This study investigates a manufacturing process that can produce a tailored rolled blankstrb having variable. Based on the production process, tailored blanks can be categorized in four different groups fig. Mubea tailor rolled blanks, llc in florence ky company profile. Read increasing of the drawing depth using tailor rolled blanksnumerical and experimental analysis, international journal of machine tools and manufacture on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at. As a new type of variable thickness sheet structure, the trb tailor rolled blank has good prospects for the development of lightweight materials in the automotive industry. To fully exploit the potential of sheet and profiles, various technologies to produce tailored blanks and profiles have been developed 1,2. Tailorrolled blanks are ideal not only for vehicle body structural components, but also for suspension components that encounter different loads across their length. Trbtwb in the automotive industry has been known to offer great potential for the optimization of. Tailor rolled blanktrb is worth studying due to its great development potential for auto body lightweight. While existed traditional methods can hardly solve these problems. Rolling processes with a varying roll gap allow the production of blanks with adjustable sheet thickness in rolling direction.
Bending analysis and design optimisation of tailorrolled. Tailor welded blanks are defined as two or more sheets of blanks with equal or different thickness, strength, or surface coatings welded together before forming process in the automotive workshop. Springback characteristics of cylindrical bending of tailor. Request pdf manufacturing of sheet metal parts from tailor rolled blanks with respect to the preserving of ressources, lightweight construction and the. Tailor tubes, a process and equipment are required that forms the plate to tubes and. Jan 10, 2017 using the cold stamping process, aluminum tailor rolled blanks trb have been recently used to manufacture automotive parts to reduce the body weight of cars.
Tailor welded blanks were originally produced by the german firm thyssenkrupp steel ag in 1985. It is common to use optimization techniques in order to identify and tab existing lightweight potentials as well as design tailor. Tailored blanks are semifinished parts, which are typically made from sheets with different. By varying the rolling nip parts with load adapted thickness profiles and continuous transitions are manufactured. A uniform stress field is obtained along the gauge length of the.
Mubea relies on hyperworks unlimited for automotive component. Flexible rolling of tailor rolled blanks american iron and. Tailored profiles made of tailor rolled strips by roll. Trbtwb in the automotive industry has been known to offer great potential for the optimization of weight, function, cost and complexity. Pdf excel mubea tailor rolled blanks, llc overview. Virtual prototyping of hot formed tailored lightweight designs. Research on formability of tailor rolled blank in stamping. Patchwork blanks are sheets that are locally reinforced by attaching smaller sheets patches in the lap configuration by laser welding or adhesives. Experiments and preliminary simulation results rogelio perezsantiago1, eren billur2, agim ademaj3.
Combined isogeometric analysis iga and shape optimization, this paper provides a method that can accurately analyze tailor rolled blanks trb and optimize its thickness profile continuously. Dimensional characteristics of tailor rolled blanks. Generally, cold rolled steel coils are introduced into a continuous hotdip. A tailor rolled blank is a semifinished part that can be used to produce stamping parts with continuous thickness variations. High performance computing speeds up optimization processes.
Oems and suppliers include every possible technique to support lightweighting in the automotive industry. Research on trb springback characteristics has great significance for further applications due to variations in the sheet thickness and gradient distribution of the. Tailored blank atailored blank is a sheet of steel that combines several grades and or various thicknesses and or different coatings, the. Nov 18, 2015 tailor welded blanks were originally produced by the german firm thyssenkrupp steel ag in 1985. The usage of aluminum alloys in the automotive industry has significantly increased in recent years leading to a substantial weight reduction. Manufacturing of tailorrolled blanks with thickness. In this paper, the microstructure and mechanical properties that distribute regulation along the rolling direction of tailor rolled blanks trb were. In combination with advanced high strength steel, tailor welded blanks offer substantial potential for vehicle safety improvement and weight savings while reducing overall production costs. The results obtained from uniaxial tensile test revealed that the total elongation of tailor rolled blanks decreases from 3 to 0. Laser welding direction is parallel to the rolling direction. Tailor rolling blanks trb act an important method for automobile lightweight, the process model of trb forming panels is put forward, key technologies for trb rolling including trb synthesized mathematic model, integrated control model of trb thickness based on multidomains and frame model of trb thickness integrated control are presented fused with virtual manufacturing technologyvmt and. Annealing of hc340la tailor rolled blankscontrol of.
However, when used to achieve uniform mechanical properties, the conventional method of aluminum trb leads to low formability and excessive springback, and it also requires additional heat treatment because of thickness difference and. Through the flexible rolling process and appropriate annealing treatment, the target geometry, required mechanical properties, and good formability of trb can be achieved. Hence, load adapted thickness material runs are possible which lead to semifinished products tailor rolled blanks and parts stamped parts and tubes made from tailor rolled blanks. The new technology in the automotive industry by using tailor welded blanks yan qi abstract. Dimensional characteristics of tailor rolled blanks having. Cost reduction due to omittance of storing and one production step stackling of blanks. Before the introduction of tailor welded blanks, automobile parts were stamped one by one based on the the different thicknesses and material compositions of each part. Mubea relies on hyperworks unlimited for automotive.
Because of few amount of molten metal in laser welding, it is necessary to keep a gap narrow between welding edges and to track the weld line. Mubea tailor rolled blanks gmbh, attendorn credit report. Introduction tailor rolled blanks, which are introduced in the car manufacturing industry, are rolled steel production with varying thickness. Twb company expanded its core business of tailor welded blanks for use in sheetfed transfer and. As a result of the flexible rolling process, the number of. Tailor welded blanks twb are made from individual sheets of steel of different thickness, strength and coating which are joined together by laser welding. Apr 28, 2018 europe pmc is an archive of life sciences journal literature. Twb is mainly used in the body in white area for joining metal sheets of. Springback characteristics of cylindrical bending of. Process design of aluminum tailor heat treated blanks. The rolling process is subjected several manufacturing constraints like the maximal thickness reduction or the maximal slope. Tailor rolled blanks trb are an established lightweight application for highly stressed structural parts in automotive industry. Mubea tailor rolled blanks, llc in florence ky company. Tailor rolled blanks trbs have also been developed to overcome the drawbacks with twbs like stress concentrations across thickness transitions and other forming limitations with twbs, 14,15.
We have opened up completely new areas of application for tailored steel solutions with the development of tailor welded coils. The adoption of tailored rolled or tailor welded blanks i. Tailored blanks with different blank thicknesses are semifinished parts that can be used to produce. Mubea tailor rolled blanks gmbh has its registered office in attendorn, germany. Tailor welded blanks are defined as two or more sheets of blanks with equal or different thickness, strength, or surface coatings welded together before forming process in the. In this paper, we will focus on hot stamping of tailor rolled blanks trbs, as illustrated in figure 1. The adoption of tailoredrolled or tailorwelded blanks i. Search our database of over 100 million company and executive profiles. Tailor rolled blanks trb are sheets with a continuous thickness transition. The new technology in the automotive industry by using. The new technology in the automotive industry by using tailor. Mubea mubeamubea sssstargets regarding tailored rolled twist beamtargets regarding tailored rolled twist beam. Integrated lightweight construction this is a combination of various materials and functional characteristics based on the use of bonding technologies and production processes.
Flexible rolling of tailor rolled blanks innovative light weight design in steel dr. Tailor rolled blanks shall be produced from continuous cast hot or cold rolled coilsstrip usually supplied in thicknesses 1. Selected processes and modeling techniques for rolled. Effects of thickness ratio on the total elongation of tailor rolled blanks. This paper describes the rolling process of trb, and rolling simulation model of trb was constructed using deform3d. Material related design with tailor rolled products. Pdf research on formability of tailor rolled blank in. Abstractthe purpose of this paper is to provide efficient lightweight design for improving the loading carrying efficiency and energy absorption capability of tailor rolled blank thinwalled structure with tophat section trbth under transverse loading. First, a new finiteelement fe modelling method for the trbth structure is proposed. Structural bonding of lightweight cars crash durable, safe. The thickness variations are desired to obtain a loadoptimized wall. In the united states, arcelormittal has one whollyowned tailored blanks facility in detroit and operates three joint ventures. A tensile specimen of tailor rolled blanks with equal probability in. Vehicle light weighting can further be achieved by using high strength aluminum alloys like.
Tensile behavior of tailor rolled blanks with longitudinal thickness transition zone. In earlier work 3 it has been shown that strip profile rolling spr can be used to produce metal strips with a predefined thickness distribution across the width of the strip. The use of tailored rolled blanks, with variable blank thickness, is a relatively new application in. Investigation of tailored blank production by the process. Tailor rolled blanks trb is made by flexible rolling system. Mubea contact contact options international contacts.
This weight reduction trend has to be pursued through additional lightweighting technologies. Increasing of the drawing depth using tailor rolled blanks. Accurate analysis and thickness optimization of tailor. Tailor welded blanks and coils are made from individual sheets or slit coils and can combine various thickness, grade, and coatings as required by the end used product into a single sheet or coil. Mechanics of thinmechanics of thin walled tailor rolled memberswalled tailor rolled members 6. The use of tailoredrolled blanks, with variable blank thickness, is a relatively new application in. Tailored coils a new process to further expand tailored. Tailor rolled blanks trb have been extensively used in the automotive industry because of lightweight.
Virtual prototyping of hot formed tailored lightweight designs eren billur 1. Trb was used for square box forming, and the effects of thickness transition zonettz position as well as blank size on the formability of trb were analyzed. Pdf tailor rolled blanktrb is worth studying due to its great development. Virtual prototyping of hot formed tailored lightweight designs eren billur 1, harald porzner 2, martin holecek 3 and taylan altan1 abstract tailored solutions are one key to the lightweight construction challenges of the future.
The company is registered at the trade register at the local court of siegen with the legal form of private limited company number hrb 9199. Optimization potentials of tailor rolled components for. Twbs can be composed of 1 two or more different thicknesses, 2. Shape rolling simulation of tailor rolled blanks based on. Due to the development of lightweight technology in the automobile industry, tailored blanks based on new material processing technology such as tailor welded blanks twb and tailor rolled blanks trb have been widely studied and well developed recently. Finding the best thickness run parameterization for. Tailorwelded or tailorrolled blanks are related technologies that make use of this principle.
An accurate description of material properties is crucial to predict the forming behavior of tailor heat treated blanks by simulation. Tailor welded or tailor rolled blanks are related technologies that make use of this principle. Accurate analysis and thickness optimization of tailor rolled. This profile for mubea tailor rolled blanks, llc is located in florence, ky. The key idea of the socalled tailor heat treated blanks thtb is optimization of the mechanical properties by local heat treatment before the forming operation.
This study investigates a cold manufacturing process to fabricate a trb with variable thickness variations in both the longitudinal and latitudinal directions. Apr 14, 2016 combined isogeometric analysis iga and shape optimization, this paper provides a method that can accurately analyze tailor rolled blanks trb and optimize its thickness profile continuously. This paper focuses on the manufacturing and processing of tailored products, i. A tensile specimen of tailor rolled blanks with equal. In combination with advanced high strength steel, tailor welded blanks offer substantial potential for vehicle safety improvement and. Manufacturing of sheet metal parts from tailor rolled blanks. With its good bearing capacity and designed, it can be used to make automotive body for reducing the material and lower the weight.
I tailored blanks value proposal ey frqrplfdogulyhuv in order to determine, together with the design departments of the customers, whether a part is suitable as a tailor welded blank or not, tailored blanks proposes support for design and cost estimation of the ynal part. This process allows for the right properties in the right place. Great flexibility in this design is offered by trb, because the thickness and hence the strength of the components are locally increased. High performance computing speeds up optimization processes for tailor rolled blanks at mubea download pdf. Tailor blanks tubes although twb is not new for the automotive industry, it is yet relatively unknown for truck frames. The stamped parts were then welded together to create a complete piece. Europe pmc is an archive of life sciences journal literature. May 17, 20 tailor rolled blanktrb is worth studying due to its great development potential for auto body lightweight. View company leaders and background information for mubea tailor rolled blanks, llc. Use of tailor welded blanks twb and tailor rolled blanks trb in hot stamping has been studied since 2008 and 2006, respectively.
Ohsas 18001 occupational health and safety management system pdf, 160. Iterative learning control for tailor rolled blanks. A new tensile specimen is introduced to evaluate the tensile behavior of tailor rolled blanks. Tailor rolling blankstrb act an important method for automobile lightweight, the process model of trb forming panels is put forward, key technologies for trb rolling including trb synthesized mathematic model, integrated control model of trb thickness based on multidomains and frame model of trb thickness integrated control are presented fused with virtual manufacturing technologyvmt and. The result is a tailor welded coil which has all the advantages of a classic tailored product and can be used in many areas in the automotive industry.
Abstractthe purpose of this paper is to provide efficient lightweight design for improving the loading carrying efficiency and energy absorption capability of tailorrolled blank thinwalled structure with tophat section trbth under transverse loading. Integrated hot forming and heat treatment process on al6061. A tailorrolled blank is a semifinished part that can be used to produce stamping parts with continuous thickness variations. Resource library customer stories high performance computing speeds up optimization processes for tailor rolled blanks at mubea download pdf oems and suppliers include every possible technique to support lightweighting in the automotive industry. Trb has a continuous transition between the thick and thin and a better surface quality. Virtual prototyping of hot formed tailored lightweight. These different blank thicknesses are made on a cold rolling mill. And the thickness of trb can be determined according to the load of this section. Tensile behavior of tailor rolled blanks with longitudinal thickness. Pdf research on formability of tailor rolled blank in stamping. Tailored blanks can be made by, welding tailor welded blanks. The so called tailor rolled blanks trb are produced by a closed loop controlled modification of the roll gap during the flat rolling process ensuring that the predefined thickness distribution is achieved within tight tolerances.
1317 785 1448 1073 1367 494 707 303 1330 1443 1544 600 1118 1334 1255 875 1583 990 639 1072 908 282 133 1475 1240 365 1218 605 23 846 588 1284 668 163 1018 688 824 264 1198 329 2 294 998 755 762 112