CN104831115A - Manganese-containing brass alloy and preparation method thereof - Google Patents
Manganese-containing brass alloy and preparation method thereof Download PDFInfo
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- CN104831115A CN104831115A CN201510205771.9A CN201510205771A CN104831115A CN 104831115 A CN104831115 A CN 104831115A CN 201510205771 A CN201510205771 A CN 201510205771A CN 104831115 A CN104831115 A CN 104831115A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/121—Use of special materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
- F16C17/18—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with floating brasses or brushing, rotatable at a reduced speed
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- Mechanical Engineering (AREA)
- Supercharger (AREA)
Abstract
The invention relates to a manganese-containing brass alloy and a preparation method thereof, and belongs to the technical field of alloy materials. The brass alloy comprises copper, manganese, aluminium, silicon, and zinc. After a heat treatment, the microscopic tissue of the semi-finished product comprises the following phases in percentage by volume: 1 to 15% of alpha-phase, 1 to 6% of MnSi compound phase, and more than 80% of beta-phase. The alloy comprises the following components in percentage by weight: 56 to 60% of copper, 0.5 to 3.0% of manganese, 0.5 to 3.0% of aluminum, 0.05 to 2% of silicon, not more than 0.1% of lead, and the balance being zinc and inevitable impurities. The manganese-containing brass alloy preparation method comprises steps of material preparing, smelting, extruding, stretching, and heat treatment before finishing. The heat treatment comprises the following steps: subjecting a manganese-containing brass alloy blank to a heat treatment in a heat treatment furnace, raising the temperature to a temperature of 250 to 400 DEG C at an average temperature-rising speed of not more than 200 DEG C per minute, maintaining the temperature for at least one hour, and then cooling at an average temperature-reducing speed of not more than 300 DEG C per minute. The alloy has the advantages of excellent mechanical processing property, good cutting performance, and high high-temperature stability, and can be used to produce wear-resistant parts.
Description
Technical field
The present invention relates to a kind of containing manganese brass alloy and preparation method thereof, belong to technical field of alloy material.
Technical background
Turbo-supercharger is a significant components of motor car engine, can improve air input of engine by air, thus improves power and the moment of torsion of engine, makes car power more sufficient.After turbo-supercharger loaded onto by an engine, its peak power can increase compared with when being unkitted supercharging blower 40% and more than.Floating bearing and thrust plate are the core components in turbo-supercharger, during normal work, bearing rotating speed is more than 60,000-12 ten thousand revs/min, harsh requirement is had to the wear resisting property of material and stability, because the friction pair of copper steel composition can form good oil film under this operating mode, therefore the floating bearing of turbo-supercharger and thrust plate wide selection Cu alloy material, common are Redford alloy, manganese brass etc.Because the working speed of turbo-supercharger is high, its lubricant medium temperature is generally more than 200 DEG C, and the temperature limitation of part reaches 350 DEG C, therefore requires that material has extraordinary thermal stability to ensure the running under long-time worst hot case.And Redford alloy at high temperature unstable properties conventional at present, its intensity there will be obvious decline, can cause the problems such as the wearing and tearing aggravation of material, shortens the work-ing life of turbo-supercharger.
In addition European Union ELV instruction is about to expire to automobile copper alloy lead-free instruction exemption clauses, and the unleaded demand that the copper alloy for automobile component comprises floating bearing of turbo-charger and thrust plate copper alloy is more and more urgent.Current Redford alloy is as C93200, and this alloy has good wear resisting property and self-lubricating property, but it contains the lead content of nearly 7%, and tensile strength only has 250MPa, cannot meet operating mode and the environmental requirement of turbo-supercharger completely.And conventional low-lead alloy manganese brass is as CW713R, due to the lead that it also contains nearly 0.8%, the lead content control overflow of ELV instruction can not be met.
But and environment protection is more and more paid attention to along with the development rapidly of Domestic Automotive Industry and the fast lifting of automobile occupancy volume per capita and government, vehicle turbine supercharging will be an obviously development trend.Need the problem of solution badly as core component floating bearing in turbo-supercharger and thrust plate starting material to high-temperature stability and unleaded demand, the domestic solution not yet having relevant technology to propose above problem at present.Therefore a Pb-free copper-alloy material under the high temperature conditions with better wear resisting property is developed extremely urgent.
Summary of the invention
First object of the present invention is for the deficiencies in the prior art, provide a kind of there is excellent mechanical property while have good cutting ability and good thermostability containing manganese brass alloy.
Above-mentioned purpose of the present invention is achieved through the following technical solutions, a kind of containing manganese brass alloy, the composition of this alloy comprises copper, manganese, aluminium, silicon, zinc, the described α phase comprising (by volume percentages) 1-15% containing the microtexture of manganese brass alloy after thermal treatment before finished product, the MnSi Compound Phase of 1-6%, is greater than the β phase of 80%.
After thermal treatment before finished product, α phase, MnSi phase are evenly distributed among β phase constitution, and material structure is evenly distributed, and when subsequent high temperature stability is tested, under the condition of 200 DEG C, still can keep long thermal stability.The α phase separated out in addition plays in the alloy and promotes the plasticity of material and the effect of toughness, meet floating bearing and the application of thrust plate material in turbo-supercharger, avoid due to plasticity and toughness poor, unusual condition is there is in turbo-supercharger operation process, simultaneously because α compares soft, in high-speed friction process, play damping of shocks effect, prevent MnSi phase from coming off in high-speed friction, scratch the surface of part, reduce the work-ing life of part.Due to β, to compare α phase harder more crisp, therefore in the mach process of part, just easily forms chip breaking, thus solve the problem twining cutter that material easily occurs in machining process, and material still can be processed fast under unleaded condition.Before coordinating finished product again, thermal treatment makes the distribution of phase constitution more even, also improves the machinability of material further, protects in machining process the problem causing due to tissue odds cutter impaired simultaneously, saved cost.Therefore, compared with prior art, the present invention has better high temperature stability performance, abrasion resistance properties and lower frictional coefficient containing manganese brass alloy, and tissue distribution is even, and excellent cutting performance, meets the demand that production starting material are unleaded.
Contain in manganese brass alloy above-mentioned, the described composition containing manganese brass alloy comprises by weight percentage: copper 56-60%, manganese 0.5-3.0%, aluminium 0.5-3.0%, silicon 0.05-2%, plumbous <0.1%, and surplus is zinc and inevitable impurity.
As preferably, the described composition containing manganese brass alloy comprises by weight percentage: copper 56.3-59.4%, manganese 0.8-2.68%, aluminium 0.8-3.0%, silicon 0.1-2%, plumbous <0.1%, and surplus is zinc and inevitable impurity.
In LEAD-FREE BRASS ALLOY, manganese element is solid-solution in copper Zinc Matrix in a large number, play the effect of solution strengthening, and interact with silicon, aluminium element and form compound, in certain compositional range, improve wear resisting property, and improve alloy thermostability, anti-ly burn the intensity of abradability and alloy material.If in the present invention containing in manganese brass alloy but the content of Mn is less than 0.5%, then cannot form enough manganese silicon compounds, effectively cannot improve the abrasion resistance of material, equally, if the content of Mn has exceeded 3.0%, then the fragility of material can promote greatly.
The interpolation of Si element not only can improve the mobility of casting, defines intermetallic compound with manganese or nickel element, improves the abrasion resistance properties of material, can also reduce the generation of α phase, ensure that the machinability of material.But excessive Si can increase the fragility of alloy, cause the stress cracking phenomenon of alloy.Therefore, in the application's brass alloys, the content of Si should control at 0.05-2.0%.
In LEAD-FREE BRASS ALLOY of the present invention, 0.5-3.0%Mn and 0.05-2.0%Si can form high hardness compound simultaneously, the effect of support can be played in friction process, reduce the contact surface between friction pair, reduce frictional coefficient, the feature of the high rigidity simultaneously had due to MnSi compound can significantly improve the wear resisting property of alloy, thus promotes the work-ing life of component.Coordinate thermal processes act again, by these, the Hard Inclusion be distributed in a jumble between alloy phase structure is uniformly distributed, the work-ing life of alloy can be promoted further, avoid causing due to the defect of local Hard Inclusion material occur the breakage of local and cause unnecessary loss.
Al element can make grain refining with Cu solid solution, defines Mn-Al compound with Mn, and defines tiny Fe with Fe
3al particle, improve intensity and the plasticity of material, and Al forms firm oxide film at alloy surface, improves the corrosion resistance nature of material for gaseous, liquid, further increases intensity and the hardness of material.And excessive Al can make the plasticity of alloy sharply reduce, be degrading the cold-forming property of alloy, therefore, in brass alloys of the present invention, the content of Al controls at 0.5-3.0%.
As preferably, described one or more compositions also comprised containing manganese brass alloy in chosen from Fe, tin, nickel, phosphorus, lanthanum, the total content of described composition is less than 2% by weight percentage.
In brass alloys of the present invention, the Main Function of Ni is for making structure refinement; improve impelling strength; the Si of 0.05-2% is particularly coordinated to add; the wear-resisting particle of NiSi can be formed; improve the abrasion resistance properties of material; nickel can expand alpha phase zone within the specific limits simultaneously; increase α Phase Proportion; wear-resisting particle is played a protective role; prevent the phenomenon that wear-resisting particle comes off in a large number in friction process, but too high nickel content can cause α phase too much, causes the mechanical property of material to decline; therefore in brass alloys of the present invention, add nickel, its content is less than 2%.Fe act as crystal grain thinning, improves the mechanical property of material, and forms irony point, forms a small amount of loosening, formed " hole effect ", the cutting ability of raising material that can be suitable around Fe particle.The effect adding Sn is anti-" dezincify ", the SnO of generation
2protective membrane has erosion-resisting ability.The effect of P and La is deoxidation and crystal grain thinning, makes the tissue distribution after thermal treatment more even.But the hot workability of excessive Ni, Fe, Sn, P, La meeting alloy impacts.
Further preferably, described also comprises containing manganese brass alloy one or more compositions be selected from cobalt, boron, bismuth, antimony, tellurium, selenium, and the total content of described composition amounts to by weight percentage and is less than 2%.
In brass alloys of the present invention, add Co can form Co with Si
2si compound, has the effect of precipitation strength, can further improve the intensity of material, hardness and wear resisting property, and can strengthen the compound that solidification separates out, but excessive Co can cause the increase of cost and the impact of the processing characteristics of alloy.Add B and can make alloy grain refinement, simultaneously and can also distribute and collaboratively play the effect promoting alloy high-temp performance further with the content of phase constitution after thermal treatment, the cold working that excessive B understands alloy impacts.Add the cutting ability that Bi, Sb, Te, Se all improve material, but excessive element can affect cold working and the hot-work of material.
As preferably, described containing manganese brass alloy microtexture after heat treatment also comprise in AlFe Compound Phase, NiSi Compound Phase one or both.
As preferably, the described grain fineness number containing manganese brass alloy is 10 μm-50 μm.Further preferably, the described grain fineness number containing manganese brass alloy is 15 μm-40 μm.The grain fineness number size distribution of the tissue such as alloy is even, further ensures the thermal stability of alloy etc., avoids because portion of tissue is bigger than normal, cause part in operation process, occur breakage.
As preferably, the described tensile strength containing manganese brass alloy is greater than 590MPa, and hardness is greater than 140HB, and cutting ability is greater than 69%, under 200 DEG C of conditions, be incubated 100h, still can keep more than 75% of original intensity.
Second object of the present invention is to provide a kind of above-mentioned preparation method containing manganese brass alloy, and the method comprises: before batching, melting, extruding, stretching, finished product, thermal treatment obtains containing manganese brass alloy;
Before described finished product, thermal treatment concrete steps are: will heat-treat in heat treatment furnace containing manganese brass alloy blank, rise to 250-400 DEG C with the average heating rate being not more than 200 DEG C/min to be incubated, soaking time, at more than 1h, cools with the average rate of cooling being not more than 300 DEG C/min after insulation.
Brass alloys of the present invention are after thermal treatment before finished product, and its microcosmic composition comprises the α phase of (by volume percentages) 1-15%, and the MnSi Compound Phase of 1-6%, is greater than the β phase of 80%.The present invention significantly improves the heterogeneous microstructure of material by finished product thermal treatment process, and by the control of speed of cooling, alloy Second Phase Precipitation is distributed more even.After heat treatment, α phase, MnSi phase are evenly distributed among β phase constitution, and the material structure after extruding is evenly distributed, when subsequent high temperature stability is tested, because material structure is evenly distributed, therefore under the condition of 200 DEG C, still long thermal stability can be kept.The α phase separated out in addition plays in the alloy and promotes the plasticity of material and the effect of toughness, meets floating bearing and the application of thrust plate material in turbo-supercharger, avoid due to plasticity and toughness poor, in turbo-supercharger operation process, there is unusual condition.Due to β, to compare α phase harder more crisp, therefore in the mach process of part, just easily forms chip breaking, thus solve the problem twining cutter that material easily occurs in machining process, and material still can be processed fast under unleaded condition.Before finished product, thermal treatment makes the distribution of phase constitution more even, also improves the machinability of material further, protects in machining process the problem causing due to tissue odds cutter impaired simultaneously, saved cost.
As preferably, in fusion process, induction stirring is also coordinated to produce.In conjunction with induction stirring on above-mentioned heat treated basis, the further precipitation improving second-phase, optimize the flowing of molten metal in casting blank solidification process, reach the effect of crystal grain thinning, make the grain fineness number size distribution such as tissue such as alloy even, mean grain size size is made to control, between 10 μm-50 μm, to decrease the segregation of element.
As preferably, the temperature of described melting is 950-1250 DEG C.If smelting temperature is lower than 950 DEG C, copper water flow is poor, and ingot quality cannot ensure, on the contrary, if smelting temperature is higher than 1250 DEG C, metal loss is excessive, affects economical effectiveness, and obnoxious flavour content can be too high, affects performance quality.
As preferably, the temperature of described extruding is 600-750 DEG C.If extrusion temperature is lower than 600 DEG C, the thermoplasticity of alloy reduces, and can not squeeze out smoothly, on the contrary, if extrusion temperature is higher than 750 DEG C, burning appears in material, cannot ensure quality product.
Compared with prior art, the manganese brass alloy that contains of the present invention has the following advantages:
1, the present invention is containing the composition of manganese brass alloy by appropriate design alloy, by the synergy produced between each element, and coordinate the thermal treatment before finished product, put forward heavy alloyed machinability, cutting ability further, carry heavy alloyed high temperature stability performance, the abrasion resistance properties of further optimized alloy and lower frictional coefficient, the microtexture in alloy is evenly distributed, meet the requirement for the manufacture of wear-resisting spare part, especially meet the requirement for the manufacture of turbo-supercharger.
2, the present invention uses electromagnetic agitating technology containing manganese brass alloy in the fusion process of preparation method, and further improve the precipitation of second-phase, the flowing optimizing molten metal in casting blank solidification process reaches the effect of crystal grain thinning, decreases the segregation of element.
Accompanying drawing explanation
Fig. 1 is for the present invention includes the microstructure of amplifying 500 times containing manganese brass alloy of α phase 8%, MnSi Compound Phase 3.5%.
Fig. 2 is for the present invention includes the microstructure of amplifying 500 times containing manganese brass alloy of α phase 12%, MnSi Compound Phase 3.5%.
Fig. 3 amplifies the microstructure of 500 times for the comparative alloy comprising α phase 25%, MnSi Compound Phase 3%.
Fig. 4 amplifies the microstructure of 500 times for the comparative alloy comprising α phase 60%, MnSi Compound Phase 6%.
Fig. 5 comprises the α phase being less than 1%, and the comparative alloy of MnSi Compound Phase 5.5% amplifies the microstructure of 500 times.
Fig. 6 amplifies the microstructure of 500 times for the comparative alloy comprising α phase 3%, MnSi Compound Phase 6.5%.
Embodiment
Be below specific embodiments of the invention, technical scheme of the present invention is further described, but the present invention is not limited to these embodiments.
Raw material in embodiments of the present invention all adopts the conventional element such as electrolytic copper, zinc ingot metal, electrolytic manganese, electrolytic aluminum, industrial pure silicon, technically pure iron, electrolytic nickel, electrolytic tin, electrolytic cobalt, borax, electrolysis bismuth, industrial star antimony, pure tellurium, pure selenium.
Table 1: the composition of brass alloys described in embodiment 1-10 and weight percent thereof
Table 2: the composition of brass alloys described in embodiment 11-20 and weight percent thereof
Table 3: the composition of brass alloys described in embodiment 21-25 and weight percent thereof
The extruding of table 4: embodiment of the present invention 1-10 and heat treated parameter
The extruding of table 5: embodiment of the present invention 11-20 and heat treated parameter
The extruding of table 6: embodiment of the present invention 11-20 and heat treated parameter
Embodiment 1
Batching is taken containing the composition of manganese brass alloy and weight percent thereof by described in table 1 embodiment 1, take electrolytic copper, zinc ingot metal, electrolytic manganese, electrolytic aluminum, industrial pure silicon respectively, first electrolytic copper is dried, adopt medium frequency induction melting furnace to be heated to 950-1250 DEG C to melt, adopt calcining charcoal to cover; Then in electrolyte plating solution, add zinc ingot metal, electrolytic manganese, industrial pure silicon be incubated, then add the electrolytic aluminum after oven dry, after molten even, drag for slag, then carry out level or vertical casting, obtain containing manganese brass alloy ingot casting;
Carry out extruding, stretching and thermal treatment according to the parameter described in table 4 embodiment 1 containing manganese brass alloy ingot casting by what obtain, finally obtain alloy bar base.
Embodiment 2-10
Batching is taken containing the composition of manganese brass alloy and weight percent thereof respectively by described in table 1 embodiment 2-10, take electrolytic copper, zinc ingot metal, electrolytic manganese, electrolytic aluminum, industrial pure silicon, technically pure iron, electrolytic nickel, electrolytic tin respectively, first electrolytic copper is dried, adopt medium frequency induction melting furnace to be heated to 950-1250 DEG C to melt, adopt calcining charcoal to cover; Then in electrolyte plating solution, zinc ingot metal, electrolytic manganese, industrial pure silicon is added, and one or both adding in technically pure iron, electrolytic nickel are incubated, add the electrolytic tin after oven dry and/or electrolytic aluminum again, after molten even, drag for slag, then carry out level or vertical casting, obtain containing manganese brass alloy ingot casting;
Carry out extruding, stretching and thermal treatment according to the parameter described in table 4 embodiment 2-10 respectively containing manganese brass alloy ingot casting by what obtain, finally obtain alloy bar base.
Embodiment 11-20
Batching is taken containing the composition of manganese brass alloy and weight percent thereof respectively by described in table 2 embodiment 11-20, take electrolytic copper, zinc ingot metal, electrolytic manganese, electrolytic aluminum, industrial pure silicon, electrolytic cobalt, borax, electrolysis bismuth, industrial star antimony, pure tellurium, pure selenium respectively, first electrolytic copper is dried, adopt medium frequency induction melting furnace to be heated to 950-1250 DEG C to melt, adopt calcining charcoal to cover; Then in electrolyte plating solution, zinc ingot metal, electrolytic manganese, industrial pure silicon is added, and add electrolytic cobalt, borax, electrolysis bismuth, industrial star antimony, pure tellurium, pure selenium one or more be incubated, add the electrolytic aluminum after oven dry again, after molten even, drag for slag, then carry out level or vertical casting, obtain containing manganese brass alloy ingot casting;
Carry out extruding, stretching and thermal treatment according to the parameter described in table 5 embodiment 11-20 respectively containing manganese brass alloy ingot casting by what obtain, finally obtain alloy bar base.
Embodiment 21-25
Batching is taken containing the composition of manganese brass alloy and weight percent thereof respectively by described in table 3 embodiment 21-25, take electrolytic copper, zinc ingot metal, electrolytic manganese, electrolytic aluminum, industrial pure silicon, technically pure iron, electrolytic nickel, electrolytic tin, phosphorus, lanthanum, electrolytic cobalt, borax, electrolysis bismuth, industrial star antimony, pure tellurium, pure selenium respectively, first electrolytic copper is dried, adopt medium frequency induction melting furnace to be heated to 950-1250 DEG C to melt, adopt calcining charcoal to cover; Then in electrolyte plating solution, zinc ingot metal, electrolytic manganese, technically pure iron, industrial pure silicon is added, and one or more adding in electrolytic nickel, electrolytic cobalt, borax, electrolysis bismuth, industrial star antimony, pure tellurium, pure selenium, phosphorus, lanthanum, be incubated, add the electrolytic tin after oven dry and/or electrolytic aluminum again, after molten even, drag for slag, then carry out level or vertical casting, obtain containing manganese brass alloy ingot casting.
Carry out extruding, stretching and thermal treatment according to the parameter described in table 6 embodiment 21-25 respectively containing manganese brass alloy ingot casting by what obtain, finally obtain alloy bar base.
Comparative example 1
Batching is taken: copper 57.68%, manganese 2.52%, aluminium 1.54%, iron 0.80%, silicon 1.05%, lead 0.05%, tin 0.07%, nickel 0.18% by the following composition containing manganese brass alloy and weight percent thereof, surplus is zinc and inevitable impurity, to prepare burden melting, extrude at 705 DEG C, stretch, make alloy bar base.
Comparative example 2
The trade mark is selected to be the alloy of C93200: copper 83.51%, iron 0.05%, silicon 0.05%, plumbous 7.2%, tin 7.1%, surplus is zinc and inevitable impurity, this alloy is carried out melting, extruding, stretching and thermal treatment by the technique described in embodiment 1, makes alloy bar base.
Comparative example 3
The trade mark is selected to be the alloy of C67420: copper 57.91%, manganese 2.05%, aluminium 1.02%, iron 0.35%, silicon 0.53%, plumbous 0.50%, tin 0.02%, nickel 0.02%, surplus is zinc and inevitable impurity, this alloy is carried out melting, extruding, stretching and thermal treatment by the technique described in embodiment 1, makes alloy bar base.
Detected result:
1, embodiment 1-25 and comparative example interalloy rod base microtexture in Phase Proportion (following Phase Proportion all by volume percentages) and grain fineness number in Table 7-9.
Table 7: the Phase Proportion of embodiment of the present invention 1-10 alloy and grain fineness number
Table 8: the Phase Proportion of embodiment of the present invention 11-20 alloy and grain fineness number
The Phase Proportion of table 9: embodiment of the present invention 21-25 and comparative example 1-3 alloy and grain fineness number
By reference to the accompanying drawings, in accompanying drawing, Fig. 1 amplifies the microstructure of 500 times for what the present invention includes α phase 8%, MnSi Compound Phase 3.5% containing manganese brass alloy; Fig. 2 is for the present invention includes the microstructure of amplifying 500 times containing manganese brass alloy of α phase 12%, MnSi Compound Phase 3.5%; Fig. 3 amplifies the microstructure of 500 times for the comparative alloy comprising α phase 25%, MnSi Compound Phase 3%; Fig. 4 amplifies the microstructure of 500 times for the comparative alloy comprising α phase 60%, MnSi Compound Phase 6%; Fig. 5 be not after heat treatment comprise the α phase being less than 1%, the comparative alloy of MnSi Compound Phase 5.5% amplifies the microstructure of 500 times; Fig. 6 amplifies the microstructure of 500 times for the comparative alloy comprising α phase 3%, MnSi Compound Phase 6.5%.
Comparison diagram 1, Fig. 2, Fig. 3, Fig. 4 find, when Compound Phase is within the scope of 1-6%, Fig. 3 contains the alloy of 25% α phase, obviously declining appears in its cutting ability and abrasion resistance properties, all can cause disadvantageous effect to following process and application, Fig. 4 contains the alloy of 60% α phase, and its impact is even more serious.Comparison diagram 1, Fig. 5 find, when Compound Phase is within the scope of 1-6%, Fig. 5 is without the heat treated alloy containing being less than 1% α phase, and its plasticity is poor, causes part easily to occur breakage in application process, causes part life to decline.Comparison diagram 1 and Fig. 6 find, when α phase is in 1-15% scope, Fig. 6 contains when being greater than 6% Compound Phase, due to the increase of Hard Inclusion, greatly can increase in the alloy machine course of processing to the wearing and tearing of cutter, be unfavorable for the control of cost.
In sum, by amplifying the microstructure discovery of 500 times in above-mentioned contrast accompanying drawing 1-6 present pre-ferred embodiments containing manganese brass alloy and comparative alloy: the present invention is containing the α phase of 1-15% in manganese brass alloy, the MnSi Compound Phase of 1-6% is evenly distributed among β phase constitution, material structure after extruding is evenly distributed, improve the high temperature stability performance of alloy when subsequent high temperature stability is tested, therefore under the condition of 200 DEG C, still can keep long thermal stability.Because tissue distribution is even, further improve the cutting ability of alloy under unleaded condition.
2, Mechanics Performance Testing: get the alloy bar base made in embodiment of the present invention 1-25 and comparative example 1-3, carries out mechanics properties testing according to the standard of GB/T 228, universal testing machine carries out, and the detected result of its tensile strength is in Table 10-12; Carry out hardness determination according to the standard of GB/T231, the detected result of its hardness is in Table 10-12.
3, cutting test: get the alloy bar base made in embodiment of the present invention 1-25 and comparative example 1-3, adopt lathe under identical experiment condition, record the cutting force of each alloy, and calculate the machinability index (cutting resistance × 100% of [machinability index]=[C36000 point cutting resistance]/each alloy) of each alloy phase for C36000 alloy thus.Cutting experiment condition is as follows, cutting tool: WC base superhard alloy, cutting speed, 120m/min, depth of cut: 0.5mm, and the amount of feed: 0.087mm/ encloses, cutting state: dry turning.Concrete detected result is in Table 10-12.
4, heat stability testing: get the alloy bar base made in embodiment of the present invention 1-25 and comparative example 1-3, according to the standard of GB/T 228, sample is placed in 200 DEG C of holding furnaces and carries out long-time pyroprocessing, time is 100 hours, tensile strength test is carried out according to the standard of GB/T 228 after cooling, the method of calculation of thermostability are as follows, tensile strength after [thermostability]=pyroprocessing/original tensile strength, concrete detected result is in Table 10-12.
Table 10: the performance test results of embodiment 1-10 alloy
Table 11: the performance test results of embodiment 11-20 alloy
The performance test results of table 12: embodiment 21-25 and comparative example 1-3 alloy
In sum, of the present invention have good mechanical property, cutting ability and thermostability containing manganese brass alloy simultaneously, and under 200 DEG C of conditions, be incubated 100h, still can keep more than 75% of original intensity, its tensile strength is greater than 590MPa, and hardness is greater than 140HB.What technical solution of the present invention was made can be used as manufacturing wear-resisting spare part containing manganese brass alloy, especially manufactures the wear-resisting spare parts such as turbo-supercharger.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (10)
1., containing a manganese brass alloy, the composition of this alloy comprises copper, manganese, aluminium, silicon, zinc, it is characterized in that:
Described comprises (by volume percentages) containing the microtexture of manganese brass alloy after thermal treatment before finished product: the α phase of 1-15%, the MnSi Compound Phase of 1-6%, is greater than the β phase of 80%.
2. according to claim 1 containing manganese brass alloy, it is characterized in that, should comprise by weight percentage containing the composition of manganese brass alloy: copper 56-60%, manganese 0.5-3.0%, aluminium 0.5-3.0%, silicon 0.05-2%, plumbous <0.1%, surplus is zinc and inevitable impurity.
3. according to claim 1 and 2 containing manganese brass alloy, it is characterized in that, described one or more compositions also comprised containing manganese brass alloy in chosen from Fe, tin, nickel, phosphorus, lanthanum, the total content of described composition is less than 2% by weight percentage.
4. according to claim 1 and 2 containing manganese brass alloy, it is characterized in that, described also comprises containing manganese brass alloy one or more compositions be selected from cobalt, boron, bismuth, antimony, tellurium, selenium, and the total content of described composition is less than 2% by weight percentage.
5. according to claim 3 containing manganese brass alloy, it is characterized in that, described also comprises containing manganese brass alloy one or more compositions be selected from cobalt, boron, bismuth, antimony, tellurium, selenium, and the total content of described composition is less than 2% by weight percentage.
6. according to claim 3 containing manganese brass alloy, it is characterized in that, described containing manganese brass alloy microtexture after heat treatment also comprise in AlFe Compound Phase, NiSi Compound Phase one or both.
7. according to claim 1 and 2 containing manganese brass alloy, it is characterized in that, the described grain fineness number containing manganese brass alloy is 10 μm-50 μm.
8. according to claim 1 and 2 containing manganese brass alloy, it is characterized in that, the described tensile strength containing manganese brass alloy is greater than 590MPa, hardness is greater than 140HB, cutting ability is greater than 69%, under 200 DEG C of conditions, be incubated 100h, still can keep more than 75% of original intensity.
9. containing a preparation method for manganese brass alloy, the method comprises: before batching, melting, extruding, stretching, finished product, thermal treatment obtains containing manganese brass alloy;
Before described finished product, thermal treatment concrete steps are: will heat-treat in heat treatment furnace containing manganese brass alloy blank, rise to 250-400 DEG C with the average heating rate being not more than 200 DEG C/min to be incubated, soaking time, at more than 1h, cools with the average rate of cooling being not more than 300 DEG C/min after insulation.
10., according to claim 9 containing the preparation method of manganese brass alloy, it is characterized in that, in fusion process, also coordinate induction stirring to produce.
Priority Applications (1)
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107974573A (en) * | 2017-11-29 | 2018-05-01 | 九牧厨卫股份有限公司 | A kind of silicon brass alloy containing manganese easy cutting and its preparation method and application |
| CN108085535A (en) * | 2016-11-21 | 2018-05-29 | 贵溪骏达特种铜材有限公司 | A kind of gold stamping roller brass alloys |
| CN108165908A (en) * | 2018-01-26 | 2018-06-15 | 宁波华成阀门有限公司 | A kind of high abrasion manganese brass and its manufacturing method |
| CN108285988A (en) * | 2018-01-31 | 2018-07-17 | 宁波博威合金材料股份有限公司 | Precipitation strength type copper alloy and its application |
| CN109072340A (en) * | 2016-05-20 | 2018-12-21 | 奥托福克斯两合公司 | Unleaded high-strength brass alloy and high-strength brass alloy product |
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| TWI700380B (en) * | 2018-12-19 | 2020-08-01 | 韓商豐山股份有限公司 | Free-cutting leadless copper alloy with no lead and bismuth |
| CN111575529A (en) * | 2020-07-03 | 2020-08-25 | 湖州盛义铜管工业有限公司 | High-strength wear-resistant antifriction multi-element manganese brass alloy and production process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1800426A (en) * | 2004-07-01 | 2006-07-12 | 同和矿业株式会社 | Copper-based alloy and manufacturing method therefor |
| CN102443716A (en) * | 2010-09-30 | 2012-05-09 | 路达(厦门)工业有限公司 | Low cost brass alloy and its manufacture method |
| JP2013155407A (en) * | 2012-01-30 | 2013-08-15 | Mitsubishi Materials Corp | Copper alloy and cast product |
| CN104294082A (en) * | 2014-11-03 | 2015-01-21 | 宁波博威合金材料股份有限公司 | Brass alloy |
-
2015
- 2015-04-27 CN CN201510205771.9A patent/CN104831115A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1800426A (en) * | 2004-07-01 | 2006-07-12 | 同和矿业株式会社 | Copper-based alloy and manufacturing method therefor |
| CN102443716A (en) * | 2010-09-30 | 2012-05-09 | 路达(厦门)工业有限公司 | Low cost brass alloy and its manufacture method |
| JP2013155407A (en) * | 2012-01-30 | 2013-08-15 | Mitsubishi Materials Corp | Copper alloy and cast product |
| CN104294082A (en) * | 2014-11-03 | 2015-01-21 | 宁波博威合金材料股份有限公司 | Brass alloy |
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| JP7178903B2 (en) | 2016-05-20 | 2022-11-28 | オットー フックス カーゲー | High-strength brass alloys and high-strength brass alloy products |
| JP2019519666A (en) * | 2016-05-20 | 2019-07-11 | オットー フックス カーゲー | High strength brass alloy and high strength brass alloy products |
| US11359263B2 (en) | 2016-05-20 | 2022-06-14 | Otto Fuchs Kommanditgesellschaft | Lead-free high tensile brass alloy and high tensile brass alloy product |
| CN108085535A (en) * | 2016-11-21 | 2018-05-29 | 贵溪骏达特种铜材有限公司 | A kind of gold stamping roller brass alloys |
| CN107974573A (en) * | 2017-11-29 | 2018-05-01 | 九牧厨卫股份有限公司 | A kind of silicon brass alloy containing manganese easy cutting and its preparation method and application |
| CN108165908A (en) * | 2018-01-26 | 2018-06-15 | 宁波华成阀门有限公司 | A kind of high abrasion manganese brass and its manufacturing method |
| CN108285988A (en) * | 2018-01-31 | 2018-07-17 | 宁波博威合金材料股份有限公司 | Precipitation strength type copper alloy and its application |
| CN108285988B (en) * | 2018-01-31 | 2019-10-18 | 宁波博威合金材料股份有限公司 | Precipitation strength type copper alloy and its application |
| CN109295404A (en) * | 2018-09-01 | 2019-02-01 | 宁波正元铜合金有限公司 | A kind of wearable brass alloy based on the control of silicomanganese compound phase-variable |
| TWI700380B (en) * | 2018-12-19 | 2020-08-01 | 韓商豐山股份有限公司 | Free-cutting leadless copper alloy with no lead and bismuth |
| US11692243B2 (en) | 2018-12-19 | 2023-07-04 | Poongsan Corporation | Free-cutting leadless copper alloy with no lead and bismuth |
| CN111575529A (en) * | 2020-07-03 | 2020-08-25 | 湖州盛义铜管工业有限公司 | High-strength wear-resistant antifriction multi-element manganese brass alloy and production process thereof |
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