SU378429A1 - Method of diffusion annealing of steel - Google Patents
Method of diffusion annealing of steelInfo
- Publication number
- SU378429A1 SU378429A1 SU1623358A SU1623358A SU378429A1 SU 378429 A1 SU378429 A1 SU 378429A1 SU 1623358 A SU1623358 A SU 1623358A SU 1623358 A SU1623358 A SU 1623358A SU 378429 A1 SU378429 A1 SU 378429A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- steel
- diffusion annealing
- ferrite
- hours
- amount
- Prior art date
Links
Description
Изобретение относитс к термической обработке слитков и проката из стали ЭП-56.The invention relates to heat treatment of ingots and rolled products from EP-56 steel.
Известен способ диффузионнаго отжига стали ЭП-56 пр,и 1150° С в течение 5,5 час. Он не обес1пачи1вает павышеви техиологичеокой пластичности стали за счет уменьшени количества 4-феррита.The known method of diffusion annealing of steel EP-56, etc., and 1150 ° C for 5.5 hours. It does not ensure that the pavyshevi and the technological plasticity of steel by reducing the amount of 4-ferrite.
Цель изобретени - повышение технологической .пластичности.The purpose of the invention is to increase the technological plasticity.
Предлагаемый способ отличаетс тем, что сталь нагревают до 1230° С, выдерживают в тече1ние 3 час, снижают до 1200° С, выдерживают в течение 5 час, снижают до 1150° С, выдерживают iB течение 7 час и охлаждают на воздухе.The proposed method is characterized in that the steel is heated to 1230 ° C, kept for 3 hours, reduced to 1200 ° C, kept for 5 hours, reduced to 1150 ° C, maintained iB for 7 hours and cooled in air.
Дан.ный способ был олробаван на темплетах из прОМышленных слитков и прутков 0150 мм различных способов вьтлавки.This method was used on the templates of industrial ingots and bars of 0150 mm in various ways of curing.
После отжи,га по описываемому режиму, независи.мо от способа выплавки стали, значительно уменьшаетс дендритна ли-кваци и количество -феррита. Например, количество -феррита в слитках стали, % выплавленной различными опособами показано в таблице 1.30 After being wrung out, according to the described mode, regardless of the method of steel smelting, the dendritic quat and the amount of α-ferrite are significantly reduced. For example, the amount of α-ferrite in steel ingots,% smelted by various means is shown in table 1.30
Таблица 1Table 1
.Q Количество феррита в прутке 0 150 мм из той же стали показано в таблице 2..Q The amount of ferrite in a bar 0 150 mm from the same steel is shown in table 2.
Таблица 2table 2
Кро.ме того, после отжига по указанному режиму форма включений 4-феррита мен етс из угловой на округлую. За счет уменьшени количества 4-феррита после отжита повышаетс гор ча пластичность стали. Предлагаемый режим может быть совмеш ,ен с паг.равол под гор чую деформацию иди осуществл етс самосто тельно. 3 Г1(реД|Мет .изобретени Способ диффузионното отжига стали, нап .ример ЭП-56, включающий нагрев и охлаждение , отличающийс тем, что, с целью по- 5 вышени теХНОлогичеокой пластичности за 4 счет снижени количества 4-феррита, сталь нагревают до 1230° С, выдерживают в течение 3 час, снижают температуру до 1200° С, выдерживают в течение 5 час, затем снижают ее до 1150° С, выдерживают в течение 7 час и охлаждают на воздухе.In addition, after annealing in this mode, the shape of the 4-ferrite inclusions changes from angular to rounded. By reducing the amount of 4-ferrite after the spin-off, the hot ductility of the steel increases. The proposed mode can be combined with the pag. Solution under hot deformation or is carried out independently. 3 G1 (reD | Met. Of the invention. Method of diffusion annealing of steel, n. EP-56 example, including heating and cooling, characterized in that in order to increase the technological plasticity by 4 by reducing the amount of 4-ferrite, the steel is heated to 1230 ° C, incubated for 3 hours, reduce the temperature to 1200 ° C, incubated for 5 hours, then reduce it to 1150 ° C, incubated for 7 hours and cooled in air.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1623358A SU378429A1 (en) | 1971-02-15 | 1971-02-15 | Method of diffusion annealing of steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1623358A SU378429A1 (en) | 1971-02-15 | 1971-02-15 | Method of diffusion annealing of steel |
Publications (1)
Publication Number | Publication Date |
---|---|
SU378429A1 true SU378429A1 (en) | 1973-04-18 |
Family
ID=20466331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1623358A SU378429A1 (en) | 1971-02-15 | 1971-02-15 | Method of diffusion annealing of steel |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU378429A1 (en) |
-
1971
- 1971-02-15 SU SU1623358A patent/SU378429A1/en active
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