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Magnesium cored wire for vermicularization treatment and utilization method of cored wire

A technology of cored wire and core body, which is applied in the field of magnesium cored wire for creep treatment, and can solve the problems of violent tumbling and splashing of molten steel

Inactive Publication Date: 2019-12-13
SINO TRUK JINAN POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of violent tumbling and serious splashing of molten steel after using the existing magnesium cored wire, the present invention provides a magnesium cored wire for creeping treatment and its use method. The magnesium content and calcium content of the magnesium cored wire Appropriate, less splashing of molten iron during the reaction process, uniform and stable components of molten iron obtained, good metallographic structure of castings, and mechanical properties meeting the requirements of RuT450 standard

Method used

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  • Magnesium cored wire for vermicularization treatment and utilization method of cored wire

Examples

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Effect test

Embodiment 1

[0022] A magnesium cored wire for creep treatment, the magnesium cored wire includes a core and a steel strip wrapped around the core, the core weighs 230g, and the core includes the following raw materials:

[0023] 38g of magnesium, 105g of silicon, 7g of rare earth elements, 6g of calcium, 18g of carbon and 56g of iron, wherein the rare earth elements include 2g of lanthanum, 1g of cerium, 1g of praseodymium and 3g of neodymium, and the particle size of each raw material is 0.125mm.

Embodiment 2

[0025] A magnesium cored wire for creep treatment, the magnesium cored wire includes a core and a steel strip wrapped around the core, the core weighs 300g, and the core includes the following raw materials:

[0026] 50g of magnesium, 170g of silicon, 20g of rare earth elements, 13g of calcium, 33g of carbon and 14g of iron, wherein the rare earth elements include 5g of lanthanum, 5g of cerium, 5g of praseodymium and 5g of neodymium, and the particle size of each raw material is 0.175mm.

Embodiment 3

[0028] A magnesium cored wire for creep treatment, the magnesium cored wire includes a core and a steel strip wrapped around the core, the core weighs 275g, and the core includes raw materials of the following weight:

[0029] 46g of magnesium, 125g of silicon, 12g of rare earth elements, 15g of calcium, 27g of carbon and 50g of iron, wherein the rare earth elements include 1g of lanthanum, 3g of cerium, 4g of praseodymium and 4g of neodymium, and the particle size of each raw material is 0.15mm.

[0030] Select the magnesium cored wire produced in Example 3, adopt a supporting wire feeding treatment station, and 2 tons of special treatment bags for vermisification treatment, and the molten iron is directly poured into the special treatment bag for vermisification treatment, then transfer the vermisification treatment bag to the treatment station, and transfer to the iron After adding an appropriate amount of pretreatment agent in the water, add magnesium cored wire and support...

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Abstract

The invention relates to the technical field of metallurgical auxiliary materials, in particular to a magnesium cored wire for vermicularization treatment and a utilization method of the cored wire. The magnesium cored wire comprises a core body and a steel strip wrapping the core body, wherein the core body comprises magnesium, silicon, rare earth elements, calcium, carbon and iron. The utilization method of the magnesium cored wire comprises the step of adding 3-5 m magnesium cored wire to per ton of molten iron. The magnesium cored wire has proper magnesium content and calcium content, lessmolten iron splashing in the reaction process, uniform and stable molten iron composition and good casting metallographic structure, and has mechanical properties meeting the requirements of RuT450 standards.

Description

technical field [0001] The invention relates to the technical field of metallurgical auxiliary materials, in particular to a magnesium cored wire for creep treatment and a method for using the same. Background technique [0002] Core-spun wire is a kind of wire-shaped material used in refining molten steel. It can purify molten steel, change the shape of inclusions, improve the castability and mechanical properties of molten steel, and can significantly increase the yield of alloying elements, reduce the Steelmaking costs. [0003] In the field of casting production, the magnesium cored wire is composed of steel strip and magnesium powder wrapped in the steel strip. The magnesium content in the magnesium cored wire will directly affect the stability of the processing reaction process, the degree of molten iron splashing, Residual magnesium content after reaction, metallographic structure, mechanical properties and processing properties of castings. The magnesium content of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/00
CPCC21C7/0056
Inventor 杨涛曹月山
Owner SINO TRUK JINAN POWER