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Re-manufacturable large tillage depth rotary tillage blade suitable for returning whole straws to field

A technology of remanufacturing and rotary ploughing blades, applied in the field of rotary ploughing blades in large ploughing depths, which can solve the conflict, the poor effect of returning straw in full, the toughness, bending strength and surface wear resistance can not meet the requirements of large ploughing depths at the same time. Function requirements and other issues, to achieve the effect of sharp cutting soil, good wear resistance and low resistance

Inactive Publication Date: 2013-01-02
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to be aimed at existing rotary tillage knife because overall toughness and bending strength and surface wear resistance can't meet the requirement of large plowing depth action at the same time, cause domestic 20cm above plowing depth rotary tillage operation to be basically in blank state, make straw The effect of full amount returning to the field is poor, and farmers have serious resistance to straw returning to the field. Design a kind of straw that can meet the requirements of overall bending strength, toughness and surface hardness and can be remanufactured after the rotary tiller is worn out. Large plowing deep rotary tiller for returning to the field

Method used

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  • Re-manufacturable large tillage depth rotary tillage blade suitable for returning whole straws to field
  • Re-manufacturable large tillage depth rotary tillage blade suitable for returning whole straws to field
  • Re-manufacturable large tillage depth rotary tillage blade suitable for returning whole straws to field

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Effect test

Embodiment 1

[0031] A remanufactured deep tillage rotary cultivator that is suitable for full return of straw to the field. It adopts 65Mn supplied by Xinfu Steel Company, with a blade turning radius R of 285mm. After cutting and forging, it is processed by a sandblasting machine. Clean the surface, remove the surface oxide scale, etc. to obtain a clean surface, bury the rotary knife in the solid powder boronizing agent of the infiltration box, cover it with clay and seal the box cover with the box body with high temperature sealant, and then perform boronizing ( Or chromium, titanium, vanadium and niobium, and the various co-infiltration treatments containing rare earth), then air-cooled to room temperature; reheat the boronized rotary knife to 850°C (or 830, 840, 860 or 870°C), heat preservation for 15 minutes and then oil quenching. After cooling to room temperature, perform medium temperature tempering at 420°C × 2h (or 430, 440 or 450°C × 2h) to obtain the large Rotary tiller for deep ...

Embodiment 2

[0036] A remanufactured deep tillage rotary cultivator suitable for full return of straw to the field. It adopts the supplied 60Si2Mn produced by Xinfu Steel Co., with a tip turning radius R of 300mm. After cutting and forging, it is processed by a sandblasting machine. Clean the surface, remove the surface oxide scale, etc. to obtain a clean surface, bury the rotary knife in the solid powder chromizing agent of the infiltration box, cover it with clay and seal the box cover and the box with a high temperature sealant, and then perform chromizing ( Or boronizing, titanium infiltrating, vanadium infiltrating and niobium infiltrating and the various co-infiltration treatments containing rare earth), and then air-cooled to room temperature; reheat the chromized rotary knife to 850°C (or 830, 840 , 860 or 870 ℃), heat preservation for 15 minutes, oil quenching, after cooling to room temperature, 450 ℃ × 2h (also 420, 430, 440 ℃ × 2h) medium temperature tempering, you can obtain the ...

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Abstract

A remanufacturable large-plow deep-plow rotary tiller suitable for full straw returning to the field is characterized in that its turning radius R of the knife tip is not less than 280 mm, and it is manufactured by the following method: first, use 65Mn or 60Si2Mn As a raw material, a billet that meets the size and shape requirements is obtained by forging; then, the obtained billet is subjected to an overall hot-impregnation treatment, and a layer of hot-dipping hardened layer with a depth of 10-150 microns and a hardness of not less than 1000HV is formed on the billet surface as a whole. Obtain an intermediate blank with a hardened layer on the entire surface; thirdly, heat treat the intermediate blank with a hardened layer on the entire surface. The heat treatment process is overall quenching+medium temperature tempering, so that the core is tempered troostite and the surface is hot. Deep tillage rotary blade for impregnating the hardened layer. The rotary tiller of the present invention has the characteristics of high hardness on the surface, high toughness and high strength of the core, which can meet the needs of a continuous or accumulated 150 hours of rotary tillage operations with a large depth of tillage (>20cm); at the same time, the rotary tiller of the present invention can be repeated Manufacturing greatly reduces the overall cost of the rotary tiller.

Description

Technical field [0001] The present invention involves a kind of agricultural machinery, especially a rotary farming knife used in rural farmland operations. Specifically, it is a large farming knife that can be re -manufactured. Background technique [0002] At present, the full amount of farming and straws in many stubble farming has developed rapidly. my country will return the full amount of stubble ports as an important measure to increase the organic matter of soil, stop soil plateization, and achieve sustainable agricultural development.However, in the harvest season, most straws were secretly burned by farmers. The predatory planting behavior of this kind of burning straw caused the soil to burn the plate and burn thinner.The road was burned frequently, and the airport was burned by the airport, which could not take off, all of which became a hot spot for major news media in the harvest season.According to incomplete statistics, 600 million tons of straw nationwide are bur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B33/10C23F17/00
Inventor 王宏宇赵玉凤袁晓明缪宏陈康敏许晓静王明娣张瑞宏左敦稳许瑞华顾鹏飞沈佳俊
Owner JIANGSU UNIV
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