CN202910089U

CN202910089U - Finish rolling descaling box pinch roll

Info

Publication number: CN202910089U
Application number: CN 201220565583
Authority: CN
Inventors: 史乃安; 谷春阳; 丛志宇; 张华�; 刘威; 董金彪; 张智勇
Original assignee: Angang Steel Co Ltd
Current assignee: Angang Steel Co Ltd
Priority date: 2012-10-30
Filing date: 2012-10-30
Publication date: 2013-05-01
Anticipated expiration: 2022-10-30

Abstract

The utility model relates to a finish rolling descaling box pinch roll which comprises a roll barrel. The end portions of the roll barrel are conical faces, the middle section of the roll barrel is sine curved face, and the height of the sine curved face is 0.05-0.3mm. The finish rolling descaling box pinch roll has the advantages of being good in water sealing effect, and capable of saving production cost and prolonging the service cycle of the descaling box pinch roll.

Description

A kind of finish rolling De-scaling box pinch roll

Technical field

The utility model relates to the hot-strip production technical field, relates in particular to a kind of finish rolling De-scaling box pinch roll and control method thereof.

Background technology

When the De-scaling box of intermediate blank before entering finishing mill that shuts out from roughing mill carries out de-scaling, flow out in order to prevent that de-scaling water from moving along the intermediate blank upper surface to intermediate blank in the other direction, a pair of pinch roll is set behind descaling header, general cylinder or the hydraulic cylinder of adopting imposes a fixing pressure to pinch roll, make itself and intermediate blank close contact, see Fig. 2.

Use the initial stage at pinch roll, it is better that pinch roll roll surface and intermediate blank are fitted, and can effectively seal de-scaling water.But, use latter stage at pinch roll, because wearing and tearing can produce larger slit between intermediate blank and the pinch roll, the wider slit of intermediate blank is larger.At this moment, de-scaling water will flow out backward from the slit between pinch roll and the intermediate blank.Because the flow velocity of water is very fast, the side spray before the pinch roll purges water and the lip-deep water of intermediate blank can not be blown off at all.When the lip-deep residual water of intermediate blank flows to thermometal detector HMD surveyed area, can affect thermometal detector HMD detects, make the flying shear back-end crop be forbidden (the too large lumber recovery that affects of back-end crop, back-end crop is too little can not remove afterbody defective or low-temperature space fully), produce the misoperation signal and have an accident (card is cut) when serious.In the winter time, the residual water on intermediate blank surface forms steam, and the outstanding phase of this problem is serious.After this problem of generation, limited by the repair time, can not change immediately.

Summary of the invention

For overcoming the deficiencies in the prior art, the purpose of this utility model provides a kind of finish rolling De-scaling box pinch roll and control method thereof, and by improving the pinch roll roll shape curve, water sealing effect is good, saves production cost.

For achieving the above object, the utility model is achieved through the following technical solutions:

A kind of finish rolling De-scaling box pinch roll comprises the body of roll, and body of roll end is taper surface, and body of roll stage casing is sine surface; The sine surface height is 0.05～0.3mm;

Compared with prior art, the beneficial effects of the utility model are:

By improving the pinch roll body of roll, adjust the pressure of pinch roll two ends hydraulic cylinder, make intermediate blank and pinch roll remain close contact, water sealing effect is good, save production cost, avoided being forbidden the problems such as flying shear misoperation that cause and the life cycle that has prolonged the De-scaling box pinch roll because thermometal detector HMD detects.

Description of drawings

Fig. 1 is pinch roll body of roll schematic diagram of the present utility model.

Fig. 2 is that pinch roll is arranged schematic diagram.

Among the figure: 1-thermometal detector 2-flying shear 3-pinch roll 4-dephosphorization collector 5-intermediate blank.

The specific embodiment

Below in conjunction with Figure of description the utility model is described in detail, but should be noted that enforcement of the present utility model is not limited to following embodiment.

See Fig. 1, a kind of finish rolling De-scaling box pinch roll comprises the body of roll, and body of roll end is taper surface (L1 part among Fig. 1), and body of roll stage casing is sine surface; The sine surface height is H2 part among 0.05～0.3mm(Fig. 1);

See Fig. 2, for prevent de-scaling water along intermediate blank 5 upper surfaces to intermediate blank 5 operations flow out in the other direction, pinch roll 3 is installed in descaling header 4 rear flying shears 2 before, adopt cylinder or hydraulic cylinder that pinch roll is imposed a fixing pressure, make itself and intermediate blank 5 close contacts.

Embodiment one:

See Fig. 1, transform the pinch roll roll shape curve, pinch roll barrel diameter D is 600mm, overall length L2200mm, and two ends conical surface length L 1 is 500mm, height of conical surface H1 is 1mm, sine surface height H 2 is 0.2mm in the middle of the body of roll, the body of roll is installed on the pinch roll use initial stage, because the body of roll is shuttle shape, so need to impose larger pressure at the two ends roll shaft, be generally 500-600kN, along with the interaction of the body of roll and intermediate blank, the increase of body of roll wear extent, the operating personnel adjusts the pinch roll shaft end pressure at any time according to the middle blanket 6 faces situation of leaking, and the pressure that is added on the pinch roll axle head will reduce gradually, use latter stage at pinch roll, the pinch roll shaft end pressure adopts 50-100kN, for enhancing productivity, when shaft end pressure is lower than 150kN, to be ready in advance standby roller, prepare to change.

Embodiment two:

See Fig. 1, transform the pinch roll roll shape curve, pinch roll barrel diameter D is 600mm, overall length L1780mm, two ends conical surface length L 1 is 400mm, height of conical surface H1 is 0.9mm, sine surface height H 2 is 0.15mm in the middle of the body of roll, the body of roll is installed on the pinch roll, at the use initial stage, need to imposes larger pressure at the two ends roll shaft, be generally 500-600kN, along with the interaction of the body of roll and intermediate blank, the increase of body of roll wear extent, the operating personnel is according to the intermediate blank 5 plate faces situation of leaking, adjust at any time the pinch roll shaft end pressure, the pressure that is added on the pinch roll roll shaft will reduce gradually, uses latter stage at pinch roll, and the pinch roll shaft end pressure adopts 50-100kN, for enhancing productivity, when shaft end pressure is lower than 150kN, be ready in advance standby roller, prepare to change.

Embodiment three:

See Fig. 1, transform the pinch roll body of roll, pinch roll barrel diameter D is 600mm, overall length L1580mm, two ends conical surface length L 1 is 350mm, height of conical surface H1 is 0.8mm, sine surface height H 2 is 0.1mm in the middle of the body of roll, the body of roll is installed on the pinch roll, at the use initial stage, need to imposes larger pressure at the two ends roll shaft, be generally 500-600kN, along with the interaction of the body of roll and intermediate blank, the increase of body of roll wear extent, the operating personnel is according to the intermediate blank 5 plate faces situation of leaking, adjust at any time the pinch roll shaft end pressure, the pressure that is added on the roll shaft will reduce gradually, uses latter stage at pinch roll, and the pinch roll shaft end pressure adopts 50-100kN, for enhancing productivity, when shaft end pressure is lower than 150kN, be ready in advance standby roller, prepare to change.

The utility model is by improving the pinch roll roll shape curve, adjust the pressure of pinch roll two ends hydraulic cylinder, make intermediate blank and pinch roll remain close contact, water sealing effect is good, save production cost, avoided being forbidden the problems such as flying shear misoperation that cause and the life cycle that has prolonged the De-scaling box pinch roll because thermometal detector HMD detects.

Claims

1. a finish rolling De-scaling box pinch roll is characterized in that, comprises the body of roll, and described body of roll end is taper surface, and body of roll stage casing is sine surface.

2. a kind of finish rolling De-scaling box pinch roll according to claim 1 is characterized in that the sine surface height is 0.05～0.3mm.