Question bank source: Safety production mock test, one-stop public account applet
The 2024 Welder (Intermediate) Certificate Exam Question Bank and Welder (Intermediate) Exam Question Analysis is a one-point combination of the safety production simulation exam (Safety Supervision Bureau) Special Operations Personnel Operation Certificate Examination Syllabus and (Quality Inspection Bureau) Special Equipment Operator Certificate Examination Syllabus (Quality Inspection Bureau) Online Mock Exam Questions for Welders (Intermediate) randomly selected. It includes the analysis of the answers to the question bank of the welder (intermediate) certificate review exam and the answer analysis of the question bank of the welder (intermediate) certificate new training exam. The 2024 Welder (Intermediate) Certificate Exam Question Bank and the Analysis of Welder (Intermediate) Exam Questions are in line with the new syllabus of the exam. Pre-exam training ensures that students can pass the exam smoothly after studying.
1. [Multiple Choice] ( ), Reducing the stress level can prevent the generation of thermal cracks. （ C ）
A. Increase steel impurities
B. Increase the S and P content in the welding consumables
C. Reduce the content of eutectic with low melting point
D. Increase the content of eutectic with low melting point
2. [Multiple choice question] ( ) is not the characteristic of submerged arc welding using flux copper backing plate welding. （ C ）
A. The flux plays the role of flux pad, and at the same time protects the copper pad from the direct action of the arc
B. Spread flux in the trench
C. The specimen is easy to displace
D. Copper backing plate with groove
3. [Multiple choice] ( ) is the wrong option for submerged arc welding classification. （ D ）
A. Manual submerged arc welding is a kind of submerged arc welding
B. Submerged arc welding is divided into two types: automatic submerged arc welding and manual submerged arc welding
C. Submerged arc automatic welding is a kind of submerged arc welding
D. Submerged arc welding is automatic welding
4. [Multiple choice] ( ) is an aluminum alloy welding wire. （ C ）
A、RZC-1
B、HSCu
C、SAlMg-1
D、H08Mn2SiA
5. [Multiple choice question] When using CO₂ cylinders, they must be placed, and knocking, collision, etc. are strictly prohibited. （ B ）
A、平
B, Upright
C. Handstand
D. Tilt
6. [Multiple choice] The appearance of the CO₂ cylinder is aluminum-white, and it is marked with the words "liquid carbon dioxide". （ B ）
A. Silver-gray
B. Black
C. Sky blue
D. Dark green
7. [Multiple Choice] MIG welding adopts a special form between ( ) and jet transition, which is called sub-jet transition. （ C ）
A. Droplet transition
B. Sub-droplet transition
C. Short-circuit transition
D. Excessive unsaturated jet
8. [Multiple choice question] Among the following welding wires, ( ) is copper wire. （ D ）
A、HSCuZn－1
B、HSCuZnNi
C、HSCuSn
D、HSCu
9. [Multiple choice question] Among the following welding defects that are not internal defects, they are ( ). （ A ）
A. Undercut
B. Slag inclusion
C. Not fused
D. Not welded through
10. [Multiple choice question] The following statement is incorrect ( ). （ A ）
A. When moving the welding machine, in order to save time, the power supply can not be cut off
B. When the electrical part of the submerged arc welding machine fails, the welder should immediately cut off the power supply and notify the electrician to repair it in time
C. After stopping welding, when the operator leaves the post, the power switch should be cut off
D. When carrying out welding operations, welders should wear insulated work shoes to prevent electric shock
11. [Multiple choice question] The following statement is correct: ( ). （ C ）
A. The appearance quality of the weld largely reflects the welder's implementation of the process specification
B. The appearance quality of the weld reflects the professional ethics of the welder to a large extent
C. The appearance quality of the weld largely reflects the level of welder's operating skills
D. The appearance quality of the weld largely reflects the theoretical level of the welder
12. [Multiple choice] The Contract Law of the People's Republic of China was promulgated in ( ). （ D ）
A、1994
B、1996
C、1998
D、1999
13. [Multiple choice question] The following ( ) does not belong to the MIG/MAG continuous wire feeder. （ D ）
A. Single driving wheel wire feeding machine
B. Driving wheel wire feeding machine
C. Planetary hyperbolic wire feeder
D. Pulsating wheel wire feeder
14. [Multiple Choice] The following statement about "frugality", what you think is incorrect is ( ). （ D ）
A. Frugality is necessary to maintain human survival
B. Thrift is the foundation of housekeeping
C. Thrift is the magic weapon of a stable country
D. Thrift is not conducive to stimulating domestic demand
15. [Multiple choice question] The following statement about being conscientious and responsible for work is incorrect ( ). （ C ）
A. Pay attention to interlayer cleaning during the welding process
B. After the welding work is completed, turn off the power supply of the welding machine in time
C. The electrode head is discarded at will during welding
D. The work is not only required to be large in quantity, but also in good quality
16. [Multiple choice question] An important basis for the survival of enterprises in the market economy is ( ). （ D ）
A. Quality
B. Services
C. Price
D. Credibility
17. [Multiple Choice] The wrong description of narrow gap submerged arc welding is ( ). （ C ）
A. The significant feature of the narrow gap submerged arc welding process is split welding
B. When narrow gap submerged arc welding, each layer of weld is divided into 1~3 welds from the second layer
C. The depth of the welding groove is the main influencing factor to determine the welding parameters of the lane separation
D. In narrow gap submerged arc welding, welding current, voltage, and welding speed are still important welding parameters
18. [Multiple choice question] The weld without cracks, weld penetration, non-fusion and strip slag inclusion is ( ). （ A ）
Class A and I welds
Class B, II welds
C, III. welds
D, IV grade welds
19. [Multiple choice] The temperature of cold cracks is in ( ). （ D ）
A, 900°C left and right
B, 600°C left and right
C, about 400°C
D. Below 200°C
20. [Multiple Choice] The existence form of an iron-carbon alloy with a carbon content of 0.8% at 1000 °C is ( ). （ C ）
A. Lyseriella
B. Pearlite
C. Austenite
D. Martensite
21. [Multiple Choice] The characteristics of the jet transition are wrong ( ). （ A ）
A. When CO₂ gas is protected, injection transition can also occur
B. It belongs to free transition
C、熔滴最大直径小于焊丝直径
D. The power supply is generated when the polarity is reversed to DC
22. [Multiple choice question] The drawing that uses a single thick solid line to represent pipes and fittings in the drawing is called ( ). （ B ）
A. Double-line diagram
B. One-line diagram
C. Multi-line diagram
D. Contour drawing
23. [Multiple choice question] During the welding process, the cracks generated when the weld and the metal in the heat-affected zone are cooled to the high-temperature zone near the solidus belong to ( ). （ A ）
A. Cold cracks
B. Thermal cracking
C. Reheat cracking
D. Delayed cracking
24. [Multiple choice question] Command and control activities in terms of quality usually include the formulation of quality policies and quality objectives, as well as ( ), quality control, quality assurance and quality improvement. （ B ）
A. Quality evaluation
B. Quality planning
C. Quality inspection
D. Quality realization
25. [Multiple choice question] Command and control activities in terms of quality usually include the formulation of quality policies and quality objectives, as well as quality planning, quality control, quality assurance and ( ). （ B ）
A. Quality evaluation
B. Quality improvement
C. Quality inspection
D. Quality realization
26. [Multiple choice] The arc protection method of submerged arc welding is ( ). （ C ）
A. The arc of submerged arc welding is buried under the granular flux
B. Welding slag protection
C. Arc protection mode of gas-slag joint protection
D. Submerged arc welding is gas shielded welding
27. [Multiple Choice] The basic groove shape is simple, ( ), and it is widely used. （ A ）
A. Easy processing
B. Complex processing
C. It is not easy to process
D. It can be processed
28. [Multiple choice question] The specific requirements of civilized production do not include ( ). （ D ）
A. Skilled in technology
B. Learn from each other
C. Strict discipline
D. Be able to speak well
29. [Multiple choice question] The distance between flammable materials and tungsten argon arc welding site shall not be less than ( ) m. （ B ）
A、3
B、5
C、13
D、15
30. [Multiple choice question] The following statement about the issuance of welding rods is incorrect ( ). （ A ）
A. When the remaining welding rods need to be returned to the warehouse, they only need to be handed over to the warehouse
B. When the electrode is returned to the warehouse, it can only be withdrawn after confirming the model and specification of the electrode
C. The issuance procedures of welding rods should be strictly implemented, and they must be issued according to the model, specification and quantity specified in the product process
D. The steel should be issued in strict accordance with the material specifications and quantities proposed in the production plan
31. [Multiple choice question] According to the standard of GB/T10249-1988 "Method for Compiling Electric Welding Machine Models", WSE-315 represents ( ) AC and DC manual tungsten argon arc welding machine with a welding current of 315A. （ A ）
A. Nominated
B. Max
C. Minimum
D. General
32. [Multiple Choice] When tungsten argon arc welding of horizontal pipe butt joint, the gap of the joint ( ). （ A ）
A. When the blunt edge is large, it can be correspondingly larger
B. In the case of ensuring welding penetration, try to make it larger
C. When the blunt edge is large, it can be correspondingly smaller
D. In general, try to make it bigger
33. [Multiple Choice] Law and morality are both people's ( ). （ C ）
A. Personal life guidelines
B. Personal Code of Conduct
C. Norms of social behavior
D. Self-restraint
34. [Multiple choice question] The popular quality management methods include ( ), six sigma and QC seven methods. （ D ）
A. Overall quality management
B. Progressive quality management
C. Segmented quality management
D. Total quality management
35. [Multiple choice question] When the flame correction method corrects the welding deformation, the minimum heating temperature shall not be lower than ( ). （ A ）
A、300°C
B、200°C
C、400°C
D、350℃
36. [Multiple choice question] Heat-curing flux, heat-shrinkable film, and glass fiber cloth ( ) are not composed of submerged arc welding heat-curing flux liner method. （ B ）
A. Water-cooled slider type-copper pad method
B. Heat-curing flux liner method
C. Flux copper backing plate
D. Copper backing plate
37、【单选题】焊剂F308L-H00Cr21Ni10中“308”表示( )。 （ A ）
A. Code of deposited metal type
B. Flux grade number
C. The minimum tensile strength of deposited metal
D. Heat treatment status of the specimen
38. [Multiple choice] Before welding, ( ) cannot prevent the formation of pores. （ D ）
A. Choose low-hydrogen electrode
B. Clean the oil stain on the surface of the welding wire
C. Grinding of the groove of the specimen
D. Welding rod insulation at 100°C
39. [Multiple choice question] Welding practitioners should ( ), unite and cooperate, and take the initiative to cooperate with the work. （ A ）
A. Be modest and cautious
B. Independent learning
C. Pay attention to quality
D. Dedication to duty
40. [Multiple choice question] The width of the vehicle passage in the welding work area shall not be less than ( ), and the pedestrian passage shall not be less than 1.5m. （ B ）
A、1m
B、3m
C、2m
D、4m
41. [Multiple Choice] The greater the rigidity of the welded structure, the greater the thickness of the plate, and the welding deformation caused by it ( ). （ B ）
A. The bigger
B. The smaller
C. No change
D. Unsure
42. [Multiple choice question] The chemical harmful factors generated in the welding process include welding fumes and ( ). （ D ）
A. Welding arc light
B. Thermal radiation
C. Radiation
D. Harmful gases
43. [Multiple choice question] The ( ) coated with coating used in electrode arc welding is called electrode. （ B ）
A. Electrode
B. Melt the electrode
C. Conductive rod
D. Conductor
44. [Multiple choice question] Electrode arc welding is jointly protected by slag and ( ). （ C ）
A. Vacuum
B. Inert gas
C. Gas
D. Medicinal coating
45. [Multiple choice question] The basic symbol "V" of the weld is to indicate ( ) the weld. （ C ）
Type A, X
B, Y-type
C, V-type
D, ⊿ type
46. [Multiple choice question] When welding the CO₂ gas shielded welding of the melting electrode, the 6mm carbon steel sheet transverse butt joint is welded, the ¢1.2mm solid core welding wire is selected, and the welding voltage selection range is generally in ( ). （ C ）
A、21～23V
B、15~17V
C、17~~19V
D、19～21V
47. [Multiple choice question] Melting electrode MAG welding (80%Ar + 20% CO2), carbon steel plate transverse butt joint, V-groove, filling and cover layer welding, use ¢1.2mm flux-cored wire, welding electricity, safety production simulation test is clear, and the flow selection range is generally in ( ). （ D ）
A、100~140A
B、140~180A
C、180～220A
D、220~260A
48. [Multiple choice question] The characteristics of the short-circuit transition of MIG/MAG welding droplets are ( ). （ B ）
A. It is suitable for full-position welding of large and thick plates
B. The transition process depends on the self-weight of the molten droplet, the surface tension and the electromagnetic force
C. The arc is a continuous combustion process
D. It is generated under a wide range of welding current and voltage
49. [Multiple Choice] The equipment for MIG/MAG welding should not ( ). （ A ）
A. Detachment from the use requirements
B. Consider versatility
C. Consider the issue of standardization
D. There are suitable power output range, static characteristics, dynamic characteristics and wire feeder characteristics
50. [Multiple Choice] The wire feeding method of the MIG/MAG continuous wire feeder is ( ). （ A ）
A. Push wire
B. Drawing
C. Push and draw wire
D. Traction wire
51. [Multiple choice question] The concept of gas arc welding of flux-cored wire is misunderstood. （ D ）
A. Solid-core welding wire is used as the melting electrode
B. Gas as arc medium
C. Gas shielded metal droplets, welding pools and high-temperature metals in the welding area
D. Flux-cored wire can not be arced
52. [Multiple choice question] The basic method of melting welding is determined according to ( ). （ A ）
A. Heat source form
B, how to operate
C. Materials
D. Welding equipment
53. [Multiple Choice] The meaning expressed by the molecular formula of a substance does not include the following ( ). （ D ）
A. Indicates a substance
B. A molecule that represents a modified substance
C. Indicates the various elements that make up the substance
D. Indicates the relative atomic mass of the substance
54. [Multiple choice question] The characteristics of DC positive tungsten argon arc welding are ( ). （ D ）
A. The workpiece has low calorific value, shallow penetration depth and low productivity
B. The workpiece has large calorific value, large penetration depth and high productivity
C. Tungsten has strong thermal electron emission ability, and the arc is stable and concentrated
D. Tungsten electron emission ability is weak, and the arc is unstable and unconcentrated
55. [Multiple Choice] The oversaturation of carbon in α-iron. Safe production mock test one-point pass. and solid solutions are called ( ). （ D ）
A. Austenite
B. Pearlite
C. Lyrysella
D. Martensite
56. [Multiple choice] The basic shape of shaft parts is ( ). （ A ）
A. Coaxial rotary body
B. Heteroaxial rotary body
C. Concentric rotary body
D. Contour rotary body
57. [Multiple Choice] The reduction reaction is the reaction in which ( ) in oxygenated compounds is taken away. （ C ）
A、碳
B. Hydrogen
C. Oxygen
D. Nitrogen
58. [Multiple choice question] The wire feeding head, ( ), walking trolley, contact tip and flux recycler are the components of the mechanical structure of the submerged arc automatic welding machine. （ D ）
A. Console
B. Power supply
C. Control system
D. Nose adjustment mechanism
59. [Multiple Choice] The inverter arc welding machine is mainly composed of three-phase full-wave rectifier, inverter, ( ), low-voltage rectifier and reactor. （ A ）
A. Step-down transformer
B. Saturation reactor
C. Step-up transformer
D. Generator excitation pole
60. [Multiple Choice] The phenomenon of a metal changing from one lattice to another with ( ) in the solid state is called allotrope transition. （ B ）
A. Pressure
B. Temperature
C. Pressure
D. Time
61. [Multiple choice question] brazing is the use of some metal materials whose melting point is lower than the melting point of the base metal as brazing metal, heating the weldment and brazing metal to a temperature higher than the melting point of the brazing metal, but lower than the melting point of the base metal, and using the liquid brazing material to wet the base metal, fill the joint gap and connect with the base metal ( ). （ B ）
A. Interconnected
B. Mutual diffusion
C. Melting
D. Contact
62. [Multiple choice question] The inert gas argon used in tungsten argon arc welding has the characteristics of ( ). （ A ）
A. Argon has almost no chemical reaction with any metal
B. The purity of argon is the same when different metals are welded
C. Argon has a good protective effect, but the arc stabilization characteristics are poor
D. Argon is soluble in most metals
63. [Multiple choice question] The description of argon, the inert gas used in tungsten argon arc welding, is correct ( ). （ B ）
A. Argon has a good protective effect, but the arc stabilization characteristics are poor
B. Different metals have different requirements for argon purity when welding
C. Argon is soluble in most metals
D. Argon has a chemical reaction with almost any metal
64. [Multiple Choice] When tungsten argon arc welding, ( ) is a harmful element in the metal of steel weld. （ A ）
A、S、P
B、Cr、Mo
C、Mn
D、Si、MN
65. [Multiple Choice] When tungsten argon arc welding, the wire can be fed continuously or intermittently, but (, latest analysis, ). （ C ）
A. When intermittently feeding wire, the end of the welding wire must be removed from the gas protection zone
B. The end of the welding wire must be removed from the gas protection zone
C. The end of the welding wire must be in the gas protection zone
D. The end of the welding wire must be removed from the gas protection zone when the wire is fed continuously
66. [Multiple choice question] The correct method of cleaning tungsten argon arc welding wire is ( ). （ C ）
A. Remove the oxide film by chemical methods
B. Mechanically clean the oxide film of the welding wire
C. Scrub oil and dust with organic solvents
D. Polishing with a grinding wheel
67. [Multiple choice question] When the current of tungsten argon arc welding is constant, the welding speed determines ( ). （ C ）
A. Preheating temperature
B. Cooling rate after welding
C. Heat input per unit length of weld
D. The quality of the weld
68. [Multiple Choice] When tungsten argon arc welding DC reverse connection, the arc energy ( ), the heating area is large, the arc combustion ( ), the penetration depth is shallow and wide, and the productivity ( ), so it is generally not recommended. （ A ）
A. Low instability due to non-concentration
B. High concentration and stability
C. Unconcentrated instability is high
D. High concentration instability
69. [Multiple Choice] Penetration depth of tungsten argon arc welding DC positive connection method ( ). （ A ）
A. Deep and narrow
B. Shallow and narrow
C. Shallow and wide
D. Deep, wide
70. [Multiple choice question] To prevent slag inclusion, ( ) welding consumables should be used. （ A ）
A. Welding rod and flux with good slag removal
B. Welding rod with high strength
C. Welding rod and flux that are insulated before welding
D. Welding rods and fluxes with poor deoxidation and desulfurization performance
71. [True or False] E308-15 stainless steel electrode is suitable for flat welding and horizontal welding, and adopts AC or DC reverse connection. （ × ）
72. [True or False] MIG welding adopts a special form between short-circuit transition and droplet transition, which is called sub-jet transition. （ × ）
73. [True or False] When the three-roller plate bending machine is rounded, at least the length of the two ends of the steel plate is L/2 and the straight section cannot be rounded, and the end pre-bending measures must be taken in advance. （ √ ）
74. [True or False] The traditional virtues of the Chinese nation refer to the excellent moral heritage that has been handed down from China's 5,000-year history, has influence, can be inherited, and has been continuously innovated and developed, and is beneficial to future generations. （ √ ）
75. [True or False] AC sine wave arc welding transformer is composed of a transformer, a safety production simulation test, a one-point pass, an adjustment device and an indication device. （ √ ）
76. [True or False] If the AC ammeter is to expand the range, it should be equipped with a shunt. （ × ）
77. [True or False] Direction control circuits include: voltage regulation circuit, pressurization circuit, unloading circuit, etc. （ × ）
78. [True or False] Low-alloy corrosion-resistant steel is mainly used for various mechanical equipment and structures working in corrosive media such as atmosphere, seawater and petrochemical industry. （ √ ）
79. [True or False] Reheat cracks generally occur in the heat-affected zone of high-strength low-alloy steels containing elements such as nickel, tungsten or vanadium. （ × ）
80. [True or False] Innovation is a huge driving force for the sustainable and healthy development of enterprises and institutions. （ √ ）
81. [True or False] Mechanical properties refer to the properties of metals when they are subjected to external forces. （ √ ）
82. [True or False] Labor law is an important and independent legal department in the entire legal system. （ √ ）
83. [True or False] The drawings of the same product can be in two drawing formats: without binding edge and with binding edge. （ × ）
84. [True or False] The diameter of the submerged arc automatic welding wire mainly affects the width of the weld. （ × ）
85. [True or False] The code of the hardfacing electrode model is EZ. （ × ）
86. [True or False] The bandwidth generally used for submerged arc welding with pole is 40mm. （ × ）
87. [True or False] The gas supply system of the argon arc welding machine is composed of a gas cylinder, a preheater, a dryer, a pressure reducer, a flowmeter, and a solenoid valve. （ × ）
88. [True or False] Welding wire can be divided into solid core welding wire and flux-cored welding wire. （ √ ）
89. [True or False] Welding workers only need to do a good job of welding, and do not need to pay attention to other work. （ × ）
90. [True or False] The width of the vehicle passage in the working area of the welding "Safety Production Mock Test" shall not be less than 3m, and the pedestrian passage shall not be less than 1.5m. （ √ ）
91. [True or False] When the DC voltmeter is used, the voltmeter is connected in series on the circuit under test, and the range of the voltmeter is determined by the voltage doubling resistance in series in the meter. （ × ）
92. [True or False] Hardness refers to the ability of a metal material to resist internal deformation. （ × ）
93. [True or False] Carbon steel contains only two elements: iron and carbon. （ × ）
94. [True or False] The negative pressure of the furnace mainly depends on the volume of air supply and induced air. （ √ ）
95. [True or False] Thrift is a virtue, but it is not conducive to stimulating economic growth. （ × ）
96. [True or False] The specification size in the assembly drawing is the size that illustrates the performance of the specification line of the machine (or component), and it is the main basis for designing the product. （ √ ）
97. [True or False] Annealing can improve the hardness of steel, improve plasticity, and make the material easy to process. （ × ）
98. [True or False] The wire feeding drive system is one of the components of the wire feeding mechanism of the submerged arc automatic welding machine. （ √ ）
99. [True or False] When tungsten argon arc welding is welded, the size of the tungsten electrode diameter does not need to consider the current polarity. （ × ）
100. [True or False] When tungsten argon arc welding pipe butt positioning welding, the more solder joints of positioning welding, the better. （ × ）
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