CN1016518B - Air quenching medium carbon manganese steel alloy - Google Patents
Air quenching medium carbon manganese steel alloyInfo
- Publication number
- CN1016518B CN1016518B CN 89107299 CN89107299A CN1016518B CN 1016518 B CN1016518 B CN 1016518B CN 89107299 CN89107299 CN 89107299 CN 89107299 A CN89107299 A CN 89107299A CN 1016518 B CN1016518 B CN 1016518B
- Authority
- CN
- China
- Prior art keywords
- steel
- manganese
- air quenching
- medium carbon
- steel alloy
- 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.)
- Expired
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- Heat Treatment Of Steel (AREA)
Abstract
The invention provides a kind of air quenching medium carbon manganese steel alloy, utilize manganese to significantly improve the hardening capacity principle of steel, manganese content with 4%, designed carbon wear-resisting alloy steel in the high-hardenability that air quenching strengthens, it is characterized in that containing 3.5～5.5%Mn, 0.9～1.1%Cr, 1.00～1.50%Si, 0.35～0.55%C, ≤ 0.035%P ,≤0.035%S is as E Shi crusher jaw and ball grinding machine lining board, has excellent comprehensive performances, δ b＞1700N/mm
2, HRc45～55, ak＞50J/cm
2, the life-span is enhanced about more than once than high mangaenese steel.
Description
The present invention relates to a kind of medium carbon manganese steel alloy, be used as the jaw and the ball grinding machine lining board of E Shi crusher, double than high mangaenese steel work-ing life.
Cast austenitic steel-high mangaenese steel (Mn13) of high-carbon Gao Meng is the wear-resisting steel grade of rock failure of domestic main application.High mangaenese steel has very high impelling strength and significant surface deformation strengthening ability, is applicable to that surface energy produces strong compression set and forms the working conditions of surface strengthen layer.But the surface deformation hardened layer of high mangaenese steel only has 0.5mm thick, and surperficial 0.1mm place hardness is Rc52(HB507), surperficial 0.5mm place hardness is Rc39(HB380), the hardness of heart portion only has (HB179-230) about Rc20.Therefore under strong abrasive wear situation, the wear resisting property of high mangaenese steel is on duty mutually.China's mine industry reaches more than millions of tons with the annual consume of building materials industry (cement, glass, refractory materials etc.) high mangaenese steel.1985, China Cement industry consumed 290,000 tons of high-abrasive materials, was 500,000,000 yuans by at that time calculation of price.China's Cement industry equipment attrition accounts for total down-time 50～55% stop time, and equipment attrition is shut down 1,400,000 tons of year minimizing cement, and the output value reaches 1.1 hundred million yuans.If the life-span of high-abrasive material can be improved 1 times, increase by 300,000,000 5 thousand ten thousand yuan of the output values (by calculation of price in 1985) China's Cement industry year.Therefore, development and the new and effective high-abrasive material of popularization have enormous function for national economy.
The research of abrasion resistance material is the research topic that domestic and international material supply section educational circles widely payes attention to.Replace the abrasion resistance material of high mangaenese steel, mainly contain three types.First type is the high manganese steel alloy that adds chromium (Cr) molybdenum (Mo), vanadium (V), tungsten (W) or titanium alloying elements such as (Ti), and the wear resistance of this material improves than high mangaenese steel.Second type cast steel with high chromium or rich chromium cast iron, its carbon content is up to 1-5.5%, and chrome content reaches 13-35%, and the wear resistance of this material is very high, but impelling strength is very low, and production cost is also than higher.The third type is a low alloy steel series, is main alloy element with chromium, molybdenum.This class material has good wear resistance and impelling strength preferably.
Analysis-by-synthesis of the present invention external all kinds of abrasion resistance materials, having developed with the most cheap alloying element manganese (2-4%Mn) is the wear-resisting steel grade of carbon series low alloy steel in main alloy element low.Manganese is the alloying element that significantly improves steel hardenability, but material supply section educational circles tradition thinks that the content of manganese should not surpass 2.0% in the structure iron.Tradition thinks that manganese increases temper brittleness, cold shortness and the superheated susceptivity of steel and reduces impelling strength.Next residual austenite of thinking that manganese increases in the quenching structure descends the wear resistance of steel, and these are not have manganese content to be higher than 2% major reason of carrying out the structure iron or the wear resisting steel of quench treatment in the grade of steel handbook of countries in the world.Studies show that under the simultaneous situation of several alloying elements, the structure iron of higher manganese content has very high hardening capacity and good comprehensive mechanical performance, the quenching low-temperaturetempering is handled and is not demonstrated temper brittleness, does not also have superheated susceptivity and cold shortness.Residual austenite in the middle low carbon manganese steel mainly is present between the martensite with film like, and this form residual austenite increases impelling strength, fracture toughness property and fatigue resistance.
External air quenching steel grade have Japan, West Germany etc., its hardening capacity is very low, and intensity, hardness and impelling strength are all not ideal enough, chromium, molybdenum content are higher simultaneously, also contain minor amount of nickel.
The object of the present invention is to provide a kind of very cheap high-abrasive material of high-hardenability and excellent comprehensive performance that has.
Formation of the present invention is to contain 3.5～5.5%Mn, 0.9～1.1%Cr, and 1.00～1.5%Si, 0.35～0.55%C ,≤0.035%P ,≤0.035%S is characterized in that preferentially selecting 4.0～4.5%Mn content.Thermal treatment process is 860～880 ℃ of annealing, 860～900 ℃ of dry quenchings, and 200 ℃ of tempering.
The invention has the advantages that hardening capacity is very high, good combination property, cheap, long service life is enhanced about more than once than high mangaenese steel.
Claims (2)
1, a kind of air quenching medium carbon manganese steel alloy is characterized in that containing 3.5%～5.5%Mn, 0.9～1.1%Cr, 1.00～1.50%Si, 0.35～0.55%C ,≤0.035%P ,≤0.035%S.
2,, it is characterized in that preferentially selecting 4.0～4.5%Mn according to the described medium carbon manganese steel alloy of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89107299 CN1016518B (en) | 1989-09-28 | 1989-09-28 | Air quenching medium carbon manganese steel alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89107299 CN1016518B (en) | 1989-09-28 | 1989-09-28 | Air quenching medium carbon manganese steel alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1050570A CN1050570A (en) | 1991-04-10 |
| CN1016518B true CN1016518B (en) | 1992-05-06 |
Family
ID=4857153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89107299 Expired CN1016518B (en) | 1989-09-28 | 1989-09-28 | Air quenching medium carbon manganese steel alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016518B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107974630A (en) * | 2017-11-22 | 2018-05-01 | 河南科技大学 | A kind of ball mill medium managese steel lining material and preparation method thereof |
-
1989
- 1989-09-28 CN CN 89107299 patent/CN1016518B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1050570A (en) | 1991-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| 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 |