SU594191A1 - Method of treating welded joints made from precipitation-hardening steels of martensitic class - Google Patents
Method of treating welded joints made from precipitation-hardening steels of martensitic classInfo
- Publication number
- SU594191A1 SU594191A1 SU762417484A SU2417484A SU594191A1 SU 594191 A1 SU594191 A1 SU 594191A1 SU 762417484 A SU762417484 A SU 762417484A SU 2417484 A SU2417484 A SU 2417484A SU 594191 A1 SU594191 A1 SU 594191A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- aging
- hardening
- hours
- quenching
- heating
- Prior art date
Links
Landscapes
- Heat Treatment Of Articles (AREA)
Description
Изобретемте относитс к -металпургни ,Inventor refers to Metals,
Известно проведение сварки дисперсионно- твердеющих мартенситнык сталей в закаленно1л состо нии il ,It is known to carry out welding of dispersion-hardening martensitic steels in the quenched1 state il,
Известен также способ обработки сварных соединений кз этих сталей,закл1очаюй1ийс в закалке заготовок, сварке и старении при There is also known a method of treating welded joints of these steels, enclosed in hardening of billets, welding and aging during
Закалку заготовки по известног.у способу провод т с TeNfflepaTypoft 820950°С , т.е. с температурой, превышающей температуру конца обратного мартенситного превращени (А) более чем н« 50С.Hardening of the workpiece according to the method of lime is carried out with TeNfflepaTypoft 820950 ° C, i.e. with a temperature higher than the temperature of the end of the reverse martensitic transformation (A) is more than n ~ 50 ° C.
Недостатком известного способа вл етс то, что в зоне термического вли ни сварного соединени развиваютс внутренние напр жени , вызванные интенсивньм протеканием старени в локальных объеьлах. Наличие керавнопрочных объемов может приводить к образованию мнкротрещин. Старение, проводимое после сварки, полностью не снимае напр жени в зоне термического вли ни В св зи с этим снижаетс Нс1дежность и долговечность сварных соед нений работающих при диназлическом и дик1Ш ййском нагружении.A disadvantage of the known method is that internal stresses develop in the heat-affected zone of the welded joint, caused by intensive aging in local areas. The presence of keravnoprochnyh volumes can lead to the formation of microcracks. Aging carried out after welding does not completely relieve the stresses in the heat-affected zone. In this connection, the Hc1 reliability and durability of the welded connections operating under the dynasic and cyclic loading are reduced.
Целью изобретени вл етс повьаиение надежности и долговечности сварных соединений из дисперсионно-твердек дих сталей мартенситного класса.The aim of the invention is to improve the reliability and durability of welded joints from dispersion-hard hard martensitic steels.
Это достигаетс тем, что перед сваркой провод т нагрев до температуры Л ,выдержку и охлаждение, а после старени осуществл ют Еополнительное старение.This is achieved by heating to temperature L before welding, holding and cooling, and after aging additional aging is carried out.
При использовании стали Х11Н9М2Д2ПГ (ЭП832) дл изготовлени свариваемых деталей перед сваркой провод т нагрев до температуры 700-750С, выдержку 0,15-5 ч , охлаждение на воздухе, а старение провод т сначала при 400-i 450°С в течение 1-5 ч , затем - при 520-570®С в течение 0,5-5 ч,When using steel X11H9M2D2PG (EP832) for the manufacture of welded parts, prior to welding, heating is carried out to a temperature of 700-750C, exposure is 0.15-5 hours, cooled in air, and aging is carried out first at 400 i 450 ° C for 1- 5 hours, then at 520-570 ° C for 0.5-5 hours,
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762417484A SU594191A1 (en) | 1976-11-01 | 1976-11-01 | Method of treating welded joints made from precipitation-hardening steels of martensitic class |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762417484A SU594191A1 (en) | 1976-11-01 | 1976-11-01 | Method of treating welded joints made from precipitation-hardening steels of martensitic class |
Publications (1)
Publication Number | Publication Date |
---|---|
SU594191A1 true SU594191A1 (en) | 1978-02-25 |
Family
ID=20681831
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU762417484A SU594191A1 (en) | 1976-11-01 | 1976-11-01 | Method of treating welded joints made from precipitation-hardening steels of martensitic class |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU594191A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2556897C1 (en) * | 2014-01-21 | 2015-07-20 | Николай Николаевич Зубков | Surface hardening by cutting-forming tool |
-
1976
- 1976-11-01 SU SU762417484A patent/SU594191A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2556897C1 (en) * | 2014-01-21 | 2015-07-20 | Николай Николаевич Зубков | Surface hardening by cutting-forming tool |
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