Nodulizing agent for nodular cast iron and preparation method thereof
A technology of nodular cast iron and nodularizers, which is applied in the field of nodularizers for nodular cast iron and its preparation, can solve the problems of unstable structure density of nodularizers, low absorption rate of effective elements, environmental pollution, etc., and achieve good social benefits The effect of improving the effective utilization rate and reducing the cost of use with economic benefits
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[0018] Example 1
[0019] This example is a spherocic agent for ductile iron, including Si: 40% by weight, RE: 2.5 wt%, mg: 7.5 wt%, Ca: 2% WT, Fe: 44% WT, CE: 4% WT.
[0020] The preparation method of a spheroidizing agent for the ink cast iron, including the following steps:
[0021] Step 1, the spherulating agent smelting: first add Mg, Si, and generate MG-Si phase after melting Mg, and is formed in a mg-Si phase in the smelting and casting process, achieving the effect of reducing mg oxidation burning; At the beginning of the melting, the medium band power is transferred to 160 kW. It is completely melted by the MG ingot. The power is adjusted to 100kw; 5 minutes after the furnace begins to brazing; after the furnace is completely melted, the insertion is stopped, then the stirring is started, until the granular Si, Fe, CE is completely melted, and the melting time of each furnace is controlled at 45min, and the metal solution is obtained;
[0022] Step 2: Pouring: Before the ...
Example Embodiment
[0029] Example 2
[0030] In this example, a spherocic agent for ductine cast iron comprising Si: 44 wt%, RE: 2.5 wt%, mg: 8.5 wt%, CA: 1% WT, Fe: 42% WT, CE: 2% WT.
[0031] The preparation method of a spheroidizing agent for the ink cast iron, including the following steps:
[0032] Step 1, the spherulating agent smelting: first add Mg, Si, and generate MG-Si phase after melting Mg, and is formed in a mg-Si phase in the smelting and casting process, achieving the effect of reducing mg oxidation burning; At the beginning of the melting, the medium band power is transferred to 160 kW. It is completely melted by the MG ingot. The power is adjusted to 100kw; 5 minutes after the furnace begins to brazing; after the furnace is completely melted, the insertion is stopped, then the stirring is started, until the granular Si, Fe, CE is completely melted, and the melting time of each furnace is controlled at 45min, and the metal solution is obtained;
[0033] Step 2: Pouring: Before the c...
Example Embodiment
[0040] Example 3
[0041] This example is a spherocic agent for ductile iron, including Si: 43 wt%, RE: 4.0% by weight, mg: 8 wt%, Ca: 1% wt, Fe: 40% wt, CE: 4% WT.
[0042] The preparation method of a spheroidizing agent for the ink cast iron, including the following steps:
[0043] Step 1, the spherulating agent smelting: first add Mg, Si, and generate MG-Si phase after melting Mg, and is formed in a mg-Si phase in the smelting and casting process, achieving the effect of reducing mg oxidation burning; At the beginning of the melting, the medium band power is transferred to 160 kW. It is completely melted by the MG ingot. The power is adjusted to 100kw; 5 minutes after the furnace begins to brazing; after the furnace is completely melted, the insertion is stopped, then the stirring is started, until the granular Si, Fe, CE is completely melted, and the melting time of each furnace is controlled at 45min, and the metal solution is obtained;
[0044] Step 2: Pouring: Before the ca...
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