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表表1 1 模模塑塑件件尺尺寸寸公公差差表表来自中华人民共和国国家标准GB/T 14486-2008 单位:毫米 公差等级公差种类基 本 尺 寸03610141824304050658010012014016018020022525028031535540045050063080036101418243040506580100 120 140 160 180 200 225 250 280 315 355 400 450 500 630 800 1000标注公差的尺寸公差值MT1a0.070.080.090.100.110.120.140.160.180.200.230.260.290.320.360.400.440.480.520.560.600.640.700.780.860.971.161.39b0.140.160.180.200.210.220.240.260.280.300.330.360.390.420.460.500.540.580.620.660.700.740.800.880.961.071.261.49MT2a0.100.120.140.160.180.200.220.240.260.300.340.380.420.460.500.540.600.660.720.760.840.921.001.101.201.401.702.10b0.200.220.240.260.280.300.320.340.360.400.440.480.520.560.600.640.700.760.820.860.941.021.101.201.301.501.802.20MT3a0.120.140.160.180.200.220.260.300.340.400.460.520.580.640.700.780.860.921.001.101.201.301.441.601.742.002.403.00b0.320.340.360.380.400.420.460.500.540.600.660.720.780.840.900.981.061.121.201.301.401.501.641.801.942.202.603.20MT4a0.160.180.200.240.280.320.360.420.480.560.640.720.820.921.021.121.241.361.481.621.802.002.202.402.603.103.804.60b0.360.380.400.440.480.520.560.620.680.760.840.921.021.121.221.321.441.561.681.822.002.202.402.602.803.304.004.80MT5a0.200.240.280.320.380.440.500.560.640.740.861.001.141.281.441.601.761.922.102.302.502.803.103.503.904.505.606.90b0.400.440.480.520.580.640.700.760.840.941.061.201.341.481.641.801.962.122.302.502.703.003.303.704.104.705.807.10MT6a0.260.320.380.460.520.600.700.800.941.101.281.481.722.002.202.402.602.903.203.503.904.304.805.305.906.908.5010.60b0.450.520.580.660.720.800.901.001.141.301.481.681.922.202.402.602.803.103.403.704.104.505.005.506.107.108.7010.80MT7a0.380.460.560.660.760.860.981.121.321.541.802.102.402.703.003.303.704.104.504.905.406.006.707.408.209.6011.9014.80b0.580.660.760.860.961.061.181.321.521.742.002.302.602.903.203.503.904.304.705.105.606.206.907.608.409.8012.1015.00未注公差的尺寸允许偏差MT5a0.100.120.140.160.190.220.250.280.320.370.430.500.570.640.720.800.880.961.051.151.251.401.551.751.952.252.80 3.45b0.200.220.240.260.290.320.350.380.420.470.530.600.670.740.820.900.981.061.151.251.351.501.651.852.052.352.90 3.55MT6a0.130.160.190.230.260.300.350.400.470.550.640.740.861.001.101.201.301.451.601.751.952.152.402.652.953.454.25 5.30b0.230.260.290.330.360.400.450.500.570.650.740.840.961.101.201.301.401.551.701.852.052.252.502.753.053.554.35 5.40MT7a0.190.230.280.330.380.430.490.560.660.770.901.051.201.351.501.651.852.052.252.452.703.003.353.704.104.805.95 7.40b0.290.330.380.430.480.530.590.660.760.871.001.151.301.451.601.751.952.152.352.552.803.103.453.804.204.906.05 7.50注1：a为不受模具活动部分影响的尺寸公差值；b为受模具活动部分影响的尺寸公差值。注2：MT1级为精密级，具有采用严密的工艺控制措施和高精度的模具、设备、原料时才有可能选用。 表表2 2 常常用用材材料料模模塑塑件件尺尺寸寸公公差差等等级级的的选选用用来自中华人民共和国国家标准GB/T 14486-2008材料代号塑件材料公差等级标注公差尺寸未注公差尺寸高精度一般精度 ABS(丙烯腈-丁二烯-苯乙烯)共聚物MT2MT3MT5CA乙酸纤维素MT3MT4MT6EP环氧树脂MT2MT3MT5PA聚酰胺无填料填充MT3MT4MT630%玻璃纤维填充MT2MT3MT5PBT聚对苯二甲酸丁二酯无填料填充MT3MT4MT630%玻璃纤维填充MT2MT3MT5PC聚碳酸酯MT2MT3MT5PDAP聚邻苯二甲酸二烯丙酯MT2MT3MT5PEEK聚醚醚酮MT2MT3MT5PE-HD高密度聚乙烯MT4MT5MT7PE-LD低密度聚乙烯MT5MT6MT7PESU 聚醚砜MT2MT3MT5PET聚对苯二甲酸乙二酯无填料填充MT3MT4MT630%玻璃纤维填充MT2MT3MT5PF苯酚-甲醛树脂无机填料填充MT2MT3MT5有机填料填充MT3MT4MT6PMMA聚甲基丙烯酸甲酯MT2MT3MT5POM聚甲醛150 mmMT3MT4MT6150 mmMT4MT5MT7PP聚丙烯无填料填充MT4MT5MT730%无机填料填充MT2MT3MT5PPE聚苯醚；聚亚苯醚MT2MT3MT5PPS聚苯硫醚MT2MT3MT5PS聚苯乙烯MT2MT3MT5PSU聚砜MT2MT3MT5PUR-P热塑性聚氨酯MT4MT5MT7PVC-P软质聚氯乙烯MT5MT6MT7PVC-U未增塑聚氯乙烯MT2MT3MT5SAN(丙烯腈-苯乙烯)共聚物MT2MT3MT5UF脲-甲醛树脂无机填料填充MT2MT3MT6有机填料填充MT3MT4MT6UP不饱和聚酯30%玻璃纤维填充MT2MT3MT5检验方法：模塑件的检验应在成型之后，在GB/T29181998规定的标准温度（232）和湿度（50%5%）状态下放置24h或经“后处理”后，在此温度和湿度条件下用千分尺或精度不低于0.02mm的游标尺按GB/T17037.42003进行测量，对于超小型或大型塑件还可用投影仪等光学方法测量，塑件上同一部位应随机抽样测量5次，取其平均值并提供附有制品图样的检验报告。2011.4.15表表1 1 模模塑塑件件尺尺寸寸公公差差表表来自中华人民共和国国家标准GB/T 14486-2008 单位:毫米 公差等级公差种类基 本 尺 寸03610141824304050658010012014016018020022525028031535540045050063080036101418243040506580100 120 140 160 180 200 225 250 280 315 355 400 450 500 630 800 1000标注公差的尺寸公差值MT1a0.070.080.090.100.110.120.140.160.180.200.230.260.290.320.360.400.440.480.520.560.600.640.700.780.860.971.161.39b0.140.160.180.200.210.220.240.260.280.300.330.360.390.420.460.500.540.580.620.660.700.740.800.880.961.071.261.49MT2a0.100.120.140.160.180.200.220.240.260.300.340.380.420.460.500.540.600.660.720.760.840.921.001.101.201.401.702.10b0.200.220.240.260.280.300.320.340.360.400.440.480.520.560.600.640.700.760.820.860.941.021.101.201.301.501.802.20MT3a0.120.140.160.180.200.220.260.300.340.400.460.520.580.640.700.780.860.921.001.101.201.301.441.601.742.002.403.00b0.320.340.360.380.400.420.460.500.540.600.660.720.780.840.900.981.061.121.201.301.401.501.641.801.942.202.603.20MT4a0.160.180.200.240.280.320.360.420.480.560.640.720.820.921.021.121.241.361.481.621.802.002.202.402.603.103.804.60b0.360.380.400.440.480.520.560.620.680.760.840.921.021.121.221.321.441.561.681.822.002.202.402.602.803.304.004.80MT5a0.200.240.280.320.380.440.500.560.640.740.861.001.141.281.441.601.761.922.102.302.502.803.103.503.904.505.606.90b0.400.440.480.520.580.640.700.760.840.941.061.201.341.481.641.801.962.122.302.502.703.003.303.704.104.705.807.10MT6a0.260.320.380.460.520.600.700.800.941.101.281.481.722.002.202.402.602.903.203.503.904.304.805.305.906.908.5010.60b0.450.520.580.660.720.800.901.001.141.301.481.681.922.202.402.602.803.103.403.704.104.505.005.506.107.108.7010.80MT7a0.380.460.560.660.760.860.981.121.321.541.802.102.402.703.003.303.704.104.504.905.406.006.707.408.209.6011.9014.80b0.580.660.760.860.961.061.181.321.521.742.002.302.602.903.203.503.904.304.705.105.606.206.907.608.409.8012.1015.00未注公差的尺寸允许偏差MT5a0.100.120.140.160.190.220.250.280.320.370.430.500.570.640.720.800.880.961.051.151.251.401.551.751.952.252.803.45b0.200.220.240.260.290.320.350.380.420