Topic
Stamping
About: Stamping is a research topic. Over the lifetime, 22501 publications have been published within this topic receiving 83554 citations.
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TL;DR: In this article, metallic bipolar plate (BPP) samples manufactured with stamping and hydroforming under different process conditions were tested for their electrical contact resistance characteristics to reveal the effect of manufacturing type and conditions.
60 citations
TL;DR: In this article, the wear performance of seven different uncoated die materials (AISI D2, Vanadis 4, Vancron 40, K340 ISODUR, Caldie, Carmo, 0050A) was investigated and compared using a newly developed wear testing device.
Abstract: Newer sheet alloys (such as Al, Mg, and advanced high-strength steels) are considered for automotive body panels and structural parts to achieve lightweight construction. However, in addition to issues with their limited formability and high springback, tribological conditions due to increased surface hardness and work hardening necessitate the use of alternative microstructurally improved die materials, coatings, and lubricants to minimize the wear-related die-life issues in stamping of advanced high-strength steel grades. This study aims to investigate and compare the wear performances of seven different, uncoated die materials (AISI D2, Vanadis 4, Vancron 40, K340 ISODUR, Caldie, Carmo, 0050A) using a newly developed wear testing device. DP600 AHSS (advanced high-strength steel) sheets were used in these tests. It was concluded that the tested die materials demonstrated higher wear resistance performance when compared to the conventional tool steel AISI D2 die material.
60 citations
TL;DR: In this paper, a stochastic response surface model is used to predict the performance tolerance of sheet metal forming to fluctuation of noise factors, which can also be applied to other kind of sheetmetal forming.
60 citations
Patent•
12 Jun 1996
TL;DR: In this article, a heat transfer sheet, on the side having a release property of a releasable supporting body, a layer comprising of an acrylic based ultraviolet ray hardening resin, an intermediate layer consisting of a polyvinyl butyral resin of which the degree of polymerization is 1000 or higher or a thermally hardening resins of polybutiral, and a bonding layer, comprising of a urethane modified ethylene ethyl acrylate copolymer and a polyacreylic ester copolymers, are provided in order.
Abstract: PROBLEM TO BE SOLVED: To provide an ID card manufacture process by which an ID card being excellent in durability and forgery preventive capability, can be easily made, and of which the maintenance is simple. SOLUTION: For this heat transfer sheet, on the side having a release property of a releasable supporting body, a layer comprising of an acrylic based ultraviolet ray hardening resin, an intermediate layer comprising of a polyvinyl butyral resin of which the degree of polymerization is 1000 or higher or a thermally hardening resin of polybutiral, and a bonding layer comprising of a urethane modified ethylene ethyl acrylate copolymer and a polyacreylic ester copolymer, are provided in order. Then, after providing a transparent inorganic thin film on the ultraviolet ray hardening resin layer or the intermediate layer, a stamping is applied to form a transparent hologram, or the stamping is applied on the ultraviolet ray hardening resin layer or the intermediate layer, and a transparent inorganic thin film is provided to form the transparent hologram. Also on an image or a printed surface side of the base body wherein at least one being selected out of a certification-identification image, an attribute information image and a formed printing, is printed, a protective layer is formed by using the previously mentioned heat transfer sheet.
60 citations
TL;DR: In this paper, an engineering methodology is presented for the structural assessment of the stamping tooling and the die-face designs during the sheet metal forming processes, which is employed in the forming interface design of an automotive stamping part including the complete die construction.
60 citations