CN107177785A - The preparation method and device of bushing and bushing - Google Patents
The preparation method and device of bushing and bushing Download PDFInfo
- Publication number
- CN107177785A CN107177785A CN201610167865.6A CN201610167865A CN107177785A CN 107177785 A CN107177785 A CN 107177785A CN 201610167865 A CN201610167865 A CN 201610167865A CN 107177785 A CN107177785 A CN 107177785A
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- CN
- China
- Prior art keywords
- bushing
- molten steel
- nanometer
- steel
- mould
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/121—Use of special materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/14—Special methods of manufacture; Running-in
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/60—Ferrous alloys, e.g. steel alloys
- F16C2204/74—Ferrous alloys, e.g. steel alloys with manganese as the next major constituent
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/02—Shaping by casting
Abstract
The present invention provides a kind of bushing, cylindrical body is made by matrix material of austenitic manganese steel, a nanometer alterant is distributed with even dispersion in described matrix material, the nano material includes at least one of silicon nitride, titanium nitride, aluminium nitride, carborundum, titanium carbide, boron carbide, zirconium carbide, silicon boride, zirconium boride and rare earth oxide, and the content for stating nanometer alterant accounts for 0.01% the 0.30% of bushing gross weight.The present invention also provides the preparation method and a kind of preparation facilities of bushing of a kind of bushing.By nano material is filled into liquid potassium steel twice, crystal grain thinning greatly improves the metallographic structure of potassium steel and the mechanical property of bushing.By filling nano material, metal structure crystal grain is extremely refined, and molten steel is pure, and mechanical performance index is improved, and wearability more preferably, plays the modified purpose of optimization.
Description
Technical field
Field, more particularly to anti-wearing liner field are manufactured the present invention relates to wear part.
Background technology
Bushing is conventional wear-resisting machine components, and strong abrasion and impact is subjected in work, and service life is limited.To effectively improve the working life of bushing, suitable material and processing method should be selected according to its working condition.The impact in its work can be utilized using austenitic manganese steel material, the shock peening effect of austenitic manganese steel is given full play to.But the cooling procedure of liquid austenitic manganese steel belongs to intermediate setup mode, between Layer by layer solidification and mushy freezing, autstenitic grain size is caused to be only capable of reaching 0-2 grades, coarse grains cause the mechanical property of potassium steel not high enough.It is additionally, since potassium steel composition of raw material complicated, impurity content is high, easily forms stomata in smelting process and the defect such as be mingled with, thus has influence on the performance of potassium steel performance.
The content of the invention
The technical problems to be solved by the invention are that there is provided a kind of bushing with senior wear resistance properties.
Another technical problem to be solved of the present invention is there is provided a kind of preparation method of bushing, to obtain the bushing of tool high-compactness.
The another technical problem to be solved of the present invention is there is provided a kind of preparation facilities of bushing, so that the senior anti-wearing liner of tool is made.
To solve above-mentioned technical problem, present invention firstly provides a kind of bushing, it is characterized in that, using austenitic manganese steel as matrix material, nano modifier is distributed with even dispersion in described matrix material, the nano material includes at least one of silicon nitride, titanium nitride, aluminium nitride, carborundum, titanium carbide, boron carbide, zirconium carbide, silicon boride, zirconium boride and rare earth oxide, and the content for stating nano material accounts for the 0.01%-0.30% of bushing gross weight.
Further, the bushing mid-manganese alloy content accounts for the 6-18% of bushing gross weight.
Further, the bushing is tubular.
The present invention also provides a kind of preparation method of bushing, including：
Baking step：Heating, drying is carried out by raw material of austenitic manganese steel, to remove the moisture of raw material；
Smelting step：Raw material after drying are smelted, and pass through slag making and the impurity of slagging-off reduction molten metal；
Purifying step：After the molten steel obtained arrival tapping temperature is smelted, molten steel is transferred to progress nanometer in the casting ladle of built-in liquid nano alterant and gone bad, with further crystal grain thinning, cleaning molten steel, nano modifier is reached Dispersed precipitate in molten steel；
Centrifugal casting step：Molten steel injection after purification is carried out realizing that nanometer goes bad and crystal grain thinning again in centrifugal casting, casting process in the centrifugal casting mould that inwall is coated with nano material in advance；And
Cooling step：Bushing is taken out after cooling.
The present invention also provides a kind of preparation facilities of bushing, including be connected with horizontal or vertical centrifugal-casting machine base, be fixed on the base and baffle plate on the outside of the outer pad of the mould with the base rotation, the interior pad positioned at the mould inside, the outer pad positioned at the mould outer end, gear, the fastening frame that is connected with the mould and the fastening frame and the fixed block being located on the outside of the baffle plate can be pressed into.
After adopting the above technical scheme, the present invention at least has the advantages that：It is filled into by by nano material in liquid potassium steel, crystal grain thinning, greatly improves the metallographic structure of potassium steel and the mechanical property of bushing.By filling nano material, metal structure crystal grain is extremely refined, and molten steel is pure, and mechanical performance index is improved, and wearability more preferably, plays the modified purpose of optimization.
Brief description of the drawings
Fig. 1 is the sectional view of the preparation facilities of bushing of the present invention and bushing.
Fig. 2 is the FB(flow block) of the preparation method of bushing of the present invention.
Fig. 3 is the metallograph for the bushing for not adding nano modifier.
Fig. 4 is the metallograph for the bushing that the present invention adds nano modifier.
Fig. 5 is the metallograph of another bushing for adding nano modifier of the present invention.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can be combined with each other, and the application is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of bushing 4 of the invention, even dispersion in cylindrical body, described matrix material is made by matrix material of austenitic manganese steel nano modifier is distributed with.Wherein, the nano material includes at least one of silicon nitride, titanium nitride, aluminium nitride, carborundum, titanium carbide, boron carbide, zirconium carbide, silicon boride, zirconium boride and rare earth oxide, and the content for stating nano material accounts for the 0.01%-0.30% of bushing gross weight；The mid-manganese alloy content of bushing 4 accounts for the 6-18% of the gross weight of bushing 4.
As shown in Fig. 2 a kind of preparation method of bushing of the invention, comprises the following steps：
Baking step：Heating, drying is carried out by raw material of austenitic manganese steel, to remove the moisture of raw material；
Smelting step：Raw material after drying are smelted, and pass through slag making and the impurity of slagging-off reduction molten metal；
Purifying step：After the molten steel obtained arrival tapping temperature is smelted, molten steel is transferred to progress nanometer in the casting ladle of built-in liquid nano alterant and gone bad, with further crystal grain thinning, cleaning molten steel, nano modifier is reached Dispersed precipitate in molten steel；
Centrifugal casting step：Molten steel injection after purification is carried out realizing that nanometer goes bad and crystal grain thinning again in centrifugal casting, casting process in the centrifugal casting mould that inwall is coated with nano material in advance；
Cooling step：Bushing is taken out after cooling；And
The tough step of water：Water-tenacity treatment is carried out to the bushing taken out after cooling.
As shown in Figure 1, the preparation facilities of bushing of the present invention, including be connected with horizontal or vertical centrifugal-casting machine base 1, be fixed on the mould 3 of base, the interior pad 2 inside mould 3, outer pad 7 positioned at the outer end of mould 3, the baffle plate 8 kept off on the outside of pad outside, the fastening frame 6 that is connected with mould, the fixed block 5 for being pressed into fastening frame, and the chute stretched into through baffle plate 8 and outer pad 7 in mould 3.
Base 1, mould 3 and fastening frame 6 are connected by welding manner, according to the size and material of bushing 4, set centrifuge speed, open horizontal centrifugal casting machine, before the molten metal of melting is poured into, nano material is added inside the die cavity of mould 3, cast removes chute after terminating, centrifugal casting machine is closed after supercooling, bushing 4. is taken out
Nano material is added in mould, can be sufficiently stirred for blending with molten steel formation, so as to penetrate into the inside of molten steel, the temperature of this process is exactly in the crystallization and freezing phase of potassium steel, and temperature is relatively low, nanometer solidifies at once once blending, almost not burning.Nanometer is added in smelting furnace, all occurs the problems such as scaling loss is serious, stirring is inadequate in steel ladle on the contrary, once testing, causes nanometer effect bad.
The present invention casts potassium steel part using nano material, can adjust the kind and dosage of nano material, meet the material capability requirement of different bushings.In the present embodiment, the size range of bushing is：External diameter 30mm-600mm, internal diameter 20mm-500mm, length 30mm-1000mm.Material standard is GB/T5680-2010, and Metallographic standard is GB/T13925-2010.
During by adding a certain amount of titanium nitride TiN and carborundum SiC nano modifiers, the impact absorbing power of bushing is improved.Table 1 is the hardness determination value and impact absorbing power value of bushing when being not added with and be separately added into 0.01%-0.10%, 0.02%-0.20% titanium carbide TiC, carborundum SiC, titanium nitride TiN.
Influence of the 1 nanometer of alterant of table to bushing hardness and impact absorbing power
Table 2 is shown in tension test, the yield strength of bushing is improved when adding a certain amount of titanium carbide TiC, carborundum SiC, titanium nitride TiN, tensile strength is improved, elongation after fracture and the contraction percentage of area are improved to some extent, and wear rate is then accordingly reduced.
Influence of the nano modifier of table 2 to bushing initial hardness
The invention belongs to centrifugal casting process, it is filled into by by nano material in liquid potassium steel, crystal grain thinning, greatly improves the metallographic structure of potassium steel and the mechanical property of bushing.Fig. 3 to Fig. 5 is refer to, by filling nano material twice, metal structure crystal grain is extremely refined, and molten steel is pure, and mechanical performance index is improved, wearability more preferably, plays the modified purpose of optimization.By controlling liquid metal heating-up temperature, firing rate and cooling velocity, the environment of a uniform free diffusion is created to nano modifier powder, to greatest extent as the initial nucleus of austenite crystal, the purpose of crystal grain thinning is reached.Crystal grain thinning result reaches more than 5 grades, accordingly adds tissue crystal boundary deformation resistance, improves crystal grain dislocation resistance, Tensile strength is improved, in the environment of impact wear, and austenite structure matrix deformation energy is improved, part top layer is drastically hardened, so as to reach tough wear-resisting.
The rotten advantage of secondary nanometer：One time nano material addition is less, cooperate with conventional alterant, add in steel ladle, catharsis is played to molten steel, emphasis deoxygenation, degassing, desulfurization, provide good condition, if molten steel is not pure for second nanometer of addition, substantial amounts of oxide, sulfide will dilute nano material, destroy effect of nano material.Second of nano material is the part played a decisive role to molten steel crystallization effect, and addition is accurate, there is strict demand to temperature and mould rotating speed, and nanometer obtains that the higher tissue grain size of rate is higher, and nano material effect just can fully demonstrate out.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, it is appreciated that a variety of change, modification, replacement and modification can be carried out to these embodiments without departing from the principles and spirit of the present invention, the scope of the present invention is limited by appended claims and its equivalency range.
Claims (6)
1. a kind of bushing, it is characterised in that using austenitic manganese steel as matrix material, in described matrix material
Even Dispersed precipitate has a nanometer alterant, and the nanometer alterant includes silicon nitride, titanium nitride, aluminium nitride, carbon
At least one of SiClx, titanium carbide, boron carbide, zirconium carbide, silicon boride, zirconium boride and rare earth oxide,
The content for stating nano material accounts for the 0.01%-0.30% of bushing gross weight.
2. bushing as claimed in claim 1, it is characterised in that the bushing mid-manganese alloy content accounts for described
The 6-18% of bushing.
3. bushing as claimed in claim 1 or 2, it is characterised in that the bushing is cylindrical in shape.
4. a kind of preparation method of bushing as described in claim any one of 1-3, including：
Baking step：Heating, drying is carried out by raw material of austenitic manganese steel, to remove the moisture of raw material；
Smelting step：Raw material after drying are smelted, and molten metal is reduced by slag making and slagging-off
Impurity；
Purifying step：After the molten steel obtained arrival tapping temperature is smelted, molten steel is transferred to built-in liquid nano
Nanometer is carried out in the casting ladle of alterant to go bad, and with further crystal grain thinning, cleaning molten steel, makes a nanometer alterant
Dispersed precipitate is reached in molten steel；
Centrifugal casting step：Molten steel injection after purification is coated with to the centrifugal casting of nano material in inwall in advance
Realize that nanometer goes bad and crystal grain thinning again in modeling tool in centrifugal casting, casting process；And
Cooling step：Bushing is taken out after cooling.
5. the preparation method of bushing as claimed in claim 4, it is characterised in that also walked including water-tenacity treatment
Suddenly：Water-tenacity treatment is carried out to the bushing taken out after cooling.
6. a kind of preparation facilities of bushing as described in claim any one of 1-3, including with it is horizontal or vertical
The base of centrifugal casting machine connection, it is fixed on the base and can be with the mould of the base rotation, positioned at institute
State baffle plate on the outside of the outer pad of the interior pad of mould inside, the outer pad positioned at the mould outer end, gear, with
Fastening frame and be pressed into the fastening frame and the fixed block on the outside of the baffle plate that the mould is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610167865.6A CN107177785A (en) | 2016-03-13 | 2016-03-13 | The preparation method and device of bushing and bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610167865.6A CN107177785A (en) | 2016-03-13 | 2016-03-13 | The preparation method and device of bushing and bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107177785A true CN107177785A (en) | 2017-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610167865.6A Pending CN107177785A (en) | 2016-03-13 | 2016-03-13 | The preparation method and device of bushing and bushing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157975A (en) * | 2019-06-28 | 2019-08-23 | 含山县兴达球墨铸铁厂 | A kind of preparation method of high-strength thin-walled gray iron casting |
| CN110358978A (en) * | 2019-08-24 | 2019-10-22 | 湖南长重机器股份有限公司 | A kind of bucket wheel machine hopper wear-resistant liner and preparation method thereof |
| CN112692259A (en) * | 2020-12-08 | 2021-04-23 | 山东天物成型科技有限公司 | Production process of super-wear-resistant bimetal hob ring |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764872A (en) * | 2012-08-01 | 2012-11-07 | 海盐鼎盛机械有限公司 | Horizontal centrifugal casting machine |
| CN203917850U (en) * | 2014-05-23 | 2014-11-05 | 汤仁秀 | A kind of improved centrifugal casting machine |
-
2016
- 2016-03-13 CN CN201610167865.6A patent/CN107177785A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764872A (en) * | 2012-08-01 | 2012-11-07 | 海盐鼎盛机械有限公司 | Horizontal centrifugal casting machine |
| CN203917850U (en) * | 2014-05-23 | 2014-11-05 | 汤仁秀 | A kind of improved centrifugal casting machine |
Non-Patent Citations (1)
| Title |
|---|
| NND7FF8S: "纳米变质技术在离心铸造高锰钢衬套上的应用", 《豆丁网》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157975A (en) * | 2019-06-28 | 2019-08-23 | 含山县兴达球墨铸铁厂 | A kind of preparation method of high-strength thin-walled gray iron casting |
| CN110358978A (en) * | 2019-08-24 | 2019-10-22 | 湖南长重机器股份有限公司 | A kind of bucket wheel machine hopper wear-resistant liner and preparation method thereof |
| WO2021035898A1 (en) * | 2019-08-24 | 2021-03-04 | 湖南长重机器股份有限公司 | Wear-resistant lining plate of bucket wheel machine hopper, and preparation method therefor |
| CN112692259A (en) * | 2020-12-08 | 2021-04-23 | 山东天物成型科技有限公司 | Production process of super-wear-resistant bimetal hob ring |
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Application publication date: 20170919 |