CN109356924A - A kind of automobile engine bottom case nut and its manufacturing method - Google Patents
A kind of automobile engine bottom case nut and its manufacturing method Download PDFInfo
- Publication number
- CN109356924A CN109356924A CN201811339100.1A CN201811339100A CN109356924A CN 109356924 A CN109356924 A CN 109356924A CN 201811339100 A CN201811339100 A CN 201811339100A CN 109356924 A CN109356924 A CN 109356924A
- Authority
- CN
- China
- Prior art keywords
- nut
- bottom case
- fixed frame
- automobile
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 230000006835 compression Effects 0.000 claims abstract description 30
- 238000007906 compression Methods 0.000 claims abstract description 30
- 230000010354 integration Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 48
- 239000010959 steel Substances 0.000 claims description 48
- 239000002994 raw material Substances 0.000 claims description 27
- 230000003647 oxidation Effects 0.000 claims description 25
- 238000007254 oxidation reaction Methods 0.000 claims description 25
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000000576 coating method Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
- 238000005266 casting Methods 0.000 claims description 19
- 229910000805 Pig iron Inorganic materials 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- 238000010791 quenching Methods 0.000 claims description 15
- 230000000171 quenching effect Effects 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 12
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 12
- 238000004381 surface treatment Methods 0.000 claims description 12
- 238000003723 Smelting Methods 0.000 claims description 10
- 239000003921 oil Substances 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000002518 antifoaming agent Substances 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910052758 niobium Inorganic materials 0.000 claims description 6
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 229920002050 silicone resin Polymers 0.000 claims description 6
- 239000000080 wetting agent Substances 0.000 claims description 6
- 239000007822 coupling agent Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 238000013459 approach Methods 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
- F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
- F16B37/061—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of welding
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/008—Corrosion preventing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/06—Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure or fretting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
- F16B43/001—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts for sealing or insulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The present invention provides a kind of automobile engine bottom case fixture nuts, including nut body, tapped through hole is set on nut body, nut body one end is integrally formed with fixed frame, fixed frame through-hole is set on fixed frame, the one end of nut body far from fixed frame is nut compression end, a circular cone is set in its outer side wall surface, nut compression end is equipped with the compression end tapped through hole being made into integration with tapped through hole, the diameter of compression end tapped through hole is less than tapped through hole diameter, circular cone is gradually reduced by fixed frame outer diameter to nut compression extreme direction, the present invention also provides the manufacturing methods of above-mentioned automobile engine bottom case fixture nut.The corresponding collet threaded through-hole diameter in the compression end side of automobile engine bottom case fixture nut of the present invention is less than the diameter of tapped through hole, compression end cooperates even closer with bolt, the manufacturing approach craft of automobile engine bottom case fixture nut of the present invention not easy to fall off is simple, at low cost, and the nut strength produced is high, anti-delayed fracture resistance is strong, quality is high.
Description
Technical field
The present invention relates to automotive engine applications, and in particular to a kind of automobile engine bottom case nut and its manufacturing method.
Background technique
The engine of automobile is located at the lower part of car engine, and engine is a kind of equipment for converting electrical energy into mechanical energy,
Make the power resources of running car.The oily bottom of engine is mounted on the bottom of engine, it is using crankcase seals as oil storage tank
Shell, be the lower half of crankcase, be otherwise known as lower crankcase.The top of the cylinder block of engine is cylinder body, lower part subpackage
Oil sump i.e. lower crankcase is included, cylinder body and crankcase are by being bolted together.The effect of oil sump is slightly to deposit machine oil, and sealing is bent
Axle box makes crankcase be known as a clean working environment, the dirty leakage being also avoided that in lubricating oil.
Existing automobile engine nut is generally standard component, and nut needs to utilize elasticity in the engagement process with bolt
The pressure of part increase between the two, and then the extruding force promoted between screw thread and screw thread makes nut to play the effect of fastening
It will not be loosened with bolt.This conventional use of nut standard component is under the action of impact, vibration or heavy burden load, spiral shell
Frictional force between line and screw thread can be gradually reduced or pop-off, so that the pine for occurring being threadedly coupled moves back, or even will cause solid
Determine falling off, losing for part, and cause the leakage of crankcase inner engine oil, engine apparatus is made to break down.
Summary of the invention
It is an object of the invention to: in view of the deficiencies of the prior art, simple, manufacture craft that the present invention provides a kind of structures
Simple automobile engine bottom case nut,.
In order to achieve the above purpose, present invention employs technical solutions below:
A kind of automobile engine bottom case fixture nut, including nut body, the nut body is equipped with tapped through hole, described
One end of nut body be wholely set fixed frame, the fixed frame is equipped with the fixed frame being coaxially disposed with tapped through hole
Through-hole, the one end of the nut body far from fixed frame is nut compression end, the table of the lateral wall of the nut compression end
Face is equipped with a circular cone, and the circular cone is equipped with several circular orientation table tops, and the nut compression end is equipped with
The compression end tapped through hole being made into integration with tapped through hole, it is straight that the diameter of the compression end tapped through hole is less than tapped through hole
Diameter, the circular cone are gradually reduced by fixed frame outer diameter to nut compression extreme direction.
Preferably, the circular orientation table top is equipped with several locating pieces.Using the technical solution of above-mentioned technology
Afterwards, when applying pressure to compression end using tool, tool is not susceptible to sliding position.
Preferably, the fixed frame is equipped with interconnecting piece, the interconnecting piece is equipped with solder joint, the fixed frame
Arc setting is made on periphery, and the diameter of the fixed frame is greater than the diameter of the nut body cross section.Using above-mentioned excellent
After selecting scheme, fixed frame is directly welded to connect with automobile parts, stronger, avoids falling off.The setting of fixed frame periphery arc can
Injury to avoid fixed frame to installation and maintenance personnel, more securely and reliably.
Preferably, the fixed frame is equipped with seal groove, sealing ring is equipped in the seal groove.
Preferably, one section inner sidewall of the compression end tapped through hole far from fixed frame is equipped with the annular conical surface,
The diameter of the annular conical surface compresses extreme direction by fixed frame to nut and is gradually increased.After above-mentioned preferred embodiment,
The diameter of the compression end tapped through hole of automobile bottom case fixture nut of the invention be less than tapped through hole diameter, then with respective bolt
When cooperation, bolt is not easy in precession nut, and after the annular conical surface is arranged, automobile bottom case nut of the invention and respective bolt can be with
More easily cooperate.
The present invention also provides a kind of simple processes, the manufacturing method of automobile engine bottom case fixture nut, including with
Lower step:
(1) cast raw material is smelted to obtain the cast raw material fusant of molten condition, 1480-1500 DEG C of smelting temperature, smelting
The refining time is 6.5-9h;
(2) cast raw material fusant is cast into mold die and forms the steel billet of automobile bottom case fixture nut, the temperature of casting
It is 1350-1380 DEG C, casting time 2.5-3.0s, the component of the steel billet is as follows: C:3-5%, Si:1.1-1.2%, Mn:
1.2-1.3%, Cr:0.06-0.3%, Nb:0.01-0.05%, V0.01-0.05%, Ni:0.02-0.05%, B:0.003-0.006%,
P≤0.08%、S≤0.08%;
(3) steel billet for the automobile bottom case fixture nut for forming casting is cooling, and steel billet after cooling is quenched, described
Quenching treatment the following steps are included: by heating steel billet to 15-20min is kept the temperature after 850-900 DEG C, then quenching into temperature is 230-
In 270 DEG C of oil and 15-20min is kept the temperature, taking-up, which is placed in, to be cooled down at room temperature to get the automobile fixture nut is arrived;
(4) automobile bottom case fixture nut after cooling is surface-treated, the surface treatment includes surface chemistry oxidation
Processing and coating corrosion-resistant.
Preferably, the cast raw material is the pig iron and steel scrap, the pig iron and steel scrap
Ratio are as follows: the pig iron: 30-40%, steel scrap: 60-70%.After above-mentioned preferred embodiment, the raw material of use is easy to get, at
This is cheap.
Preferably, the surface chemistry oxidation processes include by the carry out surface chemistry oxygen of automobile shell bottom fixture nut
Change processing makes the surface of automobile shell bottom nut form oxidation film, then applies to the automobile bottom case fixture nut of automobile after surface treatment
Coating is covered, the raw material parts by weights meter of the coating includes following components: modified organic silicone resin 8-15, silicon nitride 4-6, being received
Rice silica 1 8-35, diatomite 10-25, zinc oxide 3-5, nano-titanium dioxide 25-40, graphite 11-15, talcum powder 3-6,
Silicon nitride 4-6, defoaming agent 2-4, levelling agent 2-4, wetting agent 2-6, curing agent 22-50, coupling agent 6-9.Using above-mentioned preferred
After scheme, surface chemistry oxidation processes are it is possible to prevente effectively from nut is oxidized corrosion, so that nut be protected to improve automobile bottom case spiral shell
Female service life.After automobile bottom case nut table face is coated with coating, isolation automobile bottom case nut interior can be further protected
Metal is contacted with air or the direct of other media, it can be effectively prevent to be addled.The paint adhesion of above-mentioned formula is strong, no
Cracking easy to fall off can be further improved the service life of nut.
The corresponding collet threaded through-hole diameter in compression end side of automobile engine bottom case fixture nut of the invention is less than
The diameter of tapped through hole, compression end cooperate even closer with bolt, it is not easy to the fixed spiral shell of that falls off automobile engine bottom case of the present invention
Female manufacturing approach craft is simple, at low cost, and the nut strength produced is high, anti-delayed fracture resistance is strong, quality is high.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the embodiment of the present invention;
Fig. 2 is the longitudinal profile structure schematic of automobile bottom case fixture nut of the present invention.
Specific embodiment
As Figure 1-Figure 2, specifically a kind of automobile engine bottom case fixture nut of the embodiment of the present invention, including nut
Ontology 1, nut body 1 are equipped with tapped through hole 11, and one end of nut body 1 has been wholely set fixed frame 2, and fixed frame 2 is four
Side shape, fixed frame 2 are equipped with the fixed frame through-hole 21 being coaxially disposed with tapped through hole 11.Nut body 1 far from fixed frame 2 one
End is nut compression end 12.The surface of the lateral wall of nut compression end 12 is equipped with a circular cone 121.On circular cone 121
Equipped with a circular orientation table top 122.Circular orientation table top 122 is equipped with locating piece 123.Nut compression end 12 is equipped with and tapped through hole
The 11 compression end tapped through holes 124 being made into integration.Nut body 1 and fixed frame 2 are integrally formed by the method for cast molding.Pressure
The diameter of tight end tapped through hole 124 is less than 11 diameter of tapped through hole, and circular cone 121 is compressed by 2 outer diameter of fixed frame to nut
12 directions are held to be gradually reduced.Fixed frame 2 is equipped with interconnecting piece 22, and interconnecting piece 22 is equipped with solder joint 221.Make arc in 2 periphery of fixed frame
Shape setting.The diameter of fixed frame 2 is greater than the diameter of 1 cross section of nut body.Fixed frame 2 is equipped with the seal groove 23 of annular, close
Sealing ring 24 is equipped in sealing groove 23.One section inner sidewall of the compression end tapped through hole 11 far from fixed frame 2 is equipped with the annular conical surface
13, the diameter of the annular conical surface 13 is gradually increased by fixed frame 2 to 12 direction of nut compression end.
Embodiment 1
The manufacturing method of above-mentioned automobile engine bottom case fixture nut, specifically includes the following steps:
(5) cast raw material is smelted to obtain the cast raw material fusant of molten condition, 1480 DEG C of smelting temperature, the duration of heat
For 9h;
(6) cast raw material fusant is cast into mold die and forms the steel billet of automobile bottom case fixture nut, the temperature of casting
It is 1350 DEG C, the component of casting time 3.0s, steel billet are as follows: C:5%, Si:1.1%, Mn:1.3%, Cr:0.2%, Nb:
0.04%, V:0.04%, Ni:0.02%, B:0.006%, P:0.08%, S:0.08%;Cast raw material is the pig iron and steel scrap, the pig iron and useless
The ratio of steel are as follows: the pig iron: 35%, steel scrap: 65%.
(7) steel billet for the automobile bottom case fixture nut for forming casting is cooling, and steel billet after cooling is quenched,
The following steps are included: by heating steel billet to 20min is kept the temperature after 850 DEG C, then quenching into temperature is 260 DEG C for the quenching treatment
In oil and 20min is kept the temperature, taking-up, which is placed in, to be cooled down at room temperature to get the automobile fixture nut is arrived;
(8) automobile bottom case fixture nut after cooling is surface-treated, surface treatment include surface chemistry oxidation processes and
Coating corrosion-resistant.Surface chemistry oxidation processes include by the carry out surface chemistry oxidation processes of automobile shell bottom fixture nut,
The surface of automobile shell bottom nut is set to form oxidation film, the automobile bottom case fixture nut of automobile coats coating, coating after surface treatment
Raw material parts by weights meter include following components: modified organic silicone resin 9, silicon nitride 5, nano silica 30, diatomite 10,
Zinc oxide 3, nano-titanium dioxide 30, graphite 14, talcum powder 5, silicon nitride 5, defoaming agent 3, levelling agent 3, wetting agent 3, curing agent
30, coupling agent 7.
Hardness test, the present embodiment are carried out to the product of automobile bottom case fixture nut and the prior art made from the present embodiment
It manufactures resulting bottom case fixture nut and improves 30% than the product hardness of the prior art.
Crack detection, the present embodiment are carried out to the product of automobile bottom case fixture nut and the prior art made from the present embodiment
Manufacturing resulting bottom case fixture nut reduces 10% than the cracking breakout of the product of the prior art.
Embodiment 2
The manufacturing method of above-mentioned automobile engine bottom case fixture nut, specifically includes the following steps:
(9) cast raw material is smelted to obtain the cast raw material fusant of molten condition, 1500 DEG C of smelting temperature, the duration of heat
For 6.5h;
(10) cast raw material fusant is cast into mold die and forms the steel billet of automobile bottom case fixture nut, the temperature of casting
It is 1380 DEG C, the component of casting time 2.5s, steel billet are as follows: C:3%, Si:1.2%, Mn:1.2%, Cr:0.3%, Nb:
0.02%, V:0.03%, Ni:0.04%, B:0.004%, P≤0.05%, S≤0.06%;Cast raw material be the pig iron and steel scrap, the pig iron with
The ratio of steel scrap are as follows: the pig iron: 40%, steel scrap: 60%.
(11) steel billet for the automobile bottom case fixture nut for forming casting is cooling, and steel billet after cooling is carried out at quenching
Reason, for the quenching treatment the following steps are included: by heating steel billet to 15min is kept the temperature after 900 DEG C, then quenching into temperature is 230
Oil in and keep the temperature 20min, taking-up, which is placed in, to be cooled down at room temperature to get to automobile fixture nut;
Automobile bottom case fixture nut after cooling is surface-treated, surface treatment includes surface chemistry oxidation processes and coating
Corrosion resistant coating.Surface chemistry oxidation processes include that the carry out surface chemistry oxidation processes of automobile shell bottom fixture nut are made vapour
The surface of vehicle shell bottom nut forms oxidation film, and the automobile bottom case fixture nut of automobile coats coating, the original of coating after surface treatment
Expect that parts by weights meter includes following components: modified organic silicone resin 14, silicon nitride 6, nano silica 14, diatomite 23, oxygen
Change zinc 4, nano-titanium dioxide 35, graphite 11, talcum powder 3, silicon nitride 4, defoaming agent 2, levelling agent 2, wetting agent 2, curing agent
220, coupling agent 6.
Hardness test, the present embodiment are carried out to the product of automobile bottom case fixture nut and the prior art made from the present embodiment
It manufactures resulting bottom case fixture nut and improves 33% than the product hardness of the prior art.
Crack detection, the present embodiment are carried out to the product of automobile bottom case fixture nut and the prior art made from the present embodiment
Manufacturing resulting bottom case fixture nut reduces 12% than the cracking breakout of the product of the prior art
Embodiment 3
The manufacturing method of above-mentioned automobile engine bottom case fixture nut, specifically includes the following steps:
(12) cast raw material is smelted to obtain the cast raw material fusant of molten condition, 1490 DEG C of smelting temperature, when smelting
Between be 8h;
(13) cast raw material fusant is cast into mold die and forms the steel billet of automobile bottom case fixture nut, the temperature of casting
It is 1365 DEG C, the component of casting time 2.7s, steel billet are as follows: C:4%, Si:1.15%, Mn:1.24%, Cr:0.06%, Nb:
0.01%, V0.04%, Ni:0.05%, B:0.005%, P:0.04%, S:0.03%;Cast raw material is the pig iron and steel scrap, the pig iron and useless
The ratio of steel are as follows: the pig iron: 36%, steel scrap: 64%.
(14) steel billet for the automobile bottom case fixture nut for forming casting is cooling, and steel billet after cooling is carried out at quenching
Reason, for the quenching treatment the following steps are included: by heating steel billet to 18min is kept the temperature after 860 DEG C, then quenching into temperature is 255
Oil in and keep the temperature 17min, taking-up, which is placed in, to be cooled down at room temperature to get to automobile fixture nut;
Automobile bottom case fixture nut after cooling is surface-treated, surface treatment includes surface chemistry oxidation processes and coating
Corrosion resistant coating.Surface chemistry oxidation processes include that the carry out surface chemistry oxidation processes of automobile shell bottom fixture nut are made vapour
The surface of vehicle shell bottom nut forms oxidation film, and the automobile bottom case fixture nut of automobile coats coating, the original of coating after surface treatment
Expect that parts by weights meter includes following components: modified organic silicone resin 13, silicon nitride 4, nano silica 18, diatomite 18, oxygen
Change zinc 5, nano-titanium dioxide 40, graphite 15, talcum powder 6, silicon nitride 6, defoaming agent 4, levelling agent 4, wetting agent 6, curing agent 41,
Coupling agent 8.
Hardness test, the present embodiment are carried out to the product of automobile bottom case fixture nut and the prior art made from the present embodiment
It manufactures resulting bottom case fixture nut and improves 28% than the product hardness of the prior art.
Crack detection, the present embodiment are carried out to the product of automobile bottom case fixture nut and the prior art made from the present embodiment
Manufacturing resulting bottom case fixture nut reduces 11% than the cracking breakout of the product of the prior art
Embodiment 4
The manufacturing method of above-mentioned automobile engine bottom case fixture nut, specifically includes the following steps:
(15) cast raw material is smelted to obtain the cast raw material fusant of molten condition, 1475 DEG C of smelting temperature, when smelting
Between be 7.5h;
(16) cast raw material fusant is cast into mold die and forms the steel billet of automobile bottom case fixture nut, the temperature of casting
It is 1375 DEG C, the component of casting time 2.8s, steel billet are as follows: C:4%, Si:1.18%, Mn:1.28%, Cr:0.07%, Nb:
0.01%, V:0.05%, Ni:0.05%, B:0.003%, P:0.02%, S:0.01%;Cast raw material is the pig iron and steel scrap, the pig iron and useless
The ratio of steel are as follows: the pig iron: 38%, steel scrap: 62%.
(17) steel billet for the automobile bottom case fixture nut for forming casting is cooling, and steel billet after cooling is carried out at quenching
Reason, quenching treatment the following steps are included: by heating steel billet to 16min is kept the temperature after 885 DEG C, then quench be 270 DEG C into temperature oil
In and keep the temperature 15min, taking-up, which is placed in, to be cooled down at room temperature to get to the automobile fixture nut;
Automobile bottom case fixture nut after cooling is surface-treated, surface treatment includes surface chemistry oxidation processes and coating
Corrosion resistant coating.Surface chemistry oxidation processes include that the carry out surface chemistry oxidation processes of automobile shell bottom fixture nut are made vapour
The surface of vehicle shell bottom nut forms oxidation film, and the automobile bottom case fixture nut of automobile coats coating, the original of coating after surface treatment
Expect that parts by weights meter includes following components: modified organic silicone resin 8, silicon nitride 4, nano silica 35, diatomite 25, oxidation
Zinc 4, nano-titanium dioxide 25, graphite 13, talcum powder 4, silicon nitride 5, defoaming agent 3, levelling agent 3, wetting agent 4, curing agent 50, idol
Join agent 9.
Hardness test, the present embodiment are carried out to the product of automobile bottom case fixture nut and the prior art made from the present embodiment
It manufactures resulting bottom case fixture nut and improves 32% than the product hardness of the prior art.
Crack detection, the present embodiment are carried out to the product of automobile bottom case fixture nut and the prior art made from the present embodiment
Manufacturing resulting bottom case fixture nut reduces 12% than the cracking breakout of the product of the prior art.
Claims (8)
1. a kind of automobile engine bottom case fixture nut, including nut body, the nut body is equipped with tapped through hole,
Be characterized in that: one end of the nut body has been wholely set fixed frame, and the fixed frame is equipped with same with tapped through hole
The fixed frame through-hole of axis setting, the one end of the nut body far from fixed frame is nut compression end, and the nut compresses
The surface of the lateral wall at end is equipped with a circular cone, and the circular cone is equipped with several circular orientation table tops, described
Nut compression end is equipped with the compression end tapped through hole being made into integration with tapped through hole, and the diameter of the compression end tapped through hole is small
In tapped through hole diameter, the circular cone is gradually reduced by fixed frame outer diameter to nut compression extreme direction.
2. automobile engine bottom case fixture nut according to claim 1, it is characterised in that: the circular orientation table top
It is equipped with several locating pieces.
3. automobile engine bottom case fixture nut according to claim 1, it is characterised in that: the fixed frame is equipped with
Interconnecting piece, the interconnecting piece are equipped with solder joint, and arc setting is made on the fixed frame periphery, and the diameter of the fixed frame is big
In the diameter of the nut body cross section.
4. automobile engine bottom case fixture nut according to claim 1 or 3, it is characterised in that: on the fixed frame
Equipped with seal groove, sealing ring is equipped in the seal groove.
5. automobile engine bottom case fixture nut according to claim 1, it is characterised in that: the compression end screw thread is logical
One section inner sidewall of the hole far from fixed frame is equipped with the annular conical surface, and the diameter of the annular conical surface is by fixed frame to nut
Extreme direction is compressed to be gradually increased.
6. a kind of manufacturing method of automobile engine bottom case fixture nut as described in claim 1, it is characterised in that including with
Lower step:
Cast raw material is smelted to obtain the cast raw material fusant of molten condition, 1480-1500 DEG C of smelting temperature, when smelting
Between be 6.5-9h;
Cast raw material fusant is cast into mold die and forms the steel billet of automobile bottom case fixture nut, the temperature of casting is
1350-1380 DEG C, casting time 2.5-3.0s, the component of the steel billet is as follows: C:3-5%, Si:1.1-1.2%, Mn:
1.2-1.3%, Cr:0.06-0.3%, Nb:0.01-0.05%, V0.01-0.05%, Ni:0.02-0.05%, B:0.003-0.006%,
P≤0.08%、S≤0.08%;
The steel billet for the automobile bottom case fixture nut that casting is formed is cooling, and steel billet after cooling is quenched, described
For quenching treatment the following steps are included: by heating steel billet to 15-20min is kept the temperature after 850-900 DEG C, then quenching into temperature is 230-
In 270 DEG C of oil and 15-20min is kept the temperature, taking-up, which is placed in, to be cooled down at room temperature to get the automobile fixture nut is arrived;
Automobile bottom case fixture nut after cooling is surface-treated, the surface treatment includes surface chemistry oxidation processes
And coating corrosion-resistant.
7. the manufacturing method of automobile engine bottom case fixture nut according to claim 6, it is characterised in that: the casting
Making raw material is the pig iron and steel scrap, the ratio of the pig iron and steel scrap are as follows: the pig iron: 30-40%, steel scrap: 60-70%.
8. the manufacturing method of automobile engine bottom case fixture nut according to claim 6 or 7, it is characterised in that: described
Surface chemistry oxidation processes include that the carry out surface chemistry oxidation processes of automobile shell bottom fixture nut are made into automobile shell bottom nut
Surface formed oxidation film, then to after surface treatment automobile automobile bottom case fixture nut coat coating, the original of the coating
Expect that parts by weights meter includes following components: modified organic silicone resin 8-15, silicon nitride 4-6, nano silica 18-35, diatom
Native 10-25, zinc oxide 3-5, nano-titanium dioxide 25-40, graphite 11-15, talcum powder 3-6, silicon nitride 4-6, defoaming agent 2-4,
Levelling agent 2-4, wetting agent 2-6, curing agent 22-50, coupling agent 6-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811339100.1A CN109356924B (en) | 2018-11-12 | 2018-11-12 | Automobile engine bottom shell nut and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811339100.1A CN109356924B (en) | 2018-11-12 | 2018-11-12 | Automobile engine bottom shell nut and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109356924A true CN109356924A (en) | 2019-02-19 |
| CN109356924B CN109356924B (en) | 2024-03-29 |
Family
ID=65344833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811339100.1A Active CN109356924B (en) | 2018-11-12 | 2018-11-12 | Automobile engine bottom shell nut and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109356924B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11315818A (en) * | 1998-05-01 | 1999-11-16 | Ito Seisakusho:Kk | Nut device |
| US20040109740A1 (en) * | 2001-09-28 | 2004-06-10 | Nilsen Martin J. | Threaded fastener nut with anti-cross threading radiused features and tactile feedback features |
| US20060127169A1 (en) * | 2004-12-10 | 2006-06-15 | Bollhoff Verbindungstechnik Gmbh | Threaded joining assembly with tolerances compensating means |
| DE202008017013U1 (en) * | 2008-12-23 | 2009-03-05 | Hummel Ag | Compression fitting for fixing elongated bodies or pipes |
| CN106050878A (en) * | 2016-08-04 | 2016-10-26 | 浙江塞福乐特种紧固件有限公司 | Locknut and production method thereof |
| CN205780199U (en) * | 2016-07-15 | 2016-12-07 | 安徽江淮汽车股份有限公司 | A kind of automobile nut cover |
| KR20170138259A (en) * | 2016-06-07 | 2017-12-15 | 이래에이엠에스 주식회사 | Press-Fit Type Locking Apparatus |
| CN107630903A (en) * | 2016-07-18 | 2018-01-26 | 天津市天龙得冷成型部件有限公司 | The engine sump tank nut of automobile |
| CN107630905A (en) * | 2016-07-18 | 2018-01-26 | 天津市天龙得冷成型部件有限公司 | The engine sump tank nut of new automobile |
| CN108426106A (en) * | 2018-06-09 | 2018-08-21 | 海盐四通管件制造有限公司 | A kind of novel anti-loosening pipe joint connecting piece |
| CN207814192U (en) * | 2018-01-04 | 2018-09-04 | 昆山中固精密五金有限公司 | A kind of anti-theft nut |
| CN209586909U (en) * | 2018-11-12 | 2019-11-05 | 瑞安市振安车辆配件有限公司 | A kind of automobile engine bottom case fixture nut |
-
2018
- 2018-11-12 CN CN201811339100.1A patent/CN109356924B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11315818A (en) * | 1998-05-01 | 1999-11-16 | Ito Seisakusho:Kk | Nut device |
| US20040109740A1 (en) * | 2001-09-28 | 2004-06-10 | Nilsen Martin J. | Threaded fastener nut with anti-cross threading radiused features and tactile feedback features |
| US20060127169A1 (en) * | 2004-12-10 | 2006-06-15 | Bollhoff Verbindungstechnik Gmbh | Threaded joining assembly with tolerances compensating means |
| DE202008017013U1 (en) * | 2008-12-23 | 2009-03-05 | Hummel Ag | Compression fitting for fixing elongated bodies or pipes |
| KR20170138259A (en) * | 2016-06-07 | 2017-12-15 | 이래에이엠에스 주식회사 | Press-Fit Type Locking Apparatus |
| CN205780199U (en) * | 2016-07-15 | 2016-12-07 | 安徽江淮汽车股份有限公司 | A kind of automobile nut cover |
| CN107630903A (en) * | 2016-07-18 | 2018-01-26 | 天津市天龙得冷成型部件有限公司 | The engine sump tank nut of automobile |
| CN107630905A (en) * | 2016-07-18 | 2018-01-26 | 天津市天龙得冷成型部件有限公司 | The engine sump tank nut of new automobile |
| CN106050878A (en) * | 2016-08-04 | 2016-10-26 | 浙江塞福乐特种紧固件有限公司 | Locknut and production method thereof |
| CN207814192U (en) * | 2018-01-04 | 2018-09-04 | 昆山中固精密五金有限公司 | A kind of anti-theft nut |
| CN108426106A (en) * | 2018-06-09 | 2018-08-21 | 海盐四通管件制造有限公司 | A kind of novel anti-loosening pipe joint connecting piece |
| CN209586909U (en) * | 2018-11-12 | 2019-11-05 | 瑞安市振安车辆配件有限公司 | A kind of automobile engine bottom case fixture nut |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109356924B (en) | 2024-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103469024B (en) | Special aluminum-alloy material for liquid die-forging molding of aluminum-alloy wheels of heavy-duty vehicle and molding method | |
| CN101539064B (en) | Aluminum alloy engine crankcase without cylinder sleeve | |
| CN203936347U (en) | Heavy wall is the moulds of industrial equipment of bearing shell karmarsch alloy vibration centrifugal casting technique radially | |
| CN207003254U (en) | Separate type hot-cast anchor rope | |
| CN105063476A (en) | Bolt and processing method thereof | |
| CN106566935A (en) | A liquid die forging aluminium alloy and a preparing method thereof | |
| CN105598389A (en) | Process for casting seal rainproof complex flanges | |
| CN103789481B (en) | High-toughness spherical iron and manufacturing method thereof | |
| CN109356924A (en) | A kind of automobile engine bottom case nut and its manufacturing method | |
| CN105671280A (en) | Manufacturing method for steel forging used for critical component of deep sea Christmas tree | |
| CN104032238B (en) | A kind of preparation method of anticorrosion shock-resistant valve | |
| CN211942837U (en) | Forged high-strength aluminum alloy hub | |
| CN111231574A (en) | Forged high-strength aluminum alloy hub and preparation method thereof | |
| CN110732654A (en) | Liquid die forging process for high-chromium cast iron plate hammers | |
| CN105838947A (en) | Ultra-high strength wear-resisting aluminum alloy material and production process thereof | |
| CN108790656A (en) | A kind of distance rod and its manufacturing method | |
| CN102994861B (en) | A kind of castmethod of spherical check valve rod | |
| CN104690222A (en) | High-strength wear-resistant roller production technology | |
| CN102699306A (en) | Method for die-casting low porosity intake/exhaust sleeve | |
| CN106191581A (en) | A kind of EMU gear case body dedicated aluminium alloy material | |
| CN102979937B (en) | Check valve body aluminum alloy casting method | |
| CN105838965A (en) | Alloy steel material for engine piston | |
| CN209586909U (en) | A kind of automobile engine bottom case fixture nut | |
| CN101576115A (en) | Eccentric rotating shaft preparation method with allen wrench hole | |
| CN106010025A (en) | Rust inhibiting coating for steel and preparation method of rust inhibiting coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |