CN106636927B - A kind of production technology of high-speed gear box cooling water pump - Google Patents

A kind of production technology of high-speed gear box cooling water pump Download PDF

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CN106636927B
CN106636927B CN201610892848.9A CN201610892848A CN106636927B CN 106636927 B CN106636927 B CN 106636927B CN 201610892848 A CN201610892848 A CN 201610892848A CN 106636927 B CN106636927 B CN 106636927B
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casting
water pump
cooling water
gear box
speed gear
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CN106636927A (en
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陆树根
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Nanjing Chuan Bei High-Speed Drive Machinery Co Ltd
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Nanjing Chuan Bei High-Speed Drive Machinery Co Ltd
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    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
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    • C21D—MODIFYING 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
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Abstract

The invention discloses a kind of high-speed gear box cooling water pump, the mass percent of each component is：C：0.02 0.03%, Al:1.16‑1.83%,Zn:1.22‑1.39%,Mn：0.37 0.58%, S：≤ 0.030%, P：≤ 0.030%, Cr：0.02 0.04%, Ni：0.84 1.19%, Cu：0.25 0.29%, V：0.02 0.05%, Mo：0.06 0.09%, Ti：1.33 1.59%, B：0.01 0.02%, Pd：0.02‑0.04%,Pt：0.33‑0.49%,W：0.23‑0.36%,Nd：0.13‑0.16%,Ce：0.11‑0.12%,Eu：0.07‑0.15%,Lu:0.03 0.07%, Au：0.33 0.42%, Ag:0.86 1.04%, Ga：0.01 0.02%, Y：0.21 0.27%, Sn：1.34 1.58%, Zr：0.02 0.07%, Re：0.01 0.03%, Bi：0.05 0.09%, magnesia：0.33 0.37%, cupric oxide：0.08 0.13%, iron oxide：0.12 0.18%, manganese dioxide：0.06 0.09%, Kocide SD：0.05 0.08%, iron hydroxide：0.03 0.05%, surplus Fe.

Description

A kind of production technology of high-speed gear box cooling water pump
Technical field
The present invention relates to a kind of production technology of high-speed gear box cooling water pump, belong to technical field of automobile accessories.
Background technology
Need to cool down during internal combustion engine to raise to prevent temperature, generally use cooling water pump press-in cooling water carries out water cooling； Since Structure of Internal-Combustion Engine is complicated, its internal cooling water channel curved narrow is big to resistance to water-flow, therefore cooling water pump is in certain operating mode Having been become with the uninterrupted under use condition influences the key of internal combustion engine cooling effect.
Existing high-speed gear box cooling water pump is largely mechanical water pump, and the operating of water pump is passed by engine spindle Dynamic, when engine speed is high, pump rotary speed is just high, and flow just increases, and when engine speed is low, flow reduces；Due to engine During cold start-up, cooling system work is not required in engine in itself, but engine water pump can start work as engine operates Make, engine warm-up time is longer, and engine consumption is higher, and discharge is poor etc. can be caused, the flow of its water pump cannot be according to hair The demand of motivation cooling system is adjusted.
The content of the invention
The technical problem to be solved in the present invention is in view of the shortcomings of the prior art, proposing that a kind of flow is big, cool down fast and energy The production technology of enough high-speed gear box cooling water pumps being adjusted according to the demand of engine-cooling system.
The present invention is to solve the technical solution that above-mentioned technical problem proposes to be：A kind of high-speed gear box cooling water pump is high Fast gear-box is with the mass percent of each component in cooling water pump：C：0.02-0.03%, Al:1.16-1.83%,Zn:1.22- 1.39%,Mn：0.37-0.58%, S：≤ 0.030%, P：≤ 0.030%, Cr：0.02-0.04%, Ni：0.84-1.19%, Cu： 0.25-0.29%, V：0.02-0.05%, Mo：0.06-0.09%, Ti：1.33-1.59%, B：0.01-0.02%, Pd：0.02- 0.04%,
Pt：0.33-0.49%,W：0.23-0.36%,Nd：0.13-0.16%,Ce：0.11-0.12%,Eu：0.07-0.15%, Lu:0.03-0.07%, Au：0.33-0.42%, Ag:0.86-1.04%, Ga：0.01-0.02%, Y：0.21-0.27%, Sn：1.34- 1.58%, Zr：0.02-0.07%, Re：0.01-0.03%, Bi：0.05-0.09%, magnesia：0.33-0.37%, cupric oxide： 0.08-0.13%, iron oxide：0.12-0.18%, manganese dioxide：0.06-0.09%, Kocide SD：0.05-0.08%, hydrogen-oxygen Change iron：0.03-0.05%, surplus Fe；
The production technology of high-speed gear box cooling water pump comprises the following steps：
(i) melting raw material：
A, added raw materials into by predetermined high-speed gear box with the mass percent of each component in cooling water pump in smelting furnace, will Temperature in smelting furnace brings up to 1520 degrees Celsius to 1540 degrees Celsius, and raw material is smelted to form alloy solution；
B, alloy solution obtained in the previous step is cooled down, water cooling and air-cooled combination during cooling, first use water cooling with Alloy solution water cooling to 450-460 DEG C of formation alloy, is then air-cooled to 340-350 DEG C, then adopt by the cooldown rate of 15-18 DEG C/s With water cooling with the cooldown rate of 18-20 DEG C/s by alloy water cooling to room temperature；
C, heat, previous step alloy after cooling is subjected to secondary smelting in smelting furnace, the temperature in smelting furnace is brought up to 1580 degrees Celsius to 1610 degrees Celsius, alloy forms alloy solution by secondary smelting；
D, the alloy solution in smelting furnace is poured into electric furnace, sequentially adds nodulizer and inovulant in the bag hole of casting ladle, use Sheet metal is covered in nodulizer, on inovulant, and consolidates, and the thickness of sheet metal is 0.5mm to 1mm；
Alloy solution in electric furnace is poured into the opposite side of casting ladle indent, spheroidizing reacion 70s to 85s, spheroidizing reacion fills e, After point, one layer of collection slag agent is spread, is quickly skimmed；
F, it is quick skim after, be sprinkled into swelling perlite powder on alloy solution surface immediately, twice of slag hitting, after the completion of slag hitting, Alloy solution to be cast is formed, was poured in five minutes；
(ii) prepared by wax-pattern：Using mechanical casting, make consistent with the impeller size of high-speed gear box cooling water pump and wrap Wax-pattern containing insulated feeder, and wax-pattern is repaired, wax-pattern is cleaned using wax base cleaning agent afterwards；
(iii) shell mold sand mold is (ii) made on obtained wax-pattern in step；
(iv) dewax：Using steam dewaxing, the pressure of steam is 0.8MPa, and the time is 25-45 minutes, and shell mold is made；
(v) shell mold roasts；
(vi) by step, (v) roasting shell mold is put into the sandbox prepared by formative technology, and blend compounds band is sealed in the shell mold For the cast gate and insulated feeder of cast, the mixed sand by preparation is then placed in, foundry jolter is used again after piling mixed sand Ram-jolt is carried out, forms sand mold；
(vii) pour into a mould
Before cast with the air-heater of 400-420 degrees Celsius of constant temperature shell mold is carried out baking 1 it is small when, during cast, pouring temperature For 1550-1650 degrees Celsius, after cast, casting kept the temperature in sand mold 2-3 it is small when；After moulding by casting, demoulded, crush shell Mould, cuts off the insulated feeder of casting, obtains casting；
(viii) the casting after moulding by casting is machined, and cylinder iron Vehicle Processing water outlet pump case, shaft and cover board；
(ix) the casting after Vehicle Processing is heat-treated, concrete technology is：
A, heat：Casting is heated to 640-665 DEG C, and keeps the temperature 45-55min；
B, cool down：The air-cooled cooldown rate with 15-18 DEG C/s is used to accelerate casting after being cooled to 410-420 DEG C, then it is empty It is cooled to room temperature；
C, once it is tempered：After casting is heated to 560-575 DEG C of tempering 41-43min, treats warm 30-45s, make automobile variable speed Case gear temperature homogenizes, and is accelerated afterwards with the cooldown rate of 28-35 DEG C/s after being cooled to 355-365 DEG C, then be air-cooled to room temperature；
D, double tempering：Room temperature is air-cooled to after automobile gearbox gear is heated to 614-618 DEG C of tempering 53-59min；
E, the casting after double tempering is handled is put into well formula gas heating furnace, casting is carried out at Quench heating Reason, quenching and preserving heat temperature are 740 DEG C ± 10 DEG C, soaking time 1.2-1.5h；Water is quickly put into after the completion of casting Quench heating Groove water cooling 15-25 minutes, cooling bath water temperature are controlled at 25-50 DEG C；
(x) the casting after heat treatment is covered into china protective layer, concrete technology is：
A, dispensing：The mass percent component of each component is in china protective layer：Quartz:3.13-3.32%, feldspar: 3.53-3.45%, bone black：5.21-5.36%, talcum powder：4.11-4.23%, aluminium powder：3.15-3.33%, silica flour：3.46-3.58%、 Calcium oxide：1.23-1.35%, magnesia：2.41-2.56%, surplus are kaolin；
B, crush:Each raw material of china protective layer is added by mass percentage mixing and ball milling is carried out in ball mill, added Water forms glaze slip；
C, iron removaling is sieved：Above-mentioned glaze slip is filtered with the sieve of 150 mesh, iron remover iron removaling is used after filtering；
D, process is stirred in filter：Water unnecessary in glaze slip in previous step is filtered off, the moisture content of glaze slip is in 29-36% after filter
E, coat：The glaze slip modulated is coated in the outer surface of the casting after Vehicle Processing, thickness 0.65-1.05mm；
F, roast：The casting for having coated glaze slip is sent into tunnel oven roasting, china protective layer is formed after cooling, leaf is made Wheel, then impeller and water pump cover, shaft and cover board are subjected to the obtained final high-speed gear box cooling water pump of assembling.
The improvement of above-mentioned technical proposal is：High-speed gear box is with the mass percent of each component in cooling water pump：C： 0.02%, Al:1.17%,Zn:1.25%,Mn：0.38%, S：≤ 0.030%, P：≤ 0.030%, Cr：0.03%, Ni：0.89%, Cu： 0.26%, V：0.03%, Mo：0.07%, Ti：1.37%, B：0.01%, Pd：0.03%,Pt：0.34%,W：0.27%,Nd：0.15%, Ce：0.11%,Eu：0.08%,Lu:0.04%, Au：0.35%, Ag:0.88%, Ga：0.01%, Y：0.22%, Sn：1.36%, Zr： 0.03%, Re：0.02%, Bi：0.06%；
Magnesia：0.34%, cupric oxide：0.09%, iron oxide：0.15%, manganese dioxide：0.07%, Kocide SD： 0.06%, iron hydroxide：0.04%, surplus Fe.
The improvement of above-mentioned technical proposal is：High-speed gear box is with the mass percent of each component in cooling water pump：C： 0.03%, Al:1.77%,Zn:1.29%,Mn：0.48%, S：≤ 0.030%, P：≤ 0.030%, Cr：0.04%, Ni：1.14%, Cu： 0.26%, V：0.04%, Mo：0.08%, Ti：1.39%, B：0.02%, Pd：0.04%,Pt：0.49%,W：0.29%,Nd：0.15%, Ce：0.12%,Eu：0.09%,Lu:0.06%, Au：0.37%, Ag:0.96%, Ga：0.02%, Y：0.25%, Sn：1.38%, Zr： 0.04%, Re：0.02%, Bi：0.06%；
Magnesia：0.35%, cupric oxide：0.09%, iron oxide：0.16%, manganese dioxide：0.07%, Kocide SD： 0.06%, iron hydroxide：0.05%, surplus Fe.
It is of the invention to be using the beneficial effect of above-mentioned technical proposal：
1. the high-speed gear box cooling water pump of the present invention strengthens cooling water pump due to containing Zn, Ni and W in raw material Heat-resisting and corrosion resistance；
2. the high-speed gear box cooling water pump of the present invention alleviates cold due to containing Ti, Al and rare earth element in raw material But the quality of water pump, adds structural strength and corrosion resistance；
3. the high-speed gear box of the present invention due to having carried out secondary smelting in raw material melting, then passes through ball with cooling water pump Change reaction, the cooperation skimmed with slag hitting so that raw material melting is more thorough, can effectively remove the impurity in raw material, improves casting Part quality；
Due to using steam dewaxing in dewaxing, 4. the pressure of steam is the high-speed gear box cooling water pump of the present invention 0.8MPa, time are 25-45 minutes, and dewaxing is efficiently thorough；
5. the high-speed gear box cooling water pump of the present invention is due in pouring operation, with 400-420 degrees Celsius of constant temperature Air-heater shell mold is carried out baking 1 it is small when, effectively prevent in cast shell mold that cracking and broken occurs by the preheating to shell mold；
6. the present invention high-speed gear box with cooling water pump due to being machined to the casting after moulding by casting, to impeller Details position by Vehicle Processing accurate dimension, and cylinder iron Vehicle Processing water outlet pump case, shaft and cover board so that water pump it is each A accessory overall precision is high, convenient for assembly；
7. the high-speed gear box of the present invention, since the casting after Vehicle Processing being heat-treated, can control leaf with cooling water pump Face crack caused by the laterally and longitudinally depression of wheel, and impeller table surface layer can be made to produce the remnants opposite with working stress and answered Power, when stand under load, can offset part working stress, increase service life；
By double tempering when 8. the high-speed gear box cooling water pump of the present invention is due to heat treatment, tempering can for the first time Rotary austenite is formed on lath circle or lath beam circle, and is further enriched with alloying element in insulating process to improve stabilization Property；Ferrite lath beam is then replied in insulating process, while the harmful element in ferrite is also discharged to revolution Ovshinsky In body, so as to improve substrate performance；Second of tempering can make rotary austenite enrichment enough on the premise of proof strength More alloying elements, makes few net carbide, is more uniformly distributed tissue, can holding structure stablize, it is tired to further enhance contact Labor intensity and impact flexibility；
9. the high-speed gear box cooling water pump of the present invention by the casting after heat treatment due to covering china protective layer so that Impeller appearance forms one layer of china protective layer, further increases the heat-resisting and corrosion resistance of automobile engine to exhaust Taper Pipe, And cause impeller that there is structural strength height and good insulating.
Embodiment
Embodiment 1
The production technology of the high-speed gear box cooling water pump of the present embodiment, each component in high-speed gear box cooling water pump Mass percent be：C：0.02%, Al:1.17%,Zn:1.25%,Mn：0.38%, S：≤ 0.030%, P：≤ 0.030%, Cr： 0.03%, Ni：0.89%, Cu：0.26%, V：0.03%, Mo：0.07%, Ti：1.37%, B：0.01%, Pd：0.03%,Pt：0.34%, W：0.27%,Nd：0.15%,Ce：0.11%,Eu：0.08%,Lu:0.04%, Au：0.35%, Ag:0.88%, Ga：0.01%, Y： 0.22%, Sn：1.36%, Zr：0.03%, Re：0.02%, Bi：0.06%, magnesia：0.34%, cupric oxide：0.09%, iron oxide： 0.15%, manganese dioxide：0.07%, Kocide SD：0.06%, iron hydroxide：0.04%, surplus Fe；
The production technology of high-speed gear box cooling water pump comprises the following steps：
(i) melting raw material：
A, added raw materials into by predetermined high-speed gear box with the mass percent of each component in cooling water pump in smelting furnace, will Temperature in smelting furnace brings up to 1520 degrees Celsius to 1540 degrees Celsius, and raw material is smelted to form alloy solution；
B, alloy solution obtained in the previous step is cooled down, water cooling and air-cooled combination during cooling, first use water cooling with Alloy solution water cooling to 450-460 DEG C of formation alloy, is then air-cooled to 340-350 DEG C, then adopt by the cooldown rate of 15-18 DEG C/s With water cooling with the cooldown rate of 18-20 DEG C/s by alloy water cooling to room temperature；
C, heat, previous step alloy after cooling is subjected to secondary smelting in smelting furnace, the temperature in smelting furnace is brought up to 1580 degrees Celsius to 1610 degrees Celsius, alloy forms alloy solution by secondary smelting；
D, the alloy solution in smelting furnace is poured into electric furnace, sequentially adds nodulizer and inovulant in the bag hole of casting ladle, use Sheet metal is covered in nodulizer, on inovulant, and consolidates, and the thickness of sheet metal is 0.5mm to 1mm；
Alloy solution in electric furnace is poured into the opposite side of casting ladle indent, spheroidizing reacion 70s to 85s, spheroidizing reacion fills e, After point, one layer of collection slag agent is spread, is quickly skimmed；
F, it is quick skim after, be sprinkled into swelling perlite powder on alloy solution surface immediately, twice of slag hitting, after the completion of slag hitting, Alloy solution to be cast is formed, was poured in five minutes；
(ii) prepared by wax-pattern：Using mechanical casting, make consistent with the impeller size of high-speed gear box cooling water pump and wrap Wax-pattern containing insulated feeder, and wax-pattern is repaired, wax-pattern is cleaned using wax base cleaning agent afterwards；
(iii) shell mold sand mold is (ii) made on obtained wax-pattern in step；
(iv) dewax：Using steam dewaxing, the pressure of steam is 0.8MPa, and the time is 25-45 minutes, and shell mold is made；
(v) shell mold roasts；
(vi) by step, (v) roasting shell mold is put into the sandbox prepared by formative technology, and blend compounds band is sealed in the shell mold For the cast gate and insulated feeder of cast, the mixed sand by preparation is then placed in, foundry jolter is used again after piling mixed sand Ram-jolt is carried out, forms sand mold；
(vii) pour into a mould
Before cast with the air-heater of 400-420 degrees Celsius of constant temperature shell mold is carried out baking 1 it is small when, during cast, pouring temperature For 1550-1650 degrees Celsius, after cast, casting kept the temperature in sand mold 2-3 it is small when；After moulding by casting, demoulded, crush shell Mould, cuts off the insulated feeder of casting, obtains casting；
(viii) the casting after moulding by casting is machined, and cylinder iron Vehicle Processing water outlet pump case, shaft and cover board；
(ix) the casting after Vehicle Processing is heat-treated, concrete technology is：
A, heat：Casting is heated to 640-665 DEG C, and keeps the temperature 45-55min；
B, cool down：The air-cooled cooldown rate with 15-18 DEG C/s is used to accelerate casting after being cooled to 410-420 DEG C, then it is empty It is cooled to room temperature；
C, once it is tempered：After casting is heated to 560-575 DEG C of tempering 41-43min, treats warm 30-45s, make automobile variable speed Case gear temperature homogenizes, and is accelerated afterwards with the cooldown rate of 28-35 DEG C/s after being cooled to 355-365 DEG C, then be air-cooled to room temperature；
D, double tempering：Room temperature is air-cooled to after automobile gearbox gear is heated to 614-618 DEG C of tempering 53-59min；
E, the casting after double tempering is handled is put into well formula gas heating furnace, casting is carried out at Quench heating Reason, quenching and preserving heat temperature are 740 DEG C ± 10 DEG C, soaking time 1.2-1.5h；Water is quickly put into after the completion of casting Quench heating Groove water cooling 15-25 minutes, cooling bath water temperature are controlled at 25-50 DEG C；
(x) the casting after heat treatment is covered into china protective layer, concrete technology is：
A, dispensing：The mass percent component of each component is in china protective layer：Quartz:3.13-3.32%, feldspar: 3.53-3.45%, bone black：5.21-5.36%, talcum powder：4.11-4.23%, aluminium powder：3.15-3.33%, silica flour：3.46-3.58%、 Calcium oxide：1.23-1.35%, magnesia：2.41-2.56%, surplus are kaolin；
B, crush:Each raw material of china protective layer is added by mass percentage mixing and ball milling is carried out in ball mill, added Water forms glaze slip；
C, iron removaling is sieved：Above-mentioned glaze slip is filtered with the sieve of 150 mesh, iron remover iron removaling is used after filtering；
D, process is stirred in filter：Water unnecessary in glaze slip in previous step is filtered off, the moisture content of glaze slip is in 29-36% after filter
E, coat：The glaze slip modulated is coated in the outer surface of the casting after Vehicle Processing, thickness 0.65-1.05mm；
F, roast：The casting for having coated glaze slip is sent into tunnel oven roasting, china protective layer is formed after cooling, leaf is made Wheel, then impeller and water pump cover, shaft and cover board are subjected to the obtained final high-speed gear box cooling water pump of assembling.
Embodiment 2
The production technology of the high-speed gear box cooling water pump of the present embodiment, difference is high-speed gear box with cold But the mass percent of each component is in water pump：C：0.03%, Al:1.77%,Zn:1.29%,Mn：0.48%, S：≤ 0.030%, P： ≤ 0.030%, Cr：0.04%, Ni：1.14%, Cu：0.26%, V：0.04%, Mo：0.08%, Ti：1.39%, B：0.02%, Pd： 0.04%,Pt：0.49%,W：0.29%,Nd：0.15%,Ce：0.12%,Eu：0.09%,Lu:0.06%, Au：0.37%, Ag:0.96%, Ga：0.02%, Y：0.25%, Sn：1.38%, Zr：0.04%, Re：0.02%, Bi：0.06%,
Magnesia：0.35%, cupric oxide：0.09%, iron oxide：0.16%, manganese dioxide：0.07%, Kocide SD： 0.06%, iron hydroxide：0.05%, surplus Fe；
The production technology of high-speed gear box cooling water pump comprises the following steps：
(i) melting raw material：
A, added raw materials into by predetermined high-speed gear box with the mass percent of each component in cooling water pump in smelting furnace, will Temperature in smelting furnace brings up to 1520 degrees Celsius to 1540 degrees Celsius, and raw material is smelted to form alloy solution；
B, alloy solution obtained in the previous step is cooled down, water cooling and air-cooled combination during cooling, first use water cooling with Alloy solution water cooling to 450-460 DEG C of formation alloy, is then air-cooled to 340-350 DEG C, then adopt by the cooldown rate of 15-18 DEG C/s With water cooling with the cooldown rate of 18-20 DEG C/s by alloy water cooling to room temperature；
C, heat, previous step alloy after cooling is subjected to secondary smelting in smelting furnace, the temperature in smelting furnace is brought up to 1580 degrees Celsius to 1610 degrees Celsius, alloy forms alloy solution by secondary smelting；
D, the alloy solution in smelting furnace is poured into electric furnace, sequentially adds nodulizer and inovulant in the bag hole of casting ladle, use Sheet metal is covered in nodulizer, on inovulant, and consolidates, and the thickness of sheet metal is 0.5mm to 1mm；
Alloy solution in electric furnace is poured into the opposite side of casting ladle indent, spheroidizing reacion 70s to 85s, spheroidizing reacion fills e, After point, one layer of collection slag agent is spread, is quickly skimmed；
F, it is quick skim after, be sprinkled into swelling perlite powder on alloy solution surface immediately, twice of slag hitting, after the completion of slag hitting, Alloy solution to be cast is formed, was poured in five minutes；
(ii) prepared by wax-pattern：Using mechanical casting, make consistent with the impeller size of high-speed gear box cooling water pump and wrap Wax-pattern containing insulated feeder, and wax-pattern is repaired, wax-pattern is cleaned using wax base cleaning agent afterwards；
(iii) shell mold sand mold is (ii) made on obtained wax-pattern in step；
(iv) dewax：Using steam dewaxing, the pressure of steam is 0.8MPa, and the time is 25-45 minutes, and shell mold is made；
(v) shell mold roasts；
(vi) by step, (v) roasting shell mold is put into the sandbox prepared by formative technology, and blend compounds band is sealed in the shell mold For the cast gate and insulated feeder of cast, the mixed sand by preparation is then placed in, foundry jolter is used again after piling mixed sand Ram-jolt is carried out, forms sand mold；
(vii) pour into a mould
Before cast with the air-heater of 400-420 degrees Celsius of constant temperature shell mold is carried out baking 1 it is small when, during cast, pouring temperature For 1550-1650 degrees Celsius, after cast, casting kept the temperature in sand mold 2-3 it is small when；After moulding by casting, demoulded, crush shell Mould, cuts off the insulated feeder of casting, obtains casting；
(viii) the casting after moulding by casting is machined, and cylinder iron Vehicle Processing water outlet pump case, shaft and cover board；
(ix) the casting after Vehicle Processing is heat-treated, concrete technology is：
A, heat：Casting is heated to 640-665 DEG C, and keeps the temperature 45-55min；
B, cool down：The air-cooled cooldown rate with 15-18 DEG C/s is used to accelerate casting after being cooled to 410-420 DEG C, then it is empty It is cooled to room temperature；
C, once it is tempered：After casting is heated to 560-575 DEG C of tempering 41-43min, treats warm 30-45s, make automobile variable speed Case gear temperature homogenizes, and is accelerated afterwards with the cooldown rate of 28-35 DEG C/s after being cooled to 355-365 DEG C, then be air-cooled to room temperature；
D, double tempering：Room temperature is air-cooled to after automobile gearbox gear is heated to 614-618 DEG C of tempering 53-59min；
E, the casting after double tempering is handled is put into well formula gas heating furnace, casting is carried out at Quench heating Reason, quenching and preserving heat temperature are 740 DEG C ± 10 DEG C, soaking time 1.2-1.5h；Water is quickly put into after the completion of casting Quench heating Groove water cooling 15-25 minutes, cooling bath water temperature are controlled at 25-50 DEG C；
(x) the casting after heat treatment is covered into china protective layer, concrete technology is：
A, dispensing：The mass percent component of each component is in china protective layer：Quartz:3.13-3.32%, feldspar: 3.53-3.45%, bone black：5.21-5.36%, talcum powder：4.11-4.23%, aluminium powder：3.15-3.33%, silica flour：3.46-3.58%、 Calcium oxide：1.23-1.35%, magnesia：2.41-2.56%, surplus are kaolin；
B, crush:Each raw material of china protective layer is added by mass percentage mixing and ball milling is carried out in ball mill, added Water forms glaze slip；
C, iron removaling is sieved：Above-mentioned glaze slip is filtered with the sieve of 150 mesh, iron remover iron removaling is used after filtering；
D, process is stirred in filter：Water unnecessary in glaze slip in previous step is filtered off, the moisture content of glaze slip is in 29-36% after filter
E, coat：The glaze slip modulated is coated in the outer surface of the casting after Vehicle Processing, thickness 0.65-1.05mm；
F, roast：The casting for having coated glaze slip is sent into tunnel oven roasting, china protective layer is formed after cooling, leaf is made Wheel, then impeller and water pump cover, shaft and cover board are subjected to the obtained final high-speed gear box cooling water pump of assembling.
The present invention is not limited to above-described embodiment.All technical solutions formed using equivalent substitution, all falling within the present invention will The protection domain asked.

Claims (3)

  1. A kind of 1. production technology of high-speed gear box cooling water pump, it is characterised in that：The high-speed gear box cooling water pump Raw material in the mass percent of each component be：C：0.02-0.03%, Al:1.16-1.83%,Zn:1.22-1.39%,Mn： 0.37-0.58%, S：≤ 0.030%, P：≤ 0.030%, Cr：0.02-0.04%, Ni：0.84-1.19%, Cu：0.25-0.29%, V： 0.02-0.05%, Mo：0.06-0.09%, Ti：1.33-1.59%, B：0.01-0.02%, Pd：0.02-0.04%,Pt：0.33- 0.49%,
    W：0.23-0.36%,Nd：0.13-0.16%,Ce：0.11-0.12%,Eu：0.07-0.15%,Lu:0.03-0.07%, Au： 0.33-0.42%, Ag:0.86-1.04%, Ga：0.01-0.02%, Y：0.21-0.27%, Sn：1.34-1.58%, Zr：0.02- 0.07%, Re：0.01-0.03%, Bi：0.05-0.09%, magnesia：0.33-0.37%, cupric oxide：0.08-0.13%, oxidation Iron：0.12-0.18%, manganese dioxide：0.06-0.09%, Kocide SD：0.05-0.08%, iron hydroxide：0.03- 0.05%, surplus Fe；
    The production technology of the high-speed gear box cooling water pump comprises the following steps：
    (i) melting raw material：
    A, added raw materials into by predetermined high-speed gear box with the mass percent of each component in cooling water pump in smelting furnace, by smelting furnace Interior temperature brings up to 1520 degrees Celsius to 1540 degrees Celsius, and raw material is smelted to form alloy solution；
    B, alloy solution obtained in the previous step is cooled down, water cooling and air-cooled combination, first use water cooling with 15-18 during cooling DEG C/cooldown rate of s by alloy solution water cooling to 450-460 DEG C of formation alloy, be then air-cooled to 340-350 DEG C, then using water The cold cooldown rate with 18-20 DEG C/s is by alloy water cooling to room temperature；
    C, heat, previous step alloy after cooling is subjected to secondary smelting in smelting furnace, the temperature in smelting furnace is brought up to 1580 Degree Celsius to 1610 degrees Celsius, alloy forms alloy solution by secondary smelting；
    D, the alloy solution in smelting furnace is poured into electric furnace, nodulizer and inovulant is sequentially added in the bag hole of casting ladle, with thin steel Plate is covered in nodulizer, on inovulant, and consolidates, and the thickness of sheet metal is 0.5mm to 1mm；
    Alloy solution in electric furnace pours into the opposite side of casting ladle indent e, spheroidizing reacion 70s to 85s, after spheroidizing reacion is abundant, One layer of collection slag agent is spread, is quickly skimmed；
    F, after quickly skimming, swelling perlite powder is sprinkled on alloy solution surface immediately, twice of slag hitting, after the completion of slag hitting, forms Alloy solution to be cast, was poured in five minutes；
    (ii) prepared by wax-pattern：Using mechanical casting, make consistent with the impeller size of high-speed gear box cooling water pump and include The wax-pattern of insulated feeder, and wax-pattern is repaired, wax-pattern is cleaned using wax base cleaning agent afterwards；
    (iii) shell mold sand mold is (ii) made on obtained wax-pattern in step；
    (iv) dewax：Using steam dewaxing, the pressure of steam is 0.8MPa, and the time is 25-45 minutes, and shell mold is made；
    (v) shell mold roasts；
    (vi) by step, (v) roasting shell mold is put into the sandbox prepared by formative technology, and blend compounds band seals to be used in the shell mold The cast gate and insulated feeder of cast, are then placed in the mixed sand by preparation, are carried out again with foundry jolter after piling mixed sand Ram-jolt, forms sand mold；
    (vii) pour into a mould
    Before cast with the air-heater of 400-420 degrees Celsius of constant temperature shell mold is carried out baking 1 it is small when, during cast, pouring temperature is 1550-1650 degrees Celsius, after cast, casting kept the temperature in sand mold 2-3 it is small when；After moulding by casting, demoulded, crush shell mold, The insulated feeder of casting is cut off, obtains casting；
    (viii) the casting after moulding by casting is machined, and cylinder iron Vehicle Processing water outlet pump case, shaft and cover board；
    (ix) the casting after Vehicle Processing is heat-treated, concrete technology is：
    A, heat：Casting is heated to 640-665 DEG C, and keeps the temperature 45-55min；
    B, cool down：Use the air-cooled cooldown rate with 15-18 DEG C/s to accelerate casting after being cooled to 410-420 DEG C, then be air-cooled to Room temperature；
    C, once it is tempered：After casting is heated to 560-575 DEG C of tempering 41-43min, treats warm 30-45s, make automobile gearbox tooth Equalizing temperature is taken turns, is accelerated afterwards with the cooldown rate of 28-35 DEG C/s after being cooled to 355-365 DEG C, then be air-cooled to room temperature；
    D, double tempering：Room temperature is air-cooled to after automobile gearbox gear is heated to 614-618 DEG C of tempering 53-59min；
    E, the casting after double tempering is handled is put into well formula gas heating furnace, Quench heating processing is carried out to casting, Quenching and preserving heat temperature is 740 DEG C ± 10 DEG C, soaking time 1.2-1.5h；Tank water is quickly put into after the completion of casting Quench heating 15-25 minutes cold, cooling bath water temperature is controlled at 25-50 DEG C；
    (x) the casting after heat treatment is covered into china protective layer, concrete technology is：
    A, dispensing：The mass percent component of each component is in china protective layer raw material：Quartz:3.13-3.32%, feldspar: 3.53-3.45%, bone black：5.21-5.36%, talcum powder：4.11-4.23%, aluminium powder：3.15-3.33%, silica flour：3.46-3.58%、 Calcium oxide：1.23-1.35%, magnesia：2.41-2.56%, surplus are kaolin；
    B, crush:Each raw material of china protective layer is added by mass percentage mixing and ball milling is carried out in ball mill, add water shape Into glaze slip；
    C, iron removaling is sieved：Above-mentioned glaze slip is filtered with the sieve of 150 mesh, iron remover iron removaling is used after filtering；
    D, process is stirred in filter：Water unnecessary in glaze slip in previous step is filtered off, the moisture content of glaze slip is in 29-36% after filter
    E, coat：The glaze slip modulated is coated in the outer surface of the casting after Vehicle Processing, thickness 0.65-1.05mm；
    F, roast：The casting for having coated glaze slip is sent into tunnel oven roasting, china protective layer is formed after cooling, impeller is made, then Impeller and water pump cover, shaft and cover board are subjected to the obtained final high-speed gear box cooling water pump of assembling.
  2. 2. the production technology of high-speed gear box cooling water pump according to claim 1, it is characterised in that：The high speed tooth Roller box is with the mass percent of each component in cooling water pump raw material：C：0.02%, Al:1.17%,Zn:1.25%,Mn：0.38%, S：≤ 0.030%, P：≤ 0.030%, Cr：0.03%, Ni：0.89%, Cu：0.26%, V：0.03%, Mo：0.07%, Ti：1.37%, B： 0.01%, Pd：0.03%,Pt：0.34%,W：0.27%,Nd：0.15%,Ce：0.11%,Eu：0.08%,Lu:0.04%, Au：0.35%, Ag:0.88%, Ga：0.01%, Y：0.22%, Sn：1.36%, Zr：0.03%, Re：0.02%, Bi：0.06%,
    Magnesia：0.34%, cupric oxide：0.09%, iron oxide：0.15%, manganese dioxide：0.07%, Kocide SD： 0.06%, iron hydroxide：0.04%, surplus Fe.
  3. 3. the production technology of high-speed gear box cooling water pump according to claim 1, it is characterised in that：The high speed tooth Roller box is with the mass percent of each component in cooling water pump raw material：C：0.03%, Al:1.77%,Zn:1.29%,Mn：0.48%, S：≤ 0.030%, P：≤ 0.030%, Cr：0.04%, Ni：1.14%, Cu：0.26%, V：0.04%, Mo：0.08%, Ti：1.39%, B： 0.02%, Pd：0.04%,Pt：0.49%,W：0.29%,Nd：0.15%,Ce：0.12%,Eu：0.09%,Lu:0.06%, Au：0.37%, Ag:0.96%, Ga：0.02%, Y：0.25%, Sn：1.38%, Zr：0.04%, Re：0.02%, Bi：0.06%,
    Magnesia：0.35%, cupric oxide：0.09%, iron oxide：0.16%, manganese dioxide：0.07%, Kocide SD： 0.06%, iron hydroxide：0.05%, surplus Fe.
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