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Cast aluminum alloy pump body impeller material and manufacturing method thereof

A technology for casting aluminum alloy and manufacturing method, which is applied in the field of casting aluminum alloy, can solve the problems of unsatisfactory comprehensive mechanical properties of casting aluminum alloy, can not meet the production needs of manufacturers, low tensile strength and elongation, etc., and achieves good wear resistance. , prolong the service life, the effect of high strength

Active Publication Date: 2016-01-27
ANHUI TIANMA PUMP VALVE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The shells of various pumps need to withstand high pressure, especially the high instantaneous pressure. Cast aluminum alloy is welcomed by many pump manufacturers because of its light matrix, but the comprehensive mechanical properties of cast aluminum alloy are not ideal. The tensile strength and elongation are low, and the casting performance is poor, which cannot meet the production needs of manufacturers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] A cast aluminum alloy pump body impeller material, the composition of which is composed of silicon 1.9-2.2, copper 3-3.3, manganese 4.6-0.9, tin 0.16-0.18, chromium 0.1-0.3, Hf0.01-0.02, Nb0 .16-0.18, V0.12-0.14, Mo0.05-0.08, Ga0.02-0.04, In0.2-0.23, As0.5-0.58, the balance is aluminum.

[0010] Manufacturing method: Add electrolytic aluminum in the intermediate frequency furnace, heat to 680-710°C, add other alloy components after the aluminum material is melted, heat up to 730-750°C, stir for 30-45 minutes, remove slag, detect and adjust the alloy composition; then , add refining agent, stir for 30-40 minutes, then remove the slag; cool down to 680-710°C, and cast; after casting, cool down to 160-200°C at a rate of 160-190°C / hour, and keep warm for 2-3 hours; then, Cool down to 70-80°C at a rate of 80-90°C / hour and keep warm for 2-4 hours; then raise the temperature to 520-540°C at a rate of 120-140°C / hour and keep warm for 1-2 hours; then heat at 90-100°C / hour Cool ...

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PUM

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Abstract

A casting aluminum alloy pump body impeller material is characterized by comprising the components by the mass percentage: 1.9-2.2% of Si, 3-3.3% of Cu, 4.6-0.9% of Mn, 0.16-0.18% of Sn, 0.1-0.3% of Cr, 0.01-0.02% of Hf, 0.16-0.18% of Nb, 0.12-0.14% of V, 0.05-0.08% of Mo, 0.02-0.04% of Ga, 0.2-0.23% of In, 0.5-0.58% of As, and the balance being Al. The casting aluminum alloy pump body impeller material has the advantages that: a manufactured impeller has high strength and good abrasion resistance; and the size precision is high, the surface roughness can meet performance requirements of the impeller, and the service life is prolonged.

Description

technical field [0001] The invention relates to an aluminum alloy manufacturing technology, more specifically a casting aluminum alloy technology. Background technique [0002] The shells of various pumps need to withstand high pressure, especially the high instantaneous pressure. Cast aluminum alloy is welcomed by many pump manufacturers because of its light matrix, but the comprehensive mechanical properties of cast aluminum alloy are not ideal. The tensile strength and elongation are low, and the casting performance is poor, which cannot meet the production needs of manufacturers. Contents of the invention [0003] The object of the present invention is to provide a casting aluminum alloy pump body impeller material and its manufacturing method. [0004] The present invention takes following technical scheme: [0005] A casting aluminum alloy pump body impeller material, characterized in that its composition is composed of: silicon 1.9-2.2, copper 3-3.3, manganese 4.6...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/02C22C1/06
Inventor 王成华周峰王成荣
Owner ANHUI TIANMA PUMP VALVE GROUP