RU2345157C1 - Alloy used for producing punching tools - Google Patents

Abstract

FIELD: metallurgy industry.

SUBSTANCE: invention refers to metallurgy. Alloy used for producing punching tools contains, wt %: molybdenum - 10.0-15.0, iron - 5.0-10.0, manganese - 5.0-10.0, cuprum - 1.0-2.0, chrome - 5.0-10.0, niobium - 1.0-2.0, aluminium - 0.1-0.2, magnesium - 0.01-0.02, titanium - 0.1-0.2, zirconium - 0.1-0.2, boron - 0.6-0.8, carbon - 1.8-2.2, germanium - 0.001-0.003, and nickel - the rest.

EFFECT: improving alloy resistance to wear and tear.

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Description

The invention relates to the field of metallurgy and relates to alloy compositions used for the manufacture of die tools for polymers.

Known alloy containing, wt.%: Molybdenum 6.0-24.0; iron 0.01-61.0; manganese 0.0001-3.0; copper 0.1-4.0; chrome 15.0-35.0; niobium 0.1-1.0; aluminum 0.01-0.8; magnesium 0.001-0.3; titanium 0.05-0.8; zirconium 0.001-0.1; boron 0.001-0.1; carbon 0.001-0.1; tantalum 1.1-8.0; silicon 0.0001-0.3; nitrogen 0.0001-0.1; nickel - the rest [1].

The objective of the invention is to increase the wear resistance of the alloy.

The technical result is achieved in that the alloy for the manufacture of stamping tools containing molybdenum, iron, manganese, copper, chromium, niobium, aluminum, magnesium, titanium, zirconium, boron, carbon and nickel, contains germanium in the following ratio of components, wt.%: molybdenum 10.0-15.0; iron 5.0-10.0; manganese 5.0-10.0; copper 1.0-2.0; chrome 5.0-10.0; niobium 1.0-2.0; aluminum 0.1-0.2; magnesium 0.01-0.02; titanium 0.1-0.2; zirconium 0.1-0.2; boron 0.6-0.8; carbon 1.8-2.2; germanium 0.001-0.003; nickel - the rest.

The table shows the alloy compositions for the manufacture of die tools.

Table Components Content, wt.% In the compositions one 2 3 Molybdenum 10.0 12.5 15.0 Manganese 5,0 7.0 10.0 Iron 10.0 7.0 5,0 Copper 1,0 1,5 2.0 Chromium 10.0 7.0 5,0 Niobium 2.0 1,5 1,0 Aluminum 0.1 0.15 0.2 Zirconium 0.1 0.15 0.2 Boron 0.6 07 0.8 Carbon 2.2 2.0 1.8 Germanium 0.001 0.002 0.003 Nickel rest rest rest Depreciation,% ~ 90 ~ 90 ~ 90 Note: alloy wear [1] is accepted as 100% at a pressure of up to 10 MPa, speed up to 5 m / s, temperature 250 ° С; counterbody steel G65.

In the composition of the alloy, the components manifest themselves as follows. Iron strengthens the solid solution due to the formation of phases such as TiFe ₂ , MoFe ₂ , NbFe ₂ . Chromium changes the binding energy of atoms in the crystal lattice. In addition to the formation of a hardening Ni ₃ Al phase, precipitation of chromium carbides of the type Cr ₇ C ₃ , Cr ₂₃ C ₆ , and titanium carbides of the type TiC is possible. Copper and manganese contribute to the dispersion hardening of the alloy, increase the resistance of the alloy to plastic deformation. Germanium contributes to the uniformity of the alloy structure. Boron forms boride phases of various compositions: Cr ₅ B ₃ , Cr ₂ B, Mo ₄ B ₃ , Cr ₄ B ₃ , Ni ₄ B ₃ , Mo ₅ B ₄ , Cr ₅ B ₄ , Ni ₅ B ₄ , slows down diffusion processes by grain boundaries. Magnesium favorably affects the state of grain boundaries, zirconium strengthens them.

The alloy is subject to heat treatment: quenching from 1190 + 10 ° С, holding for 2 hours, cooling in air, reheating for hardening to 1050 + 10 ° С, holding for 4 hours, cooling in air, aging at 800 + 10 ° С, holding for 16 hours cooling in the air.

Information sources

1. JP 08-003670 C22C 19/05, 1996.

Claims (1)

An alloy for the manufacture of stamping tools containing molybdenum, iron, manganese, copper, chromium, niobium, aluminum, magnesium, titanium, zirconium, boron, carbon, nickel, characterized in that it contains germanium in the following ratio of components, wt.%:
molybdenum 10.0-15.0 iron 5.0-10.0 manganese 5.0-10.0 copper 1.0-2.0 chromium 5.0-10.0 niobium 1.0-2.0 aluminum 0.1-0.2 magnesium 0.01-0.02 titanium 0.1-0.2 zirconium 0.1-0.2 boron 0.6-0.8 carbon 1.8-2.2 germanium 0.001-0.003 nickel rest