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陶瓷复合钢管性能表

陶瓷钢管具体性能。
 
表一、陶瓷钢管的物理机械性能 。
 
硬度
HV
Kgf/mm2
压溃
强度①
MPa
比重
g /cm3
抗抗剪切
强度②
MPa
绝对
粗造度
mm
线膨胀
系数③
×10-6K-1
陶瓷钢管
1100-1400
350-400
4.6-4.7含过渡层
15
Dn≤150为0.35
Dn >150为0.12
8.5-9
20#碳钢管
149
411
7.85
hfgh
新的0.05-0.1
旧的0.4-0.6
14-15
注:无缝钢管厚8mm,陶瓷层和过渡层总厚度2.5-3.5mm,从管外把管内陶瓷压碎时的强度。
   在陶瓷钢管轴向把陶瓷层从无缝钢管内压出时的强度。
   温度范围-30~~500℃.
表二、陶瓷钢管抗热冲击性能和抗机械冲击性能。www.JH-YD.com
材料
抗机械冲击数①
抗热冲击出现裂纹的淬水次数②
200℃
300℃
450℃
700℃
1000℃
1100℃
陶瓷钢管
15次以上
10次以上
9次
6次
5次
3次
1次出现小裂纹和剥落
耐热陶瓷
1次即碎
2次
1次即碎
1次即碎
1次即碎
1次即碎
1次即碎
注:①陶瓷钢管总厚度9mm,机械能50J,点接触管体内陶瓷层生产裂纹的冲击次数。
   ②在各给定温度下加热5分钟淬水,再加热再淬水…… www.JH-YD.com
表三、输送铁矿精粉耐磨对比试验。
材料
时间
磨损掉尺寸mm
平均年磨损率mm/a
平均年磨损率比值
陶瓷钢管
1994年4月~1997年4月
0.12
0.04
 
 
20#碳钢管
1994年~1997年4月
翻身一次换管一次共21mm
7
注:①该矿重选车间管道,矿石粒度〈2mm重量浓度30%。文章来自www.jh-yd.com
   ②陶瓷钢管外径φ219,厚8mm,陶瓷层厚4mm,20#碳钢管厚9mm。
   ③此对比试验目前仍在继续进行,比值175只是根据三年实践的推算数据。
表四、火电厂送粉管路不同材质弯管对比试验
材料
规格
工况
使用说明
20#碳钢管
DN350×10
10 万KW机组,使用煤碳灰达45%,每管每小时送粉42吨
11个月磨穿
高铬合金铸钢管
DN350×25
11个月磨穿
夹套式铸石管
DN350×55
使用23个月磨穿
陶瓷钢管
DN350×14
使用24个月磨损掉0.2mm
表五、火电厂气力除灰管路不同材料弯管对比试验,建湖远达
材料
规格
工况
使用说明
20#碳钢管
DN150×10
 
气力输送干灰,74吨/时,流速20m/s,浓度28%,位置在进灰度拐弯处。
3个月磨穿
高铬合金铸钢管
DN150×20
5个月磨穿
夹套式铸石管
DN150×50
使用12个月磨穿
陶瓷钢管
DN150×11
使用12个月磨损掉0.15mm
表六、陶瓷钢管耐蚀性(按不锈钢测试标准,30天,室温)
 
10%
HCL
g/m2*h
10%
HNO3
g/m2*h
10%
H2SO4
g/m2*h
10%
H3PO4
g/m2*h
10%
C2H4O2
g/m2*h
10%
HF
g/m2*h
10%
NaOH
g/m2*h
10%
NaCl
g/m2*h
陶瓷钢管
0.056
0.032
0.021
0.047
0.022
0.42
-0
-0
不锈钢
1Cr18Ni9Ti
>1
0.1
1.8
<0.1
<0.1
-
0.1
-
表七、陶瓷钢管在各种浓度硫酸中耐蚀性(30天,室温)
硫酸浓度
10%
20%
30%
40%
50%
60%
70%
80%



晶介腐蚀速度
mm/a
<0.1
<0.1
1.2
3.6
1.8
<0.1
<0.1
<0.1
失重
g/m2*h
0.021
...
...
0.04
...
...
...
...


晶介腐蚀速度
mm/a
0.021
...
...
0.04
5.0
...
...
0.46
失重
g/m2*h
1.8
...
...
...
4.6
...
...
0.42

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