CN106734895A - Casting technique for casting motorcycle wearing piece - Google Patents

Casting technique for casting motorcycle wearing piece Download PDF

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Publication number
CN106734895A
CN106734895A CN201611189911.9A CN201611189911A CN106734895A CN 106734895 A CN106734895 A CN 106734895A CN 201611189911 A CN201611189911 A CN 201611189911A CN 106734895 A CN106734895 A CN 106734895A
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CN
China
Prior art keywords
casting
wearing piece
dispensing
iron melt
motorcycle
Prior art date
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Withdrawn
Application number
CN201611189911.9A
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Chinese (zh)
Inventor
周伦
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Chongqing Hechuan Silver Nest Casting Factory
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Chongqing Hechuan Silver Nest Casting Factory
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Application filed by Chongqing Hechuan Silver Nest Casting Factory filed Critical Chongqing Hechuan Silver Nest Casting Factory
Priority to CN201611189911.9A priority Critical patent/CN106734895A/en
Publication of CN106734895A publication Critical patent/CN106734895A/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/02Sand moulds or like moulds for shaped castings
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00Refining of pig-iron; Cast iron
    • C21C1/10Making spheroidal graphite cast-iron
    • C21C1/105Nodularising additive agents
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26Methods of annealing
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D5/00Heat treatments of cast-iron
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C33/00Making ferrous alloys
    • C22C33/08Making cast-iron alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C37/00Cast-iron alloys
    • C22C37/04Cast-iron alloys containing spheroidal graphite
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The invention discloses the casting technique for casting motorcycle wearing piece, improve the wearability and toughness of motorcycle wearing piece, reduce the stomata on motorcycle wearing piece, extend the service life of motorcycle wearing piece, and it is simple to operate, with low cost, the few advantage of casting flue dust, especially using following set-up modes:Comprise the following steps:Molding sand is then made the casting mold of motorcycle wearing piece to be manufactured using baker drying together with core sand;Selection casting dispensing, including the casting dispensing including high-carbon steel, foundry return and spheroidal graphite cast-iron waste material, and uses flame baking by casting dispensing, wherein, the quality component content for casting dispensing is:15~25 parts of spheroidal graphite cast-iron waste material, 25~30 parts of high-carbon steel, 65~70 parts of foundry return;It is original iron melt that melting during the high-carbon steel in dispensing, foundry return and spheroidal graphite cast-iron waste material are sequentially loaded into electric furnace will be cast;Before being come out of the stove after smelting copper alloy, to the pretreating agent added in the original iron melt after being fused in electric furnace based on barium, supplemented by lanthanum.

Description

Casting technique for casting motorcycle wearing piece
Technical field
It is the founder for casting motorcycle wearing piece specifically the present invention relates to fields such as Casting Technologies Skill.
Background technology
Casting-smelting metal, manufactures casting mold, and motlten metal is poured into casting mold, obtained after solidification have definite shape, The forming method of size and function metals part blank.
Casting is, into meeting necessarily required liquid and pouring enter in casting mold, through cooled and solidified, to level treatment by Metal Melting The technical process of the casting of predetermined shape, size and performance is obtained afterwards.Cast blank reaches and exempts from mechanical adding because of almost shaping It is modem devices manufacture work that work or the purpose of a small amount of processing reduce cost and reduce Production Time castings to a certain extent One of fundamental technology of industry.
Casting is that the mankind are grasped than a kind of metal heat processing technique earlier, the history of about 6000.China about exists The heyday of bronze casting is had been enter between B.C. 1700~first 1000, at a relatively high level has been reached in technique.Casting Refer to that solid metallic is molten into the casting mold that liquid pours into given shape, treat the processing mode of its solidification forming.Had by ingot metal: Copper, iron, aluminium, tin, lead etc., the material of common casting mold is roughing sand, clay, waterglass, resin and other auxiliary materials.Special Processes of Metal Castings Casting mold include:Model casting, lost foam casting, permanent mold casting, ceramic mold casting etc..(roughing sand includes:Quartz sand, magnesia, Zircon sand, chromite sand, forsterite sand, aquamarine stone sand, graphite sand, iron sand etc.).
Department's penta side's ancient cooking vessel of mother of 875 kilograms of the weight of the Chinese Shang Dynasty, the Zeng Houyi honor disks of the Warring States Period, the transmissive mirror of the Western Han Dynastry, all It is the representative products of ancient times casting.The casting of early stage is mostly the instrument or apparatus of the aspects such as agricultural production, religion, life, skill Art color is dense.Casting technique at that time be with pottery Parallel Development, influenceed very big by pottery.
China cast out the ironcasting-Shanxi state casting mold ancient cooking vessel for seeing literature record earliest in the world at B.C. 513 years, weight About 270 kilograms.Europe also begins to produce ironcasting in Christian era eight around century.The appearance of ironcasting, expands the application of casting Scope.For example in 15~the 17th century, moral, Fa Deng states have successively laid many cast-iron pipes to resident's supplying drinking water.18th century The industrial revolution after, steam engine, weaving loom and railway etc. industry rise, casting enter for big industrial service the new period, casting The technology of making has begun with big development.
Into 20th century, quickly, one of its key factor is the progress of product technology to the development speed of casting, it is desirable to casting Various mechanical and physical performances are more preferable, while still having good machining property;Another reason be mechanical industry in itself and The development of other industry such as chemical industry, instrument, favourable material conditions are created to foundry industry.Such as the development of detection means, protect Raising and the stabilization of casting quality are demonstrate,proved, and condition has been provided to the theoretical development of casting;The invention of electron microscope etc., helps People are deep into the microcosmos of metal, detect the secret of metallic crystal, study the theory of metal freezing, instruct Foundry Production.
Casting classification:
Mainly there are sand casting and the major class of Special Processes of Metal Castings 2.
1st, ordinary sand casting, by the use of sand as molding material, casts, founding also known as sand, including greensand mold, dry sand mold and change The class of hardening sand mold 3 is learned, but simultaneously not all sand may be used to casting.Benefit is relatively low cost, because the Sha Kechong that mold is used Use again;Have the disadvantage that mold makes time-consuming, mold can not be reused in itself, must could obtain finished product after destruction.
1.1 sand molds (core) casting method:Wet type sand mold, resin self-setting sand type, waterglass sand mold, dry type and skin drying mould, reality Mold casting, vacuum moulding.
1.2 core manufacture methods:It is that selection is carried out according to core size, shape, production lot and specific working condition. Aborning, manual core making and machine coremaking can be divided on the whole.
2nd, Special Processes of Metal Castings, can be divided into Special Processes of Metal Castings that natural mineral products sandstone is main Modeling Material again by Modeling Material (such as model casting, loam moulding, shell moulded casting, negative pressure casting, cavityless casting, ceramic mold casting) and it is mainly to cast with metal Special Processes of Metal Castings (such as permanent mold casting, compression casting, continuously casting, low pressure casting, centrifugal casting) two classes of section bar material.
2.1 die cast methods
Mold is made using the fusing point metal high compared with raw material.Wherein it is subdivided into gravitation casting method, low pressure casting method and high pressure Casting.
The fusing point of mold is limited by, the metal that can be cast also has been limited.
2.2 lost wax casting methods
This method can be adventitia casting and solid casting.
The object of casting required for first being replicated with wax, is then immersed in the pond containing ceramic (or Ludox) and waits to do, make with Waxed duplicate covers last layer outer ceramic, and repeat step is enough to support (about 1/4 cun to 1/ of casting process until adventitia always 8 cun), the wax in mould is then melted, and detach mold.Thereafter mold needs repeatedly to be subject to high temperature, and enhancing hardness rear may be used to Casting.
The method has good accuracy, more can be used as the casting of refractory metal (such as titanium).But due to ceramic price It is quite high, and making needs heating for multiple times and complexity, therefore cost is rather expensive.
Moulding process
1. gravity casting:Sand is cast, diecasting.Molten metal bath is poured into die cavity by metal self gravitation.
2. compression casting:Low-pressure casting, high-pressure casting.Molten metal bath moment is pressed into by extra increased pressure is cast Moulding chamber.
Casting technique is generally included
1. casting mold (making liquid metal turn into the container of solid-state casting) prepares, and casting mold can be divided into sand mold, gold by material therefor Genotype, ceramic mould, chamotte mould, graphite mould etc., disposable type, semi-permanent mould and permanent type can be divided into by access times, and casting mold prepares Quality be influence casting quality principal element;
2. the fusing of casting metal and cast, casting metal (casting alloy) mainly has all kinds of cast irons, cast steel and is cast with Non-ferrous metal and alloy;
3. casting treatment and inspection, casting treatment includes removing core and cast(ing) surface foreign matter, excision dead head, relief grinding hair The ridge and heat treatment, shaping, antirust treatment and roughing etc. such as thorn and fash.
Casting technique can be divided into three essential parts, that is, cast metal preparation, casting mold and prepare and casting treatment.Casting metal Refer to the metal material for pouring cast part in Foundry Production, it is, with a kind of metallic element as main component, and to add other Metal or nonmetalloid and the alloy that constitutes, traditionally referred to as casting alloy, mainly has cast iron, cast steel and casts coloured conjunction Gold.
Metal Melting is not only simple fusing, also including smelting process, makes to pour the metal into casting mold, in temperature, is changed Study point and degree of purity aspect all meets the expected requirements.Therefore, to be carried out in fusion process each for the purpose of controlling quality Plant and check test, liquid metal can allow cast after every set quota is reached.Sometimes, in order to reach requirements at the higher level, gold Category liquid will also be processed after coming out of the stove through outside stove, such as desulfurization, vacuum outgas, external refining, breed or Metamorphism treatment.Smelting metal Conventional equipment has furnace cupola, electric arc furnaces, induction furnace, resistance furnace, reverberatory furnace etc..
Advantage:1st, complex-shaped part can be produced, especially the blank of complicated inner cavity;
2nd, wide adaptability, the conventional metal material of industry may be cast as, several grams to hundreds of tons;
3rd, raw material sources are wide, cheap, such as steel scrap, useless part, chip;
4th, the geomery and part of casting closely, reduce cutting output, belong to without machining;
5th, it is widely used, 70%~80% weight is all casting in 40%~70%, lathe in agricultural machinery.
Shortcoming:1st, mechanical performance is not so good as forging, such as organizes thick, and defect is more etc.;
2nd, in sand casting, single-piece, small lot batch manufacture, labor strength are big;
3rd, casting quality is unstable, and operation is more, and influence factor is complicated, is also easy to produce many defects.
The defect of casting has important influence to casting quality, therefore, it is that selection casting alloy and casting method are accomplished fluently Basis, should start with from the quality of casting, and combine the formation and preventing and treating of casting major defect.
With the progress of science and technology and flourishing for foundry industry, different casting methods has different casting mold preparing contents. By taking most widely used sand casting as an example, casting mold prepares to include Modeling Material preparation and moulding, makes the sport of core two work.Sand mold It is used for moulding in casting, makes the various raw material of core, such as foundry sands, moulding sand binder and other auxiliary materials, and is matched somebody with somebody by them Molding sand, core sand, coating for being made etc. are referred to as Modeling Material, and the task that Modeling Material prepares is requirement, the metal according to casting Property, select suitable roughing sand, binding agent and auxiliary material, they are mixed into certain performance according to a certain percentage then Molding sand and core sand.Conventional sand blender has simpson mill, reverse-flow puddle mixer and continuous muller.The latter is to aim at The design of mixed chemical self-hardening sand, continuous mixing, mulling speed is fast.
Moulding, make core be according to casting technique require, determining formative method, be ready to enter on the basis of Modeling Material Capable.The precision of casting and the economic effect of overall production process, depend primarily on this procedure.In the casting of many modernizations In workshop, moulding, make core and all realize mechanization or automation.Conventional sand mold moulding core-making installation has high, medium and low voltage moulding Machine, air impulse molding machine, box-less shoot squeeze molding machine of case, cold-box core making machine and hot box core-making machine, precoated sand core making machine etc..
After casting takes out from the casting mold for pouring into a mould cooling, with having cast gate, rising head, metallic bur power, fash, sand casting Casting also adhering to sand, it is therefore necessary to by cleaning process.Carry out the equipment of this work and have sanding machine, shot-blasting machine, pour and emit Mouth cutting machine etc..Sand-cast peeling is the poor procedure of working condition, so when formative method is selected, should use up Amount is considered to be created for peeling and facilitates condition.Some casting will also be post-processed because of particular/special requirement through casting, be such as heat-treated, Shaping, antirust treatment, roughing etc..
Casting technique can be divided into three essential parts, that is, cast metal preparation, casting mold and prepare and casting treatment.Casting metal Refer to the metal material for pouring cast part in Foundry Production, it is, with a kind of metallic element as main component, and to add other Metal or nonmetalloid and the alloy that constitutes, traditionally referred to as casting alloy, mainly has cast iron, cast steel and casts coloured conjunction Gold.
After casting takes out from the casting mold for pouring into a mould cooling, there are cast gate, rising head and metallic bur power fash, the casting of sand casting Also adhering to sand, it is therefore necessary to by cleaning process.Carrying out the equipment of this work has shot-blasting machine, cast gate rising head cutting machine Deng.Sand-cast peeling is the poor procedure of working condition, so when formative method is selected, should try one's best and consider Created for peeling and facilitate condition.Some casting will also be post-processed because of particular/special requirement through casting, such as heat treatment, shaping, antirust Treatment, roughing etc..
Casting is both economical blank forming method, and its economy can be more shown for complex-shaped part. Such as the cylinder body and cylinder cap of automobile engine, art work of propeller for vessels and exquisiteness etc..Some are difficult to the part for cutting, and such as fire The nickel-base alloy part of steam turbine cannot shape without casting method.
In addition, the accommodation of the accessory size of casting and weight is very wide, metal species are almost unrestricted;Part is in tool While having common mechanical performance, be other metal forming methods as forged also with the combination property such as wear-resisting, corrosion-resistant, shock-absorbing, Roll, weld, rushing etc. what is do not accomplished.Therefore the blank part for being produced with casting method in machine-building, in quantity and tonnage On be still so far most.
Foundry Production material often has various metals, coke, timber, plastics, gas and liquid fuel, Modeling Materials Material etc..Required equipment has the various stoves of metal smelting, the various puddle mixers for having mulling, has moulding to make the various of core and makes Type machine, core making machine, there is shakeout, shot-blasting machine of cleaning casting etc..Machine and equipment also for Special Processes of Metal Castings and permitted Many transports and the equipment of material treatment.
The characteristics of Foundry Production has different from other techniques, mainly wide adaptability, need to it is many with material and facility, pollution ring Border.Foundry Production can produce the pollution of dust, pernicious gas and Noise upon Environment, come more tight compared with other manufacturing technologies Weight is, it is necessary to take measures to be controlled.
The trend of Castings Development is that requirement casting has a more preferable combination property, precision higher, less surplus and Brighter and cleaner surface.Additionally, the requirement of energy-conservation and the social cry to natural environment rehabilitation also more and more higher.Will to adapt to these Ask, new casting alloy will be developed, novel process for smelting and new equipment will accordingly occur.
The automatic and mechanical degree of Foundry Production more will be sent out while improving constantly in terms of flexible production Exhibition, to expand the adaptability to different batches and multi-item production.The new technology of energy saving and raw material will be obtained preferentially Development, few new technology new equipment for producing or not producing pollution will be first subjected to attention.Quality Control Technology is in each procedure Detection and nondestructive inspection, stress determination aspect, will there is new development.
The content of the invention
It is an object of the invention to provide the casting technique for casting motorcycle wearing piece, motorcycle can be greatly improved The wearability and toughness of wearing piece, reduce the stomata on motorcycle wearing piece, extend the service life of motorcycle wearing piece, and behaviour Make simple, with low cost, the few advantage of casting flue dust.
The present invention is achieved through the following technical solutions:Casting technique for casting motorcycle wearing piece, including following step Suddenly:
1) molding sand is then made the casting mold of motorcycle wearing piece to be manufactured using baker drying together with core sand;
2) selection casting dispensing, including the casting dispensing including high-carbon steel, foundry return and spheroidal graphite cast-iron waste material, and will casting Dispensing uses flame baking, wherein, the quality component content for casting dispensing is:15~25 parts of spheroidal graphite cast-iron waste material, high-carbon steel 25 ~30 parts, 65~70 parts of foundry return;
3) high-carbon steel in casting dispensing after flame baking, foundry return and spheroidal graphite cast-iron waste material are sequentially loaded into electric furnace Middle melting is original iron melt, and in successively adding electric furnace according to lower tight loose principle when being fitted into casting dispensing, smelting temperature is 1500 ~1600 DEG C, and copper alloy is added in original iron melt, the weight/mass percentage composition of copper alloy be the casting dispensing total amount 1.2~ 1.5%;Circuit power is incrementally increased in fusion process, and often carries out smashing material operation;
4) through step 3), after smelting copper alloy, before coming out of the stove, be with barium to being added in the original iron melt after being fused in electric furnace Pretreating agent supplemented by main, lanthanum;
5) by step 4) in the original iron melt come out of the stove add the nodulizer to carry out spheroidising in nodularization bag, treat spheroidizing reacion knot Shu Hou, dispenses perlite slag making to purify original iron melt and skim at once on original iron melt;
6) to step 5) in skim after original iron melt in add inovulant carry out first time inoculation, then by original iron melt Pour into sprue cup, and second inoculation is carried out to addition sulphur oxygen inovulant in sprue cup, after inoculation terminates twice Perlite slag making is dispensed on original iron melt again to purify original iron melt and skim at once;
7) by step 6) in skim after original iron melt stand a period of time in the sprue cup after in step 1) in the casting that is made Motorcycle wearing piece semi-finished product are poured into type, the duration of pouring is no more than 8min, and pouring temperature is 1400-1500 DEG C;
8) by step 7) in motorcycle wearing piece semi-finished product annealed successively, quenched, temper;
9) by step 8) in treatment after motorcycle wearing piece semi-finished product be cooled to room temperature and through blast cleaning and machinery plus Work obtains motorcycle wearing piece finished product, then inspection storage.
Further is that the present invention is better achieved, especially using following set-up modes:The step 6) in, it is pregnant for the first time The chemical analysis mass percent of inovulant used is when educating treatment:Mg:2~3%, Si:65~67%, Ca:1.5~1.8%, Al:0.3~0.5%, S≤0.06%, O≤0.08%, remaining is Fe, wherein, the inovulant quality percentage for adding for the first time contains Measure to cast the 0.85~0.95% of dispensing total amount, the incubation time is 70~100s;The sulphur oxygen added during second inoculation Inovulant is cast dispensing total amount 0.22~0.27%, and the incubation time is 20~30s.
Further is that the present invention is better achieved, especially using following set-up modes:Step 5) described in nodulizer be Nickel magnesium alloy or yttrium-base heavy rare earth nodulizer, and add nodulizer weight/mass percentage composition be cast dispensing total amount 1.6~ 1.8%, the nodularization time is 70~75s.
Further is that the present invention is better achieved, especially using following set-up modes:In the step 6) it is pregnant for the first time Educating after treatment and pouring into also includes purification filtering step between sprue cup, and purification filtering step is specially:By first time womb Original iron melt after reason carries out filtration, purification using high temperature fiber screen pack.
Further is that the present invention is better achieved, especially using following set-up modes:In the step 7) in casting mold During cast original iron melt, first to alterant is added in original iron melt, 3~5s is then stood, casting is poured into again after carrying out metamorphic reaction In type, the chemical analysis mass percent of the alterant is:Rare earth silicon 80%, aluminium ingot 4%, bismuth ingot 2%, magnesium ingot 4%, tin slab 5%th, copper ingot 5%.
Further is that the present invention is better achieved, especially using following set-up modes:The step 8) specific treatment Technique is:
Annealing:Cooled down by motorcycle wearing piece semi-finished product stove heat to 950~980 DEG C and after 2~3h of insulation in blowing out, and stove To 300~400 DEG C, then turn on fire door and continue slow cooling and come out of the stove to 180~200 DEG C and be air cooled to room temperature;
Quenching:By the slow stove heat of motorcycle wearing piece semi-finished product after annealing to 600~630 DEG C and 0.5~1h of insulation, and After be put into fast cooling carried out in oil sump;
Tempering:Product after will be quenched enters stove again at room temperature and stove heat is to after being incubated 1-1.5h after 210~230 DEG C Come out of the stove air cooling.
Further is that the present invention is better achieved, especially using following set-up modes:In the step 3) in, electric furnace is Using the medium-frequency induction furnace of acid lining.
The present invention compared with prior art, with advantages below and beneficial effect:
The present invention can greatly improve the wearability and toughness of motorcycle wearing piece, reduce the gas on motorcycle wearing piece Hole, extends the service life of motorcycle wearing piece, and simple to operate, with low cost, the few advantage of casting flue dust.
Specific embodiment
The present invention is described in further detail with reference to embodiment, but embodiments of the present invention not limited to this.
Embodiment 1:
Casting technique for casting motorcycle wearing piece, can greatly improve the wearability of motorcycle wearing piece and tough Property, the stomata on motorcycle wearing piece is reduced, extend the service life of motorcycle wearing piece, and it is simple to operate, with low cost, The few advantage of casting flue dust, especially using following set-up modes:Comprise the following steps:
1) molding sand is then made the casting mold of motorcycle wearing piece to be manufactured using baker drying together with core sand;
2) selection casting dispensing, including the casting dispensing including high-carbon steel, foundry return and spheroidal graphite cast-iron waste material, and will casting Dispensing uses flame baking, wherein, the quality component content for casting dispensing is:15~25 parts of spheroidal graphite cast-iron waste material, high-carbon steel 25 ~30 parts, 65~70 parts of foundry return;
3) high-carbon steel in casting dispensing after flame baking, foundry return and spheroidal graphite cast-iron waste material are sequentially loaded into electric furnace Middle melting is original iron melt, and in successively adding electric furnace according to lower tight loose principle when being fitted into casting dispensing, smelting temperature is 1500 ~1600 DEG C, and copper alloy is added in original iron melt, the weight/mass percentage composition of copper alloy be the casting dispensing total amount 1.2~ 1.5%;Circuit power is incrementally increased in fusion process, and often carries out smashing material operation;
4) through step 3), after smelting copper alloy, before coming out of the stove, be with barium to being added in the original iron melt after being fused in electric furnace Pretreating agent supplemented by main, lanthanum;
5) by step 4) in the original iron melt come out of the stove add the nodulizer to carry out spheroidising in nodularization bag, treat spheroidizing reacion knot Shu Hou, dispenses perlite slag making to purify original iron melt and skim at once on original iron melt;
6) to step 5) in skim after original iron melt in add inovulant carry out first time inoculation, then by original iron melt Pour into sprue cup, and second inoculation is carried out to addition sulphur oxygen inovulant in sprue cup, after inoculation terminates twice Perlite slag making is dispensed on original iron melt again to purify original iron melt and skim at once;
7) by step 6) in skim after original iron melt stand a period of time in the sprue cup after in step 1) in the casting that is made Motorcycle wearing piece semi-finished product are poured into type, the duration of pouring is no more than 8min, and pouring temperature is 1400-1500 DEG C;
8) by step 7) in motorcycle wearing piece semi-finished product annealed successively, quenched, temper;
9) by step 8) in treatment after motorcycle wearing piece semi-finished product be cooled to room temperature and through blast cleaning and machinery plus Work obtains motorcycle wearing piece finished product, then inspection storage.
Embodiment 2:
The present embodiment is further optimized on the basis of above-described embodiment, further for the present invention is better achieved, Especially use following set-up modes:The step 6) in, the chemical analysis quality hundred of inovulant used during first time inoculation Point ratio is:Mg:2~3%, Si:65~67%, Ca:1.5~1.8%, Al:0.3~0.5%, S≤0.06%, O≤0.08%, Remaining is Fe, wherein, the inovulant weight/mass percentage composition for adding for the first time is cast dispensing total amount 0.85~0.95%, is bred Time is 70~100s;The sulphur oxygen inovulant added during second inoculation is cast dispensing total amount 0.22~0.27%, Incubation time is 20~30s.
Embodiment 3:
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this hair is better achieved It is bright, especially using following set-up modes:Step 5) described in nodulizer be nickel magnesium alloy or yttrium-base heavy rare earth nodulizer, and add Nodulizer weight/mass percentage composition be cast dispensing total amount 1.6~1.8%, the nodularization time be 70~75s.
Embodiment 4:
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this hair is better achieved It is bright, especially using following set-up modes:In the step 6) also include after first time inoculation and between pouring into sprue cup it is net Change filtration step, purification filtering step is specially:Original iron melt after first time inoculation is entered using high temperature fiber screen pack Row filtration, purification.
Embodiment 5:
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this hair is better achieved It is bright, especially using following set-up modes:In the step 7) in casting-up original iron melt when, first in original iron melt add become Matter agent, then stands 3~5s, is poured into casting mold again after carrying out metamorphic reaction, the chemical analysis quality percentage of the alterant Than for:Rare earth silicon 80%, aluminium ingot 4%, bismuth ingot 2%, magnesium ingot 4%, tin slab 5%, copper ingot 5%.
Embodiment 6:
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this hair is better achieved It is bright, especially using following set-up modes:The step 8) specific handling process be:
Annealing:Cooled down by motorcycle wearing piece semi-finished product stove heat to 950~980 DEG C and after 2~3h of insulation in blowing out, and stove To 300~400 DEG C, then turn on fire door and continue slow cooling and come out of the stove to 180~200 DEG C and be air cooled to room temperature;
Quenching:By the slow stove heat of motorcycle wearing piece semi-finished product after annealing to 600~630 DEG C and 0.5~1h of insulation, and After be put into fast cooling carried out in oil sump;
Tempering:Product after will be quenched enters stove again at room temperature and stove heat is to after being incubated 1-1.5h after 210~230 DEG C Come out of the stove air cooling.
Embodiment 7:
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this hair is better achieved It is bright, especially using following set-up modes:In the step 3) in, electric furnace is using the medium-frequency induction furnace of acid lining.
The above, is only presently preferred embodiments of the present invention, not does any formal limitation to the present invention, it is every according to Any simple modification, the equivalent variations made to above example according to technical spirit of the invention, each fall within protection of the invention Within the scope of.

Claims (7)

1. it is used to cast the casting technique of motorcycle wearing piece, it is characterised in that:Comprise the following steps:
1) molding sand is then made the casting mold of motorcycle wearing piece to be manufactured using baker drying together with core sand;
2) selection casting dispensing, including the casting dispensing including high-carbon steel, foundry return and spheroidal graphite cast-iron waste material, and will cast dispensing Using flame baking, wherein, the quality component content for casting dispensing is:15~25 parts of spheroidal graphite cast-iron waste material, high-carbon steel 25~30 Part, 65~70 parts of foundry return;
3) melted in electric furnace being sequentially loaded into by the high-carbon steel in casting dispensing after flame baking, foundry return and spheroidal graphite cast-iron waste material It is original iron melt to refine, in successively adding electric furnace according to the principle of lower tight upper pine when being fitted into casting dispensing, smelting temperature is 1500~ 1600 DEG C, and copper alloy is added in original iron melt, the weight/mass percentage composition of copper alloy be the casting dispensing total amount 1.2~ 1.5%;Circuit power is incrementally increased in fusion process, and often carries out smashing material operation;
4) through step 3), after smelting copper alloy, before coming out of the stove, in electric furnace fuse after original iron melt in add based on barium, lanthanum Supplemented by pretreating agent;
5) by step 4) in the original iron melt come out of the stove add the nodulizer to carry out spheroidising in nodularization bag, treat that spheroidizing reacion terminates Afterwards, perlite slag making is dispensed on original iron melt to purify original iron melt and skim at once;
6) to step 5) in skim after original iron melt in add inovulant carry out first time inoculation, then original iron melt is poured into In sprue cup, and second inoculation is carried out to addition sulphur oxygen inovulant in sprue cup, after inoculation terminates twice again Perlite slag making is dispensed on original iron melt to purify original iron melt and skim at once;
7) by step 6) in skim after original iron melt stand a period of time in the sprue cup after in step 1) in the casting mold that is made Motorcycle wearing piece semi-finished product are poured into, the duration of pouring is no more than 8min, and pouring temperature is 1400-1500 DEG C;
8) by step 7) in motorcycle wearing piece semi-finished product annealed successively, quenched, temper;
9) by step 8) in motorcycle wearing piece semi-finished product after treatment be cooled to room temperature and through blast cleaning and be machined To motorcycle wearing piece finished product, storage is then checked.
2. the casting technique for casting motorcycle wearing piece according to claim 1, it is characterised in that:The step 6) In, the chemical analysis mass percent of inovulant used is during first time inoculation:Mg:2~3%, Si:65~67%, Ca: 1.5~1.8%, Al:0.3~0.5%, S≤0.06%, O≤0.08%, remaining is Fe, wherein, the inovulant for adding for the first time Weight/mass percentage composition is cast dispensing total amount 0.85~0.95%, and the incubation time is 70~100s;During second inoculation The sulphur oxygen inovulant of addition is cast dispensing total amount 0.22~0.27%, and the incubation time is 20~30s.
3. the casting technique for casting motorcycle wearing piece according to claim 1, it is characterised in that:Step 5) in institute Nodulizer is stated for nickel magnesium alloy or yttrium-base heavy rare earth nodulizer, and the nodulizer weight/mass percentage composition for adding is casting dispensing total amount 1.6~1.8%, the nodularization time be 70~75s.
4. the casting technique for casting motorcycle wearing piece according to claim 1, it is characterised in that:In the step 6) after first time inoculation and pour into and also include purification filtering step between sprue cup, purification filtering step is specially:By Original iron melt after inoculation carries out filtration, purification using high temperature fiber screen pack.
5. the casting technique for casting motorcycle wearing piece according to claim 1, it is characterised in that:In the step 7) when in casting-up original iron melt, first to alterant is added in original iron melt, 3~5s is then stood, after carrying out metamorphic reaction It is poured into casting mold again, the chemical analysis mass percent of the alterant is:Rare earth silicon 80%, aluminium ingot 4%, bismuth ingot 2%, magnesium Ingot 4%, tin slab 5%, copper ingot 5%.
6. the casting technique for casting motorcycle wearing piece according to claim 1, it is characterised in that:The step 8) Specific handling process be:
Annealing:It is cooled to by motorcycle wearing piece semi-finished product stove heat to 950~980 DEG C and after 2~3h of insulation in blowing out, and stove 300~400 DEG C, then turn on fire door and continue slow cooling and come out of the stove to 180~200 DEG C and be air cooled to room temperature;
Quenching:By the slow stove heat of motorcycle wearing piece semi-finished product after annealing to 600~630 DEG C and 0.5~1h of insulation, then put Entering carries out fast cooling in oil sump;
Tempering:Product after will be quenched enters stove again at room temperature and stove heat is come out of the stove to after 210~230 DEG C after insulation 1-1.5h Air cooling.
7. the casting technique for casting motorcycle wearing piece according to claim any one of 1-6, it is characterised in that: The step 3) in, electric furnace is using the medium-frequency induction furnace of acid lining.
CN201611189911.9A 2016-12-21 2016-12-21 Casting technique for casting motorcycle wearing piece Withdrawn CN106734895A (en)

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CN107365936A (en) * 2017-06-15 2017-11-21 广西贺州市恒发机械铸造厂 A kind of preparation technology of high-chromium alloy cast-iron
CN108869586A (en) * 2018-09-06 2018-11-23 宁夏众信机械设备制造有限公司 A kind of brake holder and its production technology based on air-pressure disc type brake pincers
CN109048692A (en) * 2018-09-06 2018-12-21 扬中市飞宇磨具有限公司 A kind of High Strength Hydraulic equipment processing grinding abrasive disk and its processing method
CN111215577A (en) * 2019-11-26 2020-06-02 山西晋武能源有限公司 Production process of stirring pot before molding of cast briquette

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CN103934422A (en) * 2014-04-08 2014-07-23 大丰市飞腾铸造机械有限公司 Casting process of abrasion-resistant low-porosity shot blasting machine vane
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CN105803301A (en) * 2016-03-25 2016-07-27 福建省神悦铸造股份有限公司 Shell mold casting process

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Publication number Priority date Publication date Assignee Title
JP2002178102A (en) * 2000-12-13 2002-06-25 Isuzu Motors Ltd Core for casting and method for manufacturing core for casting cylinder head
CN103934422A (en) * 2014-04-08 2014-07-23 大丰市飞腾铸造机械有限公司 Casting process of abrasion-resistant low-porosity shot blasting machine vane
CN104862611A (en) * 2015-05-12 2015-08-26 河南省万隆精密铸造股份有限公司 Cast material for casting wear-resisting centrifugal cylinder and casting technology thereof
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107365936A (en) * 2017-06-15 2017-11-21 广西贺州市恒发机械铸造厂 A kind of preparation technology of high-chromium alloy cast-iron
CN108869586A (en) * 2018-09-06 2018-11-23 宁夏众信机械设备制造有限公司 A kind of brake holder and its production technology based on air-pressure disc type brake pincers
CN109048692A (en) * 2018-09-06 2018-12-21 扬中市飞宇磨具有限公司 A kind of High Strength Hydraulic equipment processing grinding abrasive disk and its processing method
CN111215577A (en) * 2019-11-26 2020-06-02 山西晋武能源有限公司 Production process of stirring pot before molding of cast briquette

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