CN103789575B - A kind of zinc alloy material of synchromesh gear and synchromesh gear production technique - Google Patents
A kind of zinc alloy material of synchromesh gear and synchromesh gear production technique Download PDFInfo
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Abstract
The present invention relates to technical field of alloy material, particularly relate to a kind of zinc alloy material and synchromesh gear production technique of synchromesh gear, the zinc alloy material of synchromesh gear comprises the element of following weight percent: zinc 88 ~ 93%, aluminium 5 ~ 10%, copper 1 ~ 2%, magnesium 0.5 ~ 1%, cadmium 0.1 ~ 0.5%, iron 0.01 ~ 0.05%, nickel 0.005 ~ 0.01%.The synchromesh gear that alloy material of the present invention is obtained, its tensile strength is up to 450Mpa, and shearing resistance is up to 280Mpa, and unit elongation is greater than 8, wear resisting property, and surface hardness is 2000 ~ 2500HV, and wear resistance is good.The complete processing of synchromesh gear of the present invention is simple, and process period is short, and working (machining) efficiency is high, and production cost is low.
Description
Technical field
The present invention relates to technical field of alloy material, particularly relate to a kind of zinc alloy material and synchromesh gear production technique of synchromesh gear.
Background technology
In machine building industry, manufacture gear material used by many kinds, there are steel, iron, copper alloy and non-metallic material etc., generally maximum with steel gear application, but mostly steel gear is to be manufactured by mechanical workout, and its wear resisting property is poor, the gear of other materials, due to the advantage that respectively has some different and defect, be only applicable in the occasion of some special requirements.At present, the operation that traditional mechanical workout makes gear comprises blanking, forges, rough turn, normalizing, finish turning, gear hobbing, gear shaping, chamfering, chamfered edge and grinding out etc., traditional Gear Production operation is many, technique is more complicated, and the production cycle is long, production efficiency is low, and production cost is also higher.Gear of the prior art is made up of aluminum alloy materials mostly, and before its wear resistance, tension, shareholder, shearing resistance and extension property all have much room for improvement.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of zinc alloy material and synchromesh gear production technique of synchromesh gear are provided, the synchromesh gear of this zinc alloy material has the advantage that wear resistance is good, tensile strength is high, good extending performance, shearing resistance are high, synchromesh gear production technique is simple, and production efficiency is high.
The present invention is achieved through the following technical solutions.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 88 ~ 93%
Aluminium 5 ~ 10%
Copper 1 ~ 2%
Magnesium 0.5 ~ 1%
Cadmium 0.1 ~ 0.5%
Iron 0.01 ~ 0.05%
Nickel 0.005 ~ 0.01%.
Preferably, a kind of zinc alloy material of synchromesh gear, comprises the element of following weight percent:
Zinc 90 ~ 92%
Aluminium 6 ~ 8%
Copper 1 ~ 2%
Magnesium 0.5 ~ 0.7%
Cadmium 0.1 ~ 0.2%
Iron 0.01 ~ 0.02%
Nickel 0.005 ~ 0.007%.
The weight percent of zinc (Zn) is: 88 ~ 93%.Zinc is the slightly light blue metal of a kind of silvery white, and density is 7.14 grams/cc, and fusing point is 419.5 DEG C.At room temperature, property is more crisp; When 100 ~ 150 DEG C, deliquescing; After 200 DEG C, become fragile again.Zinc has applicable mechanical property.The processing characteristics of zinc alloy is excellent, pass reduction can reach 60% ~ 80%, middle pressure superior performance, can deep-drawing be carried out, and there is self lubricity, extend die life, available soldering or resistance welding or electric-arc welding (need in helium) be welded, surface can carry out electroplating, process of painting, and machinability is good, has superior superplastic ability.
The weight percent of aluminium (Al) is: 5 ~ 10%.Hardness and tensile strength that aluminium element contributes to increasing material is added in zinc alloy material; Can increase its wear resistance containing Al in zinc alloy, in order to improve tensile strength and the wear resistance of material, the weight percent of Al should control more than 5%.But add toughness and processing characteristics that excessive Al can affect material, cause the toughness of material and processibility to decline in order to avoid Al is too high, the weight percent of Al should control below 10%.In the present invention, the weight percent of Al is 5 ~ 10%, both can meet tensile strength and the wear resistance requirement of material, can ensure again toughness and the processibility of material, and preferably, the weight percent of Al is 6 ~ 8%, and more preferably, the weight percent of Al is 7%.
The weight percent of copper (Cu) is: 1 ~ 2%.Copper (Cu) can improve the stability of alloy material, hardness and the wear resistance of material can be improved, in zinc alloy, add Cu can also improve shearing resistance and toughness, particularly atomospheric corrosion performance, in order to improve shearing resistance and the wear resistance of zinc alloy material by adding Cu, the weight percent of Cu should control more than 1%.But add excessive copper and can reduce stainless mechanical property, destroy the mechanical property of zinc alloy material, zinc alloy material can be made to add at bore hole etc. and produce red brittleness man-hour, therefore, cause the hot workability of material and plasticity to decline in order to avoid Cu is too high, the weight percent of Cu should control below 2%.In the present invention, the weight percent of Cu is 1 ~ 2%, both can meet shearing resistance and the wear resistance requirement of material, can meet again hot workability and the plasticity requirements of material, preferably, the weight percent of Cu is 1.3 ~ 1.8%, and more preferably, the weight percent of Cu is 1.5%.
The weight percent of magnesium (Mg) is: 0.5 ~ 1%.Magnesium is one of the lightest structural metallic material, has again specific tenacity and specific rigidity is high, damping and amortization and the advantage such as machinability is good.Magnesium alloy have lightweight, specific tenacity is high, damping good, thermal fatigue property is good, not easily aging, having again good thermal conductivity, extraordinary extrusion process performance, is the high performance structures material of new generation of alternative iron and steel, aluminium alloy and engineering plastics.In zinc alloy material, add Mg can improve the specific tenacity of alloy material, thermal fatigue property and die casting performance, therefore the weight percent of Mg should control more than 0.5%; But add the tensile strength that excessive Mg can reduce alloy material, the strength degradation of gear, weight can be made to increase, therefore, cause the strength degradation of material in order to avoid Mg is too high, the weight percent of Mg should control below 1%.In the present invention, the weight percent of Mg is 0.5 ~ 1%, both can meet the specific tenacity of material, thermal fatigue property and die casting performance requirement, can meet again the requirement of strength of material, preferably, the weight percent of Mg is 0.6 ~ 0.8%, and more preferably, the weight percent of Mg is 0.75%.
The weight percent of cadmium (Cd) is: 0.1 ~ 0.5%.Cadmium can be made into a lot of alloy as group of alloys soil unit, containing the zinc alloy of cadmium 0.1% ~ 0.5%, has higher extensibility and wear resistance.
The weight percent of iron (Fe) is: 0.01 ~ 0.05%.Iron is glossiness silvery white metal, and firmly have ductility, fusing point is 1535 DEG C, boiling point 3000 DEG C, has good plasticity-and thermal conductivity.The ferro element that the present invention adds is the iron powder of wrought iron, and wrought iron impurities is few, and close to pure iron, toughness is strong.The consumption of iron powder of the present invention is less than that the snappiness of 0.1% alloy material is poor, extensibility is poor, and then the density of alloy material is inadequate more than 0.5% for the consumption of iron powder, and die cast effect is poor.In zinc alloy material, add the ferro element of 0.01 ~ 0.05%, extension property and the die casting performance of alloy material can be improved.
The weight percent of nickel (Ni) is: 0.005 ~ 0.01%.Ni all has positive effect to improving the corrosion resistance nature of material, mechanical property and hot workability, the interpolation of Ni can also improve plasticity and the toughness of zinc alloy material, amount can play the effect of solution strengthening time few, also precipitate can be formed with other element when measuring many, play the effect of ageing strengthening, in order to effectively make alloy material stablize by adding Ni, and improve tensile strength and the erosion resistance of material, the weight percent of Ni should control more than 0.005%.But adding Ni in a large number can make Ms point be reduced to the situation that cannot obtain martensitic stucture with common quench treatment, thus also cannot make the high strength required for gear acquisition, the corrosion resistance nature of material also can be made to reduce, and Ni shortage of resources, price is more expensive, and should practice every conceivable frugality use, therefore, cause the tensile strength of material and erosion resistance to reduce in order to avoid Ni is too high and cost-saving, the weight percent of Ni should control below 0.01%.In the present invention, the weight percent of Ni is 0.005 ~ 0.01%, both can meet tensile strength and the erosion resistance requirement of material, can save production cost again, preferably, the weight percent of Ni is 0.005 ~ 0.008%%, and more preferably, the weight percent of Ni is 0.006%.
Wherein, described zinc alloy material also includes element silicon, and its weight percent is 1 ~ 6%.
The weight percent of silicon (Si) is: 1 ~ 6%.Element silicon plays reductor and improves material erosion resistance, also be the element of the intensity increasing alloy material simultaneously, can solid solution be there is in silicon, thus generation makes stacking fault energy reduce and makes the improved effect of mechanical characteristics, therefore, in order to effectively improve intensity and the erosion resistance of material, and play good desoxydatoin, the weight percent of silicon should control more than 1%.But add a large amount of silicon to the hot workability of material and toughness unfavorable, also unfavorable to normal temperature compacted under, cause the hot workability of material and toughness to decline in order to avoid silicon is too high, the weight percent of silicon should control below 6%.In the present invention, the weight percent of silicon is 1 ~ 6%, both intensity and the erosion resistance requirement of material can have been met, hot workability and the toughness of material can be ensured again, and play certain lubricity, put forward heavy alloyed mobility, improve the castability of alloy, preferably, the weight percent of silicon is 2 ~ 5%, and more preferably, the weight percent of silicon is 4%, element silicon is disperse educt Si hard phase in alloy material, and be evenly distributed, be conducive to the wear resistance of raising zinc alloy gear, fatigue resistance and seizure resistance, reduce the linear expansivity of zinc alloy.
Wherein, described zinc alloy material also includes manganese element, and its weight percent is 0.005 ~ 0.007%.
The weight percent of manganese (Mn) is: 0.005 ~ 0.007%.Manganese element cost is low, replacement nickel can form austenite, when by alloy material melting and refining, Mn is used as reductor, alloy material has very large strengthening effect, can improve the shearing resistance of alloy material, hardness and wear resistance, in order to ensure shearing resistance and the hardness of material, the weight percent of Mn should control more than 0.005%.But Mn can produce disadvantageous effect to the oxidation-resistance under high temperature, the toughness of material and erosion resistance are reduced, cause the toughness of material and erosion resistance to decline in order to avoid Mn is too high, the weight percent of Mn should control below 0.007%.In the present invention, the weight percent of Mn is 0.005 ~ 0.007%, both can meet shearing resistance and the wear resisting property requirement of material, can ensure again toughness and the erosion resistance of material, and preferably, the weight percent of Mn is 0.006%.
Wherein, described zinc alloy material also includes lead element, and its weight percent is 0.003 ~ 0.005%.
The weight percent of plumbous (Pb) is: 0.003 ~ 0.005%.Lead is argenteous metal, very soft, just can mark vestige on its surface with nail.In alloy material, the lead of interpolation 0.003 ~ 0.005% is conducive to the tensile property and the die casting performance that promote zinc alloy material.
Wherein, described zinc alloy material also includes titanium elements, and its weight percent is 0.005 ~ 0.007%.
The weight percent of titanium (Ti) is: 0.005 ~ 0.007%.Titanium elements can improve the recrystallization temperature of alloy material, makes the grain refining of alloy material, and improve the tensile strength of alloy material, therefore, in order to improve tensile strength and the stability of material, the weight percent of Ti should control more than 0.005%.But Ti also can have influence on the surface quality of alloy material as inclusion, simultaneously because Ti is oxidizable in adition process, can bring certain difficulty to the die cast of alloy material, in order to avoid Ti causes the manufacturing process of material complicated, the weight percent of Ti should control below 0.007%.The weight percent of Ti of the present invention is 0.005 ~ 0.007%, both can meet tensile strength and the stability requirement of material, can ensure again the quality of material, simplified manufacturing technique, and preferably, the weight percent of Ti is 0.006%.
Wherein, the chemical composition of described element meets following formula:
94.5%≤Zn+Cu+Al≤99.5%……（1）
0.16%≤10（Ni+Fe）≤Mg+Cd……（2）
6.5%≤Al+Cu+4Cd+20Fe≤13%……（3）
Wherein, Zn, Cu, Al, Ni, Fe, Mg and Cd represent the weight percent of each element respectively.
(Zn+Cu+Al) of formula (1) affects the extension property of alloy material and the factor of wear resistance, the intensity of zinc itself and hardness are not high, but after adding the alloying element such as aluminium, copper, its intensity and hardness all greatly improve, its comprehensive mechanical performance is good, and creep-resistant property is also significantly enhanced.Be limited in 94.5% ~ 99% scope in the present invention, when (Zn+Cu+Al) is when being less than 94.5%, the material ductility obtained can be poor, and wear resistance is poor; When (Zn+Cu+Al) is greater than 99%, the materials hot working obtained and plasticity poor, therefore, from the extensibility and the wear resistance that improve material, (Zn+Cu+Al) should control more than 94.5%, from the hot workability and the plasticity that improve material, (Zn+Cu+Al) should control below 99%.
(Ni+Fe) of formula (2) affects the tensile strength of material and the factor of toughness, 0.16%≤the 10(Ni+Fe limited in the present invention) within the scope of≤Mg+Cd, Fe, Ni have the effect of tensile strength, and the effect of the composite use of Fe and Ni is more remarkable, prove by experiment, when (Ni+Fe) is less than 0.0.16%, the alloy material toughness obtained is poor, and tensile strength is little; When (Ni+Fe) is greater than Mg+Cd, the plasticity of material and hardness is caused to decline.
(Al+Cu+4Cd+20Fe) of formula (3) is the factor affecting material hardness and wear resistance, in 6.5% ~ 13% scope be limited in the present invention, Al, Cu, Cd and Fe can improve material and hardness and wear resistance, and the effect of four kinds of composite uses of element is more remarkable, prove by experiment, when (Al+Cu+4Cd+20Fe) is less than 6.5%, the material hardness obtained and wear resistance poor, when (Al+Cu+4Cd+20Fe) is greater than 13%, cause Drawing abillity to decline, and cost increase.Therefore, from the hardness and the wear resistance that improve material, (Al+Cu+4Cd+20Fe) should control more than 6.5%, and from raising Drawing abillity and saving cost, (Al+Cu+4Cd+20Fe) should control below 13%.
A production technique for synchromesh gear, its procedure of processing comprises:
Steps A, dropped into successively in smelting furnace by the raw material of above-mentioned weight percent, make each raw material high-temperature fusion, melt temperature is 400 ~ 500 DEG C; Preferably, melt temperature is 400 ~ 430 DEG C.
Step B, stir the raw material in above-mentioned melting process, the fusion time is 3 ~ 6h, stirs once, stir 1 ~ 3min at every turn every 30 ~ 45min; Preferably, stir once every 30min, stir 2min at every turn.
Step C, utilize self-feeding transfer roller by the delivery of molten metal that stirs in holding furnace, molten metal is injected into die cast in pressure die-casting machine by holding furnace automatically, and cooling, obtains the thick finished product of synchromesh gear; Self-feeding transfer roller be with automatic feeding system with the use of transfer roller, it can by the molten metal automatic transport that is stirred in holding furnace,
Step D, precision work: fin cutting, burr are carried out to the thick finished product of synchromesh gear with deburring, burr machine, and with cylinder boring machine, Boring is carried out to gear, obtain synchromesh gear finished product.Fin cutting, burr machine to be application number that the applicant submits to be 201420054873.6 gear chamfering, deburring burr machine, can by the burr of thick for synchromesh gear finished product, the disposable removal of burr, and the chamfered edge processing of synchromesh gear can be realized simultaneously, finally utilize cylinder boring machine to carry out Boring to synchromesh gear red heart, synchromesh gear finished product can be obtained.
Wherein, in described step C, cooling time is 1 ~ 10 second.Preferably, cooling time is 1 ~ 5 second, and more preferably, cooling time is 2 seconds.
Wherein, described steps A is 3.5 ~ 7h to the process period of described step D.Preferably, described steps A is 3.5 ~ 5h to the process period of described step D, and more preferably, described steps A is 4h to the process period of described step D.
Beneficial effect of the present invention is: the synchromesh gear that alloy material of the present invention is obtained, and its tensile strength is up to 450Mpa, and shearing resistance is up to 280Mpa, and unit elongation is greater than 8, wear resisting property, and surface hardness is 2000 ~ 2500HV, and wear resistance is good.The complete processing of synchromesh gear of the present invention is simple, and process period is short, and working (machining) efficiency is high, and production cost is low.
Advantage of the present invention also includes:
(1) zinc alloy material of the present invention adds Cu, Al, Cd, Fe, Mg and Ni element, the extension property of material, tensile strength, shearing resistance and wear resistance can be significantly improved, intensity and the hardness of obtained synchromesh gear improve greatly, the comprehensive mechanical performance of material is good, and creep-resistant property is also significantly enhanced, be particularly useful in household appliances product.
(2) zinc alloy material of the present invention is also added with element silicon, Si plays reductor and improves material erosion resistance, also be the element of the intensity increasing alloy material, can there is solid solution in Si simultaneously, thus generation makes stacking fault energy reduce and makes the improved effect of mechanical characteristics.
(3) zinc alloy material of the present invention is also added with manganese element, and its raw materials cost is low, and during by alloy material melting and refining, Mn is used as reductor, and alloy material has very large strengthening effect, can improve the shearing resistance of alloy material, hardness and wear resistance.
(4) zinc alloy material of the present invention is also added with lead element, and Pb is conducive to the tensile property and the die casting performance that promote zinc alloy material.
(5) zinc alloy material of the present invention is also added with titanium elements, and Ti can improve the recrystallization temperature of alloy material, makes the grain refining of alloy material, improves tensile strength and the stability of alloy material, simplified manufacturing technique.
(6) make with traditional mechanical workout gear operation (comprise blanking, forge, rough turn, normalizing, finish turning, gear hobbing, gear shaping, chamfering, chamfered edge and grinding out etc.) compare with the process for processing time (being generally 10 ~ 15 days), the present invention utilizes pressure die-casting machine one-step die casting, production technique is simple, process period is short, the cooling and shaping time of gear only needs 1 ~ 10 second, and the process for processing of whole gear only needs 3.5 ~ 7h, with short production cycle, working (machining) efficiency is high.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
embodiment 1.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 93%, aluminium 5%, copper 1.15%, magnesium 0.55%, cadmium 0.28%, iron 0.015%, nickel 0.005%.
A production technique for synchromesh gear, its procedure of processing comprises:
Steps A, dropped into successively in smelting furnace by the raw material of above-mentioned weight percent, make each raw material high-temperature fusion, melt temperature is 400 DEG C;
Step B, stir the raw material in above-mentioned melting process, the fusion time is 6h, stirs once, stir 3min at every turn every 30min;
Step C, utilize self-feeding transfer roller by the delivery of molten metal that stirs in holding furnace, molten metal is injected into die cast in pressure die-casting machine by holding furnace automatically, cooling, and cooling time is 1 second, obtains the thick finished product of synchromesh gear;
Step D, precision work: fin cutting, burr are carried out to the thick finished product of synchromesh gear with deburring, burr machine, and with cylinder boring machine, Boring is carried out to gear, obtain synchromesh gear finished product.
Wherein, described steps A is 7h to the process period of described step D.Here time reequilibrate once.
embodiment 2.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 92.5%, aluminium 5.5%, copper 1.2%, magnesium 0.62%, cadmium 0.15%, iron 0.024%, nickel 0.006%.
A production technique for synchromesh gear, its procedure of processing comprises:
Steps A, dropped into successively in smelting furnace by the raw material of above-mentioned weight percent, make each raw material high-temperature fusion, melt temperature is 430 DEG C;
Step B, stir the raw material in above-mentioned melting process, the fusion time is 5h, stirs once, stir 2min at every turn every 35min;
Step C, utilize self-feeding transfer roller by the delivery of molten metal that stirs in holding furnace, molten metal is injected into die cast in pressure die-casting machine by holding furnace automatically, cooling, and cooling time is 5 seconds, obtains the thick finished product of synchromesh gear;
Step D, precision work: fin cutting, burr are carried out to the thick finished product of synchromesh gear with deburring, burr machine, and with cylinder boring machine, Boring is carried out to gear, obtain synchromesh gear finished product.
Wherein, described steps A is 5.5h to the process period of described step D.
embodiment 3.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 92%, aluminium 6%, copper 1.2%, magnesium 0.65%, cadmium 0.1%, iron 0.044%, nickel 0.006%.
A production technique for synchromesh gear, its procedure of processing comprises:
Steps A, dropped into successively in smelting furnace by the raw material of above-mentioned weight percent, make each raw material high-temperature fusion, melt temperature is 500 DEG C;
Step B, stir the raw material in above-mentioned melting process, the fusion time is 3h, stirs once, stir 1min at every turn every 45min; Here stir and once spent nearly 4 hours, and within 3.5 hours, not to be inconsistent below.
Step C, utilize self-feeding transfer roller by the delivery of molten metal that stirs in holding furnace, molten metal is injected into die cast in pressure die-casting machine by holding furnace automatically, cooling, and cooling time is 10 seconds, obtains the thick finished product of synchromesh gear;
Step D, precision work: fin cutting, burr are carried out to the thick finished product of synchromesh gear with deburring, burr machine, and with cylinder boring machine, Boring is carried out to gear, obtain synchromesh gear finished product.
Wherein, described steps A is 3.5h to the process period of described step D.
embodiment 4.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 89%, aluminium 6.5%, copper 1.4%, magnesium 0.74%, cadmium 0.32%, iron 0.033%, nickel 0.007%, silicon 2%.
Wherein, described steps A is 4h to the process period of described step D.All the other production technique of the synchromesh gear of the present embodiment are identical with embodiment 1, repeat no more here.
embodiment 5.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 91.6%, aluminium 6%, copper 1.5%, magnesium 0.7%, cadmium 0.15%, iron 0.036%, nickel 0.008%, manganese 0.006%.
Wherein, described steps A is 5h to the process period of described step D.All the other production technique of the synchromesh gear of the present embodiment are identical with embodiment 1, repeat no more here.
embodiment 6.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 90.2%, aluminium 6.6%, copper 2%, magnesium 1%, cadmium 0.18%, iron 0.012%, nickel 0.005%, plumbous 0.003%.
Wherein, described steps A is 6.5h to the process period of described step D.All the other production technique of the synchromesh gear of the present embodiment are identical with embodiment 1, repeat no more here.
embodiment 7.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 90.5%, aluminium 7.2%, copper 1.67%, magnesium 0.5%, cadmium 0.1%, iron 0.019%, nickel 0.006%, titanium 0.005%.
Wherein, described steps A is 4h to the process period of described step D.All the other production technique of the synchromesh gear of the present embodiment are identical with embodiment 1, repeat no more here.
embodiment 8.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 88.5%, aluminium 8%, copper 1.6%, magnesium 0.72%, cadmium 0.13%, iron 0.038%, nickel 0.007%, silicon 1%, manganese 0.005%.
The production technique of the synchromesh gear of the present embodiment is identical with embodiment 1, repeats no more here.
embodiment 9.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 89%, aluminium 5.6%, copper 1.65%, magnesium 0.6%, cadmium 0.11%, iron 0.028%, nickel 0.008%, silicon 3%, plumbous 0.004%.
The production technique of the synchromesh gear of the present embodiment is identical with embodiment 2, repeats no more here.
embodiment 10.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 88.7%, aluminium 5%, copper 1.3%, magnesium 0.8%, cadmium 0.34%, iron 0.045%, nickel 0.009%, silicon 3.8%, titanium 0.006%.
The production technique of the synchromesh gear of the present embodiment is identical with embodiment 2, repeats no more here.
embodiment 11.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 90%, aluminium 7.4%, copper 1.75%, magnesium 0.61%, cadmium 0.2%, iron 0.025%, nickel 0.005%, manganese 0.005%, plumbous 0.005%.
The production technique of the synchromesh gear of the present embodiment is identical with embodiment 3, repeats no more here.
embodiment 12.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 88.2%, aluminium 9%, copper 1.4%, magnesium 0.95%, cadmium 0.4%, iron 0.034%, nickel 0.007%, lead 0.004%, titanium 0.005%.
The production technique of the synchromesh gear of the present embodiment is identical with embodiment 4, repeats no more here.
embodiment 13.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 88.3%, aluminium 5.1%, copper 1%, magnesium 0.52%, cadmium 0.21%, iron 0.047%, nickel 0.01%, silicon 4.8%, manganese 0.006%, titanium 0.007%.
A production technique for synchromesh gear, its procedure of processing comprises:
Steps A, dropped into successively in smelting furnace by the raw material of above-mentioned weight percent, make each raw material high-temperature fusion, melt temperature is 420 DEG C;
Step B, stir the raw material in above-mentioned melting process, the fusion time is 5.5h, stirs once, stir 2.5min at every turn every 30min;
Step C, utilize self-feeding transfer roller by the delivery of molten metal that stirs in holding furnace, molten metal is injected into die cast in pressure die-casting machine by holding furnace automatically, cooling, and cooling time is 2 seconds, obtains the thick finished product of synchromesh gear;
Step D, precision work: fin cutting, burr are carried out to the thick finished product of synchromesh gear with deburring, burr machine, and with cylinder boring machine, Boring is carried out to gear, obtain synchromesh gear finished product.
Wherein, described steps A is 6h to the process period of described step D.
embodiment 14.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 90%, aluminium 7.1%, copper 1.61%, magnesium 0.9%, cadmium 0.35%, iron 0.015%, nickel 0.008%, manganese 0.007%, lead 0.003%, titanium 0.007%.
A production technique for synchromesh gear, its procedure of processing comprises:
Steps A, dropped into successively in smelting furnace by the raw material of above-mentioned weight percent, make each raw material high-temperature fusion, melt temperature is 430 DEG C;
Step B, stir the raw material in above-mentioned melting process, the fusion time is 4h, stirs once, stir 2min at every turn every 30min;
Step C, utilize self-feeding transfer roller by the delivery of molten metal that stirs in holding furnace, molten metal is injected into die cast in pressure die-casting machine by holding furnace automatically, cooling, and cooling time is 3 seconds, obtains the thick finished product of synchromesh gear;
Step D, precision work: fin cutting, burr are carried out to the thick finished product of synchromesh gear with deburring, burr machine, and with cylinder boring machine, Boring is carried out to gear, obtain synchromesh gear finished product.
Wherein, described steps A is 4.5h to the process period of described step D.
embodiment 15.
A zinc alloy material for synchromesh gear, comprises the element of following weight percent:
Zinc 88%, aluminium 7.3%, copper 1%, magnesium 0.76%, cadmium 0.38%, iron 0.035%, nickel 0.009%, silicon 2.5%, manganese 0.005%, lead 0.005%, titanium 0.006%.
A production technique for synchromesh gear, its procedure of processing comprises:
Steps A, dropped into successively in smelting furnace by the raw material of above-mentioned weight percent, make each raw material high-temperature fusion, melt temperature is 480 DEG C;
Step B, stir the raw material in above-mentioned melting process, the fusion time is 3.5h, stirs once, stir 1.5min at every turn every 40min;
Step C, utilize self-feeding transfer roller by the delivery of molten metal that stirs in holding furnace, molten metal is injected into die cast in pressure die-casting machine by holding furnace automatically, cooling, and cooling time is 6 seconds, obtains the thick finished product of synchromesh gear;
Step D, precision work: fin cutting, burr are carried out to the thick finished product of synchromesh gear with deburring, burr machine, and with cylinder boring machine, Boring is carried out to gear, obtain synchromesh gear finished product.
Wherein, described steps A is 4h to the process period of described step D.
The above embodiment, just better embodiment of the present invention, be not limit the scope of the present invention, therefore all equivalences done according to structure, feature and the principle described in the present patent application the scope of the claims change or modify, and all should comprise in patent claim of the present invention.
Claims (2)
1. a zinc alloy material for synchromesh gear, is characterized in that, comprises the element of following weight percent:
Zinc 88 ~ 93%
Aluminium 5 ~ 10%
Copper 1 ~ 2%
Magnesium 0.5 ~ 1%
Cadmium 0.1 ~ 0.5%
Iron 0.01 ~ 0.05%
Nickel 0.005 ~ 0.01%
Silicon 1 ~ 6%
Manganese 0.005 ~ 0.007%
Plumbous 0.003 ~ 0.005%
Titanium 0.005 ~ 0.007%;
The chemical composition of described element meets following formula:
94.5%≤Zn+Cu+Al≤99.5%……（1）
0.16%≤10（Ni+Fe）≤Mg+Cd……（2）
6.5%≤Al+Cu+4Cd+20Fe≤13%……（3）
Wherein, Zn, Cu, Al, Ni, Fe, Mg and Cd represent the weight percent of each element respectively.
2. a production technique for synchromesh gear, is characterized in that, utilize the zinc alloy material of the synchromesh gear described in claim 1 to process, its procedure of processing comprises:
Steps A, dropped into successively in smelting furnace by the raw material of above-mentioned weight percent, make each raw material high-temperature fusion, melt temperature is 400 ~ 500 DEG C;
Step B, stir the raw material in above-mentioned melting process, the fusion time is 3 ~ 6h, stirs once, stir 1 ~ 3min at every turn every 30 ~ 45min;
Step C, utilize self-feeding transfer roller by the delivery of molten metal that stirs in holding furnace, molten metal is injected into die cast in pressure die-casting machine by holding furnace automatically, and cooling, obtains the thick finished product of synchromesh gear;
Step D, precision work: fin cutting, burr are carried out to the thick finished product of synchromesh gear with deburring, burr machine, and with cylinder boring machine, Boring is carried out to gear, obtain synchromesh gear finished product;
In described step C, cooling time is 1 ~ 10 second;
Described steps A is 3.5 ~ 7h to the process period of described step D.
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| CN105506380A (en) * | 2015-11-10 | 2016-04-20 | 太仓捷公精密金属材料有限公司 | Corrosion-resistant zinc-aluminium alloy |
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| CN109022919A (en) * | 2018-09-20 | 2018-12-18 | 贵州多彩创意旅游文化产业有限公司 | A kind of ornaments wear-resistant zinc alloy material and preparation method thereof |
| CN111673400B (en) * | 2020-06-18 | 2022-04-01 | 苏州伊泰克汽配科技有限公司 | Machining process of automobile seat adjuster gear |
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| US5034283A (en) * | 1990-02-23 | 1991-07-23 | Summit Composites International | Economic fabrication of composite zinc alloys |
| JPH057987A (en) * | 1991-06-28 | 1993-01-19 | Sekisui Chem Co Ltd | Production of metallic mold for molding plastic |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5034283A (en) * | 1990-02-23 | 1991-07-23 | Summit Composites International | Economic fabrication of composite zinc alloys |
| JPH057987A (en) * | 1991-06-28 | 1993-01-19 | Sekisui Chem Co Ltd | Production of metallic mold for molding plastic |
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