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铬合金铸球
1.尺寸及允许的偏差、外形
|
直径（mm) |
Φ<30 |
30<Φ<60 |
60<Φ<80 |
80<Φ<100 |
Φ>100 |
|
直径公差(mm) |
+1，-1 |
+1.5，-1 |
+2,-1 |
+2.5，-1 |
+3，-1 |
2.化学成分
|
名称 |
牌号 |
化学成分（%） |
||||||||
|
C |
Si |
Mn |
Cr |
Mo |
Cu |
Ni |
P |
S |
||
|
铬合金铸铁球 |
ZQCr26 |
2.0-3.3 |
1.2max |
0.3-1.5 |
>23.0-30.0 |
0-3.0 |
0-1.2 |
0-1.5 |
≤0.10 |
≤0.06 |
|
ZQCr20 |
2.0-3.3 |
1.2max |
0.3-1.5 |
>18.0-23.0 |
0-3.0 |
0-1.2 |
0-1.5 |
≤0.10 |
≤0.06 |
|
|
ZQCr15 |
2.0-3.3 |
1.2max |
0.3-1.5 |
>14.0-18.0 |
0-3.0 |
0-1.2 |
0-1.5 |
≤0.10 |
≤0.06 |
|
|
ZQCr12 |
2.0-3.3 |
1.2max |
0.3-1.5 |
>10.0-14.0 |
0-3.0 |
0-1.2 |
0-1.5 |
≤0.10 |
≤0.06 |
|
|
ZQCr8 |
2.1-3.3 |
2.2max |
0.3-1.5 |
7.0-10.0 |
0-1.0 |
0-0.8 |
－ |
≤0.10 |
≤0.06 |
|
|
ZQCr5 |
2.1-3.3 |
1.5max |
0.3-1.5 |
4.0-6.0 |
0-1.0 |
0-0.8 |
－ |
≤0.10 |
≤0.10 |
|
|
ZQCr2 |
2.1-3.6 |
1.5max |
0.3-1.5 |
1.0-3.0 |
0-1.0 |
0-0.8 |
－ |
≤0.10 |
≤0.10 |
|
3.技术规范
|
名称 |
牌号 |
直径(mm) |
硬度(HRC) |
破碎率 |
冲击值(J/cm²) |
落球次数 |
金相组织 |
|
铬合金铸铁球 |
ZQCr26 |
17-150 |
>58 |
<1% |
>7 |
≥12000 |
M+C |
|
ZQCr20 |
17-150 |
>58 |
<1% |
>6 |
≥12000 |
M+C |
|
|
ZQCr15 |
17-150 |
>58 |
<1% |
>5 |
≥12000 |
M+C |
|
|
ZQCr12 |
17-150 |
>58 |
<1% |
>3.5 |
≥12000 |
M+C |
|
|
ZQCr8 |
17-150 |
>58 |
<1% |
>3 |
≥12000 |
M+C |
|
|
ZQCr5 |
17-150 |
>47 |
<1% |
>2 |
≥10000 |
M+C |
|
|
ZQCr2 |
17-150 |
>45 |
<1% |
>1.5 |
≥8000 |
P+C |