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Alloy, corresponding part and manufacturing method

A technology of alloys and components, applied in the direction of manufacturing tools, furnace types, furnaces, etc., can solve problems such as no grade

Inactive Publication Date: 2014-02-12
FERRY CAPITAIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But for high hardness, there is no corresponding grade in this standard
[0007] Existing cast iron grades on the gear rim give possible hardness up to 320HB

Method used

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  • Alloy, corresponding part and manufacturing method

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Embodiment Construction

[0018] All indicators are subsequently given in % by weight of the total weight.

[0019] A first aspect of the invention is the chemical composition of the alloy.

[0020] The alloy is cast iron with ductile graphite.

[0021] Its basic components are iron, addition elements and unavoidable impurities. The additive elements are carbon (C), silicon (Si), and magnesium (Mg). The element forming the balance of the alloy is therefore iron (Fe).

[0022] Typically, the alloy includes 3.5% to 7% nickel (Ni), 0.5% to 3% copper (Cu) and 0.15% to 1% molybdenum (Mo) in addition to the basic components.

[0023] Additionally, the alloy may include up to 1% or up to 0.8% manganese (Mn).

[0024] Additionally, the alloy may include up to 0.4% chromium (Cr).

[0025] In addition, the alloy may include 2.5% to 4% of carbon (C) and 1.5% to 4.4% of silicon (Si).

[0026] The nickel (Ni) content of the alloy may be at least 3.5%, 4%, 4.1%, 4.2%, 4.3%, 4.4%, 4.5%, or 4.8% and at most 7%, ...

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Abstract

A spheroidal graphite cast iron alloy comprises, in % by weight, in addition to addition elements, the following elements: Ni between 3.5% and 7%, Cu between 0.5% and 3%, Mo between 0.15% and 1%, the remainder being iron and inevitable impurities. The spheroidal graphite cast iron alloy may be used in manufacturing a part such as cogwheels and gear rims. The method of manufacturing the part may comprise casting a rough casting blank, notably into a mold, and letting the rough casting blank cool in the mold, thus obtaining the part.

Description

technical field [0001] The invention relates to a ductile iron alloy. Background technique [0002] In the prior art, eg gear rims are known for transmitting drive torque to milling machines. These flanges are made of ductile iron or steel. [0003] In the prior art, nodular cast iron gear rims are calculated either according to the AGMA6014 (6114 respectively) standard or according to the ISO6336 standard. [0004] According to the ISO6336 standard, relative to the hardness, according to the curve of the part 5 of the same standard, σ Hlim (compressive stress) curve and σ Flim (Root root flexural stress of the gear tooth) gives the maximum allowable stress. The higher the hardness, the greater the maximum allowable stress and therefore the greater the power transmitted through the gear rim. [0005] In the existing curves from ISO6336, the hardness range is extended up to 300HB, the grades produced according to EN1563 standard - ductile iron grades - which only take in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C37/04C22C37/06C22C37/08C21D9/32C21D5/00
CPCC22C37/04C22C37/10
Inventor 让-巴蒂斯特·普吕尼耶
Owner FERRY CAPITAIN