CN101837272B - Water-soluble molten metal oxidation resisting and reducing agent - Google Patents
Water-soluble molten metal oxidation resisting and reducing agent Download PDFInfo
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- CN101837272B CN101837272B CN2010101770462A CN201010177046A CN101837272B CN 101837272 B CN101837272 B CN 101837272B CN 2010101770462 A CN2010101770462 A CN 2010101770462A CN 201010177046 A CN201010177046 A CN 201010177046A CN 101837272 B CN101837272 B CN 101837272B
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Abstract
The invention discloses a water-soluble molten metal oxidation resisting and reducing agent which comprises the components of nonyl phenol polyethenoxy ether, malic acid, citric acid and water. The invention has the advantages of water solubility, good environmental performance, no halogen,convenient use, easy operation, low cost, high cost performance, remarkable and lasting effect, cleanness, simplicity,convenience and process optimization, and can simultaneously achieve the effects of oxidation resistance and active reduction and promote the improvement of the combining capacity of molten metal.
Description
Technical field
The present invention relates to a kind of metal oxidation resistance reducing agent, refer in particular to a kind of good environmental protection, not halogen-containing water-soluble molten metal oxidation resisting and reducing agent.
Background technology
In the commercial production, regular meeting relates to a kind of metal or alloy of fusion, the technology that makes itself and another kind of metal combine or adhere to.Because most metals contact with oxygen all can oxidation, like scruff (SnO and the SnO that in static tin stove or dynamic crest stove, produces
2) promptly be the modal example of burning in a kind of industry.Under hot environment, especially under melting state, the situation of metal (or alloy) oxidation can be more violent, can form one deck oxide very soon, and gather many more more.And adhere in the technical process that combines at motlten metal and other metals, the flow circuit that motlten metal must not stop, this can aggravate oxidation rate on the one hand, means that on the other hand the oxide on top layer and a spot of oxygen can be brought to below the liquid level, i.e. liquid internal.Oxidation can take place in inside equally so.Oxide will be carried the floating liquid level of going up of good metal secretly like this, form scum silica frost.Because the generation that do not stop of scum silica frost, emersion causes the scum silica frost accumulation more and more, and is folded, more and more thicker mutually layer by layer, influence liquid level after several hours and flows, even produce excessively, pollutes danger again.The scum silica frost that is produced can not normally be participated in the production process that merges, can only constantly salvage out otherwise processed.Because of after salvaging scum silica frost, liquid level is not enough, even it is not enough to produce consumption, can only ceaselessly add and replenish new raw metal.
For this reason, for avoid the motlten metal oxidation as far as possible, need motlten metal is carried out anti-oxidant treatment, at present, existing antioxidation processing technology mainly contains reducing agent reducing process, reduction machine facture, fills nitrogen insulation blocking method etc.Wherein increase reducing agent and reduce antioxidation method and adopt comparatively extensively, reducing agent commonly used has the gluey reducing substances of reduced powder, reducing metal and thickness etc.
Wherein, the working method that adopts reduced powder to reduce is: at the motlten metal liquid surface, sow flour, its deficiency or limitation show as follows:
A: use very inconvenience of form, because it is a flour, it is very not easy to operate to make an addition to the high-temperature molten metal surface; For the bigger liquid level of surface area; Want to sow and evenly note again not ironed by high temperature, must be very careful, so use extremely inconvenience.
B: disperse easily, thereby cause waste and pollute,, and ventilation unit is arranged all generally above the motlten metal liquid level, as sow and improper generation is dispersed, cause waste and pollute because be the dryness flour.
C: smog is bigger, and reduced powder is generally acid, alkali, salts substances, with after the motlten metal liquid level contacts can and other auxiliary agents reactions, the back smog that is heated is bigger, original ventilation unit is not enough to wind is drained.
D: harmfulness is bigger, mentions as above, and because of it is acid, alkali, salts substances, to human body, equipment, environment all have certain harm, calculate the saving of its effect back reduzate, and economic worth is not high.And adopt the operating principle of reduction particle (metal) to be: in or the metal that mix identical with motlten metal, add high-purity activity material (like reduced powder), cooling forming is processed metallic particles (or metal segments), adds and motlten metal liquid during use.Its weak point have following some:
A: costliness, can know from its preparation form, because of having passed through the metal fusion, add active matter, operations such as moulding, Master Cost and processing charges are all very high.
B: occupation mode is optimized inadequately, during use, drops in proportion in the motlten metal liquid, lets metallic particles melt, and separates out reducing substances, recurrence reduction and anti-oxidation effect.Because of fusing needs a time, after separating out, active matter is dissolved in metal liquid, rapid even diffused, also non-easy thing.
C: alloy content changes than regular meeting, and not necessarily in full accord with the work alloy because of the metallic particles alloy ratio, the long-term input can change work alloy content ratio, and this sometimes change can bring serious quality consequence.
D: certain side effect is arranged, and accurate, wayward because of the consumption requirement, because of production line is not balanced especially, it is excessive that some particle uses, and except causing waste, work molten alloy tension force become greatly, combines on the contrary and adhere to quality to descend.
The method that adopts the gluey reducing substances of thickness is that more external companies release.Its operation principle does, in viscous liquid, adds active material, pours the motlten metal liquid level during use into, through fully stirring, is spread in liquid surface, forms diaphragm, and continues to take place reduction.Its limitation be following some:
A: spread rapidly inadequately, must effort stir.
B: oily matter viscosity is excessive, and regular meeting is attached to workpiece, causes contamination of products, is difficult to clean.
C: the residual and motlten metal mixture of its viscosity, in the motlten metal flow circuit, be attached to part of appliance, cause equipment circulation canal obstruction, not smooth, bring inconvenience to plant maintenance.
D: sediment, stick at part of appliance, be similar to the resin type hard material, cleaning is difficulty very.Very inconvenience of corrective maintenance cleaning, in the long run, damage equipment is bound to.
E: the phosphorous strong inorganic acid of environmental pollution property that waits, do not have a feature of environmental protection, the halogen that wherein contains can be attached to workpiece, causes product to be prone to moisture absorption oxidation.
Summary of the invention
To problem set forth above, the object of the invention is to provide a kind of good environmental protection, the not halogen-containing ability economy water-soluble molten metal oxidation resisting and reducing agent of reducing and smelting burning scum silica frost easily.
The present invention realizes through following technical measures, a kind of water-soluble molten metal oxidation resisting and reducing agent, and its component comprises NPE, malic acid, citric acid and water.
The weight quota of above each component is: 5～20 parts in 70～130 parts of NPEs, 2～10 parts of malic acid, 1～6 part of citric acid and water.
The preferred D-malic acid of above-mentioned malic acid, L MALIC ACID or DL-malic acid; The preferred especially DL-malic acid that mixes.
Deionized water that the preferred impurity content of above-mentioned water is few or distilled water.
The weight quota of above each component is preferred: 10 parts in 82 parts of NPEs, 5 parts of malic acid, 3 parts of citric acids and water.
In above each component, also can add an amount of essence.
The invention also discloses the method for preparing water-soluble molten metal oxidation resisting and reducing agent, may further comprise the steps:
(1) heats water to 60～100 ℃, slowly add NPE, stirred 3～5 minutes;
(2) product of treating a step is cooled to 30～50 ℃ malic acid and citric acid is slowly added in the cooled product while stirring, then stir 10～15 minutes after, be packaged into finished product on request.
Beneficial effect of the present invention has:
A: water-soluble, good environmental protection, not halogen-containing
The invention discloses the water-soluble molten metal oxidation resisting and reducing agent that a kind of main union base phenol polyethenoxy ether, malic acid, citric acid and water are composited; NPE wherein is a kind of water soluble nonionic surfactant of resistance to acids and bases; The chemical stability of this material is high, is destroyed by strong acid, highly basic even at high temperature also be difficult for; Malic acid is strong, the Well-recovered water-soluble organic acid of a kind of oxidation resistance; Citric acid can improve the oxidisability of malic acid greatly, and it still is a kind of water soluble nonionic surfactant and complexing agent simultaneously; After adding the few water of impurity content; Various materials are organically combined, produce effect, the not phosphorous strong inorganic acid of environmental pollution property that waits of wherein each component molten metal oxidation resistance and reducing agent; Not halogen-containing, therefore can not cause the easy moisture absorption oxidative phenomena that adheres to workpiece.
B: convenient use, easy operating
The present invention is a water-soluble liquid; Get final product during use, and the present invention adopts the tension force diffusion technique and is added with surface reactive material, when two kinds of liquid contacts in the motlten metal liquid level; Can produce parent/thin bipartite molecules key; Reduce molten metal surface tension force, promote the automatic rapid diffusion of anti-oxidant reduction liquid simultaneously, other existing products then must add mechanical force (stirring) etc. just can be paved with whole liquid level; Add so adopt anti-oxidation reducing agent of the present invention to need only at several points, product can be rapidly " intelligence " to uncovered area diffusion and mobile, and anti-oxidation reducing agent promptly can be paved with whole liquid level after 3～5 seconds; Simultaneously, because of product continues to work for floating on molten liquid surface,, so also be convenient to operation so that the amount that adds does not require is very accurate.
C: can play anti-oxidation simultaneously and the active reduction
Existing various method of reducing can only play a kind of effect usually, as fill nitrogen insulation blocking method and can only rise and prevent oxidation; Metallic particles/reduced powders etc. can only play restoring function, and prevent that oxidative function from not having.
And the present invention is liquid, is lighter than motlten metal liquid, thereby can be paved with whole mobile liquid level secluding air (oxygen), effectively anti-oxidation.Simultaneously, contain active material and organic acid among the present invention, the inside gravitation of dispersible metal scum silica frost is initiatively broken up structure, and the reduction useful metal is got back in the container.
D: service hoisting binding ability
Use anti-oxidation reducing agent of the present invention, reduced shruff on the one hand, the motlten metal liquid fluidity is more smooth and easy; On the other hand; The active material that contains among the present invention (surfactant) can reduce the fluid level gauge surface tension; Increase molten metal flow property, diffusivity; Thereby promote the combination of motlten metal or adhere to quality, thus make this operation the combination or the attachment level that will reach improve greatly, this is of the present invention one big characteristic.This also is existing other several kinds of reducing agents or method does not possess or usefulness is inaccessible.
E: with low cost, cost performance is high
Because of the present invention has adopted novel inexpensive active component, and reduction efficiency is very high, about about 95%, so the low greatly and additive method of unit reducing metal cost.Through measuring and calculating, can practice thrift metal and use 50% of total amount for this workshop section, economic benefit is considerable, and cost performance is very high.
F: effect is remarkable, continuous and effective
The present invention adopts new technology and processes, and it is poured into the motlten metal liquid level gets final product, the former oxide that has produced; Can, the present invention reduction disappear when adding the back diffusion; To the oxide of follow-up generation decomposition-reduction at any time, effect can be got instant result, and 4～5 hours continuous and effective.
G: clean easyly, optimize technology
The present invention is a water-soluble liquid, and it is convenient to add, and can not disperse, and its density far is lighter than motlten metal simultaneously, and can form a diaphragm at molten metal surface, plays the active ingredient continuous and effective, must not add repeatedly.
Simultaneously, because of oxide is constantly reduced, so the remaining scum silica frost that produced every day is considerably less, originally must clear up twice every day, need only pause cleaning at present every day, two to three days (prime shift) clearly once gets final product greatly.And the lime-ash that is produced is dry and comfortable property bulk materials, and residue is loose frangible, sticks to residue on the equipment and only need root out gently and get final product, or use our company's scavenger specially to soak to remove after 5～15 minutes and get final product.Slag is few, and cleaning time is few, has kept clean environment naturally, has optimized operation and cleaning procedure simultaneously.
H: be widely used
Alternative fully used various reducing agents at present; And reduction machine method, fill nitrogen insulation blocking method etc.; Be used for the next technical process that combines or adhere to another kind of metal of a kind of metal or alloy of various fusions, for example, can be used for manual immersed solder, wave-soldering welding procedures such as (having plumbous or unleaded).
The specific embodiment
Below in conjunction with embodiment the present invention is done further explain.
Embodiment 1:
Method for making:
(1) 10 parts of deionized waters is heated to 60～100 ℃, slowly adds 82 parts of NPEs, stirred 3～5 minutes;
(2) product of treating a step is cooled to 30～50 ℃ 5 parts of DL-malic acid and 3 parts of citric acids is slowly added in the cooled product while stirring, then stir 10～15 minutes after, be packaged into finished product on request.
Embodiment 2:
Method for making is with embodiment 1.
Embodiment 3:
Method for making is with embodiment 1.
Physical aspect of the present invention is a water-soluble liquid, is different from existing reducing agent, and operation was convenient in the motlten metal of liquid state, add when this water-soluble liquid helped using; Also help simultaneously on the molten metals in liquid state surface diffuses flow fast.During use, only need anti-oxidation reducing agent of the present invention directly is poured into liquid level, promptly can spread rapidly voluntarily, be paved with whole liquid level.
Of the present invention anti-oxidant, the reduction principle is following:
1, cuts off oxygen, thereby reduce amount of oxidation
Behind product adding molten metal surface, it is diffusion rapidly, and is paved with whole liquid level, forms layer protecting film, and the partition motlten metal contacts with oxygen, thereby reduces amount of oxidation.
2, disperse froth structure, restore useful metal
After product added the motlten metal liquid level, product can soak in the scum silica frost slit, contains diffusion/dispersant in the product; Play the diffusion froth structure; Reduce its structural tension, make scum silica frost disperse rapidly, liquid from the thick shape that irregular event attitude becomes dispersion rapidly; Useful metal i.e. reduction at once flow back in the liquid bath, continues to participate in effective operation technology.
3, reduce the molten metal bath surface tension, improve combination and adhere to quality
Because of the active component among the present invention (surfactant) can change the molten metal bath surface tension, thereby improve molten metal flow property and binding ability.
Through using and calculating, reduction efficiency of the present invention can reach 85%～95%, and can improve combination and adhere to flowability more than 20%, correspondingly can practice thrift 30～50%/workshop section cost.
In order to practice thrift more, reach better economic effect, in actual the use, anti-oxidation reducing agent of the present invention can cooperate following method to use:
One, water conservancy diversion method
The water conservancy diversion ratio juris is following: motlten metal liquid is because of constantly circulating, so the oxide that produces is a lot.If the minimizing flow area will reduce amount of oxidation, thereby reducing agent also can be used less.So; The specific practice of water conservancy diversion method is: make 3～5 stainless steel catch; Approximately go deep into 3～5cm below the liquid level, the part that motlten metal is flowed is limited in the less zone, and it is static that most of liquid level is in; But can fully circulate again below the liquid level, not influence the original operating type of whole operation.
Two, collecting method
The collection ratio juris is following: the motlten metal liquid level, have only the partial oxidation that flows or kick up serious, as with the scum silica frost of this part directly in the method for motlten metal liquid level collection and treatment, can reach the effect of getting twice the result with half the effort.
So the main points of collecting method are: according to the difference of the container that holds motlten metal, the design screen cloth; Be shaped as the u type, the metal liquid of kicking up can flow in this screen cloth, and scum silica frost can not pass through sieve aperture; Can be collected into interior, and motlten metal can free flow out from sieve aperture, and the container edge can a little higher than liquid level 1～2CM; Add reducing agent, at any time reduction.Scum silica frost can not be floated to other places like this, and whole liquid level does not have scum silica frost basically.
Cooperate and adopt these two kinds of householder methods.Can make reduction efficiency/usefulness higher, reach better economic benefit.
More than be that the multiple formulations and the preparation method of water-soluble molten metal oxidation resisting and reducing agent of the present invention are set forth; Be used for helping to understand the present invention; But embodiment of the present invention is not restricted to the described embodiments; Any change that does not deviate under the principle of the invention to be done, modification, substitute, combination, simplify, all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. water-soluble molten metal oxidation resisting and reducing agent, it is characterized in that: component comprises NPE, malic acid, citric acid and water, the weight quota of each component is:
70～130 parts of NPEs;
2～10 parts of malic acid;
1～6 part of citric acid;
5～20 parts in water.
2. water-soluble molten metal oxidation resisting and reducing agent according to claim 1 is characterized in that: said malic acid is D-malic acid, L MALIC ACID or DL-malic acid.
3. water-soluble molten metal oxidation resisting and reducing agent according to claim 1 is characterized in that: said water is deionized water or distilled water.
4. water-soluble molten metal oxidation resisting and reducing agent according to claim 1 is characterized in that the weight quota of each component is:
82 parts of NPEs;
5 parts of malic acid;
3 parts of citric acids;
10 parts in water.
5. water-soluble molten metal oxidation resisting and reducing agent according to claim 1 is characterized in that: also comprise an amount of essence in the component.
6. method for preparing water-soluble molten metal oxidation resisting and reducing agent as claimed in claim 1 is characterized in that may further comprise the steps:
(1) heats water to 60～100 ℃, slowly add NPE, stirred 3～5 minutes;
(2) product of treating a step is cooled to 30～50 ℃ malic acid and citric acid is slowly added in the cooled product while stirring, then stir 10～15 minutes after, be packaged into finished product on request.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101770462A CN101837272B (en) | 2010-05-18 | 2010-05-18 | Water-soluble molten metal oxidation resisting and reducing agent |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101770462A CN101837272B (en) | 2010-05-18 | 2010-05-18 | Water-soluble molten metal oxidation resisting and reducing agent |
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| CN101837272A CN101837272A (en) | 2010-09-22 |
| CN101837272B true CN101837272B (en) | 2012-09-26 |
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| CN103212761B (en) * | 2012-06-26 | 2015-05-06 | 深圳市堃琦鑫华股份有限公司 | Welding method |
| CN105834546A (en) * | 2016-06-02 | 2016-08-10 | 陈浩 | Tin recovery device with hypersorber |
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|---|---|---|---|---|
| CN101215712A (en) * | 2008-01-14 | 2008-07-09 | 深圳市堃琦鑫华科技有限公司 | Molten metal oxidation resistance reducing agent |
| CN101532130A (en) * | 2009-01-12 | 2009-09-16 | 深圳市堃琦鑫华科技有限公司 | Molten metal anti-oxidation reducing agent, preparation method and application thereof |
| CN101545049A (en) * | 2009-05-15 | 2009-09-30 | 何光宁 | Molten metal reduction release agent |
| EP2333024A1 (en) * | 2009-12-10 | 2011-06-15 | Riso Kagaku Corporation | Electrically conductive emulsion ink and method for producing electrically conductive thin film using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0594614A (en) * | 1991-09-30 | 1993-04-16 | Nec Corp | Magnetic recording medium and production thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215712A (en) * | 2008-01-14 | 2008-07-09 | 深圳市堃琦鑫华科技有限公司 | Molten metal oxidation resistance reducing agent |
| CN101532130A (en) * | 2009-01-12 | 2009-09-16 | 深圳市堃琦鑫华科技有限公司 | Molten metal anti-oxidation reducing agent, preparation method and application thereof |
| CN101545049A (en) * | 2009-05-15 | 2009-09-30 | 何光宁 | Molten metal reduction release agent |
| EP2333024A1 (en) * | 2009-12-10 | 2011-06-15 | Riso Kagaku Corporation | Electrically conductive emulsion ink and method for producing electrically conductive thin film using the same |
Non-Patent Citations (1)
| Title |
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| JP特开平5-94614A 1993.04.16 |
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