CN102094112A - Heat treatment process of alloy steel product - Google Patents
Heat treatment process of alloy steel product Download PDFInfo
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- CN102094112A CN102094112A CN 200910252450 CN200910252450A CN102094112A CN 102094112 A CN102094112 A CN 102094112A CN 200910252450 CN200910252450 CN 200910252450 CN 200910252450 A CN200910252450 A CN 200910252450A CN 102094112 A CN102094112 A CN 102094112A
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Abstract
The invention relates to a heat treatment process of an alloy steel product for a train buffer. The alloy steel product comprises the following components in percentage by weight: 0.25-0.35 percent of C, 0.8-1.2 percent of Mn, 0.20-0.60 percent of Si, 0.30-0.70 percent of Cr, 0.10-0.30 percent of Mo and 0.1-0.3 percent of Ni. The heat treatment process comprises the following steps of: annealing: increasing the temperature of an alloy steel to 900+/-10 DEG C, keeping the temperature for 60+/-5 minutes, and discharging for air cooling; quenching: increasing the temperature of the alloy steel to 550+/-10 DEG C, keeping the temperature for 60+/-5 minutes, then continuously increasing the temperature to 880+/-10 DEG C, keeping the temperature for 90+/-5 minutes, and carrying out water cooling; tempering: increasing the temperature of the alloy steel to 580+/-10 DEG C, keeping the temperature for 150+/-5 minutes, and carrying out the air cooling. The alloy steel subjected to heat treatment is suitable for a product which meets the requirements for long-term work in an environment bearing higher impact, such as the train buffer.
Description
Technical field
The present invention relates to a kind of thermal treatment process of steel alloy product, particularly can be used for making the steel alloy product of train snubber.
Background technology
Material, for example intensity of steel alloy, hardness, plasticity and toughness unity of contradictions body normally.Select rational alloying constituent and content to reach preferred alloy material, be the direction of making great efforts in the industry always.
Train with snubber be used for relaxing train be in operation owing to the variation of the hauling capacity of a locomotive or when starting, braking and the shunting service vehicle collide impact of collision and the vibration that causes mutually.Snubber has the function of shock and vibration between the dissipation vehicle, thereby alleviates the destruction to body construction and lade.
Based on such use, provide that a kind of and steel alloy product adapt thermal treatment process, when requiring, have low, the good proper intensity of metal cost, hardness, plasticity and toughness and thermal processing equipment is simple, easy to operate, environmental pollution is little characteristics to satisfy machinery.Rational heat treatment technology also will have positive effect to the mechanical property of steel alloy, alloying constituent is used more effectively.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of thermal treatment process that adapts with the novel alloy steel: the chemical ingredients of wherein said novel alloy steel and mass percent thereof are: C:0.25-0.35; Mn:0.8-1.2; Si:0.20-0.60; Cr:0.30-0.70; Mo:0.10-0.30; Ni:0.1-0.3, described thermal treatment process comprises:
One, annealing: place temperature to be lower than in 100 ± 10 ℃ the annealing furnace steel alloy, be warmed up to 900 ± 10 ℃, be incubated 60 ± 5 minutes, when temperature is lower than 600 ℃, come out of the stove air cooling.
Two, quench: place temperature to be lower than in 100 ± 10 ℃ the quenching furnance steel alloy, be warmed up to 550 ± 10 ℃, be incubated 60 ± 5 minutes, continue to be warmed up to 880 ± 10 ℃ then, be incubated 90 ± 5 minutes, water-cooled.
Three, tempering: place temperature to be lower than in 50 ± 10 ℃ the tempering stove steel alloy, be warmed up to 580 ± 10 ℃, be incubated 150 ± 5 minutes, air cooling.
This product can also carry out following preferred on above-mentioned basis.C：0.27-0.32；Mn：0.80-0.90；M0：0.10-0.20；Ni：0.10-0.20。S:0-0.05 in the preferred in addition product; P:0-0.05.
Steel alloy product after the thermal treatment of the present invention, its tensile strength: 795MPA, yield strength: 655MPA, unit elongation: 14%, shrinking percentage: 30%, hardness HB:241-302.And be suitable for the such product that is subjected to bigger surging force of train snubber.
Embodiment
The invention provides a kind of thermal treatment process that adapts with the novel alloy steel, the chemical ingredients of wherein said steel alloy product and mass percent thereof are:
C：0.25-0.35；Mn：0.8-1.2；Si：0.20-0.60；Cr：0.30-0.70；Mo：0.10-0.30；Ni：0.1-0.3。
Wherein the major function that each alloy had is:
Carbon (C): carbon content is high more, and the intensity of steel and hardness value increase, and plasticity and toughness value reduce;
Silicon (Si): reinforced ferrite, improve tensile strength and yield strength, improve thermotolerance and solidity to corrosion, reduce toughness and plasticity;
Manganese (Mn): improve intensity, hardness and wear resistance;
Chromium (Cr): reduce the thermal conductivity of steel, can improve wear resistance;
Molybdenum (Mo): reinforced ferrite, improve high-temperature behavior, improve fragility;
Nickel (Ni): enlarging the austenitic area, is the effective element of austenitizing, improves intensity and does not significantly reduce plasticity, and good corrosion resistance is arranged.
Carry out the thermal treatment process of following order at above-mentioned steel alloy:
One, annealing: place temperature to be lower than in 100 ± 10 ℃ the annealing furnace steel alloy, be warmed up to 900 ± 10 ℃, be incubated 60 ± 5 minutes, when temperature is lower than 600 ℃, come out of the stove air cooling.
Two, quench: place temperature to be lower than in 100 ± 10 ℃ the quenching furnance steel alloy, be warmed up to 550 ± 10 ℃, be incubated 60 ± 5 minutes, continue to be warmed up to 880 ± 10 ℃ then, be incubated 90 ± 5 minutes, water-cooled.
Three, tempering: place temperature to be lower than in 50 ± 10 ℃ the tempering stove steel alloy, be warmed up to 580 ± 10 ℃, be incubated 150 ± 5 minutes, air cooling.
Steel alloy product of the present invention, its tensile strength: 795MPA, yield strength: 655MPA, unit elongation: 14%, shrinking percentage: 30%, hardness HB:241-302.
This product can also carry out following preferred on above-mentioned basis.C：0.27-0.32；Mn：0.80-0.90；Mo：0.10-0.20；Ni：0.10-0.20。In addition can also be further preferred, S:0-0.05 in the product; P:0-0.05.
The announcement of the technical scheme by above-mentioned steel alloy as seen, the steel alloy among the present invention has: production technique is simple, cost is low, obdurability is high, hardening capacity and hardenability is good and free of contamination novel product.And be suitable in the requirement that is suitable for the so medium-term and long-term work of the environment that is subjected to bigger surging force of train snubber.
The embodiment that is disclosed among the present invention will obtain embodying and protection by claim, any according to the present invention in resulting enlightenment, among the scope that all falls into the present invention and protected.
Claims (4)
1. the thermal treatment process of a steel alloy product, it is characterized in that: its chemical ingredients and mass percent thereof are: C:0.25-0.35; Mn:0.8-1.2; Si:0.20-0.60; Cr:0.30-0.70; Mo:0.10-0.30; Ni:0.1-0.3, described thermal treatment process comprises:
One, annealing: place temperature to be lower than in 100 ± 10 ℃ the annealing furnace steel alloy, be warmed up to 900 ± 10 ℃, be incubated 60 ± 5 minutes, when temperature is lower than 600 ℃, come out of the stove air cooling.
Two, quench: place temperature to be lower than in 100 ± 10 ℃ the quenching furnance steel alloy, be warmed up to 550 ± 10 ℃, be incubated 60 ± 5 minutes, continue to be warmed up to 880 ± 10 ℃ then, be incubated 90 ± 5 minutes, water-cooled.
Three, tempering: place temperature to be lower than in 50 ± 10 ℃ the tempering stove steel alloy, be warmed up to 580 ± 10 ℃, be incubated 150 ± 5 minutes, air cooling.
2. the resultant steel alloy of the thermal treatment process of steel alloy product according to claim 1 is characterized in that: tensile strength: 795MPA, and yield strength: 655MPA, unit elongation: 14%, shrinking percentage: 30%, hardness HB:241-302.
3. the thermal treatment process of steel alloy product according to claim 1 is characterized in that: described steel alloy product also has sulphur (S) and phosphorus (P), and the percentage composition of described sulphur (S) is 0-0.05, and the percentage composition of described phosphorus (P) is 0-0.05.
4. according to the resultant steel alloy of thermal treatment process of arbitrary described steel alloy product in the claim 1 to 3, it is characterized in that: it is applicable to makes shock proof train snubber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910252450 CN102094112B (en) | 2009-12-09 | 2009-12-09 | Heat treatment process of alloy steel product |
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| CN 200910252450 CN102094112B (en) | 2009-12-09 | 2009-12-09 | Heat treatment process of alloy steel product |
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| CN102094112B CN102094112B (en) | 2012-12-19 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978534A (en) * | 2012-11-05 | 2013-03-20 | 江苏金源锻造股份有限公司 | Method for manufacturing high strength and high toughness alloy steel |
| CN103436766A (en) * | 2013-07-13 | 2013-12-11 | 瞿立双 | Preparation method for nickel-chrome-containing alloy steel |
| CN103484773A (en) * | 2013-09-10 | 2014-01-01 | 常熟市新洲机械制造厂 | Novel anti-wear food machinery tool |
| CN103484607A (en) * | 2013-09-10 | 2014-01-01 | 常熟市新洲机械制造厂 | Thermal treatment technique for anti-wear food tool material |
| CN104831041A (en) * | 2015-05-14 | 2015-08-12 | 广西梧州运龙港船机械制造有限公司 | Heat treatment method of stern rudder rudderstock |
| CN105506468A (en) * | 2015-12-21 | 2016-04-20 | 宁波金汇精密铸造有限公司 | Preparation method of buffer |
| CN108103286A (en) * | 2018-01-23 | 2018-06-01 | 合肥康之恒机械科技有限公司 | A kind of heat treatment method of steel alloy |
| CN112846068A (en) * | 2020-12-30 | 2021-05-28 | 宁波金汇精密铸造有限公司 | Casting method of casting and casting |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1155159A4 (en) * | 1999-01-28 | 2002-11-20 | Buckeye Steel Castings Co | Cast steel composition for railway components |
| CN101353763A (en) * | 2007-07-23 | 2009-01-28 | 宝山钢铁股份有限公司 | High hardness wear resistant hot-rolled strip steel and manufacturing method thereof |
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2009
- 2009-12-09 CN CN 200910252450 patent/CN102094112B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978534A (en) * | 2012-11-05 | 2013-03-20 | 江苏金源锻造股份有限公司 | Method for manufacturing high strength and high toughness alloy steel |
| CN102978534B (en) * | 2012-11-05 | 2014-12-10 | 江苏金源锻造股份有限公司 | Method for manufacturing high strength and high toughness alloy steel |
| CN103436766A (en) * | 2013-07-13 | 2013-12-11 | 瞿立双 | Preparation method for nickel-chrome-containing alloy steel |
| CN103484773A (en) * | 2013-09-10 | 2014-01-01 | 常熟市新洲机械制造厂 | Novel anti-wear food machinery tool |
| CN103484607A (en) * | 2013-09-10 | 2014-01-01 | 常熟市新洲机械制造厂 | Thermal treatment technique for anti-wear food tool material |
| CN104831041A (en) * | 2015-05-14 | 2015-08-12 | 广西梧州运龙港船机械制造有限公司 | Heat treatment method of stern rudder rudderstock |
| CN105506468A (en) * | 2015-12-21 | 2016-04-20 | 宁波金汇精密铸造有限公司 | Preparation method of buffer |
| CN108103286A (en) * | 2018-01-23 | 2018-06-01 | 合肥康之恒机械科技有限公司 | A kind of heat treatment method of steel alloy |
| CN112846068A (en) * | 2020-12-30 | 2021-05-28 | 宁波金汇精密铸造有限公司 | Casting method of casting and casting |
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| CN102094112B (en) | 2012-12-19 |
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