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Glass mould material of alloy cast iron and preparation method thereof

A technology of glass mold material and alloy cast iron, which is applied in the field of preparation of alloy cast iron glass mold material and alloy cast iron glass mold material. Machinability, improved heat dissipation, and effect of ensuring heat dissipation

Active Publication Date: 2013-05-29
CHANGSHU JIANHUA MOLD TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the metal solid solution in the matrix reaches a certain degree of saturation, it enters a dynamic equilibrium stage. Even if excessive metal elements are added, they cannot be solid-dissolved into the matrix. These metal elements form alloy carbides outside the matrix, and Alloy carbides will form unevenly distributed hard spots inside the matrix, which not only brings difficulties to processing, but also affects the molding appearance of glass products
Therefore, it is difficult for many glass mold materials to increase the hardness to a higher level after reaching a certain hardness.

Method used

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  • Glass mould material of alloy cast iron and preparation method thereof
  • Glass mould material of alloy cast iron and preparation method thereof
  • Glass mould material of alloy cast iron and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A) material selection, choose contained chemical composition weight percent by the Z10 foundry fresh iron shown in table 1;

[0028] B) batching, with step A) selected Z10 cast newborn iron, the casting riser of the alloy cast iron glass mold casting of this molten iron (Z10 molten iron of cast newborn iron) and scrapped castings are return charge, with contained chemical composition Ordinary carbon steel with a mass percentage of C 0.13%, Si 0.13%, Mn 0.36%, P0.041%, and S0.022% is used as scrap steel, with a silicon content defined in the Chinese national standard GB2272-87 as 72% ~80% of No. 75 ferrosilicon alloy is ferrosilicon, and all ingredients are prepared according to the percentage by weight shown in table 2, wherein: the amount of dividing ferromolybdenum and ferrochromium into two parts A and B is shown in table 2;

[0029] C) Ladle equipment, put part B ferromolybdenum (dried ferromolybdenum) and B part ferrochrome into the bottom of the first ladle, and t...

Embodiment 2

[0034] A) material selection, choose contained chemical composition weight percent by the Z10 foundry fresh iron shown in table 1;

[0035] B) batching, with step A) the selected Z10 cast newborn iron and the riser of the alloy cast iron glass mold casting with this molten iron (Z10 cast newborn iron) is the furnace charge, with the mass percentage of contained chemical element being C Ordinary carbon steel with 0.25%, Si0.32%, Mn 0.49%, P0.048% and S0.025% is used as steel scrap. No. 75 ferrosilicon alloys are ferrosilicon, and all ingredients are prepared by the percentage by weight shown in table 2, and all the other are the same as the description to step B) of embodiment 1;

[0036] C) ladle preparation, the ferromolybdenum of B part (dried ferromolybdenum) and the ferrochromium of B part are put into the bottom of the first ladle, then be 25% Re and 60% Re by mass percentage The rare earth mixture composed of Si and 15% iron is put into the first ladle and covered on th...

Embodiment 3

[0041] A) material selection, choose contained chemical composition weight percent by the Z10 foundry fresh iron shown in table 1;

[0042] B) batching, with step A) the selected Z10 cast newborn iron, the discarded casting of the alloy cast iron glass mold casting of this molten iron (Z10 cast newborn iron) is refurbishment charge, is C 0.54 with the mass percentage of contained chemical element %, Si0.50%, Mn 0.60%, P0.039% and S0.020% ordinary carbon steel as steel scrap, the 75% silicon content defined in the Chinese national standard GB2272-87 is 72% ~ 80% No. ferrosilicon alloy is ferrosilicon, and all raw materials are prepared by the percentage by weight shown in table 2, and all the other are with the description to the step B) of embodiment 1;

[0043] C) ladle preparation, put the ferromolybdenum of part B (dried ferromolybdenum) and the ferrochrome of part B into the bottom of the first ladle, and then add the three components of Re30%, Si55% and iron 15% by mass p...

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Abstract

A glass mould material of the alloy cast iron and a preparation method thereof belong to the technical field of the glass mould material. The mould material comprises the following chemical components by weight percent: 3.49-3.65% of carbon, 1.9-2.1% of silicon, 1-1.3% of nickel, 0.5-0.7% of manganese, less than 0.16% of sulfur, less than 0.3% of phosphorus, less than 0.08% of titanium, 0.36-0.5%of molybdenum, 0.36-0.6% of chromium, less than 0.05% of vanadium, less than 1% of copper, less than 0.02% of rhenium and the balance iron. By using the technical scheme, as the selection of chemicalelements and the element contents are reasonable, the alloy cast can has ideal oxidation resistance, heat dissipation performance and fatigue resistance and fine austenite grains and the generation of D-type graphite can be improved so as to increase the heat dissipation performance of the product; by using the preparation method provided by the invention, D-type graphite can be generated, the heat dissipation performance of the product can be ensured, and metal elements can be uniformly distributed in the matrix through solid solution, thus preventing metal elements from returning to the outside of the matrix and forming alloy carbide, and ensuring the machinability of the mould.

Description

technical field [0001] The invention belongs to the technical field of glass mold materials, in particular to an alloy cast iron glass mold material, and also relates to a preparation method of the alloy cast iron glass mold material. Background technique [0002] As known in the industry, cast iron is considered to be the material of choice for glass molds today and even in the foreseeable future because of its excellent machinability, ideal heat dissipation, oxidation resistance and wear resistance. Because the excellent properties of cast iron are not limited to those listed above, it will be further increased and improved with the type and amount of metal elements added reasonably and the exquisite casting process. In view of this, people in the industry, especially technicians in the field, have been unremittingly exploring alloy cast iron glass mold materials with better comprehensive performance. This can be proved by the following patent documents which are not limi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02
Inventor 陈铭法马建华苏秋君方朝辉
Owner CHANGSHU JIANHUA MOLD TECH
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