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Micro-alloyed cast iron glass die and making method thereof

A glass mold and micro-alloying technology, which is applied in the field of cast iron glass mold and its manufacturing, can solve the problems affecting the anti-oxidation performance, and achieve the effect of stabilizing the performance of the glass mold and excellent anti-oxidation performance

Active Publication Date: 2014-11-05
CHANGSHU JINGGONG MOLD MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nickel element helps to improve the oxidation resistance of the gray cast iron material. Although the removal of the nickel element can reduce the generation of pearlite and prevent the fine cracking of the glass mold, it also affects its oxidation resistance.

Method used

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  • Micro-alloyed cast iron glass die and making method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step 1, according to the mass percentage of each component C3.58%, Si1.95%, Mn0.52%, Cr0.05%, Ni0.10%, Mo0.55%, V0.07%, Ti0.19%, Cu0 .02%, the rest is Fe, select raw materials and add them to the smelting furnace to stir and smelt to obtain molten iron, and the smelting temperature is 1535°C;

[0024] Step 2, select 75 ferrosilicon inoculants accounting for 0.2% of molten iron weight and 0.5% of silicon barium inoculants accounting for molten iron weight to mix and inoculate as common inoculants;

[0025] Step 3. The inoculation process is carried out by inoculation with flow + inoculation in the bag + inoculation in the cavity. The proportion of the common inoculant is 40% of the total weight of the common inoculant during inoculation with the flow, and the proportion of the common inoculant is 40% of the total weight of the common inoculant during inoculation in the bag. 40% of the total weight of the inoculant, and the proportion of the co-inoculant for inoculation i...

Embodiment 2

[0029] Step 1, according to the mass percentage of each component C3.55%, Si1.89%, Mn0.55%, Cr0.07%, Ni0.08%, Mo0.52%, V0.07%, Ti0.10%, the rest For Fe, select raw materials and add them to the smelting furnace to stir and smelt to obtain molten iron. The smelting temperature is 1530°C;

[0030] Step 2, select 75 ferrosilicon inoculants accounting for 0.3% of molten iron weight and 0.6% of silicon barium inoculants accounting for molten iron weight to mix and inoculate as common inoculants;

[0031] Step 3. The inoculation process is carried out by inoculation with flow + inoculation in the bag. The ratio of co-inoculants is 40% of the total weight of the co-inoculants during inoculation with the flow, and the ratio of co-inoculants is 40% of the total weight of the co-inoculants during inoculation in the bag. 60%.

[0032] Step 4. Pour molten iron into the sand mold and control the pouring temperature to 1385°C. After pouring, take out the glass mold from the sand mold for a...

Embodiment 3

[0035] Step 1, according to the mass percentage of each component C3.65%, Si1.85%, Mn0.50%, Cr0.1%, Ni0.05%, Mo0.50%, V0.06%, Ti0.20%, Cu0 .10%, the rest is Fe, select the raw materials and add them to the smelting furnace to stir and smelt to obtain molten iron. The smelting temperature is 1540°C;

[0036] Step 2, selecting 75 ferrosilicon inoculants accounting for 0.2% by weight of molten iron and mixing silicon barium inoculants accounting for 0.6% by weight of molten iron as common inoculants for mixed inoculation;

[0037] Step 3. The inoculation in the bag + inoculation in the cavity is used for inoculation treatment. The ratio of the co-inoculants for inoculation in the bag is 60% of the total weight of the co-inoculants, and the ratio of the co-inoculants for inoculation in the cavity is the total weight of the co-inoculants. 40% by weight.

[0038] Step 4. Pour molten iron into the sand mold and control the pouring temperature to 1380°C. After pouring, take out the gla...

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Abstract

The invention discloses a micro-alloyed cast iron glass die. The micro-alloyed cast iron glass die comprises, by mass, 3.55-3.65% of C, 1.85-1.95% of Si, 0.50-0.55% of Mn, 0.05-0.10% of Cr, 0.05-0.10% of Ni, 0.50-0.55% of Mo, 0.06-0.07% of V, 0.10-0.20% of Ti, 0-0.10% of Cu, and the balance Fe. A making method of the glass die comprises the steps of melting, inoculating, casting and annealing, and an inoculant adopts a 75 ferrosilicon inoculant and a silicon-barium inoculant as a coinoculant to carry out stream inoculation + ladle inoculation + cavity inoculation mode mixed inoculation. A position having a distance of ~8mm to the inner cavity of the micro-alloyed cast iron glass die made in the invention is characterized in that the graphite has a D-shaped form and a length of 6-8 grades, the pearlite quantity is less than 5%, no carbides exist, and the mechanical properties are excellent.

Description

technical field [0001] The invention relates to a cast iron glass mold and a manufacturing method thereof, in particular to a microalloyed cast iron glass mold and a manufacturing method thereof. Background technique [0002] Cast iron glass molds are widely used in the production of glass bottles and jars. In the past, the metallographic structure of ordinary cast iron materials has a high content of flaky pearlite. For example, the anti-oxidation cast iron glass mold material disclosed in Chinese patent CN1101382A has a matrix of > 90% of fine flaky pearlite, graphite form is D type. Under the influence of long-term alternating changes of cold and heat, the strength of the glass mold will be reduced, and surface cracks will be formed, which will affect the life of the mold. [0003] With the continuous research on cast iron materials, the general requirement for gray cast iron glass molds is that the inner layer of the mold should have high oxidation resistance, the ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C33/08C21C1/08B22D1/00C21D5/00
Inventor 滕元国赵兰英
Owner CHANGSHU JINGGONG MOLD MFG
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