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Hot metal square thermal analysis sample cup special for high-carbon equivalent

A high carbon equivalent, thermal analysis technology, applied in material thermal analysis, analytical materials, measuring devices, etc., can solve problems such as difficulty in finding eutectic temperature

Inactive Publication Date: 2019-07-09
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

[0004] During the solidification process of high carbon equivalent cast iron, it is difficult to find the accurate eutectic temperature due to the influence of molten iron stabilized pearlite alloy elements, inoculation conditions and crystallization conditions.

Method used

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  • Hot metal square thermal analysis sample cup special for high-carbon equivalent
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The chiller 3 is composed of the following components by weight: 7 parts of tellurium, 0.5 parts of aluminum, 0.5 parts of titanium, and 1 part of sulfur. The above components are made into 0.5-1.5 mm particles and uniformly mixed to form the chiller.

Embodiment 2

[0017] The chiller 3 is composed of the following components, by weight, 8 parts of tellurium, 1 part of aluminum, 1 part of titanium, and 2 parts of sulfur. The above-mentioned ingredients are made into 0.5-1.5mm particles and uniformly mixed to form the chiller.

Embodiment 3

[0019] The chiller 3 is composed of the following components, by weight, 7.5 parts of tellurium, 0.8 parts of aluminum, 0.58 parts of titanium, and 1.5 parts of sulfur. The above-mentioned ingredients are made into 0.5-1.5 mm particles and uniformly mixed to form the chiller.

[0020] In the present invention, anti-graphitization materials and oxidized alloy components (ie, the components contained in the chiller 3 in the present invention) are added in the sample cup to be used as a chiller to promote whether the molten iron is hypoeutectic or hypereutectic, Regardless of whether it has been inoculated or not, it can solidify according to the white mouth, and shows a long eutectic stop platform on the cooling curve, so as to obtain accurate CEL, C, and Si values.

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Abstract

The invention discloses a hot metal square thermal analysis sample cup special for high-carbon equivalent. The hot metal square thermal analysis sample cup comprises a cup body, a thermocouple and a chilling agent, wherein the thermocouple is fixed in the cup body, the chilling agent is fixed on the bottom surface of the inner cavity of the cup body and composed of the following components of by weight, 7-8 parts of tellurium, 0.5-1 part of aluminum, 0.5-1 part of titanium and 1-2 parts of sulfur, and the above components are uniformly mixed after making 0.5-1.5 mm particles to form the chilling agent. The chilling agent in the invention can promote that the molten iron whether it is hypoeutectic or hypereutectic and whether it is subjected to inoculation treatment can be solidified by white mouth, and shows a long eutectic stop platform on the cooling curve, thereby obtaining accurate CEL, C and Si values.

Description

technical field [0001] The invention relates to a special high carbon equivalent molten iron square thermal analysis sample cup. Background technique [0002] The special square thermal analysis sample cup for high carbon equivalent hot metal (also known as fixed carbon square cup, pouring sample square cup) is widely used for on-site control of high carbon equivalent hot metal composition because of its fast, simple, reliable and low cost. It is designed Reasonable square-shaped cup body, high-precision thermocouple and chiller. [0003] Cast iron is an iron-carbon alloy with eutectic transformation. When the molten iron is poured into the sample cup, the molten iron with a certain composition undergoes a phase change during the cooling and solidification process to release the latent heat of crystallization, and the cooling curve changes. The eigenvalues ​​on the cooling curve obtained It conforms to certain rules, so the carbon equivalent, carbon content and silicon cont...

Claims

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Application Information

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IPC IPC(8): G01N25/14
CPCG01N25/147
Inventor 吴万奋
Owner 南京钢铁集团盛达实业有限公司
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