CN104278203B - A kind of capsule shape wear body - Google Patents
A kind of capsule shape wear body Download PDFInfo
- Publication number
- CN104278203B CN104278203B CN201410225920.3A CN201410225920A CN104278203B CN 104278203 B CN104278203 B CN 104278203B CN 201410225920 A CN201410225920 A CN 201410225920A CN 104278203 B CN104278203 B CN 104278203B
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- China
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- wear body
- capsule shape
- uniform velocity
- foundry goods
- cylinder
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/04—Hardening by cooling below 0 degrees Celsius
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
Abstract
The invention discloses a kind of capsule shape wear body, its middle part is cylinder, cylinder two ends are symmetrical hemisphere, cylinder axis is square to cross sectional shape, described capsule shape wear body surface exists without crest line, smooth transition between each face, and described capsule shape abrasive body adopts high chrome material to make, in preparation process, mix appropriate niobium, and adopt at the uniform velocity heating mode heating of segmentation, after quenching step, carry out post bake, repeat subsequently repeatedly cold treatment and tempering. A kind of capsule shape wear body that the present invention proposes, the mechanical performance of guarantee wear body, reduces the generation of cracking phenomena, has greatly strengthened hardness and the toughness of wear body, improves wearability, and simultaneous grinding efficiency is higher, material is ground more abundant.
Description
Technical field
The present invention relates to abrasive body technical field, relate in particular to a kind of capsule shape wear body.
Background technology
Cast-iron grinding ball is widely used in the industries such as cement building material, metallurgical mine, thermal power generation. Along with scienceTechnological progress and economic develop rapidly human society have entered a unprecedented new period, industrial developmentWith social progress, the high-abrasive material of traditional structure is proposed to new requirement, particularly, application large to use amountThe high-abrasive material that scope is wide, people expect to utilize minimum resource, minimum cost, manufacture out and haveThe advanced high-abrasive material of very outstanding combination property to be to meet the special demands of social progress for material, because ofThis, accelerate the renewal of abrading-ball product technology, replacement paces, and the higher substitute products of exploitation cost performance, becomeFor substantial responsibility and the task of top priority of high-abrasive material enterprise.
High chrome ball, due to its good wearability, is widely used, but its poor impact toughness, impactIts applicability. For the toughness and the anti-wear performance that make abrading-ball reach desirable cooperation, make up abrading-ball wearability and goodGood toughness not enough and must be through quench hot temper, but this method is unsatisfactory, common existenceAbrading-ball early deformation and Crushing Problem. Meanwhile, spheroid specific area minimum and surface configuration are level and smooth everywhere,Intensity is high, isotropism, is subject to frictional force minimum when motion, and therefore grinding efficiency is lower; And steel sectionTwo ends are plane, and its grinding effect to material is little.
Therefore, how to manufacture that a kind of wearability and toughness are taken into account, grinding efficiency is high, long service life wear-resistingBody is those skilled in the art assistant officer's problem to be solved.
Summary of the invention
For solving the technical problem existing in background technology, the present invention proposes a kind of capsule shape wear body, wear-resistingProperty is good, good toughness, grinding efficiency are high, long service life.
A kind of capsule shape wear body that the present invention proposes, by cylinder and the symmetrical hemisphere that is positioned at cylinder two endsBody is integrally formed, and described hemisphere bottom surface overlaps with described cylinder bottom surface, described cylinder bottom surface diameter withDescribed cylindrical height equates;
Described capsule shape wear body is made through the following steps:
S1, melting
Steel scrap, niobium powder, molybdenum powder, ferrochrome are placed in to medium-frequency induction furnace melting, make high chromium hot melt, its groupPoint comprise by weight percentage: carbon 1.6～1.8%, silicon 0.4～0.7%, manganese 0.3～0.6%, molybdenum 0.6～1.0%, chromium 10.0～10.5%, niobium 0.25～0.6%, sulfur content≤0.008%, phosphorus content≤0.008%,All the other are iron and inevitable impurity;
S2, cast
The high chromium hot melt of preparing in S1 is put to die casting, and molding after cooling, obtains foundry goods;
S3, heat temperature raising: described foundry goods is sent into and in heat-treatment furnace, is carried out temperature-gradient method, first with 20 DEG C/Minute be at the uniform velocity warming up to 320～350 DEG C, then continue to be at the uniform velocity warming up to 620～650 DEG C with 5 DEG C/min,Then continue to be at the uniform velocity warming up to 780～800 DEG C with 3 DEG C/min, then continue at the uniform velocity to heat up with 2 DEG C/minTo 920～950 DEG C, then continue to be at the uniform velocity warming up to 1050～1080 DEG C with 1 DEG C/min, insulation 90～95 minutes;
S4, quenching: the foundry goods obtaining through heat temperature raising is put into cooling 8～12 points of the pond of 84～86 DEG CClock;
S5, post bake: by quench after foundry goods be reentered into post bake to 105 in heat-treatment furnace～115℃；
S6, cold treatment: the foundry goods obtaining after post bake is at the uniform velocity cooled to-35～-25 DEG C with 10 DEG C/min,Then be warming up to room temperature;
S7, tempering: the foundry goods through cold treatment is put into tempering furnace, and furnace temperature is controlled at 260～350 DEG C,Tempering 5～7 hours, the air cooling of coming out of the stove, obtains capsule shape wear body;
Wherein, by S6 with S7 hockets twice or repeatedly.
Preferably, in S1, making the mass ratio of chromium and niobium in high chromium hot melt is 25-30:1.
In the present invention, the capsule shape wear body middle part proposing is cylinder, and cylinder two ends are half of symmetrySpheroid, cylinder axis is square to cross sectional shape. Described capsule shape wear body surface exists without crest line, eachSmooth transition between individual face, it is compared with steel ball, and surface area is larger, and the produced shearing that relatively moves is larger,Abrasive action to material is stronger, and has avoided the low shortcoming of steel section surface utilization rate, makes the material canGround more fully, grinding efficiency is higher; In addition, described capsule shape abrasive body adopts high chrome materialMake, in preparation process, mix appropriate niobium, and adopt at the uniform velocity heating mode heating of segmentation, quenchingAfter step, carry out post bake, repeat repeatedly cold treatment and tempering subsequently, ensure the mechanicalness of wear bodyWhen energy, reduce the generation of cracking phenomena, greatly strengthened hardness and the toughness of wear body, improve wear-resistingProperty, extend the service life of wear body.
Detailed description of the invention
Embodiment 1
A kind of capsule shape wear body in the present embodiment, by cylinder and the symmetrical hemisphere that is positioned at cylinder two endsBe integrally formed, described hemisphere bottom surface overlaps with described cylinder bottom surface, described cylinder bottom surface diameter and instituteStating cylindrical height equates;
Described capsule shape wear body is made through the following steps:
S1, melting
Steel scrap, niobium powder, molybdenum powder, ferrochrome are placed in to medium-frequency induction furnace melting, make high chromium hot melt, its groupPoint comprise by weight percentage: carbon 1.6%, silicon 0.7%, manganese 0.6%, molybdenum 1.0%, chromium 10.0%, niobium 0.4%,Sulfur content≤0.008%, phosphorus content≤0.008%, all the other are iron and inevitable impurity;
S2, cast
The high chromium hot melt of preparing in S1 is put to die casting, and molding after cooling, obtains foundry goods;
S3, heat temperature raising: described foundry goods is sent into and in heat-treatment furnace, is carried out temperature-gradient method, first with 20 DEG C/Minute be at the uniform velocity warming up to 320 DEG C, then continue to be at the uniform velocity warming up to 630 DEG C with 5 DEG C/min, then continue with 3 DEG C/ minute be at the uniform velocity warming up to 780 DEG C, then continue to be at the uniform velocity warming up to 940 DEG C with 2 DEG C/min, then continueAt the uniform velocity be warming up to 1070 DEG C with 1 DEG C/min, be incubated 90 minutes;
S4, quenching: the foundry goods obtaining through heat temperature raising is put into cooling 12 minutes of the pond of 84 DEG C;
S5, post bake: the foundry goods after quenching is reentered into post bake to 105 DEG C in heat-treatment furnace;
S6, cold treatment: the foundry goods obtaining after post bake is at the uniform velocity cooled to-35 DEG C with 10 DEG C/min, soAfter be warming up to room temperature;
S7, tempering: the foundry goods through cold treatment is put into tempering furnace, and furnace temperature is controlled at 260 DEG C, returnFire 7 hours, the air cooling of coming out of the stove, obtains capsule shape wear body;
S8, S6 and S7 are hocketed three times.
Embodiment 2
A kind of capsule shape wear body in the present embodiment, is made up of cylinder and the hemisphere that is positioned at cylinder two endsOne, this hemisphere bottom surface overlaps with cylinder bottom surface, this cylinder bottom surface diameter and described cylindrical heightDegree equates;
The capsule shape wear body that the present embodiment proposes is made through the following steps:
S1, melting
Steel scrap, niobium powder, molybdenum powder, ferrochrome are placed in to medium-frequency induction furnace melting, make high chromium hot melt, its groupDivide and comprise by weight percentage: carbon 1.7%, silicon 0.55%, manganese 0.45%, molybdenum 0.8%, chromium 10.2%, niobium0.38%, sulfur content≤0.008%, phosphorus content≤0.008%, all the other are iron and inevitable impurity;
S2, cast
The high chromium hot melt of preparing in S1 is put to die casting, and molding after cooling, obtains foundry goods;
S3, heat temperature raising: described foundry goods is sent into and in heat-treatment furnace, is carried out temperature-gradient method, first with 20 DEG C/Minute be at the uniform velocity warming up to 350 DEG C, then continue to be at the uniform velocity warming up to 620 DEG C with 5 DEG C/min, then continue with 3 DEG C/ minute be at the uniform velocity warming up to 800 DEG C, then continue to be at the uniform velocity warming up to 950 DEG C with 2 DEG C/min, then continueAt the uniform velocity be warming up to 1080 DEG C with 1 DEG C/min, be incubated 90 minutes;
S4, quenching: the foundry goods obtaining through heat temperature raising is put into cooling 8 minutes of the pond of 86 DEG C;
S5, post bake: the foundry goods after quenching is reentered into post bake to 115 DEG C in heat-treatment furnace;
S6, cold treatment: the foundry goods obtaining after post bake is at the uniform velocity cooled to-25 DEG C with 10 DEG C/min, soAfter be warming up to room temperature;
S7, tempering: the foundry goods through cold treatment is put into tempering furnace, and furnace temperature is controlled at 350 DEG C, returnFire 5 hours, the air cooling of coming out of the stove, obtains capsule shape wear body;
S8, S6 and S7 are hocketed four times.
Embodiment 3
A kind of capsule shape wear body in the present embodiment, is made up of cylinder and the hemisphere that is positioned at cylinder two endsOne, this hemisphere bottom surface overlaps with cylinder bottom surface, this cylinder bottom surface diameter and described cylindrical heightDegree equates;
The capsule shape wear body that the present embodiment proposes is made through the following steps:
S1, melting
Steel scrap, niobium powder, molybdenum powder, ferrochrome are placed in to medium-frequency induction furnace melting, make high chromium hot melt, its groupPoint comprise by weight percentage: carbon 1.8%, silicon 0.4%, manganese 0.3%, molybdenum 0.6%, chromium 10.5%, niobium 0.35%,Sulfur content≤0.008%, phosphorus content≤0.008%, all the other are iron and inevitable impurity;
S2, cast
The high chromium hot melt of preparing in S1 is put to die casting, and molding after cooling, obtains foundry goods;
S3, heat temperature raising: described foundry goods is sent into and in heat-treatment furnace, is carried out temperature-gradient method, first with 20 DEG C/Minute be at the uniform velocity warming up to 330 DEG C, then continue to be at the uniform velocity warming up to 650 DEG C with 5 DEG C/min, then continue with 3 DEG C/ minute be at the uniform velocity warming up to 790 DEG C, then continue to be at the uniform velocity warming up to 940 DEG C with 2 DEG C/min, then continue with1 DEG C/min is at the uniform velocity warming up to 1050 DEG C, is incubated 95 minutes;
S4, quenching: the foundry goods obtaining through heat temperature raising is put into cooling 10 minutes of the pond of 85 DEG C;
S5, post bake: the foundry goods after quenching is reentered into post bake to 110 DEG C in heat-treatment furnace;
S6, cold treatment: the foundry goods obtaining after post bake is at the uniform velocity cooled to-30 DEG C with 10 DEG C/min, soAfter be warming up to room temperature;
S7, tempering: the foundry goods through cold treatment is put into tempering furnace, and furnace temperature is controlled at 300 DEG C, returnFire 6 hours, the air cooling of coming out of the stove, obtains capsule shape wear body;
S8, S6 and S7 are hocketed twice.
In above-described embodiment 1～3, the capsule shape wear body middle part proposing is cylinder, cylinder two endsFor symmetrical hemisphere, cylinder axis is square to cross sectional shape. Described capsule shape wear body surface is without ribLine exist, smooth transition between each face, it is compared with steel ball, surface area is larger, relatively move produceShearing larger, stronger to the abrasive action of material, and avoided the low shortcoming of steel section surface utilization rate,Material can be ground more fully, and grinding efficiency is higher; In addition described capsule shape abrasive body,Adopt high chrome material to make, in preparation process, mix appropriate niobium, and adopt at the uniform velocity heating mode of segmentationHeat, after quenching step, carry out post bake, repeat repeatedly cold treatment and tempering subsequently, ensure resistance toWhen the mechanical performance of mill body, reduce the generation of cracking phenomena, greatly strengthened the hardness of wear body and toughProperty, improve wearability, extend the service life of wear body.
The above, be only preferably detailed description of the invention of the present invention, but not office of protection scope of the present inventionBe limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in, according to thisThe technical scheme of invention and inventive concept thereof are equal to replaces or changes, and all should be encompassed in protection of the present inventionWithin scope.
Claims (2)
1. a capsule shape wear body, is characterized in that, by cylinder and symmetrical half of the cylinder two ends that are positioned atSpheroid is integrally formed, and described hemisphere bottom surface overlaps with described cylinder bottom surface, described cylinder bottom surface diameterEquate with described cylindrical height;
Described capsule shape wear body is made through the following steps:
S1, melting
Steel scrap, niobium powder, molybdenum powder, ferrochrome are placed in to medium-frequency induction furnace melting, make high chromium hot melt, its groupPoint comprise by weight percentage: carbon 1.6～1.8%, silicon 0.4～0.7%, manganese 0.3～0.6%, molybdenum 0.6～1.0%, chromium 10.0～10.5%, niobium 0.25～0.6%, sulfur content≤0.008%, phosphorus content≤0.008%,All the other are iron and inevitable impurity;
S2, cast
The high chromium hot melt of preparing in S1 is put to die casting, and molding after cooling, obtains foundry goods;
S3, heat temperature raising: described foundry goods is sent into and in heat-treatment furnace, is carried out temperature-gradient method, first with 20 DEG C/Minute be at the uniform velocity warming up to 320～350 DEG C, then continue to be at the uniform velocity warming up to 620～650 DEG C with 5 DEG C/min,Then continue to be at the uniform velocity warming up to 780～800 DEG C with 3 DEG C/min, then continue at the uniform velocity to heat up with 2 DEG C/minTo 920～950 DEG C, then continue to be at the uniform velocity warming up to 1050～1080 DEG C with 1 DEG C/min, insulation 90～95 minutes;
S4, quenching: the foundry goods obtaining through heat temperature raising is put into cooling 8～12 points of the pond of 84～86 DEG CClock;
S5, post bake: by quench after foundry goods be reentered into post bake to 105 in heat-treatment furnace～115℃；
S6, cold treatment: the foundry goods obtaining after post bake is at the uniform velocity cooled to-35～-25 DEG C with 10 DEG C/min,Then be warming up to room temperature;
S7, tempering: the foundry goods through cold treatment is put into tempering furnace, and furnace temperature is controlled at 260～350 DEG C,Tempering 5～7 hours, the air cooling of coming out of the stove, obtains capsule shape wear body;
Wherein, S6 and S7 repeat to hocket repeatedly.
2. capsule shape wear body according to claim 1, is characterized in that, in S1, makes heightIn chromium hot melt, the mass ratio of chromium and niobium is 25-30:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410225920.3A CN104278203B (en) | 2014-05-24 | 2014-05-24 | A kind of capsule shape wear body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410225920.3A CN104278203B (en) | 2014-05-24 | 2014-05-24 | A kind of capsule shape wear body |
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| CN104278203A CN104278203A (en) | 2015-01-14 |
| CN104278203B true CN104278203B (en) | 2016-05-18 |
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| CN201410225920.3A Active CN104278203B (en) | 2014-05-24 | 2014-05-24 | A kind of capsule shape wear body |
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| CN113073182B (en) * | 2021-03-11 | 2022-08-23 | 南通大学 | Processing method for improving comprehensive performance of E690 high-strength steel for maritime work |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100150A (en) * | 1993-09-09 | 1995-03-15 | 株洲市机械工业研究所 | Impact fatigue-resistant wear-proof alloy cast iron |
| JP4893181B2 (en) * | 2006-09-20 | 2012-03-07 | Ｊｆｅスチール株式会社 | Casting for wear-resistant member for crusher / crusher and method for producing the same |
-
2014
- 2014-05-24 CN CN201410225920.3A patent/CN104278203B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100150A (en) * | 1993-09-09 | 1995-03-15 | 株洲市机械工业研究所 | Impact fatigue-resistant wear-proof alloy cast iron |
| JP4893181B2 (en) * | 2006-09-20 | 2012-03-07 | Ｊｆｅスチール株式会社 | Casting for wear-resistant member for crusher / crusher and method for producing the same |
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| CN104278203A (en) | 2015-01-14 |
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Effective date of registration: 20180928 Address after: 244000 Anhui Tongling suburb GUI Jia Hu Feng Ze Building Materials Technology Co., Ltd. Patentee after: TONGLING FENGZE BUILDING MATERIALS TECHNOLOGY Co.,Ltd. Address before: 242300 Wang Xi industrial park, Ningguo City, Xuancheng, Anhui Patentee before: NINGGUO SOUTHERN WEAR-RESISTANT MATERIALS Co.,Ltd. |
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Denomination of invention: A capsule shaped wear-resistant material Effective date of registration: 20230613 Granted publication date: 20160518 Pledgee: Huishang bank Tongling Beijing Road sub branch Pledgor: TONGLING FENGZE BUILDING MATERIALS TECHNOLOGY Co.,Ltd. Registration number: Y2023980043713 |