CN101745813A - Hollow sodium filling valve and manufacturing method thereof - Google Patents
Hollow sodium filling valve and manufacturing method thereof Download PDFInfo
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- CN101745813A CN101745813A CN 200910231600 CN200910231600A CN101745813A CN 101745813 A CN101745813 A CN 101745813A CN 200910231600 CN200910231600 CN 200910231600 CN 200910231600 A CN200910231600 A CN 200910231600A CN 101745813 A CN101745813 A CN 101745813A
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- valve
- hollow
- sodium
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- bar
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/12—Cooling of valves
- F01L3/14—Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a hollow sodium filling valve and a manufacturing method thereof and belongs to the valve of an engine, in particular to the valve made from two materials. The method of the invention is characterized in that: a steel core serving as an upper die is manufactured according to the shape of an inner hole of the valve; a material blank are extruded and swaged into a hollow valve blank with an inner cavity by utilizing the steel core and a die and using a press machine; and the hollow valve blank is made into the hollow sodium filling valve by the processes of sodium filling, bottom welding and finish machine. The cost of the processing method is lower 50 percent than that of the drilling method. Not only the rod part of the manufactured valve is provided with a column cavity, but also the head part of the valve is provided with a cone cavity. The total volume of the inner cavity is larger about 50 percent than the volume of the inner cavity of the valve only the rod part of which is drilled. The hollow sodium filling valve has better cooling effect of the head part than the existing hollow valve, effectively prevents heat accumulation and sudden temperature rise of the rod part and the head part of the exhaust valve and guarantees the using performance and the service life of the rod part and the head part of the exhaust valve. And at the same time the weight of the valve is reduced and the processing cost of the valve is reduced. Compared with the conventional drilling method, the processing method has low cost, large inner cavity space and good cooling effect.
Description
Technical field
The invention belongs to the valve of engine, particularly two kinds of valves that material is made.
Background technology
Valve is the part of engine valve actuating mechanism, and it guarantees engine at work, and opening and closing on time with fresh combustion mixture input cylinder, and are in time discharged cylinder with waste gas after burning.Exhaust valve adopts hollow to fill the sodium technology, has strengthened heat-sinking capability, has improved the exhaust valve life-span.The technology of hollow sodium filling valve mainly contains German bridle deep hole machining technology at present, after processing method mainly is the valve forging and molding, carries out gun drilling in bar portion, fills sodium, vacuumizes, and blocks up weldering at last, is air gate in the axle.Drill bit is adopted in the processing in hole usually.This method efficient is low, and the cost height can not carry out the cooling of dish portion.
It is a kind of heat pipe-type lightweight air valve that whole hollow connects with the variation of profile that Chinese patent application CN101169054 discloses its heart portion of a kind of lightweight air valve.It is the metal pipe material that has fine and closely woven striped with inwall, earlier stick one deck imbibition core at tube wall, refill powdered inorganic compounds such as full energy infusible sodium sulphate of water-soluble and when compacting, sodium chloride, perhaps fill low-melting alloy and make fill material, will be sealed at both ends firm with plug and baffle plate; Gather material and excise overlap behind die-forging forming through the electricity rammer, this fill material is taken out in boring in the end; It is firm with borehole sealing behind the heat-conducting mediums such as sodium metal, Dowtherm or water to recharge, though this technology can be made the fast heat pipe-type lightweight air valve of the little heat conduction again of a kind of quality.But its intensity difference is not suitable for high-power engine to be used.CN101070765 discloses a kind of motorcycle engine exhaust valve rod, fills sodium metal at the valve stem endoporus.Though this invention can be delivered to the heat of exhaust valve rod head bar portion, and takes away by valve guide bushing, effectively prevented exhaust valve rod head generation heat accumulation and intensification suddenly, ensured the serviceability and the service life of exhaust valve rod.But the cooling-down effect for head is poor, and complex process.
Summary of the invention
The preparation method that the purpose of this invention is to provide a kind of novel hollow sodium filling valve, another object of the present invention provide a kind of hollow sodium filling valve that uses this method to obtain.
Technical scheme of the present invention is that a kind of preparation method of hollow sodium filling valve is characterized in that: mainly comprise the steps:
A. make forge die:
A. size and the required precision according to the product blank drawing designs and produces the inner chamber bed die identical with the product blank shape,
B. press valve finished product inner cavity size and make the carbon steel core and the quenching of valve cavity shape, as mold,
B. blanking, drill centers: by the weight of engine hollow sodium filling valve the bar of diameter 10--30mm austenite material steel is cut into cylindrical material base, billet weight lacks 1%～2% than valve blank weight, bores the guiding centre bore at an end of bar,
C. a hot extrusion: the bar after will holing is heated to 1120-1200 ℃, centre bore is upwards put into the bed die that is installed on the press bench, squeeze into the bar central authorities of red heat being installed in the carbon steel core mold libation at an ancient wedding ceremony lubricant on the slide rail on the forcing press, be hot extruded into the valve nose shape simultaneously, bar portion elongates, and makes valve dumming blank, and the carbon steel core of its core is indeformable, form the valve cavity shape
D. accurate forging and pressing: in 1000～1200 ℃ of forging temperatures, be with plug that head is carried out precision die forging after, form the valve nose shape, forge finish after, press ram drives to move on the patrix extracts plug,
E. clean the valve inner chamber: clean valve inner chamber and oven dry with ultrasonic cleaning technology,
F. process the valve retainer end and seal disk
G. filling sodium seals:
A. fill sodium, charge into sodium metal and getter zirconium powder at normal temperatures in the valve inner chamber, the volume of sodium accounts for about 60% of whole cavity volume, and the zirconium powder volume accounts for the 1-2% of cavity volume,
B. the disk that seals that step F is processed adopts the argon shield gas plasma to be welded to valve retainer end opening part, takes to be incubated the outer cooling measure of sand bar when welding;
H. fine finishining: whole valve blank profile is carried out machining, be processed into the design standard desired valve external dimensions precision and the accuracy of form and position and see Fig. 4.
The invention has the beneficial effects as follows:
One, cost is lower, and is lower by 50% than drilling method cost,
Two, the valve made of the inventive method not only bar portion cylindrical cavity is arranged, and head has conical cavity, total cavity volume is bigger approximately by about 50% than the cavity volume of bar portion boring valve only.Can not only be with the heat of engine valve stem the valve guide bushing that is delivered to by sodium, also with the heat of exhaust valve dish portion by sodium be delivered to the valve outside, and take away by valve guide bushing and valve retainer.Better than general hollow valve head cooling effect, effectively prevented exhaust valve rod portion, head generation heat accumulation and intensification suddenly, ensured the serviceability and the service life of exhaust valve rod and head.The weight of valve reduces simultaneously, and processing cost reduces.Processing method is low than conventional boring method cost, and intracavity space is big, good cooling results.
Description of drawings
Fig. 1 is the carbon steel core schematic diagram,
Fig. 2 is the cylindrical material base figure of band centre bore,
Fig. 3 is the dumming blank schematic diagram that has carbon steel core that forms after the hot extrusion,
Fig. 4 is the shaped article schematic diagram.
The specific embodiment
The specific embodiment of the present invention is, as shown in the figure:
Embodiment 1, and a kind of preparation method of hollow sodium filling valve is characterized in that: mainly comprise the steps:
A. make forge die:
A. size and the required precision according to the product blank drawing designs and produces the inner chamber bed die identical with the product blank shape,
B. press valve finished product inner cavity size and make the carbon steel core and the quenching of valve cavity shape,, see Fig. 1 as mold,
B. blanking, drill centers: with the Ford exhaust valve is example intercepting diameter 24mm, and the bar of the austenite material steel of length 12mm is done material base, uses centre bore in the end brill guiding of bar, sees Fig. 2
C. a hot extrusion: the bar after will holing is heated to 1120～1200 ℃, centre bore is upwards put into the bed die that is installed on the press bench, squeeze into the bar central authorities of red heat being installed in the carbon steel core mold libation at an ancient wedding ceremony lubricant on the slide rail on the forcing press, be hot extruded into the valve nose shape simultaneously, bar portion elongates, and makes valve dumming blank, the carbon steel core of its core is indeformable, form the valve cavity shape, see Fig. 3
D. accurate forging and pressing: keeping forging temperature is 1000～1200 ℃, be with plug that head is carried out precision die forging after, form the valve nose shape, forge finish after, press ram drives to move on the patrix extracts plug,
E. clean the valve inner chamber: clean valve inner chamber and oven dry with ultrasonic cleaning technology,
F. process the valve retainer end and seal disk,
G. filling sodium seals:
A. fill sodium, charge into sodium metal and getter zirconium powder at normal temperatures in the valve inner chamber, the volume of sodium accounts for about 60% of whole cavity volume, and the zirconium powder volume accounts for 1～2% of cavity volume,
B. the disk that seals that step F is processed adopts the argon shield gas plasma to be welded to valve retainer end opening part, takes to be incubated the outer cooling measure of sand bar when welding;
H. fine finishining: whole valve blank profile is carried out machining, be processed into the design standard desired valve external dimensions precision and the accuracy of form and position and see Fig. 4.
Claims (2)
1. the preparation method of a hollow sodium filling valve is characterized in that: comprise the steps: that mainly A. makes forge die:
A. size and the required precision according to the product blank drawing designs and produces the inner chamber bed die identical with the product blank shape,
B. press valve finished product inner cavity size and make the carbon steel core and the quenching of valve cavity shape, as mold,
B. blanking, drill centers: by the weight of engine hollow sodium filling valve the bar of diameter 10--30mm austenite material steel is cut into cylindrical material base, billet weight lacks 1%～2% than valve blank weight, bores the guiding centre bore at an end of bar,
C. a hot extrusion: the bar after will holing is heated to 1120～1200 ℃, centre bore is upwards put into the bed die that is installed on the press bench, squeeze into the bar central authorities of red heat being installed in the carbon steel core mold libation at an ancient wedding ceremony lubricant on the slide rail on the forcing press, be hot extruded into the valve nose shape simultaneously, bar portion elongates, and makes valve dumming blank, and the carbon steel core of its core is indeformable, form the valve cavity shape
D. accurate forging and pressing: in 1000～1200 ℃ of forging temperatures, be with plug that head is carried out precision die forging after, form the valve nose shape, forge finish after, press ram drives to move on the patrix extracts plug,
E. clean the valve inner chamber: clean valve inner chamber and oven dry with ultrasonic cleaning technology,
F. process the valve retainer end and seal disk,
G. filling sodium seals:
A. fill sodium, charge into sodium metal and getter zirconium powder at normal temperatures in the valve inner chamber, the volume of sodium accounts for about 60% of whole cavity volume, and the zirconium powder volume accounts for the 1-2% of cavity volume,
B. the disk that seals that step F is processed adopts the argon shield gas plasma to be welded to valve retainer end opening part, takes to be incubated the outer cooling measure of sand bar when welding;
H. fine finishining: whole valve blank profile is carried out machining, be processed into the external dimensions precision and the accuracy of form and position of the desired valve of design standard.
2. the hollow sodium filling valve that obtains of the described preparation method of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910231600 CN101745813A (en) | 2009-12-11 | 2009-12-11 | Hollow sodium filling valve and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910231600 CN101745813A (en) | 2009-12-11 | 2009-12-11 | Hollow sodium filling valve and manufacturing method thereof |
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| CN101745813A true CN101745813A (en) | 2010-06-23 |
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| CN 200910231600 Pending CN101745813A (en) | 2009-12-11 | 2009-12-11 | Hollow sodium filling valve and manufacturing method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759836A (en) * | 2014-01-02 | 2015-07-08 | 文明星 | Method of manufacturing hallow valve |
| CN104801937A (en) * | 2015-05-11 | 2015-07-29 | 怀集登云汽配股份有限公司 | Novel hollow sodium filled valve forming process |
| CN104801938A (en) * | 2015-05-11 | 2015-07-29 | 怀集登云汽配股份有限公司 | Hollow sodium-filled valve forming process based on cross wedge rolling of billets |
| CN107283131A (en) * | 2017-08-21 | 2017-10-24 | 济南沃德汽车零部件有限公司 | The manufacture method of head hollow valve |
| CN107775283A (en) * | 2016-08-30 | 2018-03-09 | 镇江维纳特气门有限公司 | A kind of manufacture method of valve |
| CN107790963A (en) * | 2016-08-30 | 2018-03-13 | 镇江维纳特气门有限公司 | A kind of blank forming method of valve |
| CN109333070A (en) * | 2018-12-06 | 2019-02-15 | 广东东运科技印刷设备有限公司 | A kind of stifled weldering all-in-one machine of axis |
| CN110449480A (en) * | 2019-08-26 | 2019-11-15 | 宁波思明汽车附件有限公司 | It is a kind of for processing the mold and its manufacturing method of valve cock blank |
| WO2022158181A1 (en) * | 2021-01-25 | 2022-07-28 | フジオーゼックス株式会社 | Hollow engine valve |
-
2009
- 2009-12-11 CN CN 200910231600 patent/CN101745813A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759836A (en) * | 2014-01-02 | 2015-07-08 | 文明星 | Method of manufacturing hallow valve |
| CN104801937A (en) * | 2015-05-11 | 2015-07-29 | 怀集登云汽配股份有限公司 | Novel hollow sodium filled valve forming process |
| CN104801938A (en) * | 2015-05-11 | 2015-07-29 | 怀集登云汽配股份有限公司 | Hollow sodium-filled valve forming process based on cross wedge rolling of billets |
| CN104801937B (en) * | 2015-05-11 | 2017-10-31 | 怀集登云汽配股份有限公司 | A kind of forming technology of Novel hollow valve filled with sodium |
| CN107775283A (en) * | 2016-08-30 | 2018-03-09 | 镇江维纳特气门有限公司 | A kind of manufacture method of valve |
| CN107790963A (en) * | 2016-08-30 | 2018-03-13 | 镇江维纳特气门有限公司 | A kind of blank forming method of valve |
| CN107283131A (en) * | 2017-08-21 | 2017-10-24 | 济南沃德汽车零部件有限公司 | The manufacture method of head hollow valve |
| CN109333070A (en) * | 2018-12-06 | 2019-02-15 | 广东东运科技印刷设备有限公司 | A kind of stifled weldering all-in-one machine of axis |
| CN110449480A (en) * | 2019-08-26 | 2019-11-15 | 宁波思明汽车附件有限公司 | It is a kind of for processing the mold and its manufacturing method of valve cock blank |
| CN110449480B (en) * | 2019-08-26 | 2024-05-10 | 宁波思明汽车附件有限公司 | Die for machining inflating valve blank and manufacturing method thereof |
| WO2022158181A1 (en) * | 2021-01-25 | 2022-07-28 | フジオーゼックス株式会社 | Hollow engine valve |
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Application publication date: 20100623 |