最新刊期

    期 0 , 2020
    • Issue 5, (1995) DOI: 10.19455/j.mcgy.1995.05.012
      摘要:延长单层热压机钢带使用寿命的简易措施康伟明,葛福丛,王振明(黑龙江省完达山刨花板厂密山市158300)我国刨花板厂中选用单层热压机生产线的很多,普遍存在钢带易打折变形和使用寿命短等问题,直接影响刨花板的表面质量、产量和经济效益。分析钢带产生打折变形的...  
        
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    • Issue 5, (1995) DOI: 10.19455/j.mcgy.1995.05.007
      摘要:生产无胶干法硬质纤维板的特点曹忠荣(中国林科院木材工业研究所北京100091)中国林科院木材工业研究所研制的无胶干法硬质纤维板生产工艺技术问世后 ̄[1],受到了国内同行的广泛关注,尤其是目前处于进退维谷中的湿法生产纤维板厂。为便于对这一新工艺有比较全...  
        
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    • Issue 5, (1995) DOI: 10.19455/j.mcgy.1995.05.010
      摘要:胶合板内在质量检测中采用回归分析法的探讨童汉星(武平县胶合板厂福建武平364300)1前言胶合板的胶合强度是一项重要的质量指标。但是,检测胶合板胶合强度的费用高(属破坏性试验)、过程长,且表板减薄后,用传统的方法更难检测。因此,迫切需要一种快速、经济...  
        
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    • Issue 5, (1995) DOI: 10.19455/j.mcgy.1995.05.008
      摘要:葵花秆刨花板用改性脲醛树脂的研究王喜明(内蒙林学院呼和浩特010019)郭宝山(河套人造板工业总公司临河市015000)内蒙古西部地区是一个缺林的地区,随着我国重点建设的西移和西北煤矿基地的开发,木材及人造板的供需矛盾日益突出。为了尽快解决这一矛盾,...  
        
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    • Issue 5, (1995) DOI: 10.19455/j.mcgy.1995.05.001
      摘要:Veneer rotary cutting of 7 poplar wood species under different conditions weretested and the basic density,moisture content,hardness,MOE and MOR of the poplars testedwere determined. The MOE and MOR were measured on condition that grain direction wasperpendicular to the span.The hardness, MOE and MOR under different hot-water treatmentconditions were tested.Testing results showed that the veneer quality of poplar woods test-ed,except Hebei poplar,was satisfied under conditions of knife grinding angle 19°, clearanceangle 40′and the nose-bar opning 84%~92%without hot-water treatment.Physic-mechani-cal properties,especially MOE and MOR,of the poplar woods had considerable effects on ve-neer quality and determination of veneer rotary cutting conditions.Woods with 200 MPa ofMOE and ratio 2.2%of MOR to MOE were proved to be suitable for veneer rotary cutting.  
      关键词:Poplar;peeling;Quality of veneer;Wood properties   
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    • Issue 5, (1995) DOI: 10.19455/j.mcgy.1995.05.004
      摘要:本研究探讨了采用现代电子技术精确测定波速的方法;研究被测物的弹性模量与其密度和应力波波速之间的关系;研究应力波非破损测定中密度纤维板的弹性模量与国家现行标准规定的破损法测定的弹性模量之间的相关性。研究结果表明:应力波非破损测试法测定的中密度纤维极弯曲弹性模量具有足够精确的保证,从而为实现中密度纤维板生产线产品质量以力学性能为标准的在线检测系统的正常运行和生产线的自动控制成为可能。  
      关键词:弹性模量;非破损检测;破损性检测;应力波;相关性   
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    • Zheng Quanlian
      Issue 5, (1995) DOI: 10.19455/j.mcgy.1995.05.005
      摘要:A method of setting and storing of parameters for press controlled with pro-grammable logical controller is introduced. According to this design, 20 pressing curves couldbe stored in the memory of PLC. Each curve is divided into 20 sections, The 20th section,which is not allowed to change by users for safety of operation,is a fixed step for opening ofthe press. Parameters for all the other 19 sections storing in the memory can be set by usersand be retrieved for use.  
      关键词:Hot press;PLC;Computer control   
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    • Issue 5, (1995) DOI: 10.19455/j.mcgy.1995.05.006
      摘要:意大利木工机械进入中国的回顾(续四)刘苗,李黎,徐明追溯中国大陆进口意大利木工机械的历史,自1986年以来,砂光机的进口数量逐年减少,以致到目前为止,除人造板生产线配套的大型砂光机以外,只有少数的企业还在引进通用型的砂光机,用于家具和小规模的人造板覆...  
        
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    • Issue 5, (1995) DOI: 10.19455/j.mcgy.1995.05.009
      摘要:提高单板干燥机效率降低能耗的刍议─—进口单板辊筒干燥机剖析周平(上海木材工业研究所上海200051)1前言八十年代中期起,我国不少胶合板厂先后引进了德国、芬兰、意大利、日本等国生产的单板干燥机。这些机器以干燥速度快、热效率高、机械结构合理、控制技术先...  
        
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    • Issue 5, (1995) DOI: 10.19455/j.mcgy.1995.05.003
      摘要:This paper was mainly concerned with the theoretical analysis of quantitative pa-rameters and described how the run-out of a circtilar saw and its rigidity in a given overload-ed condition were applied in assessment of levelling and distribution of tensioning Strees. Thedetecting system developed with 8031 single chip computer as its core was also described.The experiments of applying the method with the detecting system to a variety of circu-lar saws used for wood cutting and to large-sized diamond saws showed that this methodwith the system could be used in industrial operation with great feasibility.  
      关键词:Circular saw;Tensioning stress;Levelling;Single-chip computer;Detectingsystem   
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    • Sun Guangrui
      Issue 5, (1995) DOI: 10.19455/j.mcgy.1995.05.002
      摘要:This article described the principle of humidification treatment of particleboardmat surface,which proved to be effective in shortening hot-pressing cycle.The major factorsof humidification treatment were hot-pressing temperature,humidifying content and thick-ness ratio of humidified layer.  
      关键词:particleboard;Humidification;Hot-pressing cycle   
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    • Issue 5, (1995) DOI: 10.19455/j.mcgy.1995.05.011
      摘要:刨切单板饰面硬质纤维板的生产试验肖四平(湖南省零陵地区木材总厂冷水滩市425100)硬质纤维板因产品质量档次低,其用途受到限制。多年来围绕提高产品档次,扩大使用范围,不少科技工作者作了大量工作。零陵地区木材总厂自1993年9月起,利用刨切单板装饰硬质...  
        
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