CN2439919Y - Tappet arm of composite material with iron-substrate surface - Google Patents
Tappet arm of composite material with iron-substrate surface Download PDFInfo
- Publication number
- CN2439919Y CN2439919Y CN 00244443 CN00244443U CN2439919Y CN 2439919 Y CN2439919 Y CN 2439919Y CN 00244443 CN00244443 CN 00244443 CN 00244443 U CN00244443 U CN 00244443U CN 2439919 Y CN2439919 Y CN 2439919Y
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- iron
- tappet
- composite material
- base surface
- material layer
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Abstract
The utility model provides a tappet arm with a composite material layer with an iron-substrate surface. An arm body of the utility model is made of high-strength grey cast iron or nodular cast iron, an iron-substrate composite material layer of the working surface at the bottom is formed by combining the enhanced phases of carbide or oxide ceramic uniformly distributed on a basal body of iron, and a diffusing transition layer formed in the process of casting and sintering is also arranged between the iron-base surface composite material layer and the arm body. The tappet arm not only has the advantages of high wear resistance and high heat resistance of ceramic materials, but also retains the high strength and the high flexibility of iron materials so as to form an outer-hard and the inner-flexible type, and the utility model has good combination property, can bear high load and severe working environment, and is especially suitable for modern high-speed engines.
Description
The utility model belongs to the article made from metal based composite material technical field, is that a kind of Fe-base surface compound material that has with the ceramic particle enhancing is the tappet of working face.
Tappet is the vital part of engine breathing mechanism, raising along with high speed engine rotating speed and pressure, require its should have can be under high pressure, high speed and sharp wear operating mode the characteristic of operate as normal, but but existing quench hardening type tappet and chilled iron tappet all can not meet the demands.They or lack the hard wild phase, or the hard wild phase hardness that has not high (only for HV800), and poor morphology, be easy to generate and peel off and spot corrosion, so these two kinds of tappets are easily excessive wear all, thereby make not exclusively emergent power decline of engine combustion, oil consumption increase and increasing environmental pollution.
The purpose of this utility model is exactly to overcome the defective that existing tappet exists, and provides a kind of working face to have the tappet of Fe-base surface compound material sinter layer structure.
The purpose of this utility model is to be reached by a kind of like this technical solution: the working surface of tappet that this technical solution is showed bottom is the Fe-base surface compound material layer, should have high-wearing feature and better heat-resisting, corrosion resistance so that tappet bottom working surface to be provided; The tappet shaft is spheroidal graphite cast-iron or casting pig, with intensity, plasticity and the toughness that provides shaft to have; Because the Fe-base surface compound material layer forms by cast-sintering, thus between shaft and Fe-base surface compound material layer, also have the diffusion transition layer, so that firm metallurgical binding to be provided.
Wherein, the Fe-base surface compound material layer serve as reasons on the martensite of iron or martensite+austenite or pearlite matrix evenly distribution WC, VC, TiC, (Cr, Fe)
7C
3, (Cr, Fe)
23C
6Deng carbide ceramics or Al
2O
3, ZrO
2Combine Deng one or both or two or more ceramic enhancement phase in the oxide ceramics, THICKNESS CONTROL is 1～4mm.This material layer is to utilize the heat of molten iron to make coat or the pressed compact generation sintering densification that is positioned on the tappet mo(U)ld face in manufacture process, and finally the end face in the tappet bottom generates.
The diffusion transition layer is served as reasons, and the even carbide that distributes netted chromium constitutes on the martensite of iron or martensite+austenite or pearlite matrix, and thickness is 0.5～1.5mm.
The utility model compared with the prior art, because the working surface of tappet bottom contains a large amount of high-hardness ceramic wild phases (hardness HV1800～3000), and its form is also fine, therefore this tappet had both had high-wearing feature, the hear resistance of ceramic material, the high strength and the high tenacity that have kept ferrous materials again, hard interior tough outside can accomplishing, very excellent comprehensive performances is arranged, can bear higher load and harsher working environment, the particularly suitable modern high-speed engines.
Description of drawings:
Fig. 1 is the main TV structure schematic diagram of tubular tappet of iron-base surface composite material;
Fig. 2 is the main TV structure schematic diagram of T shape tappet of iron-base surface composite material.
Provide the embodiment of the utility model tappet below in conjunction with accompanying drawing, and it is described in detail.
Embodiment 1:
As shown in Figure 1, the tappet of present embodiment is to be made of shaft 1 and bottom working surface 2, tappet shaft 1 is the cylindrical shape of end sealing, the working surface of bottom is positioned at the outer face of shaft 1 blind end, be Fe-base surface compound material layer 2, be by on the martensite of iron or martensite+austenite or pearlite matrix evenly distribution WC, VC, TiC, (Cr, Fe)
7C
3, (Cr, Fe)
23C
6Deng carbide ceramics or Al
2O
3, ZrO
2Constitute Deng one or both or two or more ceramic enhancement phase in the oxide ceramics, thickness is 1～4mm.Tappet shaft 1 is made for spheroidal graphite cast-iron or casting pig.Because Fe-base surface compound material layer 2 forms through cast-sintering, so also be formed with diffusion transition layer 3 between tappet shaft 1 and Fe-base surface compound material 2.This diffusion transition layer 3 is served as reasons, and the even carbide that distributes netted chromium constitutes on the martensite of iron or martensite+austenite or pearlite matrix.Thickness is 0.5～1.5mm.
Embodiment 2:
As shown in Figure 2, the tappet of present embodiment also is to be made of shaft 1 and bottom working surface 2.Tappet shaft 1 is T-shaped, and bottom working surface 2 is positioned at the outer face of the T shape end of shaft 1.Material, the thickness of this working surface 2, tappet shaft 1 and the diffusion transition layer 3 between the two are identical with embodiment 1, slightly.
Claims (4)
1. tappet of iron-base surface composite material, it is characterized in that tappet shaft (1) is spheroidal graphite cast-iron or casting pig, the working surface of tappet (1) bottom is Fe-base surface compound material layer (2), and also has diffusion transition layer (3) between tappet shaft (1) and Fe-base surface compound material layer (2).
2. tappet of iron-base surface composite material according to claim 1, the thickness that it is characterized in that tappet Fe-base surface compound material layer (2) is 1～4mm, the thickness of diffusion transition layer (3) is 0.5～1.5mm.
3. tappet of iron-base surface composite material according to claim 1 and 2, it is characterized in that tappet (1) Fe-base surface compound material layer (2) serve as reasons on the martensite of iron or martensite+austenite or pearlite matrix evenly distribution WC, VC, TiC, (Cr, Fe)
7C
3, (Cr, Fe)
23C
6Deng carbide ceramics or Al
2O
3, ZrO
2Constitute Deng one or both or two or more ceramic enhancement phase in the oxide ceramics.
4. tappet of iron-base surface composite material according to claim 1 and 2 is characterized in that serve as reasons evenly the distribute carbide of netted chromium of diffusion transition layer (3) in the tappet (1) constitutes on the martensite of iron or martensite+austenite or pearlite matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00244443 CN2439919Y (en) | 2000-09-14 | 2000-09-14 | Tappet arm of composite material with iron-substrate surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00244443 CN2439919Y (en) | 2000-09-14 | 2000-09-14 | Tappet arm of composite material with iron-substrate surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2439919Y true CN2439919Y (en) | 2001-07-25 |
Family
ID=33604117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00244443 Expired - Fee Related CN2439919Y (en) | 2000-09-14 | 2000-09-14 | Tappet arm of composite material with iron-substrate surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2439919Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915026A (en) * | 2010-07-15 | 2010-12-15 | 翁文广 | Novel automobile brake and clutch lock |
| CN106424740A (en) * | 2016-09-30 | 2017-02-22 | 昆明理工大学 | Tungsten carbide particle reinforced steel matrix surface-layer composite material and preparation method thereof |
-
2000
- 2000-09-14 CN CN 00244443 patent/CN2439919Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915026A (en) * | 2010-07-15 | 2010-12-15 | 翁文广 | Novel automobile brake and clutch lock |
| CN106424740A (en) * | 2016-09-30 | 2017-02-22 | 昆明理工大学 | Tungsten carbide particle reinforced steel matrix surface-layer composite material and preparation method thereof |
| CN106424740B (en) * | 2016-09-30 | 2019-04-12 | 昆明理工大学 | A kind of tungsten carbide granule reinforced steel matrix skin layer composite material and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |