CWI考试的第二部分习题part-b

CWI考试的第二部分习题part-b Visual inspection worksheet (spring 1991) (目視檢驗工作) Select the correct answer for the following questions. Refer to the “Examination Book of Specifications” for the appropriate information. (為下列問題選擇正確答案，請參考”檢驗技術要求”) 1. The designer has detailed the joint B-U2-GF for the welding of two structural members. What is the acceptable range of root opening dimensions for that joint configuration ? (設計者要求兩個構件的接頭形式為B-U2-GF，請問根部間範圍是？) a. 0 to 1/8〞 b. 1/16 to 3/16 c. 0 to 1/4〞 d. 0 to 3/16〞 e. none of the above (以上答案都不對) 2. Where would the designation A5.18,A5.29,etc.appear on the form in Appendix I ? (A5.18,A5.29應該在附錄I中出現在哪裡？) a. Space #5 (#5空格) b. Space #6 (#6空格) c. Space #7 (#7空格) d. Space #1 (#1空格) e. None of the above (以上答案都不對) 3. Which of the following would be an acceptable electrode for GMAW of 3〞 thick A514 steel ? (對於氣體保護焊焊接3〞厚的A514鋼板，應使用下列哪種焊條？) a. E10XT b. ER100S c. ER110S d. All of the above (所有以上焊條) e. None of the above (以上答案都不對) 4. For the condition listed in Question #3, what is the required preheat and interpass temperature ? (對於#3問題中的情況，預熱溫度和層間溫度的要求是什麼) a. 225? minimum (最低225?) b. 225? maximum (最高225?) c. 225? min.- 450? max. (最低225?，最高450?) d. 225? min.- 400? max. (最低225?，最高400?) e. none of the above (以上答案都不對) Butt Weld Sample (對接焊縫試樣) 5. What is the depth of the undercut on this weld sample ? (本焊縫試樣中咬邊深度為多少) a. 1/16〞 1 Visual inspection worksheet (spring 1991) (目視檢驗工作表) b. .003mm c. 1/32〞 d. 5.01mm 6. The weld reinforcement on this sample is (本焊縫加強餘高為多少) a. 1/32〞– 1/8〞 b. 0.8mm – 3.2mm c. 1/2〞– 5/8〞 d. both a and b (a和b都對) 7. Which of the following processes would be acceptable for the pre-qualified joining B-U2-GF ? (下列哪種方法用於B-U2a-GF接頭可免除工藝評定？) a. FCAW (藥芯焊絲氣體保護焊) b. SMAW (手工電弧焊) c. GTAW (鎢極氬弧焊) d. SAW (埋弧自動焊) e. All of the above (所有以上答案) The following information applies for questions 8 through 14 below：(下列資訊用於問題8-14) A welding procedure is being qualified for the welding of A514 plate for a bridge application. The welding process to be used is FCAW, and the weld configuration is single-V-groove weld with a steel backing. The thickness of the test coupon is 1-1/2〞. This procedure coupon is being welded in the 2G position. (一種焊接工藝用於橋樑焊接A514板材，焊接方法為藥芯焊絲氣體保護焊， 接頭形式為單V形坡口，帶鋼襯板。工藝評定用鋼板厚度為1-1/2〞，焊接位置為2G) 8. What is a matching filler metal classification for this procedure ? (該評定應使用哪種填充金 屬) a. E11XT with a minimum impact strength of 20 ft-1bs at 0? (最低沖擊性能為0?時 20ft-1bs的E11XT) b. E10XT c. E8XT d. E8XT with a minimum impact strength of 20 ft-1bs at -18? (最低沖擊性能為-18?時 20ft-1bs的E8XT) e. None of the above (以上答案都不對) 9. What is the required preheat and interpass temperature for this procedure ? (該評定要求預熱溫 度和層間溫度為多少) a. 150?min.-205? max. b. 125?min.-400? max. c. 50?min.-230? max. 2 Visual inspection worksheet (spring 1991) (目視檢驗工作表) d. a and b above (a和b) e. b and c above (b和c) 10. For what thickness will this procedure be qualified if the required tests are passed successfully ? (若該評定順利通過，那麼這個評定可以覆蓋多大的板材厚度) a. 3/4〞to 3〞 b. 3〞maximum (最大3〞) c. unlimited (任意板厚) d. 3/4〞to 1-1/2〞 e. none of the above (以上答案都不對) 11. Refer to Appendix VII, paragraph (9). “Acceptance criteria for ASTM A514 and A517 steels shall be based on visual inspection performed not less than 48 hours after completion of the weld.” The most probable reason for requiring a 48 hour delay in inspection is：(參考附錄七，第九段“對於ASTM A514和A517鋼應在焊接完成48小時後進行目視檢驗，以確定是否 可以接受”。為什麼要求焊接48小時後才能檢驗？) a. Provide adequate time for welding personnel to leave the area (為焊接人員提供充足的時 間離開現場) b. Permit repairs to be made before acceptance (允許在驗收前進行修補) c. Susceptibility of A514 and A517 materials to delayed hydrogen cracking (A514 和A517 鋼易產生延遲裂紋) d. Permit any weld porosity present at time of welding to clear up (允許焊接時產生的氣孔 消失) e. Weld surface slag is easier to remove after it has cooled (冷卻後容易去除焊接表面夾渣) 12. If the welder who performs this procedure qualification test is also qualified, in what positions is he qualified for production welding ? (如果焊工做該工藝評定的同時經過認可，他可以焊 接哪些位置？) a. Horizontal groove and fillet welds in plate (板材的橫焊位置，接頭為坡口焊縫或角焊縫) b. Flat and horizontal groove and fillet welds in plate (板材的平焊或橫焊位置，接頭為坡口 焊縫或角焊縫) c. Overhead groove and fillet welds in plate (板材的仰焊位置，接頭為坡口焊縫或角焊縫) d. Flat groove welds only (只可以焊接平焊位置的坡口焊縫) 13. What is the F-number of the filler metal being used ? (所用的填充金屬組別號是？) a. 1 b. 3 c. 6 3 Visual inspection worksheet (spring 1991) (目視檢驗工作表) d. 5 e. none of the above (以上答案都不對) 14. What test specimens are required for this qualification test ? (該工藝評定需要作哪幾個試 樣？) a. 2 tensiles, 2 root bends, 2 face bends (2個拉伸，2個背彎，2個面彎) b. 2 tensiles, 4 side bends (2個拉伸，4個側彎) c. 2 tensiles, 2 macroetch specimens, 4 side bends (2個拉伸，2個宏觀侵蝕，4個側彎) d. 2 tensiles, 2 macroetch specimens, 2 root bends 2 face bends(2個拉伸，2個宏觀侵蝕，2 個背彎，2個面彎) e. none of the above (以上答案都不對) 15. During the evaluation of guided bend test specimen , a 5/16〞corner crack is observed. There is no evidence of slag inclusion or other fusion type discontinuities. The specimen is (在鑒定一個導向彎曲試樣的時候，在試樣邊上發現一條5/16〞長的裂紋。未發現夾渣和其他未熔合不 連續。那麼該試樣：) a. Acceptable (可以接收) b. Rejectable because the crack is greater than 1/4〞(拒收，因為裂紋大於1/4〞) c. Rejectable because the crack is greater than 1/8〞(拒收，因為裂紋大於1/8〞) d. Disregarded and a replacement specimen taken from the original weldment (重新在原焊件 上取樣) e. Disregarded and a replacement specimen taken form a different weldment (在另外的焊件 上取樣) 16. Where would the information for Question #3 appear on the form in Appendix I ? (問題#3的內容出現在附錄I中的？) a. Space #5 (空格#5) b. Space #6 (空格#6) c. Space #7 (空格#7) d. No prescribed space for this information (沒有指定的空格) e. This information is not applicable for procedure qualification (該內容對工藝評定不適用) Sample T-Joint Side “A”(Big T) 17. What is the weld size of fillet weld, Side A ? (角焊縫的A側焊角尺寸是多少？) a. 5/16〞 b. 3/8〞 c. 17/32〞 d. 3/16〞 4 Visual inspection worksheet (spring 1991) (目視檢驗工作表) 18. The discontinuity illustrated from 0 to A1 is (從0到A1指的哪種不連續？) a. Arc strike (電弧灼傷) b. Linear porosity (線性非連續) c. Cluster porosity (密集氣孔) d. Spatter on weld face (焊縫表面的飛濺) Porosity Sample T-Joint Side “A”(Little T) (T型接頭的氣孔試樣，A面) 19. The porosity in A3 measures (A3中的氣孔尺寸為) a. 86.97mm b. 0.313 in c. 0.549 in d. none of these (以上答案都不對) 20. The porosity in A3 is (A3中的氣孔是) a. Acceptable (可以接收) b. Unacceptable (不可以接收) The following information applies for Questions #21 through #26 (請閱讀以下的資訊，回答問題21-26) A welder is being qualified on a groove weld in the horizontal position on 8〞schedule 80 using the SMAW process. The material being joined is API 5L grade X42 to API 5L grade X52. (某焊工有資格焊接8〞，sch80的管子，接頭為坡口焊接，位置為橫焊，焊接方法是手工電弧 焊。母材是API 5L中的X42和X52) 21. For what thickness is this qualification valid ? (該焊工有資格焊接的厚度範圍是) a. 5/16〞-3/4〞 b. 3/4〞min-unlimited (3/4〞以上) c. 0.187〞min.-unlimited (0.187〞以上) d. all of the above (以上答案都對) e. none of the above (以上答案都不對) 22. What is a recommended filler metal for this weld ? (該焊接應採用什麼填充金屬) a. E6010 b. E7010 c. E7018 d. a or b above (a和b) e. b or c above (b和c) 23. For what range of diameters is this qualification valid ? (外徑多大的管子適用於該評定？) a. 3/4〞through 4〞(3/4〞到4〞) 5 Visual inspection worksheet (spring 1991) (目視檢驗工作表) b. 4〞or smaller (小於或等於4〞) c. 4〞or larger (大於或等於4〞) d. all diameters (所有直徑的管子) e. test diameter and above (等於或大於評定用的管子直徑) 24. What test specimens are required ? (該評定需做哪些試樣？) a. 2 face bends, 2 root bends (兩個面彎試樣，兩個背彎試樣) b. 1 face bend, 1 root bend (一個面彎試樣，一個背彎試樣) c. 2 face bends, 2 root bends, 2 reduced section tensiles (兩個面彎試樣，兩個背彎試樣，兩 個縮截面拉伸試樣) d. 4 side bends (四個側彎試樣) e. none of the above (以上答案都不對) 25. What is the required preheat and interpass temperature for welding this joint ? (焊接本接頭要 求預熱和層間溫度是多少？) a. None (沒有要求) b. None, as long as the base metal is above 32? (只要母材高於華氏32度，沒有要求) c. 50? minimum (至少華氏50度) d. 150? minimum (至少華氏150度) e. none of the above (以上答案都不對) 26. What F-number(s) apply to the proper filler metal for this weld ? (哪個組別的填充金屬可用 於這個焊接？) a. 1&6 b. 2&6 c. 6&21 d. 4 only e. none of the above (以上答案都不對) Tensile Specimens (拉伸試樣) Measure each of the tensile specimens and supply the following information. (測量每個拉伸試樣將答案寫到下面) Load=12,500pounds applied to each specimen. (每個拉伸試樣承受載荷12,500磅) Formula Tensile Strength = Load divided by the Area (拉伸強度=載荷/載面積) 27. White Sample (白色試樣)-reduced section (縮截斷面) Width (寬度) _______ in (英寸) _______ mm (毫米) Thickness (厚度) _______ in (英寸) _______ mm (毫米) Area (面積) _______ in.sq. (平方英寸) 6 Visual inspection worksheet (spring 1991) (目視檢驗工作表) 28. Amber Samper (琥珀色試樣) Width (寬度) _______ in (英寸) _______ mm (毫米) Thickness (厚度) _______ in (英寸) _______ mm (毫米) Area (面積) _______ in.sq. (平方英寸) Amber sample tensile strength ____________ psi. (琥珀色試樣拉伸強度為多少磅/平方英寸) 29. Gray Sample (灰色試樣) Width (寬度) _______ in (英寸) _______ mm (毫米) Thickness (厚度) _______ in (英寸) _______ mm (毫米) Area (面積) _______ in.sq. (平方英寸) Gray sample tensile strength ____________ psi. (灰色試樣拉伸強度為多少磅/平方英寸) 30. If the welder starts at the bottom of the pipe and welds upward, where would that information appear on the form in Appendix II ? (如果焊工從管部開始向上焊接，應在附錄II中何處出現 該資訊？) a. Space #3 (#3空格) b. Space #7 (#7空格) c. Space #12 (#12空格) d. Space #16 (#16空格) e. None of the above (以上答案都不對) Porosity Sample T-Joint Side B (Little T) (氣孔試樣T型接頭B側) 31. In region B2, is the porosity acceptable ? (在B2區，氣孔可以接收嗎？) a. Yes (可以) b. NO (不可以) c. no acceptance criteria provided (沒有提供接收的標準) d. not enough information provided (沒有提供足夠的資訊) 32. The total porosity in the region B3 measures (B3區所有的氣孔測量結果為：) a. 0.438 in (0.438英寸) b. 0.157 in (0.157英寸) c. 9.87 mm (9.87毫米) d. both b & c (b和c都對) 33. What is the heat input in J/in for a weld made with the GMAW process using 26 volts, 260 amps and 6 in/min travel speed ? (使用氣體保護焊，電壓26伏，電流260安培，行走速度為6英 寸/分鐘時的輸入線能量是多少焦耳/英寸) Joules per inch=Volts × Amps × 60/Travel speed (焦耳/英寸=電壓X電流X60/行走速度) Fillet Weld Sample A (角焊縫試樣A) 34. What is the most severe discontinuity present at the lower weld toe on sample A (Side 1) ? (在 試樣A的1側下焊趾上出現的最嚴重的不連續為？) 7 Visual inspection worksheet (spring 1991) (目視檢驗工作表) a. Toe crack (焊趾裂紋) b. Undercut (咬邊) c. Underfill (未焊滿) d. Excessive convexity (焊縫凸起) e. Overlap (焊瘤) 35. What is the weld size of side #3 ? (#3側的焊角尺寸是多少) a. 3/16〞 b. 1/4〞 c. 5/16〞 d. 3/8〞 e. none of the above (以上答案都不對) 36. Is the undercut on side #4 acceptable if the weld axis is perpendicular to the applied stress ? (如 果應力與焊縫軸線垂直，#4側咬邊可以接嗎？) a. Yes (可以) b. No (不可以) c. No acceptance criteria provided (沒有接受標準) d. No enough information provided (沒有提供足夠的資訊) To determine a metals ductility, calculations can be made based on the determination of percent elongation and percent reduction of area. (為了確定金屬的延展率，可以根據延長率和斷面收縮 率的結果來計算) Questions 37 and 38 can be answered using the following information： (37和38題可以參考以下數據) 2Original length 1.75 in (原長度1.75英寸) original area 0.3in (原面積0.3平方英寸) Final length 2.5 in (最終長度2.5英寸) final area 0.1 in2 (最終面積0.1平方英寸) 37. Calculate the percent elongation (計算延伸率) , Final length minus original length. Total divided by original length, times 100 = _______ % (最終長度減去原長度，再除以原長度，乘以100%等於________ %) 38. Calculate the percent reduction of area (計算縮截面積的百分比) , Original area minus final area. Total divided by original area, times 100 _______ % (原面 積減去最終面積，再除以原面積，乘以100%等於________ %) Guided Bend Samples (導向彎曲試樣) 39. Sample A&B are _____ bends. (A和B是什麼形式的彎曲試樣？) a. Side (側彎) b. Tensile (拉伸) c. Root (背彎) 8 Visual inspection worksheet (spring 1991) (目視檢驗工作表) d. Face (面彎) 40. Based on “Examination Book of Specification”, does the guided bends pass or fail as a group ? (根據“檢驗技術要求”，該組導向彎曲通過還是失敗？) a. Pass (通過) b. Fail (失敗) 41. What is the minimum yield strength of 1 inch thick ASTM A514 weld metal, using E-11018 as the filler metal ? (當使用E-11018做填充金屬時，1英寸的母材ASTM A514的最小屈服強 度是多少？) a. 110 Ksi b. 180 Ksi c. 97 Ksi d. 100 Ksi Fillet Weld Sample B (角焊縫試樣B) 42. Is the weld on side #2 acceptable is the drawing requires a 1/2〞fillet weld ? (圖紙要求角焊縫 尺寸為1/2〞，#2側的焊縫是否可以接受？) a. Yes (可以) b. No (不可以) c. No acceptance criteria provided (缺乏接受標準) d. Not enough information provided (缺乏充分的資訊) 43. What is the most rejectable discontinuity found on side #3 ? (在#3側最大的不可以接受的不 連續是什麼？) a. Overlap (焊瘤) b. Undercut (咬邊) c. Arc strike (電弧灼傷) d. Transverse crack (橫裂紋) 44. Based on information in Appendix VII, is the weld on side #1 acceptable ? (根據附錄七，#1側 的焊縫可不可以接受？) a. Yes (可以) b. No (不可以) c. None of the above (非上述答案) 45. A welder performed a qualification test on a groove weld on 3/8 inch thick material. What thick ness material, on groove welds, is the welder not qualified to weld ? (某焊工持有的焊工 証為坡口焊縫，厚度為3/8英寸，那麼焊工不能焊接的厚度是？) 9 Visual inspection worksheet (spring 1991) (目視檢驗工作表) a. 0.25 (0.25英寸) b. 0.50 (0.50英寸) c. 1.25 (1.25英寸) d. all of the above (所有以上厚度) 46. 36,379 kPa equals how many psi ? (36,379 kPa等於多少psi？) __________ psi 10 AWS D1.1 Code Clinic Exercise Questions 1