BE367520A - - Google Patents

Info

Publication number
BE367520A
BE367520A BE367520DA BE367520A BE 367520 A BE367520 A BE 367520A BE 367520D A BE367520D A BE 367520DA BE 367520 A BE367520 A BE 367520A
Authority
BE
Belgium
Prior art keywords
emi
rolling
gravity
profile
wings
Prior art date
Application number
Other languages
French (fr)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE367520A publication Critical patent/BE367520A/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/095U-or channel sections

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Description

       

   <EMI ID=1.1> 

  
gouttière à ailes larges n

  
La présente invention concerne un procédé de laminage des

  
fers à gouttière et plus particulièrement des fers à gouttière

  
à ailes larges.

  
Lorsqu'on lamine des fers profilés au moyen de laminons

  
dans lesquels le morceau de fer passe successivement entre

  
plusieurs paires de cylindres, calibrés ou cannelés, de manière à prendra successivement des formes se rapprochant progressivement du profil désire, il est très important de veil-1er à ce que le centre de-gravite de la section transversale de chaque profil, correspondant aux cylindres calibrés succes-

  
 <EMI ID=2.1> 

  
 <EMI ID=3.1> 

  
Dans' les fers à gouttière à larges ailes, le centre de gravité CI section se trouve, par contre, très près de l'âme de cette ^section.

  
 <EMI ID=4.1> 

  
importante au point de vue de la technique du laminage et est nécessaire pour obtenir une marche silencieuse du laminoir, on a été obligé d'affaiblir fortement au droit des ailes les cy-

  
 <EMI ID=5.1> 

  
obligé d'utiliser des. cylindrée renforcés et, par conséquent,  très. lourds.

  
D'après la présente invention, des inconvénients sont sup
-primés grâce au fait qu'on maintient , pendant tout le lamina- <EMI ID=6.1> 

  
définitive plane qu'entre les cylindres finisseurs.

  
.Pendant ce dernier laminage de finissage, l'affaiblissement du cylindre ne présente pas la même importance, puisque <EMI ID=7.1> 

  
du cylindre 

  
 <EMI ID=8.1> 

  
ple et d'une manière schématique, un mode de réalisation d'après l'invention... 

  
La figure 1 montre le premier duo de cylindres ébauche-cas vus en élévation latérale; La figure 2 montre également en élévation latérale le deuxième duo de cylindres ébaucheurs et, la figure 3 montre le duo de cylindres finisseurs.

  
 <EMI ID=9.1> 

  
nettement par des parties hachurées.

  
 <EMI ID=10.1> 

  
tient le déplacement du centre de gravité d'après la présente invention, en modifiant le dit profil.

  
Sur les dessins, on a supposé que la fer à laminer passe

  
 <EMI ID=11.1> 

  
par la partie hachurée A sur la figure 1. les formes suivantes,

  
 <EMI ID=12.1> 

  
 <EMI ID=13.1>  figure 3.

  
 <EMI ID=14.1> 

  
 <EMI ID=15.1> 

  
a-a. La ligne de contact parallèle à ees axes passant à égale distance entre ceux-ci et déterminée par les points auxquels se rencontrent les points correspondants des deux cylindres du duo animés de la même vitesse, est indiquée sur les trois <EMI ID=16.1> 

  
Comme on l'a déjà dit plus haut, il est généralement connu dans la technique du laminage que le centre de' gravité des

  
 <EMI ID=17.1> 

  
nière que pendant le laminage les axes de gravité des profils se trouvent dans la plan de la vitesse moyenne antre les deux cylindres.

  
Pour obtenir ce résultat, sans que les cylindres destinés  <EMI ID=18.1>  .'fortement, on donne aux cannelures ébaucheuses. une forme telle <EMI ID=19.1> 

  
 <EMI ID=20.1> 

  
courbure dirigée vers les extrémités des ailes. Cette courbure

  
 <EMI ID=21.1> 

  
que en 9 sur la figure 3.

  
Sur la figure 4 on voit nettement le déplacement du centre de gravité et la réduction du diamètre du cylindre qu'on obtient de cette manierez

  
Sur la figure 4 on a représenté par de gros traits et par ides parties hachurées la forme d'un profil intermédiaire qui correspond sensiblement à la forme du profil J de la figure- 3, On a indiqué par des traits fins la forme qu'aurait possédée

  
 <EMI ID=22.1> 

  
 <EMI ID=23.1> 

  
 <EMI ID=24.1> 

  
Grâce au fait que l'âme de la section est recourbée, comme on

  
 <EMI ID=25.1> 

  
ailes du profil, comme on le voit également sur la figure 4,

  
 <EMI ID=26.1> 

  
 <EMI ID=27.1> 

  
étant effectué vers les extrémités des Ailes sur une longueur

  
 <EMI ID=28.1> 

  
On peut voir facilement que si on procédait de la même

  
 <EMI ID=29.1> 

  
bres ébaucheurs habituels et que, par conséquent, si l'âme de

  
 <EMI ID=30.1> 

  
 <EMI ID=31.1> 

  
 <EMI ID=32.1>  

  
Par conséquent, ce cylindre, pendant le laminage, serait exposé bien davantage à des accidents . 

  
 <EMI ID=33.1> 

  
 <EMI ID=34.1> 

  
dans cette dernière position, voisine du palier de l'arbre du

  
1

  
cylindre, le cylindre considéré en son entier travaillant beau*" coup moins et, par conséquent, Bisquant beaucoup moins d'être endommagé.



   <EMI ID = 1.1>

  
wide wing gutter n

  
The present invention relates to a method of rolling

  
gutter irons and more particularly gutter irons

  
broad winged.

  
When rolling profiled irons by means of laminates

  
in which the piece of iron passes successively between

  
several pairs of cylinders, calibrated or fluted, so as to take successively shapes gradually approaching the desired profile, it is very important to ensure that the center of gravity of the cross section of each profile, corresponding to the cylinders calibrated success-

  
 <EMI ID = 2.1>

  
 <EMI ID = 3.1>

  
In 'gutter irons with wide wings, the center of gravity CI section is, on the other hand, very close to the web of this section.

  
 <EMI ID = 4.1>

  
important from the point of view of the rolling technique and is necessary to obtain a silent operation of the rolling mill, it was necessary to strongly weaken the right side of the wings the cy-

  
 <EMI ID = 5.1>

  
forced to use. engine capacity reinforced and, therefore, very. heavy.

  
According to the present invention, disadvantages are sup
-pressed thanks to the fact that one maintains, during all the lamina- <EMI ID = 6.1>

  
final plane only between the finishing rolls.

  
During this last finishing rolling, the weakening of the cylinder does not have the same importance, since <EMI ID = 7.1>

  
cylinder

  
 <EMI ID = 8.1>

  
ple and schematically, an embodiment according to the invention ...

  
Figure 1 shows the first duo of blank-case cylinders seen in side elevation; FIG. 2 also shows in side elevation the second duo of blanking rolls and, FIG. 3 shows the duo of finishing rolls.

  
 <EMI ID = 9.1>

  
clearly by hatched parts.

  
 <EMI ID = 10.1>

  
holds the displacement of the center of gravity according to the present invention, by modifying said profile.

  
In the drawings, it is assumed that the rolling iron passes

  
 <EMI ID = 11.1>

  
by the hatched part A in figure 1.the following shapes,

  
 <EMI ID = 12.1>

  
 <EMI ID = 13.1> figure 3.

  
 <EMI ID = 14.1>

  
 <EMI ID = 15.1>

  
a-a. The contact line parallel to these axes passing at an equal distance between them and determined by the points at which the corresponding points of the two cylinders of the duo moving at the same speed meet, is indicated on the three <EMI ID = 16.1>

  
As already stated above, it is generally known in the rolling art that the center of gravity of

  
 <EMI ID = 17.1>

  
However, during rolling, the axes of gravity of the profiles are in the plane of the average speed between the two rolls.

  
To obtain this result, without the intended cylinders <EMI ID = 18.1>. 'Strongly, the roughing splines are given. a form such as <EMI ID = 19.1>

  
 <EMI ID = 20.1>

  
curvature directed towards the ends of the wings. This curvature

  
 <EMI ID = 21.1>

  
than at 9 in Figure 3.

  
In figure 4 we can clearly see the displacement of the center of gravity and the reduction in the diameter of the cylinder that we obtain in this way.

  
In Figure 4 there is shown by large lines and ides hatched parts the shape of an intermediate profile which substantially corresponds to the shape of the profile J of Figure - 3, It is indicated by thin lines the shape that would have possessed

  
 <EMI ID = 22.1>

  
 <EMI ID = 23.1>

  
 <EMI ID = 24.1>

  
Thanks to the fact that the soul of the section is curved, as one

  
 <EMI ID = 25.1>

  
wings of the profile, as also seen in Figure 4,

  
 <EMI ID = 26.1>

  
 <EMI ID = 27.1>

  
being carried out towards the ends of the Wings over a length

  
 <EMI ID = 28.1>

  
We can easily see that if we did the same

  
 <EMI ID = 29.1>

  
bres usual sketchers and that, therefore, if the soul of

  
 <EMI ID = 30.1>

  
 <EMI ID = 31.1>

  
 <EMI ID = 32.1>

  
Therefore, this cylinder, during rolling, would be much more exposed to accidents.

  
 <EMI ID = 33.1>

  
 <EMI ID = 34.1>

  
in this last position, close to the bearing of the shaft of the

  
1

  
cylinder, the cylinder considered as a whole working fine * "blow less and, therefore, being damaged much less.


    

Claims (1)

RESUME. <EMI ID=35.1> ABSTRACT. <EMI ID = 35.1> enfin par une cannelure finisseuse établies sur des cylindres des duos successifs, ce procédé étant caractérisé par le fait finally by a finishing groove established on rolls of successive duets, this process being characterized by the fact <EMI ID=36.1> <EMI ID = 36.1> bée vers l'intérieur de la section, la largeur totale du profil étant maintenue égale pendant tout le laminage, de telle sorte que le centre de gravité des profils successifs soit déplacé vers les extrémités des ailes. open towards the inside of the section, the total width of the profile being kept equal throughout the rolling, so that the center of gravity of the successive profiles is shifted towards the ends of the wings.
BE367520D 1929-02-12 BE367520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE689058X 1929-02-12

Publications (1)

Publication Number Publication Date
BE367520A true BE367520A (en)

Family

ID=6598616

Family Applications (1)

Application Number Title Priority Date Filing Date
BE367520D BE367520A (en) 1929-02-12

Country Status (2)

Country Link
BE (1) BE367520A (en)
FR (1) FR689058A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU32785A1 (en) * 1953-04-02

Also Published As

Publication number Publication date
FR689058A (en) 1930-09-02

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