CN106278334A - A kind of preparation method of anti-cold-punching mold material - Google Patents
A kind of preparation method of anti-cold-punching mold material Download PDFInfo
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- CN106278334A CN106278334A CN201610636471.0A CN201610636471A CN106278334A CN 106278334 A CN106278334 A CN 106278334A CN 201610636471 A CN201610636471 A CN 201610636471A CN 106278334 A CN106278334 A CN 106278334A
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- C04B35/803—
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3839—Refractory metal carbides
- C04B2235/3843—Titanium carbides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
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- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
The present invention relates to the preparation method of a kind of anti-cold-punching mold material, belong to mold materials preparing technical field.After first basalt and igneous rock ball are clayed into power by the present invention, it is heated, obtains mixed melting thing, it is drawn silk, obtain migmatite fiber, then by itself and ZrO2, the material such as TiC mixes, obtain inorganic mixture, and itself and 3 aminopropyl triethoxysilanes are carried out mixing and ball milling, collect ball-milled powder, carry out mixing with poly-vinyl alcohol solution by it again and pour, stand solidification, obtain standing solidifying substance, finally it is calcined, i.e. can obtain anti-cold-punching mold material.Anti-cold-punching mold material prepared by the present invention is excellent in cushion effect, and impact strength is higher than 85.95J/cm2, extend its service life；With basalt and igneous rock as primary raw material, required raw material obtains simple, and price is low.
Description
Technical field
The present invention relates to the preparation method of a kind of anti-cold-punching mold material, belong to mold materials preparing technical field.
Background technology
Mold materials refers to that China is currently used for the steel grade of plastic mould material, can by steel characteristics and use time heat at
Reason state classification.Mould for metal or the stamping-out of nonmetallic materials, stretch, bend, extrude, the operation such as upsetting is beaten.Mould steel is wanted
Ask enough intensity, toughness, hardness, abrasion-resistance, anti-fatigue ability, resistance to deformation, Resisting fractre ability.
When castings production, the quality of mould directly influences the quality of later stage foundry goods, and traditional with metal and pottery is
The mould that raw material is made is due to formula and technological problems, and the mould shock resistance degree produced is inadequate, causes the later stage casting
In part production process, beaten by other foundry goods equipment, collide and during other external impacts, often result in burn failure, make
Low with the life-span, aborning, once burn failure, if can not change in time, affect again manufacturing schedule, cause production efficiency
Lowly.
Summary of the invention
The technical problem to be solved: for the mold materials gone out for raw material production with metal and pottery in room temperature
Lower impact strength is inadequate, causes it fragile in castings production process, and problem that is that reduce its service life, the present invention is first
After basalt and igneous rock ball are clayed into power, it is heated, obtains mixed melting thing, it is drawn silk, mixed
Close rock fiber, then by itself and ZrO2, the material such as TiC mix, obtain inorganic mixture, and by itself and 3-aminopropyl three second
TMOS carries out mixing and ball milling, collects ball-milled powder, then carries out mixing with poly-vinyl alcohol solution by it and pour, stand solidification,
Obtain standing solidifying substance, finally it is calcined, i.e. can obtain anti-cold-punching mold material.Anti-cold-punching mold prepared by the present invention
Material is excellent in cushion effect, is difficult to damaged, extends its service life.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
(1) choose basalt and igneous rock, cleaned and naturally dry, the most in mass ratio 1:1, by the basalt that dries with
The igneous rock mixing dried crushes and is placed in ball grinder, and ball milling 2～3h under 250～300r/min obtain mixing and ball milling powder；
(2) the mixing and ball milling powder of above-mentioned preparation is placed in graphite crucible, graphite crucible is placed in vacuum tube furnace, at nitrogen
Under the conditions of gas shielded, it is forced into 5～10MPa, and is heated to 250～300 DEG C, after Heat preservation 10～15min, by 10
DEG C/min heat up be heated to 1550～1600 DEG C, Heat preservation 1～2h, be prepared into mixed melting thing；
(3) carry out drawing silk from the crucible place of leting slip a remark with Glass rod by mixed melting thing in graphite crucible, collect a diameter of 20～30 μm
Migmatite fiber, count the most by weight, respectively weigh 15～20 parts of ZrO2, 5～10 parts of TiC, 20～25 parts of Al2O3, 10
～the migmatite fibers that 15 parts of MgO and 15～20 parts are collected, it is placed in homogenizer, stirs under 3500～4000r/min
It is mixed with to obtain inorganic mixture；
(4) 1:5 in mass ratio, mixes 3-aminopropyl triethoxysilane with the inorganic mixture stirring of above-mentioned preparation and is placed in
In ball grinder, ball milling 3～5h under 250～300r/min, collect ball-milled powder, in mass ratio 1:3 subsequently, by mass concentration
25% poly-vinyl alcohol solution mixes with ball-milled powder stirring and pours to mould, at room temperature stands solidification 3～5h, is prepared into
Stand solidifying substance；
(5) the standing solidifying substance of above-mentioned preparation is placed in Heat preservation 1～2h at 120～130 DEG C, heats by 15 DEG C/min subsequently
It is warming up to 1100～1200 DEG C, after insulation calcining 2～3h, stops heating and naturally cool to room temperature, can be prepared into a kind of anti-
Cold-punching mold material.
The anti-cold-punching mold material fracture toughness of the preparation of the present invention reaches 12MPa m1/2Above, bending strength reaches
More than 1425MPa, hardness reaches more than 16Gpa, and impact strength is higher than 85.95J/cm2。
The present invention is compared with additive method, and Advantageous Effects is:
(1) the anti-cold-punching mold material that prepared by the present invention is excellent in cushion effect, and impact strength is higher than 85.95J/cm2, extend
Its service life；
(2) anti-cold-punching mold material prepared by the present invention is with basalt and igneous rock as primary raw material, and required raw material obtains
Simply, price is low.
Detailed description of the invention
First choose basalt and igneous rock, cleaned and naturally dry, the most in mass ratio 1:1, profound by dry
The igneous rock mixing that Wu Yanyu dries crushes and is placed in ball grinder, and ball milling 2～3h under 250～300r/min obtain mixing ball
Pulverizing end；The mixing and ball milling powder of above-mentioned preparation is placed in graphite crucible, graphite crucible is placed in vacuum tube furnace, at nitrogen
Under the conditions of gas shielded, it is forced into 5～10MPa, and is heated to 250～300 DEG C, after Heat preservation 10～15min, by 10
DEG C/min heat up be heated to 1550～1600 DEG C, Heat preservation 1～2h, be prepared into mixed melting thing；Again by mixed in graphite crucible
Close fused mass to carry out drawing silk from the crucible place of leting slip a remark with Glass rod, collect the migmatite fiber of a diameter of 20～30 μm, subsequently by weight
Amount number meter, weighs 15～20 parts of ZrO respectively2, 5～10 parts of TiC, 20～25 parts of Al2O3, 10～15 parts of MgO and 15～20 parts of receipts
The migmatite fiber of collection, is placed in homogenizer, and under 3500～4000r/min, stirring is mixed with to obtain inorganic mixture；
1:5 in mass ratio, mixes 3-aminopropyl triethoxysilane with the inorganic mixture stirring of above-mentioned preparation and is placed in ball grinder
In, ball milling 3～5h under 250～300r/min, collect ball-milled powder, in mass ratio 1:3 subsequently, by poly-for mass concentration 25% second
Enolate solution mixes with ball-milled powder stirring and pours to mould, at room temperature stands solidification 3～5h, is prepared into standing solidification
Material；Finally the standing solidifying substance of above-mentioned preparation is placed in Heat preservation 1～2h at 120～130 DEG C, heats by 15 DEG C/min subsequently
It is warming up to 1100～1200 DEG C, after insulation calcining 2～3h, stops heating and naturally cool to room temperature, can be prepared into a kind of anti-
Cold-punching mold material.
Example 1
First choose basalt and igneous rock, cleaned and naturally dry, the most in mass ratio 1:1, the basalt that will dry
Mix broken being placed in ball grinder, ball milling 3h under 300r/min with the igneous rock dried, obtain mixing and ball milling powder；By above-mentioned
The mixing and ball milling powder of preparation is placed in graphite crucible, is placed in vacuum tube furnace by graphite crucible, under nitrogen protective condition,
It is forced into 10MPa, and is heated to 300 DEG C, after Heat preservation 15min, heat up by 10 DEG C/min and be heated to 1600 DEG C, insulation
Heating 2h, is prepared into mixed melting thing；Carry out drawing silk from the crucible place of leting slip a remark with Glass rod by mixed melting thing in graphite crucible again,
Collect the migmatite fiber of a diameter of 30 μm, count the most by weight, weigh 20 parts of ZrO respectively2, 10 parts of TiC, 25 parts
Al2O3, 15 parts of MgO and 20 parts of migmatite fibers collected, it is placed in homogenizer, stirs under 4000r/min and be mixed with
Obtain inorganic mixture；1:5 in mass ratio, stirs 3-aminopropyl triethoxysilane with the inorganic mixture of above-mentioned preparation and mixes
It is placed in ball grinder, ball milling 5h under 300r/min, collects ball-milled powder, in mass ratio 1:3 subsequently, by mass concentration 25%
Poly-vinyl alcohol solution mixes with ball-milled powder stirring and pours to mould, at room temperature stands solidification 5h, is prepared into standing solid
Material；Finally the standing solidifying substance of above-mentioned preparation is placed in Heat preservation 2h at 130 DEG C, is heated to by 15 DEG C/min subsequently
1200 DEG C, after insulation calcining 3h, stop heating and naturally cool to room temperature, a kind of anti-cold-punching mold material can be prepared into.Warp
Detection, the anti-cold-punching mold material fracture toughness of the preparation of the present invention reaches 13MPa m1/2, bending strength reaches 1430MPa,
Hardness reaches 16.5Gpa, and impact strength is 86.95J/cm2。
Example 2
First choose basalt and igneous rock, cleaned and naturally dry, the most in mass ratio 1:1, the basalt that will dry
Mix broken being placed in ball grinder, ball milling 2h under 250r/min with the igneous rock dried, obtain mixing and ball milling powder；By above-mentioned
The mixing and ball milling powder of preparation is placed in graphite crucible, is placed in vacuum tube furnace by graphite crucible, under nitrogen protective condition,
It is forced into 5MPa, and is heated to 250 DEG C, after Heat preservation 10min, heat up by 10 DEG C/min and be heated to 1550 DEG C, insulation
Heating 1h, is prepared into mixed melting thing；Carry out drawing silk from the crucible place of leting slip a remark with Glass rod by mixed melting thing in graphite crucible again,
Collect the migmatite fiber of a diameter of 20 μm, count the most by weight, weigh 15 parts of ZrO respectively2, 5 parts of TiC, 20 parts of Al2O3,
10 parts of MgO and 15 parts of migmatite fibers collected, be placed in homogenizer, and under 3500r/min, stirring is mixed with to obtain nothing
Machine compound；1:5 in mass ratio, stirs 3-aminopropyl triethoxysilane with the inorganic mixture of above-mentioned preparation and mixes juxtaposition
In ball grinder, ball milling 3h under 250r/min, collects ball-milled powder, in mass ratio 1:3, subsequently by poly-for mass concentration 25% second
Enolate solution mixes with ball-milled powder stirring and pours to mould, at room temperature stands solidification 3h, is prepared into standing solidifying substance；
Finally the standing solidifying substance of above-mentioned preparation is placed in Heat preservation 1h at 120 DEG C, is heated to 1100 by 15 DEG C/min subsequently
DEG C, after insulation calcining 2h, stop heating and naturally cool to room temperature, a kind of anti-cold-punching mold material can be prepared into.After testing,
The anti-cold-punching mold material fracture toughness of the preparation of the present invention reaches 13.5MPa m1/2, bending strength reaches 1435MPa, hardness
Reaching 16.7Gpa, impact strength is 87.95J/cm2。
Example 3
First choose basalt and igneous rock, cleaned and naturally dry, the most in mass ratio 1:1, the basalt that will dry
Mix broken being placed in ball grinder, ball milling 2h under 270r/min with the igneous rock dried, obtain mixing and ball milling powder；By above-mentioned
The mixing and ball milling powder of preparation is placed in graphite crucible, is placed in vacuum tube furnace by graphite crucible, under nitrogen protective condition,
It is forced into 7MPa, and is heated to 270 DEG C, after Heat preservation 12min, heat up by 10 DEG C/min and be heated to 1650 DEG C, insulation
Heating 2h, is prepared into mixed melting thing；Carry out drawing silk from the crucible place of leting slip a remark with Glass rod by mixed melting thing in graphite crucible again,
Collect the migmatite fiber of a diameter of 25 μm, count the most by weight, weigh 17 parts of ZrO respectively2, 7 parts of TiC, 22 parts of Al2O3,
12 parts of MgO and 17 parts of migmatite fibers collected, be placed in homogenizer, and under 3700r/min, stirring is mixed with to obtain nothing
Machine compound；1:5 in mass ratio, stirs 3-aminopropyl triethoxysilane with the inorganic mixture of above-mentioned preparation and mixes juxtaposition
In ball grinder, ball milling 4h under 270r/min, collects ball-milled powder, in mass ratio 1:3, subsequently by poly-for mass concentration 25% second
Enolate solution mixes with ball-milled powder stirring and pours to mould, at room temperature stands solidification 4h, is prepared into standing solidifying substance；
Finally the standing solidifying substance of above-mentioned preparation is placed in Heat preservation 1h at 125 DEG C, is heated to 1150 by 15 DEG C/min subsequently
DEG C, after insulation calcining 2h, stop heating and naturally cool to room temperature, a kind of anti-cold-punching mold material can be prepared into.After testing,
The anti-cold-punching mold material fracture toughness of the preparation of the present invention reaches 13.6MPa m1/2, bending strength reaches 1440MPa, hardness
Reaching 16.7Gpa, impact strength is 87.95J/cm2。
Claims (1)
1. the preparation method of an anti-cold-punching mold material, it is characterised in that concrete preparation process is:
(1) choose basalt and igneous rock, cleaned and naturally dry, the most in mass ratio 1:1, by the basalt that dries with
The igneous rock mixing dried crushes and is placed in ball grinder, and ball milling 2～3h under 250～300r/min obtain mixing and ball milling powder；
(2) the mixing and ball milling powder of above-mentioned preparation is placed in graphite crucible, graphite crucible is placed in vacuum tube furnace, at nitrogen
Under the conditions of gas shielded, it is forced into 5～10MPa, and is heated to 250～300 DEG C, after Heat preservation 10～15min, by 10
DEG C/min heat up be heated to 1550～1600 DEG C, Heat preservation 1～2h, be prepared into mixed melting thing；
(3) carry out drawing silk from the crucible place of leting slip a remark with Glass rod by mixed melting thing in graphite crucible, collect a diameter of 20～30 μm
Migmatite fiber, count the most by weight, respectively weigh 15～20 parts of ZrO2, 5～10 parts of TiC, 20～25 parts of Al2O3, 10
～the migmatite fibers that 15 parts of MgO and 15～20 parts are collected, it is placed in homogenizer, stirs under 3500～4000r/min
It is mixed with to obtain inorganic mixture；
(4) 1:5 in mass ratio, mixes 3-aminopropyl triethoxysilane with the inorganic mixture stirring of above-mentioned preparation and is placed in
In ball grinder, ball milling 3～5h under 250～300r/min, collect ball-milled powder, in mass ratio 1:3 subsequently, by mass concentration
25% poly-vinyl alcohol solution mixes with ball-milled powder stirring and pours to mould, at room temperature stands solidification 3～5h, is prepared into
Stand solidifying substance；
(5) the standing solidifying substance of above-mentioned preparation is placed in Heat preservation 1～2h at 120～130 DEG C, heats by 15 DEG C/min subsequently
It is warming up to 1100～1200 DEG C, after insulation calcining 2～3h, stops heating and naturally cool to room temperature, can be prepared into a kind of anti-
Cold-punching mold material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610636471.0A CN106278334A (en) | 2016-08-05 | 2016-08-05 | A kind of preparation method of anti-cold-punching mold material |
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| CN201610636471.0A CN106278334A (en) | 2016-08-05 | 2016-08-05 | A kind of preparation method of anti-cold-punching mold material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747361A (en) * | 2017-01-23 | 2017-05-31 | 江苏顺通管业有限公司 | A kind of manufacture method of three-way valve mold |
| CN107841091A (en) * | 2017-11-03 | 2018-03-27 | 常州通和建筑工程有限公司 | A kind of preparation method of obdurability epoxy fill-sealing materials |
| CN108649023A (en) * | 2018-03-28 | 2018-10-12 | 宁波市鄞州路麦电子有限公司 | A kind of lead frame and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0294844A1 (en) * | 1987-06-11 | 1988-12-14 | Hitachi Metals, Ltd. | High toughness ZrO2 sintered body and method of producing same |
| CN101857438A (en) * | 2010-05-25 | 2010-10-13 | 山东大学 | Method for preparing aluminum oxide-titanium carbide-zirconium oxide nanocomposite ceramic material |
| CN104261804A (en) * | 2014-09-25 | 2015-01-07 | 昆山伯建精密模具有限公司 | Preparation method of ceramic mold |
-
2016
- 2016-08-05 CN CN201610636471.0A patent/CN106278334A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0294844A1 (en) * | 1987-06-11 | 1988-12-14 | Hitachi Metals, Ltd. | High toughness ZrO2 sintered body and method of producing same |
| CN101857438A (en) * | 2010-05-25 | 2010-10-13 | 山东大学 | Method for preparing aluminum oxide-titanium carbide-zirconium oxide nanocomposite ceramic material |
| CN104261804A (en) * | 2014-09-25 | 2015-01-07 | 昆山伯建精密模具有限公司 | Preparation method of ceramic mold |
Non-Patent Citations (2)
| Title |
|---|
| 赵诗奎 等: ""ZrO2-Al2O3-TiC纳微米复合陶瓷模具材料的研究"", 《硅酸盐通报》 * |
| 黄瑞琦: "《现代行业语词典（第1版）》", 31 December 2000, 海口：南海出版公司 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747361A (en) * | 2017-01-23 | 2017-05-31 | 江苏顺通管业有限公司 | A kind of manufacture method of three-way valve mold |
| CN106747361B (en) * | 2017-01-23 | 2020-05-26 | 江苏三水企业孵化器有限公司 | Manufacturing method of three-way die |
| CN107841091A (en) * | 2017-11-03 | 2018-03-27 | 常州通和建筑工程有限公司 | A kind of preparation method of obdurability epoxy fill-sealing materials |
| CN108649023A (en) * | 2018-03-28 | 2018-10-12 | 宁波市鄞州路麦电子有限公司 | A kind of lead frame and preparation method thereof |
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