Qingyun Hongsheng Machinery Parts Co., Ltd. is one of the most reliable manufacturers and suppliers of heat-resistant cast iron grate bar in China. We warmly welcome you to wholesale high quality heat-resistant cast iron grate bar at low price from our factory. If you have any enquiry about quotation, please feel free to email us.
HEAT-RESISTANT CAST IRON GRATE BAR
The advantages of heat-resistant cast iron grate strip mainly include oxidation resistance, growth resistance, high wear resistance, impact resistance, deformability and weldability.
Heat-resistant cast iron grate strip shows excellent performance in high temperature environment due to its unique material and design. First, heat-resistant cast iron has oxidation resistance and growth resistance, which allows the grate strip to remain stable under constant high temperature without damage caused by oxidation. Secondly, the wear resistance of the refractory cast iron grate strip is very high, because the carbon content and chromium content in the chemical composition of the alloy layer are relatively high, the carbide wear phase is vertically distributed, and the wear resistance is more than twice that of the cast alloy. In addition, the heat-resistant cast iron grate strip also has impact resistance, deformation and weldability, can be directly processed like steel plate edge deformation, cutting, punching, the service life can be increased by 5-10 times. These characteristics make the heat-resistant cast iron grate strip become an indispensable part in the industrial grate and furnace floor and other fields, its excellent high temperature resistance and stable and reliable performance, make it can play an excellent performance in a variety of high temperature environment
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Grade and chemical composition of heat-resistant cast iron |
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铸铁牌号 |
化学成分(质量分数,%) |
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C |
Si |
Mn |
P |
S |
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不大于 |
Cr |
Al |
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RTCr |
3.0-3.8 |
1.5-2.5 |
1.0 |
0.10 |
0.08 |
0.50-1.00 |
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RTCr2 |
3.0-3.8 |
2.0-3.0 |
1.0 |
0.10 |
0.08 |
>1.00-2.00 |
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RTCr16 |
1.6-2.4 |
1.5-2.2 |
1.0 |
0.10 |
0.05 |
15.00-18.00 |
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RTSi5 |
2.4-3.2 |
4.5-5.5 |
0.8 |
0.10 |
0.08 |
0.5-1.00 |
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RQTSi4 |
2.4-3.2 |
3.5-4.5 |
0.7 |
0.07 |
0.015 |
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RQTSi4Mo |
2.7-3.5 |
3.5-4.5 |
0.5 |
0.07 |
0.015 |
Mo0.3-0.7 |
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RQTSi4Mol |
2.7-3.5 |
4.0-4.5 |
0.3 |
0.05 |
0.015 |
Mol.0-1.5 |
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RQTSi5 |
2.4-3.2 |
>4.5-5.5 |
0.7 |
0.07 |
0.015 |
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RQTAl4Si4 |
2.5-3.0 |
3.5-4.5 |
0.5 |
0.07 |
0.015 |
4.0-5.0 |
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RQTAl5Si5 |
2.3-2.8 |
>4.5-5.2 |
0.5 |
0.07 |
0.015 |
>5.0-5.8 |
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RQTAl22 |
1.6-2.2 |
1.0-2.0 |
0.7 |
0.07 |
0.015 |
|
20.0-24.0 |
due to the long malleable annealing time (see ferrite malleable iron, pearl malleable iron and white heart malleable iron).
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