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1: What kinds of hammers are commonly used by riveters?
A: There are hand hammers, sledgehammers, and hammers.
2: What kinds of chisels are commonly used in riveting?
A: There are two types of flat chisel and narrow chisel.
3: What is high carbon steel?
A: Steel with a carbon content greater than 0.6% is called high carbon steel.
4: What is steel?
A: Iron-carbon alloys with a carbon content of less than 2.11% are called steel.
5: Can steel be divided into several types according to its end shape?
A: It can be divided into plates, pipes, profiles and wires.
6: Can steel be divided into several categories depending on the application?
A: It can be divided into structural steel, tool steel and special purpose steel.
7: What are the two basic methods for steel deformation correction?
A: There are cold correction and heat correction.
8: What is an assembly jig?
A: Refers to the process equipment used to apply external force to the part during the assembly process to obtain reliable positioning.
9: What are the basic methods of cold correction?
A: There are manual corrections and mechanical corrections.
10: What are the shapes of the local heating correction heating zone?
A: There are three kinds of shapes, lines, and triangles.
11: What kind of heating correction?
A: Total heating correction and local heating correction.
12: What kinds of angle steel deformation?
A: There are three kinds of distortion, bending and angular deformation.
13: What are the deformations of the channel steel?
A: There are distortions, bends, and local deformation of the wing.
14: What processes are included in the separation?
A: It includes three processes of blanking, punching and cutting.
15: What is cold correction?
A: The correction performed at room temperature is called cold correction.
16: What is stamping?
A: The process of separating or forming a sheet to obtain a part.
17: What are the advantages of stamping?
A: The product quality is good, the productivity is high, the material is saved, the cost is reduced, and the automation is easy.
18: What is bending forming?
A: A method of bending a blank into a desired shape.
19: What are the basic forms of riveting?
A: Docking, lapping, cornering.
20: What is riveting?
A: Use rivets to join two or more components together.
21: How many rivets are commonly used?
A: There are semi-circular heads, countersunk heads, semi-sunk heads, flat heads, flat cone heads, oblate, flat.
22: What kinds of riveting types are there?
Answer: There is strong riveting and solid riveting for close riveting.
23: What is assembly?
A: The individual parts are combined into a member's name according to certain technical conditions.
24: What are the three elements of assembly?
A: Positioning, support, clamping.
25: What are the connection methods for metal structures?
A: There are welding, riveting, bolting, and rivet welding.
26: What are the commonly used tools for anti-sample?
A: pink line, stone pen, needle, ruler, sample punch, hand hammer.
27: What are the main methods for finding the intersection line?
A: The well-defined line method, the auxiliary plane method, the spherical method.
28: What are the methods for finding the real length of a straight line segment?
A: Rotation method, right triangle method, face changing method, branch line method.
29: What are the methods for developing images?
A: There are mapping methods and calculation methods.
30: What are the common deployment methods?
A: There are parallel line method, radiation method, triangle method.
31: What parts can the material shear section be divided into?
A: Collapse, bright band, shear band, burr.
32: What kinds of corrections?
A: It is divided into manual correction, mechanical correction, and flame correction.
33: What is the benchmark?
A: The part line is used to determine the point line surface of other points, lines, and cotton positions.
34: What is plasticity?
Answer: The ability of metal materials to be permanently deformed without damage under external force.
35; What is resilience?
A: The ability of metal materials to not be damaged under impact loads.
36: What are the measures to prevent welding deformation?
A: Anti-deformation method, rigid fixing method, reasonable welding sequence.
37: What are the characteristics of spatial linear projection?
A: Authenticity, accumulation, contraction.
38: What is the intercept line?
A: The intersection line produced by the plane cutting of the shape.
39: What is the intersection line?
A: The surface intersection line produced by the intersection of two planes.
40: What are the views?
A: divided into basic view, partial view, oblique view, and rotated view.
41: What is the basic view?
A: The view from which the part is projected onto the basic projection surface.
42: What are the basic views?
A: Main view, top view, left view, right view, bottom view, rear view.
43: Which are the cross-sectional views?
Answer: It is divided into full section, half section and partial section.
44: What is the effect of cutting amount on drilling?
A: Reasonable choice of cutting amount can prevent premature wear or damage of the drill bit. Prevent machine tool overload and improve workpiece cutting accuracy and surface roughness.
45: What is tapping?
A: Use a tap to cut the internal thread on the hole wall.
46: What is the effect of the diameter of the bottom hole on the work wire?
Answer: If the diameter of the bottom hole is the same as the diameter of the internal thread, the tap will be caught when the material expands. At this time, the tap is easy to break. If it is too large, the height of the tapped thread will be insufficient to form a waste.
47: What is ferrule?
A: Cut the thread on the outer diameter of the round rod tube with a die.
48: What principles should I pay attention to when choosing a groove?
Answer: (1) Minimize the amount of weld metal filling, (2) ensure penetration and avoid cracking, (3) consider minimum welding deformation, and (4) facilitate processing.
49: What is the role of leaving the blunt edge when opening the groove?
A: Prevent the connector from burning through.
50: What are the methods for opening the groove?
Answer: It is processed by air shovel, mechanical processing, gas cutting groove, carbon arc gouging groove.
