CN205714459U - Titanium piston - Google Patents
Titanium piston Download PDFInfo
- Publication number
- CN205714459U CN205714459U CN201620352420.0U CN201620352420U CN205714459U CN 205714459 U CN205714459 U CN 205714459U CN 201620352420 U CN201620352420 U CN 201620352420U CN 205714459 U CN205714459 U CN 205714459U
- Authority
- CN
- China
- Prior art keywords
- piston
- pin hole
- skirt
- titanium
- welded
- 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.)
- Active
Links
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A kind of titanium piston, including the piston top cheated with concave arc, piston pin hole base, trunk-piston skirt and piston pin hole pipe, pair of pistons pin-and-hole it is arranged with on piston skirt, it is characterized in that: described titanium piston is welded by piston top, piston pin hole base, piston skirt and reinforcement, piston top is welded on piston skirt one end, pair of pistons pin-and-hole pipe is welded in piston skirt relatively, piston pin hole pipe by piston pin hole pipe supporting welding inside piston pin hole.Fundamentally solving the defect that existing manufacturing process is loaded down with trivial details, efficiency is low, manufacturing cost is high, it can be effectively improved the efficiency of internal combustion engine, extends and uses the life-span.
Description
Technical field
This utility model relates to the manufacture field of engine component, and a kind of titanium piston, it is primarily adapted for use in heavy duty.
Background technology
In internal combustion engine (gasoline engine, diesel engine, the general designation of gas engine), piston is referred to as " heart " of internal combustion engine, it is one and bears repeatedly the critical movements part of alternate load under high temperature, high pressure friction, is one of maximum part of working strength, and residing working environment is the most severe.Internal combustion engine top contacts with high temperature, high-pressure gas, and operating temperature is high, and thermic load is big;Its skirt section contacts with cylinder wall, is in high-speed motion state, poor lubrication.General top land temperature is up to more than 300 DEG C, according to different types, operating pressure 3MPa ~ 15MPa, average translational speed 6m/s ~ 15m/s.Therefore require piston material possess following some: there is elevated temperature strength, smaller thermal coefficient of expansion to make has suitable gap in all cases and reduces the noise that machine runs between piston and cylinder, heat absorptivity is poor, heat conductivity is good, density is little, to reduce quality and the inertia force of motion of piston, there is good corrosion-resistant, wear-resisting and low-friction coefficient, reduce friction loss prolongation and use the life-span.
Density 4.51g/cm of titanium titanium alloy3, quality is 1.67 times of aluminium alloy, is the 60% of cast iron；Intensity is aluminium alloy 3 ~ 4 times, is 1.5 times of cast iron；Under conditions of High Temperature High Pressure, titanium alloy has great advantage with aluminium alloy and cast iron.Titanium alloy high-temperature intensity is better than aluminium alloy and cast iron, and the coefficient of expansion is low, at 2.4*10-9DEG C, the aluminum alloy heat coefficient of expansion is at 1.881*10-5DEG C, cast iron is at 1.2*10-5℃.It is used for manufacturing internal combustion engine, aluminium alloy, casting iron deficioncy can be made up.Titanium piston structure can make piston improve intensity, alleviate weight 50%, decrease inertia force, improves heat resistanceheat resistant load-bearing capacity, can bear higher explosion pressure, can improve power per liter.Power per liter (kw/l) embodies Engine Quality height and is primarily to see dynamic property and economy, say, that electromotor to have preferable power, good acceleration and relatively low Fuel Consumption.The titanium skirt of thin-walled, can compensate uneven thermal deformation, and the cylinder prepareding gap between skirt section and cylinder sleeve is little, and steering capability is the best, reduces noise.Titanium alloy can obtain excellent metal ceramic surface corrosion-resistant, anti abrasive by technical finesse.The complicated structure of internal combustion engine, uses conventional mechanical processing and casting method to make titanium alloy piston relatively difficult.Simple titanium alloy can use forging and casting method to make, but stock utilization is the lowest, and manufacturing cost is high.
Utility model content
The purpose of this utility model is to provide a kind of titanium piston, fundamentally solves the defect that existing manufacturing process is loaded down with trivial details, efficiency is low, manufacturing cost is high, and it can be effectively improved the efficiency of internal combustion engine, extends and uses the life-span.
For achieving the above object, this utility model provides following technical scheme: this titanium piston, including the piston top cheated with concave arc, piston pin hole base, trunk-piston skirt and piston pin hole pipe, pair of pistons pin-and-hole it is arranged with on piston skirt, it is characterized in that: described titanium piston is welded by piston top, piston pin hole base, piston skirt and reinforcement, piston top is welded on piston skirt one end, pair of pistons pin-and-hole pipe is welded in piston skirt relatively, piston pin hole pipe by piston pin hole pipe supporting welding inside piston pin hole.
This utility model additionally provides the manufacture method of a kind of titanium piston, is characterized in that, comprises the following steps:
Step 1) use isothermal forging process, 860 DEG C ± 10 DEG C, 5.5 × 10-4s · -1Under constant strain rate, 60% large deformation carry out isothermal forging；Double annealing；900 DEG C ± 10 DEG C insulation 4h, 590 DEG C ± 10 DEG C insulation 4h manufacture piston top；
Step 2) use and wear pressure technique, at 800 DEG C ~ 850 DEG C, deformation rate 30% ~ 50%；Annealing temperature 820 DEG C insulation 2h, manufactures piston skirt with titanium bar；
Step 3) uses argon arc welding, plasma or electro-beam welding process built-up piston；
Step 4) 650 DEG C ~ 700 DEG C insulation 0.2 ~ 4h, 500 DEG C ~ 550 DEG C insulation 0.5 ~ 5h；Piston welding base is carried out twice stress annealing；
After step 5) carries out nitriding, sulfurizing process to piston finished product, get product.
The beneficial effects of the utility model: substitute traditional heat-resisting cast iron with Titanium and manufacture heavy duty piston, piston features is that different parts function is different, use parts processing part assembly welding moulding process, part is manufactured by suitable material and process, after making respectively, assembly welding becomes piston blank, then carries out machining and make titanium piston semi-finished product, then carries out surface and processed the product manufacturing of piston, reduce material cost, simplify the technological process of manufacture.By group technologies such as die forging, rolling, drawing, welding, CNC, sulfurations, by the base of piston, manufacture simplification, manufacturability is complete, smooth, is appropriate to line production, large-scale production.Effectively save the titanium alloy raw material of costliness, reduce process equipment grade, consumption of reducing work hours, thus the large-scale production for low cost is laid a good foundation.Utilize the feature that titanium alloy specific strength is high and the feature that minimizing coefficient of friction can be processed with surface, after internal combustion engine uses titanium piston, not only increase power per liter, save the energy, and effectively reduce the noise of internal combustion engine operation process, improve the power output of internal combustion engine under equal conditions, extend piston service life.
Accompanying drawing explanation
Fig. 1 is decomposition texture schematic diagram of the present utility model.
Description of reference numerals: 1 piston pin hole, 2 piston pin hole pipes, 3 piston pin hole bases, 4 piston tops, 5 piston skirts.
Detailed description of the invention
Below in conjunction with Fig. 1, describe content of the present utility model in detail by specific embodiment.This titanium piston includes piston top, piston pin hole base, trunk-piston skirt and the piston pin hole pipe with concave arc hole, pair of pistons pin-and-hole it is arranged with on piston skirt, it is characterized in that: described titanium piston is welded by piston top, piston pin hole base, piston skirt and reinforcement, piston top is welded on piston skirt one end, pair of pistons pin-and-hole pipe is welded in piston skirt relatively, piston pin hole pipe by piston pin hole pipe supporting welding inside piston pin hole.
The manufacture method of this titanium piston, comprises the following steps:
Step 1) titanium bar cuts, stretch roughing becomes piston top base, uses isothermal forging process, 860 DEG C ± 10 DEG C, 5.5 × 10-4s · -1Under constant strain rate, 60% large deformation carry out isothermal forging；900 DEG C ± 10 DEG C insulation 4h, 590 DEG C ± 10 DEG C insulation 4h, double annealing, make piston top standby；
Step 2) cut with titanium bar, stretch roughing and become piston skirt base, use and wear pressure technique, be incubated 1 ~ 3h at 800 DEG C ~ 850 DEG C；After perforation, reaming tube rolling deformation rate 30% ~ 50%；Annealing temperature 820 DEG C insulation 2h, makes piston skirt standby；
Step 3) uses mechanical processing technique, makes piston hole base with titanium bar, makes reinforcement with titanium alloy side's bar；
Step 4) top land is integrally forming with piston skirt assembly welding, machining piston hole base hole on piston skirt, built-up piston base and firm welding, assembles base reinforcement and firm welding；
Step 5) 0.1Pa ~ 650 DEG C of 1.0Pa vacuum ~ 700 DEG C of insulation 500 DEG C ~ 550 DEG C of 0.2 ~ 4h, 0.1Pa ~ 1.0Pa vacuum insulation 0.5 ~ 5h；Piston welding base is carried out twice stress annealing；
After step 6) carries out nitriding, sulfurizing process to piston finished product, get product.
Titanium or titanium alloy material, can be selected for TC11, TC15, TC4, TA2, HST2425 etc., has the features such as elevated temperature strength is excellent, creep-resistant property is good, cold and hot working performance is good.
Claims (1)
1. a titanium piston, including the piston top cheated with concave arc, piston pin hole base, trunk-piston skirt and piston pin hole pipe, pair of pistons pin-and-hole it is arranged with on piston skirt, it is characterized in that: described titanium piston is welded by piston top, piston pin hole base, piston skirt and reinforcement, piston top is welded on piston skirt one end, pair of pistons pin-and-hole pipe is welded in piston skirt relatively, piston pin hole pipe by piston pin hole pipe supporting welding inside piston pin hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620352420.0U CN205714459U (en) | 2016-04-25 | 2016-04-25 | Titanium piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620352420.0U CN205714459U (en) | 2016-04-25 | 2016-04-25 | Titanium piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714459U true CN205714459U (en) | 2016-11-23 |
Family
ID=57296759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620352420.0U Active CN205714459U (en) | 2016-04-25 | 2016-04-25 | Titanium piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205714459U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804883A (en) * | 2016-04-25 | 2016-07-27 | 沈阳和世泰钛金属应用技术有限公司 | Titanium piston |
-
2016
- 2016-04-25 CN CN201620352420.0U patent/CN205714459U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804883A (en) * | 2016-04-25 | 2016-07-27 | 沈阳和世泰钛金属应用技术有限公司 | Titanium piston |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20190301395A1 (en) | Welded integral forged steel piston and manufacturing process thereof | |
| CN105018824B (en) | A kind of preparation method of P/M cam | |
| CN105804883A (en) | Titanium piston | |
| CN201679576U (en) | Integral aluminium-alloy piston bearing explosion pressure of 20MPa and having inner-cooling structure | |
| RU2741046C1 (en) | Method for production of large-size contour annular article from heat-resistant nickel-base alloy | |
| CN101934341A (en) | Forging technology of TC4 titanium alloy cylindrical part | |
| CN110369949A (en) | A kind of engine cylinder body processing technology | |
| CN101769280A (en) | Cold extruding processing method of spline housing and spline housing produced by same | |
| CN205714459U (en) | Titanium piston | |
| CN102189141A (en) | Method for performing extrusion molding on internal hexagon bolt of alloy steel track end coupling device | |
| CN208089422U (en) | A kind of welded type entirety forging steel piston | |
| CN207261119U (en) | A kind of Split piston | |
| CN108188658B (en) | Composite roller preparation process | |
| CN106622033B (en) | Large-scale mute cubic hydraulic press | |
| CN102678379A (en) | Combined piston for highly-intensified reciprocating internal combustion engine | |
| CN205714457U (en) | The internal combustion engine of titanium aluminum compound structure | |
| CN111992655A (en) | Die forging method for integral crankshaft of large internal combustion engine | |
| CN1166471C (en) | Fine forging technology for automobile claw pole forging | |
| CN107030456B (en) | Manufacturing process of combined piston | |
| CN104421322A (en) | Expansion fracture connecting rod assembly of engine piston | |
| CN108817871B (en) | Manufacturing process method of internal toothed plate of automobile VCR engine | |
| CN105804881A (en) | Internal combustion engine piston of titanium-aluminum composite structure | |
| CN216306046U (en) | High-temperature-resistant and wear-resistant valve seat ring | |
| CN201901696U (en) | High-silicon rare earth aluminum alloy cylinder body of automobile engine | |
| CN201661678U (en) | Novel piston pin |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Song Honghai Inventor after: Zhong Jun Inventor after: Yan Donghui Inventor before: Song Honghai Inventor before: Zhong Jun Inventor before: Yan Donghui |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20170209 Address after: 110000 25-3, Guangchang Road, Shenhe District, Liaoning, Shenyang, China 3-3-2 Patentee after: Yan Gengxu Address before: Shenyang City, Yu Tuo, Liaozhong County, Liaoning Province town of Taiping Village 110206 Patentee before: SHENYANG HESHITAI TITANIUM METAL APPLICATION TECHNOLOGY CO., LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170223 Address after: Hunnan District of Shenyang City, Liaoning province 110000 new long street, room 105 No. 10-1 Patentee after: Shenyang Titanium Equipment Manufacturing Co., Ltd. Address before: 110000 25-3, Guangchang Road, Shenhe District, Liaoning, Shenyang, China 3-3-2 Patentee before: Yan Gengxu |