EP0014655B1 - Procédé de fabrication de corps broyants en alliage ferreux - Google Patents
Procédé de fabrication de corps broyants en alliage ferreux Download PDFInfo
- Publication number
- EP0014655B1 EP0014655B1 EP80400172A EP80400172A EP0014655B1 EP 0014655 B1 EP0014655 B1 EP 0014655B1 EP 80400172 A EP80400172 A EP 80400172A EP 80400172 A EP80400172 A EP 80400172A EP 0014655 B1 EP0014655 B1 EP 0014655B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaped section
- bodies
- section
- solidification
- shaping
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000000227 grinding Methods 0.000 title description 44
- 229910000640 Fe alloy Inorganic materials 0.000 title description 3
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 238000009749 continuous casting Methods 0.000 claims abstract description 10
- 238000007711 solidification Methods 0.000 claims abstract description 10
- 230000008023 solidification Effects 0.000 claims abstract description 10
- 238000007493 shaping process Methods 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 238000002425 crystallisation Methods 0.000 claims abstract description 4
- 230000008025 crystallization Effects 0.000 claims abstract description 4
- 230000007717 exclusion Effects 0.000 claims abstract description 3
- 238000007669 thermal treatment Methods 0.000 claims abstract 5
- 239000000203 mixture Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910001566 austenite Inorganic materials 0.000 claims description 2
- 238000000137 annealing Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 13
- 239000011651 chromium Substances 0.000 description 7
- 208000031968 Cadaver Diseases 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 6
- 238000005242 forging Methods 0.000 description 5
- 150000001247 metal acetylides Chemical class 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910001037 White iron Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- QFGIVKNKFPCKAW-UHFFFAOYSA-N [Mn].[C] Chemical compound [Mn].[C] QFGIVKNKFPCKAW-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000010112 shell-mould casting Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/20—Disintegrating members
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
Definitions
- the invention relates to a method of manufacturing grinding bodies made of ferrous alloy containing at least 1% by weight of carbon, with axial symmetry or with a substantially constant section.
- the invention also relates to the new grinding bodies made of ferrous alloys prepared by this process.
- cylindrical grinding bodies made of ferrous alloys. These are usually made either by molding, from various ferrous compositions (carbon-manganese steels, cast iron with variable chromium content, etc.), or from a ferrous alloy, laminated and cut, with , in this case, a carbon content limited to 1% by weight.
- a cylindrical grinding body if it is molded in sand, has a fairly coarse structure, due to the slow cooling associated with this technique. On the other hand, it forces a lot of metal to be melted, from 1.3 to 1.5 times more than the weight of the grinding bodies obtained. It has also been proposed to manufacture such bodies by shell molding; this solution gives a satisfactory structure, but its manufacturing process is discontinuous. In addition, it also forces a quantity of metal greater than the weight of the cylindrical bodies to be melted and it requires complex multiple tools and a protective coating.
- the cylindrical grinding body is made from continuously rolled profiles or bars, its percentage of carbon cannot exceed 1%, without requiring costly reheating precautions, limited reduction rate, rolling speed slow, etc ...
- the Applicant has proposed a process for manufacturing grinding bodies forged from white cast iron with a high chromium content. This process includes cutting a bar into pieces, heating these pieces to a first temperature and forging these pieces to a second temperature, in order to refine and break the grains of the metal. These relatively complex operations can be followed by cooling and additional heat treatment. The aim is to obtain high quality products intended to be used for grinding under low abrasion conditions and in a dry environment.
- FR-A-2 174 969 relates to the production of high tenacity grinding balls, in which fine cementite is dispersed throughout the ball in a concentric, spherical and uniform manner.
- a hypoeutectic cast iron is cast in the form of a bar, which is then subjected by forging to a hot plastic deformation, which destroys the crystal lattice coming from casting.
- FR-A-2405749 which belongs to the Applicant, also relates to forged grinding bodies prepared by heating a bar of white cast iron to a first temperature, cutting into pieces of this bar, hot, in the plastic state , heating these plots to a second temperature and forging said plots at this second temperature under conditions suitable for causing the appearance of perlite.
- the invention aims to remedy these drawbacks by proposing grinding bodies with high hardness, intended for use in a very abrasive medium and with high humidity, which can be manufactured by an inexpensive process.
- the invention also aims to propose a method which makes it possible to produce such grinding bodies continuously, with very little loss of metal and with limited energy consumption.
- the subject of the invention is a process for manufacturing grinding bodies made of ferrous alloy containing at least 1% by weight of carbon, with axial symmetry or with constant section, this process comprising shaping the grinding bodies and a heat treatment, the shaping comprising an operation of solidification in an open ingot mold of a profile resulting from a continuous casting of said alloy, followed by a division of said profile into pieces and the heat treatment being able to give the metal a structure austenitic or martensitic, this process being characterized in that the operation of dividing the profile into pieces constitutes the final operation of shaping the grinding bodies to the exclusion of any plastic deformation thereof, so as to preserve to said bodies the structure with radial crystallization resulting directly from the continuous casting of the profile.
- the subject of the invention is also grinding bodies of ferrous alloy, with axial symmetry, or with constant section, having a fine structure with substantially constant radial crystallization over their entire length and consisting of an austenitic or martensitic solution comprising carbides of the type M 7 C S and / or M 3 C, obtained by implementing this process.
- the Applicant has, in fact, established that, due to the rapid cooling inherent in the process for producing a profile or a bar of a ferrous alloy produced in a continuous casting installation, the metal has a fine structure with increasing grain from the external surface of the bar towards the central axis thereof, that is to say precisely the type of structure desirable for grinding bodies, in order to increase their resistance to abrasion.
- the starting metal profile has by itself an axial symmetry and a constant section perpendicular to its axis, that is to say the type of profile suitable for grinding bodies, which avoids having to shape these.
- the heat treatment intended to give the metal the desired austenitic or martensitic structure can be applied to the hot bar, rough solidification, prior to the division of the profile into pieces, without interrupting the continuous manufacturing process. We will return in more detail to the energy savings thus achieved, in the remainder of this description.
- a preferred form of implementation of the method according to the invention therefore consists in applying the desired heat treatment to the metal profile emerging directly from the continuous solidification assembly of the metal.
- the division of the profile into pieces of the desired length for the grinding bodies can be carried out by any means known in the art (cutting, breaking, cutting, etc.).
- the grinding bodies obtained by the implementation of the method described above constitute another object of the invention.
- These grinding bodies with axial symmetry or with constant section (circular, square, hexagonal, octagonal or other), have a fine structure and are composed of a solid austenitic or martensitic solution containing secondary or primary or eutectic carbides of type M 7 C 3 or M a C.
- said grinding bodies are cylindrical and contain, in% by weight, 1 to 4% of carbon, 0 to 40% of chromium, 0 to 2% of molybdenum, 0.1 2.5% silicon, 0.1-15% manganese, 0-5% vanadium, 0-5% copper and 0-1% magnesium.
- These grinding substances can also contain elements such as tungsten (0 to 5%), nickel (0 to 5%), boron (0 to 2%), niobium (0 to 2%), tantalum, zirconium , cerium or bismuth.
- These grinding bodies will have a length of the order of 0.5 to 3 times the average diameter of their section. In other words, the original bar will be cut into pieces of length between 0.5 and 3 times its diameter. It will be noted in this connection that the loss of metal during the manufacturing process is infinite, and of the order of less than 2% in practice, including fusion, which constitutes another notable advantage of the process according to the invention.
- This example relates to the manufacture of cylindrical grinding bodies with an austenitic structure, by cooling with the aid of air blown from a hot bar, gross of manufacture.
- This bar leaves the device for continuously solidifying the metal at a temperature of 1100 ° C. and is immediately cooled by passing through a series of rings and air blowing boxes, which lower its temperature to about 100 to 200 ° C.
- the bar is then cut into pieces at this temperature.
- the micrographic structure of the resulting grinding bodies consists of an austenitic solid solution containing carbides of the M 7 C 3 type which, on the surface, have a very fine structure.
- This example concerns the application of the method. according to the invention for the manufacture of grinding bodies with martensitic structure, by partial cooling of a bar after continuous casting to a holding level at a temperature which makes the austenite unstable, followed by quenching at l blown air.
- Cylindrical grinding bodies are obtained, with a very fine structure at the surface, consisting of a solid martensitic solution comprising primary and secondary carbides of type M 7 C 3 .
- This example relates, like the previous one, to the application of the process according to the invention to the production of cylindrical grinding bodies with martensitic structure, called “Cylpebs”, but by quenching the bar with water or an air-water mixture for a limited period.
- This bar exits at a temperature of 1100 ° C. from a continuous solidification installation and its temperature is lowered continuously to 300 ° C. using an air-water mist sprayed under pressure. Then allowed to cool. bar in calm air up to 120 ° C and the cutting into plots is carried out at this temperature. The pieces are cooled down to room temperature at the cash desk.
- the cylindrical grinding bodies obtained have a fine martensitic structure, from the surface to the core, strewn with carbides of the M s C type.
- the method of manufacturing grinding bodies according to the invention therefore has considerable advantages over the usual methods of the known technique.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Crushing And Grinding (AREA)
- Powder Metallurgy (AREA)
- Forging (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT80400172T ATE4088T1 (de) | 1979-02-05 | 1980-02-04 | Verfahren zur herstellung von mahlkoerpern aus einer eisenlegierung. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7902920A FR2447753A1 (fr) | 1979-02-05 | 1979-02-05 | Procede de fabrication de corps broyants a symetrie axiale en alliage ferreux et nouveaux corps broyants obtenus par ce procede |
| FR7902920 | 1979-02-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0014655A1 EP0014655A1 (fr) | 1980-08-20 |
| EP0014655B1 true EP0014655B1 (fr) | 1983-07-13 |
Family
ID=9221615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP80400172A Expired EP0014655B1 (fr) | 1979-02-05 | 1980-02-04 | Procédé de fabrication de corps broyants en alliage ferreux |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0014655B1 (enExample) |
| AT (1) | ATE4088T1 (enExample) |
| DE (1) | DE3064071D1 (enExample) |
| FR (1) | FR2447753A1 (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2412272C2 (ru) * | 2003-05-22 | 2011-02-20 | Уэйр Минералз Острэйлиа Лтд | Износостойкий чугун |
Families Citing this family (118)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2541910B1 (fr) * | 1983-03-01 | 1985-06-28 | Thome Cromback Acieries | Barre de broyage a haute resistance et son procede de fabrication |
| DE3339550C1 (de) * | 1983-11-02 | 1984-10-25 | Berchem & Schaberg Gmbh, 4650 Gelsenkirchen | Verwendung eines Stahles als Werkstoff zur Herstellung von geschmiedeten Mahlkoerpern fuer Kugelmuehlen |
| US4596282A (en) * | 1985-05-09 | 1986-06-24 | Xaloy, Inc. | Heat treated high strength bimetallic cylinder |
| JPH02500601A (ja) * | 1987-08-25 | 1990-03-01 | ヴセソユズニ ゴスダルストヴェンニ ナウチノ イスレドヴァテルスキ イ プロエクトニ インスチテュート アスベストヴォイ プロミシュレンノスチ | 鋳鋼 |
| BE1008247A6 (fr) * | 1994-04-18 | 1996-02-27 | Magotteaux Int | Aciers a haute teneur en carbone, procede pour leur production et leur utilisation pour des pieces d'usure fabriquees en cet acier. |
| RU2318049C1 (ru) * | 2006-04-17 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2313597C1 (ru) * | 2006-04-17 | 2007-12-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2317347C1 (ru) * | 2006-04-17 | 2008-02-20 | Юлия Алексеевна Щепочкина | Чугун |
| RU2313598C1 (ru) * | 2006-04-19 | 2007-12-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2318044C1 (ru) * | 2006-04-19 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2313602C1 (ru) * | 2006-04-19 | 2007-12-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2318057C1 (ru) * | 2006-04-19 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2318050C1 (ru) * | 2006-04-19 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2313600C1 (ru) * | 2006-04-19 | 2007-12-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2313605C1 (ru) * | 2006-05-02 | 2007-12-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2318034C1 (ru) * | 2006-05-02 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2318036C1 (ru) * | 2006-05-02 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2318046C1 (ru) * | 2006-05-10 | 2008-02-27 | Юлия Алексеевна Щепочкина | Серый чугун |
| RU2318041C1 (ru) * | 2006-05-15 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2318047C1 (ru) * | 2006-05-15 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2318035C1 (ru) * | 2006-05-15 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2320756C1 (ru) * | 2006-05-22 | 2008-03-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2318042C1 (ru) * | 2006-05-22 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2318038C1 (ru) * | 2006-05-22 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2320753C1 (ru) * | 2006-05-29 | 2008-03-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2318039C1 (ru) * | 2006-05-29 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2320754C1 (ru) * | 2006-05-29 | 2008-03-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2320762C1 (ru) * | 2006-05-31 | 2008-03-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2318055C1 (ru) * | 2006-05-31 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2320763C1 (ru) * | 2006-06-13 | 2008-03-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2318059C1 (ru) * | 2006-06-13 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2318043C1 (ru) * | 2006-06-14 | 2008-02-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2320758C1 (ru) * | 2006-07-03 | 2008-03-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2320759C1 (ru) * | 2006-07-11 | 2008-03-27 | Юлия Алексеевна Щепочкина | Чугун |
| RU2322527C1 (ru) * | 2006-07-11 | 2008-04-20 | Юлия Алексеевна Щепочкина | Чугун |
| RU2322526C1 (ru) * | 2006-07-11 | 2008-04-20 | Юлия Алексеевна Щепочкина | Чугун |
| RU2322528C1 (ru) * | 2006-07-11 | 2008-04-20 | Юлия Алексеевна Щепочкина | Чугун |
| DK176544B1 (da) * | 2006-09-08 | 2008-07-28 | Smidth As F L | Temperaturstabil stöbejernslegering samt anvendelse heraf |
| DK176960B1 (da) * | 2006-09-08 | 2010-07-26 | Smidth As F L | Temperaturstabil støbejernslegering samt anvendelse heraf |
| RU2329324C1 (ru) * | 2006-11-24 | 2008-07-20 | Открытое акционерное общество "ГАЗ" (ОАО "ГАЗ") | Чугун |
| RU2337175C1 (ru) * | 2007-03-06 | 2008-10-27 | Государственное образовательное учреждение высшего профессионального образования "Воронежская государственная лесотехническая академия" | Износостойкий чугун |
| RU2348732C1 (ru) * | 2007-05-08 | 2009-03-10 | Юлия Алексеевна Щепочкина | Чугун |
| RU2345160C1 (ru) * | 2007-05-11 | 2009-01-27 | Николай Георгиевич Заматаев | Белый износостойкий чугун |
| RU2348733C1 (ru) * | 2007-05-16 | 2009-03-10 | Юлия Алексеевна Щепочкина | Чугун |
| RU2348731C1 (ru) * | 2007-06-18 | 2009-03-10 | Юлия Алексеевна Щепочкина | Чугун |
| RU2347838C1 (ru) * | 2007-07-02 | 2009-02-27 | Юлия Алексеевна Щепочкина | Чугун |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1513313A (fr) * | 1965-09-20 | 1968-02-16 | Quebec Iron Foundries Ltd Soc | Fontes blanches manganèse-cuivre-molybdène |
| DE1298390B (de) * | 1967-01-13 | 1969-06-26 | Magotteaux Fond | Kugeln, Auskleidungsplatten und aehnliche Gegenstaende aus Gussstahl |
| FR2103686A6 (en) * | 1971-03-19 | 1972-04-14 | Quebec Iron Foundries | Alloyed white cast iron - with high hardness and superior wear - and impact resistance |
| AU458670B2 (en) * | 1972-03-02 | 1975-03-06 | HENRY MOORE and HARRY HARVEY KESSLER WILLIAM | Abrasion resistant cast iron |
| JPS5021414B2 (enExample) * | 1972-03-06 | 1975-07-23 | ||
| FR2228115B1 (enExample) * | 1973-05-04 | 1975-11-21 | Thome Cromback Acieries | |
| CA1052599A (en) * | 1976-09-13 | 1979-04-17 | Noranda Mines Limited | Wear resistant low alloy white cast iron |
| FR2405749A1 (fr) * | 1977-10-14 | 1979-05-11 | Thome Cromback Acieries | Nouveaux corps broyants forges, notamment boulets de broyage, et leur procede de fabrication |
-
1979
- 1979-02-05 FR FR7902920A patent/FR2447753A1/fr active Granted
-
1980
- 1980-02-04 DE DE8080400172T patent/DE3064071D1/de not_active Expired
- 1980-02-04 AT AT80400172T patent/ATE4088T1/de not_active IP Right Cessation
- 1980-02-04 EP EP80400172A patent/EP0014655B1/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2412272C2 (ru) * | 2003-05-22 | 2011-02-20 | Уэйр Минералз Острэйлиа Лтд | Износостойкий чугун |
| US9222154B2 (en) | 2003-05-22 | 2015-12-29 | Weir Minerals Australia Ltd. | Wear resistant cast iron |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3064071D1 (en) | 1983-08-18 |
| FR2447753A1 (fr) | 1980-08-29 |
| ATE4088T1 (de) | 1983-07-15 |
| EP0014655A1 (fr) | 1980-08-20 |
| FR2447753B1 (enExample) | 1982-09-10 |
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