| 品名：塑膠模具鋼 | 材質：M238塑膠模具鋼 | 產地/廠傢：進口奧地利 |
| 用途：優質模具特鋼 | 倉庫：蘇州萬凱金屬 | 規格：Φ90,305（mm） |
ng>M238ng>ng>模具鋼ng>
ng>238ng>ng>介紹ng>
ng>M238ng>ng>模具鋼優質百預加硬鋼，此鋼為ng>ng>P20ng>ng>加上ng>ng>1.1%ng>ng>鎳，鋼材表麵至中心硬度均勻一致，切削良好，火花機及拋光性能極佳，適宜氣化，ng>
ng> 鍍硬鉻及鍍鈦。硬度與金相結構均勻ng>ng>,ng>ng>已經特殊熱處理加硬至ng>ng>30-34HRC,ng>ng>拋光性能良好ng>ng>,ng>ng>容易達成鏡麵磨光ng>ng>,ng>ng>使用後變形率低ng>ng>,ng>ng>且材料可用率高ng>ng>,ng>ng>可減低成本費用ng>ng>,ng>ng>用於高要求的大小塑膠模具ng>ng>,ng>ng>尤其適合電蝕操作ng>ng>.ng>
ng> 出廠狀態：預加硬至ng>ng>980-1080N/mm²(30-34HRC)ng>
ng> 鋼已經熱處理，硬度均勻，達ng>ng>278-311HB,29-33HRC,ng>ng>制成工模永不變型，切削性能及拋光性能優異，ng>ng>適合電蝕操作，可作火焰加硬，表麵鍍鉻及氮化處理。ng>
ng>用途及常用規格ng>
ng> 用途：適合高要求的塑膠模具，尤其是超過ng>ng>400MMng>ng>厚之模具。ng>
ng> 尺寸規格：圓形（ng>ng>MMng>ng>）ng>
ng>25.8 30.8 32.8 40.8 45.8 50.8 55.8 60.8 66.0 71.0 76.0 81.0 86.0 91.0 101.5ng>
ng>106.5 116.5 126.5 141.5 151.5 182.0 202.0 232.0 262.5 282.5 302.5 363.0 403.0ng>
ng> 方形（ng>ng>MMng>ng>）ng>
ng>25323540455060708090105ng>
ng> 扁形（ng>ng>MMng>ng>）ng>
ng>8020-25-32-35-40-45-50-60-65-70ng>
ng>105X20-25-32-35-40-45-50-60-65-70-80ng>
ng>13020-25-32-35-40-45-50-60-65-70-80-90-105ng>
ng>155X20-25-32-35-40-45-50-60-65-70-80-90-18020-25-32-35-40-45-50-60-65-70-80ng>
ng>21020-25-32-35-40-45-50-60-65-70-80-90-105ng>
ng>23020-25-32-35-40-45-50-60-65-70-80ng>
ng>26020-25-32-35-40-45-50-60-65-70-80-90-105ng>
ng>31020-25-32-35-40-45-50-60-65-70-80-90-105ng>
ng>42020-25-32-35-40-45-50-60-65-70-80-90-105-115-130-140-155ng>
ng>62020-25-32-35-40-45-50-60-65-70-80-180-210-230ng>
ng>70020-25-32-35-40-45-50-60-65-70-80-260-310-360ng>
ng>化學成分ng>
ng> 碳ng>ng>Cng>ng>：ng>ng>0.95ng>
ng> 鉻ng>ng>Cr;0.5ng>
ng> 鎢ng>ng>wng>ng>：ng>ng>0.5ng>
ng> 錳ng>ng>Mnng>ng>：ng>ng>1.1ng>
ng> 矽ng>ng>Sing>ng>：ng>ng>0.3ng>
ng> 釩ng>ng>Vng>ng>：ng>ng>0.1ng>
ng>熱處理工藝ng>
ng> 鍛制：ng>ng>1050-850℃ng>ng>爐中冷卻。ng>ng>回質：ng>ng>850-900℃ng>ng>爐中冷卻。ng>
ng> 應力ng>ng>消ng>ng>除：熱度均勻後，停留ng>ng>1-2ng>ng>小時於爐中冷卻。ng>
ng> 淬火：油ng>ng>840-860℃ng>ng>或空氣：ng>ng>860-880℃ng>ng>。停留最少ng>ng>10ng>ng>分鐘，於厚度多於ng>ng>20mmng>ng>見每ng>ng>1mmng>ng>多ng>ng>1/2ng>ng>分鐘，所以硬度約ng>ng>54HRCng>ng>。ng>
ng> 回火：回火時停留最少ng>ng>1ng>ng>小時，ng>ng>20mmng>ng>厚以上的每多ng>ng>20mmng>ng>則要多ng>ng>1ng>ng>小時。ng>
ng> 退火：ng>ng>720-740℃ng>ng>熱透保溫足夠時間，再隨爐降溫至ng>ng>600℃ng>ng>，然後在空氣中冷卻，所得硬度約為ng>ng>240HBng>ng>（最高）。ng>
ng> ng>
ng> ng>
ng> ng>
ng>蘇州工業園區萬凱金屬制品有限公司ng>
ng>電話：ng>ng>0512-65076186 65078186ng>
ng>傳真：ng>ng>0512-65077686ng>
ng>Q Qng>ng>：ng>ng>2217139058 656669099ng>
ng>網址ng>：ng>http://www.szwkjs.comng>
ng>地址：蘇州工業園區唯亭鎮跨南路ng>ng>2ng>ng>號ng>
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