SU512248A1 - The method of heat treatment of welded products from structural steels - Google Patents

The method of heat treatment of welded products from structural steels

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Publication number
SU512248A1
SU512248A1 SU2055458A SU2055458A SU512248A1 SU 512248 A1 SU512248 A1 SU 512248A1 SU 2055458 A SU2055458 A SU 2055458A SU 2055458 A SU2055458 A SU 2055458A SU 512248 A1 SU512248 A1 SU 512248A1
Authority
SU
USSR - Soviet Union
Prior art keywords
heat treatment
structural steels
welded products
heat
weld
Prior art date
Application number
SU2055458A
Other languages
Russian (ru)
Inventor
Александр Иванович Волконский
Нина Николаевна Веревкина
Захар Ильич Фридкис
Original Assignee
Производственное Объединение Уралмаш
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.)
Filing date
Publication date
Application filed by Производственное Объединение Уралмаш filed Critical Производственное Объединение Уралмаш
Priority to SU2055458A priority Critical patent/SU512248A1/en
Application granted granted Critical
Publication of SU512248A1 publication Critical patent/SU512248A1/en

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Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Description

1one

Изобретение относитс  к области местной термической обработки сварных изделий из конструкционных сталей.This invention relates to the field of local heat treatment of welded products from structural steels.

Известен способ термической обработки сварных изделий из конструкционных сталей, включающий нагрев сварного шва, зоны термического вли ни  и основного металла до температуры ниже температуры точки Ас и последующее двустороннее ускоренное охлаждение сварного шва, зоны термического вли ни  и основного металла.The known method of heat treatment of welded products from structural steels includes heating the weld, the heat-affected zone and the base metal to a temperature below the Ac point temperature and the subsequent bilateral accelerated cooling of the weld, the heat-affected zone and the base metal.

С целью снижени  остаточных напр жений на.гре-в издели  праизвод т на участке, ширина которого не менее, чем в 3 раза превышает ширину участка ускоренного охлаждени .In order to reduce the residual stresses, the product heat is produced in an area whose width is no less than 3 times the width of the accelerated cooling section.

Способ, применительно к обработке сварной плиты из стали 09Г2С размером 4400 X ХЗОЗОХ80 мм, включает односторонний нагрев сварного шва, зоны термического вли ни  и прилегающих участков основного металла секционными нагревател ми с шириной зоны нагрева (устанавливаемой с помощью ограничителей ) не менее 450 мм в течение 30 мин. При этом температура нагреваемой поверхности составл ет 420°С, а противоположной поверхности в различных точках зоны нагрева - 220-320°С. После выдержки в течение 3 мин плиту подвергают двустороннему (со стороны как нагреваемой, так и противоположной поверхности) спрейерному охлаждению со скоростью 0,27°С/сек до 80°С при ширине полосы охлаждени  150 мм. В результате обработки остаточные напр жени  в сварной плите снижаютс  в 2-4 раза. При повышении температуры нагрева шва в пределах 200-700°С эффективность сн ти  остаточных напр жений несколько снижаетс , однако существенно повышаетс  ударна  в зкость.The method, as applied to the processing of a welded plate of steel 09G2S with a size of 4400 X ХСОХ80 mm, includes one-sided heating of the weld, heat affected zones and adjacent areas of the base metal with sectional heaters with a width of the heating zone (set using limiters) not less than 450 mm for 30 min. In this case, the temperature of the heated surface is 420 ° C, and the opposite surface at various points in the heating zone is 220-320 ° C. After holding for 3 minutes, the plate is subjected to a two-sided (from both heated and opposite surface) sprayer cooling at a rate of 0.27 ° C / sec to 80 ° C with a cooling band width of 150 mm. As a result of processing, the residual stresses in the welded plate are reduced by 2-4 times. With an increase in the heating temperature of the weld in the range of 200-700 ° C, the effectiveness of removing the residual stresses decreases slightly, however, the impact strength significantly increases.

Благодар  снижению остаточных напр жений применение изобретени  позвол ет повысить размерную стабильность и эксплуатационную надежность сварных изделий из конструкционных сталей.By reducing the residual stresses, the application of the invention allows to increase the dimensional stability and operational reliability of welded products made of structural steels.

Claims (1)

Формула изобретени Invention Formula Способ термической обработки сварных изделий из конструкционных сталей, включающий нагрев сварного шва, зоны термического вли ни  и прилегающих участков основного металла до температуры ниже температуры точки Ас и ускоренное двустороннее охлаждение сварного шва и зоны термического вли ни , отличающийс  тем, что, с целью снижени  остаточных напр жений, нагрев издели  производ т на участке, ширина которого не менее, чем в 3 раза превышает ширину участка ускоренного охлаждени .The method of heat treatment of welded products from structural steels, including heating of the weld, heat-affected zone and adjacent base metal areas to a temperature below the Ac point temperature and accelerated two-sided cooling of the weld and heat-affected zone, characterized in that, in order to reduce the residual stresses, the product is heated in an area whose width is not less than 3 times the width of the accelerated cooling section.
SU2055458A 1974-08-26 1974-08-26 The method of heat treatment of welded products from structural steels SU512248A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU2055458A SU512248A1 (en) 1974-08-26 1974-08-26 The method of heat treatment of welded products from structural steels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU2055458A SU512248A1 (en) 1974-08-26 1974-08-26 The method of heat treatment of welded products from structural steels

Publications (1)

Publication Number Publication Date
SU512248A1 true SU512248A1 (en) 1976-04-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU2055458A SU512248A1 (en) 1974-08-26 1974-08-26 The method of heat treatment of welded products from structural steels

Country Status (1)

Country Link
SU (1) SU512248A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5259545A (en) * 1991-12-20 1993-11-09 Vlsi Technology, Inc. Apparatus for bonding a semiconductor die to a package using a gold/silicon preform and cooling the die and package through a monotonically decreasing temperature sequence

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5259545A (en) * 1991-12-20 1993-11-09 Vlsi Technology, Inc. Apparatus for bonding a semiconductor die to a package using a gold/silicon preform and cooling the die and package through a monotonically decreasing temperature sequence

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