2025-09-03 04:26:34
根據木材(cai)(cai)(cai)特性、厚(hou)度(du)、用途的(de)(de)不同,烘(hong)干基準可分(fen)為(wei)多種類型,常見分(fen)類方式(shi)如下:木材(cai)(cai)(cai)厚(hou)度(du)是影響基準的(de)(de)關鍵因素(厚(hou)度(du)越大,水分(fen)從內部遷移(yi)到表面的(de)(de)距離(li)越長(chang),需更(geng)溫(wen)(wen)和的(de)(de)條件):薄材(cai)(cai)(cai)(厚(hou)度(du)<20mm):可采用較(jiao)高(gao)(gao)的(de)(de)初(chu)(chu)始溫(wen)(wen)度(du)(50-60℃)和中等濕度(du)(60%-70%),烘(hong)干周期較(jiao)短(如10-20小時(shi))。中厚(hou)材(cai)(cai)(cai)(20-50mm):初(chu)(chu)始溫(wen)(wen)度(du)需降低(40-50℃),濕度(du)提高(gao)(gao)(70%-85%),烘(hong)干周期延(yan)長(chang)(20-40小時(shi))。厚(hou)材(cai)(cai)(cai)(>50mm):初(chu)(chu)始溫(wen)(wen)度(du)更(geng)低(30-40℃),濕度(du)更(geng)高(gao)(gao)(80%-90%),且需分(fen)階段緩(huan)慢升(sheng)溫(wen)(wen),周期可達40-72小時(shi)以上。自然干燥(zao)和人工干燥(zao)有什(shen)么區別(bie)?濕木材(cai)(cai)(cai)木材(cai)(cai)(cai)干燥(zao)炭化窯
通(tong)風系統:由風機(ji)、風道等組成。風機(ji)使(shi)窯內(nei)空(kong)(kong)氣(qi)循環流動(dong),確保熱量均勻分布,同時將木(mu)(mu)(mu)材(cai)蒸發出來的(de)水分排出窯外。風道用于(yu)引(yin)導(dao)空(kong)(kong)氣(qi)流動(dong),使(shi)空(kong)(kong)氣(qi)能夠有效地流經木(mu)(mu)(mu)材(cai)堆。濕(shi)(shi)(shi)(shi)度(du)(du)控制系統:包(bao)括濕(shi)(shi)(shi)(shi)度(du)(du)傳感器和加(jia)濕(shi)(shi)(shi)(shi)、除濕(shi)(shi)(shi)(shi)設備。濕(shi)(shi)(shi)(shi)度(du)(du)傳感器實時監測(ce)窯內(nei)濕(shi)(shi)(shi)(shi)度(du)(du),根(gen)據(ju)設定(ding)的(de)濕(shi)(shi)(shi)(shi)度(du)(du)值,通(tong)過加(jia)濕(shi)(shi)(shi)(shi)或除濕(shi)(shi)(shi)(shi)設備來調節(jie)濕(shi)(shi)(shi)(shi)度(du)(du),以滿足不同木(mu)(mu)(mu)材(cai)干燥階段對濕(shi)(shi)(shi)(shi)度(du)(du)的(de)要求(qiu)。控制系統:是烘(hong)干窯的(de) “大(da)腦”,用于(yu)控制加(jia)熱系統、通(tong)風系統和濕(shi)(shi)(shi)(shi)度(du)(du)控制系統的(de)運行(xing)(xing)。操作人員(yuan)可以通(tong)過控制系統設定(ding)烘(hong)干工(gong)藝參(can)(can)數,如溫度(du)(du)、濕(shi)(shi)(shi)(shi)度(du)(du)、烘(hong)干時間等,系統會自動(dong)按照(zhao)設定(ding)的(de)參(can)(can)數進行(xing)(xing)運行(xing)(xing),并實時顯(xian)示窯內(nei)的(de)實際(ji)參(can)(can)數。上(shang)海紅木(mu)(mu)(mu)木(mu)(mu)(mu)材(cai)烘(hong)干哪家好木(mu)(mu)(mu)材(cai)干燥后為何需要進行(xing)(xing)平衡處理?
燃(ran)(ran)氣(qi)(qi)烘(hong)干窯(yao)加(jia)熱(re)(re)速度(du)快:燃(ran)(ran)氣(qi)(qi)燃(ran)(ran)燒產生的(de)熱(re)(re)量(liang)直接用于加(jia)熱(re)(re)烘(hong)干窯(yao),能(neng)快速提升窯(yao)內溫度(du),提高烘(hong)干效率。熱(re)(re)效率高:燃(ran)(ran)氣(qi)(qi)燃(ran)(ran)燒充分,熱(re)(re)量(liang)損失(shi)小,熱(re)(re)效率一(yi)般在(zai) 85% 以上,相(xiang)比傳(chuan)統(tong)蒸汽(qi)烘(hong)干窯(yao)能(neng)節(jie)(jie)省(sheng)能(neng)源(yuan)。溫度(du)控(kong)制(zhi)精細:配備先(xian)進的(de)溫度(du)控(kong)制(zhi)系(xi)統(tong),可根(gen)據木材(cai)烘(hong)干工藝要(yao)求精確調節(jie)(jie)溫度(du),確保烘(hong)干質量(liang)。環保性(xing)能(neng)較(jiao)好:與(yu)燃(ran)(ran)煤等傳(chuan)統(tong)能(neng)源(yuan)相(xiang)比,燃(ran)(ran)氣(qi)(qi)燃(ran)(ran)燒產生的(de)污染物(wu)較(jiao)少(shao),對環境友(you)好。運(yun)行成本適中:燃(ran)(ran)氣(qi)(qi)價格(ge)相(xiang)對穩定,運(yun)行成本介于電加(jia)熱(re)(re)和傳(chuan)統(tong)蒸汽(qi)烘(hong)干窯(yao)之間(jian)。
木(mu)材(cai)(cai)(cai)(cai)干(gan)(gan)燥在(zai)(zai)家(jia)(jia)具(ju)(ju)制(zhi)造領(ling)域發(fa)揮著不(bu)(bu)可替代的(de)(de)作用,高(gao)(gao)質量的(de)(de)木(mu)材(cai)(cai)(cai)(cai)干(gan)(gan)燥是打造耐用、美觀(guan)家(jia)(jia)具(ju)(ju)的(de)(de)基礎(chu)。家(jia)(jia)具(ju)(ju)在(zai)(zai)使用過(guo)(guo)(guo)程中會(hui)面(mian)臨不(bu)(bu)同的(de)(de)環境條件(jian),如溫度(du)、濕度(du)的(de)(de)變(bian)化,若木(mu)材(cai)(cai)(cai)(cai)含水(shui)(shui)率(lv)不(bu)(bu)符合(he)使用環境要求,家(jia)(jia)具(ju)(ju)就容(rong)易出現變(bian)形、開(kai)裂等問題(ti),影響使用體驗和(he)使用壽命。例(li)如,在(zai)(zai)南方潮濕地(di)區,若家(jia)(jia)具(ju)(ju)木(mu)材(cai)(cai)(cai)(cai)的(de)(de)含水(shui)(shui)率(lv)過(guo)(guo)(guo)高(gao)(gao),在(zai)(zai)潮濕環境中木(mu)材(cai)(cai)(cai)(cai)容(rong)易吸收空氣中的(de)(de)水(shui)(shui)分(fen)(fen),導致家(jia)(jia)具(ju)(ju)膨(peng)脹、變(bian)形,柜門、抽屜難以(yi)開(kai)合(he);而(er)在(zai)(zai)北(bei)(bei)方干(gan)(gan)燥地(di)區,若木(mu)材(cai)(cai)(cai)(cai)含水(shui)(shui)率(lv)過(guo)(guo)(guo)低,家(jia)(jia)具(ju)(ju)在(zai)(zai)干(gan)(gan)燥環境中會(hui)進一步失去水(shui)(shui)分(fen)(fen),導致木(mu)材(cai)(cai)(cai)(cai)收縮、開(kai)裂,影響家(jia)(jia)具(ju)(ju)的(de)(de)外(wai)觀(guan)和(he)結(jie)構穩定性(xing)。因此,家(jia)(jia)具(ju)(ju)制(zhi)造企業在(zai)(zai)選(xuan)材(cai)(cai)(cai)(cai)后,會(hui)對(dui)木(mu)材(cai)(cai)(cai)(cai)進行嚴格的(de)(de)干(gan)(gan)燥處理(li),使其含水(shui)(shui)率(lv)達到與目標銷售地(di)區環境相適應的(de)(de)平衡含水(shui)(shui)率(lv)。一般來(lai)說,南方地(di)區的(de)(de)平衡含水(shui)(shui)率(lv)較(jiao)高(gao)(gao),約為(wei) 14%-18%,北(bei)(bei)方地(di)區較(jiao)低,約為(wei) 8%-12%。通過(guo)(guo)(guo)精(jing)細控制(zhi)木(mu)材(cai)(cai)(cai)(cai)含水(shui)(shui)率(lv),可確保(bao)(bao)家(jia)(jia)具(ju)(ju)在(zai)(zai)不(bu)(bu)同環境下(xia)都能保(bao)(bao)持(chi)良好(hao)的(de)(de)性(xing)能,延(yan)長家(jia)(jia)具(ju)(ju)的(de)(de)使用壽命,提升消費(fei)者的(de)(de)滿意度(du)。木(mu)材(cai)(cai)(cai)(cai)干(gan)(gan)燥過(guo)(guo)(guo)程中如何確保(bao)(bao)干(gan)(gan)燥均勻(yun)性(xing)?
根據木(mu)材(cai)(cai)(cai)特性、厚度(du)(du)(du)(du)、用(yong)途的(de)不同,烘干(gan)(gan)基準(zhun)可分為(wei)(wei)多(duo)種類型(xing),常見分類方式如下:1.按木(mu)材(cai)(cai)(cai)樹種特性分類針葉(xie)材(cai)(cai)(cai)基準(zhun):針葉(xie)材(cai)(cai)(cai)(如松(song)(song)木(mu)、杉(shan)木(mu))密度(du)(du)(du)(du)較(jiao)小(xiao)、結構較(jiao)疏松(song)(song),水分傳導快,可采(cai)用(yong)相對較(jiao)高的(de)溫(wen)(wen)(wen)度(du)(du)(du)(du)和較(jiao)低的(de)濕(shi)(shi)度(du)(du)(du)(du)。示例:初始(shi)含(han)水率30%-40%的(de)松(song)(song)木(mu)(厚度(du)(du)(du)(du)20mm),基準(zhun)可能(neng)為(wei)(wei):預熱階段(duan):溫(wen)(wen)(wen)度(du)(du)(du)(du)40-50℃,相對濕(shi)(shi)度(du)(du)(du)(du)85%-90%,維持2-4小(xiao)時(shi)(shi)(shi);干(gan)(gan)燥階段(duan):逐步(bu)升溫(wen)(wen)(wen)至(zhi)60-70℃,濕(shi)(shi)度(du)(du)(du)(du)降至(zhi)60%-70%,持續10-15小(xiao)時(shi)(shi)(shi);終期(qi)處(chu)理:溫(wen)(wen)(wen)度(du)(du)(du)(du)50-55℃,濕(shi)(shi)度(du)(du)(du)(du)50%-60%,至(zhi)含(han)水率達(da)10%-12%。闊(kuo)(kuo)葉(xie)材(cai)(cai)(cai)基準(zhun):闊(kuo)(kuo)葉(xie)材(cai)(cai)(cai)(如橡木(mu)、胡桃木(mu)、水曲柳)密度(du)(du)(du)(du)較(jiao)大、結構致密(尤其(qi)是硬闊(kuo)(kuo)葉(xie)材(cai)(cai)(cai)),水分傳導慢(man),需(xu)采(cai)用(yong)較(jiao)低的(de)初始(shi)溫(wen)(wen)(wen)度(du)(du)(du)(du)和較(jiao)高的(de)濕(shi)(shi)度(du)(du)(du)(du),避免開裂。示例:初始(shi)含(han)水率40%-50%的(de)橡木(mu)(厚度(du)(du)(du)(du)30mm),基準(zhun)可能(neng)為(wei)(wei):預熱階段(duan):溫(wen)(wen)(wen)度(du)(du)(du)(du)30-40℃,相對濕(shi)(shi)度(du)(du)(du)(du)90%-95%,維持4-6小(xiao)時(shi)(shi)(shi);干(gan)(gan)燥階段(duan):緩慢(man)升溫(wen)(wen)(wen)至(zhi)50-60℃,濕(shi)(shi)度(du)(du)(du)(du)保持70%-80%,持續20-30小(xiao)時(shi)(shi)(shi);終期(qi)處(chu)理:溫(wen)(wen)(wen)度(du)(du)(du)(du)55-60℃,濕(shi)(shi)度(du)(du)(du)(du)降至(zhi)50%-60%,至(zhi)含(han)水率達(da)12%-14%。木(mu)材(cai)(cai)(cai)干(gan)(gan)燥過程(cheng)中如何確保木(mu)材(cai)(cai)(cai)的(de)衛生性?上海紅木(mu)木(mu)材(cai)(cai)(cai)烘干(gan)(gan)哪家好
木材(cai)(cai)干燥(zao)后為何需要進行(xing)質量檢驗?濕木材(cai)(cai)木材(cai)(cai)干燥(zao)炭化窯(yao)
窯(yao)規(gui)范:按照規(gui)定(ding)的(de)方(fang)式和(he)要求(qiu)將木(mu)(mu)材(cai)裝入烘(hong)(hong)干(gan)(gan)(gan)窯(yao),確保木(mu)(mu)材(cai)堆放整齊(qi)、穩(wen)固,避免堵塞風道和(he)影響通(tong)風效果(guo)。同時,要留出足夠的(de)空間讓熱空氣流通(tong),保證木(mu)(mu)材(cai)干(gan)(gan)(gan)燥均勻(yun)。設(she)置參數(shu)(shu):根據木(mu)(mu)材(cai)的(de)烘(hong)(hong)干(gan)(gan)(gan)工藝要求(qiu),在(zai)(zai)控制系統中(zhong)準確設(she)置溫度(du)(du)、濕度(du)(du)、通(tong)風等參數(shu)(shu)。啟動烘(hong)(hong)干(gan)(gan)(gan)窯(yao)后,密切觀(guan)察設(she)備的(de)運行(xing)(xing)(xing)狀態(tai),確保各項(xiang)參數(shu)(shu)符合(he)設(she)定(ding)值。監控運行(xing)(xing)(xing):在(zai)(zai)烘(hong)(hong)干(gan)(gan)(gan)過(guo)程中(zhong),定(ding)期巡查烘(hong)(hong)干(gan)(gan)(gan)窯(yao)的(de)運行(xing)(xing)(xing)情(qing)況,包括溫度(du)(du)、濕度(du)(du)的(de)變(bian)化,風機(ji)、加熱設(she)備的(de)運行(xing)(xing)(xing)聲音等。查看控制系統的(de)顯示數(shu)(shu)據是否(fou)正常(chang)(chang),如(ru)有異(yi)常(chang)(chang),及(ji)時采取相應的(de)措(cuo)施進行(xing)(xing)(xing)調(diao)整或(huo)修復(fu)。濕木(mu)(mu)材(cai)木(mu)(mu)材(cai)干(gan)(gan)(gan)燥炭化窯(yao)