CN103352147A - Cast aluminum alloy material for radiator and manufacturing method thereof - Google Patents

Abstract

The invention provides a cast aluminum alloy material for a radiator. The cast aluminum alloy material is characterized by comprising the following components: on the basis of weight percentage, 5.2 to 5.6 of Si, 2.0 to 2.3 of Cu, 1.2 to 1.5 of Mg, 1.2 to 1.4 of Zn, 3.2 to 3.5 of Mn, 0.05 to 0.08 of Sr, 0.2 to 0.3 of Mo, 0.23 to 0.26 of V, 0.10 to 0.16 of Ta, 2.1 to 2.3 of Ni and 0.14 to 0.16 of W, with the balance being Al. According to the invention, a heat treatment process effectively improves strength and toughness of an aluminum alloy, refinement of grains in the structure of the aluminum alloy is uniform, so castability of the aluminum alloy is effectively improved; the cast aluminum alloy material has the advantages of a scientific formula and good thermal conductivity and is applicable to the radiator of an air conditioner.

Description

Scatterer cast aluminium alloy material and manufacture method thereof

Technical field

The invention belongs to a kind of aluminium alloy, specifically a kind of air conditioner heat radiator aluminum alloy materials.

Background technology

The air-conditioning heat dissipation structural part is to be made by aluminium alloy mostly, comprises cast member, squeezes type spare, stamping parts and forge piece etc.Aluminum alloy cast forging piece cost is lower, but its thermal conductivity of aluminum alloy junction member of general cast form is not high, usually about 90 W/mK, to such an extent as to heat conductivility is poor, present fine aluminium commonly used (purity＞more than 99%) is although thermal conductivity very high (＞220 W/mK), but its flowability and castibility are bad, and too soft, be difficult for processing, and yielding.At present, the casting aluminum alloy that the research thermal conductivity is high, intensity is high, most important to air conditioner heat radiator.

Summary of the invention

The object of the present invention is to provide a kind of scatterer cast aluminium alloy material and manufacture method thereof.

The technical solution used in the present invention is:

The scatterer cast aluminium alloy material, it is characterized in that the weight percentage of its component is: silicon 5.2-5.6, copper 2.0-2.3, magnesium 1.2-1.5, zinc 1.2-1.4, manganese 3.2-3.5, strontium 0.05-0.08, Mo0.2-0.3, V0.23-0.26, Ta0.10-0.16, Ni2.1-2.3, W0.14-0.16, surplus are aluminium.

The described scatterer manufacture method of cast aluminium alloy material, comprise melting, skim, detect alloying constituent and adjust, add refining agent refining, casting, it is characterized in that: be cooled to 180-240 ℃ with 60-80 ℃ of/hour speed after the casting, be incubated 4-6 hour; Then, be cooled to 440-470 ℃ with 95-105 ℃ of/hour speed again, be incubated 2-3 hour; Be warming up to 530-560 ℃ with 50-70 ℃ of/hour speed again, be incubated 2-3 hour; Be cooled to 220-240 ℃ with 140-160 ℃ of/hour speed again, be incubated 4-6 hour; Be warming up to 380-410 ℃ with 40-60 ℃ of/hour speed again, be incubated 2-3 hour; Be cooled to room temperature with 120-150 ℃ of/hour speed again.

Described refining agent is formed by the feed composition mixing briquetting of following weight part: vermiculite power 6-7, sodium aluminum fluoride 2.3-2.5, SnO ₂2.2-2.5, Calcium Fluoride (Fluorspan) 2.2-2.4, gac 2.5-2.8, sodium-chlor 2-3, Bi ₂O ₃1.1-1.3, vanadium diboride 2.1-2.4, bauxitic clay 2.1-2.5, nano silicon 1-2.

The present invention processes through above-mentioned refining agent, obtain high-quality molten aluminium alloy, such molten aluminium alloy is used for Foundry Production, obviously improve yield rate, particularly the degree of porosity in the foundry goods reduces the 1-2 degree, is controlled effectively, and can not produce pore at cast(ing) surface, trapped oxide also obviously reduces, and oxide inclusion is about 2 grades.

Thermal treatment process of the present invention effectively raises intensity and the toughness of aluminium alloy, and grain refining is even in the aluminum alloy organization, effectively raises the castability of aluminium alloy, scientific formulation of the present invention, have the good characteristics of thermal conductivity, be suitable for the conditioner scatterer and use.

Embodiment

The scatterer cast aluminium alloy material, the weight percentage of component is: silicon 5.2-5.6, copper 2.0-2.3, magnesium 1.2-1.5, zinc 1.2-1.4, manganese 3.2-3.5, strontium 0.05-0.08, Mo0.2-0.3, V0.23-0.26, Ta0.10-0.16, Ni2.1-2.3, W0.14-0.16, surplus are aluminium.

Manufacture method comprises melting, skims, detects alloying constituent and adjusts, adds refining agent refining, casting, is cooled to 180-240 ℃ with 60-80 ℃ of/hour speed after the casting, is incubated 4-6 hour; Then, be cooled to 440-470 ℃ with 95-105 ℃ of/hour speed again, be incubated 2-3 hour; Be warming up to 530-560 ℃ with 50-70 ℃ of/hour speed again, be incubated 2-3 hour; Be cooled to 220-240 ℃ with 140-160 ℃ of/hour speed again, be incubated 4-6 hour; Be warming up to 380-410 ℃ with 40-60 ℃ of/hour speed again, be incubated 2-3 hour; Be cooled to room temperature with 120-150 ℃ of/hour speed again.

Described refining agent is formed by the feed composition mixing briquetting of following weight part (kilogram): vermiculite power 7, sodium aluminum fluoride 2.3, SnO ₂2.5, Calcium Fluoride (Fluorspan) 2.4, gac 2.8, sodium-chlor 2, Bi ₂O ₃1.1, vanadium diboride 2.4, bauxitic clay 2.5, nano silicon 1.

Intensity of aluminum alloy of the present invention reaches 310Mpa-340MPa, and hardness can reach 109HB～125HB, unit elongation 4-9%, the corrosion rate of its salt-fog test only be the 0.1-0.2 milligram/centimetre ². day.Thermal conductivity 200-230W/mK.

Claims (2)

1. scatterer cast aluminium alloy material, it is characterized in that the weight percentage of its component is: silicon 5.2-5.6, copper 2.0-2.3, magnesium 1.2-1.5, zinc 1.2-1.4, manganese 3.2-3.5, strontium 0.05-0.08, Mo0.2-0.3, V0.23-0.26, Ta0.10-0.16, Ni2.1-2.3, W0.14-0.16, surplus are aluminium.

2. scatterer according to claim 1 is with the manufacture method of cast aluminium alloy material, comprise melting, skim, detect alloying constituent and adjust, add refining agent refining, casting, it is characterized in that: be cooled to 180-240 ℃ with 60-80 ℃ of/hour speed after the casting, be incubated 4-6 hour; Then, be cooled to 440-470 ℃ with 95-105 ℃ of/hour speed again, be incubated 2-3 hour; Be warming up to 530-560 ℃ with 50-70 ℃ of/hour speed again, be incubated 2-3 hour; Be cooled to 220-240 ℃ with 140-160 ℃ of/hour speed again, be incubated 4-6 hour; Be warming up to 380-410 ℃ with 40-60 ℃ of/hour speed again, be incubated 2-3 hour; Be cooled to room temperature with 120-150 ℃ of/hour speed again;

Described refining agent is formed by the feed composition mixing briquetting of following weight part: vermiculite power 6-7, sodium aluminum fluoride 2.3-2.5, SnO ₂2.2-2.5, Calcium Fluoride (Fluorspan) 2.2-2.4, gac 2.5-2.8, sodium-chlor 2-3, Bi ₂O ₃1.1-1.3, vanadium diboride 2.1-2.4, bauxitic clay 2.1-2.5, nano silicon 1-2.