CN103343290A - High-manganese steel and preparation method thereof - Google Patents
High-manganese steel and preparation method thereof Download PDFInfo
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- CN103343290A CN103343290A CN 201310281531 CN201310281531A CN103343290A CN 103343290 A CN103343290 A CN 103343290A CN 201310281531 CN201310281531 CN 201310281531 CN 201310281531 A CN201310281531 A CN 201310281531A CN 103343290 A CN103343290 A CN 103343290A
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Abstract
The invention discloses high-manganese steel and a preparation method thereof, belonging to the technical field of wear-resistant materials. The high-manganese steel contains the following chemical ingredients in percentage by mass: 1.0-1.5% of carbon, 15-20% of manganese, 0.3-0.6% of silicon, 1-3% of chromium, 0.2-0.5% of molybdenum, 0-0.1% of cuprum, 0.001-0.005% of boron, 0-0.03% of rare earth, not higher than 0.03% of phosphorus, not higher than 0.03% of sulfur and the balance of ferrum. The preparation method of the high-manganese steel, disclosed by the invention, comprises the following steps of: (a) preparing: selecting scrap steel and waste manganese steel as raw materials, and preparing an appropriate alloy raw material; (b) molding; (c) smelting; (d) casting: controlling the casting temperature to be 1,500-1,550 DEG C and the time for heat preservation to be 3 h; (e) carrying out sand cleaning: controlling the sand cleaning time according to the size and thickness of a cast part; (f) burnishing and checking the size of the cast part; and (g) carrying out heat treatment: heating to the temperature of 1,050-1,110 DEG C, carrying out heat preservation for 4 h, and carrying out quick tapping and air cooling. The high-manganese steel and the preparation method thereof have the beneficial effects that the impact resistance and toughness of the high-manganese steel are improved, the production process is simple, the cost is low, and the market prospects are good.
Description
Technical field
The present invention relates to a kind of manganese steel, specifically is a kind of high mangaenese steel and manufacture method thereof, belongs to the high-abrasive material technical field.
Background technology
Antiwear high manganese steel relatively is applicable to the operating mode that surging force is bigger, particularly high mangaenese steel is under strong impact, extruding condition, the work hardening phenomenon takes place rapidly and has good abrasion resistance in the surface, generally for the manufacture of grinder hammerhead, jaw, and slag drying machine tooth plate and excavator bucket teeth.In the use of reality, the fracture of high mangaenese steel product appears through regular meeting, and just the toughness of high mangaenese steel still is undesirable, need keep improving its toughness further under the good wear resisting property ground prerequisite of high mangaenese steel now.Can add alloying elements, improve it simultaneously and make production technique.
Summary of the invention
Problem at above-mentioned prior art exists the invention provides a kind of high mangaenese steel and manufacture method thereof, under the condition that keeps its good abrasion resistance, increases its toughness.
To achieve these goals, a kind of high mangaenese steel of the present invention, it contains following chemical components in mass percent: carbon: 1.0%～1.5%, manganese: 15%～20%, silicon: 0.3%～0.6%, chromium: 1%～3%, molybdenum: 0.2%～0.5%, copper: 0～0.1%, boron: 0.001%～0.005%, rare earth: 0%～0.03%, phosphorus≤0.03%, sulphur≤0.03%, all the other are iron.
Further, high mangaenese steel contains following chemical components in mass percent: carbon: 1.3%, and manganese: 16%, silicon: 0.4%, chromium: 2%, molybdenum: 0.4%, copper: 0.05%, boron: 0.004%, rare earth: 0.02%, phosphorus≤0.03%, sulphur≤0.03%, surplus is iron.
A kind of high mangaenese steel preparation method of the present invention may further comprise the steps:
A) preparation work: select steel scrap as starting material, prepare suitable alloy raw material, to satisfy the composition requirement: carbon: 1.0%～1.5%, manganese: 15%～20%, silicon: 0.3%～0.6%, chromium: 1%～3%, molybdenum: 0.2%～0.5%, copper: 0～0.1%, boron: 0.001%～0.005%, rare earth: 0%～0.03%, phosphorus≤0.03%, sulphur≤0.03%, all the other are iron;
B) moulding: select quartz sand as moulding sand, carry out CO after moulding is good
2Solidification treatment is coated with afterwards and coats the baking of lighting a fire again, last mould assembling;
C) smelt: will above-mentioned starting material by electrosmelting of intermediate frequency, and add alloying element and carry out the composition adjustment, the composition range of the molten steel that assurance is come out is: carbon: 1.0%～1.5%, manganese: 15%～20%, silicon: 0.3%～0.6%, chromium: 1%～3%, molybdenum: 0.2%～0.5%, copper: 0～0.1%, boron: 0.001%～0.005%, rare earth: 0%～0.03%, phosphorus≤0.03%, sulphur≤0.03%, all the other are iron;
D) cast: the liquid steel temperature control of coming out is poured into a mould at 1550 ℃～1600 ℃, and teeming temperature is controlled at 1500 ℃～1550 ℃, and soaking time is 3 hours;
E) sand removal: behind the casting complete, control the sand removal time according to foundry goods size and thickness;
F) polishing, check casting dimension;
G) thermal treatment: foundry goods is placed on is warmed up to 1050 ℃～1110 ℃ in the heat treatment furnace, be incubated afterwards, be incubated 4 hours; Come out of the stove fast and carry out air cooling, the air cooling speed control in 10 ℃/min～15 ℃/min.
The invention has the beneficial effects as follows: 1, each the alloying element ratio in this high mangaenese steel is reasonable, guarantees that the high mangaenese steel wear resisting property preferably under the situation, improves its shock resistance and toughness; Hardness of cast form can reach 200HB-300HB, and impelling strength can reach 45 J/cm
2-5500J/cm
22, this production technique is simple, and production cost is low, and market outlook are good.
Embodiment
The invention will be further described below in conjunction with embodiment.
A kind of high mangaenese steel of the present invention and preparation method thereof may further comprise the steps:
A) preparation work: select steel scrap as starting material, prepare suitable alloy raw material (as copper, molybdenum-iron, ferro-boron, ferromanganese), require carbon with the composition that satisfies high mangaenese steel: 1.0%～1.5%, manganese: 15%～20%, silicon: 0.3%～0.6%, chromium: 1%～3%, molybdenum: 0.2%～0.5%, copper: 0～0.1%, boron: 0.001%～0.005%, rare earth: 0～0.03%, phosphorus≤0.03%, sulphur≤0.03%, all the other are iron;
B) moulding: select quartz sand as moulding sand, carry out CO after moulding is good
2Solidification treatment is coated the carbon coating baking of lighting a fire again afterwards, to reduce the moisture in the moulding sand, last mould assembling;
C) smelt: will above-mentioned starting material by electrosmelting of intermediate frequency, and add alloying element and carry out the composition adjustment, the molten steel that assurance is come out satisfies the described composition range of step a);
D) cast: the liquid steel temperature control of coming out is poured into a mould at 1550 ℃～1600 ℃, and teeming temperature is controlled at 1500 ℃～1550 ℃, and soaking time is 3 hours;
E) sand removal: behind the casting complete, control the sand removal time of unpacking according to foundry goods size and thickness;
F) polishing, check casting dimension;
G) thermal treatment: foundry goods is placed on is warmed up to 1050 ℃～1110 ℃ in the heat treatment furnace, be incubated afterwards, be incubated 4 hours; Come out of the stove fast and carry out air cooling, the air cooling speed control in 10 ℃/min～15 ℃/min.
Claims (3)
1. a high mangaenese steel is characterized in that, described high mangaenese steel contains following chemical components in mass percent: carbon: 1.0%～1.5%, manganese: 15%～20%, silicon: 0.3%～0.6%, chromium: 1%～3%, molybdenum: 0.2%～0.5%, copper: 0～0.1%, boron: 0.001%～0.005%, rare earth: 0～0.03%, phosphorus≤0.03%, sulphur≤0.03%, all the other are iron.
2. according to the described a kind of high mangaenese steel of claim 1, it is characterized in that described high mangaenese steel contains following chemical components in mass percent: carbon: 1.3%, manganese: 16%, silicon: 0.4%, chromium: 2%, molybdenum: 0.4%, copper: 0.05%, boron: 0.004%, rare earth: 0.02%, phosphorus≤0.03%, sulphur≤0.03%, surplus are iron.
3. the preparation method of a high mangaenese steel may further comprise the steps:
A) preparation work: select steel scrap as starting material, prepare suitable alloy raw material, to satisfy the composition requirement of the described high mangaenese steel of claim 1;
B) moulding: select quartz sand as moulding sand, carry out CO after moulding is good
2Solidification treatment is coated with afterwards and coats the baking of lighting a fire again, last mould assembling;
C) smelt: will above-mentioned starting material by electrosmelting of intermediate frequency, and add alloying element and carry out the composition adjustment, the molten steel that assurance is come out satisfies the described composition range of claim 1;
D) cast: the liquid steel temperature control of coming out is poured into a mould at 1550 ℃～1600 ℃, and teeming temperature is controlled at 1500 ℃～1550 ℃, and soaking time is 3 hours;
E) sand removal: behind the casting complete, control the sand removal time according to foundry goods size and thickness;
F) polishing, check casting dimension;
G) thermal treatment: foundry goods is placed on is warmed up to 1050 ℃～1110 ℃ in the heat treatment furnace, be incubated afterwards, be incubated 4 hours; Come out of the stove fast and carry out air cooling, the air cooling speed control in 10 ℃/min～15 ℃/min.
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| CN 201310281531 CN103343290A (en) | 2013-07-06 | 2013-07-06 | High-manganese steel and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988431A (en) * | 2015-05-27 | 2015-10-21 | 芜湖银海机械制造有限公司 | High manganese steel sieve plate for crusher and preparation method of sieve plate |
| CN104988426A (en) * | 2015-05-27 | 2015-10-21 | 芜湖银海机械制造有限公司 | High-manganese steel hammer for breaker and manufacturing method of hammer |
| CN110076296A (en) * | 2019-04-24 | 2019-08-02 | 焦作市威尔瑞福工业技术有限公司 | A kind of NEW TYPE OF COMPOSITE tooth plate casting method of high-power high throughput crusher |
-
2013
- 2013-07-06 CN CN 201310281531 patent/CN103343290A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988431A (en) * | 2015-05-27 | 2015-10-21 | 芜湖银海机械制造有限公司 | High manganese steel sieve plate for crusher and preparation method of sieve plate |
| CN104988426A (en) * | 2015-05-27 | 2015-10-21 | 芜湖银海机械制造有限公司 | High-manganese steel hammer for breaker and manufacturing method of hammer |
| CN110076296A (en) * | 2019-04-24 | 2019-08-02 | 焦作市威尔瑞福工业技术有限公司 | A kind of NEW TYPE OF COMPOSITE tooth plate casting method of high-power high throughput crusher |
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Application publication date: 20131009 |