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AUFRAME Grid Technology

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Introduction

Continue Casting Direct Rolling Technology (CCDR) is a steel rolling process in which liquid steel is poured into a continuous casting machine to cast a billet (called continuous casting billet) and then rolled directly into a hot rolling unit without cooling after holding in a heating furnace for a certain period. This technology cleverly combines the casting and rolling process, compared with the traditional casting billet after the heating furnace heating and then the rolling process has the advantages of simplifying the process, improving labor conditions, increasing the metal yield, saving energy, improving the quality of continuous casting billet, and facilitating mechanization and automation.

Core Technology
------Automotive Punching Technology

 punching technology uses specific Continuous Casting and Rolling technology and equipment to manufacture lead strips. It then expands the lead strips through different punching equipment to make a Continuous mesh grid with a characteristic mesh structure. Since multiple Continuous rolling processes make the Continuous lead strip, a fine and high-density metal grain structure occurs in the lead strip during production.

1

High strength, strong power and
increased starting power

Good conductivity, highway design circuit path,
faster current transmission

2

AUVOLTER EXPANDED METAL GRID

OTHER EXPANDED METAL GRID

AUVOLTER EXPANDED METAL GRID

OTHER EXPANDED METAL GRID

2

Good conductivity, highway design circuit path,
faster current transmission

AUVOLTER EXPANDED METAL GRID

EXPANDED METAL GRID

3

Optimize design of the frame, and reduce
corrosion of the grid greatly

The grid is light in weight, improve the specific
capacity of battery energy

4

4

The grid is light in weight, improve the specific capacity of battery energy

Continue Casting Direct Rolling Equipment

The automatic production line of continuous casting and rolling mainly consists of continuous casting machine, soaking furnace, hot continuous rolling unit and laminar cooling.

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Equipment Advantages

Save Space Rescue Labor

The production capacity of a set of CCDR equipment is equivalent to 18 sets of gravity casting equipment. It saves over 50% energy, and the operators is reduced to 1 /10.

Less Input Higher Conductivity

Since the thickness of the grid made by Punching can be less than 0.8mm, its weight is lightening 20-40% while maintain the same level of performance

Technical Process

Continuous Casting Direct Rolling (CCDR) and Punching

1.Continuous Casting
2. Direct Rolling
3. Punching
4.Punched Lead Mesh Strip
5. Continuous Coating

The Product of CCDR

--------AUFRAME Grid

AUFRAME adopts the latest AUFRAME Grid technology in the industry, a battery with good high-temperature resistance, a more compact structure, and stronger corrosion resistance. High density, good electrical conductivity, stereoscopic grid structure, lead paste fixed more firmly, longer service life, more energy-saving, and more environmentally friendly.

The Advantage Of AUFRAME Grid

  • The performance of the AUFRAME grid is better, with good high-temperatureresistance and strong corrosion resistance (with casting stamping technology, the structure is compact and corrosion resistant).
  • High density and good electrical conductivity.
  • Stereoscopic grid structure, the lead paste fixed more firmly, longer service life, more energy-saving, and more environmentally friendly.
  • Both the Expanded metal grid and AUFRAME grid belong to the Continue Casting Direct Rolling production line. The AUFRAME grid technology is improved based on the Expanded metal grid.
  • The AUFRAME grid can be stored in sulfuric acid for 2 years without damage, but the casting grid will not work. Therefore, our AUFRAME start-stop car battery can be guaranteed for 2 years).

The Grid Microstructure

From the comparison of the metallographic structure of the positive grid, it can be found that the grain structure of the continuous casting and rolling positive grid is more refined, and a large number of fine metallographic structures can be observed. Grain refinement helps to slow down the intergranular penetration corrosion of the grid, and is beneficial to enhance the bonding strength of the grid and the lead paste.

Traditional GC grid Microstructure 

CCDR grid Microstructure

Compared With Traditional Crafts

The CCDR Grid (by Punching), tensile strength, hardness, and corrosion resistance are better. The internal structure is more compact, and the grains are more refined and uniform. The microstructure is improved (The defects such as bubbles, shrinkage holes, porosity, and casting cracks on the surface and inside the grid are reduced).

Every internal corner of the grid in the frame is kept consistent, strong, and flexible structure. It’s easier to make grids of various thicknesses according to technical requirements.

CCDR Items

VS

Other Products

Difference between 3 types of production technology

The products of the same model (same structure, exact cost) are produced by Gravity, Expanded, CCDR technology.

The specific data are shown in the table below

The products of the same model (same structure, exact cost) are produced by Gravity, Expanded, CCDR technology.

Conclusion

Continuous casting and continuous grids have obvious advantages in electrochemical corrosion resistance and mechanical properties because of fewer microstructure defects and more refined and uniform grains and are suitable for clean and efficient production. Therefore,  the excellent performance of the continuous casting and continuous grid makes it the first choice for the positive grid of the start-stop battery.

Frequent Start and Stop up to

Larger capacity with quick charge and discharge,5 times the service life of conventional batteries

Capacity greater than the nominal value of

Large battery capacity, reserve capacity (25A discharge test) is 1.2 times greater than the nominal

Extend service life

Ultra-long service life, coping with frequent start and stop system easily

Charging speed increased by

Adopt unique lead-carbon technology formula and new lead alloy formula, suitable for cars with OPTED start-stop system

Temperature resistance increased by

Stable performance, high and low-temperature resistance.40℃-70℃ can be used commonly; -18℃ low temperature start (CCA) exceeds the national standard value; Room temperature start (CA) increases by 20%

Internal resistance is lower than the national standard by

Adopting a high tin alloy plate (with higher tin content) reduces internal conduction loss, and impedance is 15% lower than the national standard.