CN104789826A - Automobile air conditioner compressor planetary plate and production method thereof - Google Patents
Automobile air conditioner compressor planetary plate and production method thereof Download PDFInfo
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Abstract
The invention provides an automobile air conditioner compressor planetary plate. The planetary plate is prepared from an aluminum alloy which comprises the following components in percentage by weight: 8%-9% of Si, 1%-1.5% of Cu, 0.4%-0.7% of Mg, 0.1%-0.3% of C, 0.8%-1.5% of Ni, 0-0.1% of Mn, 0-0.2% of Fe, 0-0.1% of Zn, 0.3%-0.4% of Ti, 0.1%-0.2% of RE and the balance of Al. The invention also provides a production method of the automobile air conditioner compressor planetary plate. The elements in the aluminum alloy for the planetary plate are selected and controlled, a forging technique is further used instead of the casting technique, the pretreatment before forging and after-treatment after forging are optimized, and the technological parameters in each treatment process are optimized, thereby enhancing the strength of the planetary plate and further improving the service performance and service life of the planetary plate.
Description
Technical field
The present invention relates to automotive industry technical field, especially relate to a kind of automobile air conditioner compressor planetary plate and production method thereof.
Background technology
Along with improving constantly of national life level, increasing to the demand of automobile, also more and more higher to the requirement of automotive performance, cause domestic automobile industrial boom, auto-parts degree domestic improves constantly.
Automobile air conditioner compressor is the core component of automotive air-conditioning system, and Swash plate Type Compressor is the reciprocating one-way piston structure five or seven cylinders are evenly distributed in compressor casing.As the spindle turns, planetary plate waves as axial reciprocating, drives compressor piston to move reciprocatingly, thus completes the suction of refrigeration agent, compression and discharge process.
Planetary plate is the core component of automobile air conditioner compressor, is called as the heart of automobile air conditioner compressor, in view of the Working environment that it is severe, has very high requirement to mechanical properties such as its intensity.At present, existing aluminium alloy planetary plate generally adopts the aluminum alloy materials of the component containing following weight percents to prepare, Si:6.5% ~ 7.5%, Cu:0 ~ 0.2%, Mg:0.4% ~ 0.7%, Mn:0 ~ 0.1%, Fe:0 ~ 0.2%, Zn:0 ~ 0.1%, Ti:0.2%, surplus is Al, but planetary plate intensity prepared by this aluminum alloy materials is lower, cause the use properties of planetary plate and the life-span lower, cannot meet the requirement that automotive industry develops rapidly.
Traditional compressor planetary plate adopts the processing of aluminium alloy casting process.Water casting production process mainly to have the following disadvantages: the more difficult control of process, foundry goods easily produces mass defect, causes planetary plate intensity lower, thus cause the use properties of planetary plate and the life-span lower.
Therefore, how to improve the intensity of planetary plate, and then improve the use properties of planetary plate and the life-span is the technical problem that current those skilled in the art need solution badly.
Summary of the invention
The object of this invention is to provide a kind of automobile air conditioner compressor planetary plate, this planetary plate has higher intensity, can improve use properties and the life-span of planetary plate.Another object of the present invention is to provide a kind of production method of above-mentioned automobile air conditioner compressor planetary plate.
For solving above-mentioned technical problem, technical scheme provided by the invention is:
A kind of automobile air conditioner compressor planetary plate, described planetary plate is made up of the aluminium alloy of the component comprising following weight percent: Si:8% ~ 9%, Cu:1% ~ 1.5%, Mg:0.4% ~ 0.7%, C:0.1% ~ 0.3%, Ni:0.8% ~ 1.5%, Mn:0 ~ 0.1%, Fe:0 ~ 0.2%, Zn:0 ~ 0.1%, Ti:0.3% ~ 0.4%, RE:0.1% ~ 0.2%, surplus is Al.
Preferably, the weight percent of described Si is 8.2% ~ 8.8%.
Preferably, the weight percent of described Cu is 1.1% ~ 1.4%.
Preferably, the weight percent of described Ni is 1.0% ~ 1.3%.
Preferably, the weight percent of described Ti is 0.32% ~ 0.38%.
Preferably, the weight percent of described C is 0.15% ~ 0.25%.
Preferably, the weight percent of described RE is 0.12% ~ 0.18%.
Advantageous Effects of the present invention:
The present invention with the addition of Si element in hollow piston aluminum alloy materials, and Si element can improve tensile strength and the hardness of aluminium alloy, can also form Mg-Si metallic compound, improve the thermal characteristics of aluminium alloy with Mg; The present invention with the addition of Cu element in hollow piston aluminum alloy materials, and Cu element forms θ phase with Al element, and θ phase plays solution strengthening and dispersion-strengthened action, improves tensile strength and the yield strength of aluminium alloy; The present invention with the addition of Ni element in hollow piston aluminum alloy materials, and Ni element can form AlNi in the melt
2, Al
3the High-Temperature Strengthening phases such as Ni, are distributed in matrix crystal boundary in disperse phase, put forward heavy alloyed room temperature strength and hot strength and volume, dimensional stability; The present invention also with the addition of Ti element in hollow piston aluminium alloy, Ti element forms aluminium base complex compound with multiple elements such as Mg, Cu, RE in alloy melt, effective crystallization of refinement, improve crystalline structure structure, and composite alloy compound is separated out on aluminium base crystal boundary, the creep-resistant property improving aluminium alloy improves the castability of alloy; The present invention with the addition of C element in hollow piston aluminum alloy materials, C element can improve intensity, hardness, elongation, the comprehensive mechanical property such as fracture toughness and wear resisting property of aluminium alloy, reduce the thermal expansivity of alloy, increase the heat conductivility of alloy, improve wear resistance and high-temperature stability significantly; The present invention with the addition of rare earth element in hollow piston aluminum alloy materials, rare earth elements RE is surface active element, can integrated distribution on crystal boundary face, reduce pulling force between phase and phase, thus the merit of formation critical size nucleus is made to reduce, nuclei of crystallization quantity increases, thus make grain refining, improve intensity and the hardness of aluminium alloy, rare earth elements RE can also improve elongation, other mechanical property such as fracture toughness and wear resisting property of aluminium alloy, reduce the thermal expansivity of alloy, increase the heat conductivility of alloy, improve wear resistance and high-temperature stability significantly.In sum, the present invention, by the selection of element in planetary plate aluminium alloy and control, improves the intensity of planetary plate, thus improves use properties and the work-ing life of planetary plate.
Ni also has good oxidation-resistance, wear resistance, thermotolerance, thermostability, can reduce the change of the alloy coefficient of expansion; Mn can improve thermotolerance; Ti can not only thinning microstructure, improves piston face quality, can improve again the mobility of aluminium alloy when thermotolerance and forging and stamping, thus improve piston face quality, improve material at high temperature mechanical property; C element and rare earth elements RE are under function composite by electromagnetic stirring, can be formed in aluminium alloy a kind of between metal and nonmetal between composite self-lubricating material, due to the existence of self-lubricating substances, greatly reduce cylinder specific pressure, and make to obtain sufficient lubrication between the even surface of friction of friction, the composition of self-lubricating substances is conducive to the generation avoiding adhesive wear, thus ensures the resistance to air loss of compressor of air conditioner, improves the use properties of compressor.
The present invention also provides the production method of automobile air conditioner compressor planetary plate described in a kind of above-mentioned any one, comprises the following steps:
1) Al source, Si source, Cu source, Mg source, C source, Ni source, Mn source, Fe source, Zn source, Ti source, RE source are fused into liquation, described liquation are utilized at temperature is 680 DEG C ~ 700 DEG C and carries out refining without chlorine refining agent;
2) by described step 1) liquation after refining is at 760 DEG C ~ 850 DEG C, and the Al-8Sr master alloy adding liquation gross weight described in 0.6% ~ 0.8% carries out Metamorphism treatment;
3) by described step 2) liquation after Metamorphism treatment utilizes and carries out refining without chlorine refining agent at 720 DEG C ~ 760 DEG C, utilizes semicontinuous caster to obtain charge bar the liquation after refining;
4) by described step 3) obtained charge bar is heated to 350 DEG C ~ 450 DEG C and carries out hot extrusion deformation process;
5) by described step 4) charge bar after hot extrusion deformation process is heated to 400 DEG C ~ 420 DEG C and forges, then heat-treat;
6) by described step 5) charge bar after thermal treatment is heated to 435 DEG C ~ 465 DEG C, the then obtained planetary plate blank of forging;
7) by described step 6) obtained planetary plate blank is heat-treated successively, Shot Blasting and machining obtain planetary plate.
Preferably, described step 5) in thermal treatment concrete operations be solution treatment 5h ~ 6h at 500 DEG C ~ 510 DEG C, water-cooled 2min ~ 5min at 40 DEG C ~ 60 DEG C; Ageing treatment 5h ~ 6h at 200 DEG C ~ 210 DEG C, air cooling.
Preferably, described step 7) thermal treatment concrete operations are be incubated 3h ~ 4h at 495 DEG C ~ 505 DEG C, adopt water temperature not higher than the cold-water quench 2min ~ 4min of 60 DEG C; Then ageing treatment 5h ~ 6h at 220 DEG C ~ 230 DEG C, air cooling.
The Advantageous Effects of aforementioned production method:
Compared with prior art, production method provided by the invention adopts above-mentioned preferred aluminum alloy materials as the starting material producing planetary plate, further employing forging process produces planetary plate, overcome the problems of Foundry Production planetary plate, before forging, adopt the hot extrusion deformation process of nitrogen refining, Metamorphism treatment, nitrogen refining, D.C.casting casting, gross distortion degree simultaneously successively, optimize the pre-treatment before forging; Adopt thermal treatment and Shot Blasting successively after forging, optimize the aftertreatment after forging.The present invention is on the basis of intensity optimizing starting material aluminium alloy, casting technique is replaced by adopting forging process, and the pre-treatment optimized before forging and the aftertreatment after forging, optimize the processing parameter in every treating processes simultaneously, improve the intensity of planetary plate, thus improve use properties and the work-ing life of planetary plate.
Embodiment
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these descriptions just further illustrate feature of the present invention and advantage, instead of limiting to the claimed invention.
The invention provides a kind of automobile air conditioner compressor planetary plate, described planetary plate is made up of the aluminium alloy of the component comprising following weight percent: Si:8% ~ 9%, Cu:1% ~ 1.5%, Mg:0.4% ~ 0.7%, C:0.1% ~ 0.3%, Ni:0.8% ~ 1.5%, Mn:0 ~ 0.1%, Fe:0 ~ 0.2%, Zn:0 ~ 0.1%, Ti:0.3% ~ 0.4%, RE:0.1% ~ 0.2%, surplus is Al.
The present invention with the addition of Si element in hollow piston aluminum alloy materials, and Si element can improve tensile strength and the hardness of aluminium alloy, can also form Mg-Si metallic compound, improve the thermal characteristics of aluminium alloy with Mg.The weight percent of described Si element is 8% ~ 9%, is preferably 8.2% ~ 8.8%, is more preferably 8.4% ~ 8.7%.
The present invention with the addition of Cu element in planetary plate aluminum alloy materials, and Cu element forms θ phase with Al element, and θ phase plays solution strengthening and dispersion-strengthened action, improves tensile strength and the yield strength of aluminium alloy.The weight percent of described Cu is 1% ~ 1.5%, is preferably 1.1% ~ 1.4%, is more preferably 1.2% ~ 1.3%.
The present invention with the addition of Mg element in planetary plate aluminum alloy materials, and Mg element can make lattice produce distortion, causes solution strengthening, thus improves intensity and the hardness of aluminium alloy, and Mg element can also improve erosion resistance and the resistance toheat of aluminium alloy simultaneously.The weight percent of described Mg is 0.4% ~ 0.7%, is preferably 0.45% ~ 0.65%, is more preferably 0.50% ~ 0.60%.
The present invention with the addition of Ni element in planetary plate aluminum alloy materials, and Ni element can form AlNi in the melt
2, Al
3the High-Temperature Strengthening phases such as Ni, are distributed in matrix crystal boundary in disperse phase, put forward heavy alloyed room temperature strength and hot strength and volume, dimensional stability.The weight percent of described Ni is 0.8% ~ 1.5%, is preferably 1.0% ~ 1.3%, is more preferably 1.05 ~ 1.25%.
The present invention with the addition of Mn element in planetary plate aluminum alloy materials, and Mn, as High-Temperature Strengthening phase, has raising recrystallization temperature, suppresses the effect of recrystallize alligatoring, can realize the solution strengthening of alloy, supplements strengthening and improve resistance toheat; Mn element can obtain MnAl4 with matrix element Al effect, its with fine aluminium current potential identical, effectively can improve erosion resistance and the weldability of alloy.The weight percent of described Mn element is 0 ~ 0.1%, is preferably 0.01% ~ 0.08%, is more preferably 0.03% ~ 0.06%.
The present invention with the addition of Fe element in planetary plate aluminum alloy materials, and Fe is a kind of feature microalloy element, can form Al with Al
3fe, the Al of precipitation
3fe diffusing particle inhibits the high temperature creep of alloy to be out of shape, and improves the high-temperature stability of aluminium alloy; Fe can also improve the yield strength of aluminium alloy, resistance toheat and plasticity.In the preparation process of aluminium alloy, part Fe is with Al
3the form of Fe is separated out, part Fe and RE forms AlFeRE compound and separates out, and after the high temperature anneal, the solid solution of Fe in aluminium base is less, being on good terms of these disperse educts strengthens the anti-fatigue performance of alloy and the resistance toheat of hot operation, and rare earth elements RE precipitated phase can also improve yield strength intensity.The weight percent of described Fe element is 0 ~ 0.2%, is preferably 0.05% ~ 0.15%, is more preferably 0.08% ~ 0.12%.
The present invention also with the addition of Zn element in planetary plate aluminium alloy, and Zn element forms REAl with Al in the melt
2zn
3deng various metals compound, the tensile property of aluminium alloy can be improved, and effectively can improve the high-temperature corrosion-resistance performance of aluminium alloy, the wear resisting property of aluminium alloy can also be improved.The weight percent of described Zn is 0 ~ 0.1%, is preferably 0.02% ~ 0.08%, is more preferably 0.04% ~ 0.07%.
The present invention also with the addition of Ti element in planetary plate aluminium alloy, Ti element forms aluminium base complex compound with multiple elements such as Mg, Cu, RE in alloy melt, effective crystallization of refinement, improve crystalline structure structure, and composite alloy compound is separated out on aluminium base crystal boundary, the creep-resistant property improving aluminium alloy improves the castability of alloy.The weight percent of described Ti is 0.3% ~ 0.4%, is preferably 0.32% ~ 0.38%, is more preferably 0.34% ~ 0.37%.
The present invention with the addition of C element in planetary plate aluminum alloy materials, C element can improve intensity, hardness, elongation, the comprehensive mechanical property such as fracture toughness and wear resisting property of aluminium alloy, reduce the thermal expansivity of alloy, increase the heat conductivility of alloy, improve hot strength and the hot hardness of aluminium alloy significantly.The weight percent of described C is 0.1% ~ 0.3%, is preferably 0.15% ~ 0.25%, is more preferably 0.17% ~ 0.23%.
The present invention with the addition of rare earth elements RE in planetary plate aluminum alloy materials, and described rare earth elements RE is one or more in lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), yttrium (Y) and scandium (Sc).Rare earth elements RE is larger than aluminium with the avidity of the elements such as hydrogen, oxygen, nitrogen, easy formation multiple compounds, thus rare earth element be degasification in alloy, denitrogenation, slag making, neutralization trace low-melting impurities and change the clearing machine of impurity state, good refining effect can be played, what alloy was become is purer, thus makes aluminium alloy have good mechanical property; Rare earth elements RE is surface active element, can integrated distribution on crystal boundary face, reduce pulling force between phase and phase, thus make the merit of formation critical size nucleus reduce, nuclei of crystallization quantity increases, thus makes grain refining, the intensity of raising aluminium alloy and hardness.Rare earth elements RE can also improve other mechanical properties such as the elongation of aluminium alloy, fracture toughness and wear resisting property, reduces the thermal expansivity of alloy, increases the heat conductivility of alloy, improves hot strength and the hot hardness of aluminium alloy significantly.The weight percent of described RE is 0.1% ~ 0.2%, is preferably 0.12% ~ 0.18%, is more preferably 0.14% ~ 0.17%.
In planetary plate of the present invention aluminium alloy used except above-mentioned alloying element, surplus is Al.
Aluminium alloy comprises following alloying element: Si, Cu, Mg, Ni, Mn, Fe, Zn, Ti, C, RE, and in fact, multiple alloying element is not isolated working, and its impact is mutual, and wherein the performance of how many equal alloys of any one component brings change.Often kind of element has and independently acts on separately, but after this element combines mutually, mutually excite between element, mutually promote, synergy clearly, the performance of aluminium alloy is greatly optimized, and especially the aspect such as mechanical property, processability, homogeneity of structure, segregation all has and significantly promotes.
Present invention also offers the production method of automobile air conditioner compressor planetary plate described in a kind of above-mentioned any one, comprise the following steps:
1) Al source, Si source, Cu source, Mg source, C source, Ni source, Mn source, Fe source, Zn source, Ti source, RE source are fused into liquation, described liquation are utilized at temperature is 680 DEG C ~ 700 DEG C and carries out refining without chlorine refining agent;
2) by described step 1) liquation after refining is at 760 DEG C ~ 850 DEG C, and the Al-8Sr master alloy adding liquation gross weight described in 0.6% ~ 0.8% carries out Metamorphism treatment;
3) by described step 2) liquation after Metamorphism treatment utilizes and carries out refining without chlorine refining agent at 720 DEG C ~ 760 DEG C, utilizes semicontinuous caster to obtain charge bar the liquation after refining;
4) by described step 3) obtained charge bar is heated to 350 DEG C ~ 450 DEG C and carries out hot extrusion deformation process;
5) by described step 4) charge bar after hot extrusion deformation process is heated to 400 DEG C ~ 420 DEG C and forges, then heat-treat;
6) by described step 5) charge bar after thermal treatment is heated to 435 DEG C ~ 465 DEG C, the then obtained planetary plate blank of forging;
7) by described step 6) obtained planetary plate blank is heat-treated successively, Shot Blasting and machining obtain planetary plate.
In raw material fusion process, the present invention preferably adopts Al-Cu master alloy to be that described melting is carried out in Cu source, and in described Al-Cu master alloy, the weight percent of Cu is preferably 8 ~ 12%, is more preferably 10%.
The present invention preferably adopts Al-Ni master alloy to be that described melting is carried out in Ni source, and in described Al-Ni master alloy, the weight percent of Ni is preferably 8 ~ 12%, is more preferably 10%.
The present invention preferably adopts Al-Mn master alloy to be that described melting is carried out in Mn source, and in described Al-Mn master alloy, the weight percent of Mn is preferably 8 ~ 12%, is more preferably 10%.
The present invention preferably adopts Al-RE master alloy to be that described melting is carried out in RE source, and in described Al-RE master alloy, the weight percent of RE is preferably 8 ~ 12%, is more preferably 10%.
The present invention preferably adopts Al-Si master alloy to be that described melting is carried out in Si source, and in described Al-Si master alloy, the weight percent of Si is preferably 8 ~ 12%, is more preferably 10%.
The present invention preferably adopts Al-Mg master alloy to be that described melting is carried out in Mg source, and in described Al-Mg master alloy, the weight percent of Mg is preferably 8 ~ 12%, is more preferably 10%.
The present invention preferably adopts Al-C master alloy to be that described melting is carried out in C source, and in described Al-C master alloy, the weight percent of C is preferably 8 ~ 12%, is more preferably 10%.
The present invention preferably adopts Al-Zn master alloy to be that described melting is carried out in Zn source, and in described Al-Zn master alloy, the weight percent of Zn is preferably 8 ~ 12%, is more preferably 10%.
The present invention preferably adopts Al-Ti master alloy to be that described melting is carried out in Ti source, and in described Al-Ti master alloy, the weight percent of Ti is preferably 8 ~ 12%, is more preferably 10%.
The present invention preferably adopts Al-Fe master alloy to be that described melting is carried out in Fe source, and in described Al-Fe master alloy, the weight percent of Fe is preferably 8 ~ 12%, is more preferably 10%.
The present invention preferably adopts pure Al ingot to be that described melting is carried out in Al source, and in described pure Al ingot, the weight percent of Al preferably >=99.7%.
The fine aluminium ingot of certain mass is added in crucible, be heated to 780 DEG C ± 10 DEG C, fine aluminium ingot is smelted into liquation, then in described liquation, Al-Fe master alloy is added successively according to proportioning, Al-Cu master alloy, Al-Ni master alloy, Al-Mn master alloy, Al-RE master alloy, Al-Si master alloy, Al-Zn master alloy, Al-Ti master alloy, be warming up to 840 DEG C ± 10 DEG C, be incubated 6 hours, stir after solid alloy all melts, open electromagnetic mixer, stir 1 hour, then 760 DEG C ± 10 DEG C are cooled to, Al-C master alloy is added again according to proportioning, Al-Mg master alloy, again open electromagnetic mixer, stir 1 hour, obtain liquation.
Above-mentioned liquation is utilized and carries out refining without chlorine refining agent.Nitrogen is preferably without chlorine refining agent.Logical nitrogen refining, keeps melt temperature to be 680 DEG C ~ 700 DEG C, is preferably 685 DEG C ~ 695 DEG C, after logical nitrogen 10min ~ 15min, skims.
Liquation after above-mentioned refining is added Al-8Sr master alloy and carries out Metamorphism treatment.In Metamorphism treatment process, melt temperature is 760 DEG C ~ 850 DEG C, is preferably 780 DEG C ~ 820 DEG C; The add-on of Al-8Sr master alloy accounts for 0.6% ~ 0.8% of liquation gross weight, is preferably 0.65% ~ 0.75%; After stirring, insulation leaves standstill 28min ~ 32min.
Liquation after above-mentioned Metamorphism treatment is utilized and carries out refining without chlorine refining agent.Nitrogen is preferably without chlorine refining agent.Logical nitrogen refining, keeps melt temperature to be 720 DEG C ~ 760 DEG C, is preferably 730 DEG C ~ 750 DEG C, after logical nitrogen 10min ~ 15min, skims.
Utilize semicontinuous caster to obtain charge bar the liquation after above-mentioned nitrogen refining, the present invention is not particularly limited semicontinuous casting technique, adopts processing step well known to those skilled in the art and processing parameter etc.
The charge bar that above-mentioned steps is obtained is heated to 350 DEG C ~ 450 DEG C and carries out hot extrusion deformation process.The present invention is not particularly limited hot extrusion deformation treatment process, adopts processing step well known to those skilled in the art and processing parameter etc.
Charge bar after above-mentioned hot extrusion deformation process is heated to 400 DEG C ~ 420 DEG C forge, then heat-treats.Heat treated concrete operations are: thermal treatment concrete operations are solution treatment 5h ~ 6h at 500 DEG C ~ 510 DEG C, water-cooled 2min ~ 5min at 40 DEG C ~ 60 DEG C; Ageing treatment 5h ~ 6h at 200 DEG C ~ 210 DEG C, air cooling.
Charge bar after above-mentioned thermal treatment is heated to 435 DEG C ~ 465 DEG C, then the obtained planetary plate blank of forging.Concrete operations are 1. blanking: according to forging planetary plate blank volume and charge bar diameter used, calculate charge bar length, use blanking machine blanking; 2. pair planetary plate forging mold carries out quench treatment and polished finish, and make die hardness be 48HRC ~ 55HRC, roughness is 0.2Ra ~ 0.4Ra, is then installed by mould, carries out spraying releasing agent to upper die and lower die; 3. heat: use box holding furnace, charge bar is heated to 435 DEG C ~ 465 DEG C, be incubated 2 hours; 4. matched moulds is shaping; After the aluminium alloy charge bar touching in counterdie when mold is descending, the pressure of 4000KN is instantaneous to pressurize to aluminium alloy charge bar, and when after the contact of upper die and lower die plane of orientation, patrix is up, under the effect of push rod, realize the demoulding, forms planetary plate blank.
The planetary plate blank that above-mentioned forging is obtained is heat-treated.Thermal treatment concrete operations are be incubated 3h ~ 4h at 495 DEG C ~ 505 DEG C, adopt water temperature not higher than the cold-water quench 2min ~ 4min of 60 DEG C; Then ageing treatment 5h ~ 6h at 220 DEG C ~ 230 DEG C, air cooling.
Planetary plate blank spades after above-mentioned thermal treatment is put into shot-blasting machine, 200 ~ 300, every stove, every stove ball blast time is 20min.
Finally, planetary plate is obtained to above-mentioned steps and carries out smart machining, obtained planetary plate finished product.
The invention provides a kind of automobile air conditioner compressor planetary plate, described planetary plate is made up of the aluminium alloy of the component comprising following weight percent: Si:8% ~ 9%, Cu:1% ~ 1.5%, Mg:0.4% ~ 0.7%, C:0.1% ~ 0.3%, Ni:0.8% ~ 1.5%, Mn:0 ~ 0.1%, Fe:0 ~ 0.2%, Zn:0 ~ 0.1%, Ti:0.3% ~ 0.4%, RE:0.1% ~ 0.2%, surplus is Al.The present invention, by the selection of element in planetary plate aluminium alloy and control, improves the intensity of planetary plate, thus improves use properties and the work-ing life of planetary plate.Present invention also offers a kind of production method of automobile air conditioner compressor planetary plate.The method is on the basis optimizing starting material intensity of aluminum alloy, casting technique is replaced by adopting forging process, and the pre-treatment optimized before forging and the aftertreatment after forging, optimize the processing parameter in every treating processes simultaneously, improve the intensity of planetary plate, thus improve use properties and the work-ing life of planetary plate.
The present invention detects component and the content of the aluminium alloy that the present invention obtains according to " GB/T 20975.25-2008 Al and Alalloy chemical analysis method the 25th part: inductively coupled plasma atomic emissions "; The present invention detects the mechanical property of the planetary plate that the present invention obtains according to " GB/T 228.1-2010 metal material stretching test part 1 room temperature test method ".
In order to understand the present invention further, be described in detail to automobile air conditioner compressor planetary plate provided by the invention and production method thereof below in conjunction with embodiment, protection scope of the present invention is not limited by the following examples.
Embodiment 1
The fine aluminium ingot of certain mass is added in crucible, be heated to 780 DEG C, fine aluminium ingot is smelted into liquation, then in described liquation, Al-Fe master alloy is added successively according to proportioning, Al-Cu master alloy, Al-Ni master alloy, Al-Mn master alloy, Al-RE master alloy, Al-Si master alloy, Al-Zn master alloy, Al-Ti master alloy, be warming up to 840 DEG C, be incubated 6 hours, stir after solid alloy all melts, open electromagnetic mixer, stir 1 hour, then 760 DEG C are cooled to, Al-C master alloy is added again according to proportioning, Al-Mg master alloy, again open electromagnetic mixer, stir 1 hour, obtain liquation.
Above-mentioned liquation is utilized nitrogen refining, keeps melt temperature to be 680 DEG C, after logical nitrogen 10min, skim.
Liquation after above-mentioned refining is added Al-8Sr master alloy and carries out Metamorphism treatment.In Metamorphism treatment process, melt temperature is 760 DEG C; The add-on of Al-8Sr master alloy accounts for 0.6% of liquation gross weight; After stirring, insulation leaves standstill 28min.
Liquation after Metamorphism treatment is led to nitrogen refining, keeps melt temperature to be 720 DEG C, after logical nitrogen 10min, skim.
Semicontinuous caster is utilized to obtain charge bar the liquation after above-mentioned nitrogen refining.Described charge bar comprises the component of following weight percent: Si:8%, Cu:1%, Mg:0.4%, C:0.1%, Ni:0.8%, Mn:0.01%, Fe:0.05%, Zn:0.02%, Ti:0.3%, RE:0.1%, and surplus is Al.
The charge bar that above-mentioned steps is obtained is heated to 350 DEG C and carries out hot extrusion deformation process.
Charge bar after above-mentioned hot extrusion deformation process is heated to 400 DEG C forge, then heat-treats.Heat treated concrete operations are: solution treatment 5h at charge bar temperature is 500 DEG C, and employing water temperature is the water cooling 2min of 40 DEG C; Ageing treatment 5h at 200 DEG C, air cooling.
Charge bar after above-mentioned thermal treatment is heated to 435 DEG C, then the obtained planetary plate blank of forging.Then heat-treat planetary plate blank, thermal treatment concrete operations are be incubated 3h at 495 DEG C, adopt water temperature not higher than the cold-water quench 2min of 60 DEG C; Then ageing treatment 5h at 220 DEG C, air cooling.
Finally, planetary plate is obtained to above-mentioned steps and carry out Shot Blasting and smart machining obtains planetary plate.
According to above-mentioned standard method, planetary plate is obtained to the present embodiment and carry out mechanics properties testing, the results are shown in Table 1.
Embodiment 2
The fine aluminium ingot of certain mass is added in crucible, be heated to 785 DEG C, fine aluminium ingot is smelted into liquation, then in described liquation, Al-Fe master alloy is added successively according to proportioning, Al-Cu master alloy, Al-Ni master alloy, Al-Mn master alloy, Al-RE master alloy, Al-Si master alloy, Al-Zn master alloy, Al-Ti master alloy, be warming up to 845 DEG C, be incubated 6 hours, stir after solid alloy all melts, open electromagnetic mixer, stir 1 hour, then 765 DEG C are cooled to, Al-C master alloy is added again according to proportioning, Al-Mg master alloy, again open electromagnetic mixer, stir 1 hour, obtain liquation.
Above-mentioned liquation is utilized nitrogen refining, keeps melt temperature to be 690 DEG C, after logical nitrogen 13min, skim.
Liquation after above-mentioned refining is added Al-8Sr master alloy and carries out Metamorphism treatment.In Metamorphism treatment process, melt temperature is 805 DEG C; The add-on of Al-8Sr master alloy accounts for 0.7% of liquation gross weight; After stirring, insulation leaves standstill 30min.
Liquation after Metamorphism treatment is led to nitrogen refining, keeps melt temperature to be 740 DEG C, after logical nitrogen 13min, skim.
Semicontinuous caster is utilized to obtain charge bar the liquation after above-mentioned nitrogen refining.Described charge bar comprises the component of following weight percent: Si:8.5%, Cu:1.25%, Mg:0.55%, C:0.2%, Ni:1.1%, Mn:0.05%, Fe:0.1%, Zn:0.05%, Ti:0.35%, RE:0.15%, and surplus is Al.
The charge bar that above-mentioned steps is obtained is heated to 400 DEG C and carries out hot extrusion deformation process.
Charge bar after above-mentioned hot extrusion deformation process is heated to 410 DEG C forge, then heat-treats.Heat treated concrete operations are: solution treatment 5.5h at charge bar temperature is 505 DEG C, and employing water temperature is the water cooling 4min of 50 DEG C; Ageing treatment 5.5h at 205 DEG C, air cooling.
Charge bar after above-mentioned thermal treatment is heated to 450 DEG C, then the obtained planetary plate blank of forging.Then heat-treat planetary plate blank, thermal treatment concrete operations are be incubated 3.5h at 500 DEG C, adopt water temperature not higher than the cold-water quench 3min of 60 DEG C; Then ageing treatment 5.5h at 225 DEG C, air cooling.
Finally, planetary plate is obtained to above-mentioned steps and carry out Shot Blasting and smart machining obtains planetary plate.
According to above-mentioned standard method, planetary plate is obtained to the present embodiment and carry out mechanics properties testing, the results are shown in Table 1.
Embodiment 3
The fine aluminium ingot of certain mass is added in crucible, be heated to 790 DEG C, fine aluminium ingot is smelted into liquation, then in described liquation, Al-Fe master alloy is added successively according to proportioning, Al-Cu master alloy, Al-Ni master alloy, Al-Mn master alloy, Al-RE master alloy, Al-Si master alloy, Al-Zn master alloy, Al-Ti master alloy, be warming up to 850 DEG C, be incubated 6 hours, stir after solid alloy all melts, open electromagnetic mixer, stir 1 hour, then 770 DEG C are cooled to, Al-C master alloy is added again according to proportioning, Al-Mg master alloy, again open electromagnetic mixer, stir 1 hour, obtain liquation.
Above-mentioned liquation is utilized nitrogen refining, keeps melt temperature to be 700 DEG C, after logical nitrogen 15min, skim.
Liquation after above-mentioned refining is added Al-8Sr master alloy and carries out Metamorphism treatment.In Metamorphism treatment process, melt temperature is 850 DEG C; The add-on of Al-8Sr master alloy accounts for 0.8% of liquation gross weight; After stirring, insulation leaves standstill 32min.
Liquation after Metamorphism treatment is led to nitrogen refining, keeps melt temperature to be 760 DEG C, after logical nitrogen 15min, skim.
Semicontinuous caster is utilized to obtain charge bar the liquation after above-mentioned nitrogen refining.Described charge bar comprises the component of following weight percent: Si:9%, Cu:1.5%, Mg:0.7%, C:0.3%, Ni:1.5%, Mn:0.1%, Fe:0.2%, Zn:0.1%, Ti:0.4%, RE:0.2%, and surplus is Al.
The charge bar that above-mentioned steps is obtained is heated to 450 DEG C and carries out hot extrusion deformation process.
Charge bar after above-mentioned hot extrusion deformation process is heated to 420 DEG C forge, then heat-treats.Heat treated concrete operations are: solution treatment 6h at charge bar temperature is 510 DEG C, and employing water temperature is the water cooling 5min of 60 DEG C; Ageing treatment 6h at 210 DEG C, air cooling.
Charge bar after above-mentioned thermal treatment is heated to 465 DEG C, then the obtained planetary plate blank of forging.Then heat-treat planetary plate blank, thermal treatment concrete operations are be incubated 4h at 505 DEG C, adopt water temperature not higher than the cold-water quench 4min of 60 DEG C; Then ageing treatment 6h at 230 DEG C, air cooling.
Finally, planetary plate is obtained to above-mentioned steps and carry out Shot Blasting and smart machining obtains planetary plate.
According to above-mentioned standard method, planetary plate is obtained to the present embodiment and carry out mechanics properties testing, the results are shown in Table 1.
The data of mechanical table of planetary plate prepared by table 1 embodiment
| Embodiment | Tensile strength (Rm/MPa) | Yield strength (Rp0.2/Mpa) | Unit elongation (A%) |
| Embodiment 1 | 360 | 290 | 9.2 |
| Embodiment 2 | 382 | 313 | 9.8 |
| Embodiment 3 | 376 | 305 | 9.5 |
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.Multiple amendment for these embodiments is that apparent, defined herein General Principle can without departing from the spirit or scope of the present invention, realize in other embodiments for those skilled in the art.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the most wide region consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an automobile air conditioner compressor planetary plate, is characterized in that, described planetary plate is made up of the aluminium alloy of the component comprising following weight percent: Si:8% ~ 9%, Cu:1% ~ 1.5%, Mg:0.4% ~ 0.7%, C:0.1% ~ 0.3%, Ni:0.8% ~ 1.5%, Mn:0 ~ 0.1%, Fe:0 ~ 0.2%, Zn:0 ~ 0.1%, Ti:0.3% ~ 0.4%, RE:0.1% ~ 0.2%, surplus is Al.
2. planetary plate according to claim 1, is characterized in that, the weight percent of described Si is 8.2% ~ 8.8%.
3. planetary plate according to claim 1, is characterized in that, the weight percent of described Cu is 1.1% ~ 1.4%.
4. planetary plate according to claim 1, is characterized in that, the weight percent of described Ni is 1.0% ~ 1.3%.
5. planetary plate according to claim 1, is characterized in that, the weight percent of described Ti is 0.32% ~ 0.38%.
6. planetary plate according to claim 1, is characterized in that, the weight percent of described C is 0.15% ~ 0.25%.
7. planetary plate according to claim 1, is characterized in that, the weight percent of described RE is 0.12% ~ 0.18%.
8. the production method of automobile air conditioner compressor planetary plate described in claim 1 ~ 7 any one, is characterized in that, comprise the following steps:
1) Al source, Si source, Cu source, Mg source, C source, Ni source, Mn source, Fe source, Zn source, Ti source, RE source are fused into liquation, described liquation are utilized at temperature is 680 DEG C ~ 700 DEG C and carries out refining without chlorine refining agent;
2) by described step 1) liquation after refining is at 760 DEG C ~ 850 DEG C, and the Al-8Sr master alloy adding liquation gross weight described in 0.6% ~ 0.8% carries out Metamorphism treatment;
3) by described step 2) liquation after Metamorphism treatment utilizes and carries out refining without chlorine refining agent at 720 DEG C ~ 760 DEG C, utilizes semicontinuous caster to obtain charge bar the liquation after refining;
4) by described step 3) obtained charge bar is heated to 350 DEG C ~ 450 DEG C and carries out hot extrusion deformation process;
5) by described step 4) charge bar after hot extrusion deformation process is heated to 400 DEG C ~ 420 DEG C and forges, then heat-treat;
6) by described step 5) charge bar after thermal treatment is heated to 435 DEG C ~ 465 DEG C, the then obtained planetary plate blank of forging;
7) by described step 6) obtained planetary plate blank is heat-treated successively, Shot Blasting and machining obtain planetary plate.
9. production method according to claim 8, is characterized in that, described step 5) in thermal treatment concrete operations be solution treatment 5h ~ 6h at 500 DEG C ~ 510 DEG C, water-cooled 2min ~ 5min at 40 DEG C ~ 60 DEG C; Ageing treatment 5h ~ 6h at 200 DEG C ~ 210 DEG C, air cooling.
10. production method according to claim 8, is characterized in that, described step 7) thermal treatment concrete operations are be incubated 3h ~ 4h at 495 DEG C ~ 505 DEG C, adopt water temperature not higher than the cold-water quench 2min ~ 4min of 60 DEG C; Then ageing treatment 5h ~ 6h at 220 DEG C ~ 230 DEG C, air cooling.
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| CN106119623A (en) * | 2016-07-01 | 2016-11-16 | 宁波东浩铸业有限公司 | A kind of end cover of engine |
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| CN111850358A (en) * | 2020-07-31 | 2020-10-30 | 滁州市汊河之星高新技术研发有限公司 | Automobile air conditioner compressor planetary disc and production method thereof |
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