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Manufacturing method of heat fatigue resistant cast iron glassware mold material

A glassware and mold material technology, which is applied in the manufacturing field of heat-fatigue-resistant cast iron glassware mold materials, can solve the problems of high price and unfavorable control of mold production costs, and achieves reduction of cracking, reduction of peeling problems, and high wear resistance. and strength effects

Active Publication Date: 2021-03-05
CHANGSHU JINNUO JINGGONG MOLD MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the use of molybdenum and vanadium is relatively small, the price of molybdenum and vanadium raw materials is relatively high, which is not conducive to controlling the production cost of molds, so it is necessary to seek other more economical alternatives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for manufacturing an anti-thermal fatigue cast iron glassware mold material, comprising the steps of:

[0017] Step 1. Select raw materials according to the mass percentage of each component and add them to the smelting furnace for smelting. The mass percentage of each component is: carbon 3.7%, silicon 1.9%, manganese 0.32%, sulfur<0.05%, phosphorus<0.05%, titanium 0.1%, 0.65% copper, 0.06% tin, 0.25% vanadium, 0.03% rare earth elements, 0.022% magnesium, and the rest is iron. The temperature during smelting is 1530°C;

[0018] Step 2, adding 0.7% of the total mass of the molten iron to the molten iron for vermicularization treatment, selecting 75 ferrosilicon inoculants for inoculation in the bag;

[0019] Step 3. After the creeping and inoculation treatment is completed, the molten iron is poured into the sand mold by means of iron core chilling. The temperature of the creeping and inoculation treatment is 1475°C, and the pouring temperature is 1435°C. After...

Embodiment 2

[0021] A method for manufacturing an anti-thermal fatigue cast iron glassware mold material, comprising the steps of:

[0022] Step 1. Select raw materials according to the mass percentage of each component and add them to the smelting furnace for smelting. The mass percentage of each component is: carbon 3.8%, silicon 1.8%, manganese 0.3%, sulfur<0.05%, phosphorus<0.05%, titanium 0.13%, 0.7% copper, 0.07% tin, 0.22% vanadium, 0.025% rare earth elements, 0.026% magnesium, and the rest is iron. The melting temperature is 1520°C;

[0023] Step 2, adding 0.6% of the total mass of the molten iron to the molten iron to carry out the vermicularization treatment, and selecting 75 ferrosilicon inoculants to carry out the inoculation treatment in the bag;

[0024] Step 3. After the creeping and inoculation treatment is completed, the molten iron is poured into the sand mold by means of iron core chilling. The temperature of the creeping and inoculation treatment is 1470 ° C, and the po...

Embodiment 3

[0026] A method for manufacturing an anti-thermal fatigue cast iron glassware mold material, comprising the steps of:

[0027] Step 1. Select raw materials according to the mass percentage of each component and add them to the smelting furnace for smelting. The mass percentages of each component are: carbon 3.75%, silicon 1.95%, manganese 0.36%, sulfur<0.05%, phosphorus<0.05%, titanium 0.18%, 0.5% copper, 0.07% tin, 0.2% vanadium, 0.032% rare earth elements, 0.026% magnesium, and the rest is iron. The melting temperature is 1540°C;

[0028] Step 2, adding 0.6% of the total mass of the molten iron to the molten iron to carry out the vermicularization treatment, and selecting 75 ferrosilicon inoculants to carry out the inoculation treatment in the bag;

[0029] Step 3. After the creeping and inoculation treatment is completed, the molten iron is poured into the sand mold by means of iron core chilling. The temperature of the creeping and inoculation treatment is 1480 ° C, and th...

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PUM

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Abstract

The invention discloses a method for manufacturing a heat fatigue-resistant cast iron glassware mold material, which comprises the following steps: selecting raw materials according to the mass percentage of each component and adding them to a melting furnace for smelting. The mass percentage of each component is: carbon 3.7-3.8%, silicon 1.8% ~2.0%, manganese 0.3~0.36%, sulfur<0.05%, phosphorus<0.05%, titanium 0.1~0.2%, copper 0.5~0.7%, tin 0.06~0.08%, vanadium 0.2~0.25%, rare earth elements 0.025~0.035% , 0.02-0.03% magnesium, and the rest is iron; add 0.6-0.7% of the total mass of the molten iron to the molten iron for vermicularization treatment, and select 75 ferrosilicon inoculants for inoculation in the bag; After the completion, the molten iron is poured into the sand mold by means of iron core chilling, and the glass mold is taken out from the sand mold after pouring for annealing treatment. The service life of the thermal fatigue-resistant cast iron glassware mold material obtained by the invention is equivalent to that of the glass mold containing molybdenum and vanadium elements.

Description

technical field [0001] The invention relates to a manufacturing method of a cast iron glass mold material, in particular to a manufacturing method of a thermal fatigue-resistant cast iron glassware mold material. Background technique [0002] The graphite form of vermicular graphite cast iron is worm-like, its strength is higher than that of gray cast iron, and it has better casting performance and thermal conductivity, so it is a commonly used cast iron material for glass molds. In the past, molybdenum, vanadium, and titanium elements were usually added to vermicular graphite cast iron to solve the problem of mold cracking. For example, the Chinese patent whose publication number is CN106367667A "Manufacturing method of anti-cracking rare earth alloy cast iron glass mold material" discloses that vanadium-containing raw materials and molybdenum-containing raw materials are added at the same time when the temperature reaches 1470-1480 ° C during smelting, and the mass percent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/10C22C37/10C21D5/00
CPCC21D5/00C22C33/10C22C37/10
Inventor 滕元国赵兰英
Owner CHANGSHU JINNUO JINGGONG MOLD MFG