Method of and apparatus for rolling sheet steel profiles of different cross-sectional shape in universal beam rolling mill trains
AssigneeSchloemann-Siemag Aktiengesellschaft
InventorHeinz Muckli
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Abstract
Sheet steel profiles are rolled in a rolling line including a number of rolling mills. The starting material is first reduced and shaped conventionally in successive mills, and then the final rolling takes place initially by preliminary bending of the sheet steel profiles to the starting (first pass) shape. At this stage, the interlocking joint portion of the profiles are given a shape suitable for the finished profile. The finishing pass is then performed to give the profile cross-section its finished dimensions. All these final rolling operations take place continuously and in one direction.
Claims11
An improvement in a method of rolling steel sheet profiles of different cross-sectional shape in universal beam rolling mill trains wherein starting material is rolled in a two-high reversing ingot rolling mill, in a two-high reversing preliminary rolling mill, and in at least one universal rolling mill having an associated flange edging mill, rolling taking place in each instance by means of reversing operation and in plural sequences of passes, the material then being rolled to the final finishing profile in a following finishing rolling mill, the improvement comprising the following steps taking place continuously an unidirectionally:
- initially preliminary bending the material profile to a starting shape with interlock joints and inner profiles;
- shaping the interlock joints and the inner profiles suitably for the final profile;
- and
- subsequently performing a final finishing pass in which the cross-section of the sheet profile is dimensioned and shaped to its final profile.
Apparatus for rolling steel sheet profiles comprising, in sequence:
- a two-high reversing ingot rolling mill, a two-high reversing preliminary rolling mill, at least one universal rolling mill having an associated flange edging mill which operates in reverse mode, a preliminary bending unit, an edging mill, and a universal finishing rolling mill, the mills being arranged in a continuous rolling line in the sequence stated.
Dependencies are inferred from the claim text.