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

A rotary tiller blade and remanufacturing technology, which is applied in the field of deep tillage rotary tiller, can solve the problem of resistance, poor effect of full straw returning to the field, toughness, bending strength and surface wear resistance that cannot meet the needs of large tillage depth at the same time Function requirements and other issues, to achieve the effect of sharp soil cutting, good wear resistance, and low resistance

Inactive Publication Date: 2011-10-26
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 remanufacturable rotary tiller suitable for returning full amount of straw to the field for large-scale plowing. It adopts the supply state 65Mn produced by Xinfu Iron and Steel Co., Ltd., and the turning radius R of the knife tip is 285mm. Clean the surface, remove the surface scale, etc. to obtain a clean surface, bury the rotary tiller in the solid powder boronizing agent of the infiltration box, cover the top with clay and seal the box cover and the box body with high-temperature resistant sealant, and then carry out boronizing ( or chromizing, titanium, vanadium and niobium and the various co-drilling treatments containing rare earths) and then air-cooled to room temperature; reheat the boronized rotary blade to 850°C (or 830, 840, 860 or 870°C), oil quenching after heat preservation for 15 minutes, and after cooling to room temperature, tempering at a medium temperature of 420°C×2h (or 430, 440 or 450°C×2h) to obtain the large Deep tillage rotary tiller.

[003...

Embodiment 2

[0036] A remanufacturable deep rotary tiller suitable for returning full amount of straw to the field and large-scale plowing. It adopts the supply state 60Si2Mn produced by Xinfu Iron and Steel Co., Ltd., and the turning radius R of the knife tip is 300mm. Clean the surface, remove the surface scale, etc. to obtain a clean surface, bury the rotary tiller in the solid powder chromizing agent of the infiltration box, cover the top with clay and seal the box cover and the box body with high-temperature resistant sealant, and then carry out chromizing ( Or boronizing, titaniumizing, vanadiumizing and niobiumizing and the above-mentioned various co-infiltration treatments containing rare earths), then air-cooled to room temperature; reheat the rotary tiller blade after chromizing to 850°C (or 830, 840 , 860 or 870°C), oil quenching after heat preservation for 15 minutes, and after cooling to room temperature, tempering at a medium temperature of 450°C × 2h (or 420, 430, 440°C × 2h)...

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Abstract

The invention discloses a remanufacturable large tillage depth rotary tillage blade suitable for returning whole straws to a field. The blade provided by the invention is characterized in that the blade point rotation radius R is not less than 280 millimeters, and is manufactured through the following steps: firstly forging 65Mn or 60Si2Mn utilized as a raw material to obtain a blank satisfying the requirements on size and shape; then carrying out whole hot dipping on the blank; forming a hot-dipped hardened layer with the depth of 10-150 microns and the hardness no less than 1000HV to obtainan intermediate blank the whole surface of which is provided with the hardened layer; and thirdly, carrying out heat treatment on the intermediate blank the whole surface of which is provided with the hardened layer, wherein the heat treatment process comprises whole quenching and medium temperature tempering, so as to obtain a large tillage depth rotary tillage blade the center of which is tempering troostite and the surface of which is the hot-dipped hardened layer. The rotary tillage blade provided by the invention has the characteristics of high-strength surface, high tenacity, high strength, capability of ensuring the requirement on one-time continuous or 150-hour 20cm large tillage rotary tillage operation; and meanwhile, the rotary tillage blade can be repeatedly manufactured, thusgreatly lowering the comprehensive cost of the rotary tillage blade.

Description

technical field [0001] The invention relates to an agricultural machine, in particular to a rotary tiller used in farmland operations in rural areas, in particular to a remanufacturable rotary tiller with a large plowing depth suitable for returning a full amount of straw to the field. Background technique [0002] At present, multi-stubble farming and full straw returning are developing rapidly. In my country, full stubble returning to the field is regarded as an important measure to increase soil organic matter, prevent soil slabs, and achieve sustainable agricultural development. However, when it comes to the harvest season, most of the straw is still secretly burned by farmers. This predatory planting behavior of burning straw causes the soil to become more burnt and thinner. At the same time, burning straw also seriously pollutes the environment. The roads were burned so that there were frequent car crashes, and the airport was burned so that the planes could not take o...

Claims

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Application Information

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Patent Type & Authority Applications(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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