{"id":22667,"date":"2025-09-29T14:33:21","date_gmt":"2025-09-29T06:33:21","guid":{"rendered":"https:\/\/sinoextrud.com\/?p=22667"},"modified":"2025-09-29T14:33:21","modified_gmt":"2025-09-29T06:33:21","slug":"mika-on-suurin-jaahdytyselementin-koko-jonka-voimme-tuottaa","status":"publish","type":"post","link":"https:\/\/sinoextrud.com\/fi\/what-is-the-maximum-heatsink-size-we-can-produce\/","title":{"rendered":"Mik\u00e4 on suurin j\u00e4\u00e4hdytyslevyn koko, jonka voimme valmistaa?"},"content":{"rendered":"

\"product<\/p>\n

In large-scale industrial applications, clients often ask us: can we go wider, taller, longer? The answer depends on both design and machine.<\/p>\n

Yes, we can produce heatsinks up to 550mm wide and 120mm tall in extrusion, depending on the press and fin complexity.<\/strong><\/p>\n

When a heatsink is too large, production becomes riskier. To make informed decisions, it’s important to understand how size affects extrusion feasibility.<\/p>\n

What\u2019s the largest size our heatsinks can reach?<\/h2>\n

In many projects, customers want big heatsinks\u2014especially in energy, EV, or industrial equipment. That creates stress for the die, the aluminum, and the machines.<\/p>\n

Our largest aluminum heatsink profile reached 550mm in width and 120mm in height, extruded with a 4500-ton press.<\/strong><\/p>\n

\"Description<\/p>\n

We produced this for a European customer building power inverters. The profile had high-density fins and required stable flatness on the base. We designed a custom die, optimized metal flow, and used stress-relief cooling techniques. The final product met strict tolerances.<\/p>\n

Size Limits Overview<\/h3>\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nTypical Limit<\/th>\nOur Capacity<\/th>\n<\/tr>\n<\/thead>\n
Width (Profile)<\/td>\n400\u2013500 mm<\/td>\nUp to 550 mm<\/td>\n<\/tr>\n
Height (Fin depth)<\/td>\n100 mm<\/td>\nUp to 120 mm<\/td>\n<\/tr>\n
Length<\/td>\n3\u20136 m standard, custom ok<\/td>\nUp to 8 m (on request)<\/td>\n<\/tr>\n
Weight per meter<\/td>\n3\u201310 kg\/m (common)<\/td>\n15+ kg\/m (custom design)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Our press range (500\u20134500 tons) gives us flexibility. Not every job needs maximum size. But when customers ask, we can stretch to handle large heatsinks safely.<\/p>\n

<\/svg> We can extrude heatsinks with a width up to 550mm.<\/b>True<\/span><\/p>

Our largest successful heatsink extrusion to date was 550mm wide, made with a reinforced die on a 4500-ton press.<\/p><\/div>\n

<\/svg> We can extrude heatsinks up to 1.2 meters in width.<\/b>False<\/span><\/p>

The extrusion width is limited by press capacity and die strength. 1.2 meters exceeds our current capability.<\/p><\/div>\n

What length and width are supported for heatsinks?<\/h2>\n

Many clients want to know: can the heatsink be long enough to cover their device? What about wide enough to spread heat evenly?<\/p>\n

We support heatsinks up to 550mm wide and 8 meters long, depending on weight and handling limits.<\/strong><\/p>\n

\"A<\/p>\n

Heatsinks are shaped by the cross-section and the cut length. Here\u2019s how it works:<\/p>\n

Width (Cross-section)<\/h3>\n
    \n
  • Maximum width is limited by the extrusion press\u2019s container size.<\/li>\n
  • The shape must fit inside the \u201ctool circle\u201d\u2014usually up to 500mm for our largest dies.<\/li>\n
  • The profile\u2019s width includes all fins, web thickness, and base plate.<\/li>\n<\/ul>\n

    If a profile exceeds this, we suggest modular designs. For example, two halves joined by CNC or post-welding.<\/p>\n

    Length<\/h3>\n
      \n
    • Standard bar length is 3\u20136 meters.<\/li>\n
    • Longer lengths are possible up to 8 meters, but handling gets harder.<\/li>\n
    • We often cut to size before machining to reduce warpage.<\/li>\n<\/ul>\n

      Long profiles are cut after extrusion, then cooled and straightened. For precision parts, we machine surfaces after cutting.<\/p>\n

      Design Tip<\/h3>\n

      Use the full width only if necessary. More aluminum means higher cost, slower cooling, and tighter tolerances.<\/p>\n\n\n\n\n\n\n\n
      Profile Parameter<\/th>\nMinimum<\/th>\nRecommended Maximum<\/th>\nAbsolute Maximum<\/th>\n<\/tr>\n<\/thead>\n
      Width<\/td>\n20 mm<\/td>\n400\u2013450 mm<\/td>\n550 mm<\/td>\n<\/tr>\n
      Height (fins)<\/td>\n10 mm<\/td>\n100 mm<\/td>\n120 mm<\/td>\n<\/tr>\n
      Length<\/td>\n100 mm<\/td>\n3000\u20136000 mm<\/td>\n8000 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      <\/svg> Extruded heatsinks can be cut to any length after extrusion.<\/b>True<\/span><\/p>

      Extrusion produces continuous bars that can be cut to any custom length.<\/p><\/div>\n

      <\/svg> The maximum possible length of a heatsink is 1 meter.<\/b>False<\/span><\/p>

      Extrusion allows much longer lengths\u2014up to 6\u20138 meters depending on machine and handling.<\/p><\/div>\n

      Do we have limitations on extrusion size?<\/h2>\n

      Yes\u2014size matters a lot in heatsink extrusion. We can\u2019t push past physical and mechanical limits.<\/p>\n

      We are limited by press size, die strength, cooling control, and material flow\u2014especially for wide or complex heatsinks.<\/strong><\/p>\n

      \"Image<\/p>\n

      Let me break this down simply:<\/p>\n

      1. Die and Press Size<\/h3>\n

      Every extrusion press has a maximum \u201ccontainer diameter\u201d (tool circle). If the profile doesn\u2019t fit inside, it can\u2019t be extruded.<\/p>\n

        \n
      • Our 4500-ton press handles up to 550mm tool circle.<\/li>\n
      • Die strength becomes a problem above 500mm.<\/li>\n
      • Larger presses are rare and expensive to maintain.<\/li>\n<\/ul>\n

        2. Fin Geometry<\/h3>\n

        Fin spacing, thickness, and height must stay within safe limits. Extremely tall and thin fins can break the die or cause uneven flow.<\/p>\n

          \n
        • Fin height to gap ratio: try to stay under 10:1.<\/li>\n
        • Fin thickness: minimum 1.5mm for structural stability.<\/li>\n
        • Fin base must allow even flow and easy cooling.<\/li>\n<\/ul>\n

          3. Cooling and Straightness<\/h3>\n

          Large heatsinks cool unevenly. That creates warping. We use:<\/p>\n

            \n
          • Water quenching<\/li>\n
          • Stretch straightening<\/li>\n
          • Aging ovens to stabilize structure<\/li>\n<\/ul>\n

            4. CNC and Machining<\/h3>\n

            Bigger profiles are harder to machine. Warpage affects tolerances.<\/p>\n

            For precision surfaces, we use:<\/p>\n

              \n
            • CNC flat milling<\/li>\n
            • High-torque clamping<\/li>\n
            • Stress-relief cycles before final machining<\/li>\n<\/ul>\n

              5. Logistics<\/h3>\n

              Shipping large profiles is more expensive. We offer:<\/p>\n

                \n
              • On-site packaging and protection<\/li>\n
              • Custom cut lengths<\/li>\n
              • End machining to reduce volume<\/li>\n<\/ul>\n

                If your heatsink is too big for one piece, we help split it. Either by bonding, welding, or mechanical joint design.<\/p>\n

                <\/svg> Larger heatsink profiles need more complex cooling and straightening procedures.<\/b>True<\/span><\/p>

                Bigger profiles trap more heat and cool unevenly, which causes warping unless managed.<\/p><\/div>\n

                <\/svg> There are no practical size limits for extruded heatsinks.<\/b>False<\/span><\/p>

                Tooling size, die limits, and machine handling all create real-world constraints on heatsink extrusion.<\/p><\/div>\n

                How does size affect production feasibility?<\/h2>\n

                Going bigger sounds better\u2014but it\u2019s not always smarter. Bigger heatsinks create more risk, cost, and delay.<\/p>\n

                As heatsink size increases, production gets harder\u2014costlier dies, longer cooling time, warpage, and lower yield.<\/strong><\/p>\n

                \"High-resolution<\/p>\n

                Let\u2019s break down how size affects each step:<\/p>\n

                Tooling and Die Design<\/h3>\n\n\n\n\n\n\n\n
                Factor<\/th>\nSmall Profile<\/th>\nLarge Profile<\/th>\n<\/tr>\n<\/thead>\n
                Die Cost<\/td>\nLow ($500\u2013$1,000)<\/td>\nHigh ($3,000\u2013$10,000)<\/td>\n<\/tr>\n
                Lead Time<\/td>\n2\u20133 weeks<\/td>\n4\u20136 weeks<\/td>\n<\/tr>\n
                Stress Risk<\/td>\nLow<\/td>\nHigh\u2014need simulation and testing<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                Large dies wear faster and may crack under pressure. We run simulations before building large dies.<\/p>\n

                Extrusion and Cooling<\/h3>\n\n\n\n\n\n\n\n
                Factor<\/th>\nSmall Profile<\/th>\nLarge Profile<\/th>\n<\/tr>\n<\/thead>\n
                Extrusion Time<\/td>\nFast<\/td>\nSlower extrusion, harder to push<\/td>\n<\/tr>\n
                Cooling<\/td>\nQuick air cooling<\/td>\nWater quenching or controlled zone<\/td>\n<\/tr>\n
                Warpage Risk<\/td>\nLow<\/td>\nHigh\u2014must be straightened<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                Post-Processing<\/h3>\n
                  \n
                • Long heatsinks may bend slightly\u2014so CNC faces must be realigned.<\/li>\n
                • Tall fins may vibrate during cutting\u2014need careful clamping.<\/li>\n
                • Coating (anodizing, powder) must account for longer tanks or divided runs.<\/li>\n<\/ul>\n

                  Material and Cost<\/h3>\n
                    \n
                  • More aluminum = more money<\/li>\n
                  • More risk = higher waste rate<\/li>\n
                  • More setup time = longer lead times<\/li>\n<\/ul>\n

                    When size rises, all these factors multiply.<\/p>\n

                    Final Advice<\/h3>\n

                    Before going big:<\/p>\n

                      \n
                    • Ask: can we split the design?<\/li>\n
                    • Ask: are tall fins really needed?<\/li>\n
                    • Ask: can we optimize air flow instead?<\/li>\n<\/ul>\n

                      We often help clients reduce size without losing performance. Better airflow or thicker base often beats tall fins.<\/p>\n

                      <\/svg> Bigger heatsinks always result in lower production costs per unit.<\/b>False<\/span><\/p>

                      Larger heatsinks usually increase die cost, scrap rate, and cycle time, making each unit more expensive.<\/p><\/div>\n

                      <\/svg> Designing heatsinks within standard extrusion limits improves cost and lead time.<\/b>True<\/span><\/p>

                      Profiles that match the press size and die tolerances are faster and cheaper to produce.<\/p><\/div>\n

                      Conclusion<\/h2>\n

                      Large heatsinks are possible\u2014but they come with challenges. We can extrude up to 550mm wide, but we always suggest designing within stable limits to get better cost, quality, and delivery.<\/p>\n","protected":false},"excerpt":{"rendered":"

                      In large-scale industrial applications, clients often ask us: can we go wider, taller, longer? The answer depends on both design and machine. Yes, we can produce heatsinks up to 550mm wide and 120mm tall in extrusion, depending on the press and fin complexity. When a heatsink is too large, production becomes riskier. To make informed […]<\/p>\n","protected":false},"author":6,"featured_media":22663,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-22667","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-custom-mold"],"meta_box":{"post-to-quiz_to":[]},"_links":{"self":[{"href":"https:\/\/sinoextrud.com\/fi\/wp-json\/wp\/v2\/posts\/22667","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sinoextrud.com\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sinoextrud.com\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/fi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/fi\/wp-json\/wp\/v2\/comments?post=22667"}],"version-history":[{"count":0,"href":"https:\/\/sinoextrud.com\/fi\/wp-json\/wp\/v2\/posts\/22667\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/fi\/wp-json\/wp\/v2\/media\/22663"}],"wp:attachment":[{"href":"https:\/\/sinoextrud.com\/fi\/wp-json\/wp\/v2\/media?parent=22667"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sinoextrud.com\/fi\/wp-json\/wp\/v2\/categories?post=22667"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sinoextrud.com\/fi\/wp-json\/wp\/v2\/tags?post=22667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}