CN104907498A - Casting technology of hydraulic valve - Google Patents
Casting technology of hydraulic valve Download PDFInfo
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- CN104907498A CN104907498A CN201510196070.3A CN201510196070A CN104907498A CN 104907498 A CN104907498 A CN 104907498A CN 201510196070 A CN201510196070 A CN 201510196070A CN 104907498 A CN104907498 A CN 104907498A
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Abstract
The invention discloses a casting technology of a hydraulic valve. The casting technology comprises the steps of casting mold making, smelting, casting, cooling heat treatment, polishing and warehousing. The casting technology has the advantages of simple operation, low cost, and few flue dusts in the casting process; and the hydraulic valve cast in the invention has the advantages of good wear resistance and toughness, guaranteeing of the quality of castings, and service life prolongation.
Description
Technical field
The present invention relates to a kind of casting technique of hydraulic part, be specifically related to a kind of casting technique of hydraulic valve.
Background technology
Hydraulic valve is one of key element in Hydraulic Power Transmission System, and along with the development of foundry engieering, the valve body of external identical type adopts casting method to obtain already.
Summary of the invention
Technical problem to be solved by this invention is, for the shortcoming that above prior art exists, a kind of casting technique of hydraulic valve is proposed, this casting technique is simple to operate, with low cost, during casting, flue dust is few, the hydraulic valve wearability cast out and good toughness, ensure that the quality of foundry goods, extend service life.
The technical scheme that the present invention solves above technical problem is:
A casting technique for hydraulic valve, the casting technique of this hydraulic valve specifically comprises the following steps:
(1) make casting mold according to the shape of hydraulic valve, and have cast gate on casting mold, then apply coating by casting mold, be then heated to 100-120 DEG C, insulation 30-40min, then continues to be heated to 200-220 DEG C, insulation 50-60min;
Mold material is resin sand core, and resin core sand comprises following component according to the mass fraction: quartz sand: 70-80 part, phenolic aldehyde furan resin-sand: 3-5 part, toluenesulfonic acid alcohol: 20-30 part, KH550 coupling agent: 2-4 part;
(2) cast raw material of hydraulic valve is carried out smelting and obtain cast raw material solution, hydraulic valve cast raw material comprises following component by mass percentage:
Fe:0.3-0.6%, Co:0.8-1.0%, Si:1-2%, Cu:0.01-0.06%, Cr:0.01-0.03%, Ti:0.05-0.08%, B:0.02-0.04%, Ni:0.5-1.0%, Sn:0.1-0.3%, Mn:0.1-0.2%, Zn:0.5-0.8%, Mg:0.7-0.9%, Li:0.01-0.03%, Pt:0.03-0.05%, Y:0.03-0.05%, N:0.01-0.02%, C:0.02-0.04%, P:0.01-0.03%, S:0.008-0.010%, residual elements: 0.05-0.20%, rare earth element: 0.2-0.8%, all the other are aluminium;
Rare earth element comprises following component by mass percentage: cerium: 7-9%, holmium: 5-9%, dysprosium: 15-18%, bait: 6-8%, lanthanum: 3-7%, terbium: 3-7%, europium: 10-14%, samarium: 8-10%, and surplus is lanthanide series;
Above-mentioned cast raw material is delivered in electric furnace at 1450-1550 DEG C, carries out solution, until be smelted into cast raw material solution, then in cast raw material solution, add nodulizer and carry out spheroidising 5-10min, then on cast raw material solution, the slag making of spreading perlite is also skimmed at once to purify cast raw material solution;
(3) the cast raw material solution left standstill 15-25min will obtained in step (2), then in the casting mold in step (1), cast forms hydraulic valve blank, pouring temperature controls at 1300-1400 DEG C, poring rate is 40-55kg/s, in casting process, add alterant in cast raw material solution;
(4) by water the hydraulic valve blank outpoured carry out cooling first compressed air be first cooled to 500-525 DEG C with the cooling velocity of 4-6 per second DEG C, and then progressively cool to room temperature, to hydraulic valve blank successively through normalizing, tempering and Tempering and Quenching, concrete operations are:
Normalizing: sent in stove by hydraulic valve blank and be heated to 700-800 DEG C, and stove is cooled to 400-425 DEG C, opens fire door subsequently and continues slow cooling to 200-220 DEG C of air cooling of coming out of the stove to room temperature;
Tempering: by the hydraulic valve blank stove heat after normalizing to 700-750 DEG C, being then incubated comes out of the stove after 10-15min carries out water-cooled or oil cooling to room temperature;
Tempering and Quenching: adopt a normalizing+double tempering, temperature is greater than second time temperature for the first time; Normalizing: formal fiery temperature 700-740 DEG C, is incubated 5-8min after temperature; First time tempering: adopt heat stepwise, first paragraph heating-up temperature is 800-820 DEG C, is incubated 10-15min after temperature, and second segment heating-up temperature is 720-750 DEG C, is incubated 8-10min after temperature, then carries out second time normalizing after air cooling to room temperature; Second time tempering: adopt heat stepwise, first paragraph heating-up temperature is 700-719 DEG C of heating, is incubated 15-20min after temperature, and second segment heating-up temperature is 650-690 DEG C of heating, is incubated 10-13min after temperature;
(5) the hydraulic valve blank after step (4) process is cooled to room temperature and obtains hydraulic valve finished product through blast cleaning and machining, and inspection warehouse-in.
The technical scheme that the present invention limits further is:
In the casting technique of aforementioned hydraulic valve body, the granularity of quartz sand is 40 or 70; Toluenesulfonic acid alcohol is the toluenesulfonic acid alcohol of concentration 60-65%.
In the casting technique of aforementioned hydraulic valve body, the preparation method of casting mold is specially: the quartz sand of 1/2nd amounts and toluenesulfonic acid alcohol are uniformly mixed 2-5min, the quartz sand of surplus and phenolic aldehyde furan resin-sand are uniformly mixed 3-6min simultaneously, then they are stirred conjunction mixed, close mixed 1-3min and then shake out tamping through 30-40min sclerosis acquisition casting mold.
In the casting technique of aforementioned hydraulic valve body, coating comprises following component by mass percentage: zirconium English powder: 90-93 part, phenolic resins: 2-4 part, organobentonite: 1.5-2.5 part, composite iron-titanium: 0.2-0.6 part, titanium dioxide: 0.5-1 part, tetra-n-butyl titanate: 1-2 part.
In the casting technique of aforementioned hydraulic valve body, nodulizer magnesium Antaciron, and the nodulizer mass percentage added is the 0.5-1.0% of cast raw material solution total amount.
In the casting technique of aforementioned hydraulic valve body, alterant comprises following component by mass percentage: rare earth silicon 95%, bismuth ingot 3%, aluminium ingot 2%.
The invention has the beneficial effects as follows:
Rare earth is added in component of the present invention, rare earth itself can refinement Al and Alalloy crystal grain, rare earth can with in aluminium and aluminium the impurity such as Fe, Si forms dystectic tiny compound, play non-spontaneous crystallization forming core, simultaneously, due to the surface-active action of rare earth, enhance the wetability of aluminum melt to these tiny compounds, enhance heterogeneous nucleation; Moreover, in the molten system of alloy, introduce rare earth, can TiAl be made
3, TiB
2metallographic structure become be easy to control, also have the good action of removal of impurities, degasification at melting middle rare earth, effectively ensure that the metallurgical quality of aluminum melt.
By the technological parameter of new casting mold formula and metallurgy and foundry in the present invention, and the measures such as the temperature of suitably raising smelting, reduction pouring temperature and control poring rate can effectively control casting solidification process, realize grain refinement and eliminate casting flaw, ensure that the quality of foundry goods.
The present invention adopts two sand three to mix method to prepare casting mold, can be used to complete at short notice, and the casting mold prepared is more firm, and intensity is high, ensures the quality at cast article; The present invention carries out post bake baking to casting mold, is to dry coating for the first time, and second time is to take out core gas as far as possible; Earthing coating on casting mold in the present invention, add surface strength and the heat endurance of resin sand, prevent molten iron from infiltrating core, improve the cleannes in casting mold and fineness, this coating can form one deck shell at cast(ing) surface, and shell easily comes off, eliminate the burr of foundry goods, vein and scab, significantly reduce sand removal workload, improve working condition, improve foundry goods cleannes.
The element refine pearlite such as the present invention adds Cu in cast raw material, manganese, reduce thin section spoken parts in traditional operas, improve big cross section structure sensitive properties; Mechanical property improves product strength, hardness, toughness; Serviceability improves the wearability of product, heat resistance agent corrosivity, meanwhile, improves the density of product.
The present invention after spheroidising spreading perlite to purify cast raw material solution, perlite is a kind of efficient deslagging agent, even spreading is behind the surface of cast raw material solution, stir a little and can be agglomerated into rapidly the skull being easy to metallic solution be separated, pure cast raw material solution can be obtained after pulling down skull, subduction foundry goods burning into sand, improve quality, and the cost of perlite itself is low, and not quick-friedly in use procedure not spatter, safe and reliable, easy to use, perlite is pollution-free to cast raw material solution, without infiltration, do not affect the mechanical performance of its chemical analysis and foundry goods, in using, smokeless free from dust and pernicious gas pollute, can environment purification, reach and carry out production strictly in line with rules and regulations.
The present invention adds magnesium Antaciron when spheroidising, and the graphite glomeration of crystallization is separated out.
After moulding by casting of the present invention obtains product, product is heat-treated and improve the combination property of product and namely there is hardness also there is certain toughness outward, the determination of heat treatment temperature should to obtain even and tiny austenite crystal for principle, to obtain tiny martensitic structure after quenching, growing up of austenite crystal is directly proportional to hardening heat, quenching is timely afterwards carries out temper to product, the stress produced when can not only eliminate quenching, the tempered martensite of some can also be obtained, ensure that the high rigidity of product turn improves the toughness of product simultaneously.
Detailed description of the invention
embodiment 1
The present embodiment provides a kind of casting technique of hydraulic valve, and the casting technique of this hydraulic valve specifically comprises the following steps:
(1) make casting mold according to the shape of hydraulic valve, and have cast gate on casting mold, then apply coating by casting mold, be then heated to 100 DEG C, insulation 35min, then continues to be heated to 220 DEG C, insulation 50min;
Coating comprises following component by mass percentage: zirconium English powder: 92 parts, phenolic resins: 2 parts, organobentonite: 2.0 parts, composite iron-titanium: 0.4 part, titanium dioxide: 0.5 part, tetra-n-butyl titanate: 1 part;
Mold material is resin sand core, and resin core sand comprises following component according to the mass fraction: granularity is the quartz sand of 70: 70 parts, phenolic aldehyde furan resin-sand: 4 parts, the toluenesulfonic acid alcohol of concentration 65%: 25 parts, KH550 coupling agent: 3 parts;
The preparation method of casting mold is specially: the quartz sand of 1/2nd amounts and toluenesulfonic acid alcohol are uniformly mixed 2min, the quartz sand of surplus and phenolic aldehyde furan resin-sand are uniformly mixed 3min simultaneously, then they are stirred conjunction mixed, close mixed 1min and then shake out tamping through 35min sclerosis acquisition casting mold;
(2) cast raw material of hydraulic valve is carried out smelting and obtain cast raw material solution, hydraulic valve cast raw material comprises following component by mass percentage:
Fe:0.3%, Co:1.0%, Si:1%, Cu:0.04%, Cr:0.02%, Ti:0.05%, B:0.02%, Ni:0.8%, Sn:0.2%, Mn:0.1%, Zn:0.8%, Mg:0.9%, Li:0.01%, Pt:0.05%, Y:0.05%, N:0.01%, C:0.04%, P:0.02%, S:0.008%, residual elements: 0.20%, rare earth element: 0.8%, all the other are aluminium;
Rare earth element comprises following component by mass percentage: cerium: 7%, holmium: 9%, dysprosium: 15%, bait: 6%, lanthanum: 3%, terbium: 5%, europium: 14%, samarium: 10%, and surplus is lanthanide series;
Above-mentioned cast raw material is delivered in electric furnace at 1450 DEG C, carries out solution, until be smelted into cast raw material solution, then in cast raw material solution, add magnesium Antaciron nodulizer carry out spheroidising 10min, the nodulizer mass percentage added is 0.5% of cast raw material solution total amount, and then on cast raw material solution, the slag making of spreading perlite is also skimmed at once to purify cast raw material solution;
(3) the cast raw material solution left standstill 20min will obtained in step (2), then in the casting mold in step (1), cast forms hydraulic valve blank, pouring temperature controls at 1300 DEG C, and poring rate is 55kg/s, in casting process, add alterant in cast raw material solution;
Alterant comprises following component by mass percentage: rare earth silicon 95%, bismuth ingot 3%, aluminium ingot 2%;
(4) by water the hydraulic valve blank outpoured carry out cooling first compressed air be first cooled to 500 DEG C with the cooling velocity of 4 DEG C per second, and then progressively cool to room temperature, to hydraulic valve blank successively through normalizing, tempering and Tempering and Quenching, concrete operations are:
Normalizing: sent in stove by hydraulic valve blank and be heated to 750 DEG C, and stove is cooled to 400 DEG C, opens fire door continuation slow cooling to 220 DEG C subsequently and comes out of the stove air cooling to room temperature;
Tempering: by the hydraulic valve blank stove heat after normalizing to 700 DEG C, being then incubated comes out of the stove after 15min carries out water-cooled or oil cooling to room temperature;
Tempering and Quenching: adopt a normalizing+double tempering, temperature is greater than second time temperature for the first time; Normalizing: formal fiery temperature 720 DEG C, is incubated 5min after temperature; First time tempering: adopt heat stepwise, first paragraph heating-up temperature is 800 DEG C, is incubated 10min after temperature, and second segment heating-up temperature is 735 DEG C, is incubated 8min after temperature, then carries out second time normalizing after air cooling to room temperature; Second time tempering: adopt heat stepwise, first paragraph heating-up temperature is 700 DEG C of heating, is incubated 15min after temperature, and second segment heating-up temperature is 670 DEG C of heating, is incubated 10min after temperature;
(5) the hydraulic valve blank after step (4) process is cooled to room temperature and obtains hydraulic valve finished product through blast cleaning and machining, and inspection warehouse-in.
embodiment 2
The present embodiment provides a kind of casting technique of hydraulic valve, and the casting technique of this hydraulic valve specifically comprises the following steps:
(1) make casting mold according to the shape of hydraulic valve, and have cast gate on casting mold, then apply coating by casting mold, be then heated to 120 DEG C, insulation 30min, then continues to be heated to 200 DEG C, insulation 55min;
Coating comprises following component by mass percentage: zirconium English powder: 90 parts, phenolic resins: 3 parts, organobentonite: 1.5 parts, composite iron-titanium: 0.2 part, titanium dioxide: 0.8 part, tetra-n-butyl titanate: 2 parts;
Mold material is resin sand core, and resin core sand comprises following component according to the mass fraction: granularity is the quartz sand of 40: 75 parts, phenolic aldehyde furan resin-sand: 3 parts, the toluenesulfonic acid alcohol of concentration 60%: 30 parts, KH550 coupling agent: 2 parts;
The preparation method of casting mold is specially: the quartz sand of 1/2nd amounts and toluenesulfonic acid alcohol are uniformly mixed 5min, the quartz sand of surplus and phenolic aldehyde furan resin-sand are uniformly mixed 4min simultaneously, then they are stirred conjunction mixed, close mixed 3min and then shake out tamping through 40min sclerosis acquisition casting mold;
(2) cast raw material of hydraulic valve is carried out smelting and obtain cast raw material solution, hydraulic valve cast raw material comprises following component by mass percentage:
Fe:0.6%, Co:0.8%, Si:2%, Cu:0.06%, Cr:0.01%, Ti:0.08%, B:0.04%, Ni:1.0%, Sn:0.3%, Mn:0.2%, Zn:0.5%, Mg:0.7%, Li:0.03%, Pt:0.03%, Y:0.04%, N:0.02%, C:0.02%, P:0.03%, S:0.010%, residual elements: 0.05%, rare earth element: 0.2%, all the other are aluminium;
Rare earth element comprises following component by mass percentage: cerium: 9%, holmium: 5%, dysprosium: 18%, bait: 7%, lanthanum: 5%, terbium: 7%, europium: 12%, samarium: 8%, and surplus is lanthanide series;
Above-mentioned cast raw material is delivered in electric furnace at 1500 DEG C, carries out solution, until be smelted into cast raw material solution, then in cast raw material solution, add magnesium Antaciron nodulizer carry out spheroidising 8min, the nodulizer mass percentage added is 1.0% of cast raw material solution total amount, and then on cast raw material solution, the slag making of spreading perlite is also skimmed at once to purify cast raw material solution;
(3) the cast raw material solution left standstill 15min will obtained in step (2), then in the casting mold in step (1), cast forms hydraulic valve blank, pouring temperature controls at 1350 DEG C, and poring rate is 40kg/s, in casting process, add alterant in cast raw material solution;
Alterant comprises following component by mass percentage: rare earth silicon 95%, bismuth ingot 3%, aluminium ingot 2%;
(4) by water the hydraulic valve blank outpoured carry out cooling first compressed air be first cooled to 510 DEG C with the cooling velocity of 5 DEG C per second, and then progressively cool to room temperature, to hydraulic valve blank successively through normalizing, tempering and Tempering and Quenching, concrete operations are:
Normalizing: sent in stove by hydraulic valve blank and be heated to 700 DEG C, and stove is cooled to 410 DEG C, opens fire door continuation slow cooling to 210 DEG C subsequently and comes out of the stove air cooling to room temperature;
Tempering: by the hydraulic valve blank stove heat after normalizing to 750 DEG C, being then incubated comes out of the stove after 10min carries out water-cooled or oil cooling to room temperature;
Tempering and Quenching: adopt a normalizing+double tempering, temperature is greater than second time temperature for the first time; Normalizing: formal fiery temperature 700 DEG C, is incubated 8min after temperature; First time tempering: adopt heat stepwise, first paragraph heating-up temperature is 810 DEG C, is incubated 12min after temperature, and second segment heating-up temperature is 720 DEG C, is incubated 9min after temperature, then carries out second time normalizing after air cooling to room temperature; Second time tempering: adopt heat stepwise, first paragraph heating-up temperature is 719 DEG C of heating, is incubated 20min after temperature, and second segment heating-up temperature is 650 DEG C of heating, is incubated 13min after temperature;
(5) the hydraulic valve blank after step (4) process is cooled to room temperature and obtains hydraulic valve finished product through blast cleaning and machining, and inspection warehouse-in.
embodiment 3
The present embodiment provides a kind of casting technique of hydraulic valve, and the casting technique of this hydraulic valve specifically comprises the following steps:
(1) make casting mold according to the shape of hydraulic valve, and have cast gate on casting mold, then apply coating by casting mold, be then heated to 110 DEG C, insulation 40min, then continues to be heated to 210 DEG C, insulation 60min;
Coating comprises following component by mass percentage: zirconium English powder: 93 parts, phenolic resins: 4 parts, organobentonite: 2.5 parts, composite iron-titanium: 0.6 part, titanium dioxide: 1 part, tetra-n-butyl titanate: 2 parts;
Mold material is resin sand core, and resin core sand comprises following component according to the mass fraction: granularity is the quartz sand of 70: 80 parts, phenolic aldehyde furan resin-sand: 5 parts, the toluenesulfonic acid alcohol of concentration 62%: 20 parts, KH550 coupling agent: 4 parts;
The preparation method of casting mold is specially: the quartz sand of 1/2nd amounts and toluenesulfonic acid alcohol are uniformly mixed 3min, the quartz sand of surplus and phenolic aldehyde furan resin-sand are uniformly mixed 6min simultaneously, then they are stirred conjunction mixed, close mixed 2min and then shake out tamping through 30min sclerosis acquisition casting mold;
(2) cast raw material of hydraulic valve is carried out smelting and obtain cast raw material solution, hydraulic valve cast raw material comprises following component by mass percentage:
Fe:0.4%, Co:0.9%, Si:1%, Cu:0.01%, Cr:0.03%, Ti:0.07%, B:0.03%, Ni:0.5%, Sn:0.1%, Mn:0.1%, Zn:0.6%, Mg:0.8%, Li:0.02%, Pt:0.04%, Y:0.03%, N:0.01%, C:0.03%, P:0.01%, S:0.009%, residual elements: 0.1%, rare earth element: 0.5%, all the other are aluminium;
Rare earth element comprises following component by mass percentage: cerium: 8%, holmium: 7%, dysprosium: 17%, bait: 8%, lanthanum: 7%, terbium: 3%, europium: 10%, samarium: 9%, and surplus is lanthanide series;
Above-mentioned cast raw material is delivered in electric furnace at 1550 DEG C, carries out solution, until be smelted into cast raw material solution, then in cast raw material solution, add magnesium Antaciron nodulizer carry out spheroidising 5min, the nodulizer mass percentage added is 0.8% of cast raw material solution total amount, and then on cast raw material solution, the slag making of spreading perlite is also skimmed at once to purify cast raw material solution;
(3) the cast raw material solution left standstill 25min will obtained in step (2), then in the casting mold in step (1), cast forms hydraulic valve blank, pouring temperature controls at 1400 DEG C, and poring rate is 48kg/s, in casting process, add alterant in cast raw material solution;
Alterant comprises following component by mass percentage: rare earth silicon 95%, bismuth ingot 3%, aluminium ingot 2%;
(4) by water the hydraulic valve blank outpoured carry out cooling first compressed air be first cooled to 525 DEG C with the cooling velocity of 6 DEG C per second, and then progressively cool to room temperature, to hydraulic valve blank successively through normalizing, tempering and Tempering and Quenching, concrete operations are:
Normalizing: sent in stove by hydraulic valve blank and be heated to 800 DEG C, and stove is cooled to 425 DEG C, opens fire door continuation slow cooling to 200 DEG C subsequently and comes out of the stove air cooling to room temperature;
Tempering: by the hydraulic valve blank stove heat after normalizing to 720 DEG C, being then incubated comes out of the stove after 12min carries out water-cooled or oil cooling to room temperature;
Tempering and Quenching: adopt a normalizing+double tempering, temperature is greater than second time temperature for the first time; Normalizing: formal fiery temperature 740 DEG C, is incubated 7min after temperature; First time tempering: adopt heat stepwise, first paragraph heating-up temperature is 820 DEG C, is incubated 15min after temperature, and second segment heating-up temperature is 750 DEG C, is incubated 10min after temperature, then carries out second time normalizing after air cooling to room temperature; Second time tempering: adopt heat stepwise, first paragraph heating-up temperature is 708 DEG C of heating, is incubated 18min after temperature, and second segment heating-up temperature is 690 DEG C of heating, is incubated 11min after temperature;
(5) the hydraulic valve blank after step (4) process is cooled to room temperature and obtains hydraulic valve finished product through blast cleaning and machining, and inspection warehouse-in.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (6)
1. a casting technique for hydraulic valve, is characterized in that, the casting technique of this hydraulic valve specifically comprises the following steps:
(1) make casting mold according to the shape of hydraulic valve, and have cast gate on casting mold, then apply coating by casting mold, be then heated to 100-120 DEG C, insulation 30-40min, then continues to be heated to 200-220 DEG C, insulation 50-60min;
Described mold material is resin sand core, and described resin core sand comprises following component according to the mass fraction: quartz sand: 70-80 part, phenolic aldehyde furan resin-sand: 3-5 part, toluenesulfonic acid alcohol: 20-30 part, KH550 coupling agent: 2-4 part;
(2) cast raw material of hydraulic valve is carried out smelting and obtain cast raw material solution, described hydraulic valve cast raw material comprises following component by mass percentage:
Fe:0.3-0.6%, Co:0.8-1.0%, Si:1-2%, Cu:0.01-0.06%, Cr:0.01-0.03%, Ti:0.05-0.08%, B:0.02-0.04%, Ni:0.5-1.0%, Sn:0.1-0.3%, Mn:0.1-0.2%, Zn:0.5-0.8%, Mg:0.7-0.9%, Li:0.01-0.03%, Pt:0.03-0.05%, Y:0.03-0.05%, N:0.01-0.02%, C:0.02-0.04%, P:0.01-0.03%, S:0.008-0.010%, residual elements: 0.05-0.20%, rare earth element: 0.2-0.8%, all the other are aluminium;
Described rare earth element comprises following component by mass percentage: cerium: 7-9%, holmium: 5-9%, dysprosium: 15-18%, bait: 6-8%, lanthanum: 3-7%, terbium: 3-7%, europium: 10-14%, samarium: 8-10%, and surplus is lanthanide series;
Above-mentioned cast raw material is delivered in electric furnace at 1450-1550 DEG C, carries out solution, until be smelted into cast raw material solution, then in cast raw material solution, add nodulizer and carry out spheroidising 5-10min, then on cast raw material solution, the slag making of spreading perlite is also skimmed at once to purify cast raw material solution;
(3) the cast raw material solution left standstill 15-25min will obtained in step (2), then in the casting mold in step (1), cast forms hydraulic valve blank, pouring temperature controls at 1300-1400 DEG C, poring rate is 40-55kg/s, in casting process, add alterant in cast raw material solution;
(4) by water the hydraulic valve blank outpoured carry out cooling first compressed air be first cooled to 500-525 DEG C with the cooling velocity of 4-6 per second DEG C, and then progressively cool to room temperature, to hydraulic valve blank successively through normalizing, tempering and Tempering and Quenching, concrete operations are:
Normalizing: sent in stove by hydraulic valve blank and be heated to 700-800 DEG C, and stove is cooled to 400-425 DEG C, opens fire door subsequently and continues slow cooling to 200-220 DEG C of air cooling of coming out of the stove to room temperature;
Tempering: by the hydraulic valve blank stove heat after normalizing to 700-750 DEG C, being then incubated comes out of the stove after 10-15min carries out water-cooled or oil cooling to room temperature;
Tempering and Quenching: adopt a normalizing+double tempering, temperature is greater than second time temperature for the first time; Normalizing: formal fiery temperature 700-740 DEG C, is incubated 5-8min after temperature; First time tempering: adopt heat stepwise, first paragraph heating-up temperature is 800-820 DEG C, is incubated 10-15min after temperature, and second segment heating-up temperature is 720-750 DEG C, is incubated 8-10min after temperature, then carries out second time normalizing after air cooling to room temperature; Second time tempering: adopt heat stepwise, first paragraph heating-up temperature is 700-719 DEG C of heating, is incubated 15-20min after temperature, and second segment heating-up temperature is 650-690 DEG C of heating, is incubated 10-13min after temperature;
(5) the hydraulic valve blank after step (4) process is cooled to room temperature and obtains hydraulic valve finished product through blast cleaning and machining, and inspection warehouse-in.
2. the casting technique of hydraulic valve according to claim 1, is characterized in that: the granularity of described quartz sand is 40 or 70; Described toluenesulfonic acid alcohol is the toluenesulfonic acid alcohol of concentration 60-65%.
3. the casting technique of hydraulic valve according to claim 1, it is characterized in that: the preparation method of described casting mold is specially: the quartz sand of 1/2nd amounts and toluenesulfonic acid alcohol are uniformly mixed 2-5min, the quartz sand of surplus and phenolic aldehyde furan resin-sand are uniformly mixed 3-6min simultaneously, then they are stirred conjunction mixed, close mixed 1-3min and then shake out tamping through 30-40min sclerosis acquisition casting mold.
4. the casting technique of hydraulic valve according to claim 1, it is characterized in that: described coating comprises following component by mass percentage: zirconium English powder: 90-93 part, phenolic resins: 2-4 part, organobentonite: 1.5-2.5 part, composite iron-titanium: 0.2-0.6 part, titanium dioxide: 0.5-1 part, tetra-n-butyl titanate: 1-2 part.
5. the casting technique of hydraulic valve according to claim 1, is characterized in that: described nodulizer magnesium Antaciron, and the nodulizer mass percentage added is the 0.5-1.0% of described cast raw material solution total amount.
6. the casting technique of hydraulic valve according to claim 1, is characterized in that: described alterant comprises following component by mass percentage: rare earth silicon 95%, bismuth ingot 3%, aluminium ingot 2%.
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| CN201510196070.3A CN104907498A (en) | 2015-04-23 | 2015-04-23 | Casting technology of hydraulic valve |
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| CN201510196070.3A CN104907498A (en) | 2015-04-23 | 2015-04-23 | Casting technology of hydraulic valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105200280A (en) * | 2015-10-20 | 2015-12-30 | 无锡阳工机械制造有限公司 | Hydraulic valve with high abrasion resistance |
| CN105964986A (en) * | 2016-05-23 | 2016-09-28 | 安徽鑫宏机械有限公司 | Casting method for tungsten-titanium alloy surface modified composite valve body |
| CN106678408A (en) * | 2016-12-20 | 2017-05-17 | 铜陵市经纬流体科技有限公司 | Check valve body suitable for acid solutions |
| CN106756576A (en) * | 2016-12-14 | 2017-05-31 | 苏州富艾姆工业设备有限公司 | A kind of production technology of automobile engine exhaust system support |
| CN106756278A (en) * | 2016-12-27 | 2017-05-31 | 温州瑞尔金属制造有限公司 | A kind of preparation technology of ball valve body |
| CN106756331A (en) * | 2016-12-14 | 2017-05-31 | 苏州纽东精密制造科技有限公司 | A kind of automotive hub and its processing method |
| CN107252875A (en) * | 2017-06-23 | 2017-10-17 | 扬中市第蝶阀厂有限公司 | A kind of manufacture method of high intensity valve body |
| CN107263029A (en) * | 2017-06-23 | 2017-10-20 | 扬中市第蝶阀厂有限公司 | A kind of Albrac valve body manufacturing process |
| CN107267716A (en) * | 2017-06-23 | 2017-10-20 | 江苏丰东热处理及表面改性工程技术研究有限公司 | A kind of composite heat treating process |
| CN107287458A (en) * | 2017-06-20 | 2017-10-24 | 合肥博创机械制造有限公司 | A kind of method for casting aluminium alloy |
| CN107716858A (en) * | 2017-11-14 | 2018-02-23 | 张剑 | A kind of production technology of carbon steel valve |
| CN107716866A (en) * | 2017-11-14 | 2018-02-23 | 曹安飞 | A kind of production technology of water-saving closet sewage draining valve |
| CN107893198A (en) * | 2017-11-14 | 2018-04-10 | 曹安飞 | Air bleeding valve and its casting technique in a kind of pipe-line system |
| CN107999704A (en) * | 2017-11-21 | 2018-05-08 | 聊城科瑞汽车零部件有限公司 | A kind of high-pressure oil pump delivery valve holder processing technology |
| WO2019127800A1 (en) * | 2017-12-27 | 2019-07-04 | 苏州明志科技有限公司 | Sand mixing process for improving comprehensive property of resin sand |
| CN111438335A (en) * | 2020-03-30 | 2020-07-24 | 安徽建盛铸业有限公司 | Hydraulic valve body casting process |
| CN113957309A (en) * | 2021-12-23 | 2022-01-21 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Alloy, electrode and battery thereof |
| CN114558985A (en) * | 2022-01-25 | 2022-05-31 | 繁昌县金科机电科技股份有限公司 | Valve body casting equipment and casting process thereof |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105200280A (en) * | 2015-10-20 | 2015-12-30 | 无锡阳工机械制造有限公司 | Hydraulic valve with high abrasion resistance |
| CN105964986A (en) * | 2016-05-23 | 2016-09-28 | 安徽鑫宏机械有限公司 | Casting method for tungsten-titanium alloy surface modified composite valve body |
| CN106756576A (en) * | 2016-12-14 | 2017-05-31 | 苏州富艾姆工业设备有限公司 | A kind of production technology of automobile engine exhaust system support |
| CN106756331A (en) * | 2016-12-14 | 2017-05-31 | 苏州纽东精密制造科技有限公司 | A kind of automotive hub and its processing method |
| CN106678408A (en) * | 2016-12-20 | 2017-05-17 | 铜陵市经纬流体科技有限公司 | Check valve body suitable for acid solutions |
| CN106756278A (en) * | 2016-12-27 | 2017-05-31 | 温州瑞尔金属制造有限公司 | A kind of preparation technology of ball valve body |
| CN107287458A (en) * | 2017-06-20 | 2017-10-24 | 合肥博创机械制造有限公司 | A kind of method for casting aluminium alloy |
| CN107267716A (en) * | 2017-06-23 | 2017-10-20 | 江苏丰东热处理及表面改性工程技术研究有限公司 | A kind of composite heat treating process |
| CN107263029A (en) * | 2017-06-23 | 2017-10-20 | 扬中市第蝶阀厂有限公司 | A kind of Albrac valve body manufacturing process |
| CN107252875A (en) * | 2017-06-23 | 2017-10-17 | 扬中市第蝶阀厂有限公司 | A kind of manufacture method of high intensity valve body |
| CN107716858A (en) * | 2017-11-14 | 2018-02-23 | 张剑 | A kind of production technology of carbon steel valve |
| CN107716866A (en) * | 2017-11-14 | 2018-02-23 | 曹安飞 | A kind of production technology of water-saving closet sewage draining valve |
| CN107893198A (en) * | 2017-11-14 | 2018-04-10 | 曹安飞 | Air bleeding valve and its casting technique in a kind of pipe-line system |
| CN107999704A (en) * | 2017-11-21 | 2018-05-08 | 聊城科瑞汽车零部件有限公司 | A kind of high-pressure oil pump delivery valve holder processing technology |
| WO2019127800A1 (en) * | 2017-12-27 | 2019-07-04 | 苏州明志科技有限公司 | Sand mixing process for improving comprehensive property of resin sand |
| CN111438335A (en) * | 2020-03-30 | 2020-07-24 | 安徽建盛铸业有限公司 | Hydraulic valve body casting process |
| CN113957309A (en) * | 2021-12-23 | 2022-01-21 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Alloy, electrode and battery thereof |
| CN113957309B (en) * | 2021-12-23 | 2022-04-22 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Alloy, electrode and battery thereof |
| CN114558985A (en) * | 2022-01-25 | 2022-05-31 | 繁昌县金科机电科技股份有限公司 | Valve body casting equipment and casting process thereof |
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