U-shaped elbow
Thread Content
A company is working on an evaporation condenser that requires U-shaped elbows of Φ32×4. They tried to use the previous successful experience in bending elbows with a diameter of less than Φ25 for cold bending, but the resulting elicity was far above the acceptable limits. Experts, please offer some advice. Urgent urgent urgent
The molds are not correct, so it’s natural that there are serious problems with bending. Replace the mold
A Φ32×4 U-shaped elbow isn’t that large; with cold bending, as long as the mold is appropriate, there won’t be a problem of excessive ellipticity. Since you already have experience in cold bending Φ25 parts, you just need to create a new mold.
No, of course it’s a mold made anew for Φ32 pipes; it’s just that the bending radius is smaller, at R50. How could a mold designed for 25 be used?
The bending radius is small; if cold bending is required, the tube should be filled with sand or other fillers.
The tube is filled with yellow sand; of course, if the radius of curvature is very small, the likelihood of it exceeding the standards is also high
Filling it with sand is too troublesome; can it be filled with water instead? Just plug both ends of the tube with plugs. Those who have experience, please share some advice