| ■ 材料選擇 |
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工作輥
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| 我們對Sendzimir 工作輥材料選擇的研究及建議如下: |
適用輥輪 |
鋼材種類 |
硬度 |
材料特性 |
工作輥 |
KRD2(12% Cr 工具鋼) |
60~64 HRC |
耐磨性佳適用於一般工輥 |
工作輥 |
KRM1 KRM2KRM7 KRM42(高速鋼) |
62~67 HRC |
壓出更亮麗更薄的鋼板,更強的耐磨損性及抗熱震性常用於BA板之壓延 |
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| 中間輥 |
| 我們對材料選擇的研究及建議如下: |
適用輥輪 |
鋼材種類 |
硬度 |
材料特性 |
中間輥 |
KRD2(12% Cr) |
58~62 HRC |
適用於中間輥抗壓性強,因高熱震使輥輪硬度增加時,會產生剝落及裂痕 |
中間輥 |
KRH12KRA8(modified)5%Cr模具鋼 |
58~62 HRC |
極佳韌性及抗熱震性,為防止輥輪在運轉中,因高熱震產生剝落與裂痕之首選材料 |
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| ■ 化學成份 |
| KRM1 |
Grade |
Chemical Composition, wt% |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
W |
V |
Ni+Cu |
Co |
KRM1 |
0.78~0.88 |
0.2~0.5 |
0.15~0.4 |
0.03max |
0.005max |
3.5~4.0 |
8.20~9.2 |
1.4~2.1 |
1.00~0.35 |
0.75max |
0.06max |
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| 硬度: 62~65 HRC |
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| KRM2 |
Grade |
Chemical Composition, wt% |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
W |
V |
Ni+Cu |
KRM2 |
0.78~0.88 |
0.2~0.45 |
0.15~0.40 |
0.03max |
0.005max |
3.75~4.50 |
4.50~5.50 |
5.50~6.70 |
1.75~2.2 |
0.75~2.2 |
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| 硬度: 62~65 HRC |
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| KRM7 |
Grade |
Chemical Composition, wt% |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
W |
V |
KRM7 |
0.97~1.05 |
0.20~0.55 |
0.15~0.40 |
0.03max |
0.005max |
3.50~4.00 |
8.20~9.20 |
1.40~2.10 |
1.75~2.25
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| 硬度: 62~67 HRC |
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| KRM42 |
Grade |
Chemical Composition, wt% |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
W |
V |
Co |
KRM42 |
1.05~1.15 |
0.15~0.65 |
0.15~0.4 |
0.03max |
0.005max |
3.5~4.25 |
9.00~10.0 |
0.95~1.35 |
1.00~1.35
|
0.75max |
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| 硬度: 65~68 HRC |
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| KRD2 |
Grade |
Chemical Composition, wt% |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
KRD2 |
1.40~1.60 |
0.40under |
0.60under |
0.03max |
0.005max |
11under |
0.80~1.20 |
0.20~0.50
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| 硬度: 60~63 HRC |
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| KRH12 |
Grade |
Chemical Composition, wt% |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
W |
V |
Ni+Cu |
KRH12 |
0.30~0.40 |
0.80~1.25 |
0.20~0.60 |
0.03max |
0.005max |
4.75~5.50 |
1.25~1.75 |
1.00~1.70 |
0.20~0.50 |
0.75max |
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| 硬度: 58~60 HRC |
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| TOP |