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表表1 1 模模塑塑件件尺尺寸寸公公差差表表來自中華人民共和國國家標準GB/T 14486-2008 單位:毫米 公差等級公差種類基 本 尺 寸03610141824304050658010012014016018020022525028031535540045050063080036101418243040506580100 120 140 160 180 200 225 250 280 315 355 400 450 500 630 800 1000標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未注公差的尺寸允許偏差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為不受模具活動部分影響的尺寸公差值；b為受模具活動部分影響的尺寸公差值。注2：MT1級為精密級，具有采用嚴密的工藝控制措施和高精度的模具、設(shè)備、原料時才有可能選用。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級級的的選選用用來自中華人民共和國國家標準GB/T 14486-2008材料代號塑件材料公差等級標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乙酸纖維素MT3MT4MT6EP環(huán)氧樹脂MT2MT3MT5PA聚酰胺無填料填充MT3MT4MT630%玻璃纖維填充MT2MT3MT5PBT聚對苯二甲酸丁二酯無填料填充MT3MT4MT630%玻璃纖維填充MT2MT3MT5PC聚碳酸酯MT2MT3MT5PDAP聚鄰苯二甲酸二烯丙酯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聚對苯二甲酸乙二酯無填料填充MT3MT4MT630%玻璃纖維填充MT2MT3MT5PF苯酚-甲醛樹脂無機填料填充MT2MT3MT5有機填料填充MT3MT4MT6PMMA聚甲基丙烯酸甲酯MT2MT3MT5POM聚甲醛150 mmMT3MT4MT6150 mmMT4MT5MT7PP聚丙烯無填料填充MT4MT5MT730%無機填料填充MT2MT3MT5PPE聚苯醚；聚亞苯醚MT2MT3MT5PPS聚苯硫醚MT2MT3MT5PS聚苯乙烯MT2MT3MT5PSU聚砜MT2MT3MT5PUR-P熱塑性聚氨酯MT4MT5MT7PVC-P軟質(zhì)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-甲醛樹脂無機填料填充MT2MT3MT6有機填料填充MT3MT4MT6UP不飽和聚酯30%玻璃纖維填充MT2MT3MT5檢驗方法：模塑件的檢驗應(yīng)在成型之后，在GB/T29181998規(guī)定的標準溫度（232）和濕度（50%5%）狀態(tài)下放置24h或經(jīng)“后處理”后，在此溫度和濕度條件下用千分尺或精度不低于0.02mm的游標尺按GB/T17037.42003進行測量，對于超小型或大型塑件還可用投影儀等光學(xué)方法測量，塑件上同一部位應(yīng)隨機抽樣測量5次，取其平均值并提供附有制品圖樣的檢驗報告。2011.4.15表表1 1 模模塑塑件件尺尺寸寸公公差差表表來自中華人民共和國國家標準GB/T 14486-2008 單位:毫米 公差等級公差種類基 本 尺 寸03610141824304050658010012014016018020022525028031535540045050063080036101418243040506580100120140160180200225250280315355400450500630800 1000標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未注公差的尺寸允許偏差MT5a0.10 0.12 0.14 0.16 0.19 0.22 0.25 0.28 0.32 0.37 0.43 0.50 0.57 0.64 0.72 0.80 0.88 0.96 1.05 1.15 1.25 1.40 1.55 1.75 1.95 2.25 2.80 3.45b0.20 0.22 0.24 0.26 0.29 0.32 0.35 0.38 0.42 0.47 0.53 0.60 0.67 0.74 0.82 0.90 0.98 1.06 1.15 1.25 1.35 1.50 1.65 1.85 2.05 2.35 2.90 3.55MT6a0.13 0.16 0.19 0.23 0.26 0.30 0.35 0.40 0.47 0.55 0.64 0.74 0.86 1.00 1.10 1.20 1.30 1.45 1.60 1.75 1.95 2.15 2.40 2.65 2.95 3.45 4.25 5.30b0.23 0.26 0.29 0.33 0.36 0.40 0.45 0.50 0.57 0.65 0.74 0.84 0.96 1.10 1.20 1.30 1.40 1.55 1.70 1.85 2.05 2.25 2.50 2.75 3.05 3.55 4.35 5.40MT7a0.19 0.23 0.28 0.33 0.38 0.43 0.49 0.56 0.66 0.77 0.90 1.05 1.20 1.35 1.50 1.65 1.85 2.05 2.25 2.45 2.70 3.00 3.35 3.70 4.10 4.80 5.95 7.40b0.29 0.33 0.38 0.43 0.48 0.53 0.59 0.66 0.76 0.87 1.00 1.15 1.30 1.45 1.60 1.75 1.95 2.15 2.35 2.55 2.80 3.10 3.45 3.80 4.20 4.90 6.05 7.50注1：a為不受模具活動部分影響的尺寸公差值；b為受模具活動部分影響的尺寸公差值。注2：MT1級為精密級，具有采用嚴密的工藝控制措施和高精度的模具、設(shè)備、原料時才有可能選用。