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Company news about Water cooling in semi continuous casting: control of casting speed, cooling intensity, and surface segregation zone-5

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Water cooling in semi continuous casting: control of casting speed, cooling intensity, and surface segregation zone-5

2026-10-16

Collaborative Matching of Three Parameters: The True Mystery of Water Cooling Magic

Single parameter optimization cannot solve all problems. The essence of semi continuous casting lies in the dynamic matching of casting speed, cooling intensity, and casting temperature.

Taking the study of 7A60 aluminum alloy ϕ 360mm ingot as an example, a clear parameter influence law is given:

Parameter changes Changes in liquid cavity depth Changes in equiaxed crystal area Main risks
Casting temperature increases↑ 351.8mm → 370.3mm  (deepening) 68442mm² → 57467.8mm² (decreasing) columnar crystal growth, coarse grain size
Casting speed↑ 205.2mm → 638.1mm (rapid deepening) 60567.8mm² → 50511.3mm² (decreasing) Remelting and leakage risks
 Cooling intensity↑ Liquid cavity becomes shallower  - temperature gradient increases, solidification accelerates


The engineering inspiration of this set of data is that the casting temperature should be controlled within a narrow range of 50-70 ℃ above the alloy liquidus line. If it is too high, it will promote columnar crystals, while if it is too low, it will increase oxidation slag inclusion; The casting speed should match the cooling intensity - when the cooling intensity is high, it can be moderately increased, but it must be ensured that the thickness of the solidified shell at the time of exiting the crystallizer is ≥ the critical value; The cooling intensity should be maximized, but thermal cracking should be prevented - for large-diameter ingots, the strategy of "strong cold start, slow cold steady state" is usually adopted

latest company news about Water cooling in semi continuous casting: control of casting speed, cooling intensity, and surface segregation zone-5 0

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Company news about-Water cooling in semi continuous casting: control of casting speed, cooling intensity, and surface segregation zone-5

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Water cooling in semi continuous casting: control of casting speed, cooling intensity, and surface segregation zone-5

2026-10-16

Collaborative Matching of Three Parameters: The True Mystery of Water Cooling Magic

Single parameter optimization cannot solve all problems. The essence of semi continuous casting lies in the dynamic matching of casting speed, cooling intensity, and casting temperature.

Taking the study of 7A60 aluminum alloy ϕ 360mm ingot as an example, a clear parameter influence law is given:

Parameter changes Changes in liquid cavity depth Changes in equiaxed crystal area Main risks
Casting temperature increases↑ 351.8mm → 370.3mm  (deepening) 68442mm² → 57467.8mm² (decreasing) columnar crystal growth, coarse grain size
Casting speed↑ 205.2mm → 638.1mm (rapid deepening) 60567.8mm² → 50511.3mm² (decreasing) Remelting and leakage risks
 Cooling intensity↑ Liquid cavity becomes shallower  - temperature gradient increases, solidification accelerates


The engineering inspiration of this set of data is that the casting temperature should be controlled within a narrow range of 50-70 ℃ above the alloy liquidus line. If it is too high, it will promote columnar crystals, while if it is too low, it will increase oxidation slag inclusion; The casting speed should match the cooling intensity - when the cooling intensity is high, it can be moderately increased, but it must be ensured that the thickness of the solidified shell at the time of exiting the crystallizer is ≥ the critical value; The cooling intensity should be maximized, but thermal cracking should be prevented - for large-diameter ingots, the strategy of "strong cold start, slow cold steady state" is usually adopted

latest company news about Water cooling in semi continuous casting: control of casting speed, cooling intensity, and surface segregation zone-5 0

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