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IDéWA (Haplormosia monophylla)
Nome comercial
Idéwa
Nome científico (autor)
Haplormosia monophylla Harms
Família
LEGUMINOSAE
Nomes comuns
Liberian Black Gum (Liberia); Liberian black gum; Kak; Kah; Engenger; Black gum; Akoriko; Idewa (Gabon); Larme (Côte d`Ivoire); Haplormosia
Nome científico sinônimo (autor
Crudia monophylla Harms
DESCRIÇÃO DA ÁRVORE
Descrição botânica
The tree reaches a height of 20 to 30 m. The bole is often irregular and twisted, with low spreading buttresses. The trunk diameter attains 70 to 100 cm.
Habitat natural
Haplormosia monophylla is a lowland tree. It is found in rain forest swampy areas and along rivers. It is known or inferred that unless the species is subject to strict regulation, it will meet AT LEAST ONE of the Appendix I criteria in the near future. B
IDENTIFICAÇÃO DA MADEIRA
Descrição anatômica da madeira (macro e micro)
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 150 to 200 micras (medium). Vestured pits. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits similar to intervessel pit Axial parenchyma aliform. Occasionally axial parenchyma confluent. Axial parenchyma storied. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 3 to 4 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays storied. Rays commonly 2 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Non-septate fibers. Fibers with simple to minutely bordered pits.
DISPONIBILIDADE
Situação CITES sobre a proteção
Unrestricted
DESCRIÇÃO GERAL DA MADEIRA
Cor
The sapwood is yellowish white. The heartwood is yellowish brown to chocolate brown, it is clearly demarcated. The silver figure is fine.
Indice de cor
4
Grã
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Veios ou desenhos na superfície
Texture is reported to be fine to medium.
Brilho
The wood surface is described as low in luster.
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
Tensões internas do crescimento
Residual growth stresses are absent.
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)
0.71
Densidade seca ao ar 12% (g/cm³)
0.80
Contração Tangencial Total (Saturado até peso seco) (%)
6.8
Contração Radial Total (Saturado até peso seco) (%)
2.9
Defeitos causados pela secagem
Ease of Drying: Drying is rather slow and sometimes difficult to perform. Drying Defects: Risks of checks. Kiln Schedules: Schedule proposed as a reference by comparison with well known species taking into account to the general technological behavior of this species.
Programa de secagem recomendável
FR-4
Estabilidade dimensional (Contração Tangencial Total %/Contração Radial Total %)
2.3
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)
1354
Flexão Estática a 12% (Módulo de elasticidade) (kgf/cm²)
172361
Resistência a compressão paralela as fibras a 12% (kgf/cm²)
714
Resistência a compressão perpendicular as fibras a 12% (kgf/cm²)
100
Cisalhamento radial a 12% (kgf/cm²)
108
Dureza Janka a 12% (perpendicular) (kgf)
799
Dureza Janka a 12% (paralela) (kgf)
875
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
Moderately easy; tools must be cautiously sharpened.
Aplicação para molduras
Moderately easy; tools must be cautiously sharpened.
Torneamento
30
Furação
Moderately easy; tools must be cautiously sharpened.
Fresagem_ranhura_canais
Moderately easy; tools must be cautiously sharpened.
Comportamento na aplicação de pregos
Pre-boring is necessary.
Colagem
Glues well if basic gluing technical rules are followed.
Lixamento
Easy to perform; it gives good results.
Operação de lustre da superfície (brilho)
Can be polished without surface preparation.
Steam Bending
It is reported to have good bending properties.
Trabalhabilidade com ferramentas manuais
Working with hand tools is difficult.
USOS FINAIS RELATADOS
USOS FINAIS (RESUMO)
HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, steps, panelling, fittings, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, faces, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, lasts, BENDING, chairs, OTHER AND MUSICAL INSTRUMENTS, handicrafts
CASAS
- 10 - Silica in Timbers
Vigas
- 11 - Prospect: The wood database
Vigotas
- 12 - Tropical timbers of the world. Part I-Tropical American Species
Tábuas
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Pisos
- 14 - Handbook of Hardwoods
Parquets
- 15 - Empire Timbers
Marcos de portas
- 16 - Woods of the World
Degraus de escada
- 17 - Tree Conservation Database
Painéis
- 18 - W3TROPICOS Missouri Botanical Garden
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 de superfície das chapas
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
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
Resistência a flexão
- 35 - Embassy of Myanmar in Japan
Cadeiras
- 36 - Autoridad Nacional del Ambiente, Panama
Artesanato
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
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