CN1029244C - Austenite stainless steel - Google Patents
Austenite stainless steel Download PDFInfo
- Publication number
- CN1029244C CN1029244C CN 93106802 CN93106802A CN1029244C CN 1029244 C CN1029244 C CN 1029244C CN 93106802 CN93106802 CN 93106802 CN 93106802 A CN93106802 A CN 93106802A CN 1029244 C CN1029244 C CN 1029244C
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- China
- Prior art keywords
- stainless steel
- austenite stainless
- replace
- processing performance
- austenite
- Prior art date
- Legal status (The legal status 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 status listed.)
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Abstract
The present invention relates to an austenite stainless steel of OCr12Mn12Ni3Cu2RE, which uses cheap manganese to replace noble metal nickel, and adds rare-earth elements. The productive cost is low. Compared with the austenitic stainless steel of 1Cr18Ni9 widely used at home and abroad, the austenite stainless steel has good processing performance, and the technologies including smelting, processing, heat treatment and the like are easy to control and realize. The austenite stainless steel can replace 18-8 type austenite stainless steel and be used for members, parts and the like having high requirements for corrosion resistance, processing performance and a certain strength, thereby obtaining good economic benefit and the effect of foreign exchange saving.
Description
The invention belongs to black alloy.
Austenitic stainless steel is still the main products of stainless material at present, the existing in the literature report of this technology.Stainless steel turnout maximum be 18-8 type austenitic stainless steel, representative materials is 1Cr18Ni9Ti, because nickel content is higher, the cost height, deep drawability can not meet the demands, and makes the extremely low (Japan's " special permission communique " of some finished product rates, 1992, N.32144).Abroad with manganese for nickel to reduce cost, but general chrome content is still about 18%, technico-economical comparison is relatively poor, mostly be the Cr-Mn-N steel, maximum problem is a poor in processability, can't satisfy processing conditionss such as thin plate deep-draw (Wang Xiaotian chief editor, " Metal Material Science ", China Machine Press 1987, P187).
The objective of the invention is to prepare novel austenitic stainless steel material, its plastic deformation ability is higher, easily machine-shaping, cost obviously generation in 18-8 type stainless steel, resistance to abrasion is suitable with 18-8 type austenitic stainless steel in weak corrosive medium such as atmosphere and seawater, to satisfy the heavy demand of civilian light industrial goods.
The chemical constitution of OCr12Mn12Ni3Cu2RE austenitic stainless steel of the present invention is (weight %):
C Cr Mn Ni
≤0.08 11.75-13.50 11-13 2.5-3.5
Si Cu RE Fe
≤ 1.0 1.5-2.5 0.05-0.1 all the other
Stainless steel prescription of the present invention mainly guarantees its superior corrosion resistance energy and machine-shaping property by carbon drop and adding trace rare-earth.Guarantee to obtain single austenite structure after the solution treatment by the rational Match of alloying element for Ni with Mn simultaneously, can induce an amount of martensite during cold deformation strengthening, utilize its rust to send out plasticity, improve the deep-draw processing forming of material.The adding of Mn can be effectively for Ni, and to reduce cost, the adding of Cu can improve solidity to corrosion.The technology of austenitic stainless steel of the present invention is: proportion ingredient → medium-frequency induction furnace melting → hammer cogging (initial forging temperature is 1050-1150 ℃, and final forging temperature is 850 ℃) → finishing (planing) → hot rolling (1100～850 ℃) according to chemical composition becomes slab → annealing (950 ℃ of 2h) → pickling → cold rolling becoming a useful person.Thermal treatment process is: recrystallization annealing process: 850-950 ℃, and 2h; Solid solution treatment process: 950 ± 10 ℃, 1-2h; The cold roller and deformed 60%-80% that can be controlled in.
OCr12Mn12Ni3Cu2RE austenitic stainless steel cost of the present invention is low, compare with 18-8 type stainless steel, cost of raw and processed materials per ton can be saved more than 2000 yuan, stainless steel work hardening rate of the present invention is low, be convenient to forming process, but simplified processing process, and deep drawability can be good, can significantly improve yield rate.
Embodiment:
Proportioning is:
C 0.06%，Cr 12%，Mn 12%，
Ni3%，Si1.0%，Cu2%，
The RE trace, all the other are Fe
By last proportion ingredient, with (initial forging temperature 1050-1150 ℃ of melting → hammer cogging in the material input medium-frequency induction furnace for preparing, 850 ℃ of final forging temperatures) → finishing (planing) → hot rolling (1100-850 ℃) become a useful person slab → annealing (950 ℃, 2h) → pickling → cold rolling becoming a useful person.Thermal treatment process is: recrystallization annealing process: 850-950 ℃, and 2h; Solid solution treatment process: 950 ± 10 ℃, 1-2h; Cold rolling reduction can be controlled in 60%-80%.The finger art index of this material be (through 80% cold rolling after): σ
b=1365MN/m
2; H
v=430; ψ 16%; Corrosion resistance nature is at atmosphere, and is suitable with 1Cr18Ni9Ti in the weak erosive media such as seawater.
Claims (1)
1, a kind of austenitic stainless steel material is made of elements such as chromium, manganese, nickel, and the chemical constitution (by weight percentage) that the invention is characterized in the OCr12Mn12Ni3Cu2RE austenitic stainless steel is that: C is≤0.08; Cr is 11.75-13.50; Mn is 11-13; Ni is 2.5-3.5; Si is≤1.0; Cu is 1.5-2.5; RE is 0.05-0.1; All the other are Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93106802 CN1029244C (en) | 1993-06-08 | 1993-06-08 | Austenite stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93106802 CN1029244C (en) | 1993-06-08 | 1993-06-08 | Austenite stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1080330A CN1080330A (en) | 1994-01-05 |
| CN1029244C true CN1029244C (en) | 1995-07-05 |
Family
ID=4986401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93106802 Expired - Fee Related CN1029244C (en) | 1993-06-08 | 1993-06-08 | Austenite stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1029244C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386464C (en) * | 2006-07-21 | 2008-05-07 | 内蒙古华业特钢股份有限公司 | Rare earth low-nickel CrMnN stainless steel |
| CN101435056B (en) * | 2008-11-27 | 2010-12-22 | 江苏利达不锈钢有限公司 | Novel low-cost free-cutting stainless steel 303C and manufacturing process thereof |
| CN101413091B (en) * | 2008-11-28 | 2010-11-17 | 江苏大学 | Novel easy-to-cut stainless steel 303B and manufacturing method thereof |
| CN111057944A (en) * | 2019-12-27 | 2020-04-24 | 连云港华乐不锈钢制品有限公司 | Nickel-saving austenitic stainless steel and method for producing nickel-saving austenitic stainless steel by using laterite nickel ore |
-
1993
- 1993-06-08 CN CN 93106802 patent/CN1029244C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1080330A (en) | 1994-01-05 |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |