CN107841650A - A kind of unleaded low silicon arsenic yellow copper of anti-dezincification and preparation method thereof - Google Patents
A kind of unleaded low silicon arsenic yellow copper of anti-dezincification and preparation method thereof Download PDFInfo
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- CN107841650A CN107841650A CN201711177228.8A CN201711177228A CN107841650A CN 107841650 A CN107841650 A CN 107841650A CN 201711177228 A CN201711177228 A CN 201711177228A CN 107841650 A CN107841650 A CN 107841650A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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Abstract
The present invention relates to defend kitchen industry copper alloy field, unleaded low silicon arsenic yellow copper of anti-dezincification that a kind of anti-Dezincification corrosion performance is good, intensity is high, processing characteristics is good and preparation method thereof, including raw material Cu62~65%, Si0.6~1.0%, As0.07~0.12%, Al0.5~0.8%, Fe0.03~0.1%, Pb by following mass percents are provided<0.1%th, remaining is the impurity melting of Zn and total amount no more than 0.35%, refined, stokehold detection, casting, obtains Pb<The step of 0.1% low silicon arsenic yellow copper ingot.
Description
Technical field
The present invention relates to defending kitchen industry copper alloy field, the unleaded low silicon arsenic yellow copper of more particularly to a kind of anti-dezincification and its system
Preparation Method.
Background technology
Lead-free reflow is the novel brass alloy material preferably promoted the use of when fashionable kitchen industry, for substituting ledrite,
But only Bi brass and the silizin of small range marketization application can be carried out so far.Relatively other elements instead of lead, silicon into
This is obvious much lower.Silizin has good mechanical property, and corrosion resistance is better than general brass, corrosion-free rupture tendency, wearability
Also can, it is good in cold conditions and hot lower pressure processing, easily welding and soldering, machinability is good, its thermal conductivity be in brass most
Low, it can be widely used for ship part, steam pipe and pipe fitting etc..
Dezincification corrosion is one of main failure forms of brass, and Zn contents are higher, and Dezincification corrosion is more serious.Si zinc equivalent
Coefficient is 10, the β phases boundary line of Cu-Zn phasors is moved to left significantly, and a small amount of addition can form two-phase brass, significantly improve alloy
Intensity and hardness while, reduce the Dezincification corrosion resistant performance of silizin.In order to balance above-mentioned performance tradeoff, domestic and international city
The high composition characteristic of existing unleaded silizin generally existing silicon high-copper on field, content is about 2~3%, Cu to Si by mass percentage
Mass percentage content is then mostly more than 75%, such as HSi80-3.Such silizin cost is high, and cutting ability substantially compares ledrite
Difference, processing efficiency are low.Reported according to the A of patent CN 104651660, domestic Ye You bathrooms producer uses the cast silicone of the low silicon of low copper
Brass material, mainly it is made up of the raw material of following mass percents:Cu60~63, Si0.5~0.9, but its Pb content remains above
0.1%, dezincification layer depth is 152.86~174.62 μm, though the dezincification layer depth of the HPb59-1 than being tested under equal conditions is small
（297.83μm）, but still can not meet that AS2345~2006 require（≤100μm）.
The present invention is towards kitchen industry is defended, based on the unleaded silizin composition design thought of the low copper of low silicon, by adding micro amount of arsenic
The methods of element, refinement matrix, lift the anti-Dezincification corrosion performance of low silizin.
The content of the invention
In view of the above-mentioned problems, the present invention proposes the anti-dezincification that a kind of anti-Dezincification corrosion performance is good, intensity is high, processing characteristics is good
Unleaded low silicon arsenic yellow copper and preparation method thereof.
To solve this technical problem, the present invention takes following scheme：A kind of unleaded low silicon arsenic yellow copper of anti-dezincification, by following matter
Measure the raw material composition of percentage:Cu62~65%, Si0.6~1.0%, As0.07~0.12%, Al0.5~0.8%,
Fe0.03~0.1%, Pb<0.1%th, remaining is the impurity of Zn and total amount no more than 0.35%.
Further improve：It is made up of the raw material of following mass percents:Cu62%, Si0.6%, As0.07%,
Al0.5%, Fe0.03%, Pb0.06%, Zn36.7% and total amount 0.04% impurity.
Further improve：It is made up of the raw material of following mass percents:Cu65%, Si1.0%, As0.12%,
Al0.8%, Fe0.1%, Pb0.1%, Zn32.78% and total amount 0.1% impurity.
Further improve：It is made up of the raw material of following mass percents:Cu63%, Si0.8%, As0.10%,
Al0.6%, Fe0.05%, Pb0.04%, Zn35.3% and total amount 0.11% impurity.
Based on same inventive concept, the present invention also puies forward a kind of preparation method of the unleaded low silicon arsenic yellow copper of anti-dezincification, including：
1）200~300kg pure red copper rice is first added in having core main frequency furnace, addition of pure red copper rice is total raw material at this
10~15%, when semi-molten state is in, granularity is accounted for the industrial pure silicon of above-mentioned total raw material 0.6~1.0% less than 1cm, loaded
In the copper pipe of suitable diameter, in level press-in copper liquid, and 150~200kg red copper rice is spread on copper liquid surface immediately, it is pure at this
The addition of red copper rice is the 7.5~10% of total raw material, uniformly sprinkles 1 ㎏ melting slag-cleaning agents, and 20min is incubated at 950~980 DEG C,
Allow silicon in the case of isolating oxygen with the abundant alloying of red copper rice；After insulation terminates, be respectively pressed into it is preheated account for it is above-mentioned total former
Material 0.5~0.8% aluminium ingot, copper and iron intermediate alloy and copper arsenic intermediate alloy, copper and iron close intermediate alloy addition to ensure on
The Fe contents in total raw material are stated up to 0.03~0.1%, the addition of copper arsenic intermediate alloy will ensure the addition in above-mentioned total raw material
Amount will ensure that up to 0.07~0.12%, 10min is stood after being sufficiently stirred for As contents in above-mentioned total raw material；
2）Copper plate is added, addition will ensure Cu contents in above-mentioned total raw material up to 62~65%, and the copper plate is that standard is cloudy
Pole copper, when copper coin fusing amount is up to 70~80%, the preheated 0# zinc ingot metals for accounting for total raw material 32.53~36.8% are pressed into, it is to be melted
Afterwards, stir, and be uniformly sprinkled into 1.5kg environment-friendly type scarfing cinder flux again on copper liquid surface, 1020 DEG C stand 10~
15min；
3）Sampling detection composition, and carry out composition adjustment according to composition detection data；
4）Flame, stirring, beat ash, drag for slag, should being stopped about in fire door when requiring that copper ash spoon beats ash from copper water during beating ash
20s, to ensure that copper water all flows into crucible in ash；
5）With bell jar by load weighted fining agent, copper liquid is pressed into, is sufficiently stirred and 15~20min is stood after 1020 DEG C, it is described thin
Agent is added by combination of F, Si, O, Mn, Ti element as the K salt or sodium salt of one or more of negative electricity valency acid ions, fining agent
It is 75~125g/T to enter amount and the relation of above-mentioned total raw material；
6）Carry out mobility, crystalline state, polishing state ingot casting impure point quantity and distribution etc. to examine, if light cup rough inner surface
Degree, burnishing surface impurity points and crystalline structure form are satisfied by requiring, you can casting, conversely, continue refining treatment, until
Meet that refining requires, obtain the copper liquid that Pb is less than 0.1%.
It is further improved to be：The step 4）The temperature of middle flame is 1050~1150 DEG C.
By using preceding solution, the beneficial effects of the invention are as follows：The present invention is using specific composition proportion, specific
Preparation method prepare brass, strictly control the order of addition of each raw material in process of production, avoid each material effective component
Scaling loss, and by selecting optimal addition to obtain accumulative effect, it is ensured that unleaded and reach ledrite processing characteristics
Under member condition, the anti-Dezincification corrosion performance of lead-free reflow is lifted.Cu contents wherein in composition are not higher than 65%, Si contents
0.6~1.0%, while brass alloys intensity and hardness is improved, meet the component requirements of the low silicon of low copper, effectively reduce cost；
As in composition improves the overpotential of analysis copper reaction, brass surfaces is easily generated CuCl2Film, this film are continuous, uniform
Protectiveness film, it can be stabilized, so as to block Dezincification corrosion reaction.Pb contents in composition come solely from the miscellaneous of raw material itself
Prime element；Al in composition also helps alloy surface oxide-film in addition to improving fluidity of molten, plays passivation corrosion protection；
The control of Fe contents is advantageous to crystal grain refinement, and reduce macroscopical columnar zone 0.03~0.1%.
In manufacture method, the present invention, as the pre- melt material in crucible bottom, can save smelting time, and have using pure red copper rice
Semi-molten state is in beneficial to control copper liquid, increases copper liquid viscosity, suppresses low-density raw material and floats, improve element absorption rate；
Low melting point, low-density are pressed into low temperature copper liquid or measures few raw material and ensures the time of repose of abundance, can effectively anti-oxidation burning
Damage, is advantageous to the abundant diffusion reaction of element, is easy to control composition, saves production cost；It is solid that half is in using Cu-Zn bianry alloys
High-temp high-viscosity characteristic during state phase region, copper silicon intermediate alloy is substituted with pure silicon, reduces production cost；In appropriate smelt stage
Addition slag-cleaning agent by several times, it is ensured that slag-cleaning agent fully adsorbs the oxide slag inclusion in copper liquid, avoids slag-cleaning agent from failing, further combined with
Flame handles comprehensive purifying copper liquid, can improve the distributing homogeneity of effective constituent element, reduces slag inclusion and forms the several of galvanic cell with matrix
Rate, reduce corrosion rate；From the angle that crystal structure is similar, lattice constant is suitable, appropriate Fe elements are added, are advantageous to heterogeneous
Forming core, strengthen grain refining effect, increase grain boundary area, reduce ormolu annode area, prevent the preferential dissolving of zinc selectivity；
Increase macroscopical proportion of equiaxed grain in ingot casting, reduce the unfavorable organizational factor for influenceing ingot casting compactness.
Brief description of the drawings
Fig. 1 is macroscopical microscopic structure schematic diagram of the unleaded silicon arsenic yellow copper of anti-dezincification；
Fig. 2 is the microcosmic microscopic structure schematic diagram of the unleaded silicon arsenic yellow copper of anti-dezincification.
Embodiment
In conjunction with the drawings and specific embodiments, the present invention is further described.
Embodiment one：A kind of unleaded low silicon arsenic yellow copper of anti-dezincification, is made up of the raw material of following mass percents:Cu62%,
Si0.6%, As0.07%, Al0.5%, Fe0.03%, Pb0.06%, Zn36.7% and total amount 0.04% impurity.
The preparation method of the above-mentioned unleaded low silicon arsenic yellow copper of anti-dezincification, including：
1）200kg pure red copper rice is first added in having core main frequency furnace, addition of pure red copper rice is the 10% of total raw material at this,
When semi-molten state is in, granularity is accounted for the industrial pure silicon of above-mentioned total raw material 0.6% less than 1cm, loads the copper of suitable diameter
In pipe, in level press-in copper liquid, and 150g red copper rice is spread on copper liquid surface immediately, addition of pure red copper rice is total at this
The 7.5% of raw material, uniformly sprinkle 1 ㎏ melting slag-cleaning agents, 950~980 DEG C be incubated 20min, allow silicon in the case of isolating oxygen with
The abundant alloying of red copper rice；After insulation terminates, after insulation terminates, the preheated aluminium for accounting for above-mentioned total raw material 0.5% is respectively pressed into
Ingot, copper and iron intermediate alloy and copper arsenic intermediate alloy, the addition that copper and iron closes intermediate alloy will ensure that the Fe in above-mentioned total raw material contains
For amount up to 0.03%, the addition of copper arsenic intermediate alloy will ensure that the addition in above-mentioned total raw material will ensure in above-mentioned total raw material
As contents stand 10min up to 0.07% after being sufficiently stirred；
2）Copper plate is added, addition will ensure Cu contents in above-mentioned total raw material up to 62%, and the copper plate is standard cathode
Copper, when copper coin fusing amount is up to 70~80%, the preheated 0# zinc ingot metals for accounting for total raw material 36.7% are pressed into, after to be melted, are fully stirred
Mix uniformly, and be uniformly sprinkled into 1.5kg environment-friendly type scarfing cinder flux again on copper liquid surface, 10~15min is stood at 1020 DEG C；
3）Sampling detection composition, and carry out composition adjustment according to composition detection data；
4）Flame, stirring, beat ash, drag for slag, should being stopped about in fire door when requiring that copper ash spoon beats ash from copper water during beating ash
20s, to ensure that copper water all flows into crucible in ash, the temperature of the flame is 1050~1150 DEG C；
5）With bell jar by load weighted fining agent, copper liquid is pressed into, is sufficiently stirred and 15~20min is stood after 1020 DEG C, it is described thin
Agent is added by combination of F, Si, O, Mn, Ti element as the K salt or sodium salt of one or more of negative electricity valency acid ions, fining agent
It is 75~125g/T to enter amount and the relation of above-mentioned total raw material；
6）Carry out mobility, crystalline state, polishing state ingot casting impure point quantity and distribution etc. to examine, if light cup rough inner surface
Degree, burnishing surface impurity points and crystalline structure form are satisfied by requiring, you can casting, conversely, continue refining treatment, until
Meet that refining requires, obtain the copper liquid that Pb is 0.06%.
As shown in Figures 1 and 2, close to 100%, secondary top layer macrograin is slightly thick, grand in ingot casting cross section macroscopic view equiax crystal region
About 50 μm of average grain size is seen, other regional macro average grain sizes are less than 40 μm；For two-phase brass tissue, β phase amounts
It is more, boundary-passivated positive effect, oval or long avette, be advantageous to avoid to produce stress concentration during stress；Anti- dezincification without
The hardness of lead silicon arsenic yellow copper is about 96HRB, higher than as cast condition HPb59-1（About 80~82HRB）, average dezincification layer depth is about 76 μ
m。
Embodiment two：
A kind of unleaded low silicon arsenic yellow copper of anti-dezincification, is made up of the raw material of following mass percents:Cu65%, Si1.0%,
As0.12%, Al0.8%, Fe0.1%, Pb0.09%, Zn32.79% and total amount 0.1% impurity.
The preparation method of the above-mentioned unleaded low silicon arsenic yellow copper of anti-dezincification, including：
1）The addition that 300kg pure red copper rice pure red copper rice at this is first added in having core main frequency furnace is the 15% of total raw material, is treated
During in semi-molten state, granularity is accounted for the industrial pure silicon of above-mentioned total raw material 1.0% less than 1cm, loads the copper pipe of suitable diameter
It is interior, in level press-in copper liquid, and 200 red copper rice is spread on copper liquid surface immediately, addition of pure red copper rice is total former at this
Material 10%, uniformly sprinkle 1 ㎏ melting slag-cleaning agents, 950~980 DEG C be incubated 20min, allow silicon in the case of isolating oxygen with purple
The abundant alloying of copper rice；After insulation terminates, the preheated aluminium ingot for accounting for above-mentioned total raw material 0.8% is respectively pressed into, copper and iron centre is closed
Gold and copper arsenic intermediate alloy, the addition that copper and iron closes intermediate alloy will ensure Fe contents in above-mentioned total raw material up to 0.1%, copper arsenic
The addition of intermediate alloy will ensure that the addition in above-mentioned total raw material will ensure the As contents in above-mentioned total raw material up to 0.12%,
10min is stood after being sufficiently stirred；
2）Copper plate is added, addition will ensure Cu contents in above-mentioned total raw material up to 65%, and the copper plate is standard cathode
Copper, when copper coin fusing amount is up to 70~80%, the preheated 0# zinc ingot metals for accounting for total raw material 32.79% are pressed into, after to be melted, are fully stirred
Mix uniformly, and be uniformly sprinkled into 1.5kg environment-friendly type scarfing cinder flux again on copper liquid surface, 10~15min is stood at 1020 DEG C；
3）Sampling detection composition, and carry out composition adjustment according to composition detection data；
4）Flame, stirring, beat ash, drag for slag, should being stopped about in fire door when requiring that copper ash spoon beats ash from copper water during beating ash
20s, to ensure that copper water all flows into crucible in ash, the temperature of the flame is 1050~1150 DEG C；
5）With bell jar by load weighted fining agent, copper liquid is pressed into, is sufficiently stirred and 15~20min is stood after 1020 DEG C, it is described thin
Agent is added by combination of F, Si, O, Mn, Ti element as the K salt or sodium salt of one or more of negative electricity valency acid ions, fining agent
It is 75~125g/T to enter amount and the relation of above-mentioned total raw material；
6）Carry out mobility, crystalline state, polishing state ingot casting impure point quantity and distribution etc. to examine, if light cup rough inner surface
Degree, burnishing surface impurity points and crystalline structure form are satisfied by requiring, you can casting, conversely, continue refining treatment, until
Meet that refining requires, obtain the copper liquid that Pb is 0.09%.
Embodiment three：
A kind of unleaded low silicon arsenic yellow copper of anti-dezincification, is made up of the raw material of following mass percents:Cu63%, Si0.8%,
As0.10%, Al0.6%, Fe0.05%, Pb0.04%, Zn35.3% and total amount 0.11% impurity.
The preparation method of the above-mentioned unleaded low silicon arsenic yellow copper of anti-dezincification, including：
1）The addition that 300kg pure red copper rice pure red copper rice at this is first added in having core main frequency furnace is the 15% of total raw material, is treated
During in semi-molten state, granularity is accounted for the industrial pure silicon of above-mentioned total raw material 0.8% less than 1cm, loads the copper pipe of suitable diameter
It is interior, in level press-in copper liquid, and 200 red copper rice is spread on copper liquid surface immediately, addition of pure red copper rice is total former at this
Material 10%, uniformly sprinkle 1 ㎏ melting slag-cleaning agents, 950~980 DEG C be incubated 20min, allow silicon in the case of isolating oxygen with purple
The abundant alloying of copper rice；After insulation terminates, the preheated aluminium ingot for accounting for above-mentioned total raw material 0.6% is respectively pressed into, copper and iron centre is closed
Gold and copper arsenic intermediate alloy, the addition that copper and iron closes intermediate alloy will ensure Fe contents in above-mentioned total raw material up to 0.05%, copper
The addition of arsenic intermediate alloy will ensure that the addition in above-mentioned total raw material will ensure that the As contents in above-mentioned total raw material reach
0.10%, stand 10min after being sufficiently stirred；
2）Copper plate is added, addition will ensure Cu contents in above-mentioned total raw material up to 63%, and the copper plate is standard cathode
Copper, when copper coin fusing amount is up to 70~80%, the preheated 0# zinc ingot metals for accounting for total raw material 35.3% are pressed into, after to be melted, are fully stirred
Mix uniformly, and be uniformly sprinkled into 1.5kg environment-friendly type scarfing cinder flux again on copper liquid surface, 10~15min is stood at 1020 DEG C；
3）Sampling detection composition, and carry out composition adjustment according to composition detection data；
4）Flame, stirring, beat ash, drag for slag, should being stopped about in fire door when requiring that copper ash spoon beats ash from copper water during beating ash
20s, to ensure that copper water all flows into crucible in ash, the temperature of the flame is 1050~1150 DEG C；
5）With bell jar by load weighted fining agent, copper liquid is pressed into, is sufficiently stirred and 15~20min is stood after 1020 DEG C, it is described thin
Agent is added by combination of F, Si, O, Mn, Ti element as the K salt or sodium salt of one or more of negative electricity valency acid ions, fining agent
It is 75~125g/T to enter amount and the relation of above-mentioned total raw material；
6）Carry out mobility, crystalline state, polishing state ingot casting impure point quantity and distribution etc. to examine, if light cup rough inner surface
Degree, burnishing surface impurity points and crystalline structure form are satisfied by requiring, you can casting, conversely, continue refining treatment, until
Meet that refining requires, obtain the copper liquid that Pb is 0.04%.
Based on preceding solution：As long as the cost of the unleaded low silicon arsenic yellow copper of anti-dezincification is in following weight component ratio
In the range of can be achieved the object of the invention：Cu62~65%, Si0.6~1.0%, As0.07~0.12%, Al0.5~
0.8%th, Fe0.03~0.1%, Pb<0.1%th, remaining is the impurity of Zn and total amount no more than 0.35%.
This present invention prepares brass using specific composition proportion, specific preparation method, in process of production strict control
The order of addition of each raw material is made, avoids the scaling loss of each material effective component, and by selecting optimal addition to be tired out
Product effect, it is ensured that under member condition that is unleaded and reaching ledrite processing characteristics, lift the anti-Dezincification corrosion of lead-free reflow
Energy.Cu contents wherein in composition are 0.6~1.0% not higher than 65%, Si contents, are improving the same of brass alloys intensity and hardness
When, meet the component requirements of the low silicon of low copper, effectively reduce cost；As in composition improves the overpotential of analysis copper reaction, makes Huang
Copper surface easily generates CuCl2Film, this film are continuous, uniform protectiveness film, can be stabilized, so as to block Dezincification corrosion
Reaction.Pb contents in composition come solely from the impurity element of raw material itself；Al in composition in addition to improving fluidity of molten,
Alloy surface oxide-film is also helped, plays passivation corrosion protection；The control of Fe contents is advantageous to crystal grain refinement 0.03~0.1%,
And reduce macroscopical columnar zone.
In manufacture method, the present invention as the pre- melt material in crucible bottom, can save smelting time using pure red copper rice, and
Be advantageous to control copper liquid to be in semi-molten state, increase copper liquid viscosity, suppress low-density raw material and float, improve element absorption rate；
Low melting point, low-density are pressed into low temperature copper liquid or measures few raw material and ensures the time of repose of abundance, can effectively anti-oxidation
Scaling loss, be advantageous to the abundant diffusion reaction of element, be easy to control composition, save production cost；Half is in using Cu-Zn bianry alloys
High-temp high-viscosity characteristic during solid-state phase region, copper silicon intermediate alloy is substituted with pure silicon, reduces production cost；In appropriate melting rank
Section adds slag-cleaning agent by several times, it is ensured that slag-cleaning agent fully adsorbs the oxide slag inclusion in copper liquid, avoids slag-cleaning agent from failing, further knot
Flame processing comprehensive purifying copper liquid is closed, the distributing homogeneity of effective constituent element can be improved, slag inclusion is reduced and forms galvanic cell with matrix
Probability, reduce corrosion rate；From the angle that crystal structure is similar, lattice constant is suitable, appropriate Fe elements are added, are advantageous to different
Matter forming core, strengthen grain refining effect, increase grain boundary area, reduce ormolu annode area, prevent that zinc selectivity is preferential molten
Solution；Increase macroscopical proportion of equiaxed grain in ingot casting, reduce the unfavorable organizational factor for influenceing ingot casting compactness.
Described in above, only this wound is used using the embodiment of this origination techniques content, any those skilled in the art
Make done modifications and changes, all belong to the scope of the claims of this creation opinion, and be not limited to those disclosed embodiments.
Claims (6)
- A kind of 1. unleaded low silicon arsenic yellow copper of anti-dezincification, it is characterised in that：It is made up of the raw material of following mass percents:Cu62~ 65%th, Si0.6~1.0%, As0.07~0.12%, Al0.5~0.8%, Fe0.03~0.1%, Pb<0.1%th, remaining is Zn and total amount are not more than 0.35% impurity.
- 2. the unleaded low silicon arsenic yellow copper of anti-dezincification according to claim 1, it is characterised in that：By the original of following mass percents Material composition:Cu62%, Si0.6%, As0.07%, Al0.5%, Fe0.03%, Pb0.06%, Zn36.7% and total amount 0.04% Impurity.
- 3. the unleaded low silicon arsenic yellow copper of anti-dezincification according to claim 1, it is characterised in that：By the original of following mass percents Material composition:Cu65%, Si1.0%, As0.12%, Al0.8%, Fe0.1%, Pb0.1%, Zn32.78% and total amount 0.1% it is miscellaneous Matter.
- 4. the unleaded low silicon arsenic yellow copper of anti-dezincification according to claim 1, it is characterised in that：By the original of following mass percents Material composition:Cu63%, Si0.8%, As0.10%, Al0.6%, Fe0.05%, Pb0.04%, Zn35.3% and total amount 0.11% Impurity.
- 5. the preparation method of the anti-unleaded low silicon arsenic yellow copper of dezincification, it is characterised in that：Including：1）200~300kg pure red copper rice is first added in having core main frequency furnace, addition of pure red copper rice is total raw material at this 10~15%, when semi-molten state is in, granularity is accounted for the industrial pure silicon of above-mentioned total raw material 0.6~1.0% less than 1cm, loaded In the copper pipe of suitable diameter, in level press-in copper liquid, and 150~200kg red copper rice is spread on copper liquid surface immediately, it is pure at this The addition of red copper rice is the 7.5~10% of total raw material, uniformly sprinkles 1 ㎏ melting slag-cleaning agents, and 20min is incubated at 950~980 DEG C, Allow silicon in the case of isolating oxygen with the abundant alloying of red copper rice；After insulation terminates, be respectively pressed into it is preheated account for it is above-mentioned total former Material 0.5~0.8% aluminium ingot, copper and iron intermediate alloy and copper arsenic intermediate alloy, copper and iron close intermediate alloy addition to ensure on The Fe contents in total raw material are stated up to 0.03~0.1%, the addition of copper arsenic intermediate alloy will ensure the addition in above-mentioned total raw material Amount will ensure that up to 0.07~0.12%, 10min is stood after being sufficiently stirred for As contents in above-mentioned total raw material；2）Copper plate is added, addition will ensure Cu contents in above-mentioned total raw material up to 62~65%, and the copper plate is that standard is cloudy Pole copper, when copper coin fusing amount is up to 70~80%, the preheated 0# zinc ingot metals for accounting for total raw material 32.53~36.8% are pressed into, it is to be melted Afterwards, stir, and be uniformly sprinkled into 1.5kg environment-friendly type scarfing cinder flux again on copper liquid surface, 1020 DEG C stand 10~ 15min；3）Sampling detection composition, and carry out composition adjustment according to composition detection data；4）Flame, stirring, beat ash, drag for slag, should being stopped about in fire door when requiring that copper ash spoon beats ash from copper water during beating ash 20s, to ensure that copper water all flows into crucible in ash；5）With bell jar by load weighted fining agent, copper liquid is pressed into, is sufficiently stirred and 15~20min is stood after 1020 DEG C, it is described thin Agent is added by combination of F, Si, O, Mn, Ti element as the K salt or sodium salt of one or more of negative electricity valency acid ions, fining agent It is 75~125g/T to enter amount and the relation of above-mentioned total raw material；6）Carry out mobility, crystalline state, polishing state ingot casting impure point quantity and distribution etc. to examine, if light cup rough inner surface Degree, burnishing surface impurity points and crystalline structure form are satisfied by requiring, you can casting, conversely, continue refining treatment, until Meet that refining requires, obtain the copper liquid that Pb is less than 0.1%.
- 6. the preparation method of the unleaded low silicon arsenic yellow copper of anti-dezincification according to claim 5, it is characterised in that：The step 4） The temperature of middle flame is 1050~1150 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711177228.8A CN107841650B (en) | 2017-11-22 | 2017-11-22 | Anti-dezincification lead-free low-silicon arsenic brass and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711177228.8A CN107841650B (en) | 2017-11-22 | 2017-11-22 | Anti-dezincification lead-free low-silicon arsenic brass and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN107841650A true CN107841650A (en) | 2018-03-27 |
| CN107841650B CN107841650B (en) | 2021-01-19 |
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| CN201711177228.8A Active CN107841650B (en) | 2017-11-22 | 2017-11-22 | Anti-dezincification lead-free low-silicon arsenic brass and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006097074A (en) * | 2004-09-29 | 2006-04-13 | Dowa Mining Co Ltd | Free-cutting brass |
| CN101633987A (en) * | 2009-06-19 | 2010-01-27 | 浙江天申铜业有限公司 | Lead-free environmental silicon brass alloy bar or alloy ingot and preparation method thereof |
| JP2012207255A (en) * | 2011-03-29 | 2012-10-25 | Joetsu Bronz1 Corp | Lead-free free-machining bronze alloy for casting |
| CN104109772A (en) * | 2013-04-18 | 2014-10-22 | 鹤山市金洲铜材实业有限公司 | Anti-dezincification corrosion-resistant DR brass and preparation method thereof |
| CN105925837A (en) * | 2016-06-23 | 2016-09-07 | 龙岩市鸿航金属科技有限公司 | Anti-dezincification free-cutting brass rod and production method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006097074A (en) * | 2004-09-29 | 2006-04-13 | Dowa Mining Co Ltd | Free-cutting brass |
| CN101633987A (en) * | 2009-06-19 | 2010-01-27 | 浙江天申铜业有限公司 | Lead-free environmental silicon brass alloy bar or alloy ingot and preparation method thereof |
| JP2012207255A (en) * | 2011-03-29 | 2012-10-25 | Joetsu Bronz1 Corp | Lead-free free-machining bronze alloy for casting |
| CN104109772A (en) * | 2013-04-18 | 2014-10-22 | 鹤山市金洲铜材实业有限公司 | Anti-dezincification corrosion-resistant DR brass and preparation method thereof |
| CN105925837A (en) * | 2016-06-23 | 2016-09-07 | 龙岩市鸿航金属科技有限公司 | Anti-dezincification free-cutting brass rod and production method thereof |
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