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Alloy vermicular cast iron glass mold material and preparation method thereof

A technology of glass mold material and vermicular graphite cast iron, which is applied in the field of glass mold manufacturing, can solve the problem of oxidation speed reduction and achieve good solid solution strengthening effect

Active Publication Date: 2014-02-26
ORI MOLD TECH SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the graphite of ductile iron is isolated, there is no such channel, and the oxidation rate drops significantly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A) Melting, add pig iron with brand Q12 into the smelting furnace (electric furnace). After the pig iron is melted, add 15% of the weight of the pig iron into the furnace. For scrap steel after degreasing and derusting treatment, after the scrap steel is melted and the temperature rises to 1450-1460°C, add granular ferro-vanadium and ferro-molybdenum with a particle diameter of 2-6mm, after the ferro-vanadium and ferro-molybdenum are melted Carry out heat preservation, the heat preservation temperature is 1500 ℃, and the heat preservation time is 6 minutes. After the heat preservation is completed, slag removal is carried out. After the slag removal, ferromanganese, ferrosilicon and ferrochrome are added in turn for slagging deoxidation, that is, slagging deoxidation treatment is carried out. Add ferro-titanium and nickel plates when the temperature reaches 1520°C, and keep warm after the ferro-titanium and nickel plates are melted. The holding temperature is 1520°C an...

Embodiment 2

[0053] A) Melting, add pig iron with brand Q12 into the smelting furnace (electric furnace). After the pig iron is melted, add 20% of the weight of the pig iron into the furnace. For scrap steel after degreasing and derusting treatment, after the scrap steel is melted and the temperature rises to 1450-1460℃, add granular ferro-vanadium and ferro-molybdenum with a particle diameter of 3-5mm, after the ferro-vanadium and ferro-molybdenum are melted Carry out heat preservation, the heat preservation temperature is 1510°C, and the heat preservation time is 5 minutes. After the heat preservation is over, slag removal is carried out. After the slag removal, ferromanganese, ferrosilicon and ferrochrome are added in turn for slagging deoxidation, that is, slagging deoxidation treatment is carried out. When the temperature reaches 1550°C, add ferro-titanium and nickel plates, and keep warm after the ferro-titanium and nickel plates are melted. The holding temperature is 1550°C, and th...

Embodiment 3

[0056] A) Melting, add pig iron with brand Q12 into the smelting furnace (electric furnace). After the pig iron is melted, add 10% of the weight of the pig iron into the furnace. For scrap steel after degreasing and derusting treatment, after the scrap steel is melted and the temperature rises to 1450-1460°C, add granular ferro-vanadium and ferro-molybdenum with a particle diameter of 2-6mm, after the ferro-vanadium and ferro-molybdenum are melted Carry out heat preservation, the heat preservation temperature is 1505°C, and the heat preservation time is 5.5min. After the heat preservation is over, slag removal is carried out. After the slag removal, ferromanganese, ferrosilicon and ferrochrome are added in turn for slagging and deoxidation, that is, slagging and deoxidation treatment is carried out. When the temperature reaches 1535°C, add ferro-titanium and nickel plates, and keep warm after the ferro-titanium and nickel plates are melted. The holding temperature is 1535°C, ...

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Abstract

The invention relates to an alloy vermicular cast iron glass mold material and a preparation method thereof, and belongs to the field of glass mold manufacturing. The alloy vermicular cast iron glass mold material comprises the following chemical elements in percentage by mass: 3.5-3.6% of carbon, 2.9-3.0% of silicon, 0.4-0.5% of manganese, 0.4-0.5% of molybdenum, less than 0.15% of vanadium, less than 0.10% of titanium, 0.3-0.4% of chromium, 0.4-0.5% of nickel, less than 0.05% of phosphorus, less than 0.03% of sulfur and the balance of iron. The invention has the following advantages: the reasonable selection of the metal elements and the mass percents thereof is beneficial to saving noble metal materials and reducing the variety of the used noble metal elements; the selected alloy elements have a favorable solution strengthening effect, thereby being beneficial to enhancing the strength of the iron element under a high-temperature environment and then prolonging the service life of the glass mold; and the preparation method provided by the invention is beneficial to the dispersion and distribution of second-phase carbides in grain boundaries, so that the grain boundaries can be strengthened, and the creep strength can be improved.

Description

technical field [0001] The invention belongs to the field of glass mold manufacturing, and in particular relates to an alloy vermicular graphite cast iron glass mold material, and also relates to a preparation method thereof. Background technique [0002] Glass mold is the main equipment for the production of glass products. It is frequently in contact with high-temperature glass liquid at 600°C-1100°C, and suffers from oxidation, growth, heat exchange, and thermal fatigue. At the same time, due to frequent mold opening and closing, it is required The contact surface of the mold has excellent wear resistance. Specifically, the surface of the inner cavity of the glass mold is required to have good high temperature resistance, wear resistance, oxidation resistance and corrosion resistance to prolong the service life; the outer circle of the glass mold is required to have excellent heat dissipation performance to ideally adapt to high speed production needs. [0003] At prese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C37/08C22C33/08
Inventor 戈剑鸣
Owner ORI MOLD TECH SUZHOU
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