CN106625198A - Compound superhard honing oilstone containing zirconium oxide and preparation method of compound superhard honing oilstone - Google Patents
Compound superhard honing oilstone containing zirconium oxide and preparation method of compound superhard honing oilstone Download PDFInfo
- Publication number
- CN106625198A CN106625198A CN201611222837.6A CN201611222837A CN106625198A CN 106625198 A CN106625198 A CN 106625198A CN 201611222837 A CN201611222837 A CN 201611222837A CN 106625198 A CN106625198 A CN 106625198A
- Authority
- CN
- China
- Prior art keywords
- honing stone
- superhard
- zirconium oxide
- zirconic compound
- raw material
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B33/00—Honing machines or devices; Accessories therefor
- B24B33/08—Honing tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention provides compound superhard honing oilstone containing zirconium oxide and a preparation method of the compound superhard honing oilstone, and relates to the technical field of precision machining. The honing oilstone is mainly composed of zirconium oxide, copper, silver, aluminum, zinc, tin, iron, nickel, cobalt, lead, an adhesive, a superhard material and the like. According to the honing oilstone, the problems that in the prior art, due to the single grinding property of honing oilstone composed of a single grinding material, the grinding effect on materials hard to machine is not ideal, certain use limitations exist, and even though multi-element mixed type honing oilstone imported from abroad can achieve a very good grinding machining effect, the multi-element mixed type honing oilstone is short in service lie and high in price are solved. The prepared honing oilstone achieves the technical effects of being excellent in self-sharpening performance, sharp in grinding, high in grinding quality, high in grinding speed, resistant to high temperature and long in service life.
Description
Technical field
The present invention relates to precise machine machining field, more particularly, to a kind of zirconic compound superhard honing is contained
Oilstone and preparation method thereof.
Background technology
Honing, also known as boring mill, refers to and uses the honing stone being embedded on honing head under low cutting speed to workpiece
The method that surface carries out skin processing, is a kind of special shape of grinding, and main 5～500 millimeters of diameter of processing is even more
Big various cylindrical holes, the ratio in hole depth and aperture is up to 10 or bigger.Under certain condition, plane, periphery, ball can also be processed
Face, flank of tooth etc..Honing process as it is a kind of raising bore area machining accuracy and reduce surface roughness method for fine finishing, no
It is only capable of removing larger allowance, and dimensional accuracy, geometrical precision can be improved and surface roughness is reduced, it is extensive
Be applied to the finishing step of hole type parts in the industries such as automobile, aviation, petroleum machinery, engineering machinery and war industry.
Honing stone is used as one of principal element for affecting Hole honing surface quality and honing efficiency, the characteristic of its abrasive material
And composition can all produce most direct impact to the grinding performance of oilstone.The honing oil being made up of single abrasive material in prior art
Stone, due to its single grinding characteristic, to some difficult-to-machine materials (the such as pig iron), its ground effect is not highly desirable, uses
On have certain limitation.Although the mixture of multi-elements formula honing stone of external import can reach good grinding effect,
But its service life is short, and price is high, its use is also limit.
Therefore, researching and developing one kind has grinding sharp, and grinding efficiency and quality are high, and the grinding time is short, service life
The honing stone of the advantages of long, self-sharpening is excellent, preparation is easy, to the honing oil for replacing traditional single abrasive material and external import
Stone, for China's precise machine machining field have it is real with necessary meaning.
In view of this, it is special to propose the present invention.
The content of the invention
The first object of the present invention is to provide a kind of containing zirconic compound superhard honing stone, and this contains zirconic
Compound superhard honing stone have be ground that sharp, grinding quality is high, grinding speed is fast, long service life and excellent excellent of self-sharpening
Point.
The second object of the present invention is to provide a kind of preparation method containing zirconic compound superhard honing stone, should
Preparation method has the advantages that process is simple and processing cost are low.
The third object of the present invention is to provide a kind of application containing zirconic compound superhard honing stone, the honing
Oilstone is applied to the finishing step of the hole type parts in the industries such as automobile mechanical, aviation machine, petroleum machinery and engineering machinery,
Have the advantages that high in machining efficiency and crudy is high.
One kind that the present invention is provided contains zirconic compound superhard honing stone, and above-mentioned honing stone is mainly by following heavy
The raw material composition of amount percentage：Zirconium oxide 0.1～2%, copper 30～60%, silver 1～6%, aluminium 1～10%, zinc 1～6%, tin 5
～20%, iron 5～20%, nickel 1～10%, cobalt 1～10%, lead 1～9%, binding agent 1～5% and superhard material 5%～
20%, above-mentioned raw materials percentage by weight sum is equal to 100%.
Further, above-mentioned honing stone is mainly comprised the following raw materials by weight percent：Zirconium oxide 0.5～1.5%,
Copper 35～50%, silver 2～5%, aluminium 2～8%, zinc 2～5%, tin 8～18%, iron 8～18%, nickel 2～8%, cobalt 2～8%,
Lead 2～7%, binding agent 2～4% and superhard material 8%～18%, above-mentioned raw materials percentage by weight sum is equal to 100%；
Preferably, above-mentioned honing stone is mainly comprised the following raw materials by weight percent：Zirconium oxide 1%, copper 45%, silver
4%th, aluminium 4%, zinc 2%, tin 10%, iron 10%, nickel 4%, cobalt 4%, lead 3%, binding agent 3% and superhard material 10%.
Further, above-mentioned raw materials zirconium oxide, copper, silver, aluminium, zinc, tin, iron, nickel, cobalt and lead independently are purity and are more than
Or the particle that the granularity equal to 99% is 80～1000 mesh.
Further, above-mentioned binding agent is the one kind or several in wax-based binder, oil based binder or polyacetals based binder
The mixing planted.
Further, above-mentioned superhard material be diamond, cubic boron nitride, boron carbide or carborundum in one kind or
Several mixing.
Further, the granularity of above-mentioned superhard material is 80～1000 mesh.
A kind of preparation method containing zirconic compound superhard honing stone that the present invention is provided, comprises the following steps：
Each raw material is weighed by the above-mentioned percentage by weight containing zirconic compound superhard honing stone, each raw material is pressed after being well mixed
System, then obtains above-mentioned containing zirconic compound superhard honing stone to the mixture sintering after compacting.
Further, above-mentioned being compressed to is suppressed under vacuum conditions, and compacting vacuum is 1 × 10-2～1 × 10- 6Pa, press temperature is 400～600 DEG C, and the press time is 5～12min, and pressing pressure is 40～120MPa.
Further, the sintering temperature of above-mentioned sintering is 550～800 DEG C, and sintering time is 5～12min.
A kind of application containing zirconic compound superhard honing stone that the present invention is provided, by above-mentioned containing zirconic
Compound superhard honing stone is applied to the hole type parts finishing of automobile mechanical, aviation machine, petroleum machinery and engineering machinery
In operation.
Compared with prior art, beneficial effects of the present invention are：
The present invention provide one kind contain zirconic compound superhard honing stone, be one kind by multicomponent composite materials group
Into honing stone, it is by the metallic elements such as zirconium oxide, copper, silver, aluminium, zinc, tin, iron, nickel, cobalt and lead and binding agent and superhard
Material is constituted, compared to the honing stone being made up of single abrasive material, what the present invention was made up of Determination of multiple metal elements and superhard material
Honing stone, its grinding efficiency and quality are high, and grinding is sharp, and the grinding time is short, long service life.
Additionally, zirconium oxide has been provided in the honing stone of present invention offer, honing stone addition 0.1 of the present invention～
After 2% zirconium oxide, due to zirconium oxide be added in metal have strong deoxidation, denitrogenate, the effect of desulfuration, will aoxidize
Zirconium is applied in honing stone of the present invention, can be very good hardness, intensity and the high temperature resistant type for improving honing stone of the present invention, system
It is standby go out honing stone self-sharpening it is excellent, be ground that sharp, grinding quality is high, grinding speed is fast, not only gently but also high temperature resistant, and then extend
The service life of honing stone.
The preparation method technological process containing zirconic compound superhard honing stone that the present invention is provided is simple, only need by
After each raw material is well mixed, suppressed, be subsequently sintered and can be prepared by containing zirconic compound superhard honing stone.This
Preparation process step of the invention containing zirconic compound superhard honing stone is few, and special equipment is not needed during preparation, and then
Short, the low effect of processing cost the time required to having reached preparation, honing stone of its price significantly lower than external import.
The application containing zirconic compound superhard honing stone that the present invention is provided, the honing stone is widely applied
In the hole type parts finishing step of automobile mechanical, aviation machine, petroleum machinery and engineering machinery, due to the honing oil stone mill
Cut sharp, grinding speed fast, therefore there is high in machining efficiency and crudy in the finishing step of above-mentioned each hole type parts
High advantage.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with embodiment, it is clear that described reality
It is a part of embodiment of the invention to apply example, rather than the embodiment of whole.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
According to an aspect of the present invention, it is a kind of to contain zirconic compound superhard honing stone, the honing stone master
Comprise the following raw materials by weight percent：Zirconium oxide 0.1～2%, copper 30～60%, silver 1～6%, aluminium 1～10%, zinc 1
～6%, tin 5～20%, iron 5～20%, nickel 1～10%, cobalt 1～10%, lead 1～9%, binding agent 1～5% and superhard material
5%～20%, the raw material weight percentage sum is equal to 100%.
The present invention act as containing each raw material in zirconic compound superhard honing stone：
Zirconium oxide be added in metal have strong deoxidation, denitrogenate, the effect of desulfuration.As long as adding in metal a small amount of
Zirconium oxide, hardness and intensity will be improved shockingly, while greatly improving its fusing point.Zirconium oxide is applied into the present invention
In honing stone, hardness, intensity and the high temperature resistant type for improving honing stone of the present invention, the honing stone prepared are can be very good
Not only light but also high temperature resistant, intensity and life-span can reach more than the several times of common honing stone.
In the present invention, by weight percentage, zirconic typical but non-limiting content is：0.1%th, 0.2%,
0.3%th, 0.5%, 0.8%, 1%, 1.2%, 1.5%, 1.8% or 2%.
Copper is a kind of transition elements, and ductility is good, durability is strong, repeatedly can reclaim and lossless its mechanical performance.
In the present invention, by weight percentage, the typical but non-limiting content of copper is：30%th, 32%, 34%,
36%th, 38%, 40%, 42%, 44%, 46%, 48%, 50%, 52%, 54%, 56%, 58% or 60%.
Silver is a kind of important noble metal, and physical property is stable, and ductility is good.
In the present invention, by weight percentage, the typical but non-limiting content of silver is：1%th, 1.2%, 1.4%,
1.6%th, 1.8%, 2%, 2.2%, 2.4%, 2.6%, 2.8%, 3%, 3.2%, 3.4%, 3.6%, 3.8%, 4%,
4.2%th, 4.4%, 4.6%, 4.8%, 5%, 5.2%, 5.4%, 5.6%, 5.8% or 6%.
Aluminium is a kind of silvery white light metal, there is ductility.
In the present invention, by weight percentage, the typical but non-limiting content of aluminium is：1%th, 1.5%, 2%,
2.5%th, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5% or
10%.
Zinc is a kind of grayish transition metal, more crisp under room temperature.
In the present invention, by weight percentage, the typical but non-limiting content of zinc is：1%th, 1.2%, 1.4%,
1.6%th, 1.8%, 2%, 2.2%, 2.4%, 2.6%, 2.8%, 3%, 3.2%, 3.4%, 3.6%, 3.8%, 4%,
4.2%th, 4.4%, 4.6%, 4.8%, 5%, 5.2%, 5.4%, 5.6%, 5.8% or 6%.
Tin is a kind of metallic element of the low melting point of the white gloss of bit bluish, soft, flexible, is rich at normal temperatures
Malleability.
In the present invention, by weight percentage, the typical but non-limiting content of tin is：5%th, 6%, 7%, 8%,
9%th, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19% or 20%.
Iron is widely used metal in a kind of life, with good ductility.
In the present invention, by weight percentage, the typical but non-limiting content of iron is：5%th, 6%, 7%, 8%,
9%th, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19% or 20%.
Nickel is a kind of approximate silvery white, has ductility and have ferromagnetic metallic element firmly, and it being capable of high polish
With it is anticorrosive.
In the present invention, by weight percentage, the typical but non-limiting content of nickel is：1%th, 2%, 3%, 4%,
5%th, 6%, 7%, 8%, 9% or 10%.
Cobalt is argenteous ferromagnetic metal, and surface is harder and crisp in silvery white slightly pale pink.
In the present invention, by weight percentage, the typical but non-limiting content of cobalt is：1%th, 2%, 3%, 4%,
5%th, 6%, 7%, 8%, 9% or 10%.
Lead is the soft and strong a kind of weak metal of ductility.
In the present invention, by weight percentage, the typical but non-limiting content of lead is：1%th, 2%, 3%, 4%,
5%th, 6%, 7%, 8% or 9%.
Binding agent be the intensity in order to improve pressed compact or prevent powder segregation and be added in powder can before sintering or
The material removed in sintering process, is the guarantee of adhesion strength between abrasive material and matrix.
In the present invention, by weight percentage, the typical but non-limiting content of binding agent is：1%th, 1.1%,
1.2%th, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, 2.1%, 2.2%, 2.3%, 2.4%,
2.5%th, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%,
3.8%th, 3.9%, 4%, 4.1%, 4.2%, 4.3%, 4.4%, 4.5%, 4.6%, 4.7%, 4.8%, 4.9% or 5%.
Superhard material refers to the material that hardness can be comparable with diamond, it is adaptable to manufacture the instrument of other materials, especially
It is in terms of processing hard material, with unrivaled superiority.
In the present invention, by weight percentage, the typical but non-limiting content of superhard material is：5%th, 6%, 7%,
8%th, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19% or 20%.
One kind that the present invention is provided contains zirconic compound superhard honing stone, is that one kind has multicomponent composite materials group
Into honing stone, it is by the metallic elements such as zirconium oxide, copper, silver, aluminium, zinc, tin, iron, nickel, cobalt, lead and binding agent and superhard
Material is constituted, and compared to the honing stone being made up of single abrasive material in prior art, the present invention has Determination of multiple metal elements and superhard
The honing stone of material composition, its grinding efficiency and grinding quality height, and grinding is sharp, the grinding time is short, long service life.
Additionally, zirconium oxide has been provided in the honing stone of present invention offer, honing stone addition 0.1 of the present invention～
After 2% zirconium oxide, due to zirconium oxide be added in metal have strong deoxidation, denitrogenate, the effect of desulfuration, will aoxidize
Zirconium is applied in honing stone of the present invention, can be very good hardness, intensity and the high temperature resistant type for improving honing stone of the present invention, system
It is standby go out honing stone self-sharpening it is excellent, be ground that sharp, grinding quality is high, grinding speed is fast, not only gently but also high temperature resistant, and then extend
The service life of honing stone.
In the present invention, " micro " of the micro-oxidation zirconium refers to that zirconic addition is few, exemplary addition
For 0.1%～2%.
In the preferred embodiment of the present invention, the honing stone is mainly by the raw material group of following percentage by weight
Into：Zirconium oxide 0.5～1.5%, copper 35～50%, silver 2～5%, aluminium 2～8%, zinc 2～5%, tin 8～18%, iron 8～
18%th, nickel 2～8%, cobalt 2～8%, lead 2～7%, binding agent 2～4% and superhard material 8%～18%, the raw material weight
Percentage sum is equal to 100%；
Preferably, the honing stone is mainly comprised the following raw materials by weight percent：Zirconium oxide 1%, copper 45%, silver
4%th, aluminium 4%, zinc 2%, tin 10%, iron 10%, nickel 4%, cobalt 4%, lead 3%, binding agent 3% and superhard material 10%.
In the preferred embodiment of the present invention, the raw material zirconium oxide, copper, silver, aluminium, zinc, tin, iron, nickel, cobalt and
Lead independently is the particle that granularity of the purity more than or equal to 99% is 80～1000 mesh.
It is above-mentioned preferred embodiment in, purity more than or equal to 99% zirconium oxide, copper, silver, aluminium, zinc, tin, iron,
The impurity content of nickel, cobalt and lead is few, and the grinding performance of prepared honing stone is more excellent.
It is above-mentioned preferred embodiment in, the raw material zirconium oxide, copper, silver, aluminium, zinc, tin, iron, nickel, cobalt and lead are
Granularity is the particle of 80～1000 mesh, and the particle diameter of corresponding superhard material is 180 μm -13 μm, the superhard material of small particle
The specific surface area of material is big, and the distribution in the case of same volume in above-mentioned honing stone is more extensive, therefore, it is possible to fully send out
The high rigidity and high-wearing feature of itself is waved, and then improves the grinding performance of above-mentioned honing stone.
In the preferred embodiment of the present invention, the binding agent is wax-based binder, oil based binder or polyacetals
The mixing of one or more in based binder.
It is above-mentioned preferred embodiment in, wax-based binder is referred to wax as primary raw material, and mixed with organic additive
Close a kind of binding agent, with increase it is above-mentioned containing zirconic compound superhard honing stone surface smoothness, intensity and
The advantage of abrasion resistance；The primary raw material of the wax-based binder is preferably paraffin.
It is above-mentioned preferred embodiment in, oil based binder is referred to oil as primary raw material, and mixed with organic additive
A kind of binding agent for closing, with increase above-mentioned surface brightness, intensity containing zirconic compound superhard honing stone
With the advantage of abrasion resistance；The primary raw material of the oil based binder is preferably silicone oil.
It is above-mentioned preferred embodiment in, polyacetals based binder is referred to polyformaldehyde as primary raw material, and is added with organic
Plus a kind of binding agent that agent is mixed, with the above-mentioned surface-brightening containing zirconic compound superhard honing stone of increase
The advantage of degree, fineness, intensity and abrasion resistance.
It is above-mentioned preferred embodiment in, the binding agent can be the mixing of above-mentioned several adhesives, for example, oil plus
Wax-based binder is referred to wax and oil as primary raw material, and a kind of binding agent mixed with organic additive, with increase
The advantage of the above-mentioned surface brightness containing zirconic compound superhard honing stone, fineness, intensity and abrasion resistance；The oil
Plus the primary raw material of wax-based binder is preferably the mixing of paraffin and silicone oil.
In the preferred embodiment of the present invention, the superhard material is diamond, cubic boron nitride, carbonization
The mixing of one or more in boron or carborundum.
In the present invention, diamond is a kind of mineral being made up of pure carbon, is also material most hard in nature, artificial gold
The impurity content that hard rock is is fewer than natural diamond, and its hardness can exceed natural diamond, be highly suitable as resistance to
Mill material.
In the present invention, cubic boron nitride refers to the boron nitride of cubic structure, and its hardness exceedes diamond single crystal, is suitable as
Abrasive material.
In the present invention, boron carbide calls black diamond, with density is low, intensity big, high-temperature stability and chemical stability
The characteristics of good.
In the present invention, carborundum is (to need to add during production green silicon carbide with quartz sand, petroleum coke (or coal tar), wood chip
Salt) etc. raw material by resistance furnace pyrolytic semlting, stable chemical performance, thermal coefficient of expansion are little, anti-wear performance is good.
In above-mentioned preferred embodiment, the granularity of the superhard material is 80～1000 mesh.
In the present invention, the granularity of above-mentioned superhard material is 80～1000 mesh, and the particle diameter of corresponding superhard material is
180 μm -13 μm, the specific surface area of the superhard material of small particle is big, dividing in above-mentioned honing stone in the case of same volume
Cloth is more extensive, therefore, it is possible to give full play to the high rigidity and high-wearing feature of itself, and then improves the mill of above-mentioned honing stone
Cut performance.
According to an aspect of the present invention, a kind of preparation method containing zirconic compound superhard honing stone, including
Following steps：Each raw material is weighed by the above-mentioned percentage by weight containing zirconic compound superhard honing stone, each raw material is mixed
Uniform rear compacting is closed, then obtains described containing zirconic compound superhard honing stone to the mixture sintering after compacting.
In the present invention, the above-mentioned preparation method process is simple containing zirconic compound superhard honing stone only need to respectively
After raw material is well mixed, suppressed, be subsequently sintered and can be prepared by containing zirconic compound superhard honing stone.This
The bright preparation method containing zirconic compound superhard honing stone is simple, and preparation process step is few, and processing cost is low, it is not necessary to
Special equipment, it is short the time required to preparing.
In the preferred embodiment of the present invention, described being compressed to is suppressed under vacuum conditions, suppresses vacuum
Spend for 1 × 10-2～1 × 10-6Pa, press temperature be 400～600 DEG C, the press time be 5～12min, pressing pressure be 40～
120MPa。
In the present invention, the typical but non-limiting of above-mentioned vacuum is：1×10-2Pa、1×10-3Pa、1×10-4Pa、1
×10-5Pa or 1 × 10-6Pa；
In the present invention, the typical but non-limiting of above-mentioned press temperature is：550℃、560℃、570℃、580℃、590
℃、600℃、610℃、620℃、630℃、640℃、650℃、660℃、670℃、680℃、690℃、700℃、710℃、
720 DEG C, 730 DEG C, 740 DEG C, 750 DEG C, 760 DEG C, 770 DEG C, 780 DEG C, 790 DEG C or 800 DEG C.
In the present invention, the typical but non-limiting of above-mentioned press time is：4min, 5min, 6min, 7min or 8min.
In the present invention, the typical but non-limiting of above-mentioned pressing pressure is：40MPa、50MPa、60MPa、70MPa、
80MPa, 90MPa, 100MPa, 110MPa or 120MPa.
In above-mentioned preferred embodiment, carry out suppressing referring to a kind of pressure suppressed under vacuum conditions under vacuum conditions
Method processed, because compacting is the sizing of the material being completed in a relatively short time, it is easy to cause being involved in for gas and affect fixed
The quality of type part, and vacuum compacting can eliminate or reduce the pore inside shaped element so that the mechanical property and table of shaped element
Face quality is improved.
In the preferred embodiment of the present invention, the sintering temperature of the sintering is 550～800 DEG C, sintering time
For 5～12min.
According to an aspect of the present invention, a kind of application containing zirconic compound superhard honing stone, by the above-mentioned top gem of a girdle-pendant
Mill oilstone is widely used in the hole type parts finishing step of automobile mechanical, aviation machine, petroleum machinery and engineering machinery.
In the preferred embodiment of the present invention, above-mentioned honing stone is widely used in automobile mechanical, aviation machine
In the interior hole machined of tool, petroleum machinery and engineering machinery.
In the present invention, because this is ground sharp, grinding speed soon containing zirconic compound superhard honing stone, therefore
Have the advantages that high in machining efficiency and crudy is high in the interior hole machined of above-mentioned each gear.
Embodiment 1
One kind contains zirconic compound superhard honing stone, and the honing stone is mainly by the original of following percentage by weight
Material composition：Zirconium oxide 0.1%, copper 50%, silver 2%, aluminium 4%, zinc 2%, tin 7.9%, iron 8%, nickel 4%, cobalt 4%, lead 4%,
Paraffin 4% and diamond 10%.
Embodiment 2
One kind contains zirconic compound superhard honing stone, and the honing stone is mainly by the original of following percentage by weight
Material composition：Zirconium oxide 2%, copper 50%, silver 2%, aluminium 4%, zinc 2%, tin 8%, iron 8%, nickel 3%, cobalt 3%, lead 4%, poly- first
Aldehyde 4% and cubic boron nitride 10%.
Embodiment 3
One kind contains zirconic compound superhard honing stone, and the honing stone is mainly by the original of following percentage by weight
Material composition：Zirconium oxide 1%, copper 51%, silver 2%, aluminium 4%, zinc 2%, tin 8%, iron 8%, nickel 3%, cobalt 3%, lead 4%, silicone oil
4% and diamond 10%.
Embodiment 4
One kind contains zirconic compound superhard honing stone, and the honing stone is mainly by the original of following percentage by weight
Material composition：Zirconium oxide 1.5%, copper 50.5%, silver 2%, aluminium 4%, zinc 2%, tin 8%, iron 8%, nickel 3%, cobalt 3%, lead 4%,
Polyformaldehyde 4% and boron carbide 10%.
Embodiment 5
One kind contains zirconic compound superhard honing stone, and the honing stone is mainly by the original of following percentage by weight
Material composition：It is zirconium oxide 1%, copper 45%, silver 4%, aluminium 4%, zinc 2%, tin 10%, iron 10%, nickel 4%, cobalt 4%, lead 3%, viscous
Knot agent 3% and superhard material 10%.Wherein,
The binding agent is comprised the following raw materials by weight percent：Paraffin 20%, silicone oil 30% and polyformaldehyde 50%；
The superhard material is comprised the following raw materials by weight percent：Carborundum 30%, cubic boron nitride 50% and people
Make diamond 20%.
Embodiment 6
A kind of preparation method containing zirconic compound superhard honing stone, comprises the following steps：
(1), raw material mixing：The parts by weight containing zirconic compound superhard honing stone as described in embodiment 1 claim
Raw material is taken, is subsequently well mixed raw material；
(2), shaping compacting：The raw material that above-mentioned steps (1) are well mixed according to shaping needs, vacuum be 1 ×
10-2Suppressed under the vacuum environment of Pa, press temperature is 550 DEG C, and the press time is 4min, and pressing pressure is 45Mpa, be obtained
Compressing oilstone；
(3), prepared by sintering：The compressing oilstone of above-mentioned steps (2) is fired into 5min at 550 DEG C, is obtained containing oxidation
The compound superhard honing stone of zirconium.
Embodiment 7
A kind of preparation method containing zirconic compound superhard honing stone, comprises the following steps：
(1), raw material mixing：The parts by weight containing zirconic compound superhard honing stone as described in embodiment 2 claim
Raw material is taken, is subsequently well mixed raw material；
(2), shaping compacting：The raw material that above-mentioned steps (1) are well mixed according to shaping needs, vacuum be 1 ×
10-3Suppressed under the vacuum environment of Pa, press temperature is 600 DEG C, and the press time is 5min, and pressing pressure is 100Mpa, system
Obtain compressing oilstone；
(3), prepared by sintering：The compressing oilstone of above-mentioned steps (2) is fired into 6min at 700 DEG C, is obtained containing oxidation
The compound superhard honing stone of zirconium.
Embodiment 8
A kind of preparation method containing zirconic compound superhard honing stone, comprises the following steps：
(1), raw material mixing：The parts by weight containing zirconic compound superhard honing stone as described in embodiment 3 claim
Raw material is taken, is subsequently well mixed raw material；
(2), shaping compacting：The raw material that above-mentioned steps (1) are well mixed according to shaping needs, vacuum be 1 ×
10-6Suppressed under the vacuum environment of Pa, press temperature is 800 DEG C, and the press time is 8min, and pressing pressure is 120Mpa, system
Obtain compressing oilstone；
(3), prepared by sintering：The compressing oilstone of above-mentioned steps (2) is fired into 5min at 800 DEG C, is obtained containing oxidation
The compound superhard honing stone of zirconium.
Embodiment 9
A kind of preparation method containing zirconic compound superhard honing stone, comprises the following steps：
(1), raw material mixing：The parts by weight containing zirconic compound superhard honing stone as described in embodiment 4 claim
Raw material is taken, is subsequently well mixed raw material；
(2), shaping compacting：The raw material that above-mentioned steps (1) are well mixed according to shaping needs, vacuum be 1 ×
10-4Suppressed under the vacuum environment of Pa, press temperature is 720 DEG C, and the press time is 6min, and pressing pressure is 60Mpa, be obtained
Compressing oilstone；
(3), prepared by sintering：The compressing oilstone of above-mentioned steps (2) is fired into 10min at 720 DEG C, is obtained containing oxidation
The compound superhard honing stone of zirconium.
Embodiment 10
A kind of preparation method containing zirconic compound superhard honing stone, comprises the following steps：
(1), raw material mixing：The parts by weight containing zirconic compound superhard honing stone as described in embodiment 5 claim
Raw material is taken, is subsequently well mixed raw material；
(2), shaping compacting：The raw material that above-mentioned steps (1) are well mixed according to shaping needs, vacuum be 1 ×
10-4Suppressed under the vacuum environment of Pa, press temperature is 650 DEG C, and the press time is 6min, and pressing pressure is 80Mpa, be obtained
Compressing oilstone；
(3), prepared by sintering：The compressing oilstone of above-mentioned steps (2) is fired into 8min at 650 DEG C, is obtained containing oxidation
The compound superhard honing stone of zirconium.
Comparative example 1
A kind of honing stone, the honing stone is mainly comprised the following raw materials by weight percent：Copper 50%, silver 3%,
Aluminium 4%, zinc 3%, tin 7%, iron 9%, nickel 4%, cobalt 4%, lead 3%, paraffin 3% and diamond 10%.
The preparation method of above-mentioned honing stone, comprises the following steps：Weigh respectively by the percentage by weight of above-mentioned honing stone
Raw material, each raw material is suppressed under vacuum conditions after being well mixed, and compacting vacuum is 1 × 10-3Pa, press temperature is 500
DEG C, the press time is 8min, and pressing pressure is 80MPa, then fires 8min at 650 DEG C to the mixture after compacting, is obtained final product
To described honing stone.
Comparative example 2
The present embodiment provides following raw metal：The copper of 30wt%, the silver of 5wt%, the aluminium of 4%wt, the zinc of 3%wt,
The tin of 15%wt, the iron of 15wt%, the nickel of 6wt%, the cobalt of 10%wt, the lead of 5%wt.By copper, silver, aluminium, zinc, tin, cobalt, lead,
Binding agent and diamond add batch mixer to carry out batch mixing, and mould is filled this blend into after being sufficiently mixed carries out vacuum compacting,
Vacuum is 1x10-2～1x10-6Pa, press temperature is 550 DEG C, and the press time is 7 minutes, and pressing pressure is 60MPa；Will pressure
Mixture after system is sintered, and sintering temperature is 680 DEG C, and after being incubated 8 minutes hybrid super hard abrasive honing stone is obtained.
Comparative example 3
A kind of honing stone, the honing stone is mainly comprised the following raw materials by weight percent：Zirconium oxide 0.05%,
Copper 50%, silver 3%, aluminium 4%, zinc 3%, tin 7%, iron 9%, nickel 4%, cobalt 4%, lead 3%, paraffin 3% and diamond
10%.
The preparation method of above-mentioned honing stone, comprises the following steps：Weigh respectively by the percentage by weight of above-mentioned honing stone
Raw material, each raw material is suppressed under vacuum conditions after being well mixed, and compacting vacuum is 1 × 10-3Pa, press temperature is 500
DEG C, the press time is 8min, and pressing pressure is 80MPa, then fires 8min at 650 DEG C to the mixture after compacting, is obtained final product
To described honing stone.
Comparative example 4
One kind contains zirconic compound superhard honing stone, and the honing stone is mainly by the original of following percentage by weight
Material composition：Zirconium oxide 3%, copper 50%, silver 3%, aluminium 3%, zinc 3%, tin 6%, iron 8%, nickel 4%, cobalt 4%, lead 3%, paraffin
3% and diamond 10%.
The preparation method of above-mentioned honing stone, comprises the following steps：Weigh respectively by the percentage by weight of above-mentioned honing stone
Raw material, each raw material is suppressed under vacuum conditions after being well mixed, and compacting vacuum is 1 × 10-3Pa, press temperature is 500
DEG C, the press time is 8min, and pressing pressure is 80MPa, then fires 8min at 650 DEG C to the mixture after compacting, is obtained final product
To described honing stone.
Comparative example 5
The honing stone of commercially available domestic Shanghai Hongning Precise Machinery Co., Ltd.'s production.
Comparative example 6
The honing stone of commercially available import Germany BOSCH brands.
Effect example 1
To show the present invention containing zirconic compound superhard honing stone, compared to honing stone of the prior art tool
Have the advantages that self-sharpening is excellent, be ground that sharp, grinding quality is high, grinding speed is fast, high temperature resistant and long service life, selected from
The honing stone of inventive embodiments 6～10 and comparative example 1～6, respectively to quality, volume and hardness all same, thickness is 3 lis
The manganese steel of rice repeats 10 millimeters of cylindrical hole cutting honing punching test, to surface of the work finishing after honing efficiency, grinding
The continuously punched number for spending, reaching machining accuracy is counted, and statistics is as shown in table 1：
Table 1：Manganese steel is carried out 10 millimeters cylindrical hole cutting honing punching test statistics result it is as follows：
From above-mentioned table 1, the embodiment of the present invention 6～10 provide containing zirconic compound superhard honing stone with it is right
Ratio 1 is compared with comparative example 2 without zirconic compound superhard honing stone, the honing efficiency of oilstone described in comparative example 1 and 2
Only 0.02 millimeter/30 seconds, surface is jagged, and the continuously punched number for reaching machining accuracy is only 6000 or so, each side
Performance is significantly lower than the offer of the embodiment of the present invention 6～10 containing zirconic compound superhard honing stone；
Compare with honing stone of the comparative example 3 containing zirconium oxide 0.05% with honing stone of the comparative example 4 containing zirconium oxide 3%,
When zirconia content is less than 0.1% in the honing stone of comparative example 3, honing stone does not reach corresponding effect, and its honing efficiency is only
For 0.03 millimeter/30 seconds, the continuously punched number for reaching machining accuracy was only 8700 or so, was aoxidized in the honing stone of comparative example 4
When zirconium content is 3%, the effect for reaching is with the offer of the embodiment of the present invention 6～10 containing zirconic compound superhard honing stone
It is essentially identical.Therefore, for economical consideration, when zirconia content is 0.1～2% in honing stone of the present invention, the present invention
Honing stone can reach extraordinary effect, i.e. honing efficiency for 0.05 millimeter/30 seconds, and surface is smooth clean and tidy, and impulse- free robustness reaches
Continuously punched number to machining accuracy is 10000 or so.
Compared with the domestic honing stone of comparative example 5, the embodiment of the present invention 6～10 provide containing zirconic compound superhard
Honing stone its properties are superior to domestic honing stone.
Compared with the import honing stone of comparative example 6, the embodiment of the present invention 6～10 provide containing zirconic compound superhard
Honing stone has reached corresponding level in terms of manganese steel surface finish after honing efficiency, grinding, and in service life
Aspect, that is, the continuously punched number aspect for reaching machining accuracy is substantially better than the import honing stone of comparative example 6, honing oil of the present invention
After stone is average continuously punched 10000, corresponding machining accuracy can be still reached, and the import honing stone of comparative example 5 exists
After continuously punched 9000, that is, occur in that the inaccurate problem of machining accuracy.
Effect assessment
The above analysis understand, the present invention provide containing zirconic compound superhard honing stone, with prior art
In the honing stone that is made up of single abrasive material compare with the mixture of multi-elements formula honing stone of external import, it is sharp with being ground,
Grinding efficiency and quality are high, are ground the advantages of time is short, and long service life, self-sharpening are excellent, preparation is easy, honing stone of the present invention
After adding 0.1～2% zirconium oxide, due to zirconium oxide be added in metal have strong deoxidation, denitrogenate, the work of desulfuration
With, zirconium oxide is applied in honing stone of the present invention, can be very good to improve the hardness of honing stone of the present invention, intensity and resistance to
High temperature modification, the honing stone self-sharpening prepared is excellent, be ground that sharp, grinding quality is high, grinding speed is fast, not only gently but also high temperature resistant,
Further extend the service life of honing stone.
Finally it should be noted that：Various embodiments above only to illustrate technical scheme, rather than a limitation；To the greatest extent
Pipe has been described in detail with reference to foregoing embodiments to the present invention, it will be understood by those within the art that：Its according to
So the technical scheme described in foregoing embodiments can be modified, either which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, do not make the essence disengaging various embodiments of the present invention technology of appropriate technical solution
The scope of scheme.
Claims (10)
1. it is a kind of to contain zirconic compound superhard honing stone, it is characterised in that the honing stone is mainly by following weight
The raw material composition of percentage：Zirconium oxide 0.1～2%, copper 30～60%, silver 1～6%, aluminium 1～10%, zinc 1～6%, tin 5～
20%th, iron 5～20%, nickel 1～10%, cobalt 1～10%, lead 1～9%, binding agent 1～5% and superhard material 5%～20%,
The raw material weight percentage sum is equal to 100%.
2. it is according to claim 1 containing zirconic compound superhard honing stone, it is characterised in that the honing stone
Mainly comprise the following raw materials by weight percent：Zirconium oxide 0.5～1.5%, copper 35～50%, silver 2～5%, aluminium 2～8%,
Zinc 2～5%, tin 8～18%, iron 8～18%, nickel 2～8%, cobalt 2～8%, lead 2～7%, binding agent 2～4% and superhard material
Material 8%～18%, the raw material weight percentage sum is equal to 100%；
Preferably, the honing stone is mainly comprised the following raw materials by weight percent：Zirconium oxide 1%, copper 45%, silver 4%,
Aluminium 4%, zinc 2%, tin 10%, iron 10%, nickel 4%, cobalt 4%, lead 3%, binding agent 3% and superhard material 10%.
3. it is according to claim 1 and 2 containing zirconic compound superhard honing stone, it is characterised in that the raw material
Zirconium oxide, copper, silver, aluminium, zinc, tin, iron, nickel, cobalt and lead independently be purity more than or equal to 99% granularity be 80～
The particle of 1000 mesh.
4. it is according to claim 1 and 2 containing zirconic compound superhard honing stone, it is characterised in that the bonding
Agent is the mixing of one or more in wax-based binder, oil based binder or polyacetals based binder.
5. it is according to claim 1 and 2 containing zirconic compound superhard honing stone, it is characterised in that described superhard
Material is the mixing of one or more in diamond, cubic boron nitride, boron carbide or carborundum.
6. it is according to claim 5 containing zirconic compound superhard honing stone, it is characterised in that the superhard material
Granularity be 80～1000 mesh.
7. a kind of preparation method containing zirconic compound superhard honing stone according to any one of claim 1～6,
Characterized in that, comprising the following steps：
The percentage by weight containing zirconic compound superhard honing stone as described in any one of claim 1～6 is weighed respectively
Raw material, each raw material is suppressed after being well mixed, and then obtains described containing zirconic compound to the mixture sintering after compacting
Superhard honing stone.
8. the preparation method containing zirconic compound superhard honing stone according to claim 7, it is characterised in that institute
State to be compressed to and suppressed under vacuum conditions, compacting vacuum is 1 × 10-2～1 × 10-6Pa, press temperature is 400～600
DEG C, the press time is 5～12min, and pressing pressure is 40～120MPa.
9. the preparation method containing zirconic compound superhard honing stone according to claim 7, it is characterised in that institute
The sintering temperature for stating sintering is 550～800 DEG C, and sintering time is 5～12min.
10. a kind of application containing zirconic compound superhard honing stone, it is characterised in that by any one of claim 1～6
Described is applied to automobile mechanical, aviation machine, petroleum machinery and engineering machinery containing zirconic compound superhard honing stone
Hole type parts finishing step in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611222837.6A CN106625198B (en) | 2016-12-26 | 2016-12-26 | Compound superhard honing stone containing zirconium oxide and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611222837.6A CN106625198B (en) | 2016-12-26 | 2016-12-26 | Compound superhard honing stone containing zirconium oxide and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106625198A true CN106625198A (en) | 2017-05-10 |
| CN106625198B CN106625198B (en) | 2019-04-09 |
Family
ID=58831461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611222837.6A Active CN106625198B (en) | 2016-12-26 | 2016-12-26 | Compound superhard honing stone containing zirconium oxide and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106625198B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115546A (en) * | 2017-12-14 | 2018-06-05 | 苏州信能精密机械有限公司 | A kind of honing stone and its preparation method and application |
| CN111761524A (en) * | 2020-05-21 | 2020-10-13 | 郑州市钻石精密制造有限公司 | Honing strip and preparation method thereof |
| USRE48464E1 (en) | 2012-06-08 | 2021-03-16 | Celanese Sales Germany Gmbh | Process for producing acesulfame potassium |
| CN112873035A (en) * | 2021-03-09 | 2021-06-01 | 苏州航发航空零部件有限公司 | Special honing material for inner hole of precision valve sleeve of aircraft engine and honing processing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006249129A (en) * | 2005-03-08 | 2006-09-21 | Hitachi Chem Co Ltd | Method for producing polishing agent and polishing agent |
| CN101396799A (en) * | 2007-09-25 | 2009-04-01 | 阿罗斯有限责任公司 | Smoothing and/or lapping tool particularly for finishing stone materials |
| CN104400614A (en) * | 2014-11-20 | 2015-03-11 | 银川市恒益达机械有限公司 | Mixed ultra-hard abrasive honing stone |
| CN105524592A (en) * | 2015-07-16 | 2016-04-27 | 湖州华通研磨制造有限公司 | Grinding material |
-
2016
- 2016-12-26 CN CN201611222837.6A patent/CN106625198B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006249129A (en) * | 2005-03-08 | 2006-09-21 | Hitachi Chem Co Ltd | Method for producing polishing agent and polishing agent |
| CN101396799A (en) * | 2007-09-25 | 2009-04-01 | 阿罗斯有限责任公司 | Smoothing and/or lapping tool particularly for finishing stone materials |
| CN104400614A (en) * | 2014-11-20 | 2015-03-11 | 银川市恒益达机械有限公司 | Mixed ultra-hard abrasive honing stone |
| CN105524592A (en) * | 2015-07-16 | 2016-04-27 | 湖州华通研磨制造有限公司 | Grinding material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE48464E1 (en) | 2012-06-08 | 2021-03-16 | Celanese Sales Germany Gmbh | Process for producing acesulfame potassium |
| CN108115546A (en) * | 2017-12-14 | 2018-06-05 | 苏州信能精密机械有限公司 | A kind of honing stone and its preparation method and application |
| CN111761524A (en) * | 2020-05-21 | 2020-10-13 | 郑州市钻石精密制造有限公司 | Honing strip and preparation method thereof |
| CN112873035A (en) * | 2021-03-09 | 2021-06-01 | 苏州航发航空零部件有限公司 | Special honing material for inner hole of precision valve sleeve of aircraft engine and honing processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106625198B (en) | 2019-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108823478B (en) | Ultra-fine high-entropy alloy binding phase metal ceramic and preparation method thereof | |
| CN102703790B (en) | Cemented tungsten carbide alloy material with gradient cobalt content | |
| JP5732663B2 (en) | Cubic boron nitride sintered tool | |
| CN106625198B (en) | Compound superhard honing stone containing zirconium oxide and preparation method thereof | |
| CN101892411A (en) | Novel WC-based hard alloy material and preparation method thereof | |
| CN102606082A (en) | Diamond compact and manufacturing process for same | |
| CN104400614A (en) | Mixed ultra-hard abrasive honing stone | |
| US11179828B2 (en) | Additive raw material composition and additive for superhard material product, preparation method of the additive, composite binding agent and superhard material product, self-sharpening diamond grinding wheel and preparation method of the same | |
| CN102357657A (en) | Preparation method of superfine hard alloy blade for processing automobile aluminum alloy | |
| CN110408828B (en) | Artificial diamond drill bit material, drill bit and production process thereof | |
| CN106392907A (en) | Method for quickly preparing dense and superhard grinding and drilling tool based on self-propagating reaction | |
| CN106625197B (en) | Honing stone and preparation method thereof containing vanadium and zr element | |
| CN104128606A (en) | Method for manufacturing diamond saw blade | |
| CN109702188A (en) | A kind of diamond tool copper-based prealloy powder additive and preparation method thereof | |
| CN111266573B (en) | Preparation method of polycrystalline cubic boron nitride composite sheet | |
| CN106623902B (en) | The preparation method and applications of honing stone containing titanium elements | |
| CN106312048A (en) | Metal ceramic particle and preparation method and application thereof | |
| CN106737118A (en) | Honing stone, preparation method and applications containing yttrium | |
| CN115138849A (en) | Preparation method of binderless hard alloy cutter material | |
| CN103480668A (en) | Novel die core of wire drawing die | |
| CN111270120B (en) | Preparation method of diamond particle reinforced composite cutter material for cutting stone | |
| CN109972017B (en) | Cemented carbide tool material for high-speed cutting and method for manufacturing cemented carbide tool | |
| CN115255368B (en) | Diamond tool with soft and hard composite metal binding agent and preparation method thereof | |
| CN103480673A (en) | Method for manufacturing novel die core of wire drawing die | |
| CN113103159A (en) | Grinding wheel for machining hard materials and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |