JB/T 7859-2000 稻谷加工工业用钢丝编织长孔筛网

JB/T7859-2000前言本标准是对JB/T7859-1995《稻谷加工工业用钢丝编织长孔筛网》的修订。修订时对原标准进行了编辑性的修改,主要技术内容没有变化。本标准自实施之日起代替JB/T7859—1995。本标准由全国筛网筛分标准化技术委员会提出并归口。本标准起草单位:机械科学研究院国营九六九九厂、国营540厂、西安西缆钢网厂本标准主要起草人:余方、宋秀波宋如轩、贺永利本标准于1985年以GB533185首次发布,于1996年4月标准号调整为JB/T7859—95493中华人民共和国机械行业标准稻谷加工工业用JB/T7859-2000钢丝编织长孔筛网代替J/T7859-1995Woven steel cloth with rectan gual aperturesfor rice milling industry1范围本标准规定了稻谷加工工业用钢丝编织长孔筛网的型号规格、标记和技木要求本标准适用于稻谷加工筛分用钢丝编织长孔筛网2引用标准下列标准所包含的条文,通过在本标准中引用而构成为本标准的条文。本标准出版时,所示版本均为有效。所有标准都会被修订,使用木标准的各方应探讨使用下列标准最新版本的可能性。GB/T343-1994一般用途低碳钢丝GB/T4240—1993不锈钢丝3规格、型号3.1型号G C筛网(网)长孔(长)工业用(工)3.2规格筛网规格用经丝间的网孔基本尺寸Wk、纬丝间的网孔基本尺寸W和钢丝直径d表示(见图1、图2)。3.3标记用型号、规格和本标准编号表示筛网。示例:经丝间的网孔基本尺寸Wk为5.00mm、纬丝间的网孔基本尺寸W,为5.60mm,钢丝直径d为0.90mm的钢丝编织长孔筛网,标记为:GCW5.00×5.60/0.90JB/T7859—2000国家机械工业局2000-11-28批准2001-06-01实施494JB/T7859-2000W图1长网孔WW,4技术要求41网孔基本尺寸、网孔算术平均尺寸偏差、大网孔尺寸偏差及允许数量、钢丝直径及极限偏差,应符合表1或表2的规定4.2材料42.1钢丝材料应采用热处理后软态的镀锌低碳钢丝、低碳钢丝和不锈钢丝,应符合GB/T343的规定根据用户要求也可采用其他钢丝编织。4.2.2钢丝表面应光滑,不得有裂纹和起皮,允许有氧化色。4.3筛网4.3.1筛网应全部采用平纹编织。4.32网面应平整、清洁,不许有断丝、松丝、锈蚀及机械损伤。允许有经丝接头,但应编结紧密4.3.3回鼻及不超过30mm的跳丝等编织缺陷,在15m2网面上数量不得多于30个,但在任一平方米内数量不得超过6个。大于或小于15m2网段的缺陷数按比例折算。4.4网幅宽度为500,630,800,100,1250mm,其偏差为士1%。495JB/T7859-2000根据用户要求也可制造其他网幅宽度的筛网。45筛网应成卷供应,每卷长度不少于15m。每卷由一段或两段组成,网段最小长度不少于2.5m同卷内必须是同一材料同一规格组成。5试验方法51筛网的检查,应放在检验台上进行。5.2筛网编织质量的检验,按43的要求目测检验。5.3大网孔尺寸的检验,用目测先找出大孔再用分度值为0.5mm的钢板尺或分度值为0.1mm的游标卡尺按经纬向分别测量但距网边不小于20mm。大网孔的数量,在200mm×200mm面积上测定5.4网孔算术平均尺寸的检验,应在网孔尺寸偏差最大处,按经、纬向分别测量,在每5m2的网面上测定三处。各测量处间的连线,均不得与经、纬向平行。测量部位任意选择不小于20mm。网孔平均尺寸用分度值为05mm的钢板尺或分度值为0.1mm的游标卡尺测量连续分布10个网孔间距的长度,并按式(1)式(2)计算:WKlk1010d………(2)式中:Wk一经丝间网孔箅术平均尺寸,mm;W、一纬丝间网孔算术平均尺寸hm ilk-纬向上连续分布10个网孔间距所占的长度,mm;l-经向上连续分布10个网孔间距所占的长度,mm;d—钢丝直径,mm。5.5钢丝直径应测量不少于5根经丝和5根纬丝的平均值。测量时用分度值为0.01mm的千分尺或用分度值为0.01mm放大20~40倍的显微镜测量。55网宽和网长,用分度值为1mm的量尺测量6检验规则6.1筛网应由制造厂质量检验部门,按第2章和第3章逐卷逐段检验6.2检验项目应包括a)筛网编织质量;b)刚孔算术平均尺寸;c)大网孔尺寸及数量;d)钢丝直径及材料;e)网宽、网长及数量。7标志、包装、远输及贮存7.1标志71.1每卷筛网上应附有产品合格证,并应标明:a)产品名称;b)筛网标记;c)材料;d)网宽、网长及数量;e)检验结果;496JB/T78592000f)检验日期及检验人员盖章;g)制造厂名称7.1.2外包装上应标明a)产品名称b)筛网标记;c)重量,kgd)制造厂名称;e)“小心轻放”“严防潮湿”等字样或标志。7.2包装筛网应卷成筒形捆扎,内用防潮纸,外用箱盒或包装布严密包装。7.3运输、贮存7.3.1运输应有防雨、防潮揹施。7·3.2应贮存于干燥及无腐蚀的场所。不得在内包装受到破坏的情况下贮存。表1长孔筛网网孔基本尺寸网孔尺寸偏差大网孔钢丝直径网孔基本经丝间网孔纬丝间网孔经丝间网孔纬丝间网孔经丝问大纬丝间大允许数量基本尺寸基本尺寸基本尺寸算术平均尺算术平均尺网孔尺寸网孔尺寸%尺寸/限Wk×W寸偏差寸偏差偏差偏差偏差1.126.30×7.106.307.100!±0.041、125.60×7.105.601.00±0.040.9090±0.045.60×6.305.606.300.80±0.03711士0.030.90}士0.045.00×5.60.005.600.80士0.030.71±0.03土6±823~40|28~45|≤120.90±0.044.75×6.304.756.300.80±0.030.7±0.030.90±0.044,75×5.604,755,600.80±0.030.71±0.030.90(士0.044.50×5.604.505.600.80±0.03071±0,03±0.044.50×5.004.500.80±0.030.71±0.03JB/T7859-2000表1(完)mm网孔尺寸偏差网孔基本尺寸钢丝直径%大网孔网孔基本」经丝间网孔纬丝间网孔|经丝间网孔纬丝间网孔」经丝间大纬丝间大允许数量「蓄本尺寸基本尺寸基本尺寸算术平均尺算术平均尺】网孔尺寸网孔尺寸%尺寸|限W×WW寸偏差寸偏差偏差偏差偏差d0.90士0.044.25×5604.250.80±0.030:71±0.030.90(±0.04.750.80±0,030.71士0.030.90}±04.00×5.004.005.000.80±0.030.71±0.030.714.00×4.754.004.750.60.560.714.00×4504.000.630.560.713.75×4,253.754.250.56±6±83~4028-45≤120.713.55×4.503.554.500.563.55×4,00000.63±0.030.560.713.15×4.00|3.154.000.560.713.15×3.553.153.550,630.713.00×3.753.000.630.563.00×3.153.t50,63JB/T7859—2000表2宽孔筛网网孔基本尺寸网孔尺寸偏差‰钢丝直径大网孔网孔基本经丝间网孔纬丝问网孔经丝间网孔纬丝间网孔经丝问大纬丝间大允许数量基本尺寸基本尺寸基本尺寸算术平均尺算术平均尺网孔尺寸网孔尺寸%尺寸极限W×WW寸偏差寸偏差偏差偏差偏差d7.10×6.307.106.301.00±0.041.127.10×5,607105.6D1.00±0.040.900.90±0.046.30×5.606.305.600.80±0.030.71±0.030.90±0.560×5.005.600.80±0.030.71±0.030.90±0.046.30×4.756.304.750.80±0.030.71±0.0390(±0.04560×4,755.604.750,80±0.030,71±0.030.90士0.560×4505.608030.71±0.030.90±0.045.00×4.505.004.500±0.030.71±0.030.900.04560×4.255.604.250.80±0.030.71±0.030,90±0.044.75×4.254.750,80±0.030.71±0.030.90±0.04500×4.005.00.80±0.030.71士0.030.714.75×4,004.754.000.63±0.03499JB/T7859-2000表2(完)T网孔基本尺寸网孔尺寸偏差%钢丝直径大网孔网孔基本经丝间网孔纬丝间网孔}经丝间网孔纬丝间网孔经丝间大纬丝间大允许敷量譫本微限尺寸基本尺寸基本尺寸算术平均尺算术平均尺网孔尺寸网孔尺寸%Wk×W,W寸偏差寸偏差偏差偏差尺寸情差0.714.50×4.00}4,500.830.560.714.25×3.754.250.560.71450×3.554.503.550.630.560.714.00×3.55}4.003.550.630.56士6士823~40(28~45≤12±0.030.714.00×3.15}4.003.150.630.560.71355×3.153.553.150.630.560.71375×3.003.750,630.563.15×3.003.150.630.56500JB⌒T7859-2000附录A提示的附录稻谷加工工业用钢丝编织长孔筛网结构参数及目数对黑表稻谷加工工业用钢丝编织长孔筛网结构参数及目数对照表见表A1。表A1网孔基本尺寸钢丝直径筛分面积百分率单位面积网重相当英制目数W2×WAmm Xmmg/m1.12732.993.42×3.096.30×7.101.00763.48×3.140.90781.403.53×3.181.122,23.78×3.095.60X7.10l.003.85×3.140901.483.91×3.180.901.553.91×3.535.60×6.300.80781.233.97×3.580.71800.994.93×3.620.9073l.724.31×3.95.00×5.600.80751.364.38×3.9T0.71781.104.45×4.030.911.674.50×3.534.75×6.300.801.334.58X3.580,71781.074.65×3.620.90721.754.50×3.914.75X5.600.80754.58×3.970.71771.120,90721.8070×3.914.50×5.600.801.434,79×3.970.71771.154.88×4.030.904.70×4.314.50X5000.801.494.79×4.380.7176l.214.88×4.450.91.8493×3.914.25×5.60741.465.03×3,970,71761.185.12X4.030.90694.93×4.504.25×40,80725.03×4.58755,12×4.650.901.985,18×4.314.00×5.000,80721.575.29×40.71741.27501JB/T78592000表A1(续)网孔基本尺寸钢丝直径筛分面积百分率单位面积网重相当英制目数W;×Wrnm×mmnkg/m目/in0.71741.305.39×4.654.00×4.750.631.025.49×4.720,56780.825.57×4.780.71.335.39×4.884.00×4.590.63761.055.49X4.95O,56780.845.57×5.020.711.405.70×5.123.75×4.250.631.105.80×5.200.560,895.89×5.21,405.96X4.883.55×4.500.63741.106.08×4.950.560.896.18×5.020.71711.475.96X5.393.55×4.000.631.166.08×5.490.5676O,936,18×5.571.556.58×5.393,15×4,001.226.72×5.490.56740,986.85×5.570.711.586.58×5.963.15×3.550.63716.72×6.080.56731.006.85X6.181.626.85X5.703.00×3.750.631.287.00×5.800.51.037.13×5.890.711.746.85X6.583.00X3.150.63691.377.00×6.720.561.117.13X6.851.122.093.09×3.427.10×6.301.001.713.14x3.480.90781.403,18×3,531.123.09×3.77.10×5.603.14×3,910.90761.483.18×3.910.903.53×3.916.30×5.600.803.58×3.970.71800.993.62X4.03731.724.91×4.315.60×5.000.80751.360.71781.104.03×4.45502JB/T7859-2000表A1(续)网孔基本尺寸钢丝直径筛分面积百分率单位面积网重相当英制目数W4×WArm x mmmm%目/in0.90743.53×4.506.30X4.751.333.58×4.580,711.073.62X4,650.901.753.91x4,505.60×4.750.801.393.97×4.580.711.124.03X4.650.901.803.9×4.705.60X4.500.874l.433.97×4.790.71771.154.03×4.880.90711.884.31X4.705.00×4.500.801.494.38×4.790.711.214.45×4。880.903.91×4.935.60X4.2574.463.97×5.030.71761.184.03×5.120.90691,974.50×4.934,75X4.250.80721.564.58X5.030.71751.264.65×5,120.901.984.31×5.185.00×4,000.80721.574.38×5.290.71741.274.45×5,390.711.304.65×5.394.75×4.000.63764.72×5.490.56780.824.78×5.570,71734.88×5.394.50×4.004.95×5.490.560.845.02×5.57721.405.12×5.74,25×3.750.631.105.20X5.800.560.895.28×5.89711.404.88×5.964.50×3.550.63741,104.95×6,080.565.02X6,180.71711.475.39X5.964.00×3.550.631.165.49×6.080.56760.935.57×6.180.7169l.555.39×6.584.00×3.150,63725.49×6.720.56745.57×6.85JB/T7859-2000表A1(完)网孔基本尺寸钠丝直径筛分面积百分率单位面积网重相当莫制目数W×WAommx mm%kg/m目/in0.715.96×63.55×3.150.636.08×6.720.56731.006.18×6.850.71681.625.70X6.853,75×3.000.635.80×7.000.56731.035.89×7.130.711.746.58×6.853.15×3.000.631.376.72×7.000,56721.116.85X7.13注:单位面积网重是根据低碳钢的密度P=7850kg/m3计算而得504