CN111922346A - Feeding binder for Kowa alloy injection molding and preparation method thereof - Google Patents
Feeding binder for Kowa alloy injection molding and preparation method thereof Download PDFInfo
- Publication number
- CN111922346A CN111922346A CN202010762946.7A CN202010762946A CN111922346A CN 111922346 A CN111922346 A CN 111922346A CN 202010762946 A CN202010762946 A CN 202010762946A CN 111922346 A CN111922346 A CN 111922346A
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- China
- Prior art keywords
- parts
- kovar
- molecular polymer
- binder
- high molecular
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/227—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by organic binder assisted extrusion
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the field of metal forming, in particular to a feeding adhesive for Kovar injection molding and a preparation method thereof, which comprises the steps of mixing metal powder and the adhesive, wherein the mass fraction of the binder is 8-14%, the mass fraction of the metal powder is 86-92%, and the weight fractions are calculated, the binder comprises 12-21 parts of liquid paraffin, 69-87 parts of polyformaldehyde, 30-50 parts of high molecular polymer, 12-25 parts of microcrystalline wax, 2-9 parts of plasticizer, 0.4-5 parts of surfactant, 5 parts of lubricant, 16-26 parts of carnauba wax, 1-5 parts of compatilizer and 10-25 parts of naphthalene, the fluidity of the feed is good, the impurity content is low, the formed product can obtain high hardness and wear resistance, the preparation method has the advantages of good process realizability, stable quality, simple and convenient operation of the preparation method and good use effect of the feeding material when the required hardness is achieved.
Description
Technical Field
The invention relates to the field of metal forming, in particular to a feeding binder for Kovar injection molding and a preparation method thereof.
Background
The kovar alloy is a fixed expansion alloy containing 29% nickel, 17% cobalt, and 54% iron. Its average coefficient of thermal expansion is close to that of borate glass below 500 ℃. It is mainly used as sealing material for electric vacuum and semiconductor element. Injection molding is a process in which plastic melted by an injection machine enters a mold under the thrust action of a plunger or a screw, and a product is obtained after cooling. The plastic is plasticized in a heating cylinder of an injection molding machine and then injected into a mold cavity of a closed mold by a plunger or a reciprocating screw to form a product. The method can process products with complex shapes, accurate sizes or with inserts, and has high production efficiency.
Metal injection molding typically includes the steps of feedstock preparation, injection molding, degreasing, and sintering. The preparation of the feedstock is an important part, and the feedstock is usually formed by kneading metal powder and a binder, wherein the component composition of the binder is particularly critical, and directly influences the procedures of mixing, injection molding, degreasing and the like, and has great influence on the quality, degreasing, dimensional accuracy, alloy components and the like of an injection molding blank. At present, in the use process, the adhesive has poor fluidity and strength and cannot be removed in the subsequent process, so that the quality and the composition of a final product are influenced, the quality is reduced, and the use is inconvenient.
Disclosure of Invention
The invention aims to: in view of the above-mentioned problems of the prior art, the present invention provides a feeding binder for kovar injection molding and a method for preparing the same.
A feed binder for injection molding of kovar, characterized by: the adhesive is prepared by mixing 8-14% of metal powder and 86-92% of adhesive, wherein the adhesive comprises 12-21 parts of liquid paraffin, 69-87 parts of polyformaldehyde, 30-50 parts of high polymer, 12-25 parts of microcrystalline wax, 2-9 parts of plasticizer, 0.4-5 parts of surfactant, 5 parts of lubricant, 16-26 parts of carnauba wax, 1-5 parts of compatilizer and 10-25 parts of naphthalene.
The high molecular polymer comprises 13-28 parts by weight of a first high molecular polymer and 15-22 parts by weight of a second high molecular polymer.
The high molecular polymer is at least one of polyethylene, polypropylene, polyacrylate, acrylonitrile-butadiene-styrene copolymer and random copolymer polyethylene.
Wherein the first high molecular polymer and the second high molecular polymer are selected from any two of polyethylene, polypropylene, polyacrylate, acrylonitrile-butadiene-styrene copolymer and random copolymerization polyethylene.
The feeding adhesive for the injection molding of the kovar alloy is characterized in that the plasticizer is at least one of dioctyl phthalate and dibutyl phthalate.
The feeding adhesive for the Kovar alloy injection molding is characterized in that the surfactant is any one of stearic acid, oleic acid, calcium stearate, magnesium stearate and zinc stearate.
Wherein, the lubricant is at least one of paraffin and peanut oil.
The feeding adhesive for the Kovar injection molding is any one of ethylene-vinyl acetate copolymer and ethylene acrylic acid copolymer.
A preparation method of a feeding binder for Kovar injection molding comprises the following steps:
(1) the adhesive is prepared by uniformly mixing the liquid paraffin, polyformaldehyde, high-molecular polymer, microcrystalline wax, plasticizer, surfactant, lubricant, carnauba wax, compatilizer and naphthalene at 140-200 ℃.
(2) Adding the metal powder into an internal mixer for stirring and heating, heating the metal powder to 190-200 ℃, adding the binder according to the proportion, mixing at the mixing temperature of 180-200 ℃, and finally extruding and granulating.
Based on the above explanation, compared with the prior art, the invention has the beneficial effects that:
the feeding of the invention can ensure that the feeding is uniformly distributed, the operation is convenient, the fluidity is good, the adhesive is easy to remove, the obtained product has high dimensional precision and less impurity content, the formed product can obtain high hardness and wear resistance, the strength, hardness, wear resistance and hardenability of the product are improved, the product still has good process realizability and stable quality when reaching the required hardness, the preparation method of the invention has simple and convenient operation, can efficiently obtain uniform feeding without damaging various components in the feeding, the use effect of the feeding is well ensured, and the manufacturing cost is optimized while the product quality is ensured.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description of the present invention is provided with reference to specific embodiments.
The feeding binder for the injection molding of the kovar alloy comprises 8-14% by mass of a binder and 86-92% by mass of metal powder, and comprises 12-21 parts by weight of liquid paraffin, 69-87 parts by weight of polyformaldehyde, 30-50 parts by weight of a high molecular polymer, 12-25 parts by weight of microcrystalline wax, 2-9 parts by weight of a plasticizer, 0.4-5 parts by weight of a surfactant, 5 parts by weight of a lubricant, 16-26 parts by weight of carnauba wax, 1-5 parts by weight of a compatilizer and 10-25 parts by weight of naphthalene.
The high molecular polymer comprises 13-28 parts by weight of a first high molecular polymer and 15-22 parts by weight of a second high molecular polymer.
The high molecular polymer is at least one of polyethylene, polypropylene, polyacrylate, acrylonitrile-butadiene-styrene copolymer and random copolymerization polyethylene.
The first high molecular polymer and the second high molecular polymer are selected from any two of polyethylene, polypropylene, polyacrylate, acrylonitrile-butadiene-styrene copolymer and random copolymerization polyethylene.
The plasticizer is at least one of dioctyl phthalate and dibutyl phthalate.
The surfactant is any one of stearic acid, oleic acid, calcium stearate, magnesium stearate and zinc stearate.
The lubricant is at least one of paraffin and peanut oil.
The compatilizer is any one of ethylene-vinyl acetate copolymer and ethylene acrylic acid copolymer.
A preparation method of a feeding binder for Kovar injection molding comprises the following steps:
(1) the adhesive is prepared by uniformly mixing the liquid paraffin, polyformaldehyde, high-molecular polymer, microcrystalline wax, plasticizer, surfactant, lubricant, carnauba wax, compatilizer and naphthalene at 140-200 ℃.
(2) Adding the metal powder into an internal mixer for stirring and heating, heating the metal powder to 190-200 ℃, adding the binder according to the proportion, mixing at the mixing temperature of 180-200 ℃, and finally extruding and granulating.
Example 1
The feeding binder for the Kovar injection molding comprises 8% of metal powder and 92% of binder, and comprises 12 parts of liquid paraffin, 69 parts of polyformaldehyde, 30 parts of high polymer, 12 parts of microcrystalline wax, 2 parts of plasticizer, 0.4 part of surfactant, 5 parts of lubricant, 16 parts of carnauba wax, 1 part of compatilizer and 10 parts of naphthalene in parts by weight.
The high molecular polymer comprises 13 parts by weight of a first high molecular polymer and 15 parts by weight of a second high molecular polymer.
The high molecular polymer is at least one of polyethylene, polypropylene, polyacrylate, acrylonitrile-butadiene-styrene copolymer and random copolymerization polyethylene.
The first high molecular polymer and the second high molecular polymer are selected from any two of polyethylene, polypropylene, polyacrylate, acrylonitrile-butadiene-styrene copolymer and random copolymerization polyethylene.
The plasticizer is at least one of dioctyl phthalate and dibutyl phthalate.
The surfactant is any one of stearic acid, oleic acid, calcium stearate, magnesium stearate and zinc stearate.
The lubricant is at least one of paraffin and peanut oil.
The compatilizer is any one of ethylene-vinyl acetate copolymer and ethylene acrylic acid copolymer.
A preparation method of a feeding binder for Kovar injection molding comprises the following steps:
(1) the adhesive is prepared by uniformly mixing 140 parts of liquid paraffin, polyformaldehyde, high-molecular polymer, microcrystalline wax, a plasticizer, a surfactant, a lubricant, carnauba wax, a compatilizer and naphthalene.
(2) Adding the metal powder into an internal mixer for stirring and heating, heating the metal powder to 190-200 ℃, adding the binder according to the proportion, mixing at the mixing temperature of 180 ℃, and finally extruding and granulating.
Example 2
The feeding binder for the Kovar injection molding comprises 14% of metal powder and 86% of binder, and comprises 21 parts of liquid paraffin, 87 parts of polyformaldehyde, 50 parts of high-molecular polymer, 25 parts of microcrystalline wax, 9 parts of plasticizer, 5 parts of surfactant, 5 parts of lubricant, 26 parts of carnauba wax, 5 parts of compatilizer and 25 parts of naphthalene in parts by weight.
The high molecular polymer comprises 28 parts by weight of a first high molecular polymer and 22 parts by weight of a second high molecular polymer.
The high molecular polymer is at least one of polyethylene, polypropylene, polyacrylate, acrylonitrile-butadiene-styrene copolymer and random copolymerization polyethylene.
The first high molecular polymer and the second high molecular polymer are selected from any two of polyethylene, polypropylene, polyacrylate, acrylonitrile-butadiene-styrene copolymer and random copolymerization polyethylene.
The plasticizer is at least one of dioctyl phthalate and dibutyl phthalate.
The surfactant is any one of stearic acid, oleic acid, calcium stearate, magnesium stearate and zinc stearate.
The lubricant is at least one of paraffin and peanut oil.
The compatilizer is any one of ethylene-vinyl acetate copolymer and ethylene acrylic acid copolymer.
A preparation method of a feeding binder for Kovar injection molding comprises the following steps:
(1) the adhesive is prepared by uniformly mixing the liquid paraffin, polyformaldehyde, high molecular polymer, microcrystalline wax, plasticizer, surfactant, lubricant, carnauba wax, compatilizer and naphthalene at 200 ℃.
(2) Adding the metal powder into an internal mixer for stirring and heating, heating the metal powder to 190-200 ℃, adding the binder according to the proportion, mixing at the mixing temperature of 200 ℃, and finally extruding and granulating.
Claims (9)
1. A feed binder for injection molding of kovar, characterized by: the adhesive is prepared by mixing 8-14% of metal powder and 86-92% of adhesive, wherein the adhesive comprises 12-21 parts of liquid paraffin, 69-87 parts of polyformaldehyde, 30-50 parts of high polymer, 12-25 parts of microcrystalline wax, 2-9 parts of plasticizer, 0.4-5 parts of surfactant, 5 parts of lubricant, 16-26 parts of carnauba wax, 1-5 parts of compatilizer and 10-25 parts of naphthalene.
2. A feed binder for kovar injection moulding according to claim 1, wherein: the high molecular polymer comprises 13-28 parts by weight of a first high molecular polymer and 15-22 parts by weight of a second high molecular polymer.
3. A feed binder for kovar injection moulding according to claim 2, wherein: the high molecular polymer is at least one of polyethylene, polypropylene, polyacrylate, acrylonitrile-butadiene-styrene copolymer and random copolymerization polyethylene.
4. A feed binder for kovar injection moulding according to claim 3, wherein: the first high molecular polymer and the second high molecular polymer are selected from any two of polyethylene, polypropylene, polyacrylate, acrylonitrile-butadiene-styrene copolymer and random copolymerization polyethylene.
5. A feed binder for kovar injection moulding according to claim 1, wherein: the plasticizer is at least one of dioctyl phthalate and dibutyl phthalate.
6. A feed binder for kovar injection moulding according to claim 1, wherein: the surfactant is any one of stearic acid, oleic acid, calcium stearate, magnesium stearate and zinc stearate.
7. A feed binder for kovar injection moulding according to claim 1, wherein: the lubricant is at least one of paraffin and peanut oil.
8. A feed binder for kovar injection moulding according to claim 1, wherein: the compatilizer is any one of ethylene-vinyl acetate copolymer and ethylene acrylic acid copolymer.
9. A feeding binder for Kovar injection moulding according to any of claims 1 to 8, wherein: the preparation method of the feeding adhesive for the Kovar injection molding comprises the following steps:
(1) the adhesive is prepared by uniformly mixing the liquid paraffin, polyformaldehyde, high-molecular polymer, microcrystalline wax, plasticizer, surfactant, lubricant, carnauba wax, compatilizer and naphthalene at 140-200 ℃.
(2) Adding the metal powder into an internal mixer for stirring and heating, heating the metal powder to 190-200 ℃, adding the binder according to the proportion, mixing at the mixing temperature of 180-200 ℃, and finally extruding and granulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010762946.7A CN111922346A (en) | 2020-07-31 | 2020-07-31 | Feeding binder for Kowa alloy injection molding and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010762946.7A CN111922346A (en) | 2020-07-31 | 2020-07-31 | Feeding binder for Kowa alloy injection molding and preparation method thereof |
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| CN111922346A true CN111922346A (en) | 2020-11-13 |
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| CN202010762946.7A Pending CN111922346A (en) | 2020-07-31 | 2020-07-31 | Feeding binder for Kowa alloy injection molding and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115772031A (en) * | 2022-09-23 | 2023-03-10 | 深圳艾利门特科技有限公司 | Preparation method of manganese-zinc ferrite magnetic separation piece |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921752A (en) * | 2016-04-07 | 2016-09-07 | 惠州威博精密科技有限公司 | Method for preparing invar alloy resonance bar |
| CN106270522A (en) * | 2016-09-23 | 2017-01-04 | 江西悦安超细金属有限公司 | A kind of for metal injection molded feeding and preparation method thereof |
| CN107584110A (en) * | 2017-08-14 | 2018-01-16 | 东莞华晶粉末冶金有限公司 | A kind of aluminium alloy cerul MIM feedings and preparation method thereof |
| CN108620574A (en) * | 2017-03-24 | 2018-10-09 | 东莞华晶粉末冶金有限公司 | Forming agent, feeding and preparation method thereof, green body and preparation method thereof |
| CN108655405A (en) * | 2018-05-25 | 2018-10-16 | 合肥汇智新材料科技有限公司 | A kind of injection moulding technological process of production |
| CN110270684A (en) * | 2019-07-30 | 2019-09-24 | 深圳市联星服装辅料有限公司 | A kind of forming agent of metallic particles tooth, metallic particles tooth, preparation method and metal zip fastener |
| CN110385428A (en) * | 2019-08-05 | 2019-10-29 | 杭州铭赫科技有限公司 | A kind of high fluidity powdered metallurgical material and preparation method thereof |
-
2020
- 2020-07-31 CN CN202010762946.7A patent/CN111922346A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921752A (en) * | 2016-04-07 | 2016-09-07 | 惠州威博精密科技有限公司 | Method for preparing invar alloy resonance bar |
| CN106270522A (en) * | 2016-09-23 | 2017-01-04 | 江西悦安超细金属有限公司 | A kind of for metal injection molded feeding and preparation method thereof |
| CN108620574A (en) * | 2017-03-24 | 2018-10-09 | 东莞华晶粉末冶金有限公司 | Forming agent, feeding and preparation method thereof, green body and preparation method thereof |
| CN107584110A (en) * | 2017-08-14 | 2018-01-16 | 东莞华晶粉末冶金有限公司 | A kind of aluminium alloy cerul MIM feedings and preparation method thereof |
| CN108655405A (en) * | 2018-05-25 | 2018-10-16 | 合肥汇智新材料科技有限公司 | A kind of injection moulding technological process of production |
| CN110270684A (en) * | 2019-07-30 | 2019-09-24 | 深圳市联星服装辅料有限公司 | A kind of forming agent of metallic particles tooth, metallic particles tooth, preparation method and metal zip fastener |
| CN110385428A (en) * | 2019-08-05 | 2019-10-29 | 杭州铭赫科技有限公司 | A kind of high fluidity powdered metallurgical material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115772031A (en) * | 2022-09-23 | 2023-03-10 | 深圳艾利门特科技有限公司 | Preparation method of manganese-zinc ferrite magnetic separation piece |
| CN115772031B (en) * | 2022-09-23 | 2024-01-16 | 深圳艾利门特科技有限公司 | Preparation method of manganese zinc ferrite magnetic spacer |
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Application publication date: 20201113 |