CN102536569A - Novel oil needle of oil injector and surface treatment method of novel oil needle - Google Patents
Novel oil needle of oil injector and surface treatment method of novel oil needle Download PDFInfo
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- CN102536569A CN102536569A CN2012100160849A CN201210016084A CN102536569A CN 102536569 A CN102536569 A CN 102536569A CN 2012100160849 A CN2012100160849 A CN 2012100160849A CN 201210016084 A CN201210016084 A CN 201210016084A CN 102536569 A CN102536569 A CN 102536569A
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Abstract
The invention relates to an oil needle of an engine oil injector and a surface treatment method of the novel oil needle. The aim of the invention is to provide an oil needle with high wear-resistant capability and a method capable of effectively enhancing wear resistance and erosion resistance of the oil needle. The oil needle has the technical scheme that the novel oil needle of the oil injector comprises a steel oil needle and is characterized in that a layer of non-hydrogen noncrystalline carbon composite film is deposited on the outer surface of the oil needle; the composite film comprises a three-layer structure; the bottom layer is a pure metal atom transition layer; the middle layer is a component gradient layer; and the outer surface layer is a nano multilayer noncrystalline carbon film. A surface treatment method of the novel oil needle of the oil injector is performed according to the following steps of: 1) executing ultrasonic washing on the oil needle for 30 minutes by adopting a metal oil removing washing agent, then drying; 2) pre-sputtering washing the washed and dried oil needle, putting the oil needle into a vacuum cavity of unbalance magnetic control sputtering ion plating equipment of a closed field for carrying out ion sputtering washing for 30 to 60 minutes; and 3) coating the film.
Description
Technical field
The present invention relates to a kind of engine fuel injector spindle and surface treatment method thereof.
Background technique
Oil sprayer is that diesel engine fuel oil is supplied with realization fuel-injected vitals in the system, and its function is the characteristics that form according to the diesel engine mixed gas, fuel spray is changed into trickle oil droplet, and it is ejected into specific position, firing chamber.Oil sprayer should satisfy the requirement of dissimilar firing chambers to spray characteristics; Generally speaking, spray should have certain penetration distance and spray cone angle, and good atomization quality, and weeping does not take place when end of injection, and this just requires oil sprayer to have good quality of fit.
Spindle and needle-valve cover are the precision pairs of a pair of key in the oil spraying device of diesel oil engine, and its matching gap required precision is very high.In the high-speed motion process, the spindle surface is prone to wear and tear, and the gap that itself and needle-valve are overlapped becomes big, causes the engine oil ability drop easily, and efficient reduces and the oil plant waste.In recent years, in order to improve oil spout efficient, the injection pressure of oil sprayer improves gradually in the DENG, and this makes that the operating mode of spindle idol part is more and more abominable; The quality problem of domestic fuel oil has more been aggravated the wearing and tearing of spindle idol part in addition, causes shorten greatly working life, does not reach design demand.Thereby the antiwear property that improves spindle idol part and working life to improving the oil sprayer injection pressure, improve oil spout usefulness, satisfy the emission request that improves constantly, realize protecting the target of environment energy saving to be significant.
Spindle is generally by the high speed steel or the Bearing Steel manufacturing of good thermal stability.But because spindle is to the required precision of size higher (particularly circularity, cylindricity require); Conventional surface modification technology (like spraying, phosphatization etc.) does not reach required precision, therefore needs a kind of less novel surface processing method that can significantly improve its antiwear property again of dimensional accuracy influence to spindle.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned background technology, a kind of improvement of oil sprayer spindle is provided, this spindle should possess high antiwear property, simultaneously the high again characteristics of precision.
Another object of the present invention provides that a kind of this method should be able to both satisfy the spindle dimension precision requirement to oil sprayer spindle surface-treated method, can improve the wear resistance and the erosion wear resistance of spindle again effectively, increases the service life.
Technological scheme provided by the invention is:
A kind of novel oil sprayer spindle comprises the steel spindle; The outside deposition that it is characterized in that spindle the non-hydrogen amorphous composite membrane that a layer thickness is 1.2～3 μ m; This composite membrane comprises three-decker; Bottom is the pure metal atomic transition layer that is coated on spindle steel substrate surface; The mesosphere is the component gradient layer that carbon atom and metallic atom are formed, and external layer is the nanometer multilayer amorphous carbon-film that mixes the trace meter atom; Above-mentioned metallic atom is chromium Cr, or titanium Ti, or zirconium Zr, or silver-colored Ag.
The thickness of said pure metal atomic transition layer is 0.1～1.5um: the thickness of said component gradient layer is 0.5～2um, and the carbon atom wherein and the ratio of metallic atom are 0～60: 1; The thickness of said nanometer multilayer amorphous carbon-film is 0.6～2.5um, and the carbon atom wherein and the ratio of metallic atom are 50～80: 1.
A kind of surface treatment method of novel oil sprayer spindle, carry out according to following steps:
1) adopt the metal degreasing washing agent that spindle was carried out ultrasonic cleaning 30 minutes, then oven dry;
2) preparatory sputter clean
Spindle behind the cleaning, drying is put into the vacuum chamber of closed field unbalanced magnetron sputtering ion plating equipment, carries out ion sputtering and cleans, and the time is 30～60 minutes;
3) plated film
In the vacuum chamber of closed field unbalanced magnetron sputtering ion plating equipment; Successively spindle is carried out 10～20 minutes metallic atom sputter to form pure metal atomic transition layer; 50～80 minutes carbon atom sputter and metallic atom sputter are to form the composition gradient layer, and the nanometer multilayer amorphous carbon-film of trace meter atom is mixed in metallic atom sputter in 90～120 minutes and carbon atom sputter with formation;
Above-mentioned metallic atom is chromium Cr, or titanium Ti, or zirconium Zr, or silver.
Said step 2) must in vacuum chamber, feed argon gas in, purity is 99.99%, and flow is 25～35sccm.
Must in vacuum chamber, feed argon gas in the said step 3), purity is 99.99%, and flow is 15～30sccm.
The invention has the beneficial effects as follows; Since the spindle outside deposition non-hydrogen amorphous composite membrane as thin as a wafer; Not only can keep the original precision of spindle; And this composite film has utmost point low coefficient of friction and erosion wear resistance, and (friction factor is 0.02～0.08, and hardness is 1400～2800HV, and the specific wear rate is 3 * 10
-17～9 * 10
-17m
3/ Nm), can significantly reduce the resistance to motion of spindle idol part, improve wear resistance, effectively resist the erosion of high-pressure injection fuel oil and the impact of well cuts particulate, (2-3 that increases the service life is doubly) significantly increases the service life.
Said processing method is owing to adopted the closed field unbalanced magnetron sputtering ion plating equipment; Thereby can be easily and effectively at the non-hydrogen amorphous composite membrane of spindle surface uniform deposition; And then significantly improved the surface property and the wear resistance of spindle, prolonged the working life of spindle significantly.
Description of drawings
Fig. 1 is the main TV structure schematic representation of spindle.
Fig. 2 is the working principle schematic representation of closed field unbalanced magnetron sputtering ion plating equipment.
Embodiment
The amorphous state that amorphous carbon-film mainly is made up of sp2, sp3 hydridization carbon and the no hydrogen carbon film of crystallite attitude structure; Amorphous carbon-film has excellent character such as high hardness, anti-wear-resisting, low coefficient of friction, optical lens photosensitiveness and chemical inertness, thereby is widely used in fields such as various protective coating, wear resistant coating, optical window, magnetic memory device, feds and solar cell.
In the spindle structural representation shown in Figure 1, the outer surface of spindle 10 is coated with the non-hydrogen amorphous composite membrane that thickness is 1.2～3 μ m; This composite membrane comprises three-decker, and bottom is the pure metal atomic transition layer that is bonded in spindle steel substrate surface, and thickness is 0.1～1.5um; The mesosphere is the component gradient layer that carbon atom and metallic atom are formed, and thickness is about 0.5～2um; External layer is the nanometer multilayer amorphous carbon-film that mixes the trace meter atom, and thickness is about 0.6～2.5um.
Above-mentioned metallic atom can be chromium Cr, or titanium Ti, or zirconium Zr, or silver-colored Ag.
The ratio of carbon atom and metallic atom is 0～60: 1 in the said component gradient layer, along steel substrate surface normal direction (promptly direction) from inside to outside, is that a carbon increases the process that metallic atom reduces gradually gradually; The ratio of carbon atom and metallic atom is 50～80: 1 in the said nanometer multilayer amorphous carbon-film,
Except that indicating especially, ratio described herein is the atomic quantity ratio.
The non-hydrogen amorphous composite membrane of spindle surface deposition according to the invention is realized through closed field unbalanced magnetron sputtering ion plating equipment (outsourcing device).The main structure of this equipment is: contain four perpendicular to horizontal plane and each other form closed (as shown in Figure 2) with the magnetron control target of an angle of 90 degrees annular array, wherein 1 and 2 is metal targets, and No. 3 and No. 4 is graphite target; 5,6,7 for laying the running shaft of the work rest pallet of spindle in the vacuum chamber, each disk rotates around running shaft in the process implementing process simultaneously; 8 is the position of assigning spindle, and spindle is certainly in the rotation of process implementing process discontinuous property; Therefore spindle can form the rotation of four secondary axes around centre rotational axis 5, and purpose is to guarantee the dimensional accuracy of spindle.
The main process step of preparation process according to the invention is following:
One, the spindle that processing is reached required precision uses metal degreasing washing agent (like acetone) to carry out ultrasonic cleaning 30 minutes; The anchor clamps of fully packing into after the drying; And put into the vacuum chamber of closed field unbalanced magnetron sputtering ion plating equipment, vacuum chamber is evacuated to 2～5 * 10
-5Torr.
Two, in vacuum chamber, feed argon gas; Purity of argon is 99.99%, and flow is 25～35sccm; Device parameter is adjusted to the ion cleaning process, is specially: pulsed bias 500～600V, pulse frequency 150～250KHz, pulse width 500～1000ns, two metallic target target current 0.3～0.5A, the ion sputtering clean time is 30～60 minutes.
Three, pulsed bias is reduced to 150～200V, two metallic target target currents are increased to 4～5A, keep other parameter constants, carry out the preparatory sputter clean of metal targets, the time is 5～10 minutes.
Four, pulsed bias is reduced to 50～80V, two metallic target target currents are increased to 5～6A, keep other parameter constants, depositing pure gold belongs to the atomic transition layer, and the time is 10～20 minutes.
Five, keep the step 4 pulsed voltage; Set pulse frequency 40～80KHz, pulse width 1200～1800ns, argon flow amount is reduced to 15～20sccm; Two metallic target target currents are reduced to 0.15～0.32A by the setting value linearity of step 4; Two graphite target target currents are increased to 6～7A by the 0A linearity, deposition composition gradient layer, and the time is 50～80 minutes.
Six, keep the last setup parameter of step 5, deposition is mixed the nanometer multilayer amorphous carbon-film of minor metallic element, and the time is 90～120 minutes.
Embodiment 1:
The non-hydrogen amorphous composite membrane on steel spindle surface comprises three-decker, and bottom is the pure metal atomic transition layer that is coated on the steel substrate, and thickness is 0.1um; The mesosphere is the component gradient layer that carbon atom and metallic atom are formed, and thickness is 2um, and the carbon atom wherein and the ratio of metallic atom are 0～60: 1, are that a carbon increases the process that metallic atom reduces gradually gradually along Normal direction; External layer is the nanometer multilayer amorphous carbon-film that mixes the trace meter atom, and thickness is 0.6um, and the carbon atom wherein and the ratio of metallic atom are 80: 1; Above-mentioned metallic atom is chromium Cr.
Embodiment 2:
The non-hydrogen amorphous composite membrane on steel spindle surface comprises three-decker, and bottom is the pure metal atomic transition layer that is coated on the steel substrate, and thickness is 0.8um; The mesosphere is the component gradient layer that carbon atom and metallic atom are formed, and thickness is 1um, and the carbon atom wherein and the ratio of metallic atom are 0～40: 1, are that a carbon increases the process that metallic atom reduces gradually gradually along Normal direction; External layer is the nanometer multilayer amorphous carbon-film that mixes the trace meter atom, and thickness is 1.2um, and the carbon atom wherein and the ratio of metallic atom are 60: 1; Above-mentioned metallic atom is titanium Ti.
Embodiment 3:
The non-hydrogen amorphous composite membrane on steel spindle surface comprises three-decker, and bottom is the pure metal atomic transition layer that is coated on the steel substrate, and thickness is 1.5um; The mesosphere is the component gradient layer that carbon atom and metallic atom are formed, and thickness is 0.5um, and the carbon atom wherein and the ratio of metallic atom are 0～50: 1, are that a carbon increases the process that metallic atom reduces gradually gradually along Normal direction; External layer is the nanometer multilayer amorphous carbon-film that mixes the trace meter atom, and thickness is 2.5um, and the carbon atom wherein and the ratio of metallic atom are 50: 1; Above-mentioned metallic atom is zirconium Zr.
Embodiment 4:
The non-hydrogen amorphous composite membrane on steel spindle surface comprises three-decker, and bottom is the pure metal atomic transition layer that is coated on the steel substrate, and thickness is 0.5um; The mesosphere is the component gradient layer that carbon atom and metallic atom are formed, and thickness is 1.5um, and the carbon atom wherein and the ratio of metallic atom are 0～60: 1, are that a carbon increases the process that metallic atom reduces gradually gradually along Normal direction; External layer is the nanometer multilayer amorphous carbon-film that mixes the trace meter atom, and thickness is 2.0um, and the carbon atom wherein and the ratio of metallic atom are 70: 1; Above-mentioned metallic atom is silver-colored Ag.
Claims (5)
1. a novel oil sprayer spindle comprises steel spindle (10); The outside deposition that it is characterized in that spindle the non-hydrogen amorphous composite membrane that a layer thickness is 1.2～3 μ m; This composite membrane comprises three-decker; Bottom is the pure metal atomic transition layer that is coated on spindle steel substrate surface; The mesosphere is the component gradient layer that carbon atom and metallic atom are formed, and external layer is the nanometer multilayer amorphous carbon-film that mixes the trace meter atom; Above-mentioned metallic atom is chromium Cr, or titanium Ti, or zirconium Zr, or silver-colored Ag.
2. a kind of novel oil sprayer spindle according to claim 1; It is characterized in that: the thickness of said pure metal atomic transition layer is 0.1～1.5um: the thickness of said component gradient layer is 0.5～2um, and the carbon atom wherein and the ratio of metallic atom are 0～60: 1; The thickness of said nanometer multilayer amorphous carbon-film is 0.6～2.5um, and the carbon atom wherein and the ratio of metallic atom are 50～80: 1.
3. the surface treatment method of a novel oil sprayer spindle, carry out according to following steps:
1) adopt the metal degreasing washing agent that spindle was carried out ultrasonic cleaning 30 minutes, then oven dry;
2) preparatory sputter clean
Spindle behind the cleaning, drying is put into the vacuum chamber of closed field unbalanced magnetron sputtering ion plating equipment, carries out ion sputtering and cleans, and the time is 30～60 minutes;
3) plated film
In the vacuum chamber of closed field unbalanced magnetron sputtering ion plating equipment; Successively spindle is carried out 10～20 minutes metallic atom sputter to form pure metal atomic transition layer; 50～80 minutes carbon atom sputter and metallic atom sputter are to form the composition gradient layer, and the nanometer multilayer amorphous carbon-film of trace meter atom is mixed in metallic atom sputter in 90～120 minutes and carbon atom sputter with formation;
Above-mentioned metallic atom is chromium Cr, or titanium Ti, or zirconium Zr, or silver.
4. the surface treatment method of a kind of novel oil sprayer spindle according to claim 3 is characterized in that: must in vacuum chamber, feed argon gas said step 2), purity is 99.99%, and flow is 25～35sccm.
5. the surface treatment method of a kind of novel oil sprayer spindle according to claim 4 is characterized in that: must in vacuum chamber, feed argon gas in the said step 3), purity is 99.99%, and flow is 15～30sccm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100160849A CN102536569A (en) | 2012-01-19 | 2012-01-19 | Novel oil needle of oil injector and surface treatment method of novel oil needle |
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|---|---|---|---|
| CN2012100160849A CN102536569A (en) | 2012-01-19 | 2012-01-19 | Novel oil needle of oil injector and surface treatment method of novel oil needle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468017A (en) * | 2018-03-20 | 2018-08-31 | 西安福莱电工合金有限公司 | A kind of magnetically controlled sputter method preparing silver-colored graphite composite deposite in copper contact surfaces |
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| CN101209606A (en) * | 2007-12-25 | 2008-07-02 | 浙江大学 | Self-lubricating wear-resistant graphite/TiC gradient composite film |
| CN101554790A (en) * | 2009-05-18 | 2009-10-14 | 浙江大学 | Ultra-hard carbon film and preparation method thereof |
| WO2010012704A1 (en) * | 2008-07-28 | 2010-02-04 | Robert Bosch Gmbh | Anti-wear layer arrangement and component comprising an anti-wear layer arrangement |
| CN101821425A (en) * | 2007-09-28 | 2010-09-01 | 卡特彼勒公司 | The method of coating fuel system components |
| WO2010133388A1 (en) * | 2009-05-18 | 2010-11-25 | Robert Bosch Gmbh | Anti-wear layer arrangement and structural element having an anti-wear layer arrangement |
| CN202451336U (en) * | 2012-01-19 | 2012-09-26 | 浙江汇锦梯尔镀层科技有限公司 | Novel oil needle for oil sprayer |
-
2012
- 2012-01-19 CN CN2012100160849A patent/CN102536569A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101821425A (en) * | 2007-09-28 | 2010-09-01 | 卡特彼勒公司 | The method of coating fuel system components |
| CN101209606A (en) * | 2007-12-25 | 2008-07-02 | 浙江大学 | Self-lubricating wear-resistant graphite/TiC gradient composite film |
| WO2010012704A1 (en) * | 2008-07-28 | 2010-02-04 | Robert Bosch Gmbh | Anti-wear layer arrangement and component comprising an anti-wear layer arrangement |
| CN101554790A (en) * | 2009-05-18 | 2009-10-14 | 浙江大学 | Ultra-hard carbon film and preparation method thereof |
| WO2010133388A1 (en) * | 2009-05-18 | 2010-11-25 | Robert Bosch Gmbh | Anti-wear layer arrangement and structural element having an anti-wear layer arrangement |
| CN202451336U (en) * | 2012-01-19 | 2012-09-26 | 浙江汇锦梯尔镀层科技有限公司 | Novel oil needle for oil sprayer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468017A (en) * | 2018-03-20 | 2018-08-31 | 西安福莱电工合金有限公司 | A kind of magnetically controlled sputter method preparing silver-colored graphite composite deposite in copper contact surfaces |
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Application publication date: 20120704 |