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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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