CN102534428A - New high-strength heat-resistance steel material - Google Patents
New high-strength heat-resistance steel material Download PDFInfo
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- CN102534428A CN102534428A CN2012100369962A CN201210036996A CN102534428A CN 102534428 A CN102534428 A CN 102534428A CN 2012100369962 A CN2012100369962 A CN 2012100369962A CN 201210036996 A CN201210036996 A CN 201210036996A CN 102534428 A CN102534428 A CN 102534428A
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Abstract
The invention provides a new high-strength heat-resistance steel material, which comprises the following components in percentage by weight: 27.0 to 28.0 percent of Cr, 1.50 to 2.50 percent of Mn, 0.20 to 0.35 percent of N, 0.30 to 0.40 percent of C, 8.00 to 9.00 percent of Ni, 1.30 to 1.70 percent of Si, less than or equal to 0.030 percent of S, less than or equal to 0.040 percent of P and the balance of Fe. The new high-strength heat-resistance steel material provided by the invention can be widely used in large cement dry-process production lines, has high corrosion resistance and tensile strength, increases the operation period of the production equipment, reduces production cost and increases economic benefit.
Description
Technical field
The present invention relates to a kind of heat-resisting steel material, relate in particular to the high strength heat resistant steel novel material of widely applying in a kind of building material industry.
Background technology
Along with whole world industry is fast-developing; Resource problem is seriously put in face of us; Therefore energy-saving and cost-reducing is the general orientation of China's industrial development, and profit maximization is the main direction that enterprise is pursued, and it is the social responsibility that enterprise should take on that production process reduces environmental pollution.Along with developing rapidly of China's building material industry and cement industry; And the accessory of production process is changed; The market demand of high strength heat resistant product made from steel also heightens thereupon; Like suspended preheater inner core lacing film, rotary kiln end kiln quarter badge and cooling machine grate plate etc., these foundry goods long-term with high-temperature gas with corrode material and contact, even receive 1200 ℃ of high ambient temperature oxidation corrosiones, receive the erosive wear of high-temperature material again; The working conditions very severe, so the steel product performance is directly determining the stability of equipment operations such as cement thermal technology.
At present, the high chromium nickel heat-resisting steel of the general employing of major equipment preheater inner barrel in the domestic cement producing line is as showing material (ZG40Cr25Ni20) etc.Because above-mentioned high temperature steel product also adopts a large amount of subsidiary material when mostly adopting precious metal such as nickelic, chromium as main raw material(s); Therefore exist the price of steel product cost higher; The heat-resistant antifriction poor-performing makes equipment unit short, poor stability in work-ing life; Complicated subsidiary material utilization being prone to cause environmental pollution; Finally further increased shortcomings such as production cost, therefore the suitable cement thermal technology of exploitation waits the high strength heat resistant steel novel material of the wear-resistant heat-resisting working condition of equipment just to seem very urgent and important.
Summary of the invention
The purpose of this invention is to provide a kind of high strength heat resistant steel novel material, solve that steel are long in hot environment following work-ing life, antioxidant property and the bad problem of abrasion resistance, and use subsidiary material to be prone to cause environmental pollution problems in the foundry goods process more.
To achieve these goals; The present invention provides a kind of high strength heat resistant steel novel material, and said high strength heat resistant steel novel material is made up of following component in percentage by weight: 27.0～28.0%Cr, 1.50～2.50%Mn, 0.20～0.35%N, 0.30～0.40%C, 8.00～9.00% Ni, 1.30～1.70%Si ,≤0.030%S ,≤0.040%P, surplus are Fe.
By following component in percentage by weight form 27.3～27.6%Cr, 1.6～2.00%Mn, 0.25～0.30%N, 0.33～0.36%C, 8.10～8.60% Ni, 1.40～1.60%Si ,≤0.030%S ,≤0.040%P, surplus are Fe.
An amount of effect of amplifying the Mn constituent content:, and at high temperature strengthen corrosion resistance nature with the raising heat resistance.Amplify the effect of Cr constituent content: to improve resistance to elevated temperatures, enduring quality and corrosion resistance nature.The effect of an amount of N of amplification constituent content is: to improve enduring quality, high temperature resistance, corrosion resistance nature.Adjustment through above-mentioned constituent content; A, show: at 600 ℃ of high temperature in high temperature friction and wear contrast test result; 3.3N or under the condition of 5.3N, frictional coefficient of the present invention and specific wear rate be all less than frictional coefficient and the specific wear rate of existing material ZG40Cr25Ni20, and under the condition of load 5.3N; Specific wear rate of the present invention is more obvious less than the specific wear rate of existing material ZG40Cr25Ni20, and the present invention is respectively 0.00015mm with the specific wear rate of existing material
3N
1m
1With 0.0002 mm
3N
1m
1B, show in ambient temperature mechanical properties and metallographic structure paired observation: room-temperature mechanical property tensile strength, ys and the unit elongation of existing material ZG40Cr25Ni20 are respectively 421.7Mp, 273.8Mp, 8.3% a little less than GB GB8492-87; And index of the present invention is respectively the standard value that 564.8Mp, 360.5Mp, 16.2% reach GB GB8492-87 fully; The content that can find out eutectic carbon cpd in the material structure of the present invention through light microscopic and stereoscan photograph is apparently higher than the content that shows eutectic carbon cpd in the material structure; Therefore; Microhardness of the present invention is higher than the microhardness of existing material, and microshrinkage quantity of the present invention is obviously more than the microshrinkage that is distributed in the existing material.C, show at high temperature oxidation and high temperature corrosion contrast test result: through 1000 ℃, behind the high temperature oxidation of 100h, high temperature oxidation resistance contrast the present invention all follows the oxidation kinetics parabola rule with existing material, and its parabolic velocity constant is respectively kp of the present invention
1=8.04*10
-3Mg
2/ cm
4* h (0-50h), kp
2=3.99*10
-3Mg
2/ cm
4* h (50-100h); Existing material kp
1=9.88*10
-3Mg
2/ cm
4* h (0-50h), kp
2=4.78*10
-3Mg
2/ cm
4* h (50-100h) can find out that oxygen resistance of oxidation of the present invention is better than existing material, shows high-temperature oxidation resistance preferably; High temp. salt corrosive nature contrast 100h, 1000 ℃ when corrosion finishes with NaCl existing material be corroded into the thin slice of about 1mm, sample thickness of the present invention but obviously is thicker than existing material, shows that the high temperature resistance brine corrosion ability of heat-resisting novel material obviously is better than existing material; Persistence contrast is under the condition of 900 ℃, stress 80Mp or 100Mp under the high temperature, and existing material was respectively 17 minutes, 5 minutes creep rupture life, and the present invention was respectively 5 hours, 2 hours.
The invention has the beneficial effects as follows:
(1) high strength heat resistant steel novel material of the present invention can be widely used on the large-scale cement dry process production line; Corrosion resistance is superior to the corrosion resistance nature of existing material ZG40Cr25Ni20 material; Increased the cycle of operation of production line; Reduce the production cost of knowing clearly, the cost of heat resistance steel only accounts for 53.87% of existing material ZG40Cr25Ni20 cost, has improved economic benefit.
(2) greatly practiced thrift resource, the nickel resources of China is deficient, and the market requirement and domestic breach are bigger, most of dependence on import, and the nickel content of heat resistance steel is less, has opened and has saved energy and reduce the cost, the effect of the limited resources of preserving our planet.
(3) effect of economic benefit and social benefit doulbe-sides' victory has been played in useful environmental protection in the casting process process of material of the present invention.
Embodiment
In order to deepen to understanding of the present invention, will combine embodiment that the present invention is made further detailed description below, following examples only are used to explain the present invention, do not constitute the qualification to protection domain of the present invention.
Embodiment 1
High strength heat resistant steel novel material is made up of following component in percentage by weight: 27.3%Cr, 1.53%Mn, 0.25%N, 0.31%C, 8.10% Ni, 1.40%Si, 0.010%S, 0.015%P, surplus are Fe.
Mechanical property after the modifier treatment: tensile strength (Mpa): 560.8; Surrender degree (Mpa): 332.4; Elongation after fracture (%): 12.6.
Embodiment 2
High strength heat resistant steel novel material is made up of following component in percentage by weight: 27.6%Cr, 1.90%Mn, 0.27%N, 0.34%C, 8.60% Ni, 1.56%Si, 0.015%S, 0.020%P, surplus are Fe.
Mechanical property after the modifier treatment: tensile strength (Mpa): 562.8; Surrender degree (Mpa): 347.3; Elongation after fracture (%): 14.9.
Embodiment 3
High strength heat resistant steel novel material is made up of following component in percentage by weight: 27.5%Cr, 2.49%Mn, 0.34%N, 0.39%C, 8.97% Ni, 1.60%Si, 0.030%S, 0.040%P, surplus are Fe.
Mechanical property after the modifier treatment: tensile strength (Mpa): 564.8; Surrender degree (Mpa): 360.5; Elongation after fracture (%): 16.2.
Claims (2)
1. high strength heat resistant steel novel material, it is characterized in that: said high strength heat resistant steel novel material is made up of following component in percentage by weight: 27.0～28.0%Cr, 1.50～2.50%Mn, 0.20～0.35%N, 0.30～0.40%C, 8.00～9.00% Ni, 1.30～1.70%Si ,≤0.030%S ,≤0.040%P, surplus are Fe.
2. high strength heat resistant steel novel material according to claim 1 is characterized in that: by following component in percentage by weight form 27.3～27.6%Cr, 1.6～2.00%Mn, 0.25～0.30%N, 0.33～0.36%C, 8.10～8.60% Ni, 1.40～1.60%Si ,≤0.030%S ,≤0.040%P, surplus are Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100369962A CN102534428A (en) | 2012-02-20 | 2012-02-20 | New high-strength heat-resistance steel material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100369962A CN102534428A (en) | 2012-02-20 | 2012-02-20 | New high-strength heat-resistance steel material |
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|---|---|
| CN102534428A true CN102534428A (en) | 2012-07-04 |
Family
ID=46342442
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100369962A Pending CN102534428A (en) | 2012-02-20 | 2012-02-20 | New high-strength heat-resistance steel material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141098A (en) * | 2014-07-28 | 2014-11-12 | 宁国市开源电力耐磨材料有限公司 | Wear-resistant and heat-resistant steel based on Ti and W |
| CN110656277A (en) * | 2019-11-05 | 2020-01-07 | 天津新伟祥工业有限公司 | Heat-resistant steel for automobile turbine shell and exhaust pipe and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5597456A (en) * | 1979-01-17 | 1980-07-24 | Hitachi Metals Ltd | Fe-ni-cr based heat resistant cast steel with high anti-heat check property |
| JP2001098352A (en) * | 1999-09-29 | 2001-04-10 | Sanyo Special Steel Co Ltd | High corrosion resistant free-cutting stainless steel excellent in surface finish characteristic |
| CN102230137A (en) * | 2011-06-20 | 2011-11-02 | 宣达实业集团有限公司 | Austenitic heat-resistant stainless steel and processing method thereof |
-
2012
- 2012-02-20 CN CN2012100369962A patent/CN102534428A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5597456A (en) * | 1979-01-17 | 1980-07-24 | Hitachi Metals Ltd | Fe-ni-cr based heat resistant cast steel with high anti-heat check property |
| JP2001098352A (en) * | 1999-09-29 | 2001-04-10 | Sanyo Special Steel Co Ltd | High corrosion resistant free-cutting stainless steel excellent in surface finish characteristic |
| CN102230137A (en) * | 2011-06-20 | 2011-11-02 | 宣达实业集团有限公司 | Austenitic heat-resistant stainless steel and processing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141098A (en) * | 2014-07-28 | 2014-11-12 | 宁国市开源电力耐磨材料有限公司 | Wear-resistant and heat-resistant steel based on Ti and W |
| CN110656277A (en) * | 2019-11-05 | 2020-01-07 | 天津新伟祥工业有限公司 | Heat-resistant steel for automobile turbine shell and exhaust pipe and preparation method thereof |
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Application publication date: 20120704 |