CN102978518B - Rare earth wear-resisting alloy steel and production method thereof - Google Patents
Rare earth wear-resisting alloy steel and production method thereof Download PDFInfo
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- CN102978518B CN102978518B CN201210555748.9A CN201210555748A CN102978518B CN 102978518 B CN102978518 B CN 102978518B CN 201210555748 A CN201210555748 A CN 201210555748A CN 102978518 B CN102978518 B CN 102978518B
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Abstract
The invention discloses rare earth wear-resisting alloy steel, which is prepared from the following components in percentage by mass: 0.25 to 0.45 percent of carbon, 0.5 to 1.5 percent of manganese, 0.5 to 1.4 percent of silicon, 1.1 to 2.5 percent of chromium, 0.15 to 0.5 percent of molybdenum, 0.1 to 0.5 percent of vanadium, 0.2 to 0.3 percent of lanthanum cerium rare earth alloy, 0.1 to 0.15 percent of copper, 0 to 0.03 percent of sulphur, 0 to 0.03 percent of phosphorus and the balance being iron. The rare earth wear-resisting alloy steel is high in intensity and high in plasticity and flexibility. The invention also provides a production method for the rare earth wear-resisting alloy steel.
Description
technical field:
The present invention relates to a kind of high-abrasive material and production method thereof, particularly be a kind of rare earth wear-resisting alloy steel and production method thereof.
background technology:
Wear resistant alloy steel is mainly used in mineral disintegrating apparatus, comprise hammer mill, roller crusher, jaw crusher etc., because it is better with respect to other materials wear resisting property, after casting, be installed in disintegrating apparatus and be directly used in mineral are carried out to fragmentation, therefore its wear resisting property directly determines the work-ing life of crusher.
The wear resistant alloy steel generally adopting is at present high manganese steel material, its cast member trade mark mainly comprises ZGMn13-1～ZGMn13-5, wherein contain the elements such as carbon, manganese, silicon, phosphorus, carbon accounts for 0.75%～1.45%, manganese element accounts for 11.00%～14.00%, its casting hardness≤HRC32, and therefore wear resisting property is still not ideal enough, and Young's modulus is less, easily embrittlement.
In order to improve some use properties of metallic substance, comprise intensity, plasticity, toughness wait, conventionally to carry out corresponding thermal treatment to metallic substance, comprise annealing, modified etc.In thermal treatment process, modified is the most frequently used mode that improves material over-all properties, embodiment is: after quenching, carry out high tempering, operating method is as follows: first by metallic substance continuous heating after quenching temperature, invade and in a kind of quenchant, be cooled to rapidly room temperature, then material is heated to 500～680 DEG C, after maintenance for some time, carries out cooling.
Traditional modified mode can be improved the physicals of metallic substance, but there is still certain defect, comprise: in the process of continuous heating, the uneven situation of being heated appears in metallic substance, especially larger to gauge material, outside temperature has reached corresponding temperature, internal temperature is but starkly lower than outside temperature, after Overheating Treatment, there will be the inside and outside physicals of metallic substance inhomogeneous, and there is the phenomenon of stress concentration, when the single kind of intrusion medium quenches, there is the shortcomings such as distortion.
summary of the invention:
The object of the invention is, in order to overcome above deficiency, provides a kind of intensity high, the rare earth wear-resisting alloy steel of plasticity, good toughness.Another object of the present invention is the production method for rare earth wear-resisting alloy steel is provided.
The object of the present invention is achieved like this:
Rare earth wear-resisting alloy steel of the present invention, comprises following component by weight percentage:
Carbon 0.25%～0.45%, manganese 0.5%～1.5%, silicon 0.5%～1.4%, chromium 1.1%～2.5%, molybdenum 0.15%～0.5%, vanadium 0.1%～0.5%, lanthanum cerium mischmetal alloy 0.2%～0.3%, copper 0.1%～0.15%, sulphur 0～0.03%, phosphorus 0～0.03%, iron surplus.
The production method of rare earth wear-resisting alloy steel of the present invention, comprises the following steps:
1) prepare burden in proportion;
2) batching is sent into intermediate frequency furnace melting;
3) sand mold lost foam casting, carries out surperficial rounding processing after having cast, obtain rare earth wear-resisting alloy steel blank;
4) thermal treatment;
5) finishing polishing, obtains rare earth ground wear-resisting alloy steel finished product.
When above-mentioned heat treatment step, by rare earth wear-resisting alloy steel blank heating to 450～550 DEG C,
be incubated 2.5～3.5 hours, continue to be heated to 950～1050 DEG C,
be incubated 2.5～3.5 hoursafter put into water and be cooled to rapidly 200～300 DEG C, then proceed to rapidly in oil and be cooled to room temperature, the rare earth wear-resisting alloy steel through quench treatment is heated to
250~
350 DEG C, be incubated 2.5～3.5 DEG C hours, the cooling rare earth wear-resisting alloy steel finished product that obtains in air, wear-resisting alloy steel blank inner bulk temperature of being fully heated that flows in heat-processed is consistent, can reduce material thermal stresses, strengthening material interior tissue, strongthener overall performance.To, by water, oily double quenching processing, can obviously reduce physical deformation and the cracking of blank, be convenient to hot alignment.Alloy steel material through quench treatment is heated to
250~
350 DEG C, and insulation for some time, and then in air, carry out coolingly, pass through
temper, further improve intensity, plasticity and the toughness of alloy steel material, mechanical property is good.
Carbon in rare earth wear-resisting alloy steel of the present invention and manganese content are well below traditional high manganese steel material, and lithium and lanthanum cerium mischmetal alloy are increased, lithium can reinforced wear-resistant steel alloy inside crystal grain, rare earth alloy can strengthen deoxidizing capacity and the crystal grain thinning of wear-resisting alloy steel in castingprocesses, improves its physicals.
Wear-resisting alloy steel of the present invention completes after the techniques such as casting, thermal treatment, and its hardness >=HRC55, in having hard high-wearing feature energy, also has strong toughness, makes it be subject to impact and is not easy embrittlement, and comprehensive physical performance has reached desirable effect.
brief description of the drawings:
Fig. 1 is production method treatment process figure of the present invention.
embodiment:
Embodiment 1:
The present embodiment 1 rare earth wear-resisting alloy steel comprises following component by weight percentage:
Rare earth wear-resisting alloy steel, comprises following component by weight percentage:
Carbon 0.35%, manganese 1.0%, silicon 1.0%, chromium 1.8%, molybdenum 0.35%, vanadium 0.39%, lanthanum cerium mischmetal alloy 0.25, copper 0.13%, sulphur 0.019%, phosphorus 0.01%, iron surplus.
The production method of the present embodiment 1 rare earth wear-resisting alloy steel comprises the following steps:
1) prepare burden in proportion;
2) batching is sent into intermediate frequency furnace melting;
3) sand mold lost foam casting, carries out surperficial rounding processing after having cast, obtain rare earth wear-resisting alloy steel blank;
4) thermal treatment;
5) finishing polishing, obtains rare earth ground wear-resisting alloy steel finished product.
In above-mentioned heat treatment step, be (see figure 1) rare earth wear-resisting alloy steel blank heating to 500 DEG C left and right (from O point to A point), be incubated 3 hours (from A point to B point), rare earth wear-resisting alloy steel blank inside is fully heated, after consistent inside and outside temperature reaches, continue heating, temperature is heated to 1000 DEG C (from B points to C point), then is incubated 3 hours (from C point to D point), make rare earth wear-resisting alloy steel blank internal temperature also reach quenching temperature.By in rare earth wear-resisting alloy steel blank invasion water, be cooled to rapidly 200～300 DEG C of left and right (from D point to E point), proceed to rapidly in oil, carry out cooling, until room temperature (from E point to F point).The wear-resisting new alloy steel of rare earth through quench treatment is heated to
250~
350 DEG C(from G point to H point), and 3 hours (from H point to I point) of insulation, and then in air, be cooled to room temperature (from I point to M point).
Embodiment 2:
The present embodiment 2 rare earth wear-resisting alloy steels comprise following component by weight percentage:
Carbon 0.25%, manganese 0.5%, silicon 0.5%, chromium 1.1%, molybdenum 0.15%, vanadium 0.1%, lanthanum cerium mischmetal alloy 0.2%, copper 0.1%, iron surplus.
The production method of the present embodiment 2 rare earth wear-resisting alloy steels is with embodiment 1.
Embodiment 3:
The present embodiment 3 rare earth wear-resisting alloy steels comprise the following steps by weight percentage:
Carbon 0.45%, manganese 1.5%, silicon 1.4%, chromium 2.5%, molybdenum 0.5%, vanadium 0.5%, lanthanum cerium mischmetal alloy 0.3%, copper 0.15%, sulphur 0.02%, phosphorus 0.02%, iron surplus.
The production method of the present embodiment 3 rare earth wear-resisting alloy steels is with embodiment 1.
Above-described embodiment is that foregoing of the present invention is further described, but this should be interpreted as to the scope of the above-mentioned theme of the present invention only limits to above-described embodiment.All technology realizing based on foregoing all belong to scope of the present invention.
Claims (1)
1. the production method of rare earth wear-resisting alloy steel, is characterized in that comprising the following steps:
1) prepare burden in proportion: rare earth wear-resisting alloy steel comprises following component by weight percentage:
Carbon 0.25%～0.45%, manganese 0.5%～1.5%, silicon 0.5%～1.4%, chromium 1.1%～2.5%, molybdenum 0.15%～0.5%, vanadium 0.1%～0.5%, lanthanum cerium mischmetal alloy 0.2%～0.3%, copper 0.1%～0.15%, sulphur 0～0.03%, phosphorus 0～0.03%, iron surplus;
2) batching is sent into intermediate frequency furnace melting;
3) sand mold lost foam casting, carries out surperficial rounding processing after having cast, obtain rare earth wear-resisting alloy steel blank;
4) thermal treatment: by rare earth wear-resisting alloy steel blank heating to 450～550 DEG C, be incubated 2.5～3.5 hours, continue to be heated to 950～1050 DEG C, be incubated and after 2.5～3.5 DEG C hours, put into water and be cooled to rapidly 200～300 DEG C, proceed to rapidly and in oil, be cooled to room temperature, again the rare earth wear-resisting alloy steel through quench treatment is heated to 250～350 DEG C, is incubated 2.5～3.5 DEG C hours, cooling in air;
5) finishing polishing, obtains rare earth wear-resisting alloy steel finished product.
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| CN102978518B true CN102978518B (en) | 2014-07-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106119697A (en) * | 2016-06-21 | 2016-11-16 | 安庆市灵宝机械有限责任公司 | A kind of high tungsten wear-resisting alloy steel preparation method |
| CN105886942A (en) * | 2016-06-21 | 2016-08-24 | 安庆市灵宝机械有限责任公司 | High-tungsten wear-resistant alloy steel |
| CN107299199A (en) * | 2017-07-26 | 2017-10-27 | 柳州金特新型耐磨材料股份有限公司 | Easy processing wear-resisting steel plate and preparation method thereof |
| CN110819894B (en) * | 2019-10-23 | 2021-07-20 | 成都兴锐新材料有限公司 | Wear-resistant alloy steel and heat treatment process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059940A (en) * | 1991-06-24 | 1992-04-01 | 河北工学院 | High-toughness antiwear lining plate of big ball mill and manufacturing process thereof |
| CN102534432A (en) * | 2012-01-10 | 2012-07-04 | 清华大学 | Method for manufacturing and tempering bainite wear-resistant steel and steel pipe |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58123860A (en) * | 1982-01-18 | 1983-07-23 | Daido Steel Co Ltd | Hot working tool steel |
| JPS58123859A (en) * | 1982-01-18 | 1983-07-23 | Daido Steel Co Ltd | Hot working tool steel |
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2012
- 2012-12-20 CN CN201210555748.9A patent/CN102978518B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059940A (en) * | 1991-06-24 | 1992-04-01 | 河北工学院 | High-toughness antiwear lining plate of big ball mill and manufacturing process thereof |
| CN102534432A (en) * | 2012-01-10 | 2012-07-04 | 清华大学 | Method for manufacturing and tempering bainite wear-resistant steel and steel pipe |
Non-Patent Citations (2)
| Title |
|---|
| JP昭58-123859A 1983.07.23 |
| JP昭58-123860A 1983.07.23 |
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