Bar Rolling Mill Design
Complete project solutions for the hot rolling mill industry pprm has been providing complete project solutions design manufacture mill commissioning for bar rod and section mills for the past 25 years.
Bar rolling mill design. Roll pass design is an essential part of long product rolling process since the long products are rolled between the shaped rolls in the long product rolling mills. This is the first part of video next is coming tomorrow. The whole bar rolling mill line adopts full continuous rolling and non twist rolling and the roughing mill and intermediate mills adopt micro tension rolling. After the 12th rolling mill vertical loopers are set up between the stands to implement tension free rolling thus producing high precision products.
Slit rolling for bar production. Hello friends in this video i have discussed about the roll pass design of rolling mill and it s various key features. In merchant bar mills with conventional rolling rounds and rebars both of them commonly known as bars are produced from billets which are rolled in a sequence of passes through a multi stand rolling mill. A reducing group with 2 roll stands with high reduction is followed by a sizing group with 4 roll stands with low reduction.
The rolling mill mainly consists of roller rolling mill house bearing package bearing workbench rolling guide rail chair roller adjustment device top roll balance device and roller change device driving device cooling bed finishing facilities with cold shear bundling system with bar counter and wire tying machines etc. 2 4 evo bar reducing and sizing mill. Dog bone pass guide multi slit rolling productivity slit pass. Basics of rolling a rolling mill consist of several at least two rolls cylindrical or nearly cylindrical bodies which are termed as roll and which rest in bearings at their ends.
Roll pass design in continuous bar mills 1. With this new design mills were able to produce 15 times more output per day than with a hammer. Lagos nigeria presented by rahul kishore 2. Slit rolling for bar production.
Modern rolling practice can be attributed to the pioneering efforts of henry cort of funtley iron mills near fareham in hampshire england in 1783 a patent was issued to henry cort for his use of grooved rolls for rolling iron bars. The normal and average center distance from the center of one roll to the center of o. Large amount of flexibility is available in modern long products rolling mills. Roll pass design generally means the cutting of grooves in the roll body through which steel to be rolled is made to pass sequentially to get the desired contour and size.
The design of the long product rolling mill is required to provide right solutions for the required performance requirements which include high speed production microstructure qualities of the product and shortest changeover time from one product to other product etc.