JPS57200517A - Preparation of structural steel for forging machine having middle and fine grain structure in high temp. short time heating - Google Patents
Preparation of structural steel for forging machine having middle and fine grain structure in high temp. short time heatingInfo
- Publication number
- JPS57200517A JPS57200517A JP8501981A JP8501981A JPS57200517A JP S57200517 A JPS57200517 A JP S57200517A JP 8501981 A JP8501981 A JP 8501981A JP 8501981 A JP8501981 A JP 8501981A JP S57200517 A JPS57200517 A JP S57200517A
- Authority
- JP
- Japan
- Prior art keywords
- fine grain
- forging machine
- structural steel
- steel
- grain structure
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE:To form the steel structure into a middle and fine grain structure having excellent characteristics in low heat energy consumption, in preparing structural steel of a forging machine, by utilizing coarse crystal grain growth inhibiting effect due to nitride of Ti, Zr and Hf to reduce a number of heat treating processes. CONSTITUTION:In preparing structural steel of a forging machine, a continuous cast steel segment is prepared from steel having a composition containing 0.12- 0.8% C, 0.1-1.0% Si, 0.3-2.5% Mn, 0.01-0.05% Al, one or more of Ti, Zr, Hf in an amount of 0.0075-0.035% calculated from formula Ti%+0.53XZr%+ 0.27X Hf%, (0.29XTi%+0.15XZr%+0.08XHf%)-0.015% N or one or more of 2% or less Cr, 3% or less Ni, 0.5% or less Mo and heated to 1,120-1,300 deg.C to be rolled and forged. Without necessitating heat treatment such as tempering, annealing or the like, the structure thereof can be formed into a middle and fine grain structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8501981A JPS57200517A (en) | 1981-06-04 | 1981-06-04 | Preparation of structural steel for forging machine having middle and fine grain structure in high temp. short time heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8501981A JPS57200517A (en) | 1981-06-04 | 1981-06-04 | Preparation of structural steel for forging machine having middle and fine grain structure in high temp. short time heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57200517A true JPS57200517A (en) | 1982-12-08 |
Family
ID=13847016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8501981A Pending JPS57200517A (en) | 1981-06-04 | 1981-06-04 | Preparation of structural steel for forging machine having middle and fine grain structure in high temp. short time heating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57200517A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020056056A (en) * | 2000-12-29 | 2002-07-10 | 이계안 | Direct quenched steel for connecting rod |
| CN109706296A (en) * | 2019-03-05 | 2019-05-03 | 中国第二重型机械集团德阳万航模锻有限责任公司 | The method for eliminating AF1410 steel forgings tissue mixed crystal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50130624A (en) * | 1974-04-01 | 1975-10-16 | ||
| JPS5130526A (en) * | 1974-09-07 | 1976-03-15 | Nippon Steel Corp | ATSUENMAMAKOJINSEIKOZAINOSEIZOHO |
| JPS51117118A (en) * | 1975-04-09 | 1976-10-15 | Nippon Steel Corp | Manufacture of stul of high tenacity as rolled |
| JPS5291724A (en) * | 1976-01-30 | 1977-08-02 | Nippon Steel Corp | Strengthning of low alloy and low carbon steel containing t1 v |
-
1981
- 1981-06-04 JP JP8501981A patent/JPS57200517A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50130624A (en) * | 1974-04-01 | 1975-10-16 | ||
| JPS5130526A (en) * | 1974-09-07 | 1976-03-15 | Nippon Steel Corp | ATSUENMAMAKOJINSEIKOZAINOSEIZOHO |
| JPS51117118A (en) * | 1975-04-09 | 1976-10-15 | Nippon Steel Corp | Manufacture of stul of high tenacity as rolled |
| JPS5291724A (en) * | 1976-01-30 | 1977-08-02 | Nippon Steel Corp | Strengthning of low alloy and low carbon steel containing t1 v |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020056056A (en) * | 2000-12-29 | 2002-07-10 | 이계안 | Direct quenched steel for connecting rod |
| CN109706296A (en) * | 2019-03-05 | 2019-05-03 | 中国第二重型机械集团德阳万航模锻有限责任公司 | The method for eliminating AF1410 steel forgings tissue mixed crystal |
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