Heat-resistant medium-chromium vermicular graphite cast iron glass mold material and preparation method thereof

A glass mold material, vermicular graphite cast iron technology, applied in the direction of improving process efficiency, etc., can solve the problems of short service life, insufficient thermal deformation resistance and oxidation resistance, low wear resistance and heat resistance, and achieve improvement Effect of service life, improvement of thermal deformation resistance and oxidation resistance, high wear resistance and heat resistance

Inactive Publication Date: 2019-08-02
CHENGDU XINZHI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the problems of insufficient thermal deformation resistance, oxidation resistance and short service life of the glass mold due to the low hardness, wear resistance and heat resistance of the vermicular graphite cast iron glass mold material in the prior art, the present invention provides A kind of heat-resistant medium chromium vermicular graphite cast iron glass mold material and preparation method thereof

Method used

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  • Heat-resistant medium-chromium vermicular graphite cast iron glass mold material and preparation method thereof
  • Heat-resistant medium-chromium vermicular graphite cast iron glass mold material and preparation method thereof
  • Heat-resistant medium-chromium vermicular graphite cast iron glass mold material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0036] (1) Raw material preparation: Analyze the chemical composition of pig iron, steel scrap, recycled materials, ferromanganese, ferrosilicon, and ferrochromium, and then weigh the above furnace materials according to the following mass percentages and arrange them in the electric furnace: C 3.4%, Mn 0.4%, Si2. 3%, P 0.18%, S0.05%, Cr 1.0%, and the balance is Fe.

[0037] (2) Smelting: Put the pig iron, scrap steel, and returned materials weighed according to the proportion into the electric furnace for smelting, and then add ferromanganese, ferrosilicon, and ferrochrome to continue smelting. When the temperature reaches 1450°C, carry out sampling analysis of chemical elements and Adjust the percentage content of chemical elements, confirm that the composition of the front of the furnace is qualified, continue to heat up, and smelt at 1520 ° C to obtain the original molten iron;

[0038] (3) Cremation and inoculation: add 0.8% of the total mass of the original molten iron t...

Embodiment 2

[0043] (1) Raw material preparation: Analyze the chemical composition of pig iron, steel scrap, recycled materials, ferromanganese, ferrosilicon, and ferrochrome, and then weigh the above furnace materials according to the following mass percentages and arrange them in the electric furnace: C 3.6%, Mn 0.3%, Si2. 0%, P 0.18%, S0.03%, Cr 1.2%, and the balance is Fe.

[0044] (2) Smelting: Put the pig iron, scrap steel, and returned materials weighed according to the proportion into the electric furnace for smelting, and then add ferromanganese, ferrosilicon, and ferrochrome to continue smelting. When the temperature reaches 1450°C, carry out sampling analysis of chemical elements and Adjust the percentage content of chemical elements, confirm that the composition of the front of the furnace is qualified, continue to heat up, and smelt at 1520 ° C to obtain the original molten iron;

[0045] (3) Cremation and inoculation: add 0.6% of the total mass of the original molten iron to ...

Embodiment 3

[0050] (1) Raw material preparation: Analyze the chemical composition of pig iron, steel scrap, recycled materials, ferromanganese, ferrosilicon, and ferrochromium, and then weigh the above furnace materials according to the following mass percentages and arrange them in the electric furnace: C 3.5%, Mn 0.4%, Si2. 1%, P 0.1%, S0.05%, Cr 1.1%, and the balance is Fe.

[0051] (2) Smelting: Put the pig iron, scrap steel, and returned materials weighed according to the proportion into the electric furnace for smelting, and then add ferromanganese, ferrosilicon, and ferrochrome to continue smelting. When the temperature reaches 1450°C, carry out sampling analysis of chemical elements and Adjust the percentage content of chemical elements, confirm that the composition of the front of the furnace is qualified, continue to heat up, and smelt at 1520 ° C to obtain the original molten iron;

[0052] (3) Cremation and inoculation: add 0.8% of the total mass of the original molten iron to...

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Abstract

The invention provides a heat-resistant medium-chromium vermicular graphite cast iron glass mold material. The glass mold material comprises the following components of 3.0%-3.8% of C, less than or equal to 1.0% of Mn, 2.0-3.0% of Si, less than 0.2% of P, less than or equal to 0.12% of S, 1.0%-2.0% of Cr, and the balance Fe, wherein the total mass of all the components is 100%. The heat-resistantmedium-chromium vermicular graphite cast iron glass mold material has relatively high hardness, abrasive resistance and heat resistance, thus improving the heat and deformation resistance and the oxidation resistance of the glass mold as well as prolonging the service life of the glass mold.

Description

technical field [0001] The invention belongs to the technical field of glass mold materials, and in particular relates to a medium chromium vermicular graphite cast iron glass mold material and a preparation method thereof. Background technique [0002] Glass mold is an important process equipment for forming glass products, and is a key and consumable part in the production of glassware. During the forming process of glass products, the mold is frequently in contact with high-temperature molten glass, and needs to withstand oxidation growth and thermal fatigue. Anti-growth, anti-thermal fatigue and anti-wear properties. In addition, the mold material is required to be dense, easy to process, and have a small thermal expansion coefficient. [0003] Vermicular graphite cast iron is a new type of engineering material whose graphite shape is between flake and spherical. It not only has mechanical properties similar to ductile iron, but also has high thermal conductivity, oxid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C37/06C22C33/10C21D5/00C21D1/26
CPCC21D1/26C21D5/00C22C33/10C22C37/06C22C37/10Y02P10/20
Inventor 王志周家平唐华先刘凤林
Owner CHENGDU XINZHI IND
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