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COOPER MOULD TUBE (CMT)
Description:
Copper mould tube is placed in the hearth position of continuous casting machines (CCM), its function is to receive the molten steel and allow rapid heat transfer from the steel to the cooling water to enable quick solidification, therefore, the copper mould must have below features:
Size table:
Type |
Size/mm |
Camber Radius |
Wall thickness/mm |
Length/mm |
Remark: |
Square copper tube |
50x50~650x650 |
3000~17000 & Straight |
6~50 |
602~1100 |
Design with single taper, |
Rectangular copper tube |
70~550x110~720 |
3000~17000 & Straight |
6~50 |
602~1100 |
|
Round copper tube |
100~1200 |
5000~17000 & Straight |
10~50 |
602~900 |
Design with double tapers, |
Beam blank copper tube |
535~150x120~70 |
6000~14000 |
12~50 |
700~1016 |
triple tapers, multi-taper, |
Materials grade:
TP2 (GB/T5231-2001)=SF-Cu/DHP-Cu (DIN1787)
Phosphorus de-oxidized copper
It shows excellent heat-proof and antifatigue property under high temperature and has good processing property, thus is chosen by most of steel plants. The alloy has been proven to be excellent for the manufacture of moulds in the continuous casting of billets.
CuAg0.1 (GB/T5231-2001)=Tg0.1=DPS-Cu ((DIN1787)
Adding 0.08%-0.12% silver during copper ingots melting will increase the recrystallization temperature by 100°C, which will increase the heat stress and anti-abrasive property of copper mould tube interior surface, showing better heat-resistant property than TP2.
This alloy is normally used in moulds for the continuous casting of blooms and slabs. In this case, the mould’s are much thicker than in the billet moulds, and the mould’s temperature can be higher.
Cu-Cr-Zr
Copper alloys can be normalized by time. It has excellent mechanical property under both room temperature and high temperature, also high heat conductivity, melting point, antifatigue and anti-heat stress properties. It combines all good properties together, however, compared with other copper alloys, Cu-Cr-Zr is difficult to be formed and also cost higher.