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RU1431158C - Method of making bent sections - Google Patents

Method of making bent sections Download PDF

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Publication number
RU1431158C
RU1431158C SU4128189A RU1431158C RU 1431158 C RU1431158 C RU 1431158C SU 4128189 A SU4128189 A SU 4128189A RU 1431158 C RU1431158 C RU 1431158C
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RU
Russia
Prior art keywords
corrugations
corrugation
channel
finishing
radius
Prior art date
Application number
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Russian (ru)
Inventor
В.Г. Антипанов
В.И. Гридневский
В.Н. Кочубеев
А.С. Кириллов
Н.К. Поздняков
Original Assignee
АООТ "Магнитогорский металлургический комбинат"
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.)
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Application filed by АООТ "Магнитогорский металлургический комбинат" filed Critical АООТ "Магнитогорский металлургический комбинат"
Priority to SU4128189 priority Critical patent/RU1431158C/en
Application granted granted Critical
Publication of RU1431158C publication Critical patent/RU1431158C/en

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Abstract

FIELD: plastic metal working. SUBSTANCE: channel is shaped by bending shelves at the first steps. Spherical corrugations, top of which point inward the channel, are formed on horizontal wall of the channel at pre-finishing and finishing steps. Bent shelves are loosened from rollers when corrugations are formed at pre-finishing step. The corrugations are loosened at finishing step. At pre-finishing step radius at the base of corrugation is less by 20-30% than final radius of channel bent. EFFECT: excluded cracking at corrugation base. 2 dwg

Description

Изобретение относится к обработке металлов давлением и может быть использовано при производстве холодно-гнутых профилей проката типа швеллерров и с гофрами преимущественно сферической формы на его горизонтальной стенке. The invention relates to the processing of metals by pressure and can be used in the production of cold-formed sections of rolled steel type of channels and with corrugations mainly spherical in shape on its horizontal wall.

Цель изобретения - повышение качества профилей швеллерного типа проката с гофрами на его горизонтальной стенке за счет исключения трещинообразования у основания гофров и предупреждения волнистости подгибаемых полок. The purpose of the invention is to improve the quality of the profiles of the channel type of rolled products with corrugations on its horizontal wall by eliminating cracking at the base of the corrugations and preventing the waviness of the foldable shelves.

На фиг.1 показана схема формовки швеллера с гофрами жесткости на стенке (три последних перехода); на фиг.2 - швеллер с гофрами жесткости на стенке. Figure 1 shows a diagram of the molding of a channel with stiffeners on the wall (the last three transitions); figure 2 - channel with corrugation stiffness on the wall.

На первых переходах осуществляют подгибку полок 1 швеллера. В предчистовом переходе на горизонтальной стенке 2 швеллера формуют гофры 3 при освобождении полок 1 от зажатия валками. At the first transitions, the shelves 1 of the channel are bent. In the pre-transition on the horizontal wall 2 of the channel, corrugations 3 are formed when the shelves 1 are released from being clamped by rolls.

Величина радиуса r при основании гофра 3 на 20-30% меньше конечного радиуса R места изгиба 4 швеллера. The value of the radius r at the base of the corrugation 3 is 20-30% less than the final radius R of the bending point 4 of the channel.

В чистовом переходе освобождают гофры 3 от зажатия валками. Выбор оптимальной величины радиуса изгиба у оснований гофров позволяет исключить трещинообразование у оснований гофров, а выбор оптимального перехода, в котором можно формовать гофры без зажатия валками подгибаемых элементов, позволяет исключить волнистость подгибаемых полок профиля. In the finishing transition, the corrugations 3 are freed from being clamped by rolls. The choice of the optimal value of the bending radius at the base of the corrugations eliminates crack formation at the bases of the corrugations, and the choice of the optimal transition in which it is possible to form corrugations without being clamped by the rolls of the flexible elements allows to exclude the waviness of the flexible shelves of the profile.

Claims (1)

СПОСОБ ПРОИЗВОДСТВА ГНУТЫХ ПРОФИЛЕЙ ПРОКАТА ТИПА ШВЕЛЛЕРОВ С ГОФРАМИ ЖЕСТКОСТИ, преимущественно сферической формы на его горизонтальной стенке, заключающийся в подгибке плоских элементов профилей по проходам и формовке гофр на горизонтальной стенке профиля, отличающийся тем, что, с целью повышения качества профилей за счет исключения трещинообразования у оснований гофр и предупреждения волнистости подгибаемых полок, формование гофров осуществляют в предчистовом проходе радиусом у основания гофра на 20 - 30%, меньшим конечного радиуса мест изгиба профиля при освобождении подогнутых элементов от зажатия валками, в чистовом проходе освобождают от зажатия гофры. METHOD FOR MANUFACTURING BOUNDED PROFILES FOR RENTAL OF CHAINS WITH RIGID WIFE, mainly spherical in shape on its horizontal wall, which consists in folding flat profile elements along the aisles and forming corrugations on the horizontal profile wall, characterized in that, in order to improve the quality of formation due to the exception corrugation bases and prevention of the undulation of foldable shelves, corrugation is carried out in the pre-passage with a radius at the base of the corrugation by 20 - 30%, smaller than the final radius m eats a bending profile when releasing the bent elements from being clamped by the rolls; in the finishing passage, the corrugations are released from being clamped.
SU4128189 1986-07-24 1986-07-24 Method of making bent sections RU1431158C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU4128189 RU1431158C (en) 1986-07-24 1986-07-24 Method of making bent sections

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU4128189 RU1431158C (en) 1986-07-24 1986-07-24 Method of making bent sections

Publications (1)

Publication Number Publication Date
RU1431158C true RU1431158C (en) 1994-12-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU4128189 RU1431158C (en) 1986-07-24 1986-07-24 Method of making bent sections

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RU (1) RU1431158C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2220802C2 (en) * 2001-06-18 2004-01-10 ФГУП "Ульяновский НИАТ" Method for making bent shapes having rigidity ribs in bottom part

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Авторское свидетельство СССР N 221638, кл. B 21D 13/10, 1967. *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2220802C2 (en) * 2001-06-18 2004-01-10 ФГУП "Ульяновский НИАТ" Method for making bent shapes having rigidity ribs in bottom part

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