CN201824255U

CN201824255U - Supporting roll

Info

Publication number: CN201824255U
Application number: CN2010205836996U
Authority: CN
Inventors: 段明南; 李山青
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2010-10-29
Filing date: 2010-10-29
Publication date: 2011-05-11
Anticipated expiration: 2020-10-29

Abstract

The utility model discloses a supporting roll which comprises a main roll, and a plurality of sub-rolls. Two ends of the main roll are respectively provided with a spindle; the length of the surface of the main roll is matched with the width of a metal plate strip produced; the plurality of sub-rolls are respectively sheathed and connected with the spindles at two ends of the main roll in series. The supporting roll can adapt to the supporting requirements of the metal plate strips under different width specification requirements, and has excellent working stability and durability. Moreover, when the supporting roll needs to be replaced, the sub-rolls can be directly replaced, and the whole supporting roll does not need to be wasted; therefore, the quantity and specifications of standby rolls are remarkably reduced, and the costs of standby parts are greatly reduced.

Description

A kind of backing roll

Technical field

The utility model belongs to the technical field of backing roll overall construction design, and the roller class that the metal plate and belt when being mainly used in employing ejection physics de-scaling mode carries out mechanical support provides a kind of backing roll.

Background technology

Metal material can form the fine and close covering that one deck is made up of metal oxide on the surface in hot rolling or heat treatment process, be commonly called as " firecoat ", the existence of this firecoat can impact further processing processing: make the surface crack of material be difficult for being found in advance on the one hand, thereby make the finished product that processes have quality problems; Easily firecoat is pressed into the metal surface on the other hand, causes surface quality problems; In addition, the existence of hard oxide can be quickened the wearing and tearing of roll or drawbench.

In order to eliminate the influence of oxide to the metallic article quality, simultaneously based on the current environmental pollution index of strict control in the world, the manufacturing enterprise of metallic article progressively by original pure wet chemistry de-scaling mode to transition fast such as the physical mechanics de-scaling mode of environmental protection more, hydrogen reduction de-scaling mode, ultrasonic wave de-scaling mode, plasma de-scaling modes.This wherein, physical mechanics de-scaling mode is to use one of the most ripe technique of scale removal at present, wherein general in high velocity jet de-scaling mode especially, the essence of this technology is that to utilize the high pressure generation systems be that liquid medium reaches some high pressure conditions, export it to spraying system by pressure duct then, eject to the target thing via nozzle, utilize the high speed souring of the mixture of liquid medium or liquid and solid to realize quick removing the metal plate and belt surface attachments.Yet washing away the stable of process meta assurance scouring effect, usually must carry out certain tensioning and physical support to metal plate and belt, this continuous production period of metal plate and belt that is supported on, because the quick switching of specification causes backing roll to become direct injection object usually, cause backing roll extremely short service life, have a strong impact on the direct motion of physics de-scaling operation.

Based on this, domestic and international employing physical mechanics mode is retrieved the patent that metal plate and belt cleans de-scaling, the material manufacturing work of the U.S. as can be known (being called for short TMW company) discloses a series of at metal plate and belt surface clean technology after calendar year 2001, U.S. Pat 20080108281 (A1) for example, US20080182486 (A1) and US20090227184 (A1) etc., all disclose a kind of abrasive material and mixed mud of water of utilizing and carried out jet cleaning, when how this class patent all carries out excellent support to metal plate and belt less than narration, do not relate to concrete backing roll supporting construction type yet; In addition, U.S. Pat 5388602 high pressure water jet cleaning device are primarily aimed at various continuous casting billet and carry out de-scaling, and its support function requires to require difference huge with the support function of metal plate and belt, does not have comparativity; Japan Patent JP05092231A, JP09085329A and JP2002102915 etc. all adopt the application occasion of high-pressure water jet de-scaling only to be the forging base during hot steel billet or the forging.

Summary of the invention

The purpose of this utility model provides a kind of backing roll, adapts to the support requirement under the specification requirement of metal plate and belt different in width, possesses good operation stability and durability; And when need changing, then directly should change by sub-roller, and whole backing roll need not be scrapped, significantly reduced the quantity and the specification of roller fully, greatly reduced the spare unit cost.

For achieving the above object, the technical solution of the utility model is,

A kind of backing roll, it comprises, a home roll, mandrel is established at its two ends respectively; The width coupling of home roll roll surface length and the metal plate and belt produced; The experimental process roller, sheathed respectively, be series on the mandrel at described home roll two ends.

Further, described sub-roller symmetrical respectively sheathed, be series on the mandrel at described home roll two ends, the sub-roller number that install both sides is equal fully.

Again, two ends are taper about the described sub-roller.

Described sub-roller two ends up and down is the pyramidal structure of symmetry.

In addition, the roll surface of home roll described in the utility model be shaped as straight roll surface or, positive convexity roll surface.

The utility model backing roll employing home roll is connected with a plurality of sub-rollers, realizes the excellent support to the different size metal plate and belt, improves the service life and the job stability of backing roll.

In actual production process, supplied materials metal plate and belt width is narrower when running into, as when reaching the minimum widith specification, because the roll surface width of the width value of metal plate and belt and home roll is in full accord, therefore the sub-roller of both sides can't contact with metal plate and belt, and can both uniformly clean for guaranteeing metal plate and belt dual-side portion and middle part this moment, then the medium of the spraying system of dual-side portion injection always can slightly surpass metal plate and belt dual-side portion boundary, so promptly causes the ejection medium above the metal plate and belt border directly to impinge upon on the roll surface of sub-roller; And this moment, because sub-roller has the rational inclination conical surface, ejection medium at a high speed is tilted the conical surface and decomposes, the medium impulsive force that causes conical surface surface to be born weakens greatly, even there is part high velocity jet medium to inject directly on the conical surface thus, sub-roller still possesses good resistance to impact, work that can be continual and steady.

When certain the sub-roller that is connected on the home roll both sides because the souring of high speed medium causes its significant function breakage, and when needing to change, then directly should change by sub-roller, and whole backing roll need not be scrapped, so promptly significantly reduce the quantity and the specification that are equipped with roller, greatly reduced the spare unit cost.

Description of drawings

Fig. 1 is the stereogram of the utility model backing roll one embodiment.

Fig. 2 gets cutaway view for the utility model backing roll one embodiment.

Fig. 3 is the enlarged diagram of the utility model backing roll one examples of implementation roller.

Fig. 4 is the schematic diagram of the utility model when narrow specification metal plate and belt sprays de-scaling.

Fig. 5 is the schematic diagram of the utility model when wide specification metal plate and belt sprays de-scaling.

The specific embodiment

Referring to Fig. 1 ~ Fig. 3, backing roll of the present utility model, it comprises, a home roll 1,

mandrel

11,12 is established at its two ends respectively; The width coupling of home roll 1 roll surface length and the metal plate and belt produced; Experimental process roller 2,2 ', sheathed respectively, be series on the

mandrel

11,12 at described home roll 1 two ends.

In the present embodiment, described sub-roller 2,2 ' symmetrical respectively sheathed, be series on the

mandrel

11,12 at described home roll 1 two ends, 6 sub-rollers are respectively installed in both sides.

In addition, the roll surface of home roll 1 described in the utility model be shaped as straight roll surface or, positive convexity roll surface.

Design the roll surface width value of home roll 1 in the backing roll based on the steel plate width minimum of a value of the employed production line of backing roll, simultaneously based on the production line the width value of wide steel plate design the length value of both sides mandrel;

Referring to Fig. 4, Fig. 5, in actual production process, supplied materials metal plate and belt 3 width are narrower when running into, as when reaching the minimum widith specification, because the roll surface width of the width value of metal plate and belt 3 and home roll 1 is in full accord, therefore the sub-roller 2,2 ' of both sides can't contact with metal plate and belt, and can both uniformly clean for guaranteeing metal plate and belt dual-side portion and middle part this moment, then the medium of spraying system 4 injections of dual-side portion always can slightly surpass metal plate and belt dual-side portion boundary, so promptly causes the ejection medium above the metal plate and belt border directly to impinge upon on the roll surface of sub-roller; And this moment, because sub-roller has the rational inclination conical surface, ejection medium at a high speed is tilted the conical surface and decomposes, the medium impulsive force that causes conical surface surface to be born weakens greatly, even there is part high velocity jet medium to inject directly on the conical surface thus, sub-roller still possesses good resistance to impact, work that can be continual and steady.

The utility model makes full use of increase, the injection object surface shape facility of the impact of high velocity jet medium with space length, significantly improve the damage factor of ejection medium to the sub-roller in both sides, realize that backing roll possesses good operation stability, directly improve the service life of backing roll, and reduce the spare unit quantity and the maintenance cost of backing roll.

Claims

1. a backing roll is characterized in that, comprise,

A home roll, mandrel is established at its two ends respectively; The width coupling of home roll roll surface length and the metal plate and belt produced;

The experimental process roller, sheathed respectively, be series on the mandrel at described home roll two ends.

2. backing roll as claimed in claim 1 is characterized in that, described sub-roller symmetrical respectively sheathed, be series on the mandrel at described home roll two ends, the sub-roller number that install both sides is equal fully.

3. backing roll as claimed in claim 1 or 2 is characterized in that, described sub-roller two ends up and down is taper.

4. backing roll as claimed in claim 1 or 2 is characterized in that, described sub-roller two ends up and down is the pyramidal structure of symmetry.

5. backing roll as claimed in claim 1 or 2 is characterized in that, the roll surface of described home roll is shaped as straight roll surface or positive convexity roll surface.