CN104894439A - Chromium-aluminum alloy and preparation method thereof - Google Patents

Abstract

The invention relates to the field of special metal, in particular to a chromium-aluminum alloy and a preparation method thereof. The chromium-aluminum alloy comprises, by weight, 50-60% of aluminum, 8-10% of chromium, 5-10% of silicon, 5-15% of carbon, 1-5% of iron, 1-5% of zinc and 1-2% of nickel. The chromium-aluminum alloy and the preparation method thereof have the advantages that the chromium-aluminum alloy additive has low melting point, high diffusivity and deoxidizing effect and is easy to crush, and flushing and casting are facilitated.

Description

A kind of Ohmax and preparation method thereof

Technical field

The present invention relates to Special Metal field, particularly a kind of Ohmax and preparation method thereof.

Background technology

Along with the development of society, the demand of all trades and professions to high temperature steel alloy, weathering steel alloy increases day by day.Alloy of the present invention is then the novel alloy addition smelting above-mentioned steel grade.Because aluminium and chromium all have very strong toughness, hand breaking is very difficult.Have and evolution treatment technology, be all, after electrolytic aluminum and electrolysis chromium are cut into block, join in molten steel, and make stokehold Alloying Treatment, above technology has some not enough: 1 is that electrolytic aluminum and chromium cause waste to electric energy and auxiliary material, adds steel enterprise production cost; Two is because single aluminium chromium joins in molten steel, dispersed poor, adds the difficulty of flushing and casting; Three is that the storage of electrolytic aluminum and chromium needs supporting equipment, and operation also bothers.And the present invention just can fundamentally overcome above-mentioned deficiency.

Summary of the invention

For above to the deficiencies in the prior art, technical problem to be solved by this invention is: provide a kind of alloy, improves the intensity of alloy, adds wearing quality, improves its machinability.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of Ohmax, comprises the component of following mass percent:

Aluminium 50 ~ 60%

Chromium 8 ~ 10%

Silicon 5 ~ 10%

Carbon 5 ~ 15%

Iron 1 ~ 5%

Zinc 1 ~ 5%

Nickel 1 ~ 2%.

As further innovation of the present invention, described Ohmax is also containing manganese, and the mass percent of manganese is 0.05 ~ 0.1%.

As further innovation of the present invention, described Ohmax is also containing magnesium, and the mass percent of magnesium is 0.01 ~ 0.05%.

As further innovation of the present invention, described Ohmax also comprises the titanium of 0.05 ~ 0.12%.

A kind of manufacture method of chrome copper as claimed in claim 1: comprise the steps:

Step 1: first aluminium, chromium, silicon, iron, carbon are joined melting in high temperature melting furnace, the temperature of melting is 800-1200 DEG C;

Step 2: subsequently to add nitrogen and chlorine in smelting furnace, ratio of mixture is 3:1-5:1, adds zinc under anaerobic, nickel carries out melting, and the temperature of melting is 700-800 DEG C;

Step 3: being joined in mould by the alloy molten liquid obtained is shaped and completely cuts off air thermal preservation carries out tempering, and tempering time is 10h;

Step 4: last and carry out anaerobic quenching in the machine oil joining 30-50 DEG C;

Step 5: by the alloy block sanding and polishing after quenching.

The invention has the beneficial effects as follows:

1, the present invention is by adding iron, zinc material in the component of traditional Ohmax, utilizes the height of this bi-material chemistry activity to improve the preparation speed of Ohmax.

2, manganese can improve the switching performance between chromium aluminium two materials, improves stability and the intensity of material.

3, magnesium chemically reactive high tenacity is good, can the mechanical characteristic of effective improved materials.

Embodiment

Embodiment 1 Ohmax prescription

Aluminium 60%

Chromium 10%

Silicon 10%

Carbon 15%

Iron 5%

Zinc 5%

Nickel 2%

Manganese 0.08%

Magnesium 0.02%

Titanium 0.05%;

A kind of manufacture method of chrome copper: comprise the steps:

Step 1: first aluminium, chromium, silicon, iron, carbon are joined melting in high temperature melting furnace according to said components, the temperature of melting is 1111 DEG C;

Step 2: subsequently to add nitrogen and chlorine in smelting furnace, ratio of mixture is 5:1, then adds zinc, nickel, manganese, magnesium, titanium under anaerobic and join in smelting furnace according to said components and carry out melting, and the temperature of melting is 718 DEG C;

Step 3: being joined in mould by the alloy molten liquid obtained is shaped and completely cuts off air thermal preservation carries out tempering, and tempering time is 10h;

Step 4: last and carry out anaerobic quenching in the machine oil joining 35 DEG C;

Step 5: by the alloy block sanding and polishing after quenching.

Embodiment 2 Ohmax prescription

Aluminium 50%

Chromium 10%

Silicon 10%

Carbon 3%

Iron 5%

Zinc 1%

Nickel 2%

Manganese 0.07%

Magnesium 0.04%

Titanium 0.08%;

A kind of manufacture method of chrome copper: comprise the steps:

Step 1: first aluminium, chromium, silicon, iron, carbon are joined melting in high temperature melting furnace according to said components, the temperature of melting is 998 DEG C;

Step 2: subsequently to add nitrogen and chlorine in smelting furnace, ratio of mixture is 4:1, then adds zinc, nickel, manganese, magnesium, titanium under anaerobic and join in smelting furnace according to said components and carry out melting, and the temperature of melting is 750 DEG C;

Step 3: being joined in mould by the alloy molten liquid obtained is shaped and completely cuts off air thermal preservation carries out tempering, and tempering time is 10h;

Step 4: last and carry out anaerobic quenching in the machine oil joining 35 DEG C;

Step 5: by the alloy block sanding and polishing after quenching.

Embodiment 3 Ohmax prescription

Aluminium 40%

Chromium 7%

Silicon 8%

Carbon 2%

Iron 3%

Zinc 3%

Nickel 2%

Manganese 0.05%

Magnesium 0.01%

Titanium 0.11%.

A kind of manufacture method of chrome copper: comprise the steps:

Step 1: first aluminium, chromium, silicon, iron, carbon are joined melting in high temperature melting furnace according to said components, the temperature of melting is 1050 DEG C;

Step 2: subsequently to add nitrogen and chlorine in smelting furnace, ratio of mixture is 5:1, then adds 800 DEG C under anaerobic;

Step 3: being joined in mould by the alloy molten liquid obtained is shaped and completely cuts off air thermal preservation carries out tempering, and tempering time is 10h;

Step 4: last and carry out anaerobic quenching in the machine oil joining 45 DEG C;

Step 5: by the alloy block sanding and polishing after quenching.

Claims (5)

1. an Ohmax, is characterized in that: the component comprising following mass percent:

Aluminium 50 ~ 60%

Chromium 8 ~ 10%

Silicon 5 ~ 10%

Carbon 5 ~ 15%

Iron 1 ~ 5%

Zinc 1 ~ 5%

Nickel 1 ~ 2%.

2. Ohmax according to claim 1, is characterized in that: described Ohmax is also containing manganese, and the mass percent of manganese is 0.05 ~ 0.1%.

3. Ohmax according to claim 1, is characterized in that: described Ohmax is also containing magnesium, and the mass percent of magnesium is 0.01 ~ 0.05%.

4. Ohmax according to claim 1, is characterized in that: described Ohmax also comprises the titanium of 0.05 ~ 0.12%.

5. the manufacture method of a chrome copper according to claim 1: comprise the steps:

Step 1: first aluminium, chromium, silicon, iron, carbon are joined melting in high temperature melting furnace, the temperature of melting is 800-1200 DEG C;

Step 2: subsequently to add nitrogen and chlorine in smelting furnace, ratio of mixture is 3:1-5:1, adds zinc under anaerobic, nickel carries out melting, and the temperature of melting is 700-800 DEG C;

Step 3: being joined in mould by the alloy molten liquid obtained is shaped and completely cuts off air thermal preservation carries out tempering, and tempering time is 10h;

Step 4: last and carry out anaerobic quenching in the machine oil joining 30-50 DEG C;

Step 5: by the alloy block sanding and polishing after quenching.