CN105986172A - Chain harrow for harvester - Google Patents
Chain harrow for harvester Download PDFInfo
- Publication number
- CN105986172A CN105986172A CN201510086632.9A CN201510086632A CN105986172A CN 105986172 A CN105986172 A CN 105986172A CN 201510086632 A CN201510086632 A CN 201510086632A CN 105986172 A CN105986172 A CN 105986172A
- Authority
- CN
- China
- Prior art keywords
- chain harrow
- chain
- harrow
- bainite
- cropper
- 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.)
- Pending
Links
Landscapes
- Soil Working Implements (AREA)
Abstract
The invention relates to a chain harrow for an agriculture harvester, and the chain harrow is an accessory of the agriculture harvester. Chain harrows are machined from profile steel such as Q235 and Q345 without being subjected to heat treatment all the time. The chain harrows are low in strength and hardness, poor in abrasion resistance and short in service life. The chain harrow for the agriculture harvester is made of austenite-bainite spheroidal graphite cast iron through casting and is high in strength, abrasion resistance and toughness.
Description
Technical field
The present invention relates to a kind of nodular iron casting, particularly relate to a kind of Austenite-Bainite Ductile Iron farm machinery parts.
Background technology
Chain harrow is agricultural harvester accessory, and for transporting in thresing machine by crops liter, during the work of large-scale cropper, chain harrow stress is relatively big, by sandy soil, the serious wear of crops granule.At present, chain harrow is all to form with the shaped steel such as Q235, Q345 are machined, and chain harrow is the most thermally treated, and tension, bending strength are low, the most wear-resistant, and the most existing chain harrow universal life-span is relatively low.Improve chain harrow intensity, wearability is the problem to be solved in the present invention.
Austempered ductile iron is the novel spheroidal graphite cast-iron of one developed over nearly 20 years, and in the case of same toughness, the intensity of austempered ductile iron can reach the twice of other spheroidal graphite cast-iron (such as pearlite-ferrite spheroidal graphite cast-iron).Austempered ductile iron has excellent wearability, and its tissue is mainly made up of bainite+austenite, and austenite can organize the extension of crackle, and in wear process, austenite significantly improves to martensite transfor mation, surface hardness；Under DRY SLIDING, the globular graphite in austempered ductile iron serves the effect of kollag.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of chain harrow with high intensity, high-wearing feature, to improve chain harrow service life.
The technical scheme is that
A kind of cropper chain harrow, wherein chain harrow is formed by casting；
A kind of cropper chain harrow, wherein chain harrow forging type is sand casting or permanent mold casting；
A kind of cropper chain harrow, wherein chain harrow is strip, and end face is I-shaped or U-shaped, and tooth is worn in chain harrow work；
A kind of cropper chain harrow, wherein chain harrow length 400mm-1200mm, width 30mm-60mm, highly 30mm-60mm；The most I-shaped chain harrow is as shown in Figure 1；
A kind of cropper chain harrow, wherein chain harrow base carbon 3%-4.5%, matrix composition adds alloying component, wherein alloying component mass percent is: Ni:0.7%-1.5%, Mo:0.4%-1.0%, Cr:0.4%-1.0%；
A kind of cropper chain harrow, wherein chain harrow material is Austenite-Bainite Ductile Iron, and microscopic structure is upper bainite+retained austenite+lower bainite+a small amount of ledeburite+a small amount of pearlite, wherein upper bainite content >=50%, lower bainite content 20%-35%, residual austenite content 5%-20%.Graphite nodule nodularization classification 1-3 level in matrix, size of graphite ball is 5-7 level；
A kind of cropper chain harrow, wherein with holes on chain harrow, can be bolted on chain；
A kind of cropper chain harrow, wherein impeller blasting to be passed through after chain harrow casting；
A kind of cropper chain harrow, wherein chain harrow surface lacquer.
Accompanying drawing explanation
Fig. 1 is the outline drawing of a kind of cropper chain harrow that inventor is done, and Fig. 2 is the standard specimen figure made by chain harrow material.
Below in conjunction with the accompanying drawings and embodiment the present invention is further detailed explanation.
Detailed description of the invention
Embodiment 1:
Mould is carried out according to design size, melt iron in intermediate frequency furnace, adds suitable alloying component, nodulizer, inovulant etc., by molten iron casting to sand mold.Cutting next fritter and do Metallographic Analysis, microscopic structure is upper bainite+retained austenite+lower bainite+a small amount of ledeburite+a small amount of pearlite, wherein upper bainite content about 50%, lower bainite content about 30%, residual austenite content about 10%.Graphite nodule nodularization classification 2 grades in matrix, size of graphite ball is 6 grades.
Embodiment 2:
Melt iron in intermediate frequency furnace, adds suitable alloying component, nodulizer, inovulant etc., by molten iron casting to calibrated bolck sand mold; take the middle lower section of calibrated bolck, processes standard coupon, does tensile strength detection; after testing, coupon tensile strength 835MPa on puller system.Standard coupon shape is as shown in Figure 2.
Embodiment 3:
Mould is carried out according to design size, melt iron in intermediate frequency furnace, adds suitable alloying component, nodulizer, inovulant etc., by molten iron casting to sand mold.The chain harrow of casting polishes off the projection that die joint causes, by impeller blasting, deburring, and then surface lacquer.A number of chain harrow installs on cropper after assembling with chain, gathers in the crops grain, and after gathering in 30000 mu of ground, chain harrow is intact.
Claims (6)
1. a cropper chain harrow, it is characterised in that: chain harrow is strip, and end face is I-shaped or U-shaped, chain harrow length 400mm-1200mm, and tooth is worn in chain harrow work.
2. a cropper chain harrow, it is characterised in that: chain harrow is made by casting, and chain harrow material is Austenite-Bainite Ductile Iron.
3. according to chain harrow described in claim 2, it is characterised in that: chain harrow is made by sand casting or permanent mold casting.
4. according to chain harrow described in claim 2, it is characterised in that: graphite nodule nodularization classification 1-3 level in matrix, size of graphite ball is 5-7 level.
5. according to chain harrow described in claim 2, it is characterized in that: its microscopic structure is upper bainite+retained austenite+lower bainite+a small amount of ledeburite+a small amount of pearlite, wherein upper bainite content >=50%, lower bainite content 20%-35%, residual austenite content 5%-20%.
6. according to chain harrow described in claim 2, it is characterised in that: chain harrow base carbon 3%-4.5%, matrix composition adds alloying component, wherein alloying component mass percent is: Ni:0.7%-1.5%, Mo:0.4%-1.0%, Cr:0.4%-1.0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086632.9A CN105986172A (en) | 2015-02-25 | 2015-02-25 | Chain harrow for harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086632.9A CN105986172A (en) | 2015-02-25 | 2015-02-25 | Chain harrow for harvester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105986172A true CN105986172A (en) | 2016-10-05 |
Family
ID=57038890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510086632.9A Pending CN105986172A (en) | 2015-02-25 | 2015-02-25 | Chain harrow for harvester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105986172A (en) |
-
2015
- 2015-02-25 CN CN201510086632.9A patent/CN105986172A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5629846B1 (en) | Steel for crawler-type undercarriage parts and crawler belt links | |
| CN105369130B (en) | Multielement alloying high-strength high-abrasion-resistance steel and manufacturing method of hot-rolled plate | |
| CN102277535B (en) | Ridger tooth alloy material and preparation method thereof | |
| CN102912246B (en) | High-manganese-steel composite material applied to bushing block of tapered crushing machine | |
| US12098450B2 (en) | Tracked undercarriage component, and method for producing the same | |
| JP6180984B2 (en) | Steel plates for chainsaw parts and chainsaw parts | |
| CN104805368B (en) | Chromium-tungsten-manganese-Rare Earth quasi-bainite steel and preparation method thereof | |
| JP3671688B2 (en) | Non-heat treated steel for hot forging for fracture split type connecting rods with excellent fracture splitting | |
| Boulifa et al. | Study of the influence of alloying elements on the mechanical characteristics and wear behavior of a ductile cast iron | |
| Patil et al. | Development and wear analysis of carbidic austempered ductile iron (CADI) | |
| JP2005023375A (en) | High hardness steel having excellent cold workability, heat resistance and wear resistance | |
| CN105986172A (en) | Chain harrow for harvester | |
| Kalincová et al. | Machinery for forest cultivation-increase of resistance to abrasive wear of the tool | |
| CN106148806A (en) | A kind of cropper chain harrow | |
| US20200063228A1 (en) | Wire rod for springs with excellent corrosion fatigue resistance, steel wire, and manufacturing method thereof | |
| Pokusová et al. | Abrasion resistance of as-cast high-chromium cast iron | |
| Mandal et al. | Austempered Ductile Iron Material for the Design of Agricultural Machinery | |
| Březina et al. | Application of ductile iron in the manufacture of ploughshares | |
| Motorin et al. | Improvement of wear resistance of working elements from gray iron for development of the ground | |
| CN1112459C (en) | Soleplate of low-alloy austenite-bainite steel and its heat treatment process | |
| Boulifa et al. | Effect of alloying elements on the mechanical behavior and wear of austempered ductile iron | |
| Keough et al. | Agricultural applications of austempered iron components | |
| Gribenchenko et al. | Structuring carbon alloys due to carbon mass transfer | |
| CN106119678B (en) | A kind of formula and its preparation process of energy conservation steel ball | |
| JPH06125606A (en) | Cast tillage tine for farming |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161005 |
|
| WD01 | Invention patent application deemed withdrawn after publication |