CN102758139A - ZG10Cr1Mn1Si1A batten martensite wear-resistant low-alloy steel and manufacturing method thereof - Google Patents
ZG10Cr1Mn1Si1A batten martensite wear-resistant low-alloy steel and manufacturing method thereof Download PDFInfo
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- CN102758139A CN102758139A CN2011101105613A CN201110110561A CN102758139A CN 102758139 A CN102758139 A CN 102758139A CN 2011101105613 A CN2011101105613 A CN 2011101105613A CN 201110110561 A CN201110110561 A CN 201110110561A CN 102758139 A CN102758139 A CN 102758139A
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Abstract
The invention discloses ZG10Cr1Mn1Si1A batten martensite wear-resistant low-alloy steel and a manufacturing method thereof. The ZG10Cr1Mn1Si1A batten martensite wear-resistant low-alloy steel comprises the following chemical components: 0.08 to 0.15 percent of C, 1.0 to 1.5 percent of Mn, 0.7 to 1.5 percent of Si, 0.8 to 1.5 percent of Cr, 0.05 percent of P, 0.05 percent of S, 0.002 percent of RE and a small amount of rare earth. According to the invention, proportioning of low carbon and various elements with small amount is adopted; casting formation is performed; a proper amount of small elements are added; and the casting structure is pearlite and network ferrite.
Description
Technical field
The present invention relates to a kind of ZG10Cr1Si1A lath martensite wear-resistant low-alloy steel and method of manufacture thereof, belong to metallurgical industry field.
Technical background
China is placed on consequence with the research and development and the application of metal wear resistant material and wear-resistant technology all the time; Transforming on the basis that absorbs external advanced technologies technology, equipment; The high-abrasive material great variety of goods that research and development are produced, the mechanical property of various types of materials satisfy produces the needs that use, and has not only continued representative high-abrasive material production technology; Also develop a series of new products, like modified high manganese steel, austenite abrasion-proof steel, wear-resisting alloy steel.But; Multiple element must be added in this type of alloy steel capital could improve its wear-resisting and toughness, is example with high mangaenese steel, and the high mangaenese steel as-cast tough is poor; Must could improve its toughness through Water Quenching; In the large impact Working environment, could improve its surface hardness, finally obtain comparatively ideal result of use, otherwise effect be bad.The high mangaenese steel ys is low, and σ s is 350MPa only, for the big work of working load, has shortcomings such as yielding in the use, easy to wear, easy fracture.High mangaenese steel is work hardening very easily, thereby be difficult to processing, and the overwhelming majority is a foundry goods, and minute quantity is processed with forging method.The linear expansivity of high mangaenese steel is 1.5 times of pure iron, is 2 times of carbon steel, so volumetric shrinkage and linear shrinkage ratio are all bigger during casting, occurs stress and crackle easily.
Summary of the invention
The object of the present invention is to provide a kind of method of producing low mischmetal steel, produce the toughness height, the steel grade that wear resistance is high.So how to improve initialize hardness, work hardening capacity and the ys of steel alloy, overcome high-temp plastic wearing and tearing, low-temperature embrittleness and be the present invention the key job that will realize.
For realizing above-mentioned purpose, the present invention realizes that through following basic design of chemical composition and technical scheme this a kind of ZG10Cr1Si1A lath martensite wear-resistant low-alloy steel Chemical Composition and mass percent thereof that provides is: 0.08～0.15%C, 0.8～1.5%Mn; 0.7～1.5%Si; 0.8～1.5%Cr,＜0.1%P,＜0.1%S; 0.005～0.007%B, a small amount of rare earth of 0.02%RE.The present invention adopts low-carbon (LC), polynary a spot of proportioning, carry out casting, and it is an amount of to dose little element, and as-cast structure is perlite+ferrite network.
ZG10Cr1Si 1A lath martensite wear-resistant low-alloy steel provided by the present invention and method of manufacture thereof, its process is:
1, through the working method of casting, fusions such as required elemental chromium, manganese, silicon, carbon is alloyed metal.
2, through thermal treatment process alloy is heated to the austenitic area, Heating temperature is 930-1050 ℃.
3, cool off (water-cooled) fast, obtain the metallographic structure of lath martensite+residual austenite.
The lath martensite tissue has very high mechanical property; When receiving intense impact, pressure, produce work hardening; Thereby play anti abrasive effect, thereby be not prone to the security that brittle rupture has guaranteed use owing to have very high obdurability, definite foundation of chemical ingredients of the present invention is:
The Cr element interaction: improve hardening capacity, solidity to corrosion, and can form carbide reinforced metallographic,
Mn element interaction: enlarge the austenite phase region and improve hardening capacity reduction Ms point, enlarge martensite and form the zone.Intensity, plasticity are improved simultaneously,
Si element interaction: improve elastic limit, improve the resistance to deformation and the impact fatigue intensity of steel strongly, alleviate Low-Temperature Temper Brittleness.
The REE effect: have strong deoxidation, desulfidation, make grain refining, rare earth adds affiliation increases toughness.
B element interaction: improve hardening capacity strongly
Beneficial effect
Relatively have the following advantages with current material:
1, intensity is higher; 2, toughness is better; 3, reduce the consumption of precious metals such as chromium, molybdenum, tungsten, used units such as the rich manganese that produces of China, silicon usually to substitute precious metals such as molybdenum, nickel, tungsten; 4, cost is lower; 5, security is higher.6, this steel deformability by force, do not rupture, wear resistance is higher than high mangaenese steel, is suitable for replacing high manganese steel wear resistant part.7, weldability is good.
Each chemical ingredients and mechanical property
Table 1ZG10Cr1Si1A lath martensite wear-resistant low-alloy steel chemical ingredients
Mechanical property:
Hardness: 35-45HRC tensile strength＞1200Mpa impelling strength＞45J/cm
2
Description of drawings
Fig. 1 is the low body of lath horse for metallographic structure after the tempering
Claims (2)
1. ZG10Cr1Si1A lath martensite wear-resistant low-alloy steel Chemical Composition and mass percent thereof are: 0.08～0.15%C, 0.8～1.5%Mn, 0.7～1.5%Si; 0.8～1.5%Cr, P≤0.1%, S≤0.1%; 0.005～0.007%B, a small amount of rare earth of 0.02%RE.
2. method of making the described ZG10Cr1Si1A lath martensite of claim 1 wear-resistant low-alloy steel is characterized in that this method may further comprise the steps in regular turn:
A. carry out charge calculation according to Chemical Composition,
B. preface adds alloy raw material successively,
C. through thermal treatment process alloy is heated to the austenitic area, Heating temperature is 930-1050 ℃
D. cool off fast, obtain the metallographic structure of lath martensite+residual austenite.
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| CN2011101105613A CN102758139A (en) | 2011-04-29 | 2011-04-29 | ZG10Cr1Mn1Si1A batten martensite wear-resistant low-alloy steel and manufacturing method thereof |
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| CN2011101105613A CN102758139A (en) | 2011-04-29 | 2011-04-29 | ZG10Cr1Mn1Si1A batten martensite wear-resistant low-alloy steel and manufacturing method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1385549A (en) * | 2002-01-15 | 2002-12-18 | 江苏省机电研究所 | Intermediate carbon multielement low alloy wear-resistant casting steel |
| CN101880828A (en) * | 2010-07-09 | 2010-11-10 | 清华大学 | Preparation method of low-alloy manganese martensite wear resistant cast steel |
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- 2011-04-29 CN CN2011101105613A patent/CN102758139A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1385549A (en) * | 2002-01-15 | 2002-12-18 | 江苏省机电研究所 | Intermediate carbon multielement low alloy wear-resistant casting steel |
| CN101880828A (en) * | 2010-07-09 | 2010-11-10 | 清华大学 | Preparation method of low-alloy manganese martensite wear resistant cast steel |
Non-Patent Citations (1)
| Title |
|---|
| 谢敬佩等: "《耐磨铸钢及熔炼》", 31 July 2003 * |
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Application publication date: 20121031 |