FRONT RAIL FOR VEHICLE UNDERBODY ASSEMBLY WITH VARIED STRENGTH ZONES

• Main Authors: Boyina, Sridhar Santi, Nusier, Saied, Telukunta, Rohit, Sohmshetty, Raj, Baccouche, Mohamed Ridha
• Format: Patent
• Language: English
• Published: 20.12.2018
• Subjects: CHEMISTRY; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; MOTOR VEHICLES; PERFORMING OPERATIONS; PUNCHING METAL; TRAILERS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

A vehicle underbody assembly may include a pair of front rails, a pair of hinge pillars, a pair of crush cans, a pair of bumper supports, and a bumper. Each of the front rails includes a front portion, a mid-portion, and a backup portion. Each of the hinge pillars may be attached to one of the backup portions. Each of the crush cans may be attached to one of the front portions. Each of bumper supports may be secured to one of the crush cans. The bumper may be attached to the bumper supports. The front portions and the backup portions may be heat treated to have a higher strength than the mid-portions. Each of the front portions and the backup portions may be heated to define a hard strength zone and the mid-portion may be heated to define a medium strength zone.