柳安木(LAUAN)-Meranti Wood

(LAUAN)家具用材。亦稱"柳安木"。緬甸、印度、印度尼西亞、菲律賓等國所產木材的一種類型。其原植物有白柳安屬、紅柳安屬、柳安屬等數種。均為龍腦香科的常綠大喬木。

·       中文名稱

柳安

·       生產地

緬甸、印度、印度尼西亞、菲律賓

·       別名

柳安木

·       類別

木材群屬

簡介

柳安實際上並不是一種單純的 樹種,市場上以柳安統稱的木材實際上包括了一個屬群,它包括了娑羅雙屬(shorea spp),龍腦香科(bipeerocarpaceae)下的梅蘭蒂族木材(MERANTI)大致分為紅梅蘭蒂、淺紅梅蘭蒂和黃梅蘭蒂類。目前市場上稱為紅柳安、白柳安和黃柳安實際上是這些木材的市場俗稱。消費者在購買時往往按自己喜好的顏色購。


形態特徵

柳安木的顏色涵蓋了從淺色到深色系列,有較大的選擇餘地。它的材質軟 硬適中,加工容易,氣乾後不易變形,但一般自然氣乾需五個月左右,當 然烘乾材不在此列。柳安木的刨面光澤、徑面有帶狀花紋,具裝飾性。柳安木在過去被認為是一種比較高檔的木材,隨著人民生活水平的提高,它 在目前已被廣大的工薪階層所接受,已成為一般的裝潢材。但是裝潢過程中如果裝配不當,可能導致以後柳安使用壽命的減短,甚至會出現開裂的現象。

地理分布

柳安主要產地是馬來西亞、印尼和菲律賓一帶,目前是我國從東南亞進口 木材的主要品種。大致分有三類:

一類是進口板材,多數是5cm6 cm 的厚板、小方;

一類是進口的柳安原木,往往用於生產膠合板原料;

還有的就是進口的膠合板及單片。 值得注意的是,我國目前進口的柳安成材中,品種的"純度"往往不足, 也就是說在進口時,不少混雜了東南亞雜木,比較好的柳安比重達80%左右,而差的柳安比重僅50%甚至還低市場上柳安的價格與雜木的價格每 立方米差價在1000元左右。所以在市場上選購時,不僅要看價格,更重 要的是看柳安的"純度"。有的消費者選購時,往往認為顏色越紅,份量 越重的才是柳安,實際上那往往是硬雜木,而不是柳安。由於品種混雜, 物理性能各異,加工後的地板等就會成材再現縫隙和隆起。由於進口時"柳 安純度不足",市場上糾紛時起,經營者在銷售時往往以"南洋成材"標 售,這也是沒有辦法的辦法。但消費者在購買時務必注意質量第一,真正的柳安就是價格高些,也是物有所值的。

Meranti plywood-KAYU


柳安

白柳安木材結構粗,紋理斜,易於乾燥和加工,且著釘、油漆、膠合等性能均好;紅柳安木材結構、紋理亦如白柳安,徑切面花紋美麗,但乾燥和加工較難。柳安一般為門窗、家具、車輛等的良材。在我國市場出現約有百年以上的歷史。

What Is Meranti Wood?

Meranti plywood-KAYU

Meranti is a versatile wood with many subspecies, sources and purposes. Philippine or Lauan mahogany is another, somewhat generic term for meranti that is harvested and is available in abundance on a worldwide basis. The majority of meranti for domestic use is imported to the United States from Southeast Asia.


Description

Meranti may be bland in appearance; it has straight grain with few variations. Colored gray or yellow, blending to reddish depending on where it's harvested, meranti ages to a golden brown with continued exposure to light. Meranti is a hardwood. On the Janka scale -- a scale that ranks wood for hardness -- meranti varieties rank between 800 and 825. For the sake of comparison, red oak ranks 1,290. Douglas fir, a softwood, ranks 660.

Workability

Meranti is one of the easier hardwoods with which to work. It easily machines, cuts, mills and sands. Because of a certain amount of silica in the wood, meranti has a dulling effect on woodworking equipment. Steel blades, bits and knives cut meranti with ease, but carbide-tipped blades and tools are recommended for projects on a production level. Meranti has a coarse, fibrous texture with open pores. The straight-grain composition of meranti means it's friendly to planers and surfacers, but a certain amount of interlocking grain can cause meranti to blow out or splinter. Interlocking grain patterns result when parallel grain patterns turn at 90 degrees. When knives or cutters cut across perpendicular grain, it can cause the grain to lift or chip out.

Finishing

Meranti has little or no resistance to insects or decay. The wood is dimensionally stable and resistant to warping or twisting. Sanding with 100-grit sandpaper is typically all that's required before finishing. Subsequent sanding with progressively finer grits yields smoother finishes. Sanding or woodworking dust can cause irritation; eye and breathing protection is recommended when working with meranti. After milling and sanding, meranti readily accepts stain and subsequent top coats.

Uses

With straight-grain consistency, meranti trees produce long, straight pieces of lumber. It's used for molding, structure, furniture, cabinets, window and door trim, and veneers for plywood. Meranti is one of the more affordable hardwoods due in part to numerous subspecies, prolific growing characteristics and availability.

Meranti plywood-KAYU1

2020-09-28