CN105837184B - Extra heavy magnalium pottery grinding stone - Google Patents

Extra heavy magnalium pottery grinding stone Download PDF

Info

Publication number
CN105837184B
CN105837184B CN201610172299.8A CN201610172299A CN105837184B CN 105837184 B CN105837184 B CN 105837184B CN 201610172299 A CN201610172299 A CN 201610172299A CN 105837184 B CN105837184 B CN 105837184B
Authority
CN
China
Prior art keywords
parts
magnalium
grinding stone
extra heavy
pottery
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.)
Active
Application number
CN201610172299.8A
Other languages
Chinese (zh)
Other versions
CN105837184A (en
Inventor
沈丽华
王林丹
沈川江
吕阿琴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huzhou Hua Tong Grinder Manufacturing Co Ltd
Original Assignee
Huzhou Hua Tong Grinder Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huzhou Hua Tong Grinder Manufacturing Co Ltd filed Critical Huzhou Hua Tong Grinder Manufacturing Co Ltd
Priority to CN201610172299.8A priority Critical patent/CN105837184B/en
Publication of CN105837184A publication Critical patent/CN105837184A/en
Application granted granted Critical
Publication of CN105837184B publication Critical patent/CN105837184B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206Magnesium oxides or oxide-forming salts thereof
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208Calcium oxide or oxide-forming salts thereof, e.g. lime
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3272Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite

Abstract

The present invention relates to a kind of extra heavy magnalium potteries to grind stone material, with Al2O380-85 parts, MgO 3-8 wt%, Fe2O34-7 parts, CaO2-5 parts and 3-7 parts of auxiliary material are raw material, are sintered under the conditions of 1450 °C -1520 °C after green compact are made.Use Na2SiO3Aqueous solution and TiCl4Reaction forms a kind of uniform colloid, substitutes traditional high molecular material as binder, reduces degreasing in preparation process(De- binder)Step;Due to the use of Na2SiO3With TiCl4Hydrolysate forms titan silicate colloid as inorganic binder, and finer and close using grinding stone internal structure, material has density high, and quality is big, low wear rate, and stock-removing efficiency is high, is suitble to processing hard metal.Simple for process, processing cost is low, is suitble to industrialized production.

Description

Extra heavy magnalium pottery grinding stone
Technical field
The invention belongs to grinding-material technical field more particularly to a kind of extra heavy magnalium pottery grinding stones.
Background technology
Grinding stone refers to for shaking(Grinding)Polishing machine rolls(Grinding)Polishing machine simultaneously can be used for centrifuging(It grinds Mill)Polishing machine, eddy current type(Grinding)Polishing machine etc. is other(Grinding)All kinds of abrasive materials in polishing machine.Grinding stone is that metal grinding is thrown Indispensable rapidoprint in photoreduction process.Mainly have:Brown Alundum grinding stone, resin ground stone, ceramic grinding stone, alumina porcelain are ground Several big types such as grinding stone, high frequency porcelain grinding stone.
Ceramic grinding stone is mainly characterized by that grinding force is medium, is mainly used for the middle mill of various hardware industry products.Mainly Suitable for vibrations(Grinding)Polishing machine rolls(Grinding)Polishing machine, while can also centrifuge(Grinding)Polishing machine, eddy current type(It grinds Mill)Polishing machine etc. is other(Grinding)It is used in polishing machine.
With Al2O3--SiO2For main component, contain the oxide pottery of the mineralizers such as a certain amount of Ba, Ca, Zr, Mg simultaneously Porcelain belongs to alumina porcelain.Wherein Al2O3Content should be in 45%-99%.The proportion of alumina porcelain grinding stone is in 3.4g/cm3More than, just by Referred to as extra heavy ceramics.Under normal circumstances, alumina porcelain grinding stone alumina content is more than 75%, crisp as alumina content increases Property also increases, so comparing for aluminium alloy, kirsite, copper, resin(Plastics)Deng the product surface Throwing light that the material is soft, it is electroplated Preceding fine grinding is usually used in family property hardware(Such as knob, lockset)And luggage hardware(Such as belt fastener, bag buckle, shoe buckle).With gold Belong to the rapid development of material, alumina porcelain grinding stone seems that no advantage, grinding stone are easy in terms of the grinding and polishing of hard alloy It bursts apart, stock-removing efficiency is very low.
Invention content
In order to solve the above technical problems, the present invention provides a kind of extra heavy magnalium pottery grinding stone, which has proportion Greatly, density is high, and stock-removing efficiency is high, is suitble to processing hard metal, precision machinery metal component.
The invention is realized by the following technical scheme.
A kind of extra heavy magnalium pottery grinding stone, which is characterized in that be made of following parts by weight of raw materials:Al2O3 80-85 Part, 3-8 parts of MgO, Fe2O33-7 parts of 4-7 parts, 2-5 parts of CaO and auxiliary material, wherein auxiliary material is Na2SiO3 2-6 parts, TiCl4 1.0-2.0 part.
Preferably, the extra heavy magnalium pottery grinding stone, is made of following raw material composition:Al2O3 82-85wt%、MgO 4-7 parts, Fe2O34-6 parts, 3-5 parts of CaO and Na2SiO3 3-5 parts, TiCl41.0 part.
It is highly preferred that the extra heavy magnalium pottery grinding stone, is made of following raw material composition:Al2O382 parts, MgO 5 Part, Fe2O35 parts, 3 parts of CaO and Na2SiO34 parts, TiCl41.0 part.
The auxiliary material is Na2SiO3And TiCl4, wherein Na2SiO35-6 parts, TiCl41.0-2.0 part.
The extra heavy magnalium pottery grinding stone, proportion are 3.4-3.6 g/cm3
The present invention is extra heavy, and magnalium pottery grinding stone is prepared by following steps:
1, raw material major ingredient Al is weighed by setting ratio2O3Powder, MgO powder, Fe2O3Powder and CaO powder;
2, the raw material weighed up is mixed, grinding is uniform;
3, by Na2SiO3It is 5-10% aqueous solutions to be made into weight concentration, is gradually added TiCl4, it is kept stirring in adition process, Form a kind of homogeneous system;
4, the material of step 2 and step 3 is uniformly mixed;Suitable quantity of water is added, dry paste is stirred into;
5, paste material is poured into die cast in mold, low temperature drying;
6, the molding ceramic green of drying is kept the temperature 1-3 hours under the conditions of 1450 °C -1520 °C of high temperature, obtains extra heavy aluminium Magnesium pottery grinding stone.
In the present invention, Fe2O3With Al2O3Lattice constant is close, and can activate lattice, with Al2O3Solid solution is formed, pottery is made Porcelain is easy to recrystallize and be sintered, while increasing the mechanical performance of ceramics, improves ceramic proportion and toughness.MgO and CaO can with it is other Ingredient forms binary, ternary or polynary eutectic in sintering process, thus greatly reduces the sintering of aluminium oxide ceramics Temperature.
Extra heavy magnalium pottery grinding stone of the invention, is a kind of alumina porcelain grinding stone, compared with prior art, present invention tool There are following characteristics:
1, material of the present invention has density high, and quality is big, low wear rate(Less than 0.035%), stock-removing efficiency is high, is suitble to add Work hard metal.Use Na2SiO3Aqueous solution and TiCl4Reaction forms a kind of uniform colloid and replaces high-molecular organic adhesive, uses Grinding stone internal structure is finer and close.
2, material preparation process of the present invention is simple, and firing temperature is relatively low, is easy to industrialized production.
Specific implementation mode
In order to better illustrate the present invention, below by way of specific embodiment, the present invention is described in further detail.
Embodiment 1
Weigh Al2O3Powder 80g, MgO powder 8g, Fe2O3Powder 4g, CaO powder 5g, mixing, then grinding is uniform;3 parts of addition is auxiliary Material, auxiliary material is by 2 parts of Na2SiO3It is 10% aqueous solution to be made into weight concentration, is gradually added 1 part of TiCl4, keeps stirring in adition process It mixes, forms a kind of homogeneous system;It adds suitable quantity of water and is tuned into dry paste;Paste material pours into clean mold, die cast, 80 °C of drying obtain green compact, put the green body into Muffle furnace, are to slowly warm up to 1450 °C, keep the temperature 3 hours, natural cooling to get To extra heavy magnalium pottery grinding stone.It is 3.4 g/cm to test its proportion3, wear rate 0.032%.Wherein auxiliary material is
Embodiment 2
Weigh Al2O3Powder 85g, MgO powder 3g, Fe2O3Powder 7g, CaO powder 2g, mixing, then grinding is uniform;3 parts of addition is auxiliary Material, auxiliary material is by 2 parts of Na2SiO3It is 10% aqueous solution to be made into weight concentration, is gradually added 1 part of TiCl4, keep stirring in adition process It mixes, forms a kind of homogeneous system;It adds suitable quantity of water and is tuned into dry paste;Paste material pours into clean mold, die cast, 80 °C of drying obtain green compact, put the green body into Muffle furnace, it is slow thousand temperature to 1480 °C, keep the temperature 2 hours, natural cooling to get To extra heavy magnalium pottery grinding stone.It is 3.6 g/cm to test its proportion3, wear rate 0.033%.
Embodiment 3
Weigh Al2O3Powder 82g, MgO powder 4g, Fe2O3Powder 6g, CaO powder 3g, mixing, then grinding is uniform;5 parts of addition is auxiliary Material, auxiliary material is by 4 parts of Na2SiO3It is 8% aqueous solution to be made into weight concentration, is gradually added 1 part of TiCl4, keeps stirring in adition process It mixes, forms a kind of homogeneous system;It adds suitable quantity of water and is tuned into dry paste;Paste material pours into clean mold, die cast, 80 °C of drying obtain green compact, put the green body into Muffle furnace, are to slowly warm up to 1500 °C, keep the temperature 2 hours, natural cooling to get To extra heavy magnalium pottery grinding stone.It is 3.5 g/cm to test its proportion3, wear rate 0.031%.
Embodiment 4
Weigh Al2O3Powder 80g, MgO powder 7g, Fe2O3Powder 4g, CaO powder 2g, mixing, then grinding is uniform;7 parts of addition is auxiliary Material, auxiliary material is by 5 parts of Na2SiO3It is 8% aqueous solution to be made into weight concentration, is gradually added 2 parts of TiCl4, keep stirring in adition process It mixes, forms a kind of homogeneous system;It adds suitable quantity of water and is tuned into dry paste;Paste material pours into clean mold, die cast, 80 °C of drying obtain green compact, put the green body into Muffle furnace, are to slowly warm up to 1520 °C, keep the temperature 1 hour, natural cooling to get To extra heavy magnalium pottery grinding stone.It is 3.6 g/cm to test its proportion3, wear rate 0.034%.
Embodiment 5
Weigh Al2O3Powder 82g, MgO powder 5g, Fe2O3Powder 5g, CaO powder 3g, mixing, then grinding is uniform;7 parts of addition is auxiliary Material, auxiliary material is by 6 parts of Na2SiO3It is 10% aqueous solution to be made into weight concentration, is gradually added 1 part of TiCl4, keep stirring in adition process It mixes, forms a kind of homogeneous system;It adds suitable quantity of water and is tuned into dry paste;Paste material pours into clean mold, die cast, 80 °C of drying obtain green compact, put the green body into Muffle furnace, are to slowly warm up to 1450 °C, keep the temperature 3 hours, natural cooling to get To extra heavy magnalium pottery grinding stone.It is 3.6 g/cm to test its proportion3, wear rate 0.030%.
Above example is only for the purpose of description not intended to limit the invention, it is all the spirit and principles in the present invention it Interior, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
1. a kind of extra heavy magnalium pottery grinding stone, which is characterized in that be made by weight of following raw material:Al2O3 80-85 parts, 3-8 parts of MgO, Fe2O33-7 parts of 4-7 parts, 2-5 parts of CaO and auxiliary material, wherein auxiliary material is Na2SiO32-6 parts, TiCl41.0-2.0 part.
2. extra heavy magnalium pottery grinding stone according to claim 1, which is characterized in that by following raw material composition system At:Al2O382-85 parts, 4-7 parts of MgO, Fe2O34-6 parts, 3-5 parts of CaO and Na2SiO33-5 parts, TiCl41.0 part.
3. extra heavy magnalium pottery grinding stone according to claim 2, which is characterized in that by following raw material composition It is made:Al2O382 parts, 5 parts of MgO, Fe2O35 parts, 3 parts of CaO and Na2SiO3 4 parts, TiCl41.0 part.
4. extra heavy magnalium pottery grinding stone according to claim 1, which is characterized in that the auxiliary material is first will Na2SiO3It is 5-10% solution to be made into weight concentration, is gradually added TiCl4, is kept stirring in adition process, forms a kind of homogeneous body System.
5. extra heavy magnalium pottery grinding stone according to claim 1, which is characterized in that the extra heavy magnalium pottery Porcelain grinding stone, proportion are 3.4-3.6 g/cm3
6. extra heavy magnalium pottery grinding stone preparation method described in claim 1, preparation process are as follows:
1)Raw material major ingredient Al is weighed by setting ratio2O3Powder, MgO powder, Fe2O3Powder and CaO powder;
2)The raw material weighed up is mixed, grinding is uniform;
3)By Na2SiO3It is 5-10% aqueous solutions to be made into weight concentration, is gradually added TiCl4, it is kept stirring in adition process, Form a kind of homogeneous system;
4)The material of step 2 and step 3 is uniformly mixed;Suitable quantity of water is added, dry paste is stirred into;
5)Paste material is poured into die cast in mold, low temperature drying;
6)The molding ceramic green of drying is kept the temperature 1-3 hours under the conditions of 1450 DEG C -1520 DEG C of high temperature, obtains extra heavy aluminium Magnesium pottery grinding stone.

Claims (6)

1. a kind of extra heavy magnalium pottery grinding stone, which is characterized in that be made by weight of following raw material:Al2O3 80-85 Part, 3-8 parts of MgO, Fe2O33-7 parts of 4-7 parts, 2-5 parts of CaO and auxiliary material, wherein auxiliary material is Na2SiO32-6 parts and TiCl4 1.0-2.0 part.
2. extra heavy magnalium pottery grinding stone according to claim 1, which is characterized in that be made of following raw material composition: Al2O382-85 parts, 4-7 parts of MgO, Fe2O34-6 parts, 3-5 parts of CaO and Na2SiO33-5 parts, TiCl41.0 part.
3. extra heavy magnalium pottery grinding stone according to claim 2, which is characterized in that be made of following raw material composition: Al2O382 parts, 5 parts of MgO, Fe2O35 parts, 3 parts of CaO and Na2SiO3 4 parts, TiCl41.0 part.
4. extra heavy magnalium pottery grinding stone according to claim 1, which is characterized in that the auxiliary material is first by Na2SiO3 It is 5-10% solution to be made into weight concentration, is gradually added TiCl4, it is kept stirring in adition process, forms a kind of homogeneous system.
5. extra heavy magnalium pottery grinding stone according to claim 1, which is characterized in that the extra heavy magnalium pottery is ground Grinding stone, proportion are 3.4-3.6 g/cm3
6. extra heavy magnalium pottery grinding stone preparation method described in claim 1, preparation process are as follows:
1)Raw material major ingredient Al is weighed by setting ratio2O3Powder, MgO powder, Fe2O3Powder and CaO powder;
2)The raw material weighed up is mixed, grinding is uniform;
3)By Na2SiO3It is 5-10% aqueous solutions to be made into weight concentration, is gradually added TiCl4, it is kept stirring in adition process, is formed A kind of homogeneous system;
4)The material of step 2 and step 3 is uniformly mixed;Suitable quantity of water is added, dry paste is stirred into;
5)Paste material is poured into die cast in mold, low temperature drying;
6)The molding ceramic green of drying is kept the temperature 1-3 hour under the conditions of 1450 DEG C -1520 DEG C of high temperature, extra heavy magnalium is obtained and makes pottery Porcelain grinding stone.
CN201610172299.8A 2016-03-24 2016-03-24 Extra heavy magnalium pottery grinding stone Active CN105837184B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610172299.8A CN105837184B (en) 2016-03-24 2016-03-24 Extra heavy magnalium pottery grinding stone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610172299.8A CN105837184B (en) 2016-03-24 2016-03-24 Extra heavy magnalium pottery grinding stone

Publications (2)

Publication Number Publication Date
CN105837184A CN105837184A (en) 2016-08-10
CN105837184B true CN105837184B (en) 2018-10-26

Family

ID=56584481

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610172299.8A Active CN105837184B (en) 2016-03-24 2016-03-24 Extra heavy magnalium pottery grinding stone

Country Status (1)

Country Link
CN (1) CN105837184B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104254429A (en) * 2012-04-04 2014-12-31 3M创新有限公司 Abrasive particles, method of making abrasive particles, and abrasive articles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002020994A (en) * 2000-07-05 2002-01-23 Tomoji Tanaka Electromagnetic wave absorbing material and processed article applying the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104254429A (en) * 2012-04-04 2014-12-31 3M创新有限公司 Abrasive particles, method of making abrasive particles, and abrasive articles

Also Published As

Publication number Publication date
CN105837184A (en) 2016-08-10

Similar Documents

Publication Publication Date Title
RU2013133756A (en) Processing of ash ash and the manufacture of products containing compositions on the basis of ash ash
CN107793128A (en) Low expansion ceramic blank and its preparation method and application
CN103521690A (en) Easily-collapsible mud core molding sand and preparation method thereof
CN103524142A (en) Preparation method of silicon nitride-silicon carbide-titanium carbide micro-nano composite material
CN110818398A (en) Sagger for high-temperature firing and preparation method thereof
KR102094198B1 (en) Silicon carbide high carbon composite material and manufacturing method thereof
WO2009020635A2 (en) Method of preparing pressureless sintered, highly dense boron carbide materials
EP3196179B1 (en) Method of producing a cured body made of a cement composition
JPH08283073A (en) Kiln tool
US4029630A (en) Process for the manufacture of structural elements
CN105837184B (en) Extra heavy magnalium pottery grinding stone
US11028019B2 (en) Boron carbide composite
CN107214343A (en) A kind of preparation method of gradient nozzle
JP3074246B2 (en) Method for producing high-strength inorganic foam
WO1993019017A1 (en) Composition for high pressure casting slip, high pressure casting slip and method for preparing the composition and slip
Doroganov et al. Development and study of composite refractory materials based on modified dispersed systems.
JP5475213B2 (en) Improved wear-resistant metal part and method of manufacturing the same
RU2171244C1 (en) Method of preparing corundum ceramic material
JP2000169201A (en) Production of admixture for cement and composition using the admixture
CN105838261A (en) Polishing and grinding material and preparation method thereof
RU2379257C1 (en) Method for making alumina ceramic products
CN107265868A (en) Devitrified glass prepared by a kind of utilization bluestone powder and preparation method thereof
JPH02205224A (en) Molding sand and production thereof
CN104591758A (en) Preparation method of aluminium titanate ceramic sprue bush for casting
JPS5957937A (en) Manufacture of calcium carbonate hardened body

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Extra heavy aluminum magnesium ceramic abrasive stone

Effective date of registration: 20221019

Granted publication date: 20181026

Pledgee: Nanxun Zhejiang rural commercial bank Limited by Share Ltd. and Fu sub branch

Pledgor: HUZHOU HUA TONG GRINDER MANUFACTURING Co.,Ltd.

Registration number: Y2022330002591

PE01 Entry into force of the registration of the contract for pledge of patent right