CN1325180C

CN1325180C - Method of continuously hot rolling a heated billet into a plurality of finished products

Info

Publication number: CN1325180C
Application number: CNB2005100893553A
Authority: CN
Inventors: T·M·肖尔
Original assignee: Morgan Construction Co
Current assignee: Metal technology America Limited
Priority date: 2004-07-29
Filing date: 2005-07-29
Publication date: 2007-07-11
Anticipated expiration: 2025-07-29
Also published as: BRPI0503101B8; BRPI0503101B1; RU2302913C2; RU2005124116A; CN1733377A; BRPI0503101A

Abstract

A billet (10) is initially rolled into a process section (30) having at least first and second segments (32,34) joined by an intermediate web (36), with the cross-sectional area of the second segment (34) being larger than that of the first segment (32). The intermediate web (36) is slit to separate the first and second segments (32,34), and the thus separated segments are simultaneously rolled into finished products (28,48) having different cross-sectional areas.

Description

Hot blank Continuous Heat is rolled into the method for a plurality of finished products

The cross reference of related application

The application requires to be set forth in the priority of No. the 60/592nd, 201, the provisional application sequence number on July 29th, 2004.

Technical field

The present invention relates to the hot blank of continuously hot rolling, and described hot blank is cut open in the process that is processed into the finished product such as rod or bar.

Background technology

In traditional Continuous Heat milling train (rolling Fig. 1 that is illustrated in that one is exemplary), a typical blank 10 is heated to about 1050-1150 ℃ temperature at first.In the one group of rolling machine frame 1V-12H/V that arranges along a roll line P1, this blank is rolled into one first then and processes the cross section.Shown in Fig. 2 A, the first processing cross section 12 has two parts 14 laterally disposed, that equal cross-sections is long-pending, and one first middle connecting plate 16 links together them.

Please again referring to Fig. 1, first connecting plate 16 cuts with separate section 14 in 18 places in the position, then divided portion 14 is guided into independently roll line P ₂, become the second processing cross section 20 with continuous rolling in rolling machine frame 13H-16H/V.Shown in Fig. 2 B, each second processing cross section also has two parts 14 laterally disposed, that equal cross-sections is long-pending, and one second middle connecting plate 24 links together them.

At 26 places, position as shown in Figure 1, cut second connecting plate 24 with separate section 22, then divided portion is guided into independently roll line P _3a-P _3d, in the some or all of rolling machine frame 17-24 of finishing block (finishing blocking) " M ", to be rolled into finished product 28.

Because being cut into, processing

cross section

12 and 20 has the long-pending part of equal cross-sections, so each feeding of finishing block is identical cut-away portions 22.This has seriously limited has the given roll hole shape design and the fertile product scope of milling train of guide device.Be used for describing, for example suppose that whole blank 10 is of a size of 160 * 160mm, cross-sectional area is 26,322mm, and then part 14 of Qie Kaiing and 22 respective cross section are long-pending is 32.4mm just ²And 15.6mm ²

With reference to Fig. 3, and will be arranged on roll line P _3aOn finishing block be used as an example, can obtain following rolling sequence and final products:

Rolling sequence Finished size (diameter)

17-24 6.3mm

17-22 8mm

17-20 10mm

17-18 12.5mm

In order to produce other products, milling train is shut down, and reconfigure the roll hole shape simultaneously and change guider.

Summary of the invention

A main purpose of the present invention be widen significantly in the milling train that adopt to cut with a given roll hole shape configuration can roll out the scope of product simultaneously.

A purpose of following of the present invention is to realize the aforementioned production rate per hour that can also increase milling train when widening product scope.

According to the present invention, at first a hot blank is rolled into a kind of like this processing cross section, this processing cross section have at least by a middle connecting plate connect, laterally disposed first and second parts, and the cross-sectional area of second portion is greater than the cross-sectional area of first.Then, cut connecting plate to separate first and second parts.Then first is rolled into the product size of one first scope, and side by side second portion is rolled into the bigger product size of one second scope.

Description of drawings

The present invention is now described with reference to the accompanying drawings in further detail, in all accompanying drawings:

Fig. 1 is the rolling figure that adopts a milling train of traditional incision technology;

Fig. 2 A and 2B are the profiles in the milling train shown in Figure 1 processing cross section of producing;

Fig. 3 is the rolling figure of one of finishing block shown in Figure 1;

Fig. 4 is the rolling figure that adopts a milling train of incision technology of the present invention;

Fig. 5 A and 5B are the profiles in the milling train shown in Figure 4 processing cross section of producing; And

Fig. 6 is the rolling figure of one of roll line shown in Figure 4.

The specific embodiment

According to the present invention, and as shown in Figure 4, along a roll line P ₁Hot blank 10 with aforementioned type among the one group of rolling machine frame 1V-12H/V that arranges is rolled into one first processing cross section 30.But, different with aforesaid processing cross section 12 with the long-pending part 14 of equal cross-sections shown in Fig. 5 A, that processing cross section 30 has is 36 that connect by a middle connecting plate, first and second long-

pending parts

32,34 of iso-cross-section not.

Connecting plate 36 cuts with

separate section

32,34 in 38 places, position in Fig. 4.Less part 32 is directed into a roll line P ₂, at roll line P ₂In, it is rolled into one second processing cross section 40 in rolling machine frame 13H-16H/V.As shown in Fig. 5 B, the shape in the second processing cross section 40 is traditional, has by one second middle connecting plate third part 42 44 connections, that equal cross-sections is amassed.Connecting plate 44 cuts to separate third part 42 in 46 places in the position.Then third part 42 is directed to roll line P shown in Figure 1 _3aAnd P _3b, it is rolled into finished product 28.

In third part 42 at roll line P _3a, P _3bRolling machine frame in when being processed to finished product 28, the part 34 of bigger incision is directed into a roll line P independently ₄, in order to be rolled into wider finished product 48.

Be used for once more describing, suppose the blank 10 that enters with identical, and suppose that the cross-sectional area of first and

second parts

32,34 of cutting is respectively 30mm with reference to the described blank of Fig. 1 10 ²And 40mm ², and the cross-sectional area of the 3rd part 42 of cutting be 15.6mm ²Under such size, roll line P _3a, P _3bThe finished product of being produced 28 will be roughly the same with aforesaid those products, that is have 3.6,8.0,10.0 or 12.5mm in the round bar of arbitrary diameter.But, as shown in Figure 6, when at roll line P ₄When going up rolling bigger cut-away portions 34, can obtain rolling sequence and finished product as described below:

Rolling sequence Finished size (diameter)

13-22 12.0mm

13-20 16.0mm

13-18 20.0mm

13-16 25.0mm

13-14 32.0mm

13-22 14.0mm

13-20 18.0mm

13-18 22.0mm

13-16 28.0mm

Therefore as seen, by initial rolling and cut hot blank 10, just those parts further can be processed into the finished size of different range then to produce the divided

portion

32,34 that iso-cross-section not amasss.Need not milling train to be shut down and just can realize such flexibility in order to reconfigure roll hole shape and change guider.

The major part 34 in processing cross section 30 also can increase the introducing speed of blank, and this just can advantageously improve the production rate per hour of milling train.

In view of aforesaid content, should be understood that, above-mentioned processing cross section and rolling figure only be according to the present invention some examples of adoptable processing cross section and rolling figure, basic thought of the present invention is that the processing cross section is cut at least two not long-pending parts of iso-cross-section, and the part that will cut like this is rolled into the finished size of different range simultaneously then.

I require following protection domain.

Claims

1. one kind becomes the method for the finished product of different size with blank continuous rolling, and described method comprises:

Described blank is rolled into one first processing cross section, and this first processing cross section has first and second parts that connected by a middle connecting plate at least, and the cross-sectional area of described second portion is greater than the cross-sectional area of described first;

Cut described connecting plate to separate described first and second parts; And

First and second parts of so separating side by side are rolled into have the long-pending finished product of varying cross-section.

2. the method for claim 1 is characterized in that, one of described first and second parts are rolled into one second processing cross section, and this second processing cross section has the third part of the equal cross-sections that is connected by one second middle connecting plate; Cut described second middle connecting plate to separate described third part; And the third part that will so separate is rolled into described finished product.

3. the method for claim 1 is characterized in that, on first roll line described blank is rolled into described first and processes the cross section, and independently on the second and the 3rd roll line described first and second parts of separating are being rolled into described finished product simultaneously.