1.0Sakamura Machine Co.,Ltd.https://www.sakamura.org/engOgawa Norishigehttps://www.sakamura.org/eng/author/admin_ogawa/rich600338<blockquote class="wp-embedded-content" data-secret="OA2q2XVNk7"><a href="https://www.sakamura.org/eng/tech/te01-05_ondo/">Classification Due to Temperature Range</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.sakamura.org/eng/tech/te01-05_ondo/embed/#?secret=OA2q2XVNk7" width="600" height="338" title="“Classification Due to Temperature Range” — Sakamura Machine Co.,Ltd." data-secret="OA2q2XVNk7" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.sakamura.org/eng/wp-includes/js/wp-embed.min.js </script> https://www.sakamura.org/eng/wp-content/uploads/te01-05_ondo_thum.jpg540280Different temperature ranges are used when forging, depending on the properties and shape of the piece to be worked on. Depending on the temperature, there is cold, warm, and hot forging. Formers used in cold forging are called, “cold formers.” Warm forging formers are called “warm formers,” and hot forging uses “hot formers.”