What is the role of cos flux for cast-on-strap joints in lead-acid batteries
Date：2024-11-22 Auto：
{},The Cast On Strap Machine is designed to process automotive and industrial batteries.Every battery maker knows that cast-on-strap (COS) is one of the most critical stages in lead-acid battery manufacturing. Properly casting the so-called strap connections over the already aligned and positioned battery plates is key to the battery’s correct functioning.
Casting and welding methods are generally: For the plate group of the stacked positive plate, separator (glass fiber separator paper) and negative plate, the lugs are first soaked in flux, and then the plate group is moved to the lead liquid with mold for casting and welding. The pole ears are inserted into the lead liquid at about 500℃, {},so that the lead liquid plate melts the surface of the lugs, and then the lead liquid is cooled and solidified, so that multiple plugs are connected together.{},{},{}, The purpose of the lug immersion flux of the plate is to help welding, so that the lug surface and the lead liquid melt into one body.
With Esun water-based or oily based cos flux, booster the best performance. With many users all around the world such as Leoch,{},Chloride,Fengfan, Nandu etc. Here attached some photos and video for your reference.
Feature of the cos flux
Contains acid and neutral flux, excellent activity. It is suitable for pole group casting and welding of lead acid battery, such as medium and small density, electric vehicle and medium and large density automobile.
Model EL6000 is suitable for simplex and four-station machines of major domestic mainstream equipment.
The performance of EL6000A is close to that of TBS No.6 water-based flux, and the solidification phenomenon does not occur at low temperature, the welding porosity is small, and the contact surface between the pole and the bus is obviously crawled.
● Suitable for automatic casting and welding of pole ear produced by casting plate and drawing plate process
● Improve welding quality, no missing pieces, false welding
● High bonding strength and low porosity
