The cylinder blank is generally prepared by the reverse extrusion process. Due to the limitation of the process, the wall thickness is generally relatively thick, usually about 18-24mm, while the gas cylinder requires a wall thickness of about 5-7mm, and the general thickness of the bottle mouth closing part needs to be 10- 12mm, so a strong spin is required for thicker blanks.
Step1: Tube strong spinning
1. The inner and outer surfaces of the strong coil blank should be smooth, and no defects such as cracks, corrosion, inclusions, peeling, bubbles, abrasions, bumps, scratches, folds, straights, pits, etc. are allowed.
2. Internal surface quality requirements: roughness Ra2.0, the surface has no defects such as cracks, pits, heavy skin, bumps, scratches, etc., and the grinding lines on the inner wall are consistent (circumferential).
3. The straightness of the strong coil is not more than 0.15%.
Step2: Tube closing
Tube strong spinning
Three-wheel CNC spinning machine
Diameter of spinning machine
Length of spinning machine
Room temperature, special coolant
Special CNC closing and spinning machine
Maximum closing diameter
single cylinder time
Loading and unloading method
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