試棒加工操作指導(dǎo)書

1、試棒加工操作指導(dǎo)書Working Instruction for Test Coupon Machining程序編號Procedure N.O程 序 版 本 號Procedure edition參考文件Reference 參考文件版本號Reference edition00 1.0目的Purpose指導(dǎo)操作工使用數(shù)控機(jī)床正確加工試棒，規(guī)范試棒加工的操作方法。This procedure is established to provide the test coupon requirements and cautions to the operator while machining the t

2、est coupon, 2.0范圍 Scope本規(guī)范適用于所有試棒加工。This procedure is applicable to the machining of all kinds of test coupon before testing.3.0職責(zé) Responsibility按照本程序操作是試樣加工操作人員的職責(zé)。Its the responsibility of the operator to ensure the compliance to this procedure.4.0參考規(guī)范 Reference standard：ASTM E 8/E 8M 金屬材料拉伸試驗方法 T

3、ension testing method of metallic materialsASTM B557 鍛造與鑄造鋁和鎂合金產(chǎn)品拉伸試驗的標(biāo)準(zhǔn)檢測方法Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products5.0設(shè)備 Equipment數(shù)控機(jī)床：按照 ASTM E 8/E 8M、 ASTM B557規(guī)范中尺寸要求進(jìn)行加工。CNC machine: being capable to machine the test coupon in accordance with ASTM

4、 E8/E8M and ASTM B557.6.0試棒 Test coupon試棒加工時要核對試棒數(shù)量、標(biāo)識、批次、材質(zhì)等信息是否與來料流程卡一致，確認(rèn)無誤后按要求進(jìn)行加工。6.1試棒尺寸應(yīng)按試驗材料產(chǎn)品技術(shù)條件規(guī)定，采用實際全尺寸或經(jīng)機(jī)械加工的試棒。Specimen SizeTest specimens shall be either substantially full size or machined, as prescribed in the productSpecifications for the material being tested.6.2鋼件標(biāo)準(zhǔn)試棒與小尺寸試棒加工尺寸如

5、圖1所示.6.2.1，直徑為12.5mm圓柱試棒普遍地應(yīng)用于鑄造和鍛造金屬材料試驗。The standard 12.5-mm diameter round test specimen is used quite generally for testing metallic materials, both cast and wrought.6.2.2當(dāng)試驗材料不能制備標(biāo)準(zhǔn)試棒時可以使用與標(biāo)準(zhǔn)試棒成比例的小試棒。采用這種任何小尺寸試棒時，保證測量伸長的標(biāo)距為試棒直徑的4倍。Small-size specimens proportional to the standard specimen may

6、be used when it is necessary to test material from which the standard specimen or specimens cannot be prepared. In any such small-size specimen it is important that the gage length for measurement of elongation be four times the diameter of the specimen. 6.2.3 試棒標(biāo)距以外的端部形狀，應(yīng)與材料和試驗機(jī)頭部或夾具相配合，以便使力能延軸向施加

7、。The shape of the ends of the specimen outside of the gage length shall be suitable to the material and of a shape to fit the holders or grips of the testing machine so that the forces may be applied axially. 名義直徑Nominal Dimeter尺 寸/英尺Dimensions/mm(in).標(biāo)準(zhǔn)樣件Stand Specimen與標(biāo)準(zhǔn)成比例的小尺寸樣件Small-Size Specime

8、ns Proportional to Standar12.5(0.500)9.0(0.350)6.0(0.250)4.0(0.160)G計量長度Gage length50.0±0.1(2.000±0.005)36.0±0.1(1.400±0.005)25.0±0.1(1.000±0.005)16.0±0.1(0.640±0.005)D直徑Diameter12.5±0.20(0.500±0.010)9.0±0.1(0.350±0.007)6.0±0.1(0.250&#

9、177;0.005)4.0±0.1(0.160±0.003)R圓角半徑，最小Radius of fillet，min10 (0.375)8 (0.25)6 (0.188)4 (0.156)A-Lenghof reducedmin56（2.25）45（1.75）30（1.25）20（0.75）圖1 有2in計量長度的標(biāo)準(zhǔn)0.500in圓形拉伸試驗樣件和與標(biāo)準(zhǔn)樣件成比例的小樣件Standard 0.500in.Round Tension Test Specimen with 2in.Gage Length and Example of Small-Size Specimens Proportional to the Standar Specimen6.2.4如果沒有特殊規(guī)定，所有鋼件試棒加工尺寸按圖2 加工成小試棒。 B 圖：2圖2 中：直徑D=6.0±0.1mm，計量長度G=25±0.1mm，圓角最小半徑R=6mm，A 長度為最小30mm。試棒兩端夾頭長度B最小為25mm, 6.2.4.1試棒加工完畢后，操作工測量確認(rèn)尺寸符合后送檢驗員檢驗拉伸。6.3 對于鋁合金試棒，試棒澆注成標(biāo)準(zhǔn)試棒后，如果試棒表面有毛刺或者尺寸超差，無法滿足測試要求的，操作工必須按圖3所示尺寸對試棒進(jìn)行加工。 圖：3