CN104109796A - Low-manganese cast grinding ball - Google Patents
Low-manganese cast grinding ball Download PDFInfo
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- CN104109796A CN104109796A CN201410336733.2A CN201410336733A CN104109796A CN 104109796 A CN104109796 A CN 104109796A CN 201410336733 A CN201410336733 A CN 201410336733A CN 104109796 A CN104109796 A CN 104109796A
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- warming
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- grinding ball
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Abstract
The invention discloses a low-manganese cast grinding ball which is composed of the following components in percentage by mass: 2.1-2.8% of C, 0.3-0.8% of Si, 0.08-0.6% of Mn, 10-23% of Cr, 0-0.05% of P, 0-0.05% of S, 0.03-0.06% of Al and the balance of Fe. The grinding ball is prepared by the following steps: S1: weighing the raw materials according to percentage by mass, smelting, and carrying out casting molding to obtain a cast grinding ball semi-finished product; and S2: putting the grinding ball semi-finished product obtained in the step S1 into the furnace, heating to 510-530 DEG C, keeping the temperature for 140-160 minutes, heating to 740-760 DEG C, keeping the temperature for 140-160 minutes, heating to 880-960 DEG C, keeping the temperature for 140-160 minutes, heating to 970-1040 DEG C, keeping the temperature for 140-160 minutes, carrying out oil quenching in quenching oil with the temperature of 75-120 DEG C for 3-14 minutes, putting in a holding furnace, heating from room temperature to 300-380 DEG C at the heating rate of 20-100 DEG C/hour, keeping the temperature for 470-490 minutes, and slowly cooling to room temperature within 450-470 minutes to obtain the cast grinding ball. The cast grinding ball has favorable comprehensive properties.
Description
Technical field
The present invention relates to cast grinding ball technical field, relate in particular to a kind of humble manganese cast grinding ball.
Background technology
Cast grinding ball is the conventional high-abrasive materials of industry such as building materials, chemical industry, metallurgy, ore dressing, cement, thermoelectricity, and it is with the favor of good wear resisting property Er Shenshou large-size enterprise group.But in prior art, thermal treatment process is perfect not, there is hardening capacity deficiency, the unequal defect of hardness in the cast grinding ball of explained hereafter, thereby often need to add precious metal to improve hardening capacity, therefore, increased the production cost of cast grinding ball.Therefore, need to improve thermal treatment process, thereby improve the over-all properties of steel ball casting, and reduce the production cost of cast grinding ball.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of humble manganese cast grinding ball is provided, over-all properties is high.The present invention is achieved by the following technical solutions, a kind of humble manganese cast grinding ball, and it is as follows that each component of described abrading-ball is pressed massfraction:
C:2.1～2.8%; Si:0.3～0.8%; Mn:0.08～0.6%; Cr:10～23%; P:0～0.05%; S:0～0.05%; Al:0.03～0.06%; Surplus is Fe;
And be prepared in the following manner:
S1: take each raw material by massfraction, carry out casting after melting, obtain cast grinding ball work in-process;
S2: the abrading-ball work in-process that obtain in S1 are entered to stove and be warming up to after 510～530 ℃ of insulation 140～160min, be warming up to after 740～760 ℃ of insulation 140～160min, be warming up to after 880～960 ℃ of insulation 140～160min, be warming up to after 970～1040 ℃ of insulation 140～160min, in being the quenching oil of 75～120 ℃, oil temperature carries out oil quenching, cool time is 3～14min, after oil quenching, put into holding furnace with the temperature rise rate of 20～100 ℃/h from room temperature is warming up to 300～380 ℃ of insulation 470～490min, 450～470min slow cooling is to room temperature, obtain cast grinding ball.
Preferably, in S2, the abrading-ball work in-process that obtain in S1 are entered to stove to be warming up to after 520 ℃ of insulation 150min, be warming up to after 740～760 ℃ of insulation 140～160min, be warming up to after 880～960 ℃ of insulation 140～160min, be warming up to after 970～1040 ℃ of insulation 140～160min, in being the quenching oil of 75～120 ℃, oil temperature carries out oil quenching, cool time is 3～14min, after oil quenching, put into holding furnace with the temperature rise rate of 20～100 ℃/h from room temperature is warming up to 300～380 ℃ of insulation 470～490min, 450～470min slow cooling is to room temperature, obtain cast grinding ball.
Preferably, in S2, the abrading-ball work in-process that obtain in S1 are entered to stove to be warming up to after 510～530 ℃ of insulation 140～160min, be warming up to after 750 ℃ of insulation 150min, be warming up to after 880～960 ℃ of insulation 140～160min, be warming up to after 970～1040 ℃ of insulation 140～160min, in being the quenching oil of 75～120 ℃, oil temperature carries out oil quenching, cool time is 3～14min, after oil quenching, put into holding furnace with the temperature rise rate of 20～100 ℃/h from room temperature is warming up to 300～380 ℃ of insulation 470～490min, 450～470min slow cooling is to room temperature, obtain cast grinding ball.
Preferably, in S2, the abrading-ball work in-process that obtain in S1 are entered to stove to be warming up to after 510～530 ℃ of insulation 140～160min, be warming up to after 740～760 ℃ of insulation 140～160min, be warming up to after 920 ℃ of insulation 150min, be warming up to after 970～1040 ℃ of insulation 140～160min, in being the quenching oil of 75～120 ℃, oil temperature carries out oil quenching, cool time is 3～14min, after oil quenching, put into holding furnace with the temperature rise rate of 20～100 ℃/h from room temperature is warming up to 300～380 ℃ of insulation 470～490min, 450～470min slow cooling is to room temperature, obtain cast grinding ball.
Preferably, in S2, the abrading-ball work in-process that obtain in S1 are entered to stove to be warming up to after 510～530 ℃ of insulation 140～160min, be warming up to after 740～760 ℃ of insulation 140～160min, be warming up to after 880～960 ℃ of insulation 140～160min, be warming up to after 1000 ℃ of insulation 150min, in being the quenching oil of 75～120 ℃, oil temperature carries out oil quenching, cool time is 3～14min, after oil quenching, put into holding furnace with the temperature rise rate of 20～100 ℃/h from room temperature is warming up to 300～380 ℃ of insulation 470～490min, 450～470min slow cooling is to room temperature, obtain cast grinding ball.
Preferably, in S2, the abrading-ball work in-process that obtain in S1 are entered to stove to be warming up to after 510～530 ℃ of insulation 140～160min, be warming up to after 740～760 ℃ of insulation 140～160min, be warming up to after 880～960 ℃ of insulation 140～160min, be warming up to after 970～1040 ℃ of insulation 140～160min, in being the quenching oil of 100 ℃, oil temperature carries out oil quenching, cool time is 8min, after oil quenching, put into holding furnace with the temperature rise rate of 20～100 ℃/h from room temperature is warming up to 300～380 ℃ of insulation 470～490min, 450～470min slow cooling is to room temperature, obtain cast grinding ball.
Preferably, in S2, the abrading-ball work in-process that obtain in S1 are entered to stove to be warming up to after 510～530 ℃ of insulation 140～160min, be warming up to after 740～760 ℃ of insulation 140～160min, be warming up to after 880～960 ℃ of insulation 140～160min, be warming up to after 970～1040 ℃ of insulation 140～160min, in being the quenching oil of 75～120 ℃, oil temperature carries out oil quenching, cool time is 3～14min, after oil quenching, put into holding furnace with the temperature rise rate of 60 ℃/h from room temperature is warming up to 350 ℃ of insulation 480min, 460min slow cooling, to room temperature, obtains cast grinding ball.
In the present invention, by the composition to cast grinding ball, be optimized, the content of P and S is controlled, reduce the disadvantageous effect that both bring cast grinding ball performance, the content of Mn and Cr is optimized, improved wear resistance and the hardness of cast grinding ball, thermal treatment process to cast grinding ball is improved, carry out the Fractional Heat-treatment mode in differing temps interval, first adopt the quadravalence section heat treatment mode that progressively heats up, and control thermal treatment temp and the heat treatment time of different steps, the alloy strengthening that improves cast grinding ball distributes mutually, improve the hardening capacity of cast grinding ball, in the mode of oil quenching, quench and optimized oil temperature and the cool time of oil quenching, promote the performance uniformity of cast grinding ball, after oil quenching, cast grinding ball is carried out to temper, tempering process is improved, controlled the temperature rise rate in drawing process, tempering temperature, tempering time and the type of cooling, promoted tempering effect, therefore, by the composition of cast grinding ball and thermal treatment process are optimized, improve the over-all properties of cast grinding ball, and reduced the production cost of cast grinding ball.
Embodiment
Below in conjunction with specific examples, the present invention is described in detail; should understand; embodiment is only for the present invention is described, rather than for the present invention is limited, and any modification of making on basis of the present invention, is equal to replacement etc. all in protection scope of the present invention.
Humble manganese cast grinding ball disclosed in this invention, in each embodiment, the massfraction of component is as shown in table 1:
Table 1 is the massfraction/% of each component of cast grinding ball of each embodiment
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| C | 2.5 | 2.1 | 2.8 |
| Si | 0.5 | 0.3 | 0.8 |
| Mn | 0.4 | 0.6 | 0.08 |
| Cr | 18 | 10 | 23 |
| P | 0.02 | 0.03 | 0.02 |
| S | 0.02 | 0.02 | 0.03 |
| Al | 0.04 | 0.06 | 0.03 |
| Fe | Surplus | Surplus | Surplus |
Embodiment 1
Be prepared according to the following steps:
S1: take each raw material by massfraction, carry out casting after melting, obtain cast grinding ball work in-process;
S2: the abrading-ball work in-process that obtain in S1 are entered to stove and be warming up to after 520 ℃ of insulation 150min, be warming up to after 750 ℃ of insulation 150min, be warming up to after 920 ℃ of insulation 150min, be warming up to after 1000 ℃ of insulation 150min, in oil temperature is the quenching oil of 100 ℃, carry out oil quenching, the cool time is 8min, after oil quenching, put into holding furnace with the temperature rise rate of 60 ℃/h from room temperature is warming up to 350 ℃ of insulation 480min, 460min slow cooling, to room temperature, obtains cast grinding ball.
Embodiment 2
Be prepared according to the following steps:
S1: take each raw material by massfraction, carry out casting after melting, obtain cast grinding ball work in-process;
S2: the abrading-ball work in-process that obtain in S1 are entered to stove and be warming up to after 530 ℃ of insulation 140min, be warming up to after 760 ℃ of insulation 140min, be warming up to after 960 ℃ of insulation 140min, be warming up to after 1040 ℃ of insulation 140min, in oil temperature is the quenching oil of 120 ℃, carry out oil quenching, the cool time is 14min, after oil quenching, put into holding furnace with the temperature rise rate of 100 ℃/h from room temperature is warming up to 380 ℃ of insulation 470min, 470min slow cooling, to room temperature, obtains cast grinding ball.
Embodiment 3
Be prepared according to the following steps:
S1: take each raw material by massfraction, carry out casting after melting, obtain cast grinding ball work in-process;
S2: the abrading-ball work in-process that obtain in S1 are entered to stove and be warming up to after 510 ℃ of insulation 160min, be warming up to after 740 ℃ of insulation 160min, be warming up to after 880 ℃ of insulation 140min, be warming up to after 970 ℃ of insulation 140min, in oil temperature is the quenching oil of 75 ℃, carry out oil quenching, the cool time is 3min, after oil quenching, put into holding furnace with the temperature rise rate of 20 ℃/h from room temperature is warming up to 300 ℃ of insulation 490min, 450min slow cooling, to room temperature, obtains cast grinding ball.
In embodiment 1-3, the properties of the cast grinding ball that test makes, performance data is as shown in table 2.
| ? | HRC | Impact toughness/Jcm -2 | The centre of sphere and surperficial HRC are poor | Percentage of damage/% |
| Embodiment 1 | 63 | 4.6 | 1.4 | 0.28 |
| Embodiment 2 | 61 | 4.5 | 1.5 | 0.30 |
| Embodiment 3 | 62 | 4.5 | 1.5 | 0.29 |
In above-mentioned table 2, data show, cast grinding ball disclosed in this invention has good over-all properties.
Claims (7)
1. a humble manganese cast grinding ball, is characterized in that, it is as follows that each component of described abrading-ball is pressed massfraction:
C:2.1～2.8%; Si:0.3～0.8%; Mn:0.08～0.6%; Cr:10～23%; P:0～0.05%; S:0～0.05%; Al:0.03～0.06%; Surplus is Fe;
And be prepared in the following manner:
S1: take each raw material by massfraction, carry out casting after melting, obtain cast grinding ball work in-process;
S2: the abrading-ball work in-process that obtain in S1 are entered to stove and be warming up to after 510～530 ℃ of insulation 140～160min, be warming up to after 740～760 ℃ of insulation 140～160min, be warming up to after 880～960 ℃ of insulation 140～160min, be warming up to after 970～1040 ℃ of insulation 140～160min, in being the quenching oil of 75～120 ℃, oil temperature carries out oil quenching, cool time is 3～14min, after oil quenching, put into holding furnace with the temperature rise rate of 20～100 ℃/h from room temperature is warming up to 300～380 ℃ of insulation 470～490min, 450～470min slow cooling is to room temperature, obtain cast grinding ball.
2. humble manganese cast grinding ball according to claim 1, it is characterized in that, in S2, the abrading-ball work in-process that obtain in S1 are entered to stove to be warming up to after 520 ℃ of insulation 150min, be warming up to after 740～760 ℃ of insulation 140～160min, be warming up to after 880～960 ℃ of insulation 140～160min, be warming up to after 970～1040 ℃ of insulation 140～160min, in being the quenching oil of 75～120 ℃, oil temperature carries out oil quenching, cool time is 3～14min, after oil quenching, put into holding furnace with the temperature rise rate of 20～100 ℃/h from room temperature is warming up to 300～380 ℃ of insulation 470～490min, 450～470min slow cooling is to room temperature, obtain cast grinding ball.
3. humble manganese cast grinding ball according to claim 1, it is characterized in that, in S2, the abrading-ball work in-process that obtain in S1 are entered to stove to be warming up to after 510～530 ℃ of insulation 140～160min, be warming up to after 750 ℃ of insulation 150min, be warming up to after 880～960 ℃ of insulation 140～160min, be warming up to after 970～1040 ℃ of insulation 140～160min, in being the quenching oil of 75～120 ℃, oil temperature carries out oil quenching, cool time is 3～14min, after oil quenching, put into holding furnace with the temperature rise rate of 20～100 ℃/h from room temperature is warming up to 300～380 ℃ of insulation 470～490min, 450～470min slow cooling is to room temperature, obtain cast grinding ball.
4. humble manganese cast grinding ball according to claim 1, it is characterized in that, in S2, the abrading-ball work in-process that obtain in S1 are entered to stove to be warming up to after 510～530 ℃ of insulation 140～160min, be warming up to after 740～760 ℃ of insulation 140～160min, be warming up to after 920 ℃ of insulation 150min, be warming up to after 970～1040 ℃ of insulation 140～160min, in being the quenching oil of 75～120 ℃, oil temperature carries out oil quenching, cool time is 3～14min, after oil quenching, put into holding furnace with the temperature rise rate of 20～100 ℃/h from room temperature is warming up to 300～380 ℃ of insulation 470～490min, 450～470min slow cooling is to room temperature, obtain cast grinding ball.
5. humble manganese cast grinding ball according to claim 1, it is characterized in that, in S2, the abrading-ball work in-process that obtain in S1 are entered to stove to be warming up to after 510～530 ℃ of insulation 140～160min, be warming up to after 740～760 ℃ of insulation 140～160min, be warming up to after 880～960 ℃ of insulation 140～160min, be warming up to after 1000 ℃ of insulation 150min, in being the quenching oil of 75～120 ℃, oil temperature carries out oil quenching, cool time is 3～14min, after oil quenching, put into holding furnace with the temperature rise rate of 20～100 ℃/h from room temperature is warming up to 300～380 ℃ of insulation 470～490min, 450～470min slow cooling is to room temperature, obtain cast grinding ball.
6. humble manganese cast grinding ball according to claim 1, it is characterized in that, in S2, the abrading-ball work in-process that obtain in S1 are entered to stove to be warming up to after 510～530 ℃ of insulation 140～160min, be warming up to after 740～760 ℃ of insulation 140～160min, be warming up to after 880～960 ℃ of insulation 140～160min, be warming up to after 970～1040 ℃ of insulation 140～160min, in being the quenching oil of 100 ℃, oil temperature carries out oil quenching, cool time is 8min, after oil quenching, put into holding furnace with the temperature rise rate of 20～100 ℃/h from room temperature is warming up to 300～380 ℃ of insulation 470～490min, 450～470min slow cooling is to room temperature, obtain cast grinding ball.
7. humble manganese cast grinding ball according to claim 1, it is characterized in that, in S2, the abrading-ball work in-process that obtain in S1 are entered to stove to be warming up to after 510～530 ℃ of insulation 140～160min, be warming up to after 740～760 ℃ of insulation 140～160min, be warming up to after 880～960 ℃ of insulation 140～160min, be warming up to after 970～1040 ℃ of insulation 140～160min, in being the quenching oil of 75～120 ℃, oil temperature carries out oil quenching, cool time is 3～14min, after oil quenching, put into holding furnace with the temperature rise rate of 60 ℃/h from room temperature is warming up to 350 ℃ of insulation 480min, 460min slow cooling is to room temperature, obtain cast grinding ball.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410336733.2A CN104109796B (en) | 2014-07-15 | 2014-07-15 | A kind of humble manganese cast grinding ball |
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| CN201410336733.2A CN104109796B (en) | 2014-07-15 | 2014-07-15 | A kind of humble manganese cast grinding ball |
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| CN104109796B CN104109796B (en) | 2016-06-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105063333A (en) * | 2015-08-07 | 2015-11-18 | 宁国东方碾磨材料股份有限公司 | Thermal processing technology of lower bainite impact resistance cast grinding ball |
| CN106282829A (en) * | 2016-08-25 | 2017-01-04 | 宁国东方碾磨材料股份有限公司 | A kind of ceramic grinding body abrasion-proof backing block and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2201992C1 (en) * | 2001-11-23 | 2003-04-10 | Открытое акционерное общество "Северсталь" | Cast iron |
| CN102877003A (en) * | 2012-08-31 | 2013-01-16 | 宁国市金六星研磨材料科技有限公司 | Superfine grinding cast grinding ball and heat treatment process thereof |
| CN103266261A (en) * | 2013-04-16 | 2013-08-28 | 安徽省宁国市宁沪钢球有限公司 | High-chromium cast iron grinding body and preparation method thereof |
-
2014
- 2014-07-15 CN CN201410336733.2A patent/CN104109796B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2201992C1 (en) * | 2001-11-23 | 2003-04-10 | Открытое акционерное общество "Северсталь" | Cast iron |
| CN102877003A (en) * | 2012-08-31 | 2013-01-16 | 宁国市金六星研磨材料科技有限公司 | Superfine grinding cast grinding ball and heat treatment process thereof |
| CN103266261A (en) * | 2013-04-16 | 2013-08-28 | 安徽省宁国市宁沪钢球有限公司 | High-chromium cast iron grinding body and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105063333A (en) * | 2015-08-07 | 2015-11-18 | 宁国东方碾磨材料股份有限公司 | Thermal processing technology of lower bainite impact resistance cast grinding ball |
| CN106282829A (en) * | 2016-08-25 | 2017-01-04 | 宁国东方碾磨材料股份有限公司 | A kind of ceramic grinding body abrasion-proof backing block and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN104109796B (en) | 2016-06-08 |
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Denomination of invention: A kind of low micromanganese casting grinding ball Effective date of registration: 20220819 Granted publication date: 20160608 Pledgee: China Construction Bank Corporation Ningguo sub branch Pledgor: NINGGUO DONGFANG MILLING MATERIAL CO.,LTD. Registration number: Y2022980013025 |
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Date of cancellation: 20230927 Granted publication date: 20160608 Pledgee: China Construction Bank Corporation Ningguo sub branch Pledgor: NINGGUO DONGFANG MILLING MATERIAL CO.,LTD. Registration number: Y2022980013025 |