CN108467770A - A kind of quick drawing wire drawing liquid of copper wire - Google Patents
A kind of quick drawing wire drawing liquid of copper wire Download PDFInfo
- Publication number
- CN108467770A CN108467770A CN201810436841.5A CN201810436841A CN108467770A CN 108467770 A CN108467770 A CN 108467770A CN 201810436841 A CN201810436841 A CN 201810436841A CN 108467770 A CN108467770 A CN 108467770A
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- parts
- agent
- mineral oil
- wire
- drawing liquid
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-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/16—Paraffin waxes; Petrolatum, e.g. slack wax
- C10M2205/163—Paraffin waxes; Petrolatum, e.g. slack wax used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/285—Esters of aromatic polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/04—Detergent property or dispersant property
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/18—Anti-foaming property
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a kind of quick drawing wire drawing liquids of copper wire, it is made of 20 24 parts of complex calcium sulfonate grease, 15 18 parts of trimethylolpropane tris oleate, 25 35 parts of refined mineral oil, 20 25 parts of trimellitate, 48 parts of fatty alcohol polyoxyethylene ether, 10 20 parts of surfactant by weight the following raw material, 10 20 parts of antirust agent, 68 parts of builder, 68 parts of cleaning agent, 68 parts of preservative, 48 parts of mould inhibitor, 37 parts of cosolvent, 37 parts of fungicide, 26 parts of antioxidant, 12 parts of anti-foaming agent.Wire drawing liquid environment-friendly high-efficiency prepared by the present invention, service life are long, have greatly saved production cost, and the wire surface obtained using wire drawing liquid of the present invention is bright and clean complete, is not easy oxidizing blackening, and broken string is few.
Description
Technical field
The present invention relates to a kind of wire drawing liquid, specifically a kind of quick drawing wire drawing liquid of copper wire.
Background technology
Drawing process is a kind of metal working process, refers to that metal wire rod is forced through mold under pressure, is obtained
The technology processing method of required sectional area shape and size, and wire drawing liquid is then essential auxiliary in drawing process
Agent, its main effect are in wire drawings, bracing wire technical process such as a variety of copper wires, the middle drawing of a variety of wire rods of aluminium wire, small drawing, fine drawings
In play lubricating action, have both protection wire rod, mold, reach good wire-drawing effect, the quality of wire drawing liquid directly influences wire drawing
Effect, the wire drawing liquid of function admirable can be very good protection mold, reduce wire rod broken end, die wear phenomenon, have both antirust, cold
But the effects that, cleaning, conversely, can then seriously affect wire drawing quality；Gradually extensive with the application of drawing process, market is to wire drawing
The quality requirements of liquid are higher and higher, and existing wire drawing liquid is primarily present poor stability of emulsion, corrosion metal wire rod, high energy consumption, no
The problems such as easy cleaning, restricts wire drawing, drawing quality, needs to improve its formula and technique, makes its highly efficient environmental protection.
Invention content
The present invention provides a kind of quick drawing wire drawing liquids of copper wire, to solve the above technical problems.
A kind of quick drawing wire drawing liquid of copper wire, is made of by weight the following raw material：Complex calcium sulfonate grease 20-
24 parts, 15-18 parts of trimethylolpropane tris oleate, 25-35 parts of refined mineral oil, 20-25 parts of trimellitate, poly alkyl alcohol
4-8 parts of ethylene oxide ether, 10-20 parts of surfactant, 10-20 parts of antirust agent, 6-8 parts of builder, 6-8 parts of cleaning agent, preservative
6-8 parts, 4-8 parts of mould inhibitor, 3-7 parts of cosolvent, 3-7 parts of fungicide, 2-6 parts of antioxidant, 1-2 parts of anti-foaming agent.
Preferably, the quick drawing wire drawing liquid of the copper wire is made of by weight the following raw material：Composite calcium-sulfonate-batetrapolyurea
20 parts of lubricating grease, 15 parts of trimethylolpropane tris oleate, 25 parts of refined mineral oil, 20 parts of trimellitate, fatty alcohol polyoxy
4 parts of vinethene, 10 parts of surfactant, 10 parts of antirust agent, 6 parts of builder, 6 parts of cleaning agent, 6 parts of preservative, 4 parts of mould inhibitor,
3 parts of cosolvent, 3 parts of fungicide, 2- parts of antioxidant, 1 part of anti-foaming agent.
Preferably, the quick drawing wire drawing liquid of the copper wire is made of by weight the following raw material：Composite calcium-sulfonate-batetrapolyurea
22 parts of lubricating grease, 16.5 parts of trimethylolpropane tris oleate, 30 parts of refined mineral oil, 22.5 parts of trimellitate, fatty alcohol
6 parts of polyoxyethylene ether, 15 parts of surfactant, 15 parts of antirust agent, 7 parts of builder, 7 parts of cleaning agent, 7 parts of preservative, mould inhibitor 6
Part, 5 parts of cosolvent, 5 parts of fungicide, 4 parts of antioxidant, 1.5 parts of anti-foaming agent.
Preferably, the quick drawing wire drawing liquid of the copper wire is made of by weight the following raw material：Composite calcium-sulfonate-batetrapolyurea
24 parts of lubricating grease, 18 parts of trimethylolpropane tris oleate, 35 parts of refined mineral oil, 25 parts of trimellitate, fatty alcohol polyoxy
8 parts of vinethene, 20 parts of surfactant, 20 parts of antirust agent, 8 parts of builder, 8 parts of cleaning agent, 8 parts of preservative, 8 parts of mould inhibitor,
7 parts of cosolvent, 7 parts of fungicide, 6 parts of antioxidant, 2 parts of anti-foaming agent.
Preferably, the refined mineral oil is isoviscous paraffin base oil.
Preferably, the refined mineral oil further includes lubricity accelerating agent, gasification inhibitor and extreme pressure agent.
Beneficial effects of the present invention：
The beneficial effects of the invention are as follows：The emulsion-stabilizing performance of the quick drawing wire drawing liquid of copper wire of the present invention is strong, uses
It is not easy to be destroyed by miscellaneous oil in the process；Lubrication and anti-extreme pressure can be outstanding；With good rustless property, equipment components are protected
And mold is not easy corrosion；With good cleaning and performance of flushing, copper scale copper ash is taken in help out of, keeps mold oil piping system
Cleaning and health；With low ratio foamed foam performance and good defoaming function, and the present invention prepare wire drawing liquid environment-friendly high-efficiency, use
Long lifespan has greatly saved production cost, and the wire surface obtained using wire drawing liquid of the present invention is bright and clean complete, not oxidizable hair
Black, broken string is few.
Specific implementation mode
The embodiment of the present invention is described in detail below, but what the present invention can be defined by the claims and cover
Multitude of different ways is implemented.
Below by way of specific embodiment, the present invention will be described in detail.
Embodiment 1
A kind of quick drawing wire drawing liquid of copper wire, is made of by weight the following raw material：Complex calcium sulfonate grease 20
Part, 15 parts of trimethylolpropane tris oleate, 25 parts of refined mineral oil, 20 parts of trimellitate, fatty alcohol polyoxyethylene ether 4
Part, 10 parts of surfactant, 10 parts of antirust agent, 6 parts of builder, 6 parts of cleaning agent, 6 parts of preservative, 4 parts of mould inhibitor, cosolvent 3
Part, 3 parts of fungicide, 2- parts of antioxidant, 1 part of anti-foaming agent.
Above-mentioned refined mineral oil is isoviscous paraffin base oil.
Above-mentioned refined mineral oil further includes lubricity accelerating agent, gasification inhibitor and extreme pressure agent.
Embodiment 2
A kind of quick drawing wire drawing liquid of copper wire, is made of by weight the following raw material：Complex calcium sulfonate grease 22
Part, 16.5 parts of trimethylolpropane tris oleate, 30 parts of refined mineral oil, 22.5 parts of trimellitate, aliphatic alcohol polyethenoxy
6 parts of ether, 15 parts of surfactant, 15 parts of antirust agent, 7 parts of builder, 7 parts of cleaning agent, 7 parts of preservative, 6 parts of mould inhibitor, hydrotropy
5 parts of agent, 5 parts of fungicide, 4 parts of antioxidant, 1.5 parts of anti-foaming agent.
Above-mentioned refined mineral oil is isoviscous paraffin base oil.
Above-mentioned refined mineral oil further includes lubricity accelerating agent, gasification inhibitor and extreme pressure agent.
Embodiment 3
A kind of quick drawing wire drawing liquid of copper wire, is made of by weight the following raw material：Complex calcium sulfonate grease 24
Part, 18 parts of trimethylolpropane tris oleate, 35 parts of refined mineral oil, 25 parts of trimellitate, fatty alcohol polyoxyethylene ether 8
Part, 20 parts of surfactant, 20 parts of antirust agent, 8 parts of builder, 8 parts of cleaning agent, 8 parts of preservative, 8 parts of mould inhibitor, cosolvent 7
Part, 7 parts of fungicide, 6 parts of antioxidant, 2 parts of anti-foaming agent.
Above-mentioned refined mineral oil is isoviscous paraffin base oil.
Above-mentioned refined mineral oil further includes lubricity accelerating agent, gasification inhibitor and extreme pressure agent.
The embodiments of the present invention described above are not intended to limit the scope of the present invention, any in the present invention
Spirit and principle within made by modifications, equivalent substitutions and improvements etc., should be included in the claim protection model of the present invention
Within enclosing.
Claims (6)
1. a kind of quick drawing wire drawing liquid of copper wire, which is characterized in that be made of by weight the following raw material：Composite calcium-sulfonate-batetrapolyurea
20-24 parts of lubricating grease, 15-18 parts of trimethylolpropane tris oleate, 25-35 parts of refined mineral oil, trimellitate 20-25
Part, 4-8 parts of fatty alcohol polyoxyethylene ether, 10-20 parts of surfactant, 10-20 parts of antirust agent, 6-8 parts of builder, cleaning agent 6-
8 parts, 6-8 parts of preservative, 4-8 parts of mould inhibitor, 3-7 parts of cosolvent, 3-7 parts of fungicide, 2-6 parts of antioxidant, anti-foaming agent 1-2
Part.
2. the quick drawing wire drawing liquid of copper wire according to claim 1, which is characterized in that by the following raw material group by weight
At：20 parts of complex calcium sulfonate grease, 15 parts of trimethylolpropane tris oleate, 25 parts of refined mineral oil, trimellitate
20 parts, 4 parts of fatty alcohol polyoxyethylene ether, 10 parts of surfactant, 10 parts of antirust agent, 6 parts of builder, 6 parts of cleaning agent, preservative
6 parts, 4 parts of mould inhibitor, 3 parts of cosolvent, 3 parts of fungicide, 2- parts of antioxidant, 1 part of anti-foaming agent.
3. the quick drawing wire drawing liquid of copper wire according to claim 1, which is characterized in that by the following raw material group by weight
At：22 parts of complex calcium sulfonate grease, 16.5 parts of trimethylolpropane tris oleate, 30 parts of refined mineral oil, trimellitic acid
22.5 parts of ester, 6 parts of fatty alcohol polyoxyethylene ether, 15 parts of surfactant, 15 parts of antirust agent, 7 parts of builder, are prevented 7 parts of cleaning agent
7 parts of rotten agent, 6 parts of mould inhibitor, 5 parts of cosolvent, 5 parts of fungicide, 4 parts of antioxidant, 1.5 parts of anti-foaming agent.
4. the quick drawing wire drawing liquid of copper wire according to claim 1, which is characterized in that by the following raw material group by weight
At：24 parts of complex calcium sulfonate grease, 18 parts of trimethylolpropane tris oleate, 35 parts of refined mineral oil, trimellitate
25 parts, 8 parts of fatty alcohol polyoxyethylene ether, 20 parts of surfactant, 20 parts of antirust agent, 8 parts of builder, 8 parts of cleaning agent, preservative
8 parts, 8 parts of mould inhibitor, 7 parts of cosolvent, 7 parts of fungicide, 6 parts of antioxidant, 2 parts of anti-foaming agent.
5. the quick drawing wire drawing liquid of copper wire according to claim 1, which is characterized in that the refined mineral oil is to wait to glue
The paraffin base oil of degree.
6. the quick drawing wire drawing liquid of copper wire according to claim 1, which is characterized in that the refined mineral oil further includes
Lubricity accelerating agent, gasification inhibitor and extreme pressure agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810436841.5A CN108467770A (en) | 2018-05-09 | 2018-05-09 | A kind of quick drawing wire drawing liquid of copper wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810436841.5A CN108467770A (en) | 2018-05-09 | 2018-05-09 | A kind of quick drawing wire drawing liquid of copper wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108467770A true CN108467770A (en) | 2018-08-31 |
Family
ID=63260247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810436841.5A Pending CN108467770A (en) | 2018-05-09 | 2018-05-09 | A kind of quick drawing wire drawing liquid of copper wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108467770A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504521A (en) * | 2018-12-29 | 2019-03-22 | 江苏万源新材料股份有限公司 | A kind of precision copper fitting capillary drawing coolant liquid |
| CN111872155A (en) * | 2020-07-31 | 2020-11-03 | 昆山汇荣电子材料有限公司 | Copper wire drawing method for producing tinned copper stranded wire |
| CN113881486A (en) * | 2021-11-01 | 2022-01-04 | 上海欧润克生物科技有限公司 | Drawing forming liquid |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952220A (en) * | 2014-03-28 | 2014-07-30 | 安徽联硕实业有限公司 | Rapid-radiating water-based aluminium wire drawing liquid |
| CN104928000A (en) * | 2015-07-03 | 2015-09-23 | 上海尤希路化学工业有限公司 | Multipurpose carbon-deposition-free environmental-friendly water soluble drawing lubricant |
| CN105038922A (en) * | 2015-06-25 | 2015-11-11 | 张勤洪 | Drawing fluid for aluminum material |
| CN107739649A (en) * | 2017-08-30 | 2018-02-27 | 中国石油化工股份有限公司 | A kind of antiwear oxidation cooling liquid composition for electric wire copper conductor |
-
2018
- 2018-05-09 CN CN201810436841.5A patent/CN108467770A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952220A (en) * | 2014-03-28 | 2014-07-30 | 安徽联硕实业有限公司 | Rapid-radiating water-based aluminium wire drawing liquid |
| CN105038922A (en) * | 2015-06-25 | 2015-11-11 | 张勤洪 | Drawing fluid for aluminum material |
| CN104928000A (en) * | 2015-07-03 | 2015-09-23 | 上海尤希路化学工业有限公司 | Multipurpose carbon-deposition-free environmental-friendly water soluble drawing lubricant |
| CN107739649A (en) * | 2017-08-30 | 2018-02-27 | 中国石油化工股份有限公司 | A kind of antiwear oxidation cooling liquid composition for electric wire copper conductor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504521A (en) * | 2018-12-29 | 2019-03-22 | 江苏万源新材料股份有限公司 | A kind of precision copper fitting capillary drawing coolant liquid |
| CN111872155A (en) * | 2020-07-31 | 2020-11-03 | 昆山汇荣电子材料有限公司 | Copper wire drawing method for producing tinned copper stranded wire |
| CN113881486A (en) * | 2021-11-01 | 2022-01-04 | 上海欧润克生物科技有限公司 | Drawing forming liquid |
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Application publication date: 20180831 |