CN2470018Y

CN2470018Y - Improved roller-shape pinch roll of coiling machine

Info

Publication number: CN2470018Y
Application number: CN 00223750
Authority: CN
Inventors: 薛国洪; 李俊清; 杜和来
Original assignee: HOT-ROLLING PLATE PLANT PANZHIHUA NEW STEEL VANADIUM Co Ltd
Current assignee: HOT-ROLLING PLATE PLANT PANZHIHUA NEW STEEL VANADIUM Co Ltd
Priority date: 2000-07-19
Filing date: 2000-07-19
Publication date: 2002-01-09
Anticipated expiration: 2010-07-19

Abstract

The utility model relates to a roller, which is mainly composed of an upper roller and a lower roller, wherein a working section is cylindrical; optimizing sections on two ends are conical; the conical busbar and the axial line of the conical optimizing section form a half cone angle Beta, and the Beta is between 1.5 degrees and 2.5 degrees, and the half cone angle Beta s of the upper roller is less than or equal to the half cone angle Beta x of the lower roller; the length of the conical optimizing section is Ly and the total length of a pinch roller is L, and the length Ls of the optimizing section of the upper roller is more than or equal to the length Lx of the optimizing section of the lower roller, and the value of 2* Ls divided by L is between 30 percent to 40 percent and the value of 2* Lx divided by L is between 20 percent to 30 percent. The utility model can improve the quality of the surface of the product and the winding plate with low cost and wide application.

Description

The coiling machine pinch roll of improvement roll forming

The utility model relates to a kind of roll, particularly a kind of coiling machine pinch roll of improveing roll forming.

Existing steel rolling coiling machine pinch roll, its up-down rollers body of roll is shaped as cylindrical straight roller, uses body of roll middle part, wearing and tearing back promptly to form one section Baltimore groove, and the body of roll and band steel contact-making surface to be rolled are diminished, and service behaviour descends, and effect is batched in influence.And because the body of roll is laid particular stress on two ends to the pressure of band steel, easily produce the steel bonding accident, cause that belt steel surface scratches or the impression defective, the working roll life-span is short.

The purpose of this utility model is to provide two kinds to have from the correction of the flank shape ability, operating rate height, the coiling machine pinch roll of the improvement roll forming of long service life.

Technical solution of the present utility model is: a kind of coiling machine pinch roll of improveing roll forming, constitute by top roll and lower roll, and top roll and lower roll middle part active section are cylindrical, it is conical that section is optimized at two ends.

The semi-cone angle β that the element of cone of the two terminal circle of pinch roll described in technique scheme taper optimization section and axis constitute spends between 2.5 degree 1.5, and top roll semi-cone angle β s is less than or equal to lower roll semi-cone angle β x.

It is Ly that segment length is optimized in the taper of the two terminal circle of pinch roll described in the technique scheme, and the pinch roll total length is L, and then top roll is optimized segment length Ls and optimized segment length Lx more than or equal to lower roll, and 2*Ls/L is between 30-40%, and 2*Lx/L is between 20-30%.

The semidiameter of cylindrical active section in middle part of pinch roll described in the technique scheme and two terminal circle taper optimization section miner diameter end is the built-up welding layer thickness H, and this overlay cladding is high hardness alloy or quench-hardened case, and lower roll overlay cladding thickness Hx is greater than top roll overlay cladding thickness Hs.

The product that optimization segment length Ly of pinch roll described in the technique scheme and pinch roll semi-cone angle β get after the tg value equals pinch roll built-up welding layer thickness H ± 1 millimeter value, i.e. Ly*tg β=H ± 1mm.

The processing roughness of the cylindrical active section of the body surface of pinch roll described in the technique scheme is 0.4 to 0.8 micron, and the conical processing roughness of optimizing section is 0.8 to 1.6 micron.

The coiling machine pinch roll of the utility model improvement roll forming, its body of roll in use can remain good roll forming and duty, and because of band steel two ends do not contact with the body of roll, can improve product surface quality, avoid defectives such as steel bonding, scuffing, thereby improve the roll bending quality, can effectively prolong service life of structure.This device manufacturing process is simple, and is with low cost, can be widely used in the pinch roll roll forming optimization of similar operating modes such as hot strip rolling line, cold rolling line, finishing line.

Accompanying drawing is the structural representation of the coiling machine pinch roll of the utility model improvement roll forming.

Embodiment:

Referring to accompanying drawing, the utility model coiling machine pinch roll mainly is made of top roll 1 and lower roll 2, and top roll 1 and lower roll 2 middle part active sections are cylindrical, and it is conical that section is optimized at two ends.The semi-cone angle β value of pinch roll two terminal circle taper optimization section can be spent between 2.5 degree 1.5, and top roll 1 semi-cone angle is less than or equal to lower roll 2 semi-cone angle, and getting top roll 1 semi-cone angle 3 in the present embodiment is 1.5 degree, and lower roll 2 semi-cone angle 4 are 2.5 degree.The pinch roll total length is 5, it is Ly that segment length is optimized in its two terminal circle taper, then top roll 1 is optimized segment length 6 and should be optimized segment length 7 more than or equal to lower roll 2, and the 2*6/5 value should be between 30-40%, the 2*7/5 value should be between 20-30%, getting 5 in the present embodiment is 1450 millimeters, and 6 is 300 millimeters, and 7 is 200 millimeters.The cylindrical active section of pinch roll is the built-up welding layer thickness H with the conical semidiameter of optimizing the section miner diameter end, lower roll 2 overlay cladding thickness 8 should be greater than top roll 1 overlay cladding thickness 9, getting 8 in the present embodiment is 8.73 millimeters, and 9 is 7.86 millimeters, and this overlay cladding is high hardness alloy or quench-hardened case.The diameter 10 of the top roll 1 cylindrical active section of pinch roll is got 915 millimeters in the present embodiment in addition, the diameter 11 of lower roll 2 cylindrical active sections is got 510 millimeters, the processing roughness of pinch roll top roll 1 and the cylindrical active section of lower roll 2 body surfaces is 0.8 micron, and the conical processing roughness of optimizing section is 1.6 microns.

The utility model coiling machine pinch roll in the course of the work, after the cylindrical active section in body of roll middle part is worn, still keep glacing flatness preferably, has stronger adaptation wearing and tearing ability, influence the roller life-span and be unlikely to produce groove at body of roll middle part, and the body of roll does not contact with the strip edge edge in the use, has avoided pinch roll to glue the meat phenomenon.In the pinch roll use, should note simultaneously forbidding to batch low-temperature steel, steel scrap and folding steel, in order to avoid damage the body of roll.

Claims

1. a coiling machine pinch roll of improveing roll forming is made of top roll and lower roll, it is characterized in that: top roll and lower roll middle part active section are cylindrical, and it is conical that section is optimized at two ends.

2. the coiling machine pinch roll of improvement roll forming as claimed in claim 1, it is characterized in that: the semi-cone angle β that the element of cone of pinch roll two terminal circle taper optimization section and axis constitute spends between 2.5 degree 1.5, and top roll semi-cone angle β s is less than or equal to lower roll semi-cone angle β x.

3. the coiling machine pinch roll of improvement roll forming as claimed in claim 1, it is characterized in that: it is Ly that segment length is optimized in the taper of pinch roll two terminal circle, the pinch roll total length is L, then top roll is optimized segment length Ls and is optimized segment length Lx more than or equal to lower roll, and 2*Ls/L is between 30-40%, and 2*Lx/L is between 20-30%.

4. the coiling machine pinch roll of improvement roll forming as claimed in claim 1, it is characterized in that: the semidiameter of pinch roll cylindrical active section in middle part and two terminal circle taper optimization section miner diameter end is the built-up welding layer thickness H, this overlay cladding is high hardness alloy or quench-hardened case, and lower roll overlay cladding thickness Hx is greater than top roll overlay cladding thickness Hs.

5. the coiling machine pinch roll of improvement roll forming as claimed in claim 1 is characterized in that: the product that pinch roll optimization segment length Ly and pinch roll semi-cone angle β get after the tg value equals pinch roll built-up welding layer thickness H ± 1 millimeter value, i.e. Ly*tg β=H ± 1mm.

6. the coiling machine pinch roll of improvement roll forming as claimed in claim 1 is characterized in that: the processing roughness of the cylindrical active section of pinch roll body surface is 0.4 to 0.8 micron, and the conical processing roughness of optimizing section is 0.8 to 1.6 micron.