CN106893943A - A kind of corrosion-resistant engine sump tank and preparation method thereof - Google Patents

A kind of corrosion-resistant engine sump tank and preparation method thereof Download PDF

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CN106893943A
CN106893943A CN201710105244.XA CN201710105244A CN106893943A CN 106893943 A CN106893943 A CN 106893943A CN 201710105244 A CN201710105244 A CN 201710105244A CN 106893943 A CN106893943 A CN 106893943A
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hours
oil sump
incubated
parts
cooled
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CN106893943B (en
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田庭
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Zhejiang Tixing New Energy Automobile Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004Oilsumps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C33/00Making ferrous alloys
    • C22C33/04Making ferrous alloys by melting
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/002Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/005Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/008Ferrous alloys, e.g. steel alloys containing tin
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004Oilsumps
    • F01M2011/0091Oilsumps characterised by used materials

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubricants (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

A kind of corrosion-resistant engine sump tank and its manufacture method, including oil sump body, oil sump body has trapezoid cross section cell body, cell body top is provided with installation edge, surface is coated with alumina series coating, dovetail groove external surface coating silicone resin coating in dovetail groove body, because of oil sump cell body inner surface Long Term Contact grease, its inner surface can be caused to damage, by ferroalloy oil sump cell body inner surface coating alumina system coating, improving corrosion resisting property.

Description

A kind of corrosion-resistant engine sump tank and preparation method thereof
Technical field
The present invention relates to a kind of corrosion-resistant engine sump tank, belongs to technical field of automobile.
Background technology
Oil sump is the important composition part of automobile engine, and it is arranged on engine bottom, for collecting, storing lubrication Oil, and play radiating, prevent oil ageing, closed crankcase etc. from acting on.The automobile engine lubricating oil oil sump of in the market Many to be stamped to form using sheet metal, the high cost of the automobile oil oil sump that metal material makes, itself weight, fuel consumption is high, Waste gas discharge is high, pollution environment is serious.Additionally, the metal oil sump lead time is long, development cost are high, restrict to a certain extent The application of oil sump.
The content of the invention
The good corrosion resistant of a kind of process is simple proposed aiming above mentioned problem of the invention, low cost, corrosion resistance Erosion engine sump tank.
A kind of corrosion-resistant engine sump tank, including oil sump body, oil sump body has trapezoid cross section cell body, in groove Body top is provided with installation edge, and surface is coated with alumina series coating in dovetail groove body, and the coating of dovetail groove external surface is organic Silicon resin coating,
It is characterized in that:Oil sump body chemical composition is(Percentage by weight):C:0.033 ﹪, Cr:12.2 ﹪, Ni:1.4 ﹪, Al:0.82 ﹪, Nb:0.41 ﹪, Si:0.31 ﹪, V:0.12 ﹪, Cu:0.12 ﹪, Ti:0.083 ﹪, Sn:0.044 ﹪, Mn: 0.024 ﹪, Mg:0.021 ﹪, Ta:0.011 ﹪, Ce:0.012 ﹪, balance of Fe and inevitable impurity;
Oil sump preparation method:Comprise the following steps:According to aforementioned proportion alloyage, raw material melting, cast after the demoulding, are obtained To ingot casting be heat-treated:Ingot casting is heated first, is warming up to 800 DEG C, 75 DEG C/h of heating rate, insulation 3 is small When, after be cooled to 600 DEG C, 100 DEG C/h of rate of temperature fall is incubated 3 hours, after be warming up to 750 DEG C, 20 DEG C of heating rate/small When, be incubated 3 hours, after be cooled to 500 DEG C again, 40 DEG C/h of rate of temperature fall is incubated 5 hours, after be cooled to 250 DEG C again, 50 DEG C/h of rate of temperature fall, be incubated 2 hours, after be air cooled to room temperature,
Forging:By ingot casting be heated to 1100 DEG C be incubated 3 hours, after forged, 1100 DEG C of starting forging temperature, by the vertical upsetting of ingot casting Slightly, forcing press often depresses 40mm pause 4s, 850 DEG C of final forging temperature,
Rolling:Blank after forging is heated, 1000 DEG C of heating-up temperature, split rolling method uses 7 passages, passage phase during cogging To reduction ratio control in 15-18%, mill speed controls the slab after 8mm/s, cogging to be incubated at 800 DEG C, soaking time 3 Hour, after be warming up to 1100 DEG C, soaking time was controlled at 2 hours, then carried out hot rolling to blanket, the passage of hot rolling 11, just mill train Secondary relative reduction ratio 8%, other passages are controlled in 10-15% with respect to reduction ratio, and mill speed is controlled in 50mm/s, finishing temperature At 820 DEG C;Sheet metal thickness 2mm, is air cooled to room temperature after rolling,
Punching press:Sheet material is heated into 800 DEG C carries out punching press, is air cooled to room temperature, obtains oil sump body,
Heat treatment:Oil sump body be heated to 750 DEG C be incubated 3 hours, after quenched, hardening media is water, after quenching again Be heated to 500 DEG C and be incubated 3 hours, after be cooled to 350 DEG C, 60 DEG C/h of rate of temperature fall is incubated 2 hours, after be cooled to again 250 DEG C, 50 DEG C/h of rate of temperature fall, be incubated 3 hours, after be air cooled to room temperature,
Sandblasting is roughened:Inner surface and outer surface to trapezoidal cell body in oil sump body carry out sandblasting roughening treatment, and sand grains is stone Sand, the size of sand grains is 20 mesh, and blasting pressure is 0.4MPa, and sand-blasting gun is 40mm away from workpiece distance, empty with compression after sandblasting Air-blowing is net;
Inner surface is coated:Alumina series coating is coated to oil sump cell body inner surface;By being coated in oil sump cell body Surface forms alumina series coating, and alumina series ceramic material layer includes(Weight):72 parts of aluminum oxide, 23 parts of tungsten carbide, oxidation 14 parts of zirconium, the oil sump after coating is heated, and is warming up to 650 DEG C, and 25 DEG C/h of heating rate is incubated 4 hours, drops afterwards To 450 DEG C, 60 DEG C/h of rate of temperature fall is incubated 3 hours to temperature, after be cooled to 300 DEG C again, 50 DEG C/h of rate of temperature fall is protected Temperature 5 hours, after be air cooled to room temperature,
Outer surface coats:Epoxy modified silicone resin coating is coated to oil sump cell body outer surface, the coating includes (Weight):81 parts of organic siliconresin, 12 parts of sodium metasilicate, 11 parts of glass dust, 7 parts of talcum powder, 4 parts of ethylenediamine, 4 parts of magnesium chloride, phosphorus 5 parts of sour zinc, 3 parts of Polymethacrylimide, obtains final oil sump.
Described a kind of corrosion-resistant engine sump tank, also includes:Install and be provided with mounting hole on edge, mounting hole can lead to Over mechanical processing mode is realized.
A kind of manufacture method of corrosion-resistant engine sump tank, including oil sump body, oil sump body have trapezoidal section Face cell body, installation edge is provided with cell body top, and surface is coated with alumina series coating, the external table of dovetail groove in dovetail groove body Face coats silicone resin coating,
It is characterized in that:Oil sump body chemical composition is(Percentage by weight):C:0.03-0.04 ﹪, Cr:12-13 ﹪, Ni: 1-2 ﹪, Al:0.8-0.9 ﹪, Nb:0.4-0.5 ﹪, Si:0.3-0.4 ﹪, V:0.1-0.2 ﹪, Cu:0.1-0.2 ﹪, Ti: 0.08-0.09 ﹪, Sn:0.04-0.05 ﹪, Mn:0.02-0.03 ﹪, Mg:0.02-0.03 ﹪, Ta:0.01-0.02 ﹪, Ce: 0.01-0.02 ﹪, balance of Fe and inevitable impurity;
Oil sump preparation method:Comprise the following steps:According to aforementioned proportion alloyage, raw material melting, cast after the demoulding, are obtained To ingot casting be heat-treated:Ingot casting is heated first, is warming up to 800 DEG C, 75 DEG C/h of heating rate, insulation 3 is small When, after be cooled to 600 DEG C, 100 DEG C/h of rate of temperature fall is incubated 3 hours, after be warming up to 750 DEG C, 20 DEG C of heating rate/small When, be incubated 3 hours, after be cooled to 500 DEG C again, 40 DEG C/h of rate of temperature fall is incubated 5 hours, after be cooled to 250 DEG C again, 50 DEG C/h of rate of temperature fall, be incubated 2 hours, after be air cooled to room temperature,
Forging:By ingot casting be heated to 1100 DEG C be incubated 3 hours, after forged, 1100 DEG C of starting forging temperature, by the vertical upsetting of ingot casting Slightly, forcing press often depresses 40mm pause 4s, 850 DEG C of final forging temperature,
Rolling:Blank after forging is heated, 1000 DEG C of heating-up temperature, split rolling method uses 7 passages, passage phase during cogging To reduction ratio control in 15-18%, mill speed controls the slab after 8mm/s, cogging to be incubated at 800 DEG C, soaking time 3 Hour, after be warming up to 1100 DEG C, soaking time was controlled at 2 hours, then carried out hot rolling to blanket, the passage of hot rolling 11, just mill train Secondary relative reduction ratio 8%, other passages are controlled in 10-15% with respect to reduction ratio, and mill speed is controlled in 50mm/s, finishing temperature At 820 DEG C;Sheet metal thickness 2mm, is air cooled to room temperature after rolling,
Punching press:Sheet material is heated into 800 DEG C carries out punching press, is air cooled to room temperature, obtains oil sump body,
Heat treatment:Oil sump body be heated to 750 DEG C be incubated 3 hours, after quenched, hardening media is water, after quenching again Be heated to 500 DEG C and be incubated 3 hours, after be cooled to 350 DEG C, 60 DEG C/h of rate of temperature fall is incubated 2 hours, after be cooled to again 250 DEG C, 50 DEG C/h of rate of temperature fall, be incubated 3 hours, after be air cooled to room temperature,
Sandblasting is roughened:Inner surface and outer surface to trapezoidal cell body in oil sump body carry out sandblasting roughening treatment, and sand grains is stone Sand, the size of sand grains is 20 mesh, and blasting pressure is 0.4MPa, and sand-blasting gun is 40mm away from workpiece distance, empty with compression after sandblasting Air-blowing is net;
Inner surface is coated:Alumina series coating is coated to oil sump cell body inner surface;By being coated in oil sump cell body Surface forms alumina series coating, and aluminum oxide based materials layer includes(Weight):Aluminum oxide 70-80 parts, tungsten carbide 20-30 parts, oxygen Change 10-20 parts of zirconium, the oil sump after coating heated, be warming up to 650 DEG C, 25 DEG C/h of heating rate is incubated 4 hours, After be cooled to 450 DEG C, 60 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 300 DEG C, 50 DEG C of rate of temperature fall/small again When, be incubated 5 hours, after be air cooled to room temperature,
Outer surface coats:Epoxy modified silicone resin coating is coated to oil sump cell body outer surface, the coating includes (Weight):Organic siliconresin 80-90 parts, sodium metasilicate 10-15 parts, glass dust 10-15 parts, 7 parts of talcum powder, 4 parts of ethylenediamine, chlorination 4 parts of magnesium, 5 parts of trbasic zinc phosphate, 3 parts of Polymethacrylimide obtains final oil sump.
Foregoing invention content is relative to the beneficial effect of prior art:1)The composition of ferroalloy is simple;2)Because of oily bottom Shell cell body inner surface Long Term Contact grease, can cause to damage to its inner surface, be applied by ferroalloy oil sump cell body inner surface Alumina series coating is covered, corrosion resisting property is improved.4)Organic coating is formed to oil sump cell body outer surface and effectively improves weather-proof anti-soil Performance.
Brief description of the drawings
Fig. 1 is oil sump body sectional view.
Specific embodiment
In order to be more clearly understood to technical characteristic of the invention, purpose and effect, now describe in detail of the invention Specific embodiment.
Oil sump body sectional view as shown in Figure 1, oil sump body, oil sump body has trapezoid cross section cell body, in groove Body top is provided with installation edge 3, and surface 1 is coated with alumina series coating in dovetail groove body(It is not shown), the external table of dovetail groove Face 2 coats silicone resin coating(It is not shown),
Embodiment 1
A kind of corrosion-resistant engine sump tank, including oil sump body, oil sump body has trapezoid cross section cell body, on cell body Portion is provided with installation edge, and surface is coated with alumina series coating, dovetail groove external surface coating organosilicon tree in dovetail groove body Grease coating material,
It is characterized in that:Oil sump body chemical composition is(Percentage by weight):C:0.033 ﹪, Cr:12.2 ﹪, Ni:1.4 ﹪, Al:0.82 ﹪, Nb:0.41 ﹪, Si:0.31 ﹪, V:0.12 ﹪, Cu:0.12 ﹪, Ti:0.083 ﹪, Sn:0.044 ﹪, Mn: 0.024 ﹪, Mg:0.021 ﹪, Ta:0.011 ﹪, Ce:0.012 ﹪, balance of Fe and inevitable impurity;
Oil sump preparation method:Comprise the following steps:According to aforementioned proportion alloyage, raw material melting, cast after the demoulding, are obtained To ingot casting be heat-treated:Ingot casting is heated first, is warming up to 800 DEG C, 75 DEG C/h of heating rate, insulation 3 is small When, after be cooled to 600 DEG C, 100 DEG C/h of rate of temperature fall is incubated 3 hours, after be warming up to 750 DEG C, 20 DEG C of heating rate/small When, be incubated 3 hours, after be cooled to 500 DEG C again, 40 DEG C/h of rate of temperature fall is incubated 5 hours, after be cooled to 250 DEG C again, 50 DEG C/h of rate of temperature fall, be incubated 2 hours, after be air cooled to room temperature,
Forging:By ingot casting be heated to 1100 DEG C be incubated 3 hours, after forged, 1100 DEG C of starting forging temperature, by the vertical upsetting of ingot casting Slightly, forcing press often depresses 40mm pause 4s, 850 DEG C of final forging temperature,
Rolling:Blank after forging is heated, 1000 DEG C of heating-up temperature, split rolling method uses 7 passages, passage phase during cogging To reduction ratio control in 15-18%, mill speed controls the slab after 8mm/s, cogging to be incubated at 800 DEG C, soaking time 3 Hour, after be warming up to 1100 DEG C, soaking time was controlled at 2 hours, then carried out hot rolling to blanket, the passage of hot rolling 11, just mill train Secondary relative reduction ratio 8%, other passages are controlled in 10-15% with respect to reduction ratio, and mill speed is controlled in 50mm/s, finishing temperature At 820 DEG C;Sheet metal thickness 2mm, is air cooled to room temperature after rolling,
Punching press:Sheet material is heated into 800 DEG C carries out punching press, is air cooled to room temperature, obtains oil sump body,
Heat treatment:Oil sump body be heated to 750 DEG C be incubated 3 hours, after quenched, hardening media is water, after quenching again Be heated to 500 DEG C and be incubated 3 hours, after be cooled to 350 DEG C, 60 DEG C/h of rate of temperature fall is incubated 2 hours, after be cooled to again 250 DEG C, 50 DEG C/h of rate of temperature fall, be incubated 3 hours, after be air cooled to room temperature,
Sandblasting is roughened:Inner surface and outer surface to trapezoidal cell body in oil sump body carry out sandblasting roughening treatment, and sand grains is stone Sand, the size of sand grains is 20 mesh, and blasting pressure is 0.4MPa, and sand-blasting gun is 40mm away from workpiece distance, empty with compression after sandblasting Air-blowing is net;
Inner surface is coated:Alumina series coating is coated to oil sump cell body inner surface;By being coated in oil sump cell body Surface forms alumina series coating, and alumina series ceramic material layer includes(Weight):72 parts of aluminum oxide, 23 parts of tungsten carbide, oxidation 14 parts of zirconium, the oil sump after coating is heated, and is warming up to 650 DEG C, and 25 DEG C/h of heating rate is incubated 4 hours, drops afterwards To 450 DEG C, 60 DEG C/h of rate of temperature fall is incubated 3 hours to temperature, after be cooled to 300 DEG C again, 50 DEG C/h of rate of temperature fall is protected Temperature 5 hours, after be air cooled to room temperature,
Outer surface coats:Epoxy modified silicone resin coating is coated to oil sump cell body outer surface, the coating includes (Weight):81 parts of organic siliconresin, 12 parts of sodium metasilicate, 11 parts of glass dust, 7 parts of talcum powder, 4 parts of ethylenediamine, 4 parts of magnesium chloride, phosphorus 5 parts of sour zinc, 3 parts of Polymethacrylimide, obtains final oil sump.

Claims (4)

1. a kind of corrosion-resistant engine sump tank, including oil sump body, oil sump body has trapezoid cross section cell body, in cell body Top is provided with installation edge, and surface is coated with alumina series coating, dovetail groove external surface coating organosilicon in dovetail groove body Cold coating,
It is characterized in that:Oil sump body chemical composition is(Percentage by weight):C:0.033 ﹪, Cr:12.2 ﹪, Ni:1.4 ﹪, Al:0.82 ﹪, Nb:0.41 ﹪, Si:0.31 ﹪, V:0.12 ﹪, Cu:0.12 ﹪, Ti:0.083 ﹪, Sn:0.044 ﹪, Mn: 0.024 ﹪, Mg:0.021 ﹪, Ta:0.011 ﹪, Ce:0.012 ﹪, balance of Fe and inevitable impurity;
Oil sump preparation method:Comprise the following steps:According to aforementioned proportion alloyage, raw material melting, cast after the demoulding, are obtained To ingot casting be heat-treated:Ingot casting is heated first, is warming up to 800 DEG C, 75 DEG C/h of heating rate, insulation 3 is small When, after be cooled to 600 DEG C, 100 DEG C/h of rate of temperature fall is incubated 3 hours, after be warming up to 750 DEG C, 20 DEG C of heating rate/small When, be incubated 3 hours, after be cooled to 500 DEG C again, 40 DEG C/h of rate of temperature fall is incubated 5 hours, after be cooled to 250 DEG C again, 50 DEG C/h of rate of temperature fall, be incubated 2 hours, after be air cooled to room temperature,
Forging:By ingot casting be heated to 1100 DEG C be incubated 3 hours, after forged, 1100 DEG C of starting forging temperature, by the vertical upsetting of ingot casting Slightly, forcing press often depresses 40mm pause 4s, 850 DEG C of final forging temperature,
Rolling:Blank after forging is heated, 1000 DEG C of heating-up temperature, split rolling method uses 7 passages, passage phase during cogging To reduction ratio control in 15-18%, mill speed controls the slab after 8mm/s, cogging to be incubated at 800 DEG C, soaking time 3 Hour, after be warming up to 1100 DEG C, soaking time was controlled at 2 hours, then carried out hot rolling to blanket, the passage of hot rolling 11, just mill train Secondary relative reduction ratio 8%, other passages are controlled in 10-15% with respect to reduction ratio, and mill speed is controlled in 50mm/s, finishing temperature At 820 DEG C;Sheet metal thickness 2mm, is air cooled to room temperature after rolling,
Punching press:Sheet material is heated into 800 DEG C carries out punching press, is air cooled to room temperature, obtains oil sump body,
Heat treatment:Oil sump body be heated to 750 DEG C be incubated 3 hours, after quenched, hardening media is water, after quenching again Be heated to 500 DEG C and be incubated 3 hours, after be cooled to 350 DEG C, 60 DEG C/h of rate of temperature fall is incubated 2 hours, after be cooled to again 250 DEG C, 50 DEG C/h of rate of temperature fall, be incubated 3 hours, after be air cooled to room temperature,
Sandblasting is roughened:Inner surface and outer surface to trapezoidal cell body in oil sump body carry out sandblasting roughening treatment, and sand grains is stone Sand, the size of sand grains is 20 mesh, and blasting pressure is 0.4MPa, and sand-blasting gun is 40mm away from workpiece distance, empty with compression after sandblasting Air-blowing is net;
Inner surface is coated:Alumina series coating is coated to oil sump cell body inner surface;By being coated in oil sump cell body Surface forms alumina series coating, and alumina series ceramic material layer includes(Weight):72 parts of aluminum oxide, 23 parts of tungsten carbide, oxidation 14 parts of zirconium, the oil sump after coating is heated, and is warming up to 650 DEG C, and 25 DEG C/h of heating rate is incubated 4 hours, drops afterwards To 450 DEG C, 60 DEG C/h of rate of temperature fall is incubated 3 hours to temperature, after be cooled to 300 DEG C again, 50 DEG C/h of rate of temperature fall is protected Temperature 5 hours, after be air cooled to room temperature,
Outer surface coats:Epoxy modified silicone resin coating is coated to oil sump cell body outer surface, the coating includes (Weight):81 parts of organic siliconresin, 12 parts of sodium metasilicate, 11 parts of glass dust, 7 parts of talcum powder, 4 parts of ethylenediamine, 4 parts of magnesium chloride, phosphorus 5 parts of sour zinc, 3 parts of Polymethacrylimide, obtains final oil sump.
2. a kind of manufacture method of corrosion-resistant engine sump tank, including oil sump body, oil sump body has trapezoid cross section Cell body, installation edge is provided with cell body top, and surface is coated with alumina series coating, dovetail groove external surface in dovetail groove body Coating silicone resin coating,
It is characterized in that:Oil sump body chemical composition is(Percentage by weight):C:0.03-0.04 ﹪, Cr:12-13 ﹪, Ni: 1-2 ﹪, Al:0.8-0.9 ﹪, Nb:0.4-0.5 ﹪, Si:0.3-0.4 ﹪, V:0.1-0.2 ﹪, Cu:0.1-0.2 ﹪, Ti: 0.08-0.09 ﹪, Sn:0.04-0.05 ﹪, Mn:0.02-0.03 ﹪, Mg:0.02-0.03 ﹪, Ta:0.01-0.02 ﹪, Ce: 0.01-0.02 ﹪, balance of Fe and inevitable impurity;
Oil sump preparation method:Comprise the following steps:According to aforementioned proportion alloyage, raw material melting, cast after the demoulding, are obtained To ingot casting be heat-treated:Ingot casting is heated first, is warming up to 800 DEG C, 75 DEG C/h of heating rate, insulation 3 is small When, after be cooled to 600 DEG C, 100 DEG C/h of rate of temperature fall is incubated 3 hours, after be warming up to 750 DEG C, 20 DEG C of heating rate/small When, be incubated 3 hours, after be cooled to 500 DEG C again, 40 DEG C/h of rate of temperature fall is incubated 5 hours, after be cooled to 250 DEG C again, 50 DEG C/h of rate of temperature fall, be incubated 2 hours, after be air cooled to room temperature,
Forging:By ingot casting be heated to 1100 DEG C be incubated 3 hours, after forged, 1100 DEG C of starting forging temperature, by the vertical upsetting of ingot casting Slightly, forcing press often depresses 40mm pause 4s, 850 DEG C of final forging temperature,
Rolling:Blank after forging is heated, 1000 DEG C of heating-up temperature, split rolling method uses 7 passages, passage phase during cogging To reduction ratio control in 15-18%, mill speed controls the slab after 8mm/s, cogging to be incubated at 800 DEG C, soaking time 3 Hour, after be warming up to 1100 DEG C, soaking time was controlled at 2 hours, then carried out hot rolling to blanket, the passage of hot rolling 11, just mill train Secondary relative reduction ratio 8%, other passages are controlled in 10-15% with respect to reduction ratio, and mill speed is controlled in 50mm/s, finishing temperature At 820 DEG C;Sheet metal thickness 2mm, is air cooled to room temperature after rolling,
Punching press:Sheet material is heated into 800 DEG C carries out punching press, is air cooled to room temperature, obtains oil sump body,
Heat treatment:Oil sump body be heated to 750 DEG C be incubated 3 hours, after quenched, hardening media is water, after quenching again Be heated to 500 DEG C and be incubated 3 hours, after be cooled to 350 DEG C, 60 DEG C/h of rate of temperature fall is incubated 2 hours, after be cooled to again 250 DEG C, 50 DEG C/h of rate of temperature fall, be incubated 3 hours, after be air cooled to room temperature,
Sandblasting is roughened:Inner surface and outer surface to trapezoidal cell body in oil sump body carry out sandblasting roughening treatment, and sand grains is stone Sand, the size of sand grains is 20 mesh, and blasting pressure is 0.4MPa, and sand-blasting gun is 40mm away from workpiece distance, empty with compression after sandblasting Air-blowing is net;
Inner surface is coated:Alumina series coating is coated to oil sump cell body inner surface;By being coated in oil sump cell body Surface forms alumina series coating, and aluminum oxide based materials layer includes(Weight):Aluminum oxide 70-80 parts, tungsten carbide 20-30 parts, oxygen Change 10-20 parts of zirconium, the oil sump after coating heated, be warming up to 650 DEG C, 25 DEG C/h of heating rate is incubated 4 hours, After be cooled to 450 DEG C, 60 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 300 DEG C, 50 DEG C of rate of temperature fall/small again When, be incubated 5 hours, after be air cooled to room temperature,
Outer surface coats:Epoxy modified silicone resin coating is coated to oil sump cell body outer surface, the coating includes (Weight):Organic siliconresin 80-90 parts, sodium metasilicate 10-15 parts, glass dust 10-15 parts, 7 parts of talcum powder, 4 parts of ethylenediamine, chlorination 4 parts of magnesium, 5 parts of trbasic zinc phosphate, 3 parts of Polymethacrylimide obtains final oil sump.
3. a kind of corrosion-resistant engine sump tank as claimed in claim 1, oil sump body chemical composition is(Weight percent Than):C:0.03 ﹪, Cr:12 ﹪, Ni:1 ﹪, Al:0.8 ﹪, Nb:0.4 ﹪, Si:0.3 ﹪, V:0.1 ﹪, Cu:0.1 ﹪, Ti: 0.08 ﹪, Sn:0.04 ﹪, Mn:0.02 ﹪, Mg:0.02 ﹪, Ta:0.01 ﹪, Ce:0.01 ﹪, balance of Fe and inevitably Impurity.
4. a kind of corrosion-resistant engine sump tank as claimed in claim 1, aluminum oxide based materials layer can include(Weight):Oxygen Change 70 parts of aluminium, 20 parts of tungsten carbide, 10 parts of zirconium oxide.
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