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Method and device for improving magnesium absorption rate in nodular cast iron spheroidizing process

A technology of absorption rate and process, applied in the field of nodular cast iron spheroidization process, can solve the problems of increasing production cost, magnesium waste, low magnesium absorption rate, etc., and achieve the effect of increasing floating resistance, reducing escape, and improving magnesium absorption rate

Inactive Publication Date: 2020-01-21
XINXING DUCTILE IRON PIPES CO LTD
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  • Claims
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Problems solved by technology

In the nodular cast iron spheroidizing process, due to the influence of temperature, pressure and other factors, when magnesium powder is poured into the molten iron, the magnesium powder escapes more from the molten iron after gasification, resulting in a lower absorption rate of magnesium, resulting in the loss of magnesium. waste, increase production cost

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  • Method and device for improving magnesium absorption rate in nodular cast iron spheroidizing process
  • Method and device for improving magnesium absorption rate in nodular cast iron spheroidizing process
  • Method and device for improving magnesium absorption rate in nodular cast iron spheroidizing process

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Embodiment Construction

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] The method for improving the magnesium absorption rate in a kind of nodular cast iron spheroidizing process provided by the invention is now described.

[0040] A method for improving the magnesium absorption rate in a nodular cast iron spheroidizing process, comprising the following steps:

[0041] a. Before the molten iron is spheroidized, adjust the molten iron in the intermediate frequency furnace to the range required by the process, and then tap the iron;

[0042] b. Transfer the temperature-adjusted molten iron from the intermediate frequency furnace...

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Abstract

The invention provides a method and device for improving the magnesium absorption rate in a nodular cast iron spheroidizing process, and belongs to the technical field of nodular cast iron spheroidizing processes. The method includes the following steps that a, the temperature of molten iron is controlled; b, the molten iron is injected into a spheroidizing ladle; c, a spray gun is inserted into the spheroidizing ladle, and the insertion depth of the spray gun is adjusted; d, a ladle barrel and a ladle cover of the spheroidizing ladle are locked; and e, a spheroidizing agent is sprayed into the molten iron, and the spray pressure and the spray speed of the spray gun are adjusted. By means of the method for improving the magnesium absorption rate in the nodular cast iron spheroidizing process, in the spheroidizing reacting process, escape of magnesium bubbles in the molten iron is reduced, the magnesium absorption rate is increased, the magnesium waste is reduced, and the production cost is saved. The invention also provides a device for improving the magnesium absorption rate in the nodular cast iron spheroidizing process.

Description

technical field [0001] The invention belongs to the technical field of nodular cast iron spheroidization process, more specifically, relates to a method and a device for improving the magnesium absorption rate in a nodular cast iron spheroidization process. Background technique [0002] At present, in the production process of ductile iron pipes, the molten iron needs to be spheroidized before casting, so as to realize the transformation of crystal phase and structure in the centrifugal casting process. In the nodular cast iron spheroidizing process, due to the influence of temperature, pressure and other factors, when magnesium powder is poured into the molten iron, the magnesium powder escapes more from the molten iron after gasification, resulting in a lower absorption rate of magnesium, resulting in the loss of magnesium. waste and increase production costs. Contents of the invention [0003] The object of the present invention is to provide a kind of method that impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C1/10C22C33/12C22C37/04
CPCC21C1/105C22C33/12C22C37/04
Inventor 钟军超陈建波
Owner XINXING DUCTILE IRON PIPES CO LTD
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