Chilling agent

A chiller, weight percentage technology, applied in the field of chiller, can solve problems such as difficult to find eutectic temperature

Active Publication Date: 2014-07-16
南京钢铁集团盛达实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the solidification process of gray cast iron, it is difficult to find the exact eutectic temperature due to the influence of the inoculation status of the molten iron and the crystallization conditions.

Method used

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  • Chilling agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1, the chiller includes the following components, by weight percentage, tellurium 45%, aluminum 20%, titanium 10%, iron 25%, and the above-mentioned components are made into particles of 0.5-1.5 mm and then uniformly mixed to form the chiller. refrigerant.

Embodiment 2

[0011] Embodiment 2, the chiller includes the following components, by weight percentage, tellurium 55%, aluminum 30%, titanium 10%, iron 5%, and the above-mentioned components are made into particles of 0.5-1.5 mm and then uniformly mixed to form the chiller. refrigerant.

Embodiment 3

[0012] Embodiment 3, the chiller includes the following components, by weight percentage, tellurium 50%, aluminum 30%, titanium 10%, iron 10%, the above-mentioned components are made into particles of 0.5-1.5 mm and then uniformly mixed to form the chiller. refrigerant.

[0013] Spread the chiller evenly on the bottom of the thermal analysis sample cup to measure the addition of molten iron in the thermal analysis sample cup.

[0014] Such as figure 1 As shown, after using the chiller provided in Example 3 to detect both sides of the molten iron with different components, the CE, C, Si value data and their comparison with the results of the chemical analysis of the same molten iron can be seen The accuracy of the measurement results after the invention is used is high, and the measurement stability is good.

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Abstract

The invention relates to a chilling agent which comprises the following components in percentage by weight: 45-55% of tellurium, 20-30% of aluminum, 10% of titanium and the balance of iron. After being prepared into 0.5-1.5mm particles, all the above components are uniformly mixed to form the chilling agent. The chilling agent provided by the invention can promote hypo-eutectic or hypereutectic molten iron which is inoculated or not inoculated to be solidified according to white cast, so as to display a long eutectic stopping platform on a cooling curve, and thus accurate CEL, C and Si values can be obtained.

Description

technical field [0001] The present invention relates to a chiller. Background technique [0002] Cast iron is an iron-carbon alloy with eutectic transformation. When the molten iron is poured into the thermal analysis sample cup, the molten iron with a certain composition undergoes a phase change during cooling and solidification, releasing the latent heat of crystallization, and the cooling curve changes. The eigenvalues ​​conform to certain rules, so the carbon equivalent, carbon content and silicon content of cast iron can be determined according to the eigenvalues ​​on the cooling curve. The thermal analysis sample cup uses this thermal effect to analyze the CEL, C, Si and related characteristics of cast iron by measuring the primary crystal temperature and eutectic temperature point of the cooling curve during the solidification process. [0003] During the solidification process of gray cast iron, it is difficult to find the accurate eutectic temperature due to the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/08C21C1/08
Inventor 吴万奋
Owner 南京钢铁集团盛达实业有限公司
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