{"id":3764165,"date":"2019-04-17T18:24:04","date_gmt":"2019-04-17T18:24:04","guid":{"rendered":"https:\/\/www.sltl.com\/towards-faster-and-safer-railways\/"},"modified":"2024-04-13T09:08:23","modified_gmt":"2024-04-13T09:08:23","slug":"towards-faster-and-safer-railways","status":"publish","type":"post","link":"https:\/\/www.sltl.com\/de\/towards-faster-and-safer-railways\/","title":{"rendered":"Auf dem Weg zu schnelleren und sichereren Eisenbahnen"},"content":{"rendered":"<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The train network in India is very extensive and accommodates a lot of frequently traveling passengers as well as the transport of heavy goods for the booming industrial needs. India&#8217;s important energy sector relies on coal and thermal fossil fuels, which were readily available to industry via the train network. Under this strain, the railway always strives to make maximum use of its routes and capacities.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Recently, Indian Train bogie manufacturing company ICF Indian Coach Factory surpassed the long-standing industry leader to become the world&#8217;s largest railway bogie manufacturing unit by producing more than expected in the financial year 2018-19. Due to India&#8217;s diverse terrain, railways seem to be the perfect transport for both passenger and freight services. The industry is challenged to improve current capacity to build train bogies with increased strength and ergonomics.<\/span><\/span><\/p>\n<p><img decoding=\"async\" style=\"border-style: solid; border-width: 1px; height: 394px; width: 750px;\" src=\"https:\/\/sltl.com\/assets\/images\/Indian-Railway-Laser-Machines-2.jpg\" alt=\"Indian Railway uses SLTL Group laser machines\" \/><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">To understand the scenario, we need to look at the existing technology for welding train bogies. Understanding the scope of possible improvements and alternatives.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Before the introduction of fiber laser technology, the industry used MIG and TIG welding to weld sidewalls. These techniques were quite outdated and allowed for minimal upgrades over the last decade. When using these conventional methods, other processes must be combined to meet increasing aesthetic and strength requirements. Here are some disadvantages of the systems:<\/span><\/span><\/p>\n<ul>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Using shielding gas when welding can prove costly<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">MIG welding requires great dexterity and skill<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">GMAW welding requires significant amounts of heat<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Heat is transferred to the metal workpiece and can cause deformation and also a change in the structure of the metal, which can lead to weak points in the welds<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Susceptible to contamination<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">High setup costs<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">UV rays can cause burns<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Is limited to draft-free conditions<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Requires high skills<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Equipment and supplies are expensive<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Not portable and unsuitable for outdoor welding<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Due to the fluidity of the weld, use in vertical or overhead positions is not possible<\/span><\/span><\/li>\n<\/ul>\n<p><strong><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">A new approach<\/span><\/span><\/strong><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">At <\/span><\/span><strong><a href=\"https:\/\/www.sltl.com\/about\/\" target=\"_blank\" rel=\"noopener\"><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">SLTL Group,<\/span><\/span><\/a><\/strong><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\"> we focus on continuous innovation and consider innovation is a never-ending process. One of the numerous research experiments conducted by SLTL&#8217;s in-house team suggests that laser welding offers higher weld strength (up to 59%) compared to traditional welding. The team conducted industry standard and specialized testing to ensure the excellent quality of the weld. The team achieved successful results in the tensile and bending test, hardness test, macrostructure test, liquid penetrant test and 180 degree bend test of the weld joint. From now on increasing the safety factor of a wagon. The machine&#8217;s ability to perform efficient welding improved the overall aesthetics.<\/span><\/span><\/p>\n<ul>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Weld strength: The laser weld is narrow with an excellent depth-to-width ratio and higher strength.<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Heat Affected Zone: The heat affected zone is limited and due to rapid cooling, the surrounding material is not annealed.<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Metals: Lasers successfully weld carbon steel, high-strength steel, stainless steel, titanium, aluminum and precious metals as well as dissimilar materials.<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Precision work: The small, strictly controlled laser beam enables precise micro-welding of miniature components.<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Deformation: Parts exhibit minimal deformation or shrinkage.<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">No Contact: No physical contact between material and laser head.<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Single-sided welding: Laser welding can replace spot welding, which only requires access from one side.<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Scrap: Laser welding is controllable and produces small amounts of scrap.<\/span><\/span><\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.sltl.com\/product-category\/industrial-laser\/23\/laser-welding-machines.html\"><img decoding=\"async\" style=\"border-style: solid; border-width: 1px; h\u00f6he: 394px; breite: 750px;\" src=\"https:\/\/www.sltl.com\/assets\/images\/Indian-Railway-Using-Laser-Machines-3.jpg\" alt=\"Indian Railway uses laser systems from SLTL Group\" \/><\/a><\/p>\n<p><strong><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Train Bogie laser welding machine<\/span><\/span><\/strong><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">With all the experiments and conclusions drawn, the team at SLTL essentially created the first-of-its-kind laser welding machine for railway bogies. The machine supports sheets with solid structure and allows fine alignment of the sheet for welding. The convenient integrated vision system makes it easy to spot small gaps (often invisible to the naked eye) and properly align sheets for welding. The laser welding process then carried out produces a continuous laser beam on the component and creates a flowing weld line. The process requires minimal space and gives the resulting component unparalleled strength. With machines like this, Indian Railways thrives with excellent build quality.<\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Eines der zahlreichen Forschungsexperimente, die das interne Team von SLTL durchgef\u00fchrt hat, legt nahe, dass das Laserschwei\u00dfen im Vergleich zum herk\u00f6mmlichen Schwei\u00dfen eine h\u00f6here Schwei\u00dffestigkeit bietet<\/p>\n","protected":false},"author":1,"featured_media":77218,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2460],"tags":[190,192,189,191],"class_list":["post-3764165","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-laser","tag-laser-welding-machine","tag-panel-welding","tag-railways","tag-train-bogie"],"_links":{"self":[{"href":"https:\/\/www.sltl.com\/de\/wp-json\/wp\/v2\/posts\/3764165","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sltl.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sltl.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sltl.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sltl.com\/de\/wp-json\/wp\/v2\/comments?post=3764165"}],"version-history":[{"count":0,"href":"https:\/\/www.sltl.com\/de\/wp-json\/wp\/v2\/posts\/3764165\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sltl.com\/de\/wp-json\/wp\/v2\/media\/77218"}],"wp:attachment":[{"href":"https:\/\/www.sltl.com\/de\/wp-json\/wp\/v2\/media?parent=3764165"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sltl.com\/de\/wp-json\/wp\/v2\/categories?post=3764165"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sltl.com\/de\/wp-json\/wp\/v2\/tags?post=3764165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}