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15. What are the replacement steps of the mold copper tube and the factors that affect the service life?

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The replacement steps of the copper tube of the mold:

1. Loosen the bolts between the lubrication plate, the upper sealing flange and the housing.

2. Remove the top plate and lubricating plate (do not damage the O-ring inside).

3 Rotate the maintenance stand by 90-180° and loosen the bolts between the lower bottom plate (or lower sealing flange) and the housing. Remove the copper tube and key board from the water jacket; remove the key board to the left and right sides; slowly remove the copper tube.

4. Clean the joint surface related to the copper tube of the mold, and remove oil, scale and other debris

 

Factors affecting the service life of the copper tube of the mold:

1.The quality of the mold itself

1) The influence of copper tube design parameters. The design parameters of the mold copper tube mainly refer to the material, coating, inner cavity curve, fillet radius, etc., which directly determine the service life of the copper tube.

2) Mold maintenance. The quality of mold maintenance is also the main reason that affects its life. The key process of repairing quality is the adjustment of water joints. If the water joints around the copper pipes are uneven, it will directly lead to uneven cooling of the copper pipes and cause deformation and damage.

 

2. The influence of process conditions and operation

1) Mold lubrication.

2) The influence of the times of steel drawing. The number of times the steel is drawn will directly expand the copper tube, which will cause the copper tube to generate stress, yield and permanently deform, and affect the service life of the copper tube.

3) Amplitude influence.

 

3. Cooling water condition

Water quality is another factor that strongly affects the temperature and deformation of the crystallizer wall.

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As professional one-stop solution provider, LIAONING MINERAL & METALLURGY GROUP CO., LTD(LMM GROUP) Established in 2007, and focus on engineering research & design, production & delivery, technology transfer, installation & commissioning, construction & building, operation & management for iron, steel & metallurgical industries globally. 

Our product  have been supplied to world’s top steel manufacturer Arcelormittal, TATA Steel, EZZ steel etc. We do OEM for Concast and Danieli for a long time.

LMM Main product series

Core technology products:

  • magnesia carbon brick
  • slide gate plate
  • graphite electrode

Core technology products:

  • Hss roller
  • cast steel rolls
  • tungten carbide ring roller

Core technology products:

  • copper mould tube
  • copper mould plate
  • assembly & cooling jackts

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