CN104763512A - Cooling jacket for oil sprayer of marine engine - Google Patents
Cooling jacket for oil sprayer of marine engine Download PDFInfo
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- CN104763512A CN104763512A CN201510060600.1A CN201510060600A CN104763512A CN 104763512 A CN104763512 A CN 104763512A CN 201510060600 A CN201510060600 A CN 201510060600A CN 104763512 A CN104763512 A CN 104763512A
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- Prior art keywords
- hole section
- oil sprayer
- cavity
- marine engine
- coolant jacket
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
- F02M53/04—Injectors with heating, cooling, or thermally-insulating means
- F02M53/043—Injectors with heating, cooling, or thermally-insulating means with cooling means other than air cooling
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/28—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in one step
- C23C8/30—Carbo-nitriding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a cooling jacket for an oil sprayer of a marine engine. The cooling jacket comprises a jacket body, wherein a cooling hole is axially formed in the jacket body; the cooling hole is divided into a first hole section, a second hole section and a third hole section, a supercharging platform is formed between the first hole section and the second hole section, a supercharging slope is formed between the second hole section and the third hole section and a decompression cavity is formed between the inside walls of the second hole section and the third hole section and the outer surface of the jacket body; the jacket body comprises the main ingredients (wt.%): 13-18% of magnesium, 7-20% of titanium, 3-7% of cobalt, 15-20% of nickel, 1-3% of vanadium, 5-10% of silicon, 1-3% of molybdenum, 0.5-1% of tungsten, 5-10% of ferric, 3-5% of reinforced fibers, and the allowance of chromium and other unavoidable impurities. The cooling jacket provided by the invention is good in stability and long in service life, and is unlikely to be affected by the sudden change of the external environment.
Description
Technical field
The invention belongs to coolant jacket technical field, relate to a kind of marine engine oil sprayer coolant jacket.
Background technique
Oil sprayer is the accurate device that a kind of machining accuracy is very high, requires that its dynamic flow range is large, anti-clogging and contamination resistance is strong and atomization is good.Oil sprayer accepts the fuel injection pulse signal that ECU sends here, accurate control fuel injection amount, because oil sprayer can produce larger heat in the course of the work, if carry out temperature control not in time, higher temperature can produce considerable influence to the working life of oil sprayer, therefore, the cooling jacket for controlling its temperature is usually installed in oil sprayer.
Such as, Authorization Notice No. is that the patent of invention of CN 201401240Y discloses a kind of cylinder head with fuel injector cooling water mantle cavity and high temperature resistant lining, comprise cylinder head cap body, cylinder head lid is established oil sprayer attachment hole, the bottom of oil sprayer attachment hole is provided with high temperature resistant lining, the oil sprayer attachment hole hole wall at high temperature resistant lining place offers bosh, cooling water mantle cavity is formed between bosh and high temperature resistant liner outer wall, although this cooling jacket can reach basic cooling effect, but simultaneously, also there is following technical problem, due to the connection that cooling jacket and other component are all sealed types, and the inner chamber of cooling jacket is all segmented, its internal diameter is reduced to the other end successively by one end, therefore, when cooling liquid is flowed to one end that internal diameter is less by one end that internal diameter is larger, due to pressure jump, in a sealed meter environment, the two ends of cooling jacket then can be made to pop or cause cooling jacket to burst, greatly affect the working life of cooling jacket.
In sum, in order to solve the technical problem that above-mentioned cooling jacket exists, need to design a kind of not easily explosion and working life longer oil sprayer coolant jacket.
Summary of the invention
The object of the invention is the problems referred to above existed for prior art, propose a kind of not easily explosion and working life longer oil sprayer coolant jacket.
Object of the present invention realizes by following technical proposal: a kind of marine engine oil sprayer coolant jacket, comprise body, described body axially offers Cooling Holes, described Cooling Holes is divided into the first hole section, second hole section and the 3rd hole section, described first hole section internal diameter is greater than the second hole section internal diameter, described second hole section internal diameter is greater than the 3rd hole section internal diameter, supercharging platform is formed between described first hole section and the second hole section, supercharging inclined-plane is formed between described second hole Duan Yu tri-hole section, offer and relief chamber between the madial wall of described second hole section and the 3rd hole section and cover external surface, described relief chamber be divided into the first cavity and the second cavity and with the inclination cavity being connected the first cavity and the second cavity, described first cavity is corresponding with the second hole section, described second cavity is corresponding with the 3rd hole section, described inclination cavity is corresponding with supercharging inclined-plane, the main component of described body is (wt.%): magnesium 13-18%, titanium 7-20%, cobalt 3-7%, nickel 15-20%, vanadium 1-3%, silicon 5-10%, molybdenum 1-3%, tungsten 0.5-1%, iron 5-10%, reinforcing fiber 3-5%, surplus is chromium and other inevitable impurity, wherein reinforcing fiber is silicon carbide whisker and carbon fiber short fiber mixture, and carbon fiber short fiber Mean length is 100-200 micron.By the reinforcing fiber adopted, reinforcement is carried out to body, greatly reinforcing material toughness and tensile strength, utilize the carbonization between carbon fiber with metallic element to be combined simultaneously, effectively can improve the binding ability between carbon fiber and metal, thus from the toughness of the effective reinforcing material of metal structure, high-temperature behavior and wear resistance, and utilize the high-strength and resistant to elevated temperatures characteristic of silicon carbide whisker, can the effectively toughness of reinforcing material and wear resistance, silicon carbide whisker and carbon fiber short fiber comprise intergranular crack in tissue simultaneously, the defect sturcture such as slag inclusion and bubble is connected in series, thus effectively reduce defect sturcture to the impact of material property.
In above-mentioned a kind of marine engine oil sprayer coolant jacket, in described reinforcing fiber, the mass ratio of silicon carbide whisker and carbon fiber short fiber is (2-3): 1.Here by the adding quantity of restriction carbon fiber, effectively can avoid causing because carbon fiber adding quantity is excessive metal structure carbonization in material excessive, and cause much higher hard and affect the toughness of material.
In above-mentioned a kind of marine engine oil sprayer coolant jacket, described body at least its inner wall surface through following case-carbonizing nitriding treatment: at body pretreating surface, (covering protection is carried out on the surface namely without the need to carrying out case-carbonizing nitriding treatment, thus retain comprise the region of internal surface) carry out pretreatment after, body is placed in oven, pour nitrogen into again after oven is vacuumized and keep flow of nitrogen gas 3-5h, nitrogen replacing velocity is that 1% of nitrogen total amount in exchange oven per minute (exchanges flowing by keeping nitrogen in nitrogen atmosphere, be conducive to fully removing the foreign gas in stove in advance, thus fundamentally to reduce in nitrocarburizing processing procedure hetero atom to the erosion of materials microstructure, thus effectively ensure that the quality of body), be heated to 800-1000 degree Celsius again, (oligomeric polyethylene polymerization degree is 3-10 for importing ammonia and oligomeric polyethylene mixed gas, the polyethylene adopting low polymerization degree is that carburizing medium can utilize its carbon-chain structure effectively to control and improve uniformity and the carburizing depth of carburizing), keep pressure 80-100kpa, wherein ammonia dividing potential drop remains 1-2kpa, oligomeric polyethylene mixed gas dividing potential drop remains 3-5kpa, carry out nitrocarburizing process, processing time is 30-50min, then be cooled to quenching temperature, carry out cool air pulsed quenching and remove protective layer (the ceramic clay layer fragmentation after can also sintering being made by cool air pulsed quenching except eliminating stress enter remove, convenient and the user cost of cleaning very cheap).
In above-mentioned a kind of marine engine oil sprayer coolant jacket, described pretreatment is the ceramic clay layer applying one deck 3-5mm thickness at body pretreating surface, then normal temperature air-dry after.By to needing the surperficial coated ceramic clay layer protected, in processing procedure, along with the rising of temperature, one deck dense protective layer can be formed gradually, prevents pretreating surface by nitrocarburizing, ensure its toughness.
In above-mentioned a kind of marine engine oil sprayer coolant jacket, described cover external surface evenly offers multiple vent communicated with relief chamber.
In above-mentioned a kind of marine engine oil sprayer coolant jacket, one end of described body caves inward and is formed with cutting graftage part, be formed between described cutting graftage part and cover external surface and have annular radial platform, the angle of described cutting graftage part outer surface and annular radial platform is provided with fixing slot, and the minimum outer diameter of described fixing slot is less than the external diameter of described cutting graftage part.
In above-mentioned a kind of marine engine oil sprayer coolant jacket, the other end radial convex of described body is provided with external diameter and is greater than the joint overlapping body diameter, and the outer surface of described joint offers connecting groove.
Compared with prior art, the present invention has following beneficial effect and is:
This coolant jacket offers the relief chamber being positioned at the second hole section and the 3rd section periphery, hole in body, relief chamber is corresponding with the 3rd hole section to the second hole section, its internal diameter is reduced to the 3rd hole Duan Chu by the second hole section, when the cooling liquid in body flows to the second hole section gradually by the first hole section, during the 3rd hole section and make the second hole Duan Yu tri-hole section pressure increase time, due to the existence of relief chamber, the hole wall of the pressure extrusion second hole Duan Yu tri-hole section that the second hole Duan Yu tri-hole section increases, and make relief chamber produce certain deformation, the pressure of the urgency increasing that the second section place, hole Duan Yu tri-hole produces because aperture reduces is discharged with this, pressure in whole Cooling Holes is tended to balance, effectively avoid the pressure in Cooling Holes in anxious increasing situation, cause body burst or cause the joint of body and other component to pop, make coolant jacket work more stable, longer service life.
Accompanying drawing explanation
Fig. 1 is the perspective view of a preferred embodiment of the present invention.
Fig. 2 is the facade view of a preferred embodiment of the present invention.
In figure, 100, body; 110, Cooling Holes; 111, the first hole section; 112, the second hole section; 113, the 3rd hole section; 114, supercharging platform; 115, supercharging inclined-plane; 120, relief chamber; 121, the first cavity; 122, the second cavity; 123, inclination cavity; 130, vent; 140, cutting graftage part; 141, annular radial platform; 142, fixing slot; 150, joint; 151, connecting groove.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figure 1, a kind of marine engine oil sprayer coolant jacket, comprises body 100, and described body 100 axially offers Cooling Holes 110.
Further, described Cooling Holes 110 is divided into the first hole section 111, second hole section 112 and the 3rd hole section 113, described first hole section 111 internal diameter is greater than the second hole section 112 internal diameter, described second hole section 112 internal diameter is greater than the 3rd hole section 113 internal diameter, be formed with supercharging platform 114 between described first hole section 111 and the second hole section 112, between described second hole section 112 and the 3rd hole section 113, be formed with supercharging inclined-plane 115.
Offer and relief chamber 120 between the madial wall and body 100 outer surface of described second hole section 112 and the 3rd hole section 113, described relief chamber 120 be divided into the first cavity 121 and the second cavity 122 and with the inclination cavity 123 being connected the first cavity 121 and the second cavity 122, described first cavity 121 is corresponding with the second hole section 112, described second cavity 122 is corresponding with the 3rd hole section 113, and described inclination cavity 123 is corresponding with supercharging inclined-plane 115.
This coolant jacket adopts said structure, the relief chamber 120 being positioned at the second hole section 112 and the 3rd hole section 113 periphery is offered in body 100, relief chamber 120 is corresponding with the 3rd hole section 113 to the second hole section 112, its internal diameter is reduced to the 3rd hole section 113 place by the second hole section 112, when the cooling liquid in body 100 flows to the second hole section 112 gradually by the first hole section 111, during the 3rd hole section 113 and when the pressure of the second hole section 112 and the 3rd hole section 113 is increased, due to the existence of relief chamber 120, the hole wall of the pressure extrusion second hole section 112 that the second hole section 112 and the 3rd hole section 113 increase and the 3rd hole section 113, and make relief chamber 120 produce certain deformation, the pressure that urgency that the second hole section 112 and the 3rd hole section 113 place produce because aperture reduces increases is discharged with this, pressure in whole Cooling Holes 110 is tended to balance, effectively avoid the pressure in Cooling Holes 110 to cause body 100 to burst in anxious increasing situation or cause body 100 to pop with the joint of other component, make coolant jacket work more stable, longer service life.
Further, described body 100 outer surface evenly offers multiple vent 130 communicated with relief chamber 120.
Relief chamber 120 is after the extruding being subject to the second hole section 112 and the 3rd hole section 113, pressure in its chamber also can increase, and space in relief chamber 120 is effective, relief chamber 120 is after pressurized, its internal pressure also needs to be discharged, otherwise, relief chamber 120 cannot bear the more pressure that the second hole section 112 and the 3rd hole section 113 are brought when pressurized, Cooling Holes 110 internal pressure can be caused equally excessive and cause cover to inscribe explosion, and after vent 130 is set, relief chamber 120 is after pressurized, cavity pressure is outwards discharged by vent 130, therefore, no matter the second hole section 112 and the 3rd hole section 113 give relief chamber 120 great pressure, can be discharged by vent 130, further ensure the safety of body 100.
Further, one end of described body 100 caves inward and is formed with cutting graftage part 140, be formed between described cutting graftage part 140 and body 100 outer surface and have annular radial platform 141, the angle of described cutting graftage part 140 outer surface and annular radial platform 141 is provided with fixing slot 142, and the minimum outer diameter of described fixing slot 142 is less than the external diameter of described cutting graftage part 140.
This cutting graftage part 140 can be inserted in the corresponding jack of oil sprayer, insert after in jack, this annular radial platform 141 is fitted with the end face of oil sprayer, prevent body 100 from rocking, add body 100 be connected with oil sprayer after steadiness, minimum diameter due to fixing slot 142 is less than the external diameter of cutting graftage part 140, when cutting graftage part 140 is inserted after in jack, corresponding site in jack is stuck in this fixing slot 142, make the stationarity of body 100 better, prevent Cooling Holes 110 to be separated with oil sprayer standing larger pressure body 100, cause the omission of cooling liquid.
Further, the other end radial convex of described body 100 is provided with the joint 150 that external diameter is greater than body 100 external diameter, and the outer surface of described joint 150 offers connecting groove 151.
By this connecting groove 151, body 100 can be connected with other component, and the external diameter of joint 150 is greater than the external diameter of body 100, then effectively add the intensity of this joint 150, the various factors preventing it from producing because of connection makes this joint 150 damage, and extends the working life of whole body 100.
Be below the embodiment of body of the present invention
Embodiment 1
In the present embodiment, the main component of body is (wt.%): magnesium 13%, titanium 20%, cobalt 3%, nickel 15%, vanadium 1%, silicon 5%, molybdenum 1%, tungsten 0.5%, iron 5%, silicon carbide whisker 2% and carbon fiber short fiber 1%, surplus is chromium and other inevitable impurity, and carbon fiber short fiber Mean length is 100 microns.
The ceramic clay layer of one deck 3m thickness is applied at body pretreating surface, again after normal temperature is air-dry, body is placed in oven, pour nitrogen into again after oven is vacuumized and keep flow of nitrogen gas 3h, nitrogen replacing velocity is 1% of nitrogen total amount in exchange oven per minute, be heated to 800 degrees Celsius again, import ammonia and oligomeric polyethylene mixed gas, keep pressure 80-100kpa, wherein ammonia dividing potential drop remains 1-2kpa, oligomeric polyethylene mixed gas dividing potential drop remains 3-5kpa, carry out nitrocarburizing process, processing time is 30min, then be cooled to quenching temperature, carry out cool air pulsed quenching and remove protective layer.
The present embodiment body samples 100, and circulate after 10000 times with 2.5MPa high-voltage pulse Fluid Dynamics compression shock, underbead crack quantity 2 appears in carrying out flaw detection, breaks 1.
Embodiment 2
In the present embodiment, the main component of body is (wt.%): magnesium 18%, titanium 12%, cobalt 7%, nickel 16%, vanadium 2%, silicon 10%, molybdenum 2%, tungsten 1%, iron 7%, silicon carbide whisker 3% and carbon fiber short fiber 1%, surplus is chromium and other inevitable impurity, and carbon fiber short fiber Mean length is 120 microns.
The ceramic clay layer of one deck 4m thickness is applied at body pretreating surface, again after normal temperature is air-dry, body is placed in oven, pour nitrogen into again after oven is vacuumized and keep flow of nitrogen gas 4h, nitrogen replacing velocity is 1% of nitrogen total amount in exchange oven per minute, be heated to 840 degrees Celsius again, import ammonia and oligomeric polyethylene mixed gas, keep pressure 80-100kpa, wherein ammonia dividing potential drop remains 1-2kpa, oligomeric polyethylene mixed gas dividing potential drop remains 3-5kpa, carry out nitrocarburizing process, processing time is 40min, then be cooled to quenching temperature, carry out cool air pulsed quenching and remove protective layer.
The present embodiment body samples 100, and circulate after 10000 times with 2.5MPa high-voltage pulse Fluid Dynamics compression shock, underbead crack quantity 1 appears in carrying out flaw detection, breaks 1.
Embodiment 3
In the present embodiment, the main component of body is (wt.%): magnesium 15%, titanium 7%, cobalt 6%, nickel 18%, vanadium 3%, silicon 8%, molybdenum 3%, tungsten 0.7%, iron 9%, silicon carbide whisker 3.7% and carbon fiber short fiber 1.3%, surplus is chromium and other inevitable impurity, and carbon fiber short fiber Mean length is 140 microns.
The ceramic clay layer of one deck 5m thickness is applied at body pretreating surface, again after normal temperature is air-dry, body is placed in oven, pour nitrogen into again after oven is vacuumized and keep flow of nitrogen gas 4h, nitrogen replacing velocity is 1% of nitrogen total amount in exchange oven per minute, be heated to 960 degrees Celsius again, import ammonia and oligomeric polyethylene mixed gas, keep pressure 80-100kpa, wherein ammonia dividing potential drop remains 1-2kpa, oligomeric polyethylene mixed gas dividing potential drop remains 3-5kpa, carry out nitrocarburizing process, processing time is 50min, then be cooled to quenching temperature, carry out cool air pulsed quenching and remove protective layer.
The present embodiment body samples 100, and circulate after 10000 times with 2.5MPa high-voltage pulse Fluid Dynamics compression shock, underbead crack quantity 2 appears in carrying out flaw detection, breaks 0.
Embodiment 4
In the present embodiment, the main component of body is (wt.%): magnesium 17%, titanium 15%, cobalt 4%, nickel 17%, vanadium 1%, silicon 9%, molybdenum 1%, tungsten 0.6%, iron 10%, silicon carbide whisker 2.2% and carbon fiber short fiber 0.8%, surplus is chromium and other inevitable impurity, and carbon fiber short fiber Mean length is 160 microns.
The ceramic clay layer of one deck 5m thickness is applied at body pretreating surface, again after normal temperature is air-dry, body is placed in oven, pour nitrogen into again after oven is vacuumized and keep flow of nitrogen gas 4h, nitrogen replacing velocity is 1% of nitrogen total amount in exchange oven per minute, be heated to 920 degrees Celsius again, import ammonia and oligomeric polyethylene mixed gas, keep pressure 80-100kpa, wherein ammonia dividing potential drop remains 1-2kpa, oligomeric polyethylene mixed gas dividing potential drop remains 3-5kpa, carry out nitrocarburizing process, processing time is 30min, then be cooled to quenching temperature, carry out cool air pulsed quenching and remove protective layer.
The present embodiment body samples 100, and circulate after 10000 times with 2.5MPa high-voltage pulse Fluid Dynamics compression shock, underbead crack quantity 3 appears in carrying out flaw detection, breaks 0.
Embodiment 5
In the present embodiment, the main component of body is (wt.%): magnesium 14%, titanium 18%, cobalt 5%, nickel 20%, vanadium 2%, silicon 7%, molybdenum 2%, tungsten 0.8%, iron 8%, silicon carbide whisker 2.7% and carbon fiber short fiber 1.3%, surplus is chromium and other inevitable impurity, and carbon fiber short fiber Mean length is 180 microns.
The ceramic clay layer of one deck 4m thickness is applied at body pretreating surface, again after normal temperature is air-dry, body is placed in oven, pour nitrogen into again after oven is vacuumized and keep flow of nitrogen gas 3h, nitrogen replacing velocity is 1% of nitrogen total amount in exchange oven per minute, be heated to 880 degrees Celsius again, import ammonia and oligomeric polyethylene mixed gas, keep pressure 80-100kpa, wherein ammonia dividing potential drop remains 1-2kpa, oligomeric polyethylene mixed gas dividing potential drop remains 3-5kpa, carry out nitrocarburizing process, processing time is 40min, then be cooled to quenching temperature, carry out cool air pulsed quenching and remove protective layer.
The present embodiment body samples 100, and circulate after 10000 times with 2.5MPa high-voltage pulse Fluid Dynamics compression shock, underbead crack quantity 1 appears in carrying out flaw detection, breaks 1.
Embodiment 6
In the present embodiment, the main component of body is (wt.%): magnesium 16%, titanium 10%, cobalt 3.5%, nickel 19%, vanadium 3%, silicon 6%, molybdenum 3%, tungsten 0.9%, iron 6%, silicon carbide whisker 3.5% and carbon fiber short fiber 1.5%, surplus is chromium and other inevitable impurity, and carbon fiber short fiber Mean length is 200 microns.
The ceramic clay layer of one deck 5m thickness is applied at body pretreating surface, again after normal temperature is air-dry, body is placed in oven, pour nitrogen into again after oven is vacuumized and keep flow of nitrogen gas 5h, nitrogen replacing velocity is 1% of nitrogen total amount in exchange oven per minute, be heated to 1000 degrees Celsius again, import ammonia and oligomeric polyethylene mixed gas, keep pressure 80-100kpa, wherein ammonia dividing potential drop remains 1-2kpa, oligomeric polyethylene mixed gas dividing potential drop remains 3-5kpa, carry out nitrocarburizing process, processing time is 50min, then be cooled to quenching temperature, carry out cool air pulsed quenching and remove protective layer.
The present embodiment body samples 100, and circulate after 10000 times with 2.5MPa high-voltage pulse Fluid Dynamics compression shock, underbead crack quantity 3 appears in carrying out flaw detection, breaks 1.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (7)
1. a marine engine oil sprayer coolant jacket, it is characterized in that, comprise body, described body axially offers Cooling Holes, described Cooling Holes is divided into the first hole section, second hole section and the 3rd hole section, described first hole section internal diameter is greater than the second hole section internal diameter, described second hole section internal diameter is greater than the 3rd hole section internal diameter, supercharging platform is formed between described first hole section and the second hole section, supercharging inclined-plane is formed between described second hole Duan Yu tri-hole section, offer and relief chamber between the madial wall of described second hole section and the 3rd hole section and cover external surface, described relief chamber be divided into the first cavity and the second cavity and with the inclination cavity being connected the first cavity and the second cavity, described first cavity is corresponding with the second hole section, described second cavity is corresponding with the 3rd hole section, described inclination cavity is corresponding with supercharging inclined-plane, the main component of described body is (wt.%): magnesium 13-18%, titanium 7-20%, cobalt 3-7%, nickel 15-20%, vanadium 1-3%, silicon 5-10%, molybdenum 1-3%, tungsten 0.5-1%, iron 5-10%, reinforcing fiber 3-5%, surplus is chromium and other inevitable impurity, wherein reinforcing fiber is silicon carbide whisker and carbon fiber short fiber mixture, and carbon fiber short fiber Mean length is 100-200 micron.
2. marine engine oil sprayer coolant jacket according to claim 1, is characterized in that, in described reinforcing fiber, the mass ratio of silicon carbide whisker and carbon fiber short fiber is (2-3): 1.
3. marine engine oil sprayer coolant jacket according to claim 1, it is characterized in that, described body at least its inner wall surface through following case-carbonizing nitriding treatment: after body pretreating surface carries out pretreatment, body is placed in oven, pour nitrogen into again after oven is vacuumized and keep flow of nitrogen gas 3-5h, nitrogen replacing velocity is 1% of nitrogen total amount in exchange oven per minute, be heated to 800-1000 degree Celsius again, import ammonia and oligomeric polyethylene mixed gas, keep pressure 80-100kpa, wherein ammonia dividing potential drop remains 1-2kpa, oligomeric polyethylene mixed gas dividing potential drop remains 3-5kpa, carry out nitrocarburizing process, processing time is 30-50min, then be cooled to quenching temperature, carry out cool air pulsed quenching and remove protective layer.
4. marine engine oil sprayer coolant jacket according to claim 3, is characterized in that, described pretreatment is the ceramic clay layer applying one deck 3-5mm thickness at body pretreating surface, then normal temperature air-dry after.
5. marine engine oil sprayer coolant jacket according to claim 1, is characterized in that, described cover external surface evenly offers multiple vent communicated with relief chamber.
6. marine engine oil sprayer coolant jacket according to claim 1, it is characterized in that, one end of described body caves inward and is formed with cutting graftage part, be formed between described cutting graftage part and cover external surface and have annular radial platform, the angle of described cutting graftage part outer surface and annular radial platform is provided with fixing slot, and the minimum outer diameter of described fixing slot is less than the external diameter of described cutting graftage part.
7. marine engine oil sprayer coolant jacket according to claim 1, is characterized in that, the other end radial convex of described body is provided with external diameter and is greater than the joint overlapping body diameter, and the outer surface of described joint offers connecting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060600.1A CN104763512A (en) | 2015-02-05 | 2015-02-05 | Cooling jacket for oil sprayer of marine engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060600.1A CN104763512A (en) | 2015-02-05 | 2015-02-05 | Cooling jacket for oil sprayer of marine engine |
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| CN104763512A true CN104763512A (en) | 2015-07-08 |
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| CN201510060600.1A Pending CN104763512A (en) | 2015-02-05 | 2015-02-05 | Cooling jacket for oil sprayer of marine engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968858A (en) * | 2017-03-23 | 2017-07-21 | 上海交通大学 | A kind of inclined hole fuel injector adapter apparatus of adjustable injection direction |
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| CN106968858B (en) * | 2017-03-23 | 2019-08-23 | 上海交通大学 | A kind of inclined hole fuel injector adapter apparatus of adjustable injection direction |
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