CN102173754A - Ceramic cutting tool for cleaning and integration processing of stainless steel 304 material and preparation method thereof - Google Patents
Ceramic cutting tool for cleaning and integration processing of stainless steel 304 material and preparation method thereof Download PDFInfo
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- CN102173754A CN102173754A CN 201110022802 CN201110022802A CN102173754A CN 102173754 A CN102173754 A CN 102173754A CN 201110022802 CN201110022802 CN 201110022802 CN 201110022802 A CN201110022802 A CN 201110022802A CN 102173754 A CN102173754 A CN 102173754A
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- cutting tool
- stainless steel
- magnesium oxide
- aluminum oxide
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- 239000000463 material Substances 0.000 title claims abstract description 24
- 239000000919 ceramic Substances 0.000 title claims abstract description 21
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 20
- 239000010935 stainless steel Substances 0.000 title claims abstract description 20
- 238000012545 processing Methods 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000005520 cutting process Methods 0.000 title abstract description 20
- 238000004140 cleaning Methods 0.000 title abstract description 5
- 230000010354 integration Effects 0.000 title abstract 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 9
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000005245 sintering Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 8
- 229910001651 emery Inorganic materials 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000000498 ball milling Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 238000000462 isostatic pressing Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- 238000009461 vacuum packaging Methods 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000003754 machining Methods 0.000 abstract description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000003026 anti-oxygenic effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
The invention belongs to the technical field of the precision/ultra-precision machining of difficult-to-process materials and discloses a ceramic cutting tool for the cleaning and integration processing of a stainless steel 304 material and a preparation method thereof. The invention is characterized in that the formula of the cutting tool adopts alumina and magnesium oxide; and a new alumina-based ceramic cutting tool is prepared by selecting reasonable technologies such as pressing, sintering and machining. As the ceramic cutting tool has the advantages of pure components, good high-temperature chemical stability, high hardness, low permeability and the like, when the difficult-to-process stainless steel 304 material is machined, the cleaning, integration, integrity and abrasion resistance of the cutting tool are much better than those of the traditional cutting tool.
Description
Technical field
The invention belongs to the accurate ultra processing technique field of difficult-to-machine material, particularly a kind of sintex and preparation method who is used for clean integralization processing stainless steel 304 materials.
Background technology
Nuclear energy is one of important cleaning, safety, reliable energy, also is one of the most potential energy in future, is widely used in departments such as aerospace, national defence, electric power just step by step.The nuclear main pump is Nuclear power plants " heart ", is the important component part that nuclear power is built, and is the domesticize great equipment of last difficulty maximum of nuclear power technology, also is that last relies on the technology and equipment of external import fully in the Nuclear power plants equipment.Although China introduces the nuclear power equipment of France etc. since the beginning of the eighties in last century, but up to now, China still can not autonomous design makes the critical equipment of large nuclear power station, particularly examine main pump manufacturing, equipment fully by state monopolies such as U.S., method, Russia, aspect the strict control of technology, the core technology that China manufactures and designs at the nuclear main pump almost is barren.
The nuclear main pump of overlength usage is operated under high radioactivity, high temperature, the high pressure extreme environment, the pressure-bearing boundary that component (material mostly is stainless steel 304) such as nuclear main pump pump case, rotor assembly, bearing, wear ring, shield member constitute, be in the grand miniflow field of special working medium, bear high dynamic pressure load and long-term erosive wear and corrosive nature, for guaranteeing the stability of key components and parts usage life-span and system, when component usage performance is satisfied in requirement, avoid the physico-chemical property and the flow characteristics of working medium are produced detrimentally affect; The overcurrent component possessed meet the high surface cleanliness (preventing the pollution of ferrite, F, Cl, Ni, Cr etc.) and the high surface integrity of nuclear environment usage requirement, promptly clean integralization manufacturing.The clean integralization manufacturing of nuclear main pump key components and parts is one of core technology of nuclear main pump manufacturing, domestic its clean integralization manufacturing process difficult problem of not resolving yet.
Sintex is owing to the characteristics such as high strength, high creep resistance, high antioxygenic property and stability at elevated temperature that have under high rigidity, the high temperature gain great popularity in novel hi-tech material, accurate ultra processing, and by selecting rational component, sintering process etc., can prepare that compactness is good, composition is pure, intensity and toughness cutter preferably, be one of desirable cutter of cleaningization manufacturing.At present sintex mainly contains alumina base and nitride silicon based two types.Wherein, silicon nitride base ceramic cutting tool reacts with iron under hot conditions, oxidation easily, and to the tool surface infiltration, in contrast to this, aluminum oxide base ceramics cutting tool has good high-temperature stability, is more suitable for the cleaningization manufacturing.But existing aluminum oxide base ceramics cutting tool adopts metallic bond mostly, still might cause element pollutions such as Ni, Cr in cutting process.
Summary of the invention
The technical problem to be solved in the present invention is to have developed the not novel aluminum oxide base ceramics cutting tool of containing metal wedding agent, solves the clean integralization processing difficult problem of stainless steel 304 materials.
To achieve these goals, technical scheme of the present invention is:
A kind of sintex that is used for clean integralization processing stainless steel 304 materials is characterized in that it comprises feed composition, compacting, sintering, mechanical workout, and the shared mass percent of its raw material is:
Aluminum oxide: 99.5%-99.9%, preferred 99.8%;
Magnesium oxide: 0.5%-0.1%, preferred 0.2%;
Each raw materials quality per-cent sum is 100%;
Described each component purity＞99.99%; Size＜4 μ m.
The preparation method of above-mentioned sintex comprises the steps:
1) die sinking tool;
2) preparation of ceramics powder: with massfraction is 99.8% aluminum oxide and 0.2% magnesium oxide thorough mixing, carries out ball milling and choosing grain.The main effect of this process is further to reduce granularity, and it is full and uniform that multiple material is mixed;
3) compacting: carry out dry-pressing earlier, pressure is 40MPa; Wait static pressure to handle with putting into isostatic pressing machine after the ceramic vacuum packing that suppresses then, pressure keeps 180MPa, pressurize 5min; Dry-pressing can adopt four-column hydraulic press to carry out.
4) sintering: the above-mentioned pottery that suppresses is carried out high temperature sintering, be warming up to 1650 ℃, insulation 120min with the speed of 1 ℃/min; Speed with 3 ℃/min is cooled to room temperature then, blow-on.
5) mechanical workout: square blade (15.87 * 15.87 * 7.94mm that behind oversintering, obtains
3), carry out certain mechanical workout, arc radius will reach 0.8mm.Mechanical workout all adopts accurate grinding to finish, and emery wheel is a diamond-resin grinding wheel, adopts the double-side grinding mode.Small-sized cutter for arcuation, employing sharp knife cambered surface makes progress, the axial mode of workpiece is carried out grinding, two emery wheels axially parallel with workpiece, axially can seesawing of emery wheel, be loaded with workpiece anchor clamps can before and after, move up and down once put the first edge on a knife or a pair of scissors (mainly being to rely on the mode of profiling once to finish to put the first edge on a knife or a pair of scissors).The effect of this process is to prevent that sintex toughness is relatively poor, causes causing in the cutting process destructions such as tipping.
Effect of the present invention and benefit are: when the present invention uses stainless steel 304 materials at clean integralization processing nuclear main pump key components and parts, shown superiority than conventional tool, sintex.When DRY CUTTING stainless steel 304 materials, than traditional inserted tool (YG8), ceramic tool (Al
2O
3, Ti (C, N) base) is demonstrating certain superiority aspect the cleaning processing, especially aspect the pollution that reduces Ni, Cr element certain advantage is being arranged; In dry type, at a high speed, when essence cuts stainless steel 304 materials, than traditional inserted tool (YG8), demonstrating certain superiority aspect the integrity processing, surface roughness Ra can reduce about 26%, and the finished surface adhesion is less, tooth mark are clear evenly; In dry type, at a high speed, when essence cuts stainless steel 304 materials,, demonstrating certain superiority aspect the cutter wear resistance, and the smear metal color is more shallow than traditional inserted tool (YG8), cutting force, machining deformation are less.
Subordinate list and figure explanation
Fig. 1 is the workpiece surface appearance that adopts inserted tool processing to obtain.
Fig. 2 is the workpiece surface appearance that adopts the processing of self-control sintex to obtain.
Embodiment
Be described in detail specific embodiments of the invention below in conjunction with technical scheme and subordinate list, figure.
Employed aluminum oxide, magnesium oxide etc. are chemical reagent commonly used in the method for the present invention.Used equipment is known device commonly used in the method for the present invention.
Embodiment:
The clean integralization machining experiment of stainless steel 304 materials comprises two portions: analytical test of finished surface cleanliness factor and the experiment of finished surface integrity analysis.
Adopt new ceramics cutter and two kinds of tradition contrasts cutter---inserted tool (YG8), ceramic tool (Al of technique scheme preparation
2O
3, Ti (C, N) base), DRY CUTTING stainless steel 304 materials carry out check and analysis to the cleanliness factor of finished surface.
Test-results draws, adopt homemade new ceramics Tool in Cutting processing stainless steel 304 materials, can obtain finished surface, show that homemade new ceramics cutter is having certain advantage aspect the pollution that reduces elements such as Ni, Cr than traditional inserted tool and cleanizationer of ceramic tool; In addition, homemade new ceramics cutter helps improving the erosion resistance of stainless steel 304 materials except aspect the pollution that reduces Si, Ti, other elements such as Co, C certain advantage being arranged also.
Adopt the new ceramics cutter of technique scheme preparation and traditional inserted tool (YG8), at different cutting parameters (V, f, a
p) under the condition, DRY CUTTING stainless steel 304 materials carry out check and analysis to the roughness and the surface topography of finished surface.
Table 1 is to adopt two kinds of cutters to process the workpiece surface roughness value that obtains under the different machining parameters condition.
Table 1
As can be seen from the table: at depth of cut a
pUnder the less situation of amount of feed f, during high speed cutting stainless steel 3 04 materials, compare with traditional inserted tool, when adopting homemade new ceramics cutter, machined surface roughness Ra can be reduced about 26%.Fig. 1 and Fig. 2 are respectively the workpiece surface appearance that adopts inserted tool and the processing of self-control sintex to obtain.As can be seen from the figure: adopt the integrity on self-control sintex processing work surface better, adhere to less, tooth mark are clear and even.
Claims (3)
1. sintex is used in the clean integralization processing of stainless steel 304 materials, it is characterized in that its feed composition comprises aluminum oxide and magnesium oxide, and the shared mass percent of its raw material is:
Aluminum oxide: 99.5%-99.9%; Magnesium oxide: 0.5%-0.1%;
Each raw materials quality per-cent sum is 100%;
Described each component purity＞99.99%; Size＜4 μ m.
2. the clean integralization processing of a kind of stainless steel 304 materials according to claim 1 uses sintex, its feature to be that also its feed composition comprises aluminum oxide and magnesium oxide, and the shared mass percent of its raw material is:
Aluminum oxide: 99.8%; Magnesium oxide: 0.2%;
Each raw materials quality per-cent sum is 100%; Described each component purity＞99.99%; Size＜4 μ m.
3. the preparation method of claim 1 or 2 described sintexes is characterized in that comprising the steps:
1) die sinking tool;
2) preparation of ceramics powder: with aluminum oxide and magnesium oxide thorough mixing, carry out ball milling and choosing grain by the feed composition in the claim 1 or 2;
3) compacting: carry out dry-pressing earlier, pressure is 40MPa; Wait static pressure then, will put into isostatic pressing machine after the ceramic vacuum packing that suppress, pressure keeps 180MPa, pressurize 5min;
4) sintering: the above-mentioned pottery that suppresses is carried out high temperature sintering, be warming up to 1650 ℃, insulation 120min with the speed of 1 ℃/min; Speed with 3 ℃/min is cooled to room temperature then, blow-on.
5) mechanical workout: the square blade that behind oversintering, obtains, arc radius reaches 0.8mm after the mechanical workout; Mechanical workout all adopts accurate grinding to finish, and emery wheel is a diamond-resin grinding wheel, adopts the double-side grinding mode; For the small-sized cutter of arcuation, adopt the sharp knife cambered surface upwards, the axial mode of workpiece carries out grinding, two emery wheels axially parallel with workpiece, axially the seesawing of emery wheel, be loaded with workpiece the anchor clamps front and back, move up and down, once put the first edge on a knife or a pair of scissors.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110022802 CN102173754A (en) | 2011-01-20 | 2011-01-20 | Ceramic cutting tool for cleaning and integration processing of stainless steel 304 material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110022802 CN102173754A (en) | 2011-01-20 | 2011-01-20 | Ceramic cutting tool for cleaning and integration processing of stainless steel 304 material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080674A (en) * | 2014-05-23 | 2015-11-25 | 住友重机械环境工程株式会社 | Double-shaft differential type crusher |
| CN110118695A (en) * | 2019-05-23 | 2019-08-13 | 南京工程学院 | A kind of constant stress load hydrogen permeability experimental facility and test method |
-
2011
- 2011-01-20 CN CN 201110022802 patent/CN102173754A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 《陶瓷刀具切削加工》 19880731 艾兴 等 陶瓷刀具切削加工 机械工业出版社 第31,45,71页 1-3 , * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080674A (en) * | 2014-05-23 | 2015-11-25 | 住友重机械环境工程株式会社 | Double-shaft differential type crusher |
| CN105080674B (en) * | 2014-05-23 | 2018-10-09 | 住友重机械环境工程株式会社 | Dual-axis differential formula crusher |
| CN110118695A (en) * | 2019-05-23 | 2019-08-13 | 南京工程学院 | A kind of constant stress load hydrogen permeability experimental facility and test method |
| CN110118695B (en) * | 2019-05-23 | 2021-11-30 | 南京工程学院 | Constant stress loading hydrogen permeation experimental device and method |
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Application publication date: 20110907 |