Basic Knowledge for Changzhou Machining

1: What are the main forms of metal structures?

Answer: There are frame structures, container structures, box structures, and general component structures.

2: How many parts can riveting operations be divided according to the nature of the process?

Answer: It is divided into material preparation, lofting, processing and molding, and assembly and connection.

3: What are the connection methods for metal structures?

Answer: There are riveting, welding, hybrid riveting and welding connections, and bolt connections.

In the mechanical manufacturing industry, riveters belong to the category of (hot working).

5: What is thermal processing?

Answer: All or partial heating processing and molding of metal materials.

6: What is the main body of the honing frame structure?

Answer: It is mainly made of profiles.

7: What is the main body of the container structure?

Answer: It is mainly made of plates.

8: The box structure and general structure are structures made of a mixture of (plate) and (profile) materials.

9: Material preparation refers to the preparation of (raw materials) and (blank parts).

10: Steel plates and profiles can cause deformation during transportation, lifting, and storage.

11: The deformation of steel can affect the normal operation of processes such as lifting, blanking, and gas cutting of parts.

12: If the deformation of the part during processing is not corrected, it will affect the structure (correct assembly)

3. The deformation caused by welding can reduce the accuracy of assembly, generate additional stress inside the steel structure, and affect the strength of components.

14. The deformation of flat steel includes (bending, twisting, and combined bending and torsion deformation).

15: What are the types of multi roller straightening machines that can be divided according to the arrangement of shaft rollers and the position of adjustment rollers?

Answer: It can be divided into upper and lower roller parallel straightening machines and upper and lower roller tilt straightening machines.

16: What are the heating methods for flame correction?

Answer: There are spot, linear, and triangular heating.

17: What factors determine the effectiveness of flame correction?

Answer: It depends on the heating position and temperature.

18: What are the methods of correction?

Answer: Mechanical correction, manual correction, flame correction, high frequency heat correction.

19: What is the process of making metal structures?

Answer: Setting out and marking off are the first steps in manufacturing metal structures.

20: What are the effects of lofting and marking on the product?

Answer: It will directly affect product quality, production cycle, and cost.