Calcium-aluminum-lead alloy for battery pole plate and preparation method thereof

Abstract

The invention provides a novel calcium-aluminum-lead intermediate alloy used for preparing a battery plate and having the advantages of short production process, a high calcium utilization rate and stable chemical composition to substitute a calcium-aluminum alloy in the prior art so as to overcome disadvantages in the prior art. The battery plate prepared from the calcium-aluminum-lead intermediate alloy has the advantages of high cleanliness, good electrical performance, long service life, high strength, more stable performance and greatly reduced smelting cost. The calcium-aluminum-lead alloy, as the intermediate alloy for preparation of the battery plate, is synthesized from, by mass, 60 to 85% of calcium, 10 to 35% of aluminum and 3 to 12% of lead. According to the invention, in the procedure of preparation of a lead-calcium alloy in eventual preparation of the plate electrode, the calcium-aluminum-lead intermediate alloy is added in one step, secondary supplementation of the calcium-aluminum-lead intermediate alloy is not needed, calcium and aluminum are fully dissolved and uniformly distributed, so the comprehensive performance of the battery plate is improved as much as possible.

Description

technical field

[0001] The invention relates to an intermediate metal for making battery pole plates, in particular to a calcium-aluminum-lead alloy for battery pole plates and a preparation method thereof. Background technique

[0002] The battery plate is an important part of the battery, and its comprehensive performance has a great impact on the battery. At present, most of the production and preparation of domestic battery plates use lead-calcium multi-element alloys, and the composition of lead-calcium alloys is similar, and the preparation process and formula are only slightly different. However, the early method of configuring lead-calcium alloys when adding calcium and aluminum was to add calcium and aluminum separately for smelting. In recent years, calcium-aluminum alloys have been used as master alloys due to process improvements and production requirements, but calcium-aluminum master alloys There are many disadvantages in preparation, storage, transportation, ...