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Profile finishing, the outstanding point is straightening
Release time:
2023-02-17
There are two kinds of technology for profile finishing after rolling, one is the traditional hot saw cutting and straightening process, and the other is the newer long ruler cooling, long ruler straightening and cold saw cutting process.
There are two kinds of technology for profile finishing after rolling, one is the traditional hot saw cutting and straightening process, and the other is the newer long ruler cooling, long ruler straightening and cold saw cutting process.
Profile finishing, the outstanding point is straightening. The straightening difficulty of profile is greater than that of plate and pipe, for the following reasons: first, in the cooling process, the bending caused by asymmetry of section and uneven temperature is large; Second, the section coefficient of the profile is large, and the straightening force is needed. Because the section of the rolling piece is relatively large, so the straightening machine roll distance must also be large, straightening the blind area is large, in some conditions, the use of steel caused a great impact, such as: heavy rail straightening blind area significantly reduced the full length of the heavy rail flatness. To reduce the straightening blind area, the measure on the equipment is to use the variable intercept straightener, and the measure on the process is the long ruler straightening.
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