CN108672493A - A kind of hot drawing formula milling method - Google Patents

Abstract

The invention discloses a kind of hot drawing formula rolling mill practice methods, mainly in a kind of the first rolling mill of the roughing of section rolling to the hot drawing formula rolling mill practice used between the 4th frame.The present invention mainly by the second frame or third rolling mill use head threading after the completion of ramp type venting roll torque method, making the second frame or third rolling mill, main motor becomes light condition operation during the rolling process, applies the rolling work that hot drawing mode completes entire rolled piece to it by follow-up milling train.After the present invention, whole milling trains, which actively enable rolling mill practice method, can save electric energy 8~12%, while can preferably reduce the guide and guard loss for implementing rack.

Description

A kind of hot drawing formula milling method

Technical field

The present invention relates to a kind of hot drawing formula milling methods.

Background technology

The section rolling process applied in existing tradition rolling technique, is primarily present roughing section in the operation of rolling The practical mill current very little of milling train, there is also by follow-up milling train dragging questions and roughing mill region during actually rolling for main motor The big problem of guide and guard waste.

Invention content

The purpose of the present invention is to provide a kind of hot drawing formula milling methods, and whole milling trains are actively enabled Rolling mill practice method can save electric energy 8~12%, while can preferably reduce the guide and guard loss for implementing rack.

The object of the present invention is achieved like this, and a kind of hot drawing formula milling method is mainly used for the first of bar and shape mill Milling train completes section rolling between the 4th rolling mill, and this method comprises the following steps：

Presetting roll-force, roll torque, the mill speed for all participating in milling train is completed by traditional rolling mill practice；

Workpiece front end, which is completed, by traditional rolling mill practice shuts out last rack；

After workpiece front end shuts out last 3~5m of rack, a wherein rolling mill for the second rolling mill and third rolling mill is with ramp system Venting main motor roll torque retains remaining whole rolling parameter and continues to participate in the rolling for completing follow-up rolled piece to light condition Work.

After such rolling mill practice method, the second rolling mill or third rolling mill is made to be pierced by last rack in workpiece front end Its roll torque is unloaded as light condition with ramp system afterwards, it is drawn by follow-up milling train and completes the rolling work of remaining rolled piece Make.

In this subsequent operation of rolling, because be unloaded roll torque correspond to the roll-force of milling train, roll cooling element, The rack is set to become hot drawing type milling method under conditions of the main rolling factors such as rolling groove, extension element are constant.Compared with Than existing traditional rolling mill practice method, the main motor for being unloaded roll torque no longer additionally enables so as to save motor ginseng With most of electric energy in the operation of rolling.

Again because the milling train for being unloaded roll torque becomes for hot drawing type milling method, and direct reduces this The guiding load of rolling mill guiding, to save the guide and guard waste in roughing region again.

Description of the drawings

Fig. 1 is the schematic diagram of the present invention.

Specific implementation mode

As shown in Figure 1, a kind of hot drawing formula rolling mill practice method of the present invention, it is mainly used for the first rolling mill 2 of bar and shape mill to the Section rolling is completed between four rolling mills 5, this method comprises the following steps：

Presetting roll-force, roll torque, the mill speed for all participating in milling train is completed by traditional rolling mill practice.

1 head of rolled piece, which is completed, by traditional rolling mill practice shuts out last rack.

After 1 head of rolled piece shuts out last 3~5m of rack, wherein the one of the second rolling mill 3 and third rolling mill 4

Rolling mill, to light condition, and is retained remaining whole rolling parameter and continues to join with ramp system venting main motor roll torque With the rolling work for completing follow-up rolled piece.

So-and-so bar mill after applying the present invention by data statistics in 1 year after, compared with than saving electricity before input after input Energy 12.5%, while saving guide and guard cost depletions 2.5%.

Claims (1)

1. a kind of hot drawing formula milling method, the first rolling mill for being mainly used for bar and shape mill completes proximate matter between the 4th rolling mill Rolling, it is characterised in that this method comprises the following steps：

Presetting roll-force, roll torque, the mill speed for all participating in milling train is completed by traditional rolling mill practice；

Workpiece front end, which is completed, by traditional rolling mill practice shuts out last rack；

After workpiece front end shuts out last 3~5m of rack, a wherein rolling mill for the second rolling mill and third rolling mill is with ramp system Venting main motor roll torque retains remaining whole rolling parameter and continues to participate in the rolling for completing follow-up rolled piece to light condition Work.