{"id":1665,"date":"2022-05-11T17:42:00","date_gmt":"2022-05-11T08:42:00","guid":{"rendered":"https:\/\/www.sunac.co.jp\/ftx\/?post_type=tech&#038;p=1665"},"modified":"2022-05-18T16:29:05","modified_gmt":"2022-05-18T07:29:05","slug":"013","status":"publish","type":"tech","link":"https:\/\/www.sunac.co.jp\/ftx\/en\/tech\/013\/","title":{"rendered":"Improve Crack during Upsetting Hex Head"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Improvement Method of Damage Value Assessment<\/h2>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"is-style-vk-heading-double_bottomborder_black wp-block-heading\">Purpose<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-3\">\n<div class=\"wp-block-column is-layout-flow\">\n<p>To prevent cracking in aluminium products when upsetting hex head.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\">\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.sunac.co.jp\/ftx\/manage\/wp-content\/uploads\/2022\/05\/pic-1.jpg\" alt=\"\" class=\"wp-image-1765\" width=\"288\" height=\"187\"\/><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"is-style-vk-heading-double_bottomborder_black wp-block-heading\">Method<\/h2>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-6\">\n<div class=\"wp-block-column is-layout-flow\">\n<p>1. Examine the actual product and check the crack area.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\"><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-9\">\n<div class=\"wp-block-column is-layout-flow\">\n<p>2.Check the material flow by simulation. <br>    Confirm that the hex end faces are deformed without being subjected to <br>    compressive stress because the hex upset and extrusion are done at the same time.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"678\" height=\"212\" src=\"https:\/\/www.sunac.co.jp\/ftx\/manage\/wp-content\/uploads\/2022\/04\/93bd233a2cfb4b8ce73f9080a959160b.png\" alt=\"\" class=\"wp-image-917\" srcset=\"https:\/\/www.sunac.co.jp\/ftx\/manage\/wp-content\/uploads\/2022\/04\/93bd233a2cfb4b8ce73f9080a959160b.png 678w, https:\/\/www.sunac.co.jp\/ftx\/manage\/wp-content\/uploads\/2022\/04\/93bd233a2cfb4b8ce73f9080a959160b-400x125.png 400w\" sizes=\"(max-width: 678px) 100vw, 678px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-12\">\n<div class=\"wp-block-column is-layout-flow\">\n<p>3.The crack mechanism is estimated to be failure due to accumulated ductile strain. <br>    Damage values are calculated by simulation.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\">\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.sunac.co.jp\/ftx\/manage\/wp-content\/uploads\/2022\/05\/pic-3.jpg\" alt=\"\" class=\"wp-image-1766\" width=\"257\" height=\"281\"\/><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-15\">\n<div class=\"wp-block-column is-layout-flow\">\n<p>4.To reduce the damage value, the process was changed so that extrusion and upsetting are set in separate processes. <br>   Then comfirm the damage value has been reduced.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"676\" height=\"184\" src=\"https:\/\/www.sunac.co.jp\/ftx\/manage\/wp-content\/uploads\/2022\/04\/fa6f1cee3ced863bb0414e12e3fc8ce8.png\" alt=\"\" class=\"wp-image-915\" srcset=\"https:\/\/www.sunac.co.jp\/ftx\/manage\/wp-content\/uploads\/2022\/04\/fa6f1cee3ced863bb0414e12e3fc8ce8.png 676w, https:\/\/www.sunac.co.jp\/ftx\/manage\/wp-content\/uploads\/2022\/04\/fa6f1cee3ced863bb0414e12e3fc8ce8-400x109.png 400w\" sizes=\"(max-width: 676px) 100vw, 676px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-18\">\n<div class=\"wp-block-column is-layout-flow\"><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\">\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"263\" height=\"291\" src=\"https:\/\/www.sunac.co.jp\/ftx\/manage\/wp-content\/uploads\/2022\/05\/pic-5-1.jpg\" alt=\"\" class=\"wp-image-1774\"\/><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-19\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Result<\/h2>\n\n\n\n<p>Crack during hex upsetting is solved.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Improvement Method of Damage Value Assessment Purpose To prevent cracking in aluminium products when upsetting [&hellip;]<\/p>\n","protected":false},"featured_media":926,"template":"","meta":{"_locale":"en_US","_original_post":"https:\/\/www.sunac.co.jp\/ftx\/?post_type=tech&p=904","_links_to":"","_links_to_target":""},"tech_category":[5],"tech_link":[],"_links":{"self":[{"href":"https:\/\/www.sunac.co.jp\/ftx\/wp-json\/wp\/v2\/tech\/1665"}],"collection":[{"href":"https:\/\/www.sunac.co.jp\/ftx\/wp-json\/wp\/v2\/tech"}],"about":[{"href":"https:\/\/www.sunac.co.jp\/ftx\/wp-json\/wp\/v2\/types\/tech"}],"version-history":[{"count":8,"href":"https:\/\/www.sunac.co.jp\/ftx\/wp-json\/wp\/v2\/tech\/1665\/revisions"}],"predecessor-version":[{"id":1917,"href":"https:\/\/www.sunac.co.jp\/ftx\/wp-json\/wp\/v2\/tech\/1665\/revisions\/1917"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sunac.co.jp\/ftx\/wp-json\/wp\/v2\/media\/926"}],"wp:attachment":[{"href":"https:\/\/www.sunac.co.jp\/ftx\/wp-json\/wp\/v2\/media?parent=1665"}],"wp:term":[{"taxonomy":"tech_category","embeddable":true,"href":"https:\/\/www.sunac.co.jp\/ftx\/wp-json\/wp\/v2\/tech_category?post=1665"},{"taxonomy":"tech_link","embeddable":true,"href":"https:\/\/www.sunac.co.jp\/ftx\/wp-json\/wp\/v2\/tech_link?post=1665"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}