to the Democratic Republic of the Congo.
IDENTIFICAÇÃO DA MADEIRA
Descrição anatômica da madeira (macro e micro)
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 to 150 micras (small). Non-vestured pits. Vessels per mm2 6 to 10 (medium). Simple perforation plates. Vessel-ray pits similar to intervessel pit Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Occasionally axial parenchyma in discontinuous tangential lines. Prismatic crystals in short chains in chambered axial parenchyma cells. 3 to 4 cells per parenchyma strand. Rays more than 10 per mm (abundant). Rays non-storied. Rays exclusively uniseriate. Occasionally prismatic crystals in the ray cells. Heterogeneous rays and/or multiseriate heterogeneous rays.
-
Foto de madeira macroscópica (tangencial)
-
Foto da secção transversal microscopica
DISPONIBILIDADE
Situação CITES sobre a proteção
CITES III
DESCRIÇÃO GERAL DA MADEIRA
Cor
The sapwood is pale brown to reddish, eventually with black spots, it has a thickness of up to 15 cm. The heartwood is uniform jet-black or black brown or dark brown with black streaks, it is clearly demarcated.
Indice de cor
1
Grã
Straight; grain has no particular influence on drying, machining and finishing qualities.
Veios ou desenhos na superfície
The wood is typically fine in texture.
DURABILIDADE NATURAL
Very durable to decay; without preservative treatment. This species is especially suited for all the uses with risks of permanent or long-lasting humidification. Resistant to termites attack. Heartwood is resistant to Lyctus attacks.
Indice de durabilidade natural
1
Tratamento preservativo
Nearly impossible to treat with a too much low penetration of the preservative substances.
PROPRIEDADES FÍSICAS DA MADEIRA
Densidade básica (Peso seco/Volume saturado) (g/cm³)
0.90
Densidade seca ao ar 12% (g/cm³)
1.05
Contração Tangencial Total (Saturado até peso seco) (%)
12.5
Contração Radial Total (Saturado até peso seco) (%)
10.0
Defeitos causados pela secagem
Ease of Drying: Initial moisture contents may be very high. 25mmboard can be kiln dries from the greeen with a mild schedule. but 50mm stock should undergo preliminary air drying. Drying Defects: Collapse, insiginificiant, in fully air dried material, may occur in kiln drying but is largely over come by reconditioning. Presteaming should not be undertaker as it accentuates collapse and has no significiant effect on drying rates. Kiln Schedules: 25mm backsawn board kiln dry in 5days, quarter sawn stack takes 8-9 days from green. to 12% moisture content. If collapse present, at 4-6 hours reconditioning treatment is advised after kiln-drying.
Programa de secagem recomendável
FR-13
Estabilidade dimensional (Contração Tangencial Total %/Contração Radial Total %)
1.3
Programa de secagem detalhado
http://www.tropicaltimber.info/wp-content/uploads/2015/09/KD_French.pdf
PROPRIEDADES QUÍMICAS DA MADEIRA
PROPRIEDADES MECÂNICAS DA MADEIRA
Resistência a flexão a 12% (Módulo de ruptura) (kgf/cm²)
1467
Flexão Estática a 12% (Módulo de elasticidade) (kgf/cm²)
126356
Resistência a compressão paralela as fibras a 12% (kgf/cm²)
540
TRABALHABILIDADE
Serrar ou Cortar
Sawing of this species requires powerful equipment.
Desdobro da tora em torno para lâminas
Suitable for slicing.
Desdobro da tora em faqueadeira para lâminas
Suitable for slicing.
Desgaste de ferramentas
Moderate blunting effect; stellited blades for sawing and carbide tools for machining are advised.
Aspectos do processamento em máquinas
It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported.
Aplainamento
Rather difficult; special tools are needed.
Aplicação para molduras
Easy; no particular problems.
Torneamento
30
Furação
Easy; no particular problems.
Fresagem_ranhura_canais
Easy; no particular problems.
Comportamento na aplicação de pregos
Pre-boring is necessary.
Colagem
Difficult to glue because of high density.
Lixamento
Easy to perform; it gives good results.
Operação de lustre da superfície (brilho)
Can be polished without surface preparation.
Steam Bending
Steam bending is difficult.
Trabalhabilidade com ferramentas manuais
Working with hand tools is difficult.
USOS FINAIS RELATADOS
USOS FINAIS (RESUMO)
HOUSING GENERAL, fittings, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, lasts, OTHER AND MUSICAL INSTRUMENTS, handicrafts
CASAS
- 10 - Silica in Timbers
Acessórios de madeira
- 19 - Silica in Timbers
MÓVEIS GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Móveis finos
- 22 - Dry kiln schedules for commercial woods. Temperate and tropical. Section IV-Asian and Oceanian Woods
Gabinetes
- 24 - Empire Timbers
CHAPAS
- 25 - Directory of Timber Trade Malaysia
Lâminas decorativas
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Torneamento
- 30 - Embassy of Honduras in Japan
Artigos torneados
- 31 - Embassy of Colombia in Japan
Artigos torneados
- 32 - Embassy of Cote d`Ivoire in Japan
Cabo de faca
- 33 - Embassy of Gabon in Japan
Formas de sapateiro
- 34 - Embassy of Indonesia in Japan
ARTIGOS MUSICAIS E OUTROS
- 63 - Madeiras do Brazil II
Artesanato
- 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