JPS62114706A - Rolling installation - Google Patents

Abstract

PURPOSE:To improve the quality of rolled products and to expand the kinds thereof by changeably and buildably providing 4-high horizontal rolls or 2-high horizontal roll and universal rolls to one unit of a rolling mill stand. CONSTITUTION:A bearing box 5 having a projection 5a is provided to a housing 3 on one side of a rolling stand and the 4-high horizontal rolls mill 13 is built into the stand by retaining fittings 3a. The bearing box 12 on one side of the 2-high horizontal roll mill 4 is made attachable and detachable to and from the housing 3 by a horizontal roll bearing holder 11. The other bearing box 10 is made attachable thereto in an unlocked state. Both horizontal roll bearing box and vertical roll bearing box 21, 22 are made drawable laterally by a carriage from the housings 2, 3 in the case of the universal mill 24. High draft reduction is made possible by the above-mentioned method, by which the quality of the product is improved. Since various kinds of rolls are usable, the kinds of the products are expanded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to improvements in rolling (mill) equipment.

Conventional technology Conventional rolling mills are universal mills that combine upper and lower horizontal rolls and left and right vertical rolls for finishing rolling of H-section steel.
In addition, in the case of round steel, angle shape steel, and channel steel rolling, a two-high rolling mill with two horizontal rolls is used, and in the case of flat plate rolling, a two-high or four-high rolling mill with two to four horizontal rolls is used. Rolling mills and the like are capable of incorporating dedicated rolls into each type of rolling mill, and there is no one that allows multiple types of rolls to be incorporated into the same rolling mill stand core.

Problems to be Solved by the Invention As mentioned above, conventional rolling mills have difficulty in assembling multiple types of rolls into the same rolling mill stand, due to the accuracy of the rolling mill stand and rolled material, rolling power, blowing characteristics, and difficulty in assembling. It has been considered difficult in various aspects such as maintenance. For this reason, the conventional rolling mill is a universal mill.

This is a universal mill that has only been used in combination with uHigh rolling mill.2) There is no example where gH1gh rolls can be incorporated into the same rolling mill stand in addition to igh mill.

The present invention solves these problems by making it possible to incorporate multiple types of rolls into seven rolling mill stands, thereby expanding the range of products and types that can be rolled, as well as reducing rolling power. The purpose is to improve product dimensional accuracy and shape.

Means for Solving the Problems The present invention will be explained below with reference to FIGS. 1 to 9 corresponding to embodiments. Work rolls (61, +6
1 Pick-up roll (7), (7) Horizontal roll of glue book, or one horizontal roll L81- (91
ヲ、Horizontal roll bearing box head installed on the housing (2) side and horizontal roll bearing box holding device (
6) for attachment and detachment.

A 4tHi roll mill (up to) or a JHi roll mill α4 is constructed by mounting the shaft across a horizontal roll bearing box @ which is held so that it can be moved and adjusted in the horizontal axis direction.
To), universal mill roll that combines αQ and vertical roll α force, (to), horizontal roll bearing box αl, (1)
and an inner stand with a vertical roll bearing box @, @
) to both housings (2) of the rolling mill stand (1).
1=(1 is provided in 31 so that one can be replaced and incorporated into each other to constitute a universal mill@).

This inner stand @ is attached to the inner stand presser A (3a) on the - side housing (3) of the rolling mill stand t1).
), and there is a horizontal roll bearing box holding device @ at the side end of the inner stand (to) that allows you to attach and remove the horizontal roll bearing box and to adjust the horizontal roll bearing box length according to the length of the horizontal roll bearing box. This allows for horizontal movement adjustment.

(1) and @ are roll spacing adjusting and holding devices for vertical rolls (b) and (to).

Work roll f61 shown in Figure 1 (B). (Q film rolling mill (4t) incorporating four horizontal rolls: 61, backup rolls (7), and (7) (i-roll mill (13)
When configuring, pass the rolled material several times to create wide flat steel,
Ideal for rolling medium and thick plates.

As shown in Figure 2 (q, 0), there are two horizontal rolls (upper and lower) (8
), (9) When a λ film rolling mill (2Hi roll mill α4) is constructed, horizontal rolls with several rows of holes formed in the horizontal rolls (8) and (91) are used to reduce the distance between the rolls. Depending on the hole shape, round steel, angle steel, channel steel, etc. can be rolled and formed.

Also, the horizontal roll (toward) as shown in Figure 3 (E), (?),
When a universal mill is constructed by incorporating (to) and vertical rolls αη and (to), H-beam steel can be rolled.

The rolling machine of the present invention can easily incorporate multiple types of rolls into one rolling stand, and can be used as a 4tHt roll mill in addition to a universal mill and jHi roll mill, expanding the range of rolling products. I can do it.

Example Figure 7 and (B) show seven rolling mill stands (1) l
c This shows a step rolling mill ('lHi roll 1k) Q3 that incorporates 4 horizontal rolls, with small diameter work rolls (6
1, (61 and large diameter backup roll (7), (
7) is incorporated. These rolls are mounted on both sides of the housing (2), (3) as shown in the figure.
Supported by Hs roll bearing boxes (4) and (5), 4 on one side
The tHi roll bearing box (6) has a protrusion (5a) and a holding fitting (
3a), it is mounted so as not to move in the axial direction, and the other 4tHi roll bearing box (4) is not fixed in place so that it can move somewhat in response to the thermal expansion of the roll.

Figures 2 (q) and (D) show a single-stage pressure W1. machine (-2Hi roll mill) α4 in which one horizontal roll +81. , These horizontal rolls (F8) and (9) use rolls in which a caliber for rolling round steel, angle steel, channel steel, etc. is formed between the rolls.Furthermore, these horizontal rolls (8) ), one horizontal roll bearing box supporting (9) @
The legs 02 are attached to the housing (3) of the rolling mill stand (1).
a) and attachment/detachment operation by the horizontal roll bearing holding device surface;
It is supported so that it can be moved to some extent in the horizontal axis direction, and the other horizontal roll bearing box σG is provided so as not to lock when inserted into the housing (2).

Figure 3 (flat and (F)) is an explanatory diagram showing the same rolling mill stand (1) with universal mill rolls installed and the arrangement of the rolls. )2σ13 is installed in the housings f21 and +31 C of the rolling mill stand (1) via the inner stand (c) as shown in Figures Q to S.
A) is the inner stand holding bracket, and by removing this, the inner stand (c) will be damaged by the horizontal roll bearing box.

(1) and the vertical roll bearing box @, □□□ can be pulled out from inside the housings (2) and (3) to one side via a trolley. Also, one horizontal roll bearing box j is equipped with a horizontal roll bearing box holding device (toward) that allows for adjustment of the inner stand's insertion and removal and movement in the horizontal roll axis direction to some extent. ＠ is a holding device that holds the vertical roll bearing box ＠ in a predetermined position, and there is a hook rod at the side end of the inner stand ＠.
In some cases, the hook rod can be removed and the hinge can be opened centering on the hinge, allowing for installation and removal in a vertical roll or an alpha direction.

Effects of the Invention As mentioned above, the present invention enables the incorporation of 4 (Hi rolls) in addition to the conventional universal mill, so that the roll diameter can be selected for each rolled product, product type, and size. Effects can be obtained.

/-a) 7' rate (plate) When rolling, 4Hia-
(b) A large diameter backup roll can be used.

Product dimensional accuracy and shape are greatly improved.

C) Since high-pressure hinge rolling is possible, the internal quality and impact value of the rolled product can be improved.

Benefits such as:

! -a) Since 1JHi rolls can be used during plate rolling, mill rigidity (increased roll strength) is greatly improved with respect to rolling force, and centerless rolling is possible. In other words, by using the centerless rolling method, the life of the rolls is extended.

b) Roll costs are reduced.

C) There are advantages such as shortening roll change time and improving work efficiency.

Furthermore, by extending the life of the rolls, there are advantages such as the reduction in work at the roll shop and the reduction in the number of rolls in stock.

Furthermore, the present invention provides a stand that can incorporate many types of rolls into one rolling mill stand. One variety can be expanded.

[Brief explanation of drawings]

FIG. 1 (5) and (B) show &H in the rolling equipment of the present invention.
Explanatory drawing and roll arrangement diagram when installing i-roll, g, 2 (q
, (D) is an explanatory diagram and roll arrangement diagram when the same 2Hi roll is installed, Figure 3 (uniform), (F') is an explanatory diagram and roll arrangement diagram when the same universal roll is installed, and Figure 4 is A cross-sectional plan view when the universal mill is configured, a sectional view taken along the Y-T line in Fig. IIs Fi, and a sectional view taken along the Z-Z line in Fig. 3. Fig. 7 is a sectional view taken along the S-8 line in Fig. 3. Fig. 9 is a sectional view taken along the line 8 of the 114th box, and Fig. 9 is a sectional view taken along the line T-T of Fig. 2 (q). (1)...Rolling mill stand, (2), (3)・・Housing, +41. (5)・・Horizontal roll bearing box, (6
), (7), +81, (9)...Horizontal roll, α(J,
! 124. u*, (to)...Horizontal roll bearing box, (21
), fJ...vertical roll bearing box, (to)...inner stand, G11. (To)...Horizontal roll bearing box holding device,
G3 j-'AHi O-lumilou (14)...
2Hi. - Lumir, (c)...Universal Mil. Figure 4 Figure 5 Figure 8 Figure 9

Claims (1)

[Claims] 1. A two-stage horizontal roll (2Hi roll) or a four-stage horizontal roll (4Hi roll) is installed on one rolling mill stand according to the rolling schedule, respectively, through a horizontal roll bearing box attached to the housing of the stand. The roll for a universal mill, which is supported and also combines a horizontal roll and a vertical roll, is equipped with an adjustment and holding device for the horizontal roll bearing box and the vertical roll bearing box, and is rolled through an inner stand that can be installed and removed within the housing. Rolling equipment characterized by being installed in a machine stand so that they can be replaced and installed.