CN203695598U

CN203695598U - Square steel rolling mill unit

Info

Publication number: CN203695598U
Application number: CN201320644562.0U
Authority: CN
Inventors: 王靖宇; 孙睿哲; 袁爱兵; 宁世柱
Original assignee: Baotou Iron and Steel Group Co Ltd
Current assignee: Baotou Iron and Steel Group Co Ltd
Priority date: 2013-10-18
Filing date: 2013-10-18
Publication date: 2014-07-09
Anticipated expiration: 2023-10-18

Abstract

The utility model discloses a square steel rolling mill unit which comprises three continuous rolling mills, wherein an inlet guide and an outlet guide of a first rolling mill adopt slide guides; inlet guides of a second rolling mill and a third rolling mill adopt roll guides, and outlet guides adopt slide guides; and the structure of each roll guide comprises a guide inlet plug-in component, guide wheels and a box body, the guide inlet plug-in component and the guide wheels are arranged on two opposite sides of the box body respectively, the guide inlet plug-in component is fixed on the side wall of the box body, and the guide wheels are fixed on guide wheel fixing parts. According to the square steel rolling mill unit, capacity of conventional rolling mill equipment is effectively developed and utilized, the investment cost is saved, and 152*152 mm square steel and 150*150 mm square steel can be effectively manufactured through rolling.

Description

Square steel milling train group

Technical field

The utility model relates to a kind of square steel rolling mill practice, specifically, relates to a kind of square steel milling train group.

Background technology

The conventional rolling groove technique of square steel generally has two kinds.

The first be on reversing bloomer take square square steel or rectangle steel billet as raw material, by one or more box-shapeds hole on blooming mill, and the axially alternately distortion of one or more square opening passes, thereby rolling meets the square steel of dimensional requirement.This rolling mill practice is generally the rectangular bloom that former material base is rolled in box-shaped hole to flat (can in pass one go two passages of a rolling), then with lifting finger, the rectangular bloom after rolling is turned over to send into after turning 90 degrees in square opening, to be rolled into square steel.According to final size requirement, can be on bloom roll box-shaped hole and the square opening of turning varying number, by above method back and forth rolling and turn over steel after enter different shaped jet holes, thereby complete the extensional of metal, finally meet finished size requirement.

The second is on continuous rolling mill, and take square square steel as raw material, by being alternately distributed the rolling deformation of pass series of diamond hole in different frames, square opening composition, thereby rolling meets the square steel of dimensional requirement.This rolling mill practice is nipped before first milling train at former material base, middle square steel must be turned over to steel 45 and spend, thereby make the bight of raw material intermediate blank aim at the mode in the first pass bight milling train of nipping.Nip after first diamond hole, square intermediate blank is rolled into diamond shape, and next rolling mill and first milling train are 90 degree layouts (being called " Li-Ping " or " Ping-Li " alternately arranges), rhombic rolling parts enters in second square pass, the major axis of rolled piece is subject to form after square groove rolling square, and then enter next frame diamond pass, so alternately rolling, the final square steel that meets dimensional requirement that forms.

So in prior art, adopting case square groove system rolling 150 × 150mm square steel and 152 × 152mm square steel on continuous rolling mill is a market vacancy, does not have suitable technique.

Utility model content

The technical problem that the utility model solves is to provide a kind of square steel milling train group, has effectively utilized the ability of existing milling equipment, has saved cost of investment.

Technical scheme is as follows:

A kind of square steel milling train group, comprises three tandem rolling mills, and the inlet guide of first milling train and outlet guide adopt sliding guide; The inlet guide of the second rolling mill and the 3rd rolling mill adopts rolling guide, and outlet guide adopts sliding guide; The structure of described rolling guide comprises guide and guard import plug-in unit, directive wheel and box body; Described guide and guard import plug-in unit and described directive wheel are separately positioned on two opposite faces of described box body, and described guide and guard import plug-in unit is fixed on the sidewall of described box body, and described directive wheel is fixed on directive wheel fixture.

Further: the design of section of rolling mill of described three tandem rolling mills all adopts box pass.

Further: described three tandem rolling mills adopt φ 700 milling trains.

Further: in φ 700-1V pass, roll groove minimum widith is that bottom land width is 166mm, and Breadth Maximum is that width of rebate is 185.6mm, and pass height is 175mm, and the fillet radius of pass is 25mm, and the round radius of pass is 20mm, and roll gap is 20mm; In φ 700-2H pass, pass bottom land width is 170mm, and pass width of rebate is 190mm, and pass height is 146mm, and the fillet radius of pass is 20mm, and the round radius of pass is 20mm, and roll gap is 20mm; In φ 700-3V pass, pass bottom land width is 146mm, and pass width of rebate is 161mm, and pass height is 150mm, and the fillet radius of pass is 18mm, and the round radius of pass is 15mm, and roll gap is 10mm.

The utility model effective exploitation, utilize the ability of existing milling equipment, saved cost of investment, and can effectively roll out 152 × 152mm square steel and 150 × 150mm square steel.

Accompanying drawing explanation

Fig. 1 a is the φ 700-1V pass figure of rolling 150 × 150mm square steel and 152 × 152mm square steel in the utility model;

Fig. 1 b is the φ 700-2H pass figure of rolling 150 × 150mm square steel and 152 × 152mm square steel in the utility model;

Fig. 1 c is the φ 700-3V pass figure of rolling 150 × 150mm square steel and 152 × 152mm square steel in the utility model;

Fig. 2 is the structure chart of inlet guide in the utility model.

The specific embodiment

Rolling 150 × 150mm square steel and 152 × 152mm square steel, it is blank that pass design belongs to, and in order to adapt to the needs in market, our designed, designed, chosen pass and the guide and guard of rolling 150 × 150mm and 152 × 152mm.

As shown in Figure 1a, be the φ 700-1V pass figure of rolling 150 × 150mm square steel and 152 × 152mm square steel in the utility model; As shown in Figure 1 b, be the φ 700-2H pass figure of rolling 150 × 150mm square steel and 152 × 152mm square steel in the utility model; As shown in Fig. 1 c, be the φ 700-3V pass figure of rolling 150 × 150mm square steel and 152 × 152mm square steel in the utility model;

One, pass design

Calculate by the intensity to tandem rolling roll and motor, the rolling mill practice of 150 × 150mm square steel adopts three tandem rollings of φ 700 milling train.Calculate pass basic size according to theory, and proofread and correct based on experience value, obtain following rolling rolling schedule and pass figure.Three φ 700 design of section of rolling mill all adopt box pass.

φ 700-1V pass: pass bottom land width is 166mm, pass width of rebate is 185.6mm, and pass height is 175mm, and the fillet radius of pass is 25mm, and the round radius of pass is 20mm, roll gap is 20mm.

φ 700-2H pass: pass bottom land width is 170mm, pass width of rebate is 190mm, and pass height is 146mm, and the fillet radius of pass is 20mm, and the round radius of pass is 20mm, roll gap is 20mm.

φ 700-3V pass: pass bottom land width is 146mm, pass width of rebate is 161mm, and pass height is 150mm, and the fillet radius of pass is 18mm, and the round radius of pass is 15mm, roll gap is 10mm.

150 × 150 square steel rolling rolling schedules

152 × 152mm square steel and 150 × 150mm square steel pass figure share.By adjusting the feed of φ 850 milling trains and adjusting the mode of φ 700 mill roll-gaps, change push-and-pull relation, adjust continuous rolling constant, obtain finished product 152 × 152 square steel.

Two, guide and guard design

Square steel milling train group comprises three tandem rolling mills, and the inlet guide of first milling train and outlet guide adopt sliding guide, and the inlet guide of the second rolling mill and the 3rd rolling mill adopts rolling guide, and outlet guide adopts sliding guide.

As shown in Figure 2, be the structure chart of inlet guide in the utility model.Take φ 700 milling trains as example, inlet guide, the outlet guide of φ 700 milling train 1# cars use 3# car inlet guide, the outlet guide of original rolling φ 150, are sliding guide.In order to prevent scratch, torsion, the inlet guide of φ 700 milling train 2#, 3# car adopts rolling guide, is box body and the assembling of φ 160/5V guide and guard import plug-in unit of RE230 model, and outlet guide adopts sliding guide.

The structure of rolling guide comprises: guide and guard import plug-in unit 1, directive wheel 2, box body 3; Wherein, guide and guard import plug-in unit 1 and directive wheel 2 are separately positioned on two opposite faces of box body 3, and guide and guard import plug-in unit 1 is fixed on the sidewall of box body 3, and directive wheel 2 is fixed on directive wheel fixture 4.

Claims

1. a square steel milling train group, comprises three tandem rolling mills, and the inlet guide of first milling train and outlet guide adopt sliding guide, it is characterized in that: the inlet guide of the second rolling mill and the 3rd rolling mill adopts rolling guide, and outlet guide adopts sliding guide; The structure of described rolling guide comprises guide and guard import plug-in unit, directive wheel and box body; Described guide and guard import plug-in unit and described directive wheel are separately positioned on two opposite faces of described box body, and described guide and guard import plug-in unit is fixed on the sidewall of described box body, and described directive wheel is fixed on directive wheel fixture.

2. square steel milling train group as claimed in claim 1, is characterized in that: the design of section of rolling mill of described three tandem rolling mills all adopts box pass.

3. square steel milling train group as claimed in claim 2, is characterized in that: described three tandem rolling mills adopt φ 700 milling trains.

4. square steel milling train group as claimed in claim 3, is characterized in that: in φ 700-1V pass, pass bottom land width is 166mm, pass width of rebate is 185.6mm, and pass height is 175mm, and the fillet radius of pass is 25mm, the round radius of pass is 20mm, and roll gap is 20mm; In φ 700-2H pass, pass bottom land width is 170mm, and pass width of rebate is 190mm, and pass height is 146mm, and the fillet radius of pass is 20mm, and the round radius of pass is 20mm, and roll gap is 20mm; In φ 700-3V pass, pass bottom land width is 146mm, and pass width of rebate is 161mm, and pass height is 150mm, and the fillet radius of pass is 18mm, and the round radius of pass is 15mm, and roll gap is 10mm.