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High tenacity corrosion resistant ductile iron material

A ductile iron, corrosion-resistant technology, applied in the field of casting materials, can solve the problems of increased cost, less material, high price, etc., and achieve the effect of good corrosion resistance

Active Publication Date: 2010-07-14
YANTAI EDDIE HYDRAULIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, there are few materials that can meet the above performance requirements, and the price is relatively expensive, resulting in an increase in cost

Method used

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  • High tenacity corrosion resistant ductile iron material
  • High tenacity corrosion resistant ductile iron material
  • High tenacity corrosion resistant ductile iron material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The present embodiment is a kind of high-toughness corrosion-resistant ductile iron material, and the weight percent of its chemical composition is:

[0024] C: 2.8%, Si: 2.25%, Cr: 5.4%, Mn: 0.33%, Cu: 0.35%, Al: 0.33%, Mo: 0.35%, Ni: 1.25%, Mg: 0.22%, RE: 0.05%, S: 0.023%, Sb: 0.03%, Bi: 0.02%, N: 0.035%, P: 0.04%, and the balance is Fe.

[0025] The above-mentioned various required alloy ingredients are mixed with pig iron for ductile iron, and put into an electric furnace for smelting. The smelted molten iron is spheroidized and inoculated, poured into the pre-made sand mold, formed and cooled, and the casting of the required material is obtained.

[0026] The above-mentioned castings are measured, and the performance parameters are shown in Table 2:

[0027] Table 2

[0028]

Embodiment 2

[0030] The present embodiment is a kind of high-toughness corrosion-resistant ductile iron material, and the weight percent of its chemical composition is:

[0031] C: 3.5%, Si: 2.2%, Cr: 5.35%, Mn: 0.38%, Cu: 0.48%, Al: 0.3%, Mo: 0.40%, Ni: 1.1%, Mg: 0.27%, RE: 0.045%, S: 0.027%, Sb: 0.05%, Bi: 0.01%, N: 0.03%, P: 0.06%, and the balance is Fe.

[0032] The above-mentioned various required alloy ingredients are mixed with pig iron for ductile iron, and put into an electric furnace for smelting. Incubate and spheroidize the smelted molten iron, pour it into the sand mold prepared in advance, and cool it to form the casting of the required material.

[0033] The above-mentioned castings are measured, and its performance parameters are shown in Table 3:

[0034] table 3

[0035]

Embodiment 3

[0037] The present embodiment is a kind of high-toughness corrosion-resistant ductile iron material, and the weight percent of its chemical composition is:

[0038] C: 3.4%, Si: 2.35%, Cr: 5.3%, Mn: 0.38%, Cu: 0.3%, Al: 0.39%, Mo: 0.40%, Ni: 1.45%, Mg: 0.22%, RE: 0.05%, S: 0.027%, Sb: 0.05%, Bi: 0.03%, N: 0.03%, P: 0.04%, and the balance is Fe.

[0039] The above-mentioned various required alloy ingredients are mixed with pig iron for ductile iron, and put into an electric furnace for smelting. The smelted molten iron is spheroidized and inoculated, poured into the pre-made sand mold, formed and cooled, and the casting of the required material is obtained.

[0040] The above-mentioned castings are measured, and the performance parameters are shown in Table 4:

[0041] Table 4

[0042]

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Abstract

The invention discloses a high-toughness corrosion-resistant ductile iron casting material. The invention discloses a high-toughness corrosion-resistant ductile iron casting material which comprises chemical compositions with the following weight percentages: 2.5 to 3.5 percent of C, 2.2 to 2.4 percent of Si, 5.3 to 5.6 percent of Cr, 0.3 to 0.4 percent of Mn, 0.3 to 0.5 percent of Cu, 0.3 to 0.4percent of AL, 0.35 to 0.40 percent of Mo, 1 to 1.5 percent of Ni, 0.2 to 0.3 percent of Mg, 0.04 to 0.07 percent of RE, 0.02 to 0.03 percent of S, 0.02 to 0.05 percent of Sb, 0.01 to 0.03 percent ofBi, equal to or less than 0.05 percent of N, equal to or less than 0.06 of P and the residual quantity of Fe. The ductile casting material has high toughness, excellent corrosion resistance and can meet the requirements on axle housing materials of drive axles with heavy loading, high power and high vehicle speed.

Description

technical field [0001] The invention relates to a casting material, in particular to a high-toughness corrosion-resistant ductile iron material. Background technique [0002] Due to the acceleration of infrastructure construction and the improvement of people's living quality in recent years, trucks are also developing in the direction of increased cargo load, increased power, faster vehicle speed, and beautiful and comfortable appearance, which causes the fatigue life of the drive axle housing to decrease, and at the same time With the development of industry, industrial pollutants in the atmosphere (such as SO 2 ) content also increases accordingly. For some castings exposed to the atmosphere, they are corroded by weak corrosive media such as air, steam, water, and acids, alkalis, and salts, resulting in serious corrosion of castings. In particular, castings for truck drive axle housings require high toughness and corrosion resistance. But at present, there are few mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C37/10
Inventor 董飞孟雷辛彦
Owner YANTAI EDDIE HYDRAULIC TECH