answersLogoWhite

0

Bending is a process by which metal can be deformed by plastically deforming the material and changing its shape. The material is stressed beyond the yield strength but below the ultimate tensile strength. The surface area of the material does not change much. Bending usually refers to deformation about one axis.

Bending is a flexible process by which many different shapes can be produced. Standard die sets are used to produce a wide variety of shapes. The material is placed on the die, and positioned in place with stops and/or gages. It is held in place with hold-downs. The upper part of the press, the ram with the appropriately shaped punch descends and forms the v-shaped bend.

Bending is done using Press Brakes. Press Brakes normally have a capacity of 20 to 200 tons to accommodate stock from 1m to 4.5m (3 feet to 15 feet). Larger and smaller presses are used for specialized applications. Programmable back gages, and multiple die sets available currently can make for a very economical process.

Air Bending is done with the punch touching the workpiece and the workpiece, not bottoming in the lower cavity. This is called air bending. As the punch is released, the workpiece ends up with less bend than that on the punch (greater included angle). This is called spring-back. The amount of spring back depends on the material, thickness, grain and temper. The spring back usually ranges from 5 to 10 degrees. Usually the same angle is used in both the punch and the die to minimize setup time. The inner radius of the bend is the same as the radius on the punch.

Bottoming or Coining is the bending process where the punch and the workpiece bottom on the die. This makes for a controlled angle with very little spring back. The tonnage required on this type of press is more than in air bending. The inner radius of the workpiece should be a minimum of 1 material thickness in the case of bottoming; and upto 0.75 material thickness, in the case of coining.

User Avatar

Wiki User

12y ago

What else can I help you with?

Related Questions

Why can metal be bent without being broken?

On heating, metal softens and can be bent easily without breaking.


Metal can be bent without breaking. It is said to bee?

A metal that can be bent without breaking and will stay bent is said to be malleable. This is one of the main properties of metals.


What is the perfect tense of bend?

its bent


What can bend metal?

Metal can be bent by applying force through various methods, such as using a metal brake, hammering it into shape, or utilizing specialized machinery like a press brake. The type of metal, its thickness, and the technique used will determine how easily it can be bent.


An element that can be bent or stretched and is usually shiny is problem an?

metal


What is the purpose of the bent metal pull backs that I see so many of now?

The bent metal pullbacks are designed so that curtain hangs slightly lower then the bar showing it off.


Is aluminum can flexible?

yes.aluminum can be bent because it is thin and also it really has the characteristics to be bent because of its thin components.


What anchor should you use with a concrete block wall?

bent and tied metal rebar for the slab-to-wall connection at all filled cells bent metal straps embedded into the lintel to connect roof to wall


Gold is a malleable metal What does this mean?

It can be bent, reshaped, and hammered without breaking.


What word means that a metal can be bent or rolled into sheets?

This word is called malleability. _________


Is radium bendable?

No, radium is a hard and brittle metal that cannot be bent easily.


What elements usually have the ability to be stretched bent and conduct electricity?

The metal elements.