林业工程学报2025，Vol.10Issue(5)：47-54,8.DOI:10.13360/j.issn.2096-1359.202409021
碳化硅定组态砂带精磨中密度纤维板的寿命分析
Lifespan study of SiC precision-shaped abrasive belt for medium density fiberboard accurate sanding
摘要
Abstract
This study aims to analyze the lifespan of precision-shaped abrasive belts(PSAs)that used for medium-density fiberboard(MDF)accurate sanding,which is crucial for further exploring PSA performance,promoting the development and manufacture of abrasive belt for wood materials,and improving the evaluation system of its lifespan,so as to provide guidance for actual production and processing.In this study,a silicon carbide PSA was designed and prepared,and a sanding testing machine was developed to perform precise sanding tests on MDF.Material removal amount was obtained with precision analytical balance,surface roughness(Sa),surface topography,and equivalent abrasive height data were obtained by the 3D surface profile instrument.Data analysis provided insights into changing trends of material removal amount,sanding surface quality,and wear condition of PSA to explore the lifespan and evaluation methods.Additionally,the Grey Model GM(1,1)was employed to predict the lifespan of PSA based on data trends.When material removal quantity was used to evaluate the lifespan of PSA,the GM(1,1)model was established to predict the lifespan based on the relationship between material removal amount and sanding times.The theoretical sanding length was 37 875 m,surpassing 1.63 and 1.26 times of ordinary abrasive belt and brown corundum PSA.When the sanding Sa was used to assess the lifespan of PSA,the analysis of the trend of MDF S s ahowed that PSA reached its lifespan after 355 000 sanding times,corresponding to a theoretical sanding length of 26 625 m,which was 1.44 times of ordinary abrasive belt.When the decrease rate of equivalent abrasive particles height exceeded 52.58%and 40.72%,it was signaled that the life limits for material removal and sanding Sa were reached.Different processing goals dictated varied criteria for determining abrasive belts lifespan limits.For the fixed thickness sanding the decline in material removal served as a critical indicator.PSA demonstrated an overall decline in material removal.The gray prediction model demonstrated high accuracy and several advantages.For surface sanding,the lifespan was identified when the surface roughness value of the MDF dropped to a stable value and increased abruptly or the degree of dispersion increased.The abrasive height of PSA decreased progressively during sanding.Once it diminished to a critical level,the PSA lost its effectiveness in sanding due to the unstable state of the abrasive particles and bonding,blocking adhesives or other substances,thus leading to failure and reaching its service life.关键词
定组态砂带/中密度纤维板/砂带寿命/灰色预测模型Key words
precision-shaped abrasive belt/medium density fiberboard/lifespan/grey prediction model分类
轻工纺织引用本文复制引用
李春瑜,杜瑶,杨冲,罗斌,李黎,张树丽..碳化硅定组态砂带精磨中密度纤维板的寿命分析[J].林业工程学报,2025,10(5):47-54,8.基金项目
国家自然科学基金(32271787). （32271787）
