Applied comprehensively with theories of slit rolling and idea of CARD, the object-oriented technology and the database function of Visual Basic 6.0, the sophisticated function of AutoCAD in graph manipulation, this CARD system is provided with higher intelligent degree and good practicability.
The paper introduces the application of the pass and guide device for the Φ12 mm,Φ14 mm and Φ16 mm rebar of the two splitting rolling,the splitting rolling improves the output capacity and reduces the costs.
Based on production and practice,the high precision control of round bar slitting rolling can be realized by reasonable design of the guide and guard. Some design measures as following:(1)to adopt double-row guide roll structure as entry guide; (2)to adopt twisting structure with angle ±0.5° as twisting guide;
Io order to increase output,basing on present processes,The Forging Plant of Laigang develops the two-strand split rolling to produce Φ16mm hot-rolled ribbed bar by designing the finish passes and its guide fittings.