CN202290732U

CN202290732U - Four-roller horizontal roughing mill plain-barreled roll shape for reducing side bend of middle blank

Info

Publication number: CN202290732U
Application number: CN2011204331787U
Authority: CN
Inventors: 张智刚
Original assignee: Xinjiang Bayi Iron and Steel Co Ltd
Current assignee: Xinjiang Bayi Iron and Steel Co Ltd
Priority date: 2011-11-04
Filing date: 2011-11-04
Publication date: 2012-07-04
Anticipated expiration: 2021-11-04

Abstract

The utility model belongs to improvement of a rolling steel four-roller horizontal roughing mill plain-barreled roll shape, in particular to a four-roller horizontal roughing mill plain-barreled roll shape for reducing a side bend of a middle blank, which comprises a roller system arranged on the four-roller horizontal roughing mill and formed by working rollers and supporting rollers, wherein an upper-half-part roller system of the horizontal mill is formed by the working roller with a symmetrical concave roll surface and the matched supporting roller with a convex roll surface; a lower-half-part roller system of the horizontal mill is formed by the working roller with a symmetrical convex roll surface and the matched supporting roller with a concave roll surface; and the concave surface roller of the working roller of the upper-half-part roller system is mutually matched with the convex roll surface of the working roller of the lower-half-part roller system. According to the four-roller horizontal roughing mill plain-barreled roll shape for reducing the side bend of the middle blank, the quality of the shape of the middle blank can be improved, the local side bend defect generated when a head part and a tail part of a plate blank are meshed into the horizontal mill is eliminated, the quality of finished steel coils can be improved, the stability in rolling is increased, and the occurrence of accidents is reduced.

Description

Reduce the horizontal roughing mill plain-barreled roll of the four rollers roll shape of intermediate blank lateral bending

Technical field

The utility model belongs to the improvement of the horizontal roughing mill plain-barreled roll of steel rolling four rollers roll shape structure, particularly reduces the horizontal roughing mill plain-barreled roll of the four rollers roll shape of intermediate blank lateral bending.

Background technology

In existing hot continuous rolling technology, be applied in the plain-barreled roll roll shape in the roughing mill at present, mainly contain the single curve roll shape of single working roll horizontal roller roll shape or working roll.These roll shapes main problem that exists in the operation of rolling is especially under the bigger situation of roughing mill drafts when rolling; The center line of the length direction of rolled piece causes the actual drafts deviation of milling train both sides bigger in the time of can not overlapping with rolling centerline; Make length that made-up belt receives the big side of roll-force greater than receiving the little side of roll-force when rolling in this case, make made-up belt that mass defects such as camber take place.The existence of this defective and cause in the operation of rolling of back operation and increased difficulty, band steel finished product volume still has the defective of lateral bending, has had a strong impact on stability and the quantity of the lateral bending defective that has increased the band steel in the operation of rolling of band steel to a certain extent.

Summary of the invention

The purpose of the utility model is to provide a kind of horizontal roughing mill plain-barreled roll of four rollers roll shape that reduces the intermediate blank lateral bending; Can improve the shape quality of intermediate blank; Eliminate slab end to end the partial side sinus that when nipping horizontal mill, produces of portion fall into; Can improve the quality of finished product coil of strip, increase rolling stability, the generation of minimizing accident.

The purpose of the utility model is achieved in that a kind of horizontal roughing mill plain-barreled roll of four rollers roll shape that reduces the intermediate blank lateral bending; Comprise the roller that constitutes by working roll and the support roller system of installing on the horizontal roughing mill of four rollers, have the first half roller system that support roller that the working roll of symmetrical recessed roll surface and of matching with it has protruding roll surface constitutes horizontal mill by one; Constitute the Lower Half roller system of horizontal mill by a support roller that has the working roll of symmetrical protruding roll surface and match with it one a band concave roll, first half roller is that the concave roll of working roll and convex surface roller that the Lower Half roller is working roll cooperatively interact.

During the utility model work; Mixing up first half roller is that working roll and Lower Half roller are the gap between the working roll; Because the Lower Half roller system of the horizontal mill that of matching with it of the first half roller system of a horizontal mill of forming with the support roller of protruding roll surface with the working roll of symmetrical recessed roll surface and of matching with it and a working roll with protruding roll surface forms with the support roller of recessed roll surface, the working roll of the working roll of the recessed roll surface of first half roller frenulum and the protruding roll surface of Lower Half roller frenulum is can coincide each other again under the situation that has year to roll out the slab that thickness equates in the horizontal plane at milling train integral body roller.

Therefore planting the layout of special roller system during use installs; Roller is that unloaded deformed area is little oval roll shape and helps under the situation of milling train milling train at heavy reduction the function of nipping of slab when band steel toe portion gets into the milling train milling train, the situation of the local lateral bending that takes place when the inconsistent head that causes of friction is nipped of having prevented to nip on the slab head cross section.Whole roller system of rolling mill still presents little oval roll shape system in the deformation of rolled wire district after slab is nipped horizontal mill roller system; Such deformed area distributed architecture has prevented that the bigger situation of rolled piece wedge shape from taking place; Reduced rolled piece and from horizontal mill, shut out shape quality that the camber defective takes place in the back degree and number of times guaranteed intermediate blank and with the precise forming of being with steel finished product coil of strip assurance is provided, also reduced the generation that stability that operating personnel have improved Rolling Production to the adjustment intervention amount of milling train tilt quantity has reduced accident for operation down.Roll shape because of whole milling train all is in the situation of coincideing each other simultaneously, so thereby prevented that in the milling train production process roller from being that the roller that the stressed asymmetric unusual axial force generation that causes has improved milling train is a precision.

After the use of this combined type roll shape of the utility model, the generation of the mass defects such as intermediate blank generation camber that the situation that can effectively solve the band steel entering horizontal roughing mill side-play amount that intermediate blank center line along its length and rolling centerline generation are bigger when rolling causes shutting out.Solved the degree of difficulty of under the bigger situation of drafts, slab being nipped when rolling on the other hand, also effectively prevented the bigger situation of local lateral bending amount that the intermediate blank head takes place when the horizontal roughing mill of entering because of horizontal roughing mill.

The utility model has improved the shape quality of intermediate blank, has eliminated the partial side sinus that slab head, afterbody produce and fall into when nipping horizontal mill, has improved the quality of finished product coil of strip, has increased rolling stability, has reduced the generation of accident.

Description of drawings

To combine accompanying drawing that the utility model is done further to describe below, accompanying drawing 1 is the structural representation of the utility model.

The specific embodiment

A kind of horizontal roughing mill plain-barreled roll of four rollers roll shape that reduces the intermediate blank lateral bending; Shown in accompanying drawing 1; Comprise the roller that constitutes by working roll and the support roller system of installing on the horizontal roughing mill of four rollers, have the first half roller system that support roller 1 that the working roll 2 of symmetrical recessed roll surface and of matching with it has protruding roll surface constitutes horizontal mill by one; Constitute the Lower Half roller system of horizontal mill by a support roller 5 that has the working roll 4 of symmetrical protruding roll surface and match with it one a band concave roll, first half roller is that the concave roll of working roll 2 and convex surface roller that the Lower Half roller is working roll 4 cooperatively interact.Shut out the slab 3 that thickness equates in the horizontal plane between the working roll 4 of the working roll 2 of the recessed roll surface of first half roller frenulum and Lower Half roller frenulum convex surface roller.

Claims

1. the horizontal roughing mill plain-barreled roll of four rollers roll shape that reduces the intermediate blank lateral bending; Comprise that the roller of installing on the horizontal roughing mill of four rollers that is made up of working roll and support roller is it is characterized in that: by a first half roller system that has support roller (1) the formation horizontal mill of protruding roll surface that has the working roll (2) of symmetrical recessed roll surface and match with it; Constitute the Lower Half roller system of horizontal mill by a support roller (5) that has the working roll (4) of symmetrical protruding roll surface and match with it one a band concave roll, first half roller is that the concave roll of working roll (2) and convex surface roller that the Lower Half roller is working roll (4) cooperatively interact.