gdkenna.alibaba/?spm=a261y.7663282.descBanner.1.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">Crucible CPM REX M4HCHS)高速鋼
gdkenna.alibaba/?spm=a261y.7663282.descBanner.2.18f7128dhnneEI" style="text-decoration: none; color: rgb(255, 115, 0); outline: 0px; transition: color 0.3s ease 0s;"> Crucible CPM REX M4是一種具有高耐磨性的特殊用途高速鋼。此種鋼材含有高碳及高釩,具有優良的耐磨性,適合做為冷作衝頭、嵌入模及高速輕切削的切削刀具。加工具有磨耗性的材料時,REX M4明顯地較M2或M3有更好的抗磨耗能力。此外,因為CPM REX M4是採用Crucible公司特有之 "粉粒冶金 (CPM) "技術制造的,使其較傳統的M3有更好的研磨性,較傳統的M2有更佳的韌性。
gdkenna.alibaba/?spm=a261y.7663282.descBanner.3.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;"> CPM REX M4添加0.06的硫,在鋼材中形成微細且均勻分布的硫化物,可以改善其機械加工性及研磨性,但對於刃口韌性沒有不良的影響。
gdkenna.alibaba/?spm=a261y.7663282.descBanner.4.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">合金成分
gdkenna.alibaba/?spm=a261y.7663282.descBanner.5.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">碳(C) | gdkenna.alibaba/?spm=a261y.7663282.descBanner.6.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">1.35% | gdkenna.alibaba/?spm=a261y.7663282.descBanner.7.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">(1.42%) |
gdkenna.alibaba/?spm=a261y.7663282.descBanner.8.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">錳(Mn) | gdkenna.alibaba/?spm=a261y.7663282.descBanner.9.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">0.30% | gdkenna.alibaba/?spm=a261y.7663282.descBanner.10.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">(0.70%) |
gdkenna.alibaba/?spm=a261y.7663282.descBanner.11.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">矽(Si) | gdkenna.alibaba/?spm=a261y.7663282.descBanner.12.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">0.30% | gdkenna.alibaba/?spm=a261y.7663282.descBanner.13.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">(0.55%) |
gdkenna.alibaba/?spm=a261y.7663282.descBanner.14.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">鉻(Cr) | gdkenna.alibaba/?spm=a261y.7663282.descBanner.15.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">4.00% |
|
gdkenna.alibaba/?spm=a261y.7663282.descBanner.17.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">釩(V) | gdkenna.alibaba/?spm=a261y.7663282.descBanner.18.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">4.00% |
|
gdkenna.alibaba/?spm=a261y.7663282.descBanner.20.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">鎢(W) | gdkenna.alibaba/?spm=a261y.7663282.descBanner.21.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">5.50% |
|
gdkenna.alibaba/?spm=a261y.7663282.descBanner.23.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">鉬(Mo) | gdkenna.alibaba/?spm=a261y.7663282.descBanner.24.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">4.50% | gdkenna.alibaba/?spm=a261y.7663282.descBanner.25.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">(5.25%) |
gdkenna.alibaba/?spm=a261y.7663282.descBanner.26.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">硫(S) | gdkenna.alibaba/?spm=a261y.7663282.descBanner.27.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">0.06% | gdkenna.alibaba/?spm=a261y.7663282.descBanner.28.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">(0.22%) |
gdkenna.alibaba/?spm=a261y.7663282.descBanner.29.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">應用
gdkenna.alibaba/?spm=a261y.7663282.descBanner.30.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">衝頭及沖模 | gdkenna.alibaba/?spm=a261y.7663282.descBanner.31.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">鑽頭 |
gdkenna.alibaba/?spm=a261y.7663282.descBanner.32.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">粉末冶金模具 | gdkenna.alibaba/?spm=a261y.7663282.descBanner.33.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">分條刀 |
gdkenna.alibaba/?spm=a261y.7663282.descBanner.34.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">塑膠模之嵌入模仁 | gdkenna.alibaba/?spm=a261y.7663282.descBanner.35.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">剪切刀 |
gdkenna.alibaba/?spm=a261y.7663282.descBanner.36.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">鉸刀 | gdkenna.alibaba/?spm=a261y.7663282.descBanner.37.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">滾輪 |
gdkenna.alibaba/?spm=a261y.7663282.descBanner.38.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">拉刀 | gdkenna.alibaba/?spm=a261y.7663282.descBanner.39.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">型刀 |
gdkenna.alibaba/?spm=a261y.7663282.descBanner.40.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">螺紋刀及螺絲攻 | gdkenna.alibaba/?spm=a261y.7663282.descBanner.41.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">車刀及鉋刀 |
gdkenna.alibaba/?spm=a261y.7663282.descBanner.42.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">變態溫度
Acl:1545℉(840℃)
gdkenna.alibaba/?spm=a261y.7663282.descBanner.43.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">鍛造
gdkenna.alibaba/?spm=a261y.7663282.descBanner.44.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;"> 將鋼材緩慢且均勻加熱至1900-2000℉(1040-1095℉),保溫使其內外的溫度一致,再執行鍛造。溫度低於1700℉(925℃),需回爐再預熱。鍛造完成後,鋼材應置於石灰或爐內緩慢冷卻。
gdkenna.alibaba/?spm=a261y.7663282.descBanner.45.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">退火
CPM REX M4於鍛造後及再硬化之前,必須要先做退火處理。就完全退火而言,將鋼材均勻加熱至160O℉(870℃),保溫2小時,然後以不超過每小時25℉(14℃)的冷卻速率,於爐內徐冷至1000℉(540℃)以下,之後取出空冷或繼續爐冷。
若為恆溫退火,則加熱至160O℉(870℃),保溫2小時,然後爐冷至1400℉(760℃),保溫4-6小時,之後取出空冷或繼續爐冷。退火處理應在氣氛爐或有保護性質的爐具內執行。
gdkenna.alibaba/?spm=a261y.7663282.descBanner.46.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">硬化
習慣上CPM REX M4的硬化處理,需使用二部熱處理爐。第一部爐具是用來預熱至1500-1550℉(815-845℃);第二部爐具是使其從預熱溫度迅速升溫至2150-2250℉(1175-1230℃)的硬化溫度。
若使用鹽浴爐時,常用的硬化溫度是2125-2225℉(1160-1220℃)。高溫鹽浴爐不可以同時在爐內放置過多的工件,否則會造成鹽浴溫度的劇降。
對於切削刀具應該使用硬化溫度範圍的上限溫度;至於冷作加工的衝頭及模具,需要較大的韌性,應該使用硬化溫度範圍的下限溫度。
在沒有氣氛爐或鹽浴爐時,可以使用硼砂來防止脫碳。將鋼材加熱至約300℉(l50℃),浸泡在沸騰且飽和的硼砂水溶液內,然後取出乾燥,使鋼材表面形成一層薄薄的硼砂膜,之後再執行熱處理。熱處理時使用1550℉(845℃)的預熱溫度及2150-2250℉(1175-1230℃)的硬化溫度。
gdkenna.alibaba/?spm=a261y.7663282.descBanner.47.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">淬火
淬入油中或1000-1100℉(540-595℃)的鹽浴中。當採用油淬火時,對於較大的鋼材或形狀複雜的工件,實務上是實施中斷淬火。將工件淬入油中,待冷至約1000-1100℉(540-595℃,暗紅色),立即從油中取出放在空氣中自然冷卻。
當採用鹽浴淬火時,工件淬入鹽浴中,需放置足移長的時間,以使工件冷卻至鹽浴的溫度。之後才從鹽浴取出放在空氣中自然冷卻。
通常大型工件的淬火,淬鹽浴所得到的硬度會較中斷油淬者稍低。不論以何種方法淬火,工件必需冷至15O℉(65℃)以下或能以手觸摸時,才算是完成淬火處理。
gdkenna.alibaba/?spm=a261y.7663282.descBanner.48.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">矯正
任何必須的矯正工作最好在淬火後冷卻至400℉(205℃)之前執行。最佳的矯正溫度範圍是800-400℉(425-205℃)。
gdkenna.alibaba/?spm=a261y.7663282.descBanner.49.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">回火
回火作業必需在淬火完成後立即執行,意即鋼材淬火後冷即至15O℉(65℃)或能以手觸摸時,需立刻回火。回火溫度是根據實際應用及硬度需求而定,且必需執行三次回火。範例:首先加熱至1025℉(550℃)併保溫2小時,冷卻至室溫;再加熱至1025℉(550℃)保溫2小時,同樣地冷卻至室溫;最後第三次加熱至1025℉(550℃),保溫2小時,冷卻卻至室溫。
gdkenna.alibaba/?spm=a261y.7663282.descBanner.50.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">硬度
gdkenna.alibaba/?spm=a261y.7663282.descBanner.51.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;"> |
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gdkenna.alibaba/?spm=a261y.7663282.descBanner.53.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;"> |
gdkenna.alibaba/?spm=a261y.7663282.descBanner.54.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;"> |
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gdkenna.alibaba/?spm=a261y.7663282.descBanner.56.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">衝擊韌性
因為CPM REX M4具有較細且均勻分布的碳化物,所以與傳統同類型鋼材比較,具有較細的品粒及較佳的韌性。事實上,CPM REEX M4較傳統的M2工具鋼有更佳的韌性,即使在硬度Rc64-65時,耐磨性及韌性都較傳統的M2或M3工具鋼為佳。下表所列是CPM REX M4與傳統M2工具鋼的夏氏衝擊強度(C-Notch Impact Strength)。值得注意的是,較低的硬化效果會明顯地改善CPM REX M4的衝擊韌性。
gdkenna.alibaba/?spm=a261y.7663282.descBanner.57.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;"> |
gdkenna.alibaba/?spm=a261y.7663282.descBanner.58.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">研磨性
根據現場的經驗發現,CPM REX M4高速鋼的研磨性為傳統同類型鋼材的2-3倍℃PM產品可以有效地改善其研磨性,是與其細致且均勻分布的碳化物有關。
由於CPM產品優昇的研磨特性,可以具有以下的好處:改善表面光度、使用較大的研磨速率、減少研磨破損、降低磨輪的損耗率、不需使用鑽石磨輪等等。在某些特殊場合,仍需要請教專業的研磨工程人員。
gdkenna.alibaba/?spm=a261y.7663282.descBanner.60.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">物理性質
gdkenna.alibaba/?spm=a261y.7663282.descBanner.62.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;">熱處理的尺寸變化
gdkenna.alibaba/?spm=a261y.7663282.descBanner.64.18f7128dhnneEI" style="font-family: ">
gdkenna.alibaba/?spm=a261y.7663282.descBanner.64.18f7128dhnneEI" style="font-family: ">機械加工
gdkenna.alibaba/?spm=a261y.7663282.descBanner.65.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;"> 硬度BHN225-255 |
gdkenna.alibaba/?spm=a261y.7663282.descBanner.66.18f7128dhnneEI" style="text-decoration: none; color: rgb(34, 34, 34); transition: color 0.3s ease 0s;"> 加工性大約是工具鋼W1 (1%C)的35% |