中英文磁粉探伤标准
ISSUED BY 发布人D. S. CrowtherENGINEERINGTEST INSTRUCTION工程测试说明书ELECTRO-MOTIVE DIVISIONGENERAL MOTORS COTPOTATIONLA GRANGE ILLIONIS通用汽车公司ELECTRO-MOTIVE公司伊利诺伊州，拉格朗日NUMBER号码G261APPROVED 批准W. H. MatthewsFIRST ISSUED 第一版June 14, 19561956年6月14日H. G. GutekunstSUPPERSEDES替换 SUBJECT MAGNETIC PARTICLE TEST – MISCELLANEOUS GEARS, PINIONS & SIMILAR PARTS 主题： 磁粉探伤—各种齿轮、小齿轮和相似零件AFFECTS MODELS ALL 涉及型号 所有PART NOS AFFECTED 涉及零件号 REF. DRAWINGS 参考图纸The following Engineering Test Instruction is to be used in the magnetic particle inspection of (B)various gears, pinions & similar parts designated on drawings, but not covered by a specific engineering test instruction. 下列工程测试说明书用在图纸中指定的但没有详细的工程试验说明的各种齿轮、 (B)小齿轮和相似零件的磁粉检查。
1. Setup准备A. Use AC or DC magnetizing unit capable of producing 1500 amperes of current. (B) 使用能够产生1500安培电流的直流或交流磁化仪器 (B)B. Use any of the following pastes or powder in a vehicle approved by the Magnaflux Corp.在溶剂中使用磁力探伤公司批准的下列磁膏和磁粉：1) No. 9 red paste, 1% per gallon 每加仑1%9号红磁膏2) No. 10 Magnaglo, 1/4 oz. per gallon 每加仑1/4盎司10号荧光磁粉3) No. 14 Magnaglo, 1/6 oz. per gallon 每加仑1/6盎司14号荧光磁粉2. Procedure 程序Due to the variation in sizes of gears and pinions which may be encountered, four procedures will be listed. The procedures are listed in the order of preference. 由于碰到的齿轮和小齿轮尺寸不同，列出4个程序，程序按优先顺序列出。
A. Procedure #1 – for gears and pinions up to approximately 15” outer diameter. (B) 1号程序—外径最大大约为15” 的齿轮和小齿轮 (B)1) Clamp gear or pinion between contact plates of magnetizing machine so that the current will pass through the part at right angles to the bore. (See Sheet #4).在探伤机的接触板之间夹住齿轮或小齿轮，使电流垂直通过齿轮孔见记录单4） REV修订版DATE日期R. F. C.参考PAGES AFFECTED涉及页码CMANGED BY修订人APPROVED批准B2-8-721972.02.08459951, 2W. H. MatthewsS. M. ChohanEMD 677 – E GV / jt ENGINEERING TEST INSTRUCTION NO 261 PAGE 1 OF 6 工程测试说明书 号码 261 共 6 页第 1 页2) Magnetize with two “shots” of 600 to 1200 amperes of current. Use lower end of current range for smaller gears or pinions.600 到 1200安培电流“放电”两次磁化。
较小齿轮或小齿轮用600安培电流3) Rotate part 90 and repeat magnetization using the continuous method each time.转动零件90度，用连续法重复磁化4) Inspect.检查5) If indications appear, reinspect residually. 如果出现磁写，用剩磁再检查B. Procedure #2 – For gears from approximately 15” to 30” outer diameter. 2号程序—外径大约为15英寸到30英寸的齿轮1) Suspend the gear in the special 33” I. D. coil with the axes of the gear and coil parallel.把齿轮吊进专用33”感应线圈，使齿轮轴与线圈平行2) Magnetize with two “shots” of 800-1000 amperes current. 800 到 1000安培电流放电两次磁化3) Gears should be held near the coil by raising and lowering the gear and energizing with two “shots” of maximum current at each of four positions – top, bottom, and each side as shown in the sketch on sheet #5. 通过升高和降低齿轮保持齿轮靠近线圈，在共四个位置的每个位置放电两次磁化---第5记录单所示的上、下和两侧。
4) Remove gear from coil and place over tray. 移走齿轮并放在小车上5) Thoroughly apply inspection medium.彻底喷涂探伤液6) Inspect residually. 剩磁法检查C. Procedure #3 – For gears over 30” outer diameter. 3号程序—外径大于30”的齿轮1) Wrap two or three turns of #0000 flexible cable around the outer diameter of the gear.在齿轮外径缠绕2到3圈#0000软电缆线2) Magnetize with two “shots” of 800 – 1000 amperes of current. 800到1000安培电流放电两次磁化3) Remove cable and suspend gear over tray.取下电缆，把齿轮吊在小车上方4) Thoroughly apply inspection medium. 彻底喷涂探伤液5) Inspect residually. 剩磁法检查。
D. Procedure #4 – Starter ring gears (B)4号程序—盘车齿轮 Follow instructions as outlined in the Engineering Approved Process Specification PS 4233以下说明在工程批准工序规范PS 4233中概述ETI #261 Page 2 ETI #261 第2页3. Inspection Standard检查标准 A. Quench cracks are cause for rejection. 淬火裂纹可以拒绝 B. No grinding cracks are permissible anywhere on the part.零件任何部位不允许有磨削裂纹。
C. No indications are acceptable in the root section. (See sheet #6). 在根部磁写是不可接受的（见#6记录单）D. Gears displaying other indications such as laps, folds, inclusions, etc., are to be held for review by members of the Metallurgical and Design Groups.显示其它磁写的齿轮，比如重叠、夹层、夹杂等，应扣下由冶金和设计组员评审4. Suppliers Note 供应商注意The supplier of the subject part are obliged to furnish parts to qualify under the provisions as stated when inspected at EMD as outlined herein. Equipment, supplies, and methods are optional to them. 标题零件的供应商有义务提供在EMD按此概述检查标准检查合格的零件。
设备、供货和方法对他们是可选的EMD 389 – B ETI NO 261 PAGE 3 ETI 号码 261 页码 3 EMD 677 – 2A ENGINEERING TEST INSTRUCTION NO. 261 SH. 4 OF 工程试验说明书 号码 261 共 张第 4 张EMD 677 – 2A ENGINEERING TEST INSTRUCTION NO. 261 SH. 5 OF 工程测试说明书 号码 261 共 张第 5 张 ROOT SECTION 根部剖面EMD 677 – 2A ENGINEERING TEST INSTRUCTION NO. 261 SH. 5 OF 工程测试说明书 号码 261 共 张第 6 张。
