A power bender may be provided. The power bender may comprise a cart, a bender mechanism, and a scissor mechanism. The cart may have a zero turn radius. The bender mechanism may be configured to bend conduit. The scissor mechanism may be disposed between the cart and the bender mechanism. The scissor mechanism may be configured adjust a working height of the bender mechanism above the cart. The bender mechanism may be configured to rotate about a pivot point.

A value stream process or method for forming vehicle rails from extruded aluminum tubes includes the steps of extruding an aluminum tube and hydroforming the extruded aluminum tube into a vehicle rail. More specifically, the method includes extruding the aluminum tube, bending the aluminum tube, preforming the aluminum tube, hydroforming the aluminum tube into a vehicle rail, trimming the vehicle rail to length and then artificially aging the rail followed by batch chemical pretreatment. In an alternative embodiment the artificial aging and batch chemical pretreatment processes are performed in reverse order. In either of the embodiments, localized induction annealing to recover formability may be performed between bending and preforming, between preforming and hydroforming or both.

A value stream process or method for forming vehicle rails from extruded aluminum tubes includes the steps of extruding an aluminum tube and hydroforming the extruded aluminum tube into a vehicle rail. More specifically, the method includes extruding the aluminum tube, bending the aluminum tube, preforming the aluminum tube, hydroforming the aluminum tube into a vehicle rail, trimming the vehicle rail to length and then artificially aging the rail followed by batch chemical pretreatment. In an alternative embodiment the artificial aging and batch chemical pretreatment processes are performed in reverse order. In either of the embodiments, localized induction annealing to recover formability may be performed between bending and preforming, between preforming and hydroforming or both.

Not only a reduction in the load resistant performance of a structural member in a vehicle body having a quenched portion with a tensile strength of 1,470 MPa or greater, but also a reduction in the shock absorbing performance associated with the HAZ softening by welding are suppressed. In a joining structure (10) for a member in a vehicle body in which a first member (11) that is made of steel, has a closed hollow cross-section having no outward flange, and is provided with a quenched portion having a tensile strength of 1,470 MPa or greater, a base material portion having a tensile strength of less than 700 MPa, and a transition portion (17) between the quenched portion (16) and the base material portion (18) in a longitudinal direction thereof, and a second member (12) that is made of steel and overlaps the first member (11) are welded to each other in an overlapping portion, the overlapping portion exists over the base material portion (18) from the quenched portion (16) of the first member (11) through the transition portion (17), and a welding portion (13) formed by welding exists in the transition portion (17) or the base material portion (18) in the first member (11).

Not only a reduction in the load resistant performance of a structural member in a vehicle body having a quenched portion with a tensile strength of 1,470 MPa or greater, but also a reduction in the shock absorbing performance associated with the HAZ softening by welding are suppressed. In a joining structure (10) for a member in a vehicle body in which a first member (11) that is made of steel, has a closed hollow cross-section having no outward flange, and is provided with a quenched portion having a tensile strength of 1,470 MPa or greater, a base material portion having a tensile strength of less than 700 MPa, and a transition portion (17) between the quenched portion (16) and the base material portion (18) in a longitudinal direction thereof, and a second member (12) that is made of steel and overlaps the first member (11) are welded to each other in an overlapping portion, the overlapping portion exists over the base material portion (18) from the quenched portion (16) of the first member (11) through the transition portion (17), and a welding portion (13) formed by welding exists in the transition portion (17) or the base material portion (18) in the first member (11).

An automotive front side frame including a bent portion having a bent form, in at least a portion, comprises an outer frame including a front outer portion and a rear outer portion disposed further to a rear of a vehicle frame than the front outer portion and formed to have tensile strength higher than tensile strength of the front outer portion; and an inner frame including a front inner portion and a rear inner portion disposed further to the rear of the vehicle frame than the front inner portion and formed to have tensile strength higher than tensile strength of the front inner portion.

A bent product having a three-dimensionally bent portion intermittently or continuously in the lengthwise direction is manufactured by supporting a steel pipe at a first position A while feeding it in the lengthwise direction, locally heating the steel pipe being fed at a second position B, cooling the heated portion of the steel pipe at a third position C, and varying the position of a gripping means, which grips the steel pipe in a region ID downstream of the third position C, in a three-dimensional direction including the feed direction of the steel pipe in a workspace including a space on the upstream side of the third position C in the feed direction of the steel pipe to impart a bending moment to the heated portion of the steel pipe.

A bent product having a three-dimensionally bent portion intermittently or continuously in the lengthwise direction is manufactured by supporting a steel pipe at a first position A while feeding it in the lengthwise direction, locally heating the steel pipe being fed at a second position B, cooling the heated portion of the steel pipe at a third position C, and varying the position of a gripping means, which grips the steel pipe in a region ID downstream of the third position C, in a three-dimensional direction including the feed direction of the steel pipe in a workspace including a space on the upstream side of the third position C in the feed direction of the steel pipe to impart a bending moment to the heated portion of the steel pipe.

Provided is a high frequency induction heating apparatus capable of quenching a workpiece having an outward flange, over the whole circumference by means of a frequency with which a penetration depth of an electromagnetic wave is larger than a sheet thickness of the workpiece The high frequency induction heating apparatus includes a high frequency induction heating coil used for heating a long hollow steel workpiece having a closed cross section and an outward flange, in 3DQ in which a bending member is manufactured from the workpiece The high frequency induction heating coil includes a magnetic material core facing each other between which both faces of the outward flange are interposed, having a distance from both faces, and an induction heating coil connected to the magnetic material core and arranged surrounding an outer circumference of a general portion where the outward flange is excluded from the workpiece.

An apparatus is provided for protectively hold an elongated object during bending and stretching of the elongated object. The apparatus includes a shell, sleds and roller sets. The shell includes a wall, support portions longitudinally extending on an internal face of the wall, and grooves separated from one another by the support portions. Each of the sleds is inserted in a corresponding one of the grooves. Each of the roller sets includes rollers attached to a corresponding one of the sleds. Each of the rollers includes a tread. The treads together provide an axial tunnel. A surface of the elongated object is in contact with the concave treads of the rollers when the elongated object is rolled in the axial tunnel during bending or stretching of the elongated object.