SU361826A1 - EXTRAWORK MILL - Google Patents

Description

one

Selection-wire mills are known for rolling batches of profiles in a wide range of sizes, containing successively arranged rolling tables bicable groups, output devices from the second (finishing) stand of each group to an additional through roller table parallel to the rolling axis, and receiving devices such as a refrigerator and winders.

The proposed wire-to-wire mill is characterized in that, to simplify operation and enable the transfer of non-stopping rolling stands, the additional through roller conveyor is made as separate sections rotatable in the horizontal plane, corresponding in length to the mill group, with the vertical axis of rotation of each section the front end, and the entire roller conveyor is located on the side of the cage.

FIG. 1 shows the described mill, in plan; in fig. 2-rolling scheme with the release of rolled metal from the third wire group of stands; in fig. 3 - rolling scheme with the release of rolled products from the second grade of stands; in fig. 4-scheme of rolling with the release of rolled products from the first wire group to the refrigerator; in fig. 5 is a rolling scheme with the release of rolled products from the first wire group to a winder; in fig. 6-turn section

roller table; in fig. 7 is the same, view along arrow L on f; i. 6; in fig. 8 is the same, view along arrow A in FIG. 6; in fig. 8 is the same, view along arrow B in FIG. 7

The mill contains stands / first grade group, stands 2 of the second grade group, stands 3 of the third grade group, stands 4 of the fourth grade group, stands of 5 of the fifth grade group, stands 6 of the best grade group, stands 7 of the first wire group, stands 8 of the second wire group , stands of the third wire group 9, Rotary sections of the roller table ha 10, stationary roller table 11, refrigerator 12, conducting devices 13 to the winders

and winder M.

All the stands of the mill are located on the same axis as separate billet groups, which include one pre-pure and one clean cage. Along the mill on one side of the rolling line are located in a series of individual rotary sections of roller conveyors 10, which are a single transport line connected by a stationary roller table 11 with a refrigerator 12. Wire stands 7-9

if necessary, they are connected by means of rotating conductive devices 13 with movable coilers 14.

The rotary section of the roller table 10 has a frame 15 on which the rollers 16 are mounted

roll table The frame rests on one side.

on the hinge axis / 7, and on the other, on the undercarriage 18. The undercarriage of the trolley is equipped with a non-driving wheel 19 and a driving wheel 20 with a traveling drive 21. All the articulated axes 17 are located in a row on one side of the rolling line. Thus, each swivel section of the roller 10 may be installed parallel to or at an angle to the rolling line.

Rolling on the station is carried out as follows.

Before starting work, all the stands are fully transshipped and set up for the rolling of a certain profil or prokat (the whole size range). The technological scheme of the mill is designed so that each stand produces rolled products of a certain cross-sectional area, which is used as a tackle for further processing in subsequent cages to smaller sections or comes out of the finishing stand as a finished profile. For example, with the use of an exhaust oval – circle system (widely used in the production of special steels), a round section with a diameter of 27 mm, produced by the first grade group, can be transferred to the pre-finishing stand 2 of the second group to obtain an oval and obtaining a circle with a diameter of 24 mm, etc., or transferred to the refrigerator as ready products. The technological scheme provides the possibility of performing all the sizes of one profile without mill transshipments.

When rolling a minimum cross section (see Fig. 2), all the stands of the rolling line participate in the work and produce rolling directly on the refrigerator or through the rotary section of the roller table 10 and the rotary conductive device 13 to the coiler 14.

As the transition to rolling larger sections (see Fig. 3), the finished rolled products are produced by the previous bicable groups with the transfer of the rolled products to the refrigerator through the rotary sections of the roller table and the stationary roller table (mine subsequent stands).

The production of rolled products from the second or first wire groups is carried out on the respective turning sections with the subsequent transfer of & a cooler (see fitting 4) or on a winder (see fig. 5).

iB the initial position, all sections of the rotary roller tables are installed in one line. When setting up a mill for a certain size of long products, the corresponding section of the turntable roller table is turned at an angle by turning on the rotation drive.

to the line of the mill; It connects the discharge stand with a line of roller conveyors transferring the rental to the refrigerator.

The setting of the mill for rolling the wire is carried out by placing the respective rotary sections of the roller tables at an angle to the rolling line and setting the conductive devices and wire winders to the working position (see section 5). In this case, the wire discharged from the first wire group of the stands 7 passes the rotary section of the roller table 10, the conductive device 13 and retracts onto the coiler 14. Switching the wiring to one of the two reels is produced by the device embedded in the wiring.

Subject invention

A bar-type cross-wire rolling mill with profiles in a wide range of size Bb, containing successively connected, two-stand groups connected by a roller table, output devices from the second

(finishing) stands of each group to an additional through roller conveyor parallel to the axis of rolling, and receiving devices, for example a refrigerator and winder, characterized in that, in order to control the operation

and ensuring the possibility of transshipment of non-working stands without stopping the mill;

group of the mill, with the vertical axis of rotation of each section passes through its front end, and the entire roller table is located on the side of the stands.

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