平底孔试块制作规范

1、平底孔试块制作规范1#概述#平底孔试块划按材质分三组试块，4130, 4141, 410各9块，分为二大类型：I-4-XXXX(PA YYY类型)，I-8-XXXX ( PB YYY类型)，每种类型由9块试块组成。每种类型平底孔直径分别为：0.0625i n(1.6mm)3 块，0.125i n(3.2mm)6 块，具体参数见表所示：对比试块制作参数序号试块类型A 高度 mm(in.)C 直径 in. (mm)B 孑L深 in. (mm)孑L径 in. (mm)1I-4-005013 (0.5 )2 (50.8 )0.75 (19)1/16 (1.6 )2I-4-010025.4 (1)2 (

2、50.8 )0.75 (19)1/16 (1.6 )3I-4-015038.1 (1.5 )2 (50.8 )0.75 (19)1/16 (1.6 )4I-8-010025.4 (1)2 (50.8 )0.75 ( 19)1/8 (3.2 )5I-8-020050.8 (2)2 (50.8 )0.75 ( 19)1/8 (3.2 )6I-8-030076.2 (3)2 (50.8 )0.75 ( 19)1/8 (3.2 )7I-8-0400101.6 (4)2 (50.8 )0.75 ( 19)1/8 (3.2 )8I-8-0500127 (5)2 (50.8 )0.75 ( 19)1/8 (

3、3.2 )9I-8-0600152.4 (6)2 (50.8 )0.75 ( 19)1/8 (3.2 )备注：ASTM E428-2008制作要求A Metal travel dista nee0.±5 in. (0.38 mm)A金属行程 ±0.015 in. (0.38 mm)B Hol e depth 3?4 in. nominal士 1?16 in. (1.6 mm)B孔深 3?4” 公称 士 1?16.(1.6 mm)C Block diameter tolera nee0.030 in. (0.76 mm)2-i n. (50.8-mm) diameter fo

4、r test dista nces up to 6 in. (152 mm)21?2-i n. (63.5-mm) diameter for test dista nces over 6 in. up to 12 in. (305 mm)Larger diameters or serrati ons may be required for test dista nces over 12 in.C 试块直径公差 士 0.030 ” (0.76 mm)检测距离 w 6” (152 mm)，直径 2” (50.8-mm)6” 检测距离 < 12” (305 mm)，直径 21?2” (63.5

5、nm)检测距离>12”，可以要求更大的直径或锯齿D Hole diameter tolera nee0.±005 in. (0.013 mm) for holes 1?16 in. (1.6 mm) and smaller,士 0.001 in. (0.03 mm) for holes larger than 1?16 in. (1.59 mm)Dw 1?16 “ (1.6 mr的孔，孔径公差士 0.0005 ” (0.013 mm)>1?16 “ (1.59 mm)的孑L,孑L径公差士 0.001“ (0.03 mm)E Surfaces to be flat with

6、in 0.0005 in. (0.01 mm) and parallel to within 0.001 in. (0.02 mm).Due to possible edge build-up duri ng the plati ng process, this tolera nee applies only to thearea exclusive of that with in 1?8 in. (3.2 mm) of the block edges.E 表面平整度/平直度在0.0005 ” (0.01 mm)内且平行度在 0.001 ” (0.02 mm)内由于镀层/电镀期间可能的边缘堆起

7、，该公差仅适用于试块边缘1?8 in. (3.2 mm)以外的部分F Hole must be straight and perpe ndicular to the test surface with in 020 min. °F 孔必须竖直并和测试面垂直，(偏差)在0° 20最小值G Hole bottom must be flat within 0.001 in ./1?8 in. (1 mm/125 mm) and located within 0.015 in.(0.38 mm) of lon gitud inal axis.G 孔底的平直度必须在 0.001 ”

8、./1?8 ” (1 mm/125 mm并位于纵轴的0.015 ” (0.38 mm)H Flat cou nterbore 0.250 diameter by 0.064 in. deep.H 浅扩孔(或平地扩孔)0 0.250 X 0.064 ”深I Typical Block Ide ntificatio n:I典型试块标识8 = Hole size in 1?64 -in. increments.8 = 孔尺寸 1?64”增量1181 = Metal travel in 00.00 in.1181 =金属行程，单位00.00 ”1.1对比试块粗加工要求准备制作 8630-4-XXXX(

9、 PAYYY类型)，8630-8-XXXX ( PBYYY类型)，8630-16-XXXX(PCYYY类型)三组平底孔试块各6只，锻造后超声波检测无当量平底孔直径0.8mm以上缺陷，进入热处理。每只试块在表中给定尺寸基础上，高度方向加大10m m直径方向加大6mm加工成圆棒，不加工孔。22对比试块精加工要求按照 ASTM E 428-2008 标准要求，8630-4-XXXX （PA YYY类型），8630-8-XXXX （ PBYYY类型），8630-16-XXXX （ PCYYY类型）三组平底孔试块各6只，每只试块均加工成平底孔、复孔及刻阴字标识，具体尺寸及公差见图、表、备注所示。试块人工平底孔内部制作成复型模形，复型模形强度必须可靠，提供平底孔复制品在光学比较仪上用观察屏观察到的投影图（放大倍20）电子照片，每只