DHA1耐高溫熱作壓鑄模具鋼

• 規(guī)格：齊全
• 產(chǎn)地：其他-國產(chǎn)進口

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DHA1耐高溫熱作壓鑄模具鋼

DHA1熱作壓鑄模具鋼具有優(yōu)良的淬透性，抗高溫回火軟化性強，耐高溫沖擊的抗熱疲勞性以及好的抗高溫熔損性。

DHA1的特點

1. 細小球狀碳化物均勻分布

2. 良好的耐熱平衡性與淬透性出

3. 抗高溫回火軟化性強

4. 耐高溫沖擊和熱疲勞性優(yōu)異

5. 抗高溫熔損性強6. 良好的切削性

DHA1用途:

1.鋁鋅壓鑄模

2.鋁熱擠壓鑄

3.沖壓模

4.壓鑄模部件

5.塑膠模

6.諸機械部件

鋁、鋅壓鑄模：使用硬度HRC41～48；

模具附件(柱塞套筒、沖頭等)：使用硬度HRC45～50；

熱擠壓模：使用硬度HRC43～48；

熱剪切刀片：使用硬度HRC35～45；

熱沖壓模：使用硬度HRC42～50；

化學成分

: 大同鋼號DHA1 JIS相應鋼號SKD61

C 0.32～0.42

Si 0.80～0.10

Mn ≤0.5

Cr 4.50～5.50

Mo 1.00～1.50

V 0.80～1.20

熱處理工藝

該鋼的鍛造溫度為1100~900℃,

退火溫度為820~870℃,緩冷，退火硬度≤229HB；

淬火溫度為1000~1050℃,空冷；

回火溫度為550~650℃，空冷。

淬火回火后硬度≤53HRC。相應的相變點為：Ac為847~918℃；Ar為769~725℃；1030℃奧氏體化后的Ms為320℃。

該鋼1050℃奧氏體化油冷的淬火硬度可達55HRC，此時的夏氏沖擊值保持在較高水平（經(jīng)600℃1hr回火）；淬火后在560℃回火1hr硬度能達到峰值，接近55HRC，經(jīng)600℃回火1hr硬度為50HRC左右。 　 該鋼可施行570℃×3hr的鹽浴滲氮處理，可使表面硬度高達1100HV（載荷300g）。

DH31-S鋼的淬透性，耐熱疲勞開裂性和耐熱熔模性均高于DHA-1。按介紹資料估算，DHA-1鋼1030℃奧氏體化，φ150mm圓棒空冷可淬得馬氏體組織；對DJ31~S鋼同樣條件可達φ200mm左右。該鋼退火后硬度≤235HB，切削加工性相對SKD61稍有降低。

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DHA1價格DHA1圓鋼價格DHA1鋼板價格DHA1現(xiàn)貨價格DHA1批發(fā)價格

DHA1價格DHA1圓鋼價格DHA1鋼板價格DHA1現(xiàn)貨價格DHA1批發(fā)價格

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