SQUARE BAR

Square bars can only be bent as one style (i.e. there is no strong axis or weak axis to bend against). BIT Series Profile Bending Machine can ability to bend all mill produces sizes of square and round bars.

Bars are most commonly used for smaller manufactured parts and for industrial applications.

Bars can be bent with virtually every bending process we have available with our section bending machine. For very tight radius bending you can utilize a draw bending process where you must be pull the material (draw the material) around a bend die matching the desired bend radius.

6 important factors affecting the square bar bending process

Several tips can help to ease bending square or rectangular material and reduce the amount of distortion in bent sections.

Wall Thickness

Bending round, square, or rectangular material involves stretching the outside diameter (OD) of the bend and compressing its ID. Consequently, a heavier wall thickness allows for a tighter bend radius and more material stretchability with less distortion.

Method of Bending

This is a key factor in controlling distortion. A correctly chosen procedure can help to produce consistent tolerances and accurate parts. Generally, smaller material requires rotary draw bending or compression bending, which can incorporate wiper dies and mandrels. Induction and increment bending should be used with larger material bent to a larger radius. Design distortion and material size are important factors for determining the bending method.

In many cases

There is no better factor than experience. Many trained bending artisans know what is required to produce an acceptable product.

Size of Material

Larger material bent to a smaller radius has a greater chance to distort than smaller material bent to a larger radius. Design and planning are necessary to help solve bending problems before they arise.

Tooling

After the parts have been designed, the method of bending has been chosen, and procedures to bend to proper tolerances are established, the machine must be set up with the proper tooling. Based on design conditions, tooling that can be used includes bend die, clamp block, follower block, mandrel, and wiper die. All or some of this tooling may be required.

Internal and External Lubricant

 Lubricants decrease the friction between tooling and material to be bent. When friction is reduced, material flows smoothly through the bending equipment, allowing the machinery to perform its designed operation efficiently.

What is bending solid material

Bars are most commonly used for smaller manufactured parts and for industrial applications.

Square bars can only be bent as one style (i.e. there is no strong axis or weak axis to bend against).

BIT profile bending machine ( hydraulic bar bending machine ) can ability to bend all mill produces sizes of square and round bars,including aluminum, stainless and carbon steel.

Selection table of BIT profile bending machine for bending square steel

Bars are formed by either a cold drawn process or a hot drawn process. The different processes result in different material properties which are defined by local mills that are producing bars. Hot rolled bars are typically designated as A36 with a yield point (PSI) of 36,000 minimum. Cold rolled bars are typically designated as 1018 with a yield point (PSI) of 54,000 minimum.

Hydraulic bar bending machine

	Specification (mm)	Minimum Inside Diameter (mm)
PBH-120	50 × 50	500
PBH-140	60 × 60	600
PBH-200	70 × 70	800
PBH-300	80 × 80	1500
PBH-360	110× 110	1600
PBH-450	130 × 130	2000
PBH-500	145 × 145	2500
PBH-550	165 × 165	3000
PBH-600	200 × 200	3500
PBH-700	240 × 240	4000

Application

Bent square bar for trummle screen rings, architectural features, artistic works among others. Often square bar is machined after bending as an affordable alternative to cutting shapes from plate.

square bar bending machine photos

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TYPES OF
PROFILE BENDING MACHINE

PBH SERIES

All PBH series section bending machines can bend copper, carbon steel, stainless steel, and aluminum profiles.
Angle, channel, beam, flat bar, round & square bar, pipe, square tube.

CNC SERIES

CNC aluminum profile bending machine.

Suitable for bending aluminum profiles for automobiles, doors, and windows

MS SERIES

A small section bender, with manual and semi-hydraulic drives, can bend profiles other than the beam.

PBT SERIES CNC PIPE BENDER

High-performance cold pipe bending machine, CNC control, multiple programs, multiple angle settings, simpler operation, and program settings.
It is widely used and can be used in mass-produced or standardized products, such as exhaust pipes, seats, bumpers, and all steel furniture.

Bending Process